JP4833807B2 - Guide rail structure of seat shutter - Google Patents

Description

The present invention relates to a guide rail structure for a seat shutter in which the end of the seat is detached from the guide rail when a predetermined load or more is applied to the seat. Specifically, the shutter curtain end separated from the guide rail is connected to the guide rail. The present invention relates to a guide rail structure having a function of automatically returning inside.

A sheet shutter opens and closes a building opening by a sheet-like shutter curtain. A sheet-like shutter curtain is weaker than a steel shutter curtain or the like, and there is a possibility that the sheet or sometimes the guide rail may be damaged when a force higher than the wind resistance is applied to the shutter curtain. Therefore, a sheet shutter has been proposed in which the end of the shutter curtain comes out of the guide rail when a predetermined load or more is applied to the shutter curtain.

Such a sheet shutter requires a means for returning the end portion of the shutter curtain that has slipped out of the guide rail into the guide rail. Patent Document 1 (paragraph number 0015, FIG. 3) describes an automatic return means (guide) for an end portion of the shutter curtain detached from the guide rail. A similar configuration is shown in FIG. A guide G is provided above the upper guide 50 at the upper end of the guide rail 5, and when the guide block 40 comes out of the guide rail 5, the guide G is guided by the shutter curtain opening operation (raising). The block 40 is guided into the guide G, and at the time of the next shutter curtain closing operation, the guide block 40 is guided into the guide rail 5 to return to the original state.

However, when an extremely strong gust of wind blows or a forklift strikes the shutter curtain and the shutter curtain is disengaged above the guide, the end of the shutter curtain released by the shutter curtain opening operation is not guided to the guide. For this reason, even if the shutter curtain that has been lifted and opened is lowered, the shutter curtain end portion is lowered and does not automatically return. The conventional automatic return mechanism is not limited to the above-described example, and the shutter curtain end that has been released only when the shutter curtain is raised is guided to the guide, so depending on the state when the guide rail end is removed. In the series of operations of raising (opening) and lowering (closing) the shutter curtain, the end of the shutter curtain that is surely detached does not always return automatically.
JP 2006-9450 A

The present invention relates to a sheet shutter having means capable of automatically returning the detached shutter curtain end portion into the guide rail when a load exceeding a predetermined value acts on the shutter curtain and the end portion of the shutter curtain comes out of the guide rail. The purpose of this is to improve the reliability of automatic return.

The technical means adopted by the present invention in order to achieve such a problem is that a pair of guide rails erected at the opening of the building, a sheet-like shutter curtain, and a space in the vertical direction at both ends in the width direction of the shutter curtain. A plurality of guide blocks, and when a load greater than a predetermined value acts on the shutter curtain, the guide block is separated from the guide rail. A lower opening-shaped guide portion that guides the guide block detached from the guide rail into the guide rail, and an upper opening-shaped guide portion that guides the guide block detached from the guide rail into the guide rail when the shutter curtain is lowered. It is a guide rail structure of a seat shutter provided. Preferably, the internal space of the upper opening guide portion is formed to expand upward, and the internal space of the lower opening guide portion is formed to expand downward. In one aspect, the internal space of the upper opening-shaped guide portion is expanded upward in the width direction of the opening (the direction protruding into the opening) and in the front-rear direction of the opening, and the lower opening shape The inner space of the guide portion is expanded downward in the width direction of the opening (the direction protruding into the opening) and in the front-rear direction of the opening.

In one embodiment, the upper opening-shaped guide portion is located above the lower opening-shaped guide portion. In another aspect, the upper opening guide portion is positioned below the lower opening guide portion. In one preferable aspect, the upper opening guide portion is connected to an upper end of a guide rail, and the lower opening guide portion is provided below the upper opening guide portion. is there. That is, the lower opening-shaped guide part is provided in the middle part of the guide rail. The separation distance between the upper opening guide portion and the lower opening guide portion is not particularly limited, but in the embodiment described later, the lower opening guide portion is provided at an upper portion of the guide rail. The separation distance between the upper opening guide portion and the lower opening guide portion is relatively small.

