JP7720186B2 - Movable wind-resistant hook - Google Patents

Description

The present invention relates to a wind-resistant hook attached to a shutter curtain.

When the shutter curtain is fully closed, closing the building opening, both widthwise ends of the shutter curtain are received within the guide rails on the left and right sides of the building opening. However, when wind pressure acts on the shutter curtain, the shutter curtain may expand, causing the widthwise ends to slip out of the guide rails.

Wind-resistant hooks are known as a means of preventing the widthwise ends of a shutter curtain from slipping out of the guide rails when the opening is fully closed. Wind-resistant hooks are generally installed on heavy shutters that require a certain level of wind resistance, but so-called lightweight shutters rarely require wind-resistant hooks as standard equipment.

In addition, conventional wind-resistant hooks are permanently installed in a protruding position at the longitudinal ends of the slats that make up the shutter curtain, and are installed across the height of the shutter curtain when the opening is in a fully closed position (Patent Document 1, Patent Document 2).
Japanese Utility Model Application Publication No. 62-85688 Japanese Utility Model Application Publication No. 64-27397

The present invention aims to use a movable wind-resistant hook whose claws can move between a retracted position and a locked position, thereby ensuring more reliable operation of the wind-resistant hook by maintaining the locked position of the claws.

The technical means adopted by the present invention are:
an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation unit is in the first position, the claw unit is in a stored position,
In conjunction with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position.
A wind-resistant hook,
When the claw is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw is in the locking position, the wind-resistant hook is in an operative state;
A locking means is provided to maintain the wind-resistant hook in an operating state.
It is a movable wind-resistant hook.

In one embodiment, the locking means is a holding means for holding the operating portion in the second position.
In one aspect, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operating portion and the portion of the case, and a fitting receiving portion is provided on the other;
When the operating portion is in the second position, the fitting protrusion is in a fitted state with the fitting receiving portion,
The mated state can be released by sliding the operating portion with a predetermined force.

In one aspect, when the wind-resistant hook is in an activated state, the claw portion in the locked position is biased by a spring material in a direction to maintain the locked position, and the force acting to move the claw portion in the locked position to the stored position is absorbed by the spring material, thereby maintaining the activated state of the wind-resistant hook by the locking means.
In one aspect, when the fitting protrusion and the fitting receiving portion are in a fitted state (the windproof hook is in an activated state), the claw portion in the locking position is biased by a spring material in a direction to maintain the locking position,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the locked position, to the stored position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.

In one aspect, an intermediate member is provided which is connected to the operation unit via a spring member and slides in conjunction with the sliding movement of the operation unit,
The claw portion is movable between a storage position and a locking position in conjunction with the sliding movement of the intermediate member,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the locked position, to the stored position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.

In one aspect, the locking means for maintaining the operating state of the wind-resistant hook is a first locking means,
Furthermore, a second locking means is provided to keep the wind-resistant hook in an inoperative state.
In one embodiment, the second locking means is a holding means for holding the operating portion in the first position.

In one aspect, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operation portion and the portion of the case, and a first fitting receiving portion and a second fitting receiving portion are provided on the other;
When the operating portion is in a first position, the fitting protrusion is in a fitted state with the first fitting receiving portion,
When the operation portion is in the second position, the fitting protrusion is in a fitted state with the second fitting receiving portion,
The mated state can be released by sliding the operating portion with a predetermined force.
In one embodiment, the first locking means and the second locking means share the same fitting protrusion.
The first locking means and the second locking means may each be provided with a fitting protrusion.

One aspect of the present invention relates to a shutter equipped with the above-mentioned movable wind-resistant hook,
The guide rails located at both ends of the building opening in the width direction are provided with latching portions corresponding to the height positions of the wind-resistant hooks,
When the opening is fully closed, the claw portions in the locking position lock onto the locked portions, providing a wind-resistant structure that prevents the slat ends from slipping out of the guide rails.

This invention employs a movable wind-resistant hook whose claws are movable between a storage position and a locking position. By maintaining the locking position of the claws after setting the wind-resistant hook to its operating state, the operation of the wind-resistant hook is made more reliable.

FIG. 10 is a front view of the shutter device in a fully closed position as viewed from the indoor side. FIG. 2 is a partially enlarged view showing the locking device portion of FIG. 1 . FIG. 4 is a vertical cross-sectional view of the shutter device in a fully closed position. FIG. 3 is a partially enlarged view showing an upper portion of the guide rail of FIG. 2 . FIG. 10 is a diagram showing a wind-resistant hook unit. FIG. FIG. FIG. FIG. FIG. FIG. FIG. FIG. A figure showing the wind-resistant hook unit in an inoperative state (steady state) (with the cover plate partially omitted). 13 is a diagram showing the state in which the operation plate starts to slide in the first direction from the state in FIG. 12 (the cover plate is partially omitted in the drawing). 14 is a diagram showing a state in which the operation plate has further slid in the first direction from the state in FIG. 13 (the cover plate is partially omitted in the drawing). 15 is a diagram showing the operating state of the wind-resistant hook in which the operation plate has further slid in the first direction from the state of FIG. 14 and locked (the cover plate is partially omitted in the drawing). FIG. In the operating state of FIG. 15, the state where the claw portion in the locking position is pushed in is shown (the cover plate is partially omitted). The upper figure shows the mounting plate fixed to the back of the slat, and the lower figure shows the process of attaching the wind-resistant hook unit to the mounting plate. 10A and 10B are diagrams showing the process of attaching a wind-resistant hook to a mounting plate (only the bottom plate is shown). The upper figure shows the wind-resistant hook attached to the back of the slat in an inoperative state (the operating plate is in the first position), and the lower figure shows the wind-resistant hook attached to the back of the slat in an activated state (the operating plate is in the second position). FIG. 10 is a diagram showing an operation panel equipped with a display unit. The figures show the state in which the slat is positioned within the guide rail without any bias, (A) shows the wind-resistant hook in an inoperative state (with the claw portion in the stored position), (B) shows the wind-resistant hook in an activated state (with the claw portion in the locked position), and (C) is a cross-sectional view of the guide rail. The figure shows the state in which the slat is biased within the guide rail, (A) shows the wind-resistant hook in an inoperative state (with the claw portion in the stored position), (B) shows the wind-resistant hook in a state in which the claw portion is in contact with the bottom of the guide rail (the claw portion moves relatively backward) and the operating plate is in the second position and locked, and (C) shows the wind-resistant hook in an activated state (with the claw portion in the locked position). This is a diagram explaining the action of the wind-resistant hook when surface pressure acts on the shutter curtain. The upper diagram shows the case where surface pressure acts to inflate the shutter curtain toward the inside, and the lower diagram shows the case where surface pressure acts to inflate the shutter curtain toward the outside. 2A to 2C are diagrams illustrating in detail the configuration of a shutter curtain according to the present embodiment. This is a diagram showing a schematic diagram of the behavior of the shutter curtain when the wind-resistant hook is in an activated state with the opening fully closed and wind pressure acts on the shutter curtain, and is a cross-sectional view showing a slat with a wind-resistant hook. This is a diagram showing a schematic cross-sectional view of the seat plate illustrating the movement of the shutter curtain when the wind-resistant hook is in an activated state with the opening fully closed and wind pressure acts on the shutter curtain. This is a diagram showing a schematic of the movement of the shutter curtain when the wind-resistant hook is in an activated state with the opening fully closed and wind pressure acts on the shutter curtain, and is a cross-sectional view showing the slats located in the upper part of the opening. A figure showing the inoperative state (steady state) of a wind-resistant hook unit according to another embodiment. A diagram showing the operating state of a wind-resistant hook unit according to another embodiment. A figure showing the inoperative state (steady state) of a wind-resistant hook unit equipped with a stopper. A figure showing the operating state of the wind-resistant hook unit shown in Figure 30.

[A] Overall configuration of the shutter Fig. 1 is a front view of the shutter device according to this embodiment, and Fig. 2 is a vertical cross-sectional view of the shutter device according to this embodiment. The shutter device according to this embodiment is a manual lightweight shutter, but the lightweight shutter and manual shutter are merely examples and do not limit the present invention. The present invention can also be applied to, for example, an electric shutter equipped with an opening and closing mechanism.

The shutter curtain 1 is made up of multiple elongated slats 10 that extend in the width direction of the opening and are connected in the height direction, and is equipped with a seat plate 11 at its lower end. The upper end of the shutter curtain 1 is connected to a winding body 2 located above the opening via a hanging point 10'. Guide rails 3 are installed upright on both the left and right sides of the building opening in the width direction, and when the shutter curtain 1 is raised or lowered or in the fully closed position, the grooves of the guide rails 3 receive both widthwise ends of the shutter curtain 1 (both lengthwise ends of the slats 10).

When the opening is fully closed, the shutter curtain 1 is wound onto the winding body 2, causing both widthwise ends of the shutter curtain 1 to rise while being guided by the guide rails 3, opening the building opening; when the opening is fully open, the shutter curtain 1 is unwound from the winding body 2, causing both widthwise ends of the shutter curtain 1 to fall while being guided by the guide rails 3, closing the building opening.

The shutter device according to this embodiment is a manual shutter. The winding body 2 is biased by a balance spring 2' in the direction of winding up the shutter curtain 1. When a force to lower the shutter curtain 1 is manually applied to the shutter curtain 1 in the fully open position, initiating its descent, the shutter curtain 1 descends under the manual operating force and its own weight, landing on the floor FL or the ground and assuming a fully closed position. When a force to raise the shutter curtain 1 is manually applied to the shutter curtain 1 in the fully closed position, initiating its ascent, the shutter curtain 1 is raised while being wound up by the manual operating force and the biasing force of the balance spring, and assumes a fully open position.

As shown in FIG. 1A, a locking device 19 is provided below the midpoint of the shutter curtain 1 in the height direction. The locking device 19 is provided on a slat 10 at a predetermined height of the shutter curtain 1 and includes an operating unit 190 located at the longitudinal center of the slat 10, left and right rods 191 extending horizontally from the operating unit 190 toward both longitudinal ends of the slat 10, and a locking unit 192 with multi-stage claws formed at the ends of the left and right rods 191. A locking unit (not shown) is provided within the guide rail 3 at a height corresponding to the locking device 19's position when the opening is fully closed. When the opening is fully closed, rotating the operating unit 190 of the locking device 19 causes the locking unit 192 to protrude from the longitudinal end edge 103 of the slat 10 and lock onto the locking unit, restricting upward movement of the shutter curtain 1 in the fully closed position. The locking device 19 restricts the upward movement of the shutter curtain 1 when the opening is fully closed, and the engagement between the locking portion 192 and the locked portion is such that the upward movement of the locking portion 192 is restricted. This engagement state of the locking device 19 cannot prevent the end of the slat 10 from slipping out of the guide rail 3.

Both longitudinal ends of the reel body 2 are supported by left and right plate-shaped brackets B. In this embodiment, a shutter case 20 is provided above the building opening, and the reel body 2 is located within the shutter case 20. That is, the shutter case 20 provides a shutter storage space for storing the shutter curtain 1 wound around the reel body 2. Note that in this embodiment, the shutter case 20 serves as the shutter storage space, but the space within the ceiling may also form the shutter storage space. A horizontally elongated opening is formed on the underside of the shutter case 20 across the entire width of the building opening, through which the shutter curtain 1 passes when raised and lowered. An inner lintel 21 and an outer lintel 22 are provided adjacent to the horizontally elongated opening, extending across the entire width of the building opening. Both longitudinal ends of the inner lintel 21 and the outer lintel 22 are supported by left and right brackets B (upper guides 23). The guide rail 3 extends the entire height of the building opening. An upper guide 23, expanding upward, is provided at the upper end of the guide rail 3, corresponding to the height positions of the inner lintel 21 and outer lintel 22. As shown in FIG. 2A , the upper guide 23 is fixed to the lower portion of the bracket B. The upper guide 23 comprises a pair of guide sections 230, 230 that expand in a curved manner toward the upper end, and a vertical bottom piece 231 (with vertically sloping tapers 2310, 2311). The lower side of the lower surface 232 of the guide section 230 is provided with a recessed portion that receives the upper end 36 of the guide rail 3. The front side of the recessed portion is formed with an abutment section 233 against which the wide portion 111 of the seat panel 11 abuts when the opening is fully open. The groove width at the lower end of the pair of guide sections 230, 230 is approximately the same as the width of the guide groove 35 of the guide rail 3.

When the opening is fully closed, the seat panel 11 at the lower end of the shutter curtain 1 rests on the floor FL or the ground. Both longitudinal ends of the seat panel 11 are located inside the guide rail 3. The seat panel 11 in this embodiment has a rising portion 110 connected to the lowest slat 10 and a wide portion 111 located at the lower end of the rising portion 110 and extending horizontally, with both longitudinal left and right ends of the rising portion 110 located inside the guide rail 3. The length dimension of the wide portion 111 is shorter than the opening width dimension and wider than the width of the guide groove 35 (Figure 21 (C)) of the guide rail 3, with the underside of the wide portion 111 abutting the floor FL. The seat panel 11 is thicker and sturdier than the slats 10, and has greater mechanical strength than the slats 10.

As shown in Figure 2, when the opening is fully closed, the opening blocking portion 1' of the shutter curtain 1 blocks the building opening across the entire opening height, and both widthwise ends of the slats 10 of the opening blocking portion 1' of the shutter curtain 1, which is in a substantially vertical position, are located within the grooves of the guide rail 3. The slats 10 that make up the upper portion 1D of the shutter curtain 1, which is in a substantially vertical position, are located within the shutter case 20, and both longitudinal ends of these slats 10 are located above the upper end of the guide rail 3. The slats 10 located at the lower end of the shutter case 20 are located between the inner and outer lintels 21, 22, and both longitudinal ends are located within the upper guide 23.

As shown in Figures 1, 2, and 24, movable wind-resistant hooks F are provided at both longitudinal ends of multiple slats (four in this embodiment) 10 located in the middle of the height of the opening closure section 1' of the shutter curtain 1 when it is in the fully closed position. Each movable wind-resistant hook F has a movable claw 4. When the shutter curtain 1 is opened or closed, or when the opening is normally fully closed, the claw 4 is in a retracted position, and when the opening is fully closed, the claw 4 is in a protruding position, thereby functioning as a wind-resistant hook. Hook receivers 16 are provided inside the guide rail 3, positioned at a height corresponding to the height position of each wind-resistant hook F of the shutter curtain 1 when it is in the fully closed position.

[B] Wind-Resistant Hook [B-1] Overview The wind-resistant hook F according to this embodiment is a wind-resistant hook assembly or wind-resistant hook unit, and is assembled from a claw portion 4 (FIG. 4), an intermediate plate 5 (FIG. 5), a compression plate 6 (FIG. 6), an operation plate 7 (FIG. 7), a bottom plate 8 (FIG. 8), a cover plate 9 (FIG. 9), a first coil spring 12, a second coil spring 13, and a lock spring 14. These elements, except for the first coil spring 12 and the second coil spring 13, are plate-like elements obtained by bending or punching a metal plate of a predetermined shape.

