JP3315482B2 - Blind shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind shutter provided at an opening of a building such as a window or an entrance, and more particularly to a blind shutter provided with a mechanism for simultaneously changing the opening and closing angles of slats.

[0002]

2. Description of the Related Art Blind shutters are generally extended downward from the upper part of an opening of a building to close the opening, and are stored above the opening to open the opening. The slats are provided with driving means for extending the slats downward and storing the slats upward, and the slats are connected to each other by a link mechanism so that adjacent slats can be folded. The blind shutter is provided with a slat swinging device that adjusts lighting, ventilation, and the like by changing the opening and closing angle of the slat.

[0003] Conventionally, this type of rocking device includes an engaging member that engages with all the slats that are fed out to the opening and a movement of the engaging member, as is known, for example, in Japanese Utility Model Publication No. 1-37085. And a driving means for driving the engaging member.The driving means swings each slat through the engaging member and the guiding member to adjust the opening / closing angle of the slat. ing.

[0004]

However, in such a conventional structure, the structure on the slat side becomes complicated because the engaging members are engaged with all the slats fed out to the opening, and the slat guide and the like are used. However, the structure on the opening side becomes complicated, the number of parts and the number of assembling steps increase, and there is a problem that cost cannot be reduced. The present invention has been devised in view of the above circumstances, and an object of the present invention is to simplify the structure, reduce the number of parts and the number of assembly steps,
An object of the present invention is to provide a blind shutter capable of reducing costs.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a vertical posture in which a guide groove formed along a vertical frame of an opening of a building is engaged with both ends thereof. The adjacent slats are foldably connected at both ends thereof, and at least one slat has at least one slat in a direction substantially perpendicular to the vertical posture of the slat on the end side surface. The vertical arm has a tilt arm attached thereto, and a pair of cam devices are attached to the vertical frame with the guide groove interposed therebetween, with the vertical movement of the slat in a vertical position. When the tilt arm is engaged with the pair of cam devices, the slat to which the tilt arm is attached swings in the opening and closing directions with the attachment point to the tilt arm as a fulcrum, and at the same time, the of Rats swings the opening and closing direction in unison to follow, the slats by engagement between the tilt arm and the cam device is released is characterized in that it is configured to return to the vertical position.

In the above structure, a pair of cam devices mounted in the vertical frame with the guide groove interposed therebetween include a first cam and a second cam, and the first cam is formed from the upper portion to the intermediate portion of the vertical frame. A first cam surface that extends downward while being inclined toward the guide groove side and a second that is continuous with a lower end of the first cam surface via a bent portion and that extends downward while being inclined away from the guide groove. It has a cam surface. The second cam is continuous with a first cam surface extending downward in parallel with the guide groove through a curved portion from a lower end of the first cam surface, and extends substantially horizontally in a direction away from the guide groove. An existing second cam surface. Further, projecting arms extending in opposite directions are integrally formed at the ends of the tilt arms which are attached to the side surfaces of the ends of the slats so as to extend in a direction substantially perpendicular to the vertical posture of the slats. A roller is rotatably attached to the tip of the protruding arm. Further, as means for connecting adjacent slats so as to be foldable, a bendable member such as a link mechanism, a string, a rope, and a ball chain is used.

[0007]