In one aspect, each guide rail is provided with an auxiliary guide portion having an upper opening just below the guide portion having the lower opening. The opening area of the auxiliary guide portion is smaller than the opening area of the lower opening guide portion, and the shutter is released from between the outer surface of the auxiliary guide portion and the lower opening guide portion when the shutter curtain is raised. The curtain end portion can be guided and guided to the internal space of the lower opening guide portion.

In one aspect, the guide rail is swingable in the front-rear direction of the opening, and the front guide (the upper opening guide, the lower opening guide, the upper opening auxiliary guide) is It can swing in the front-rear direction of the opening as an integral part of the guide rail.

In the present invention, when the guide block at the end of the shutter curtain is detached from the guide rail, the detached guide block can be used as an upper opening guide or a lower opening guide in both the raising and lowering operations of the shutter curtain. Can be automatically guided back into the guide rail, so even if the shutter curtain end that has been released by either the raising or lowering of the shutter curtain does not return into the guide rail Then, the shutter curtain end portion detached by the subsequent reverse operation can be automatically returned into the guide rail, and the reliability of the automatic return of the detached shutter curtain end portion is improved.

In the case where the upper opening guide portion is connected to the upper end of the guide rail and the lower opening guide portion is located below the upper opening guide portion, the shutter curtain is lifted to release the guide rail. Even if there is a shutter curtain end that is guided back into the guide rail from the lower opening-shaped guide portion and does not return to the guide rail when the shutter curtain is lifted, the shutter curtain is opened from the fully opened state. By lowering the guide rail, the end portion of the guide rail that has not been returned is guided and guided into the guide rail from the guide portion having the upper opening shape, and returns to the guide rail.

When each guide rail is provided with an auxiliary guide part with an upper opening just below the guide part with a lower opening, when the shutter curtain is lowered, the edge of the shutter curtain is removed from the inner space of the lower opening guide part. It can be guided to the guide rail well. Further, when guiding the guide rail end separated from the lower opening-shaped guide portion by raising the shutter curtain into the guide rail, the outer surface of the auxiliary guide portion can function as a guide surface for guiding the shutter curtain end portion. .

When the guide rail and the guide part are integrally swingable in the front-rear direction of the opening, the guide block removed from the guide rail is guided and guided smoothly into the internal space of the guide part without being caught by the guide part. The

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall schematic front view of a sheet shutter (showing a fully opened state), FIG. 2 is a view of FIG. 1 viewed from the side, and FIG. 3 is a front view and a cross-section showing the main part of the sheet shutter. FIG. 4 is a plan view of the front view of FIG. 3 viewed from the side. The seat shutter includes a guide rail assembly 1 erected on the left and right sides of the building opening, a shutter case 2 provided at the upper end of the opening, and a winding shaft 3 extending in the opening width direction in the shutter case 2. The shutter curtain 4 is connected to the winding shaft 3.

The left and right ends of the shutter curtain 4 are received in the guide grooves of the guide rail 5 of the guide rail assembly 1, and the shutter curtain 4 is guided to the guide grooves by the opening and closing drive by the opening / closing machine. While being raised and lowered, it is configured to be wound around the take-up shaft 3 or to be fed out from the take-up shaft 3.

A plurality of guide blocks 40 are provided at an end in the width direction of the shutter curtain 4 with an interval in the vertical direction. A bag-like portion 41 is formed at the lower end portion of the shutter curtain 4 by folding and welding the lower end of the sheet to the lower end of the shutter curtain 4. As shown in FIG. 5, bottom weights 42 are provided at both ends in the width direction of the bag-like portion 41. The bag-like portion 41 is provided with a urethane pipe 43 positioned between the left and right bottom weights 42. The shape and configuration of the guide block 40 are not limited to those shown in the drawings, and for example, the guide block may be configured from guide rollers.