As shown in FIG. 3, in this embodiment, the bottom plate 8 and cover plate 9 form a case for the movable wind-resistant hook F (five sides are closed, consisting of the bottom surface 80 of the bottom plate 8, the top surface 90 of the cover plate 9, the hanging wall 91, the first side wall 92, and the second side wall 93, and the tip is open). Inside, the claw portion 4, intermediate plate 5, compression plate 6, operation plate 7, first coil spring 12, second coil spring 13, and lock spring 14 are housed. The wind-resistant hook F in this embodiment is attached to the surface of the slat 10 via a mounting plate 15 (FIG. 10). More specifically, the mounting plate 15 is fixed to the longitudinal end of the slat 10, and the case for the wind-resistant hook F (the bottom surface 80 of the bottom plate 8) is attached to this mounting plate 15.

The claw portion 4 is movable between a storage position and a locking position, and the operation plate 7, intermediate plate 5, and compression plate 6 are slidable. In conjunction with the sliding movement of the operation plate 7, the claw portion 4 moves from the storage position to the locking position and from the locking position to the storage position. The operation plate 7 and intermediate plate 5 are connected via a first coil spring 12, so that the intermediate plate 5 slides in conjunction with the sliding movement of the operation plate 7. The base end portion of the claw portion 4 is locked or loosely fitted into the tip end portion of the intermediate plate 5 with some play, so that the claw portion 4 moves between the storage position and the locking position in conjunction with the sliding movement of the intermediate plate 5. The intermediate plate 5 and compression plate 6 are connected via a second coil spring 13, so that the compression plate 6 can slide integrally with the operation plate 7 and intermediate plate 5 in conjunction with the sliding movement of the intermediate plate 5, which is linked to the sliding movement of the operation plate 7.

Below, each element that makes up the wind-resistant hook F will be described in detail. Please note that this description is primarily based on the orientation of each element shown in the figures, and differs from the orientation of each element when the wind-resistant hook F is actually attached to the slat 10. In this specification, when the wind-resistant hook F is attached to the longitudinal end of the slat 10, the side furthest from the longitudinal center of the slat 10 will be referred to as the tip or front side, and the side closest to it will be referred to as the base or rear side. The position when the operating plate 7 is moved furthest to the base or rear side will be referred to as the first position, and the position when it is moved furthest to the tip or front side will be referred to as the second position. The direction in which the operating plate 7 slides from the first position to the second position (the tip or forward direction) will be referred to as the first direction, and the direction in which it slides from the second position to the first position (the base or rear direction) will be referred to as the second direction.

[B-2] Claw portion As shown in Figure 4, the claw portion 4 has a main body integrally formed from a front portion 40 and a rear portion 41 in a "L" shape in side view, and a locking piece 42 that is "L" shaped in side view is folded back and integrally formed at the tip of the main body (the tip of the front portion 40). The angle between the front portion 40 and the locking piece 42 is an acute angle.

The base end portion of the claw portion 4 comprises a base end portion 41' of the rear portion 41, a pair of hanging pieces 43 hanging from both widthwise ends of the base end portion 41', and a rising piece 44 located between the pair of hanging pieces 43 and rising perpendicularly from the base end portion 41'. The angle between the rear portion 41 and the hanging piece 43 is approximately right, and the angle between the rear portion 41 and the rising piece 44 is also approximately right. In a side view, the hanging piece 43 and the rising piece 44 extend linearly, with the rear portion 41 extending perpendicular to this line. The locking piece 42 and the rising piece 44 are formed by being bent toward the same side (upper side in the embodiment shown in Figure 4) of the main body (the front portion 40 and the rear portion 41).

The claw portion 4 is a movable element that is in the storage position when the shutter is opened or closed, or when the opening is normally fully closed, so as not to interfere with the opening and closing of the shutter. In conjunction with the operation plate 7, which is in the first position, sliding in a first direction, the claw portion 4 slides from the storage position toward the tip, protruding from the tip of the case (tip edge 900 of the top surface 90, tip edge 921 of the first side wall 92, tip edge 931 of the second side wall 93), and then rotates to assume the locking position. When the claw portion 4 is in the locking position, the operation plate 7 is in the second position, and in conjunction with the operation plate 7, which is in the second position, sliding in the second direction, the claw portion 4 moves from the locking position to the storage position.

[B-3] Intermediate plate As shown in Figure 5, the intermediate plate 5 has a roughly rectangular surface portion 50 with predetermined length and width dimensions, and the tip side of the surface portion 50 is a wide portion 51. At the tip of the surface portion 50 (the tip of the wide portion 51), a rising piece 52 is formed that rises vertically across the entire width of the wide portion 51, and at the base end side of the wide portion 51, a pair of rising pieces 53 that also rise vertically are formed.

A rising piece 54 is formed at the base end of the face portion 50. An opening 55 extending in the longitudinal direction is formed in the face portion 50, with the base end of the opening 55 reaching the rising piece 54, and a connecting portion 540 on the base end side (rear end) of the first coil spring 12 is formed on the rising piece 54. A rising piece 56, which is a connecting portion on the tip end side (front end) of the second coil spring 13, is formed at the tip end of the opening 55.

A pair of protrusions 57 protruding in the width direction are formed on the side edge 500 of the face portion 50, located closer to the base end than the center of the face portion 50 in the longitudinal direction. Each protrusion 57 has a front edge 570 located on the tip side of the face portion 50.

On the tip side of the intermediate plate 5, rising pieces 52 and 53 are formed at both widthwise ends of the wide portion 51, and a pair of grooves 58 are formed from the rising pieces 52, 53 and both widthwise ends of the wide portion 51. The width of the wide portion 51 is approximately the same as the width of the claw portion 4. The width of the rising piece 53 is slightly larger than the width of the hanging piece 43 of the claw portion 4. The width of the rising piece 44 of the claw portion 4 is smaller than the distance between the left and right rising pieces 53 of the intermediate plate 5. The height of the rising piece 52 is smaller than the height of the rising piece 53. The groove 58 is designed to receive the hanging piece 43 at the base end of the claw portion 4 with some play, and the hanging piece 43 at the base end of the claw portion 4 can rotate while received in the groove 58.

[B-4] Compression Plate As shown in Figure 6, the compression plate 6 comprises a substantially rectangular surface portion 60, a narrow abutment portion 61 at the tip of the surface portion 60, and a narrow hanging piece 62 at the base end of the surface portion 60. An opening 63 extending in the front-to-rear direction is formed in the surface portion 60, the rear end of the opening 63 reaching the upper half of the hanging piece 62, and a connecting portion 620 for the rear end side of the second coil spring 13 is formed in the lower half of the hanging piece 62.

The width of the abutment portion 61 formed at the tip of the compression plate 6 is smaller than the width of the raised piece 44 of the claw portion 4 and the distance between the pair of raised pieces 53 of the intermediate plate 5. The compression plate 6 is set with the lower surfaces of both widthwise ends of the tip side of the face portion 60 resting (abutting) on the upper ends of the raised pieces 53 of the intermediate plate 5, the abutment portion 61 abutting on the outer surfaces of the raised pieces 44 of the claw portion 4 (the hanging pieces 43 are received in the grooves 58), the face portion 60 facing the front portion of the face portion 50 of the intermediate plate 5, and the lower end of the hanging piece 62 on the base end side of the face portion 60 abutting on the upper surface of the face portion 50. When the compression plate 6 is set on the intermediate plate 5, the raised piece 56 of the intermediate plate 5 is located in front of the opening 63 of the face portion 60 of the compression plate 6.

The rising piece 56 of the intermediate plate 5 is spaced a predetermined distance forward from the connecting portion 620 of the compression plate 6. The second coil spring 13 is a tension coil spring, and in a tensioned state, its distal end (front end) is connected to the rising piece 56 of the intermediate plate 5 and its proximal end (rear end) is connected to the connecting portion 620 of the compression plate 6. The distal ends of the first side wall 81 and second side wall 82 of the bottom plate 8 abut against the outer surface (rear surface) of the distal rising piece 53 of the intermediate plate 5, restricting rearward movement of the intermediate plate 5 (note that this restriction is optional and movement may not be restricted). The biasing force of the second coil spring 13 connecting the intermediate plate 5 and compression plate 6 acts to move the compression plate 6 forward, and the abutment portion 61 at the distal end of the compression plate 6 abuts against the rising piece 44 at the proximal end of the claw portion 4 so as to press against the rising piece 44.

When the second coil spring 13 is attached to the intermediate plate 5 and the compression plate 6, the front portion of the surface 50 of the intermediate plate 5 faces the surface 60 of the compression plate 6, and part of the upper side of the second coil spring 13 is located in the opening 63 of the surface 60, and part of the lower side is located in the opening 55 of the surface 50. By forming the openings 55 and 63 at the second coil spring 13, the gap between the surface 50 of the intermediate plate 5 and the surface 60 of the compression plate 6 is made as small as possible, making the thickness of the case of the movable wind-resistant hook F thinner and more compact. Note that instead of the openings 55 and 63, concave grooves may be engaged in the surfaces 50 and 60 to partially accommodate the second coil spring 13.

The compression plate 6 rests on the intermediate plate 5 and slides back and forth within the case together with the intermediate plate 5 as the intermediate plate 5 slides back and forth. The compression plate 6 rests slidably on the intermediate plate 5 and can slide relative to the intermediate plate 5 in response to changes in the length of the second coil spring 13.

[B-5] Operation Plate As shown in Figure 7, the operation plate 7 comprises a face portion 70 that is generally rectangular in plan view, a hanging piece 71 located at the tip of the face portion 70 and hanging down, a hanging piece 72 located at the base end of the face portion 70 and hanging down, a rear face portion 73 that extends rearward from the lower end of the hanging piece 72, and a rising piece 74 that rises from the rear end of the rear face portion 73. The width of the hanging pieces 71 and 72 is slightly smaller than the width of the face portion 70, and the width of the rear face portion 73 and the rising piece 74 is the same as the width of the hanging piece 72.

The lower end of the hanging piece 71 is cut out to a predetermined width to form a recess 710. The width of the recess 710 is slightly larger than the width of the surface portion 50 of the intermediate plate 5. When the surface portion 50 of the intermediate plate 5 is received in the recess 710, the lower end of the hanging piece 71 abuts against the bottom surface portion 80 of the bottom plate 8, and the inner surface (rear surface) of the hanging piece 71 abuts or engages with the front edge 570 of the protruding piece 57 of the intermediate plate 5. At this time, the surface portion 70 of the operation plate 7 faces the rear portion of the surface portion 50 of the intermediate plate 5. In other words, the surface portion 60 of the compression plate 6 faces the front portion of the surface portion 50 of the intermediate plate 5, and the surface portion 70 of the operation plate 7 faces the rear portion of the surface portion 50 of the intermediate plate 5. In a plan view, the surface portion 60 of the compression plate 6 and the surface portion 70 of the operation plate 7 are lined up in the front-to-rear direction within the case.

An opening 75 is formed in the surface portion 70 of the operation plate 7 from the front end to the rear, and a connecting portion 711 for the front end of the first coil spring 12 is formed in the hanging piece 71. The connecting portion 711 of the hanging piece 71 of the operation plate is a predetermined distance forward from the connecting portion 540 of the rising piece 54 of the intermediate plate 5. The first coil spring 12 is a tension coil spring, and when tensioned to a predetermined length, the tip side (front end) is connected to the connecting portion 711 of the hanging piece 71 and the base side (rear end) is connected to the connecting portion 540 of the rising piece 54.

The inner surface of the hanging piece 71 at the tip of the operation plate 7 engages with the front edge 570 of the protruding piece 57 of the intermediate plate 5, restricting rearward movement relative to the intermediate plate 5. The outer surface of the rising piece 53 at the tip of the intermediate plate 5 abuts against the leading edges (front edges) 810, 820 of the first side wall 81 and second side wall 82 of the bottom plate 8. The biasing force of the first coil spring 12 connecting the operation plate 7 and intermediate plate 5 acts to counteract the force sliding the operation plate 7 forward, so that when the operation plate 7 slides forward, the operation plate 7 and intermediate plate 5 move together toward the tip while the first coil spring 12 maintains its tensioned length.

When the first coil spring 12 is attached to the intermediate plate 5 and the operating plate 7, the rear portion of the surface 50 of the intermediate plate 5 faces the surface 70 of the operating plate 7, with part of the upper side of the first coil spring 12 positioned in the opening 75 of the surface 70 and part of the lower side positioned in the opening 55 of the surface 50. By forming openings 55 and 75 at the first coil spring 12, the gap between the surface 50 of the intermediate plate 5 and the surface 70 of the operating plate 7 is made as small as possible, making the case of the movable wind-resistant hook F thinner and more compact. Note that instead of the openings 55 and 75, concave grooves may be engaged in the surfaces 50 and 70 to partially accommodate the first coil spring 12.

As shown in Figures 7 and 20, one side edge 700 of the surface portion 70 of the operation plate 7 is formed with a recess 701 in which the lock spring 14 attached to the second side wall 82 of the bottom plate 8 is positioned. The recess 701 is generally trapezoidal in plan view, consisting of a front inclined edge 702, a rear inclined edge 703, and a bottom edge 704. The bottom edge 704 of the recess 701 is formed with a first protrusion 76 located on the tip side and a second protrusion 77 located on the base end side. A first fitting receiver 78 is formed in front of the first protrusion 76, and a second fitting receiver 79 is formed behind the second protrusion 77. The lock spring 14 in this embodiment is a leaf spring and is provided with a protruding fitting protrusion 140.

When the mating protrusion 140 of the lock spring 14 is in an engaged state with the first mating receiving portion 78 (first mating state), the operation plate 7 is in the first position, and the wind-resistant hook F is in an inactive state (the claw portion 4 is in a stored position). The first position of the operation plate 7 is maintained by the mating protrusion 140 of the lock spring 14 being in an engaged state with the first mating receiving portion 78 (first mating state). When the mating protrusion 140 of the lock spring 14 is in an engaged state with the second mating receiving portion 79 (second mating state), the operation plate 7 is in the second position, and the wind-resistant hook F is in an activated state (the claw portion 4 is in a locked position). The second position of the operation plate 7 is maintained by the mating protrusion 140 of the lock spring 14 being in an engaged state with the second mating receiving portion 79 (second mating state). The first and second mated states can be released by placing a finger on the raised piece 74 of the operation plate 7 and manually sliding the operation plate 7. When the operation plate 7 slides back and forth between the first and second positions, the mating protrusion 140 of the lock spring 14 slides against the bottom edge 704 of the recess 701 (see Figures 13 and 14).

As shown in FIG. 20 , the top surface of the face 70 of the operation panel 7 has a first display unit G located at the front and a second display unit R located at the rear, adjacent to each other in the front-to-rear direction. The first display unit G indicates that the windproof hook F is in an inoperative state, and the second display unit R indicates that the windproof hook F is in an activated state. The first display unit G and the second display unit R are visually distinguishable. Typically, the first display unit G and the second display unit R are distinguishable by color. In this embodiment, the first display unit G is a green sticker, and the second display unit R is a red sticker. Note that the color stickers are merely examples, and the first display unit G and the second display unit R may alternatively be paint of a predetermined color applied to a predetermined area of the face 70, and the paint may be fluorescent paint or phosphorescent paint. The first display unit G and the second display unit R may also be distinguishable by symbols or letters.