The slats which are foldably connected are vertically guided in a vertical posture while engaging both ends of the slats with guide grooves formed in a vertical frame of the building opening. As the slat moves in the vertical direction, the tilt arm attached to the slat engages with a pair of cam devices attached to the vertical frame with the guide groove interposed therebetween. The slat to which the arm is attached swings in the opening and closing direction with the attachment point to the tilt arm as a fulcrum, and at the same time, the other slats connected to the slat follow the swing simultaneously in the opening and closing direction. Then, when the engagement between the tilt arm and the cam device is released, the slat returns to the vertical position.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following embodiment, an example in which a link mechanism is used as a means for connecting each slat so as to be able to be folded will be described. FIG. 1 is a side view of a blind shutter according to the present invention, FIG. 2 is a side view showing a slat in a vertical posture at a lower edge of a building opening, and FIG. 3 is substantially horizontal at an upper end of the opening. FIG. 4 is a side view showing a slat, FIG. 4 is a plan view showing a positional relationship between an end of the slat, a vertical frame of an opening, and a guide groove formed along the vertical frame, and FIG. FIG. 7 is a plan view showing a positional relationship between a tilt arm attached to a portion, a vertical frame of an opening, and a guide groove formed along the vertical frame. Reference numeral 1 denotes a blind type shutter. The blind type shutter 1 is provided with a slat storage portion 5 provided above an opening portion 3 composed of a vertical frame and a horizontal frame. 1 and a plurality of slats 11 that are housed in the housing 5 and open the opening 3, and drive means 9 that feeds the slats 11 downward and stores the slats 11 in the housing 5. , A indicates the inside of a building, and B indicates the outside.

As shown in FIG. 4, pins 21 and 23 are fixed to the slats 11 at both ends in the width direction of the slats 11 at both ends in the longitudinal direction of the plurality of slats 11, respectively. A guide roller 27 is rotatably attached to the end of the pin 23 on the end side so as to protrude from the holder 25, and the slat 11 mounts the guide roller 27 in the vertical frame of the opening 3. Guide groove 47 formed along the frame
The slats 11 adjacent to each other at both ends in the longitudinal direction are guided while being engaged with the link mechanism 1.
3 foldably connected. The link mechanism 13 includes a first set of 15 links for connecting the widthwise intermediate portions of the adjacent slats 11 and a second set of 17 links for connecting the widthwise ends of the slats. .

The base ends of two first links 15a ₁ and 15b ₁ are pivotally connected to an intermediate pin 21 protruding from a holder 25 fixed to each of the slats 11. That is, as shown in FIG. 3, the two first links 15a ₁ , 15b ₁ pivotally connected to the pins 21 on the intermediate portion side, whose base ends protrude from the holder 25 fixed to the slat 11, respectively.
The other end of one of the first links 15a ₁ is a holder 2 fixed to the slat 11 located above the slat 11.
5 is rotatably connected by a pin 29 to the first link 15b ₂ and the other end of the other set which is rotatably pivoted at its proximal end to a pin 21 of projecting from an intermediate portion, the first other other set the other end of the link 15b ₁ is pivotally mounted rotatably at its proximal end to an intermediate portion of the pin 21 projecting from the holder 25 fixed to slat 11 which is located below the slats 11 It is coupled rotatably by the first link 15a and the other end to a pin 29 of the _third.

[0011] Incidentally, in the slats 11 and the slats 11 first and one set connecting the links 15a ₁ and the other set of the first link 15b ₂ which is positioned below that is located above adjacent slat located below At the upper end of the first link 15a ₁ pivotally connected to the
Link 15a ₁ and the other of the first link 15b ₂ between pairs can be bent only in the outward direction, the first link 15b ₂ which is pivotally connected to the slats 11 positioned above so as to prevent the bent inwardly
A stopper 1501 which is engaged with the side of the link and disables inward bending of both links is integrally formed.

A second pin 23 on the end side protruding from a holder 25 fixed to each slat 11 cooperates with the first set of links 15 to open and close each slat 11.
The proximal ends of the 17 sets of links are pivotally mounted. That is, FIG.
As shown in FIG. 2, one of the second links 17a ₁ and 17b ₁ pivotally connected to end pins 23 protruding from a holder 25 whose base end is fixed to the slat 11, respectively.
Other set the other end of the link 17a ₁ is pivotally mounted rotatably at its proximal end to the slat 11 end of the pin 23 projecting from the holder 25 fixed to slat 11 which is located above the It is rotatably connected by a second link pin 31 to the other end of the 17b ₂ of the slat 1 and the second end of the link 17b ₁ of the other which is located below the slats 11
Rotatably connected by a pin 31 to rotatably pivotally mounted another set of the second end of the link 17a ₃ at its proximal end to a pin 23 of projecting from end side anchored holder 25 to 1 Have been.