The structure of the guide rail assembly 1 will be described. As shown in FIG. 6, the guide rail assembly 1 includes a guide rail 5, a guide rail fixing member 6, and a guide rail support member 7. The bottom side of the guide rail 5 is attached to the guide rail fixing member 6, and the bottom side of the guide rail fixing member 6 is attached to the guide rail support member 7. The prospective wall 70 of the guide rail support member 7 is formed with a substantially U-shaped frame in sectional view, and a sealing material 71 is provided on the frame. The guide rail 5 has elasticity, and when a predetermined force or more is applied, the groove portion can be expanded. The prospective wall 70 of the guide rail support member 7 is formed with receiving holes in the vertical direction so that the guide rail fixing member 6 fixed to the bottom side of the guide rail 5 is spaced in the vertical direction. The guide rail 5 (guide rail fixing member 6) is supported by the receiving hole in a state having play through a plurality of rods (bolts 100 to be described later) protruding in the direction of the opening width (FIG. 6 is movable in the front-rear direction (Y direction in FIG. 6) of the opening, and is movable following the movement of the shutter curtain 4. Here, when the guide rail 5 is movable in the opening width direction and is swingable in the front-rear direction of the opening, an example will be described. When the shutter curtain 4 swells by acting, the guide rail 5 is pulled in the direction in which the shutter curtain 4 swells through the guide block 40, and the bolt 100 passes through the receiving hole of the expectation wall 70 of the guide rail support member 7. When the force protruding from the state of FIG. 6 in the oblique direction (arrow A) and the force acting on the guide rail 5 is released, the protruded bolt 100 is returned to the state of FIG. Hereinafter, each component of the guide rail assembly 1 will be described in detail.

The guide rail 5 is a long material extending in the vertical direction, and as shown in FIG. 6, the opposing side walls 5a, 5b and one end side of the side walls 5a, 5b are extended to face each other. A front wall 5d having a groove 5c extending to the rear wall, a rear wall 5e formed by connecting the other end sides of the side walls 5a and 5b, and an engaging protrusion 5f protruding from the rear wall 5e. In the guide rail 5, the internal space surrounded by the inner surfaces of the walls 5a, 5b, 5d, and 5e has a substantially rectangular shape in cross-sectional view, and the guide block 40 is guided in the vertical direction by the internal space. The guide rail 5 is formed of an elastic member, for example, a resin. When a predetermined force or more is applied, the guide rail 5 is deformed, the groove 5c is expanded, and a guide block at the end of the shutter curtain 4 is formed. 40 comes out of the guide rail 5.

As shown in FIGS. 3 and 4, the upper end of the guide rail 5 is provided with an upper opening-shaped first guide portion 8 for automatic return of the detached shutter curtain end portion. The cross-sectional shape and dimensions of the lower end of the internal space of the first guide portion 8 are the same as the cross-sectional shape and dimensions of the internal space of the guide rail 5, and the internal space of the first guide 8 is the guide rail 5 (upper guide rail). 51).