[B-6] Bottom Plate As shown in FIG. 8 , the bottom plate 8 includes a bottom surface portion 80 and a first side wall 81 and a second side wall 82 that rise up oppositely from the side edges of the bottom surface portion 80. The first side wall 81 has a vertical leading edge 810 and a locking protrusion 811 formed at its rear end. The second side wall 82 has a vertical leading edge 820 and a locking protrusion 821 formed at its rear end. The lengths of the first side wall 81 and the second side wall 82 are shorter than the length of the bottom surface portion 80. The bottom surface portion 80 includes a front portion 80A located forward of the leading edges 810 and 820 of the first side wall 81 and the second side wall 82, an intermediate portion 80B corresponding to the first side wall 81 and the second side wall 82, and a rear portion 80C located rearward of the first side wall 81 and the second side wall 82. A protrusion 83 with a curved periphery protrudes from the tip of the bottom surface portion 80 (front side portion 80A). A rising piece 84, a horizontal piece 85, and a hanging piece 86 are formed on the rear end side of the bottom surface portion 80 (rear side portion 80C). If the slat 10 is biased in the width direction of the opening when the shutter is opened or closed or when the opening is fully closed, the protrusion 83 may come into contact with the inner surface of the bottom wall 32 of the guide rail 3. However, the curved periphery of the protrusion 83 slides against the inner surface of the bottom wall 32 and the bottom piece 231 (tapers 2310, 2311), allowing the shutter to open and close smoothly.

A slit 87 is formed between the front portions of the first side wall 81 and the second side wall 82 and the bottom surface portion 80. An opening or cutout portion 801 is formed in the bottom surface portion 80 at the base end of the front portion 80A and to the side of the middle portion 80B, and the slit 87 is formed integrally with the cutout portion 801 at the base end of the front portion 80A. Threaded holes 812 and 822 are formed on the front end sides of the first side wall 81 and the second side wall 82.

A concave notch is formed in the rear half of the second side wall 82 for mounting the lock spring 14. Protrusions 823, 823 are formed close to both ends of the bottom edge of the concave notch, and engaging portions 824, 824 are formed adjacent to the front and rear sides of the protrusions 823, with a space 825 being formed between the protrusions 823. The lock spring 14 is a leaf spring and includes a protruding mating projection 140, narrow strips 141, 141 located on either side of the mating projection 140, and curved locking pieces 142, 142 at the tips of the narrow strips 141, 141. The locking pieces 142, 142 are engaged with the locked portions 824, 824, and the narrow strips 141, 141 and the mating projection 140 are positioned inside the second side wall 82, with the mating projection 140 attached so that it protrudes inward. The mating projection 140 is positioned in the recess 701 on the side edge 700 of the surface portion 70 of the operation plate 7 (see Figure 12, etc.). When the mating projection 140 of the lock spring 14 passes over the first projection 76 and second projection 77, the mating projection 140 enters the space 825.

The operation plate 7, intermediate plate 5, and compression plate 6 are accommodated in the space enclosed by the bottom surface portion 80 of the bottom plate 8 and the first and second side walls 81 and 82, allowing them to slide along the length of the bottom surface portion 80. The width dimension of the surface portion 50 of the intermediate plate 5 is smaller than the dimension between the inner surfaces of the first and second side walls 81 and 82, and the dimension between the tips of the pair of protrusions 57 is approximately the same as (slightly smaller than) the dimension between the inner surfaces of the first and second side walls 81 and 82, allowing them to slide relative to the first and second side walls 81 and 82. The width dimension of the surface portion 60 of the compression plate 6 and the width dimension of the surface portion 70 of the operation plate 7 are approximately the same as (slightly smaller than) the dimension between the first and second side walls 81 and 82, allowing them to slide relative to the first and second side walls 81 and 82. The width dimension of the wide portion 51 at the tip end of the intermediate plate 5 is larger than the dimension between the inner surfaces of the first side wall 81 and the second side wall 82, and is approximately the same as the dimension between the outer surfaces of the first side wall 81 and the second side wall 82.

When the intermediate plate 5 is set on the bottom plate 8, the leading edges 810, 820 of the first side wall 81 and the second side wall 82 abut against the outer surface of the second rising piece 53 of the intermediate plate 5, and the hanging piece 72 at the base end of the face portion 70 of the operating plate 7 set on the intermediate plate 5 is approximately aligned with the rear ends of the first side wall 81 and the second side wall 82.

[B-7] Cover Plate As shown in FIG. 9 , the cover plate 9 includes a rectangular top surface 90 in plan view, a hanging wall 91 at the base end of the top surface 90, and first and second side walls 92 and 93 that hang down from both widthwise edges of the top surface 90, with the tip end open. The length of the cover plate 9 is shorter than the length of the bottom plate 8 and longer than the length of the side walls 81 and 82 of the bottom plate 8. An opening 94 is formed at the tip end of the top surface 90, and an opening 95 is formed at the base end of the top surface 90. U-shaped insertion holes 920 and 930 are formed in the first and second side walls 92 and 93, respectively, at positions rearward of the opening 94 in the top surface 90. A recess 910 is formed by cutting out the lower end of the hanging wall 91 at the base end. The width of the recess 910 is slightly larger than the width of the rear surface 73 of the operation plate 7.

The rising piece 44 at the base end of the claw 4 is positioned in the opening 94. The rising piece 44 of the claw 4 moves back and forth within the opening 94 when the claw 4 moves. The opening 94 has a first edge 940 on the rear side and a second edge 941 on the front side. When the operating plate 7 is in the first position, the rising piece 44 is close to or abuts the first edge 940. When the operating plate 7 moves in the first direction, the rising piece 44 moves forward within the opening 94 and abuts the second edge 941.

The opening 95 exposes the surface portion 70 of the operation plate 7, and when the operation plate 7 is in the first position, the first display portion G is positioned in the opening 95 and exposed, and when the operation plate 7 is in the second position, the second display portion R is positioned in the opening 95 and exposed.

The dimension between the inner surfaces of the first side wall 92 and the second side wall 93 of the cover plate 9 is slightly larger than the dimension between the outer surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and by placing the cover plate 9 over the bottom plate 8, a case for the wind-resistant hook F is formed. Locking holes 96 are formed in the upper half of both widthwise ends of the hanging wall 91, and the locking protrusions 811, 821 at the rear ends of the first side wall 81 and the second side wall 82 of the bottom plate 8 are locked into the locking holes 96, thereby positioning the cover plate 9 in the longitudinal direction of the bottom plate 8. At this time, the insertion holes 920, 930 in the first side wall 92 and second side wall 93 of the cover plate 9 are aligned with the screw holes 812, 822 in the first side wall 81 and second side wall 82 of the bottom plate 8, respectively, and the first side wall 92 and second side wall 93 of the cover plate 9 are fixed to the first side wall 81 and second side wall 82 of the bottom plate 8 by the screws 17.

[B-8] Assembly of Wind-Resistant Hook The intermediate plate 5, claw portion 4, compression plate 6, operation plate 7, first coil spring 12, second coil spring 13, and lock spring 14 are arranged and set on the bottom plate 8, and then the cover plate 9 is placed over it, thereby storing these elements in a case consisting of the bottom plate 8 and cover plate 9 to form a wind-resistant hook unit. When set, the claw portion 4 is in the stored position and the operation plate 7 is in the first position, and the cover plate 9 is placed over it and fixed to the bottom plate 8, thereby fixing the positions of each element.

The width dimension of the wide portion 51 of the intermediate plate 5 is larger than the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and is located toward the tip of the first side wall 81 and the second side wall 82. The dimension between the protrusions 57 of the intermediate plate 5 is approximately the same as the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the intermediate plate 5 can slide longitudinally with the surface portion 50 placed on the upper surface of the bottom surface portion 80. The intermediate plate 5 is set with the surface portion 50 placed on the bottom surface portion 80 of the bottom plate 8, and the outer surfaces of the rising pieces 53 at both widthwise ends of the wide portion 51 on the tip side abutting the tip edges 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8. From this state, the intermediate plate 5 can slide forward.

The claw portion 4 is positioned so that the bent portion of the main body (front portion 40 and rear portion 41) abuts against the front portion 80A of the bottom surface 80 of the bottom plate 8, and the base end portion (the corner formed by the base end portion 41' of the rear portion 41 and the hanging piece 43) is engaged with a pair of rising pieces 52 at the tip end portion of the intermediate plate 5. The hanging piece 43 and rising piece 44 at the base end portion of the claw portion 4 are inclined relative to the bottom surface (wide portion 51) of the groove 58, and the pair of hanging pieces 43 are received in the groove 58 with some play. From this position, the claw portion 4 can slide forward while the bent portion of the main body slides against the front portion 80A of the bottom surface 80 of the bottom plate 8, and can also rotate to rise from the front portion 80A.

The width dimension of the surface portion 70 of the operation plate 7 is approximately the same as the dimension between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the lower end portion of the inner surface of the hanging piece 71 abuts against the front edge 570 of the protruding piece 57 of the intermediate plate 5, the lower end abuts against the upper surface of the bottom surface portion 80 of the bottom plate 8, and the rear surface portion 73 abuts against the upper surface of the bottom surface portion 80 of the bottom plate 8. At this time, the upper surface of the surface portion 70 of the operation plate 7 extends horizontally.

When the first coil spring 12 is stretched from its natural length when no external force is acting on it, its tip is connected to the connecting portion 711 of the operation plate 7 and its base end is connected to the connecting portion 540 of the intermediate plate 5, with part of the upper side of the first coil spring 12 positioned in the opening 75 of the face portion 70 and part of the lower side positioned in the opening 55 of the face portion 50.

The first position of the operation plate 7 is locked by engaging the mating projection 140 of the lock spring 14 attached to the second side wall 82 of the bottom plate 8 with the first mating receiving portion 78 on the side edge 700 of the face portion 70 of the operation plate 7 to establish a first mated state. From this state, the operation plate 7 can be slid forward by releasing the first mated state.

The width of the compression plate 6 is approximately the same as the distance between the inner surfaces of the first side wall 81 and the second side wall 82 of the bottom plate 8, and the left and right ends of the distal end portion rest on the upper ends of the rising pieces 53 that form the groove 58, with the lower ends of the hanging pieces 62 abutting against the upper surface of the surface portion 50 of the intermediate plate 5. At this time, the surface portion 60 of the compression plate 6 extends horizontally.

When the second coil spring 13 is stretched from its natural length when no external force is acting on it, its tip is connected to the connecting portion (rising piece 56) of the intermediate plate 5 and its base end is connected to the connecting portion 620 of the compression plate 6. Part of the upper side of the second coil spring 13 is located in the opening 63 of the face portion 60, and part of the lower side is located in the opening 55 of the face portion 50.

The compression plate 6 is in contact with the inclined rising piece 44 at the base end of the claw 4, with the abutment portion 61 at the tip thereof pressing it forward. From this state, the compression plate 6 can slide forward integrally with the operation plate 7 and intermediate plate 5.

With the intermediate plate 5, claw portion 4, operating plate 7, and compression plate 6 set on the bottom plate 8, the cover plate 9 is placed on top, and the locking projections 811, 821 at the rear ends of the first side wall 81 and second side wall 82 of the bottom plate 8 are engaged with the locking holes 96 to position the plate. The first side wall 92 and second side wall 93 of the cover plate 9 are then fixed to the first side wall 81 and second side wall 82 of the bottom plate 8 with screws 17. The width dimension of the wide portion 51 of the intermediate plate 5 is approximately the same as (slightly smaller than) the dimension between the inner surfaces of the first side wall 92 and second side wall 93 of the cover plate 9, and both widthwise edges of the wide portion 51 of the intermediate plate 5 are in sliding contact with the inner surfaces of the first side wall 92 and second side wall 93 of the cover plate 9. The widthwise edges of the projections 57 of the intermediate plate 5 are in sliding contact with the inner surfaces of the first side wall 81 and second side wall 82 of the bottom plate 8. Therefore, the front side of the intermediate plate 5 is in sliding contact with the inner surface of the case, and the rear side is in sliding contact with the inner surface of the case, allowing it to slide stably relative to the case. The rear surface portion 73 of the operation plate 7 extends rearward through the recess 910, and the raised piece 74 serves as a finger hook when sliding the operation plate 7. A portion of the claw portion 4 is located forward of the leading edge 900 of the top surface portion 90, the leading edge 921 of the first side wall 92, and the leading edge 931 of the second side wall 93. The raised piece 44 of the base end portion of the claw portion 4 is located on the side closer to the first edge 940 of the opening 94. The top surface portion 90 of the cover plate 9 and the surface portion 70 of the operation plate 7 are closely opposed to each other, and the first display portion G of the surface portion 70 of the operation plate 7 is exposed in the opening 95. A scratch-resistant seal 97 is attached to the surface of the base end of the case, covering the top surface 90, first side wall 92, and second side wall 93, preventing direct contact between the case surface and the slats 10 when the shutter curtain 1 is rolled up.

[B-9] The movable mounting plate wind-resistant hook F is attached to the longitudinal end of the slat 10 via a mounting plate 15. As shown in FIG. 10 , the mounting plate 15 comprises a surface portion 150 that is rectangular in plan view. The surface portion 150 has side edges 1500, 1500 extending in the longitudinal direction and a front edge 1501. A pair of slide locking pieces 151 are formed in a raised shape, positioned forward of the midpoint of the side edges 1500, 1500 in the longitudinal direction. A raised piece 152 is formed on the rear end of the surface portion 150, and a rear piece 153 is formed extending rearward from the raised piece 152, with a screw hole 154 formed in the rear piece 153.

As shown in Figure 17, the slat 10 consists of a surface portion 100 of a predetermined height, an upper interlocking portion 101 integrally formed at the upper end of the surface portion 100, and a lower interlocking portion 102 integrally formed at the lower end of the surface portion 100. The surface portion 100 is bulging or approximately trapezoidal in side view or cross-sectional view. In this specification, the bulging side is referred to as the front side and the recessed side is referred to as the back side. A space is formed on the back side of the slat 10, and a wind-resistant hook F is attached so that it fits into this space.

The installation of the wind-resistant hook F according to this embodiment will be described with reference to Figures 17 and 18. As shown in Figure 17, the back surface of the face portion 150 of the mounting plate 15 is abutted against the back surface of the face portion 100 of the slat 10, and the front edge 1501 of the mounting plate 15 is aligned with the longitudinal edge 103 of the slat 10 and fixed with rivets 155.