[0013] Incidentally, in the slats 11 and the slats 11 and the second link of one set connecting the 17a ₁ and the other set of the second link 17b ₂ which is positioned below that is located above adjacent slat situated above the second lower end of the link 17b ₂ which is pivotally connected to 11, the one set at pin 31 second
Link 17a ₁ and the other set the second link 17b ₂ each other is able to bend only in the outward direction, the first link 17a ₁ which is pivotally connected to the slats 11 positioned below so as to prevent the bent inwardly
A stopper 1701 that engages with the side of the link and disables inward bending of both links is integrally formed.

A pin 23 at an end protruding from a holder 25 fixed to each of the slats 11 has an end beyond a guide roller 27 rotatably pivoted to the pin 23,
The base end of a pair of support links 18 is pivotally connected in the same positional relationship as the second set of links 17 so as to move the slats 11 upward or downward. The support link 18 moves up and down each slat 11, and other ball chains can be used.

The storage section 5 includes a storage box 33 protruding to the outside B side of the building, and the driving means 9 is disposed on the opening 3 in the storage box 33. The driving means 9 includes a motor 35, a sprocket 37, a chain 39 connecting the motor 35 and the sprocket 37, and the like. The driving of the motor 35 causes the sprocket 37 to rotate forward and backward. The sprocket 37 has a concave portion 370 in which the guide roller 27 is engaged with a disk-shaped outer peripheral portion.
1 is formed at intervals in the circumferential direction. The forward and reverse rotation of the sprocket 37 causes the slat 11 to be extended and wound up through the engagement between the recess 3701 and the guide roller 27.

The slat 11 is extended and the slat 11
In the state slightly before the state in which the opening 3 is completely closed, that is, as shown in FIG. 1, in the state where the lowermost slat 11 approaches the lower edge 301 of the opening 3, The tilt arm 51 is attached to the located slat 11A. As shown in FIG. 5, the tilt arm 51 extends in a direction substantially perpendicular to the vertical posture of the slat 11A, and a pin 23 on which the second link 17 is pivotally mounted at a middle portion in the longitudinal direction. It is fixed to.
A projecting arm extending in the opposite direction is integrally formed at an end of the tilt arm 51, and a first roller 53 and a second roller 55 are rotatably pivotally attached to the tip of the projecting arm. I have. When the tilt arm 51 swings, the slat 1 on which the tilt arm 51 is attached is mounted.
1A swings in the opening and closing direction.

At the upper end of the vertical frame of the opening 3, a pair of cam devices 61 including an upper cam 63 and a lower cam 65 are attached with a guide groove 47 interposed therebetween. The upper cam 63
6A, as shown in FIG. 6A, engages with a first roller 53 pivotally attached to the tip of the projecting arm of the tilt arm 51, and is inclined downward toward the guide groove 47 from the upper part to the middle part. And a second cam surface 6305 which is continuous with a bent portion 6303 at a lower end of the first cam surface 6301 and which extends downward while being inclined in a direction away from the guide groove 47. ing. The lower cam 65
Are engaged with a second roller 55 pivotally attached to the tip of the projecting arm of the tilt arm 51. The first cam surface 6501 and the first cam surface 6 extend downward in parallel with the guide groove 47.
A second portion extending from the lower end of the first portion 501 with a curved portion 6503 and extending substantially horizontally in a direction away from the guide groove 47;
A cam surface 6505 is provided.