The outer shape and the internal space of the first guide portion 8 are gradually extended upward. As shown in FIG. 7, the first guide portion 8 includes a front wall 80 formed with a groove portion through which the sheet end portion is inserted, and side walls 81 and 82 facing the opening portion in the front-rear direction. The internal space of the first guide portion 8 is defined by the inner surfaces of the front wall 80 and the side walls 81 and 82. The inner surfaces of the opposing side walls 81 and 82 are gradually expanded upward. The inner surface of the front wall 80 extends in an inclined manner in a direction protruding upward from the opening. In other words, the internal space of the first guide portion 8 is expanded upward in the width direction of the opening (the direction projecting into the opening) and in the front-rear direction of the opening, and is released from the guide rail 5. The guide block 40 at the end of the curtain is received from the opening at the upper end. The guide block 40 at the end of the shutter curtain separated from the guide rail 5 is guided and guided to the internal space of the first guide portion 8 by the lowering of the shutter curtain 4 and returns to the upper guide rail 51. FIG. 3 shows a state in which the opening is fully opened. In this embodiment, the height position of the first guide 8 is such that when the opening is fully open, the two lowest guide blocks 40 at the end of the shutter curtain are first. The guide block 40 in the guide portion 8 and above it is provided at a position above the opening at the upper end of the first guide portion 8. Further, when the two lowermost guide blocks 40 at the end of the shutter curtain are separated from the guide rail 5, the shutter curtain 4 is placed so that the two guide blocks 40 are below the second guide portion 9 described later. By lowering and raising the shutter curtain 4, the two separated guide blocks 40 are automatically returned into the guide rail 5 via the second guide portion 9.

The guide rail 5 is provided below the first guide 8 and is provided with a second guide portion 9 having a lower opening shape for automatic return of the shutter curtain end portion. Accordingly, the second guide portion 9 is formed at a midway position in the height direction of the guide rail 5. More specifically, as shown in FIG. 7, the guide rail 5 has two parts, that is, an upper guide rail 51 and a lower guide rail 52. In the illustrated embodiment, the guide rail 5 has a height direction. The guide rail 5 is divided into an upper guide rail 51 and a lower guide rail 52. A first guide 8 is provided at the upper end of the upper guide rail 51, and a second guide portion 9 is provided at the lower end of the upper guide rail 51. The cross-sectional shape and dimensions of the upper end of the internal space of the second guide portion 9 are the same as the cross-sectional shape and dimensions of the internal space of the guide rail 5 (upper guide rail 51), and the internal space of the second guide 9 is the guide It communicates with the internal space of the rail 5 (upper guide rail 51).

The outer shape and the internal space of the second guide portion 9 extend in a gradually expanding manner downward. The second guide portion 9 includes a front wall 90 in which a groove portion through which the sheet end portion is inserted is formed, and side walls 91 and 92 facing the opening portion in the front-rear direction. The internal space of the second guide portion 9 is defined by the inner surfaces of the front wall 90 and the side walls 91 and 92. The inner surfaces of the opposing side walls 91 and 92 are gradually extended downward. The inner surface of the front wall 90 extends in a gradually inclined manner in a direction protruding downward from the opening. The lower part of the front wall 90 is cut out in a triangular shape, and an opening 90A is formed in the lower part of the groove. That is, the internal space of the second guide portion 9 is expanded downward in the width direction of the opening (direction protruding into the opening) and in the front-rear direction of the opening, and is released from the guide rail 5. The guide block 40 at the end of the curtain is received from the opening at the lower end. The guide block 40 at the end of the shutter curtain separated from the guide rail 5 is guided and guided to the inner space of the second guide portion 9 by the ascent of the shutter curtain 4 and returns to the upper guide rail 51.

An upper opening-shaped third guide portion 10 is provided directly below the second guide portion 9. The third guide portion 10 does not directly return the guide block 40 at the end of the detached shutter curtain, but is a so-called auxiliary guide portion. The third guide portion 10 is provided at the upper end of the lower guide rail 52. The cross-sectional shape / dimension of the lower end of the internal space of the third guide portion 10 matches the cross-sectional shape / dimension of the internal space of the guide rail 5 (lower guide rail 52), and the internal space of the third guide 10 is It communicates with the internal space of the guide rail 5 (lower guide rail 52).