The wind-resistant hook F is attached to the mounting plate 15, which is attached at the longitudinal end of the back surface of the slat 10. As shown in Figures 17 and 18 (top), the bottom surface 80 of the bottom plate 8 of the wind-resistant hook F is temporarily attached from the front to the surface of the face portion 150 of the mounting plate 15. At this time, a pair of slide locking pieces 151 are inserted into the slits 87 formed in the bottom surface 80, and the bottom surface 80 is abutted against the surface of the face portion 150. The rivet 155 is located within the notch 801 formed in the bottom surface 80. The rear rising piece 84 of the bottom surface 80 abuts against the rear rising piece 152 of the face portion 150 of the mounting plate 15, and the horizontal piece 85 abuts against the rear piece 153.

From the state shown in the upper part of Figure 18, sliding the wind-resistant hook F toward the tip relative to the mounting plate 15 moves the slit 87 relative to the slide locking piece 151, engaging the slide locking piece 151 with the slit 87, resulting in the state shown in the lower part of Figure 18. In the lower part of Figure 18, the tip edge 800 of the bottom surface portion 80 of the wind-resistant hook F coincides with the longitudinal edge 103 of the slat 10, and the protruding piece 83 protrudes from the longitudinal edge 103 of the slat 10. The screw hole 154 in the rear piece 153 coincides with the insertion hole 850 in the horizontal piece 85, and the rear end portion of the wind-resistant hook F is fixed to the rear end portion of the mounting plate 15 with the screw 18. Note that in the lower part of Figure 18, the rivet 155 is located approximately in the center of the cutout portion 801. To remove the wind-resistant hook F, simply remove the screw 18 and slide the wind-resistant hook F relative to the mounting plate 15 in a direction that releases the engagement between the slide locking piece 151 and the slit 87. Attaching the wind-resistant hook F to the slat 10 via the mounting plate 15 makes it easy to replace the wind-resistant hook F.

[B-10] Hook Receptacle: A hook receiver 16 is provided inside the guide rail 3, capable of engaging an activated wind-resistant hook F. As shown in Figures 2 and 21(C), the guide rail 3 is attached to the main frame or wall W via a guide rail base material 3'. The guide rail 3 has a U-shaped cross section, consisting of opposing first and second side walls 30 and 31, and a bottom wall 32 connecting the base ends of the first and second side walls 30 and 31. The second side wall 31 is fixed to the guide rail base material 3'. A guide groove 35 is formed between the front portion 33 of the first side wall 30 and the front portion 34 of the second side wall 31 to receive the longitudinal end of the slat 10. Within the guide rail 3, a space extending from the guide groove 35 to the bottom wall 32 with the same width serves as a slat end receiving space. In this embodiment, the hook receiver 16 is located at a predetermined height of the guide rail 3 and is fixed to the inner surface of the first side wall 30 of the guide rail 3. The hook receiver 16 is provided inside the guide rail 3 but is not located in the slat end receiving space, and does not affect the opening and closing operation of the shutter curtain 1. Note that the shutter in this embodiment is a forward winding shutter, but in the case of a reverse winding shutter, the first side wall 30 is fixed to the guide rail base material 3' instead of the second side wall 1 of the guide rail 3. Therefore, in the case of a forward winding shutter, the hook receiver 16 is located on the side of the shutter core farther from the guide rail base material 3', but in the case of a reverse winding shutter, the hook receiver 16 is located on the side of the shutter core closer to the guide rail base material 3'.

As shown in FIG. 11 , the hook receiver 16 has an L-shape in plan view or cross section, consisting of a first edge 160 extending in the forward direction of the guide rail 3 and a second edge 161 extending in the forward direction of the guide rail 3. The first edge 160 is fixed to the inner surface of the first side wall 30 of the guide rail 3, and the second edge 161 extends in the forward direction from the first side wall 30 inside the guide rail 3. In this embodiment, the hook receiver 16 is fixed to the first side wall 30 at two points, top and bottom, but it may be fixed at three or more points. The width of the second edge 161 is such that the second edge 161 does not interfere with the longitudinal end of the slat 10 received inside the guide rail 3. The hook receiver 16 is fixed at a height corresponding to the height of each wind-resistant hook F when the opening is fully closed. In this embodiment, one hook receiver 16 is provided for each wind-resistant hook F, and as shown in FIG. 1, four hook receivers 16 are provided on each side. The hook receiver 16 is an elongated member with a predetermined height, which in this embodiment is greater than the height dimension of the slat 10.

An upper surface 162 is formed at the upper end of the hook receiver 16, and a lower surface 163 is formed at the lower end. The upper surface 162 and the lower surface 163 are rectangular in plan view, and have a projected dimension that is larger than the first side 160 but approximately the same as the second side 161, so as not to interfere with the raising and lowering of the shutter curtain 1 under normal conditions.
When the claw portion 4 in the locked position moves upward, it abuts against the upper surface 162, restricting further upward movement of the shutter curtain 1. The hook receiver 16 according to this embodiment has a vertically symmetrical shape, and when the hook receiver 16 is turned upside down, the lower surface 163 functions as the abutting portion. If the use of the hook receiver 16 turned upside down is not taken into consideration, the lower surface 163 is an optional element. The hook receiver 16 is integrally formed by bending a plate material of a predetermined shape.

[C] Operation of the Wind-Resistant Hook The operation plate 7, intermediate plate 5, and compression plate 6 are housed in a case consisting of a bottom plate 8 and a cover plate 9 and are movable in the front-to-rear direction, and the claw portion 4 is movable between a stored position and a locked position in conjunction with the sliding operation of the operation plate 7. The operation of each element of the wind-resistant hook F will be described in detail with reference to Figures 12 to 16. Note that Figures 12 to 16 are merely examples of the position and location of each element of the wind-resistant hook F according to this embodiment, and the description of the position and location of each element should not be construed as limiting the present invention.

Figure 12 shows the state in which the operating plate 7 is in the first position and the claw portion 4 of the wind-resistant hook is in the stored position. The claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are located on the base end side. Figure 15 shows the state in which the operating plate 7 is in the second position and the claw portion 4 of the wind-resistant hook is in the locked position. The claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are located on the tip end side. Figure 13 shows the state in which the claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 have moved forward from the state in Figure 12, and the raised piece 44 of the base end portion of the claw portion 4 abuts the second edge 941 of the opening 94. Figure 14 shows the state in which the intermediate plate 5 and operating plate 7 have moved forward from the state in Figure 13, and the claw portion 4 has rotated, resulting in the state in Figure 15 from the state in Figure 14. The state shown in Figure 12 to the state shown in Figure 15 is a series of operations. Figure 16 shows the state shown in Figure 15 when a force is applied that pushes the claw portion 4 in.

[C-1] Inoperative State of Wind-Resistant Hook In Figure 12, the claw portion 4 is in the retracted position, and the wind-resistant hook F is in an inoperative state. The posture and position of each element when the wind-resistant hook F is in an inoperative state will be described. The body of the claw portion 4 has the bent portions of the front portion 40 and rear portion 41 abutting against the upper surface of the front portion 80A of the bottom surface 80 of the bottom plate 8, and the front portion 40 and rear portion 41 extend so as to rise at an angle from the upper surface of the front portion 80A of the bottom surface 80. The hanging piece 43 and rising piece 44 at the base end portion of the claw portion 4 are in an inclined posture in a side view relative to the bottom of the recessed groove 58, with the upper end of the rising piece 44 facing forward and the lower end of the hanging piece 43 facing backward. The tip end portion of the front portion 40 and the locking piece 42 are located more tip-side than the tip edge 900 of the cover plate 9, the tip edge 921 of the first side wall 92, and the tip edge 931 of the second side wall 93, and the locking piece 42 of the claw portion 4 is located inside the tip edge 800 of the bottom surface portion 80, with the tip of the locking piece 42 being at approximately the same height as the top surface portion 90 of the cover plate 9. The tip edge 800 and the protruding piece 83 of the bottom surface portion 80 of the bottom plate 8 are located forward of the tip end portion of the front portion 40 of the claw portion 4 and the locking piece 42.

The rising piece 44 of the claw portion 4 is in contact with or close to the first edge 940 of the opening 94. The hanging piece 43 of the claw portion 4 is located slightly spaced distally from the rising piece 53 at the distal end of the intermediate plate 5, and the hanging piece 43 and/or the base end portion 41' of the rear portion 41 is in contact with or close to the rising piece 52. In one embodiment, the corner formed by the base end side of the hanging piece 43 and the base end portion 41' of the rear portion 41 engages with the upper end of the rising piece 52. The hanging piece 43 may also be close to or in contact with the rising piece 53 at the distal end of the intermediate plate 5.

The lower surface of the distal end portion of the face portion 60 of the compression plate 6 abuts against the upper end of the rising piece 53 of the distal end portion of the intermediate plate 5, and the abutment portion 61 abuts against the rising piece 44, which is in an inclined position at the base end portion of the claw portion 4, pressing the rising piece 44 toward the distal end. The distal edges 810, 820 of the first side wall 81 and the second side wall 82 of the bottom plate 8 abut against the outer surface of the rising piece 53 formed on the wide portion 51 at the distal end of the intermediate plate 5. When the face portion 50 of the intermediate plate 5 is received in the recess 710, the inner surface of the hanging piece 71 abuts against the front edge 570 of the protruding piece 57 of the intermediate plate 5. The fitting protrusion 140 of the lock spring 14 is in a fitted state (first fitted state) with the first fitting receiving portion 78 formed on the side edge 700 of the surface portion 70 of the operation plate 7, and the operation plate 7 is held in a first position. In other words, the non-operating state shown in Figure 12 is locked. In the state shown in Figure 12, the operation plate 7, intermediate plate 5, compression plate 6, and claw portion 4 are located on the base end side, and by releasing the locked state, they can be moved toward the tip end side (first direction).

The operation plate 7 and intermediate plate 5 are connected by a first coil spring 12. When the operation plate 7 is moved in a first direction from the first position, the tip side of the first coil spring 12 moves in the first direction, and the base side of the first coil spring 12 moves in the first direction, causing the base side of the intermediate plate 5 to move in the first direction. At this time, the first coil spring 12 moves while maintaining its length (without stretching) due to the biasing force. When the tip side of the intermediate plate 5 moves in the first direction, the base side portion of the claw portion 4, which is loosely fitted in the groove 58, moves in the first direction.

The operation plate 7 and compression plate 6 are connected by the second coil spring 13. When the operation plate 7 is moved in the first direction, the tip side of the second coil spring 13 moves in the first direction, and the base end side of the second coil spring 13 moves in the first direction via the intermediate plate 5, causing the base end side of the compression plate 6 to move in the first direction. The compression plate 6 moves in the first direction while the tip abutment portion 61 remains in abutment against the base end portion of the rising piece 44 of the claw portion 4.

The first coil spring 12 and the second coil spring 13 are formed from the same tension coil spring, and in the state shown in Figure 12, the length of the first coil spring 12 is slightly longer than the length of the second coil spring 13. That is, the force (biasing force) of the first coil spring 12 to return to its original length is greater than the force (biasing force) of the second coil spring 13 to return to its original length. The biasing force of the first coil spring 12 counteracts the force that causes the first coil spring 12 to expand, and the biasing force of the second coil spring 13 counteracts the force that causes the second coil spring 13 to expand. The biasing force of the first coil spring 12 is related to the rotational return force of the claw portion 4 to the engaging position in the state shown in Figure 16; if this rotational return force is to be increased, the biasing force of the first coil spring 12 should be increased. The biasing force of the second coil spring 13 is related to the force with which the compression plate 6 presses the proximal end portion of the claw (rising piece 44) forward; if this pressing force needs to be increased, the biasing force of the second coil spring 13 can be increased (as long as it does not exceed the biasing force of the first coil spring 12 initially). The biasing forces of the first coil spring 12 and the second coil spring 13 can be changed by changing the connection position of the first coil spring 12 and the second coil spring 13 or by changing the spring type. For example, by positioning the leading edge 570 of the intermediate plate 5 further forward, the first coil spring 12 can be stretched further when set, thereby increasing the biasing force.

[C-2] Movement from inactive state to active state When the operating plate 7 is slid in the first direction in the state shown in Figure 12, the operating plate 7, intermediate plate 5, and compression plate 6 move together in the first direction until the rising piece 44 on the base end side of the claw portion 4 abuts the second edge 941 on the tip side of the opening 94, resulting in the state shown in Figure 13.

When changing from the state shown in Figure 12 to the state shown in Figure 13, the claw portion 4 slides in the first direction while maintaining the storage position shown in Figure 12. In the state shown in Figure 12, the tip (upper end) of the rising piece 52 at the tip side portion of the intermediate plate 5 abuts against the base side portion of the claw portion 4 (base side portion 41' of the rear portion 41), and the abutment portion 61 at the tip of the compression plate 6 presses the base side portion (rising piece 44) of the claw portion 4 toward the tip side.When the intermediate plate 5 slides in the first direction in this state, the tip (upper end) of the rising piece 52 at the tip side portion of the intermediate plate 5 moves in the first direction while abutting against the base side portion 41' of the rear portion 41 of the claw portion 4, and the compression plate 6 moves in the first direction integrally with the intermediate plate 5, and the abutment portion 61 at the tip of the compression plate 6 presses the rising piece 44 of the claw portion 4 toward the tip side, and the rising piece 44 at the base side portion of the claw portion 4 abuts against the second edge 941 of the opening 94, resulting in the state shown in Figure 13. In conjunction with the continued sliding movement of the operation plate 7 in the first direction, the operation plate 7 moves further from the state shown in Figure 13 to the state shown in Figure 14 to the second position, entering the second engaged state and activating the wind-resistant hook F shown in Figure 15. In conjunction with the sliding movement of the operation plate 7 in the first direction from the first position to the second position, the intermediate plate 5 slides in the first direction (forward), and the outer surfaces of the pair of rising pieces 53 on the tip side of the intermediate plate 5 move away from the tip edge 810 of the first side wall 81 and the tip edge 820 of the second side wall 82 of the bottom plate 8, respectively.

In the state shown in Figure 13, the claw portion 4, intermediate plate 5, compression plate 6, and operating plate 7 are positioned further toward the tip relative to the bottom plate 8 and cover plate 9 than in the state shown in Figure 12. In the state shown in Figure 13, the abutment portion 61 at the tip of the compression plate 6 abuts and presses against the rising piece 44 of the claw portion 4 that is abutting against the second edge portion 941, restricting further movement toward the tip. When the movement of the rising piece 44 of the base end portion of the claw portion 4 in the first direction is restricted and the tip end portion of the intermediate plate 5 (the portion having the groove 58) slides in the first direction, the hanging piece 43 of the base end portion of the claw portion 4 is received in the groove 58 with some play and is able to rotate within the groove 58.Therefore, the base end portion of the claw portion 4 (the base end portion 41' of the rear portion 41, and/or the hanging piece 43) is pushed forward by the tip end portion of the intermediate plate 5 (the rising piece 52, and/or the rising piece 53), and the claw portion 4 rotates so that the main body (the front portion 40 and the rear portion 41) rises from the bottom portion 80, with the rising piece 44 abutting the second edge portion 941 as a fulcrum. When the operation plate 7 and intermediate plate 5 move from the state shown in Figure 12 to the state shown in Figure 13, the contact portion 61 of the pressure plate 6 constantly presses the rising piece 44 at the base end of the claw portion 4 forward, so the claw portion 4 does not rotate but slides forward while maintaining the position shown in Figure 12.