Next, the cam device 61 and the tilt arm 5
1 and the slat 11 due to the engagement of the two.
The movement (swing) of A will be described with reference to FIGS. In a state slightly before the opening 3 is almost completely closed by the slat 11, as shown in FIGS. 6 (A) and 6 (B), the slat 1
1A faces the upper cam 63, and the first roller 53 of the tilt arm 51 engages with the first cam surface 6301 of the upper cam 63. Then, with the downward movement of the slat 11A, the first roller 53 is guided along the first cam surface 6301,
As shown in FIGS. 6B to 7A, the slat 11
A starts swinging clockwise with the attachment point to the tilt arm 51 as a fulcrum, and gradually changes from a vertical posture to a horizontal posture. Further, with the downward movement of the slat 11A,
The first roller 53 is a bent portion 6 at the lower end of the first cam surface 6301.
At 303, the slat 11A further swings clockwise and changes to a nearly perfect horizontal position.

Further, when the slat 11A moves downward, the first roller 53 moves from the bent portion 6303 at the lower end of the first cam surface 6301 to the second cam surface 63 as shown in FIG.
05, the slat 11A moves while slightly swinging in the counterclockwise direction with the attachment point to the tilt arm 51 as a fulcrum. Then, the engagement of the first roller 53 with the second cam surface 6305 is released, the lower portion of the first cam surface 6501 of the second roller 55, the curved portion 6503, and the second cam surface 650.
5 (FIGS. 8A and 8B), the slat 11A swings counterclockwise by its own weight with the point of attachment to the tilt arm 51 as a fulcrum and assumes a vertical posture. It returns (FIG. 9), and the lower end of the slat 11 located at the lowest position contacts the lower edge of the opening 3 to close the opening 3. By a series of engagements of the tilt arm 51 and the cam device 61, the other slats 11 located below the slat 11A connected by the link mechanism to the slat 11A to which the tilt arm 51 is attached are connected to the slat 11A. Swings at once following the swing of

When the slat 11 is wound up and opened from the state where the opening 3 is closed by the slat 11, the second roller 55 of the tilt arm 51 first engages with the second cam surface 6505 of the lower cam 65. And slat 11
A swings clockwise from the vertical posture with the attachment point to the tilt arm 51 as a fulcrum. In addition, slat 11A
The upper roller moves the second roller 55 to the lower cam 65.
From the engagement with the second cam surface 6505 to the first cam surface 6501
To the third cam surface 6305 of the upper cam 63 of the first roller 53, and the slat 11A moves upward while swinging clockwise.

When the first roller 53 reaches the bent portion 6303 due to the upward movement of the slat 11A, the slat 11A changes to a substantially complete horizontal posture. Further, the upward movement of the slat 11A causes the first roller 53
Moves upward while engaging with the first cam surface 6301 of the upper cam 63, and the slat 11 </ b> A swings counterclockwise about the point of attachment to the tilt arm 51 as a fulcrum. When the engagement with the cam surface 6301 is released, the slat 11A swings counterclockwise around its attachment point with the tilt arm 51 by its own weight, returns to the vertical position, and is wound up. To release.

In the present embodiment, a tilt arm 51 attached to a slat 11A located above an opening is connected to adjacent slats 11 in such a manner that the slats 11 can be folded together and the opening is almost completely closed. The slat 11A is swung by being engaged with a pair of cam devices 61 provided across the guide groove of the opening vertical frame for guiding the slat in the vertical direction, and slatably connected to the slat 11A. The slats 11 located below the slats 11A are configured to swing simultaneously following the swing of the slats 11A. Therefore, by engaging the slats 11A with the cam device 61, the driving of the motor is stopped and the rotation of the sprocket is stopped in a state where each slat is swung, thereby maintaining the opening angle of each slat at a desired angle. Can be.

[0023]

As will be apparent from the above description, the present invention guides the vehicle in a vertical position while engaging both ends of the guide grooves formed in the vertical frame of the opening of the building along the vertical frame. A plurality of slats to be moved are foldably connected, and at least one slat is provided with a tilt arm extending in a direction substantially perpendicular to a vertical posture of the slat,
Attach a pair of cam devices sandwiching the guide groove in the vertical frame,
With the vertical movement of the slat in the vertical direction, the tilt arm and the cam device are engaged to swing the slat with the tilt arm attached thereto using the attachment point with the tilt arm as a fulcrum. At the same time, other slats connected to the slat are configured to follow and swing at the same time, and a simple structure with a single tilt arm and a cam device swings many slats at the same time. The number of parts and the number of assembly steps can be reduced, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a blind shutter according to the present invention.