The outer shape and the internal space of the third guide portion 10 are gradually expanded upward. As shown in FIG. 7, the third guide portion 10 includes a front wall 100 formed with a groove portion through which the sheet end portion is inserted, and side walls 101 and 102 facing the opening portion in the front-rear direction. The outer shape / internal space of the third guide portion 10 is defined by the outer surface / inner surface of the front wall 100 and the side walls 101, 102. The outer and inner surfaces of the opposing side walls 101 and 102 are gradually expanded upward. The outer surface and the inner surface of the front wall 100 are gradually inclined in a direction protruding upward from the opening. In other words, the outer shape and the internal space of the third guide part 100 are expanded upward in the width direction of the opening (the direction protruding into the opening) and the front-rear direction of the opening. The opening area at the upper end of the third guide portion 10 is set smaller than the opening area at the lower end of the second guide portion 9. Specifically, the expansion angle of the side walls 101 and 102 of the third guide part 10 is smaller than the expansion angle of the side walls 91 and 92 of the second guide part 9, and the side walls 101 and 102 of the third guide part 10. The distance between the upper ends is smaller than the distance between the lower ends of the side walls 91 and 92 of the second guide portion 9. The amount of protrusion of the third guide portion 10 into the opening at the upper end of the front wall 100 is smaller than the amount of protrusion of the second guide portion 9 into the opening at the upper end of the front wall 90. The height position of the opening at the upper end of the third guide portion 10 is substantially the same as the height position of the opening at the lower end of the second guide portion 9. In the illustrated embodiment, the upper end of the third guide portion 10 is 2 Slightly protrudes into the opening at the lower end of the guide portion 9.

When the shutter curtain 4 is lowered, the third guide part 10 guides and guides the guide block 40 guided downward through the internal space of the second guide part 9 into the lower guide rail 52. Yes. When the shutter curtain 4 is raised, the guide block 40 at the end of the shutter curtain separated from the guide rail 5 is guided and guided from the opening at the lower end of the second guide portion 9 to the internal space of the second guide portion 9. The outer surfaces of the side walls 101 and 102 of the third guide portion 10 function as guide surfaces.

The guide rail fixing member 6 is a long material extending in the vertical direction. The guide rail fixing member 6 receives the engaging protrusion 5f on the bottom side of the guide rail 5 on one end side and the bolt 100 constituting the spring assembly 10 on the other end side. Accepts the head on one end side.

The guide rail support member 7 is a long material extending in the vertical direction, and a receiving hole through which the bolt 100 of the spring assembly 10 is inserted is formed in the expected wall 70 of the guide rail support member 7. A guide rail fixing member 6 on which the bottom side of the guide rail 5 is mounted and a guide rail support member 7 are connected via a hole and spring assembly 10.

The spring assembly 10 includes a bolt 100, a head portion 101 provided on one end side of the bolt 100, a nut 102 provided on the other end side of the bolt 100, and a spring 103 provided on the bolt 100. The head portion 101 of the bolt 100 penetrating the prospecting wall 70 is received in the receiving hole of the guide rail fixing member 6. The bolt 100 is inserted into the receiving hole of the prospecting wall 70 with play. The diameter of the receiving hole is set larger than the outer diameter of the bolt 100 and has some margin, and is set smaller than the outer diameter of the spring 103. In the illustrated embodiment, a coil spring is illustrated, but an elastic member such as rubber may be used.

The configuration of the guide rail 5 that is movable in the opening width direction and swingable in the front-rear direction of the opening is not limited to the illustrated configuration. In the illustrated example, the guide rail 5 swings around the receiving hole of the prospective wall 70 of the guide rail support member 7 as a fulcrum P. However, the guide rail swings around the bottom side as a fulcrum. For example, the guide rail may be swung using another configuration. Moreover, being able to swing freely in the front-rear direction of the opening is not limited to swinging in the horizontal direction, and may include swinging upward or diagonally downward. For example, by providing play in the vertical direction in the receiving hole through which the bolt is inserted, the guide rail can be swung obliquely upward or obliquely downward within the range of the play.