12 and 13, the hanging piece 43 and the rising piece 44 at the base end portion of the claw portion 4 are inclined relative to the front portion 80A of the bottom surface 80 and the bottom surface (wide portion 51) of the groove 58. As the main body of the claw portion 4 rotates away from the front portion 80A of the bottom surface 80, the angle of inclination of the hanging piece 43 and the rising piece 44 at the base end portion relative to the front portion 80A of the bottom surface 80 and the bottom surface (wide portion 51) of the groove 58 increases. As the operating plate 7 continues to move in the first direction from the state shown in FIG. 13, the tip end portion of the intermediate plate 5 (the portion including the groove 58) moves in the first direction relative to the claw portion 4 in which the rising piece 44 abuts the second edge 941 of the opening 94, and the rising piece 44 and the hanging piece 43, which were in an inclined position, rotate to a vertical position with the rising piece 44 as a fulcrum. As shown in Figure 14, as the hanging piece 43 and rising piece 44 at the base end of the claw 4 rotate from an inclined position to a vertical position, the front portion 40 and tip-side locking piece 42 of the claw 4 rise from the front portion 80A of the bottom surface 80, and the hanging piece 43 and rising piece 44 assume a vertical position along the inner surface of the rising piece 53 at the tip end of the intermediate plate 5. When the rear portion 41 assumes a horizontal position, the claw 4 assumes the locking position. When the hanging piece 43 and rising piece 44 at the base end of the claw 4 are in the vertical position, the hanging piece 43 abuts or is close to the inner surface of the rising piece 53 at the tip end of the intermediate plate 5, and the lower surface of the rear portion 41 is spaced apart from the upper end of the rising piece 52 at the tip end of the intermediate plate 5.

In this embodiment, when moving from the state shown in FIG. 12 to the state shown in FIG. 14, the second coil spring 13 stretches slightly, while the length of the first coil spring 12 remains essentially unchanged. When moving from the state shown in FIG. 14 to the state shown in FIG. 15, the second coil spring 13 continues to extend, and the first coil spring 12 also extends (at this stage, the extension of the second coil spring 13 is greater than that of the first coil spring 12). When the operating plate 7 slides in the first direction after the rising piece 44 on the base end side of the claw portion 4 abuts the second edge portion 941 on the tip side of the opening 94, the intermediate plate 5 slides in the first direction, and at this time, the compression plate 6 slides relative to the intermediate plate 5, and the second coil spring 13 connecting the compression plate 6 and the intermediate plate 5 is pulled, increasing its biasing force. This force acts to maintain the engagement position of the claw portion 4.

In the state shown in Figure 12, when a finger is placed on the raised piece 74 of the operation plate 7 and a force is applied to move the operation plate 7, which is in the first position, in the first direction, the first mated state between the mating protrusion 140 of the lock spring 14 and the first mating receiver 78 is released. When the operation plate 7 slides in the first direction from the state shown in Figure 12 to the state shown in Figure 15, the mating protrusion 140 of the lock spring 14 provided on the second side wall 82 of the bottom plate 8 comes into sliding contact with the bottom edge 704 of the recess 701 provided on the side edge 700 of the surface portion 70 of the operation plate 7. When the operation plate 7 reaches the second position, the mating protrusion 140 of the lock spring 14 and the second mating receiver 79 engage to establish a second mated state, and the second position of the operation plate 7 is maintained.

[C-3] Operated state of wind-resistant hook In Figure 15, the claw portion 4 is in the locked position and the wind-resistant hook F is in the operated state. The position and posture of each element when the wind-resistant hook F is in the operated state will be explained. The body of the claw portion 4 is such that the folded portions of the front portion 40 and rear portion 41 rise up so as to be separated from the front portion 80A of the bottom surface 80 of the bottom plate 8, and the rear portion 41 extends approximately parallel to the upper surface of the front portion 80A of the bottom surface 80.

The hanging piece 43 and rising piece 44 at the base end of the claw portion 4 abut or are close to the inner surface of the second rising piece 53 at the tip end of the intermediate plate 5, and are in a substantially vertical position relative to the bottom (wide portion 51) of the groove 58. The rising piece 44 at the base end of the claw portion 4 abuts against the second edge 941 of the opening 94 in the upper surface 90 of the cover plate 9, and the upper surface of the rear portion 41, which is in a horizontal position, abuts against or is close to the underside of the upper surface 90 of the cover plate 9.

The underside of the rear portion 41 in the horizontal position is spaced apart from the upper end of the rising piece 52 at the tip end of the intermediate plate 5. The entire front portion 40 is located further forward than the tip edge 900 of the cover plate 9, the tip edge 921 of the first side wall 92, and the tip edge 931 of the second side wall 93, and the locking piece 42 extends in a folded manner from the tip of the front portion 40. The positional relationship between the locking piece 42 of the claw portion 4 in the locked position and the hook receiver 16 will be described later. The tip of the claw portion 4 (the bent portion consisting of the base end of the locking piece 42 and the tip of the front portion 40) is located in approximately the same position as the tip of the protruding piece 83.

The distal end portion of the surface 60 of the compression plate 6 is located behind the upper end of the rising piece 53 at the distal end portion of the intermediate plate 5, and the abutment portion 61 abuts against the vertically positioned rising piece 44 at the proximal end portion of the claw 4, pressing the rising piece 44 against the second edge 941 of the opening 94. The compression plate 6 slides relative to the intermediate plate 5, and the second coil spring 13 connecting the compression plate 6 and the intermediate plate 5 is pulled, increasing its biasing force. This force acts to maintain the engagement position of the claw 4. As shown in Figure 15, the lower surface of the widthwise central portion on the distal side of the surface 60 of the compression plate 6 rests on the upper end of the rising piece 56, maintaining the horizontal position of the compression plate 6.

The outer surface of the rising piece 53 formed on the wide portion 51 at the tip end of the intermediate plate 5 is spaced forward from the tip edges 810, 820 of the first side wall 81 and second side wall 82 of the bottom plate 8 (different from the state in Figure 12). When the surface portion 50 of the intermediate plate 5 is received in the recess 710, the inner surface of the hanging piece 71 of the operation plate 7 abuts the front edge 570 of the protruding piece 57 of the intermediate plate 5 (same state as Figure 12).

The mating protrusion 140 of the lock spring 14 is in a mated state (second mated state) with the second mating receiving portion 79 formed on the side edge 700 of the surface portion 70 of the operation plate 7, and the operation plate 7 is maintained in the second position. In other words, the locking position of the claw portion 4, i.e., the operational state of the wind-resistant hook F, is locked.

[C-4] Rotation of Claws in the Operated State of the Wind-Resistant Hooks Figure 16 shows a state in which, when claws 4 are in the locked position and wind-resistant hook F is in the activated state, a force is applied to claws 4 in the locked position to return them to the stored position. When claws 4, which have rotated away from front portion 80A of bottom surface portion 80 of bottom plate 8, are pushed toward front portion 80A, claws 4 rotate such that, with rising piece 44 at the base end portion of claws 4 abutting second edge 941 of opening 94, hanging piece 43 and rising piece 44 rotate from the vertical position to an inclined position, and base end portion 41' of rear portion 41 and/or hanging piece 43 abuts against the upper end of rising piece 52 at the tip end portion of intermediate plate 5, and/or hanging piece 43 abuts against rising piece 53, moving intermediate plate 5 rearward (as if pushing it into the case).

The abutment portion 61 of the compression plate 6 abuts against the rising piece 44, which is in an inclined position at the base end portion of the claw portion 4, pressing the rising piece 44 against the second edge portion 941 of the opening 94. However, because the intermediate plate 5 is pushed rearward, the length of the second coil spring 13, which was stretched in the state shown in Figure 15, is shortened in the state shown in Figure 16.

In the second position of the operation plate 7, the locked state is maintained by maintaining the engagement between the engagement protrusion 140 of the lock spring 14 and the second engagement receiving portion 79 (second engagement state). As the intermediate plate 5 moves rearward, the front edge 570 of the projection 57 of the intermediate plate 5 moves rearward away from the hanging piece 71 of the operation plate 7. At this time, the first coil spring 12 expands, and a force is applied that moves the intermediate plate 5 in the first direction. The force that expands the first coil spring 12 (when moving from the state shown in Figure 15 to the state shown in Figure 16) is smaller than the force that disengages the engagement between the engagement protrusion 140 of the lock spring 14 and the second engagement receiving portion 79 (second engagement state). Therefore, the first coil spring 12 expands in conjunction with the movement of the intermediate plate 5 in the second direction, preventing the second engagement state from being disengaged. When the force acting on the claw portion 4 is released, the intermediate plate 5 moves forward (in the first direction) due to the biasing force (compression force) of the first coil spring 12, and the claw portion 4 returns to the locked position shown in Figure 15.

[D] Wind-resistant hook according to another embodiment [D-1] Other embodiment 1
A wind-resistant hook F' according to another embodiment will be described with reference to Figures 28 and 29. The wind-resistant hook F' is similar to the wind-resistant hook F in that it includes a claw portion 4, an intermediate plate 5, a compression plate 6, an operation plate 7, a bottom plate 8, a cover plate 9, a first coil spring 12, a second coil spring 13, and a lock spring 14. The description of the wind-resistant hook F can be used to explain the operation and function of these elements, except for the following differences. In the wind-resistant hook F, when the operation plate 7 is in the first position, the fitting protrusion 140 of the lock spring 14 and the first fitting receiving portion 78 formed on the side edge 700 of the face portion 70 of the operation plate 7 are fitted together (first fitted state), thereby maintaining the operation plate 7 in the first position. In the wind-resistant hook F', a third coil spring 24 is provided to maintain the operation plate 7 in the first position. Specifically, the front end of the third coil spring 24 is connected to the hanging piece 72 located on the rear side of the face portion 70 of the operation plate 7, and the rear end of the third coil spring 24 is connected to the hanging wall 91 of the cover plate 9. In the wind-resistant hook F', when the operation plate 7 in the first position moves in the first direction, the third coil spring 24 extends first, then the second coil spring 13 extends, and finally the first coil spring 12 extends. Figure 28 shows the wind-resistant hook F' in an inoperative state, with the operation plate 7 in the first position. Figure 29 shows the wind-resistant hook F' in an activated state, with the operation plate 7 in the second position. When the operation plate 7 is in the first position, the third coil spring 24 holds the operation plate 7 in the first position. When the operation plate 7 slides from the first position to the second position, the fitting protrusion 140 of the lock spring 14 fits into the fitting receptacle 79' formed on the side edge of the rear surface 73 of the operation plate 7, maintaining the operation plate 7 in the second position and locking the operation state of the wind-resistant hook F'. As the operation plate 7 slides from the first position to the second position, the third coil spring 24 expands and accumulates a force that returns it to its original length. In the state shown in Figure 29, when the engagement state at the second position is released and the operation plate 7 in the second position is slid to the first position, the third coil spring 24 assists the sliding movement of the operation plate 7 in the second direction, and the operation plate 7 is maintained in the first position by the third coil spring 24.

[D-2] Other embodiment 2
30 and 31 , the wind-resistant hook F equipped with a stopper will be described. The wind-resistant hook F is similar to the wind-resistant hook F in that it includes a claw portion 4, an intermediate plate 5, a compression plate 6, an operating plate 7, a bottom plate 8, a cover plate 9, a first coil spring 12, a second coil spring 13, and a lock spring 14. The description of the wind-resistant hook F can be applied to the description and operation of these elements, except for the stopper (protrusion 730). The rear surface 73 of the operating plate 7 of the wind-resistant hook F is located outside the case (bottom plate 8, cover plate 9) of the wind-resistant hook F, and a low, disc-shaped protrusion 730 is formed at a predetermined position on the rear surface 73. This protrusion 730 functions as a stopper to prevent the operating plate 7 from being pushed in excessively when the wind-resistant hook F is activated. A detailed description will be given below.

Figure 30 shows the wind-resistant hook F in an inoperative state, with the operating plate 7 in the first position. When the operating plate 7 is in the first position, the protrusion 730 protruding from the rear surface 73 of the operating plate 7 is spaced rearward from the hanging wall 91 of the case of the movable wind-resistant hook F. The distance between the protrusion 730 and the hanging wall 91 at this time (the distance in the direction of movement of the operating plate 7) corresponds to the stroke (movement stroke of the operating plate 7) required for the operating plate 7, which is in the first position, to move to the second position. Figure 31 shows the wind-resistant hook F in an activated state, with the operating plate 7 in the second position. When the operating plate 7 is in the second position, the protrusion 730 protruding from the rear surface 73 of the operating plate 7 abuts against the lower portion of the hanging wall 91 of the cover plate 9 (case) of the movable wind-resistant hook F. When the operation plate 7 slides from the first position to the second position, the protrusion 730 of the operation plate 7 abuts against the hanging wall 91 of the cover plate 9, maintaining the second position. When the operation plate 7 slides from the first position to the second position, the fitting protrusion 140 of the lock spring 14 fits into the fitting receptacle 79 formed on one side edge 700 of the face portion 70 of the operation plate 7, maintaining the operation plate 7 in the second position and locking the activated state of the wind-resistant hook F. When the wind-resistant hook F is activated, a finger is hooked on the raised piece (finger hook) 74 of the operation plate 7 to slide the operation plate 7 from the first position to the second position. However, if the operation plate 7 in the second position is pushed in with more force, the fitting protrusion 140 of the lock spring 14 may deform, causing the lock spring 14 to come off the second side wall 82 of the bottom plate 8, and the locked state may no longer be maintained. In the wind-resistant hook F equipped with a stopper shown in Figures 30 and 31, when the operation plate 7 slides from the first position to the second position, the protrusion 730 on the operation plate 7 abuts the hanging wall 91, maintaining the second position. Even if a strong force is applied that pushes the operation plate 7 further, the operation plate 7 in the second position is prevented from being pushed further in, preventing the lock spring 14 inside the case from coming loose and making it impossible to maintain the locked state.

[E] Shutter with Movable Wind-Resistant Hooks. This embodiment of the shutter with wind-resistant hooks will be described. As shown in Figures 1 and 2, movable wind-resistant hooks F are provided at both longitudinal ends of a plurality of slats (four in this embodiment) 10 located at the midpoint of the shutter curtain 1 in the fully closed position. Each movable wind-resistant hook F has a movable claw 4, which must be switched between an inoperative state (claw 4 in the retracted position) and an operative state (claw 4 in the locked position). When the shutter curtain 1 is opened or closed, or when the opening is normally fully closed, the claw 4 is in the retracted position. When the opening is fully closed, the claw 4 is in the protruding position, functioning as a wind-resistant hook. Hook receivers 16 are provided inside the guide rail 3 at heights corresponding to the heights of the wind-resistant hooks F of the shutter curtain 1 in the fully closed position.