In the thus configured sheet shutter, when the shutter is opened and closed, the guide blocks 40 provided at both the left and right ends of the shutter curtain 4 are guided by the groove portions of the guide rail 5 so that the shutter curtain 4 moves in the vertical direction. . When surface pressure acts on the shutter curtain 4 when the opening is fully closed, the guide blocks 40 provided at the left and right ends of the shutter curtain 4 come into contact with the front wall 5d of the guide rail 5 to counter the surface pressure. ing.

The guide rail 5 (the first guide 8, the second guide 9, and the third guide 10) can move in the opening width direction via the spring assembly 10, and can swing in the front-rear direction of the opening. . Therefore, when the shutter curtain 4 is bent due to wind or the like, the guide rail 5 is movable following the movement of the shutter curtain 4. As a result, even when the shutter curtain 4 is bent, the guide block 40 can be prevented from coming off with a uniform force by coming into contact with the front wall 5d of the guide rail 5 as a whole.

When a strong wind acts on the shutter curtain 4 or an object collides with it, the guide rail 5 is formed of a resin having elasticity, so that the groove 5c is expanded and the end of the shutter curtain 4 is expanded. The guide block 40 comes out of the groove 5c. Therefore, the shutter curtain 4 or the guide rail 5 is not broken.

When the guide blocks 40 at both ends of the shutter curtain 4 are separated from the guide rail 5, the detached guide blocks 40 are lifted by the lift of the shutter curtain 4 by the opening / closing device.
It is guided and guided from the lower opening of the second guide portion 9 to the internal space of the second guide portion 9, and the guide block 40 ascends through the internal space of the second guide 9 to guide the guide rail 5 (upper guide rail 51. ) Automatically returns. Even if a part of the guide block 40 at the end of the detached shutter curtain cannot be returned into the guide rail 5 when the shutter curtain 4 is raised, the shutter curtain 4 is still detached by lowering the shutter curtain 4 from the fully opened state. The guide block 40 is guided and guided from the upper opening of the first guide portion 8 to the internal space of the first guide portion 8, and the guide block 40 descends through the internal space of the first guide 8 to guide rails. 5 (upper guide rail 51) automatically returns.

The present invention can be used for a sheet shutter.

1 is an overall schematic front view of a sheet shutter (showing a fully opened state). It is the figure which looked at FIG. 1 from the side. It is the front view and transverse cross section which showed the principal part of the sheet shutter. It is the figure which looked at the front view of FIG. 3 from the side. (A) is a partial top view of a shutter curtain, (b) is the partial front view. It is sectional drawing of a guide rail assembly. It is action | operation explanatory drawing of the guide body which concerns on this invention. It is operation | movement explanatory drawing of the conventional guide body.

Explanation of symbols

1 guide rail assembly 5 guide rail 6 guide rail fixing member 7 guide rail support member 8 first guide 9 second guide 10 third guide 4 shutter curtain 40 guide block

Claims (4)

A shutter having a pair of guide rails erected at the opening of the building, a sheet-like shutter curtain, and a plurality of guide blocks provided at both ends in the vertical direction at both ends in the width direction of the shutter curtain In the seat shutter where the guide block is detached from the guide rail when a predetermined load or more is applied to the curtain,
Each guide rail has
A lower opening-shaped guide portion that guides the guide block separated from the guide rail into the guide rail when the shutter curtain rises;
An upper opening-shaped guide portion that guides the guide block detached from the guide rail into the guide rail when the shutter curtain is lowered;
A guide rail structure for seat shutters.   The upper opening guide portion is provided at an upper end of a guide rail, and the lower opening guide portion is provided below the upper opening guide portion. Guide rail structure.   Each guide rail has an upper opening-shaped auxiliary guide portion directly below the lower opening-shaped guide portion, and the opening area of the auxiliary guide portion is larger than the opening area of the lower opening-shaped guide portion. The guide rail structure according to claim 1, which is small. The guide rail according to any one of claims 1 to 3, wherein the guide rail is swingable in a front-rear direction of the opening, and the guide part is swingable in the front-rear direction of the opening integrally with the guide rail. Construction.

Images