[E-1] Visual confirmation of the stored and activated states of the wind-resistant hooks. Figure 19 shows a front view and a side view of the longitudinal end of a slat 10 to which a wind-resistant hook F is attached, viewed from the back side. The wind-resistant hook F is attached to a recessed portion on the back side of the slat 10, with the bottom surface 80 of the bottom plate 8 facing the slat 10 and the top surface 90 of the cover plate 9 facing the back side (indoor side). The wind-resistant hook F is attached to the slat 10 with the leading edge 800 of the bottom surface 80 of the bottom plate 8 aligned with the longitudinal edge 103 of the slat 10. In this embodiment, the wind-resistant hook F is attached to the slat 10 via a mounting plate 15.

When the shutter curtain 1 is in the fully closed position, the tip portion of the wind-resistant hook F is located inside the guide rail 3. That is, the wind-resistant hook F consists of a first portion (inner portion) located inside the guide rail 3 and a second portion (outer portion) located outside the guide rail 3. The first portion (inner portion) includes the claw portion 4 and the opening 94 formed on the upper surface 90 of the cover plate 9, while the second portion (outer portion) includes the opening 95 formed on the upper surface 90 of the cover plate 9, the warning sign located between the openings 94 and 95 and provided on the upper surface 90 of the cover plate 9, the rear surface 73 of the operation plate 7, and the raised piece (finger hook) 74.

The upper figure shows the wind-resistant hook F in an inoperative state, with the claw 4 in the retracted position and the operating plate 7 in the first position. The first display G on the surface 70 of the operating plate 7 is located in and exposed from the opening 95 formed in the upper surface 90 of the cover plate 9. The claw 4 is positioned so as not to protrude from the longitudinal edge 103 of the slat 10. The raised piece 44 at the base end of the claw 4 is close to the first edge 940 of the opening 94 on the upper surface 90 of the cover plate 9. The protruding piece 83 at the tip of the bottom surface 80 protrudes from the longitudinal edge 103 of the slat.

The lower diagram shows the activated state of the wind-resistant hook F, with the claw 4 in the locked position and the operating plate 7 in the second position. The second display R on the surface 70 of the operating plate 7 is located in and exposed from the opening 95 formed in the upper surface 90 of the cover plate 9. The locking piece 42 at the tip of the claw 4 protrudes from the longitudinal edge 103 of the slat 10. The rising piece 44 at the base end of the claw 4 abuts the second edge 941 of the opening 94 on the upper surface 90 of the cover plate 9. The protruding piece 83 at the tip of the bottom surface 80 is in approximately the same position as the claw 4 (the corner between the locking piece 42 and the front portion 40) protruding from the longitudinal edge 103 of the slat.

A warning is displayed on the top surface 90 of the cover plate 9 of the wind-resistant hook F, located between the openings 94 and 95. The warning states that the shutter is locked (activated) when the second display R is exposed from the opening 95, and that the shutter is unlocked (inactivated) when the first display G is exposed from the opening 95, and that "Do not open or close the shutter when the second display R is exposed from the opening 95."

The wind-resistant hook F has a first part (inner part) located inside the guide rail 3 and a second part (outer part) located outside the guide rail 3. The second part (outer part) has the first display part G to the second display part R located in the opening 95 and exposed from the opening 95, as well as a warning display. When attempting to raise the shutter curtain 1 with the opening fully closed, the operator can visually determine whether the first display part G or the second display part R is exposed.

In this embodiment, the shutter curtain 1 is provided with multiple wind-resistant hooks F, which are provided at both longitudinal ends of multiple slats 10 (four in this embodiment) located in the middle of the height of the opening closure section 1' of the shutter curtain 1 when it is in the fully closed position. All of the wind-resistant hooks F are located within a limited, fixed height range compared to the opening height, and multiple wind-resistant hooks F are included in the same field of view, allowing for easy visual inspection of the status of the wind-resistant hooks F.

[E-2] Storage state and operation state of wind-resistant hook Figure 21 is a cross-sectional view of the widthwise end of the shutter device in the fully closed opening state, showing the state in which the longitudinal end of the slat 10 to which the wind-resistant hook F is attached is received within the guide rail, and the wind-resistant hook F has a first part (inner part) located within the guide rail and a second part (outer part) located outside the guide rail.

In Figure 21(A), the wind-resistant hook F is in an inactive state and the claw portion 4 is in a retracted position. The claw portion 4 is located within the thickness of the slat 10, and the hook receiver 16 has a projected dimension that prevents it from protruding from the guide groove 35 into the slat end receiving space toward the bottom wall 32 of the guide rail 3. This prevents the slat 10 or wind-resistant hook F from interfering with the hook receiver 16 and hindering the shutter opening and closing operation when the shutter curtain 1 is raised or lowered. In Figure 21(A), the operation plate 7 is in the first position. By sliding the operation plate 7 from the first position to the second position, the operation state shown in Figure 21(B) is reached, in which the second mating receiver 79 of the operation plate 7 and the mating protrusion 140 of the lock spring 14 are mated, locking the operation state.

In Figure 21 (B), the wind-resistant hook F is in an activated state, and the claw portion 4 is in a locked position. The front portion 40 of the claw portion 4 extends obliquely in a plan view from the longitudinal edge 103 of the slat 10 toward the bottom wall 32 and the first side wall 30, and the locking piece 42 formed in a folded shape at the tip of the front portion 40 is close to or in contact with the inner surface of the first edge 160 of the hook receiver 16. The locking piece 42 is positioned rearward of the inner surface of the second edge 161 of the hook receiver 16.

Figure 22 is a cross-sectional view of the widthwise end of the shutter device in the fully closed state, showing the state in which the longitudinal end of the slat 10 with the wind-resistant hook F attached is received within the guide rail, and the state in which the slat 10 is biased toward the bottom side of the guide rail 3.

In Figure 22 (A), the wind-resistant hook F is in an inoperative state and the claw portion 4 is in the retracted position. The claw portion 4 is located within the thickness of the slat 10, and the hook receiver 16 has a projected dimension that prevents it from protruding from the guide groove 35 into the slat end receiving space toward the bottom wall 32 of the guide rail 3. This prevents the slat 10 or wind-resistant hook F from interfering with the hook receiver 16 and hindering the shutter opening and closing operation when the shutter curtain 1 is raised or lowered. The protruding piece 83 at the tip of the bottom portion 80 of the bottom plate 8 of the wind-resistant hook F abuts against the inner surface of the bottom wall 32 of the guide rail 3, and the claw portion 4 in the retracted position is spaced a predetermined distance from the inner surface of the bottom wall 32 of the guide rail 3, ensuring space for the claw portion 4 to protrude.

In Figure 22 (A), the operation plate 7 is in the first position. When the operation plate 7 is slid from the first position to the second position from the state in Figure 22 (A), the claw portion 4 attempts to slide in conjunction with the movement of the operation plate 7 in the first direction. However, when the claw portion 4 protrudes a predetermined distance, the end portion of the claw portion 4 (the corner formed by the front portion 40 and the locking piece 42) abuts against the inner surface of the bottom wall 32 of the guide rail 3. As the operation plate 7 continues to slide in the first direction, the claw portion 4 moves relative to the operation plate 7 as if being pushed into the inside of the case (when the operation plate 7 moves in the first direction, the intermediate plate 5 does not move and the first coil spring 12 extends). When the operation plate 7 moves to the second position, the second fitting receiving portion 79 of the operation plate 7 and the fitting protrusion 140 of the lock spring 14 enter an engaged state, locking the operation state.

In Figure 22 (B), the wind-resistant hook F is in the activated state (the second fitting receiving portion 79 of the operation plate 7 and the fitting protrusion 140 of the lock spring 14 are in a fitted state), but the claw portion 4 is in the stored position. The claw portion 4 is biased in the direction of rotation to the locked position. The internal state of the wind-resistant hook F is similar to that shown in Figure 16.

In the state shown in Figure 22(B), when the slat 10 is released from its misalignment, the protrusion 83 at the tip of the intermediate plate 5 moves away from the inner surface of the bottom wall 32 of the guide rail 3, and the claw portion 4 rotates to the locked position, resulting in the state shown in Figure 22(C). The state shown in Figure 22(C) is the same as the state shown in Figure 21(B), in which the front portion 40 of the claw portion 4 extends obliquely in plan view from the longitudinal edge 103 of the slat 10 toward the bottom wall 32 and first side wall 30, and the locking piece 42 formed in a folded shape at the tip of the front portion 40 is close to or in contact with the inner surface of the first edge 160 of the hook receiver 16. The locking piece 42 is positioned rearward of the inner surface of the second edge 161 of the hook receiver 16. Furthermore, in the state shown in Figure 22 (C), when the slat 10 leans toward the bottom wall 32 of the guide rail 3, the claw 4, which is in the locked position, hits the bottom wall 32 and is pushed into the case. However, when the claw 4 is pushed in slightly, the protrusion 83 abuts against the bottom wall 32 of the guide rail 3, restricting the pushing of the claw 4. This prevents the claw 4 from being pushed further into the case, which would cause the operating plate 7 to be unlocked from the second position.

23 shows the behavior of the longitudinal ends of the slats 10 and the wind-resistant hooks F when wind pressure (surface pressure) acts on the shutter curtain 1 in the states of FIG. 21 (B) and FIG. 22 (C). The upper figure shows the case where the wind pressure acting on the shutter curtain 1 is positive, and the shutter curtain 1 bulges toward the indoor side, causing the longitudinal ends of the slats 10 to assume an inclined position in a plan view, with the claws 4 engaging with the corners of the first edge 160 and the second edge 161. The surface side portion of the slat 10 abuts the front portion 33 of the first side wall 30 of the guide rail 3. The lower figure shows the case where the wind pressure acting on the shutter curtain 1 is negative, causing the shutter curtain 1 to bulge toward the outdoor side, causing the longitudinal ends of the slats 10 to assume an inclined position in a plan view, with the claws 4 engaging with the corners of the first edge 160 and the second edge 161. The rear surface of the slat 10 abuts against the front surface 34 of the second side wall 31 of the guide rail 3. The claw 4 in this embodiment is rotatable, so it can engage with the interlocking portion (hook receiver 16) at an appropriate rotation angle depending on the orientation of the wind-resistant hook F relative to the interlocking portion. This is one of the advantages over conventional fixed wind-resistant hooks. In fact, in the configuration shown in the lower figure, the claw 4 is more securely engaged with the interlocking portion when rotated relative to the orientation shown in the upper figure (closer to the orientation shown in Figure 16).

[E-3] Curtain Opening Restriction Means: As described above, this embodiment includes a means for visually confirming whether the wind-resistant hooks F are activated or deactivated when the opening is fully closed. By displaying the status of the wind-resistant hooks F, the shutter curtain 1 is prevented from opening if the wind-resistant hooks F are activated (when the first display G is displayed). However, it is possible that the shutter curtain 1 may be opened by overlooking the fact that one or more wind-resistant hooks F are activated (the claws 4 are in the locked position). In this case, the claws 4 may hit the underside 232 of the upper guide 23 at the top end of the guide rail 3 with force, potentially damaging the claws 4 or the upper guide 23. Even if the design of the upper guide 23 were modified, the claws 4 in the locked position may interfere with the shutter curtain 1 when it is wound onto the winding body 2, causing irregular winding or generating abnormal noise.

The hook receiver 16 according to this embodiment has an L-shape in plan view or cross section, formed by a first edge 160 extending in the forward direction of the guide rail 3 and a second edge 161 extending in the forward direction of the guide rail 3. The first edge 160 and the second edge 161 form a latching portion that can latch onto the claw portion 4 in the latching position. The hook receiver 16 is fixed at a height corresponding to the height of each wind-resistant hook F when the opening is fully closed. In this embodiment, one hook receiver 16 is provided corresponding to each wind-resistant hook F, and as shown in FIG. 1, four hook receivers 16 are provided on each side. The hook receiver 16 is an elongated member with a predetermined height, which in this embodiment is taller than the height of the slat 10. It is also possible for one hook receiver 16 to correspond to multiple wind-resistant hooks spaced apart in the vertical direction.

An upper surface 162 is formed at the upper end of each hook receiver 16. When the wind-resistant hook F is in an inoperative state (the claw portion 4 is in the retracted position), the upper surface 162 does not interfere with the raising and lowering of the shutter curtain 1, but when the wind-resistant hook F is in an operative state, it is positioned above the claw portion 4 in the locked position and forms an abutment portion against which the claw portion 4 can abut. When the shutter curtain 1 is raised while the wind-resistant hook F is in an operative state, the claw portion 4 in the locked position abuts the upper surface 162 from below, restricting the rise of the shutter curtain 1.

Therefore, if an attempt is made to raise the shutter curtain 1 by mistake when one or more wind-resistant hooks F are in an activated state (claw portion 4 is in the locked position), the claw portion 4 in the locked position will rise and abut against the upper surface 162, restricting further upward movement of the shutter curtain 1. Regarding the accuracy of the installation position of the hook receiver 16 corresponding to the height of the wind-resistant hook F of the shutter curtain 1 when the opening is fully closed, it is sufficient that the locked portion (first edge 160 and second edge 161) of the hook receiver 16 corresponds to the height of the claw portion 4 of the wind-resistant hook F. Furthermore, since the height position of the abutting portion (upper surface 162) is allowed to be spaced above the claw portion 4 of the wind-resistant hook F when it is in the locked position, there is no need to install the hook receiver 16 in a precise position relative to the guide rail 3, improving installation efficiency. In this embodiment, the abutment portion (upper surface 162) is located above and spaced apart from the claw portion 4 in the locked position, and restricts further lifting once the shutter curtain 1 has risen slightly (when there is a gap between the floor surface F and the seat plate 11). In the case of an electric shutter, the lifting of the shutter curtain can be stopped by detecting the load. Alternatively, a sensor that detects the claw portion 4 in the locked position may be provided to detect the operating state of the wind-resistant hook F.

[E-4] Wind-Resistant Structure of Shutter As shown in Figures 2 and 24, the shutter curtain 1 is configured vertically in the height direction and is composed of four sections 1A-1D from bottom to top, each of which includes multiple slats. When the opening is fully closed, the shutter curtain 1 comprises an opening blocking section 1' corresponding to the entire height of the building opening, and an upper section 1D located above the building opening. The opening blocking section 1' comprises an upper section 1C located below the upper section 1D, a lower section 1A with a base panel 11 at its lower end, and an intermediate section 1B between the upper section 1C and the lower section 1A. At least one slat 10 of the upper section 1D of the shutter curtain 1 faces an inner lintel 21 and an outer lintel 22 extending widthwise above the building opening, and both widthwise ends of the opening blocking section 1' are located inside the guide rail 3.

Wind-resistant hooks F are provided at both longitudinal ends of one or more of the multiple slats 10 in the intermediate region 1B. The wind-resistant hooks F are located on the back side of the shutter curtain 1 when the opening is fully closed. In this embodiment, wind-resistant hooks F are provided at both longitudinal ends of four slats 10. The number of wind-resistant hooks F is not limited to the illustrated embodiment; for example, two to six wind-resistant hooks F are provided at each of both widthwise ends of the shutter curtain 1. In one embodiment, wind-resistant hooks F are provided at both widthwise ends of the 15th, 18th, 22nd, and 25th slats 10 from the bottom. In other words, multiple wind-resistant hooks F are provided every two or three slats. The intermediate region 1B is composed of the 14th to 26th slats from the bottom. In the opening blocking portion 1' of the shutter curtain 1, the slats 10 located above and below the middle portion 1B do not have wind-resistant hooks, and multiple wind-resistant hooks F are concentrated in the middle portion 1B of the opening blocking portion 1'.

The lower section 1A is made up of multiple slats 10 including a base plate 11, and in a manual shutter, a locking device 19 is provided on the slats 10 in the lower section 1A. In one embodiment, the lower section 1A is made up of the 13th slat 10 from the bottom of the base plate, and the locking device 19 is provided on the 13th slat 10 from the bottom. When the locking device 19 is provided at a predetermined height on the shutter curtain 1 when the opening is fully closed, all wind-resistant hooks F are provided above the locking device 19.

Let the height dimension of the lower portion 1A of the opening blocking portion 1' of the shutter curtain 1 be H1, the height dimension of the middle portion 1B be H2, and the height dimension of the upper portion 1C be H3, and H1 ≧ H2. In one embodiment, the height dimension H1 of the lower portion 1A remains constant even when the opening height changes. The height dimension H2 of the middle portion 1B is H2 ≦ H1, and as the opening height increases, the height dimension H3 of the upper portion 1C increases. Regardless of the opening height at the site, by keeping the position of the lowest slat 10 to which the wind-resistant hooks F are attached constant from the bottom edge of the opening, the installation workability of the wind-resistant hooks F and hook receivers 16 is improved. Furthermore, because all wind-resistant hooks F are located in the middle portion 1B of the opening blocking portion 1', the workability of switching the wind-resistant hooks F between the inactive and active states is good.

The shutter curtain 1 is prepared in sections at the factory, packaged in sections, and transported to the site for assembly. In this embodiment, the slats 10 directly above the base plate 11 through the slats 10 directly below the slat 10 equipped with the locking device 19 are defined as the first set S1, the multiple slats 10 that essentially correspond to the middle section 1B are defined as the second set S2, and the slats 10 that essentially correspond to the upper section 1C and upper section 1D are defined as the third set. One or more packaging sets are prepared for each of the first set S1, second set S2, and third set S3. All slats 10 equipped with wind-resistant hooks F are included in the second set S2. The base plate 11 and slats 10 equipped with the locking device 19 are prepared separately from the packaging sets. These packaging configurations are merely examples; for example, the first set S1 and second set S2 may be packaged together.

A hook receiver 16 is provided inside the guide rail 3, positioned at a height corresponding to the height position of the wind-resistant hook of the shutter curtain 1 when the opening is in the fully closed position. When the wind-resistant hook F is in an inoperative state, the claw portion 4 of the wind-resistant hook F is in the stored position and is spaced apart from the hook receiver 16, so it does not affect the raising and lowering operation of the shutter curtain 1.

When the opening is fully closed, the operating plate 7 is slid from the first position to the second position as necessary to change the wind-resistant hook F from its inactive state to its active state, and the claw portion 4 is placed in the locked position. The installation method for the wind-resistant structure according to this embodiment comprises the steps of lowering the shutter curtain 1, with the wind-resistant hook F in its inactive state, to fully close the building opening, and sliding the operating plate 7 of the wind-resistant hook F in the first direction when the opening is fully closed to place the wind-resistant hook F in its active state. The claw portion 4 of the wind-resistant hook F in the active state is in the locked position and can be engaged with the hook receivers 16 inside the guide rail 3. By setting the wind-resistant hooks F to the active state when the opening is fully closed, if surface pressure acts on the shutter curtain 1, the multiple wind-resistant hooks in the middle of the height direction will engage with the hook receivers 16 to withstand the surface pressure.

When the opening is fully closed, the shutter curtain 1 in a vertical position consists of a lower section 1A, a middle section 1B, an upper section 1C, and an upper section 1D. The lower section 1A is equipped with a base plate 11 that is more rigid than the slats 10, and wind-resistant hooks F are provided at both widthwise ends of the multiple slats 10 in the middle section 1B. One or more slats 10 located at the upper end of the upper section 1C and/or one or more slats 10 located at the lower end of the upper section 1D face the inner lintel 21 and outer lintel 22.

When wind pressure of a predetermined magnitude or greater acts on the shutter curtain 1 when the opening is fully closed, multiple wind-resistant hooks F at both widthwise ends of the middle section 1B of the opening closure section 1' engage with hook receivers 16 in the left and right guide rails 3 to resist the wind pressure (Figures 23 and 25).

At the lower end of the opening when it is fully closed, both widthwise ends of the seat panel 11 at the lower end of the lower part 1A of the opening closure part 1' abut against the guide rail 3 from the inside, resisting wind pressure (Figure 26). The seat panel 11 has greater mechanical strength than the slats 10 and is less likely to deform than the slats 10. Both longitudinal ends abut against the front parts 33 and 34 of the guide rail 3, preventing it from slipping out of the guide rail 3.

At the upper end of the opening when it is fully closed, one or more slats 10 located at the lower end of the upper section 1D and/or the widthwise central portions of one or more slats 10 located at the upper end of the upper section 1C abut against the inner lintel 21 to resist wind pressure (Figure 27). In this embodiment, the strength of the outer lintel 22 is less than that of the inner lintel 21, but the main body W is located adjacent to the outer lintel 22, and when surface pressure acts in a direction that inflates the shutter curtain 1 toward the interior, one or more slats 10 located at the lower end of the upper section 1D and/or the widthwise central portions of one or more slats 10 located at the upper end of the upper section 1C abut against the main body W to resist wind pressure.

In this embodiment, when wind pressure of a predetermined magnitude or greater acts on the shutter curtain 1 when the opening is fully closed, the wind-resistant hooks F provided at both widthwise ends of the intermediate portion 1B of the opening blocking portion 1' engage with hook receivers (engaged portions) 16 in the guide rail 3, the widthwise central portion of the slat 10 located at the upper end of the opening blocking portion 1' abuts against the structure (lintels 21, 22 and main body), and both widthwise ends of the seat panel 11 abut against the guide rail 3 from the inside, thereby opposing the wind pressure. As the opening height and width increase, the surface pressure acting on the opening blocking portion 1' also increases, but by gradually increasing the strength of the seat panel 11 and/or lintels 21, 22 as the opening height and width increase, it is possible to withstand the surface pressure without increasing the number of wind-resistant hooks F.

[Appendix 1]
A shutter curtain made up of multiple slats connected in the height direction;
Left and right guide rails located at both widthwise ends of the building opening and extending to the entire height of the building opening;
Wind-resistant hooks are provided at both ends of the length direction of some of the slats of the shutter curtain;
Equipped with
The wind-resistant hook is a movable wind-resistant hook having a claw portion that is movable between a locking position and a storage position,
A locking portion is provided in the guide rail at a height corresponding to the height position of the wind-resistant hook.
shutter.

In one aspect, an abutment portion is provided in the guide rail and positioned above the locked portion,
When the claw portion is in the locking position, the abutted portion is located above the claw portion.
In one embodiment, the contacted portion is integrally formed with the locked portion.
In one embodiment, a hook receiver having the locked portion and the abutted portion is provided inside the guide rail.
In one aspect, when the opening is fully closed, the claw portion in the locking position locks onto the locked portion, thereby providing a wind-resistant structure that prevents the slat end from slipping out of the guide rail.
A method for installing a wind-resistant structure using shutters, comprising:
We provide shutter curtains with wind-resistant hooks at both ends of the slats.
The guide rails located at both ends of the building opening in the width direction are provided with latching portions corresponding to the height positions of the wind-resistant hooks,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state where the claw portion is in an engaging position and in an inoperable state where the claw portion is in a stored position,
The wind-resistant hook is deactivated, and the shutter curtain closes the building opening.
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an activated state, and the claw portion is brought into an engaging position so that the claw portion can be engaged with the engaged portion.
How to install a wind-resistant structure using shutters.

[Appendix 2]
A shutter curtain made up of multiple slats connected in the height direction and equipped with a seat plate at the bottom end;
Left and right guide rails located at both widthwise ends of the building opening and extending to the entire height of the building opening;
In a shutter equipped with
The shutter curtain comprises an opening closing portion corresponding to the entire height of the building opening when the opening is fully closed, and an upper portion located above the building opening,
At least one slat in the upper portion and/or at least one slat at the upper end portion of the opening closing portion faces a structure extending in the width direction of the building opening above the building opening,
Both widthwise ends of the opening closing portion are located within the guide rail,
One or more slats located at the height center of the opening blocking portion are provided with wind-resistant hooks at both ends in the length direction,
A locking portion is provided in the guide rail at a height corresponding to the height position of the wind-resistant hook,
When a wind pressure of a predetermined magnitude or greater acts on the shutter curtain with the opening fully closed, the central portion of the width direction of the at least one slat abuts against the structure, both ends of the width direction of the seat plate abut against the guide rails from the inside, and the one or more wind-resistant hooks are engaged with the engaged portion.
Wind-resistant shutter structure.

In one aspect, the opening closing portion comprises an upper portion consisting of a plurality of slats, a lower portion consisting of a plurality of slats and a lower end seat plate, and an intermediate portion between the upper portion and the lower portion,
The intermediate portion is made up of a plurality of slats, and one or more of the plurality of slats are provided with wind-resistant hooks at both ends in the longitudinal direction.
In one embodiment, the height dimension of the lower section is equal to or greater than the height dimension of the intermediate section.
In one embodiment, the plurality of wind-resistant hooks are provided for every third or every third slat.
In one embodiment, the plurality of wind-resistant hooks are provided at two to six positions on each of both widthwise ends of the shutter curtain.
In one embodiment, the structure is a lintel.
In one embodiment, the structure is a wall or a building frame.
In one embodiment, the wind-resistant hook is a movable wind-resistant hook having a claw portion that is movable between an engaging position and a storage position.
In one embodiment, a locking device is provided, and the wind-resistant hook is provided on the upper side of the locking device.
A method for installing a wind-resistant structure using shutters, comprising:
We provide shutter curtains with wind-resistant hooks at both ends of the slats.
The shutter curtain comprises an opening closing portion corresponding to the entire height of the building opening when the opening is fully closed, and an upper portion located above the building opening,
The opening closing portion comprises an upper portion, a lower portion having a seat plate, and an intermediate portion between the upper portion and the lower portion, and one or more slats in the intermediate portion are provided with wind-resistant hooks at both ends in the longitudinal direction thereof;
The guide rails located at both ends of the building opening in the width direction are provided with latching portions corresponding to the height positions of the wind-resistant hooks,
The wind-resistant hook is a movable wind-resistant hook that can be in an operating state where the claw portion is in an engaging position and in an inoperable state where the claw portion is in a stored position,
The wind-resistant hook is deactivated, and the shutter curtain closes the building opening.
When the opening is fully closed, both longitudinal ends of the seat plate are positioned within the guide rails, and the lower end of the upper portion and/or the upper end of the upper portion face a structure positioned above the building opening,
When the opening is in a fully closed state, the wind-resistant hook is changed from a non-operated state to an activated state, and the claw portion is brought into an engaging position so that the claw portion can be engaged with the engaged portion.
How to install a wind-resistant structure using shutters.

[Appendix 3]
an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation unit is in the first position, the claw unit is in a stored position,
In conjunction with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position.
A wind-resistant hook,
When the claw is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw is in the locking position, the wind-resistant hook is in an operative state;
A locking means is provided to maintain the wind-resistant hook in an operating state.
Movable wind-resistant hook.

In one embodiment, the locking means is a holding means for holding the operating portion in the second position.
In one aspect, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operating portion and the portion of the case, and a fitting receiving portion is provided on the other;
When the operating portion is in the second position, the fitting protrusion is in a fitted state with the fitting receiving portion,
The mated state can be released by sliding the operating portion with a predetermined force.
In one aspect, when the fitting protrusion and the fitting receiving portion are in a fitted state (the windproof hook is in an activated state), the claw portion in the locking position is biased by a spring material in a direction to maintain the locking position,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the locked position, to the stored position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.
In one aspect, an intermediate member is provided which is connected to the operation unit via a spring member and slides in conjunction with the sliding movement of the operation unit,
The claw portion is movable between a storage position and a locking position in conjunction with the sliding movement of the intermediate member,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion, which is in the locked position, to the stored position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.

In one aspect, the locking means for maintaining the operating state of the wind-resistant hook is a first locking means,
Furthermore, a second locking means is provided to keep the wind-resistant hook in an inoperative state.
In one embodiment, the second locking means is a holding means for holding the operating portion in the first position.
In one aspect, the wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operating portion and the portion of the case, and a first fitting receiving portion and a second fitting receiving portion are provided on the other;
When the operating portion is in a first position, the fitting protrusion is in a fitted state with the first fitting receiving portion,
When the operation portion is in the second position, the fitting protrusion is in a fitted state with the second fitting receiving portion,
The mated state can be released by sliding the operating portion with a predetermined force.
Equipped with the above-mentioned movable wind-resistant hook,
The guide rails located at both ends of the building opening in the width direction are provided with latching portions corresponding to the height positions of the wind-resistant hooks,
A shutter with a wind-resistant structure that prevents the slat ends from slipping out of the guide rails when the opening is fully closed by engaging the claw portions in an engaging position with the engaged portions.

[Appendix 4]
an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation unit is in the first position, the claw unit is in a stored position,
In conjunction with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position.
A wind-resistant hook,
When the claw portion is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw portion is in the locking position, the wind-resistant hook is in an operative state.
Equipped with a visual confirmation means that can distinguish the operating state or non-operating state of the wind-resistant hook,
Movable wind-resistant hook.

In one embodiment, the wind-resistant hook comprises a case,
the operating unit or an element that slides in conjunction with the sliding movement of the operating unit includes a portion that faces the inner surface of the face portion of the case,
In the portion, a first indicator showing a non-operated state and a second indicator showing an operated state are arranged side by side in the sliding direction,
A visual inspection opening is formed on the surface of the case,
When the operating unit is in the first position, the first display unit is positioned in the visual confirmation opening and exposed, and when the operating unit is in the second position, the second display unit is positioned in the visual confirmation opening and exposed.
In one embodiment, the first display portion and the second display portion are distinguished by color.
In one embodiment, the first display portion and the second display portion are identified by letters and/or symbols.
In one aspect, the wind-resistant hook has a portion located within the guide rail and a portion located outside the guide rail, and the visual inspection opening is formed in the portion located outside the guide rail.
In one embodiment, the wind-resistant hooks are positioned and attached to the back surface of the shutter curtain, so that the state of the wind-resistant hooks can be visually observed from inside the house.
In one aspect, multiple wind-resistant hooks are provided at both ends of the length of the slats in a limited area in the height direction midway up the height direction of the opening occluding portion of the shutter curtain when the opening is fully closed, making visual inspection easier than when wind-resistant hooks are provided across the entire height.
Equipped with the above-mentioned movable wind-resistant hook,
A locking portion is provided in the guide rail at a height corresponding to the height position of the wind-resistant hook,
A shutter with a wind-resistant structure that prevents the slat ends from slipping out of the guide rails when the opening is fully closed by engaging the claw portions in an engaging position with the engaged portions.

[Appendix 5]
The wind-resistant hooks provided at the longitudinal ends of the slats have claws that are movable between a storage position and a locking position,
The locking portion at the tip of the claw in the locking position can be locked to the locked portion provided inside the guide rail,
When the claw portion is in the storage position, the claw portion is in a first position where the locking portion is positioned at the same level as or inside the slat edge,
When the claw portion is in the locking position, the claw portion is in a second position in which the locking portion protrudes outward from the slat edge,
The slats are provided at their longitudinal ends with protrusions that protrude beyond the slat edges,
When the claw portion is in the first position, the tip of the protrusion is located closer to the bottom of the guide rail than the locking portion.
Movable wind-resistant hook.

In one aspect, when the slat is biased toward the bottom of the guide rail, the claw portion in the storage position is kept spaced apart from the bottom of the guide rail, ensuring space for the claw portion to protrude.
In one embodiment, the wind-resistant hook has a case, and the protrusion is part of the case.
In one aspect, when the claw portion is in the second position, at least a portion of the engaging portion is positioned approximately at the same position as the tip of the convex portion or closer to the bottom of the guide rail than the tip of the convex portion.
In one embodiment, the tip of the convex portion is curved.
In one aspect,
an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
In conjunction with the operation portion moving from the first position to the second position, the claw portion changes from a storage position to a locking position,
When the operation unit moves to the second position, the second position is maintained,
When the slat is biased toward the bottom of the guide rail, the convex portion abuts against the bottom of the guide rail, thereby securing a space for the claw portion to protrude toward the bottom, thereby allowing the operation unit to move to the second position,
When the operation unit moves to the second position with the claw portion in contact with the bottom portion, the claw portion is biased in a direction to assume a locking posture,
When the offset is eliminated and the protrusion is separated from the bottom, the claw portion is brought into the locking position by the biasing force.

[Appendix 6]
an operating unit that is slidable between a first position and a second position;
an intermediate member connected to the operation unit via a first spring member and sliding in conjunction with the sliding movement of the operation unit;
a pressing member connected to the intermediate member via a second spring member and sliding in conjunction with the sliding movement of the intermediate member;
a claw portion that is movable between a storage position and a locking position in conjunction with the sliding movement of the operation portion;
Equipped with
a base end portion of the claw portion is loosely fitted into a tip end portion of the intermediate member, and the claw portion moves from a storage position to a locking position in conjunction with the sliding movement of the operation portion from the first position to the second position,
The tip of the compression member abuts against a base end portion of the claw portion and presses the base end portion toward the tip side.
Movable wind-resistant hook.

In one aspect, when the operating portion is in the first position, the biasing force of the first spring material is equal to or greater than the biasing force of the second spring material (the biasing force is the same as or greater than the biasing force of the second spring material), and when the operating portion slides from the first position to the second position, the operating portion, the intermediate member, and the compression member slide integrally toward the tip side. In one aspect, the base end portion of the claw portion includes a first portion (hanging piece 43), a second portion (rising piece 44), and a third portion (base end portion 41' of the rear portion),
a first portion and/or a third portion of a base end portion of the claw portion is engaged with a tip end portion of the intermediate member, and the claw portion moves from a storage position to a locking position in conjunction with the sliding movement of the operation portion from the first position to the second position,
The tip of the compression member abuts against a second portion of the base end side portion of the claw portion and presses the second portion toward the tip side.
In one aspect, the tip side portion of the intermediate member includes a first rising piece on a side closer to the tip and a second rising piece on a side farther from the tip, and a recessed groove is formed by the first rising piece and the second rising piece,
a first portion of a base end portion of the claw portion is received in the recessed groove with play;
When the operating portion is in the first position, the first portion and/or the third portion of the base end side portion of the claw portion is engaged with the first rising piece.
In one aspect, when the operation unit is in the first position, a base end portion of the claw portion is in an inclined position in which a second portion is located closer to a tip end than a first portion,
When the operating portion is in the second position, the base end portion of the claw portion has a first portion and a second portion that are in a vertical position along the second rising piece, and the third portion is in a horizontal position.

In one aspect, when the operation portion is in the first position, an abutment portion is provided at a distance from the tip end side of the second portion of the base end side portion of the claw portion,
When the operating portion moves from the first position to the second position, the operating portion, the intermediate member, and the pressing member slide integrally toward the distal end side until the second portion abuts against the abutted portion, and the claw portion slides toward the distal end side;
With the second portion in contact with the abutted portion, the operating portion and the intermediate member slide toward the tip while stretching the second spring material, causing the first portion and/or the third portion of the claw portion to be pressed against the tip side portion (first raised piece and/or second raised piece), causing the claw portion to rotate around the abutted portion as a fulcrum and assume a locking position.
In one aspect, a device includes a case,
An opening is formed on the front end side of the face portion of the case, and the opening has a first edge portion on the side farther from the front end and a second edge portion on the side closer to the front end,
a second portion of the base end portion of the claw portion is located within the opening,
When the operating portion is in the first position, the second portion of the base end portion is located on the first edge portion side, and the second edge portion serves as the abutted portion.
In one aspect, the surface of the operating part faces the rear portion of the surface of the intermediate member, a first spring material is positioned in the space between the surface of the operating part and the rear portion of the surface of the intermediate member, and an opening or groove that receives a portion of the first spring material is formed in one or both of the surface of the operating part and the rear portion of the surface of the intermediate member.
In one aspect, the surface of the compression member faces the front portion of the surface of the intermediate member, a second spring material is positioned in the space between the surface of the compression member and the front portion of the surface of the intermediate member, and an opening or groove is formed in one or both of the surface of the compression member and the front portion of the surface of the intermediate member to receive a portion of the second spring material.

[Appendix 7]
an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
a claw actuation mechanism that moves the claw from a storage position to a locking position in conjunction with movement of the operation unit from the first position to the second position;
Equipped with
The claw actuation mechanism includes a first actuation mechanism that slides the claw from the storage position toward the tip end, and a second actuation mechanism that rotates the claw that has slid toward the tip end to place it in the locking position.
Movable wind-resistant hook.

In one aspect, a base end portion of the claw portion is loosely fitted into a tip end portion of the operation portion,
When the operation portion is in the first position, an abutment portion is provided on a tip side of a base end portion of the claw portion at a distance therefrom,
When the operation unit moves from the first position to the second position, the first actuation mechanism operates until the base end portion abuts the abutted portion, and the tip end portion slides toward the tip end, whereby the claw portion is pushed by the tip end portion and slides toward the tip end,
The second operating mechanism is activated after the base end portion abuts the abutted portion when the operating part moves from the first position to the second position, and when the base end portion abuts the abutted portion, the tip end portion slides toward the tip side while the base end portion is abutting the abutted portion, causing the base end portion of the claw portion to be pushed by the tip end portion, and the claw portion rotates around the abutted portion as a fulcrum to assume a locking position.
In one aspect, the tip side portion includes a first raised piece on a side closer to the tip and a second raised piece on a side farther from the tip, and a recessed groove is formed by the first raised piece and the second raised piece,
The base end portion of the claw portion includes a first portion, a second portion, and a third portion,
a first portion of a base end portion of the claw portion is received in the recessed groove with play;
When the operating portion is in the first position, a first portion and/or a third portion of a base end portion of the claw portion is engaged with the first rising piece,
When the operation portion is in the first position, the abutment portion is provided at a distance from a tip end side of a second portion of a base end side portion of the claw portion,
the first actuation mechanism causes the second portion to slide until it abuts against the abutted portion;
The second operating mechanism is activated after the second part comes into contact with the abutted part, and when the tip part slides toward the tip side while the second part is in contact with the abutted part, the first part and/or the third part of the claw part is pushed by the tip part (first raised piece and/or second raised piece), and the claw part rotates around the abutted part as a fulcrum to assume an engaging position.
In one aspect, a device includes a case,
An opening is formed on the front end side of the face portion of the case, and the opening has a first edge portion on the side farther from the front end and a second edge portion on the side closer to the front end,
a second portion of the base end portion of the claw portion is located within the opening,
When the operating portion is in the first position, the second portion of the base end portion is located on the first edge portion side, and the second edge portion serves as the abutted portion.
In one aspect, when the operation unit is in the first position, a base end portion of the claw portion is in an inclined position in which the second portion is located closer to a tip end than the first portion,
When the first actuation mechanism is actuated, the claw portion slides toward the distal end side while maintaining the inclined posture of the proximal end portion,
When the second actuation mechanism is actuated, the base end portion of the claw portion, which is in the inclined position, assumes a vertical position in which the first portion and the second portion are aligned with the second rising piece.
In one aspect, an intermediate member is provided that slides in conjunction with the sliding movement of the operation unit,
The tip side portion is the tip side portion of the intermediate member.
In one aspect, a pressing member is provided that slides in conjunction with the sliding movement of the intermediate member,
The tip of the compression member abuts against a second portion of the base end side portion of the claw portion.
In one aspect, an intermediate member is connected to the operation unit via a first spring member and slides in conjunction with the sliding movement of the operation unit;
a pressing member connected to the intermediate member via a second spring member and sliding in conjunction with the sliding movement of the intermediate member;
When the first operating mechanism is initially actuated, the biasing force of the first spring material is equal to or greater than the biasing force of the second spring material (the biasing force is the same as or greater than the biasing force of the second spring material), and when the first operating mechanism is actuated, the operating portion, the intermediate member, and the compression member slide integrally toward the tip side,
When the second actuation mechanism is actuated, the operating portion and the intermediate member slide integrally toward the tip end side, and the second spring material expands, thereby increasing the biasing force of the second spring.

1 shutter curtain 1' opening blocking portion 1A lower portion 1B middle portion 1C upper portion 1D upper portion 10 slat 103 longitudinal end edge of slat (slat end edge)
11 seat plate 21 inner lintel 22 outer lintel 3 guide rail 31 first side wall 32 second side wall 32 bottom wall (bottom)
4 Claw portion 40 Front portion 41 Rear portion 41′ Base end portion of the rear portion (base end portion of the claw portion, third portion)
42 Locking piece (locking portion)
43 Hanging piece (proximal part of the claw part, first part)
44 Rising piece (base end side portion of claw portion, second portion)
5. Intermediate plate (intermediate member)
50 Surface part 51 Wide part (tip side part)
52 rising piece (first rising piece, tip side portion)
53 rising piece (second rising piece, tip side portion)
58 Concave groove (tip side part)
6 Compression plate (compression member)
60 Surface part 61 Contact part 7 Operation plate (operation part)
70 Surface portion 78 First fitting receiving portion (second locking means, holding means)
79 Second fitting receiving portion (first locking means, holding means)
730 Protrusion (stopper)
8. Bottom plate (case)
83 Projection (protrusion)
9 Cover plate (case)
90 Upper surface part 91 Hanging wall (immovable part)
94 Opening 940 First edge 941 Second edge (abutted part)
95 Opening (visual inspection opening, visual inspection means)
12 First coil spring (first spring material)
13 Second coil spring (second spring material)
14 Lock spring (locking means, holding means)
15 Mounting plate 16 Hook receiver 160 First side (engaged portion)
161 Second side (engaged portion)
162 Top surface (abutted part)
F Wind-resistant hook W Body G First display R Second display

Claims (11)

an operating unit that is slidable between a first position and a second position;
a claw portion movable between a locking position and a storage position;
Equipped with
When the operation unit is in the first position, the claw unit is in a stored position,
In conjunction with the movement of the operation portion from the first position to the second position, the claw portion rotates from the storage position to the locking position.
A wind-resistant hook,
When the claw portion is in the storage position, the wind-resistant hook is in an inoperative state, and when the claw portion is in the locking position, the wind-resistant hook is in an operative state.
The wind-resistant hook is provided with a locking means for maintaining its operating state .
When the wind-resistant hook is in an activated state, the claw portion in the locked position is biased by the spring material in a direction to maintain the locked position, so that the claw portion can rotate while maintaining the locked position, and the force acting to move the claw portion in the locked position to the stored position is absorbed by the spring material, so that the locking means maintains the activated state of the wind-resistant hook.
Movable wind-resistant hook. The locking means is
a holding means for holding the operating unit in the second position;
The movable wind-resistant hook according to claim 1 . The wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operating portion and the portion of the case, and a fitting receiving portion is provided on the other;
When the operating portion is in the second position, the fitting protrusion is in a fitted state with the fitting receiving portion,
The fitted state can be released by sliding the operation unit with a predetermined force.
A movable wind-resistant hook according to any one of claims 1 and 2. When the fitting protrusion and the fitting receiving portion are in a fitted state, the claw portion in the locking position is biased by a spring material in a direction to maintain the locking position,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion from the locking position to the storage position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.
The movable wind-resistant hook according to claim 3 . an intermediate member connected to the operation unit via a spring member and sliding in conjunction with the sliding movement of the operation unit;
The claw portion is movable between a storage position and a locking position in conjunction with the sliding movement of the intermediate member,
When the wind-resistant hook is in an activated state, the force acting to move the claw portion from the locking position to the storage position is absorbed by the spring material, thereby maintaining the mating state between the mating protrusion and the mating receiving portion.
The movable wind-resistant hook according to any one of claims 3 and 4 . The locking means for maintaining the operating state of the wind-resistant hook is a first locking means,
Further, a second locking means is provided to keep the wind-resistant hook in an inoperative state.
The movable wind-resistant hook according to any one of claims 1 to 5 . The second locking means is
a holding means for holding the operating unit in a state where it is in the first position;
The movable wind-resistant hook according to claim 6 . The wind-resistant hook includes a case, and the case has a portion facing a side edge of the operating portion,
a fitting protrusion is provided on one of the side edge of the operation portion and the portion of the case, and a first fitting receiving portion and a second fitting receiving portion are provided on the other;
When the operating portion is in a first position, the fitting protrusion is in a fitted state with the first fitting receiving portion,
When the operation portion is in the second position, the fitting protrusion is in a fitted state with the second fitting receiving portion,
The fitted state can be released by sliding the operation unit with a predetermined force.
The movable wind-resistant hook according to any one of claims 6 and 7 . The operating part is provided with a stopper that abuts on a fixed part of the wind-resistant hook when the operating part moves to the second position.
The movable wind-resistant hook according to any one of claims 1 to 8 . The stationary part is a case of a wind-resistant hook.
The movable wind-resistant hook according to claim 9 . A wind-resistant hook according to any one of claims 1 to 10 is provided,
The guide rails located at both ends of the building opening in the width direction are provided with latching portions corresponding to the height positions of the wind-resistant hooks,
A shutter with a wind-resistant structure that prevents the slat ends from slipping out of the guide rails when the opening is fully closed by engaging the claw portions in an engaging position with the engaged portions.