FIG. 2 is a side view showing a slat in a vertical posture at a lower edge of an opening.

FIG. 3 is a side view showing a slat in a horizontal posture at an upper edge of an opening.

FIG. 4 is a plan view showing a positional relationship between an end of a slat, a vertical frame of an opening, and a guide groove formed along the vertical frame.

FIG. 5 is a plan view showing a positional relationship between an end of a slat, a tilt arm attached to the end, a vertical frame of an opening, and a guide groove formed along the vertical frame.

FIGS. 6A and 6B are side views illustrating an engagement state between a tilt arm and a cam device.

FIGS. 7A and 7B are side views illustrating an engagement state between a tilt arm and a cam device.

FIGS. 8A and 8B are side views illustrating an engagement state between a tilt arm and a cam device.

FIG. 9 is a side view illustrating an engagement state between the tilt arm and the cam device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blind shutter 3 Opening 11 Slat 51 Tilt arm 61 Cam device 63 Upper cam 65 Lower cam

Claims (3)

(57) [Claims] A plurality of slats guided and moved in a vertical posture while engaging both ends of a guide groove formed along the vertical frame in a vertical frame of an opening of a building, respectively. Both ends are foldably connected at both ends, and at least one slat has a tilt arm attached to a side surface of the end thereof, the tilt arm extending in a direction substantially orthogonal to the vertical posture of the slat. A pair of cam devices are mounted in the vertical frame with the guide groove interposed therebetween, and the tilt arm engages with the pair of cam devices as the slats move vertically in a vertical posture. Thereby, the slat to which the tilt arm is attached swings in the opening / closing direction with the attachment point to the tilt arm as a fulcrum, and at the same time, the other slats connected to the slat follow the swing simultaneously in the opening / closing direction. The chill The slats are configured to return to the vertical position by releasing the engagement between the toe arm and the cam device, and a pair of slats attached to the vertical frame with the guide groove interposed therebetween.
The cam device includes a first cam and a second cam.
Is inclined from the upper part to the middle part toward the guide groove side of the vertical frame.
A first cam surface extending downward and bent at a lower end of the first cam surface
Continuous through the part, inclined in the direction away from the guide groove
And a second cam surface extending downward.
A first cam surface extending downward in parallel with the guide groove;
The guide groove is continuous from the lower end of the first cam surface via the curved portion.
The second cam surface extending almost horizontally in the direction away from
Blind shutter, characterized in that it comprises. 2. A plurality of slats guided and moved in a vertical position while engaging both ends of guide grooves formed in the vertical frame of the opening of the building along the vertical frame. Both ends are foldably connected at both ends, and at least one slat has a tilt arm attached to a side surface of the end thereof, the tilt arm extending in a direction substantially orthogonal to the vertical posture of the slat. A pair of cam devices are mounted in the vertical frame with the guide groove interposed therebetween, and the tilt arm engages with the pair of cam devices as the slats move vertically in a vertical posture. Thereby, the slat to which the tilt arm is attached swings in the opening / closing direction with the attachment point to the tilt arm as a fulcrum, and at the same time, the other slats connected to the slat follow the swing simultaneously in the opening / closing direction. The chill The slat by engaging the Toamu and the cam device is released is configured to return to the vertical position, vertical position of the slat to the side surface of the slat
Tilt installed in a direction almost perpendicular to
At the ends of the arms, projecting arms extend in opposite directions
Is formed integrally, and the tip of the protruding arm is
A roller engaged with the cam device is rotatably mounted.
Blind shutter, characterized in that is. 3. A plurality of slats guided and moved in a vertical position while engaging both ends of guide grooves formed in the vertical frame of the opening of the building along the vertical frame, respectively. Both ends are foldably connected at both ends, and at least one slat has a tilt arm attached to a side surface of the end thereof, the tilt arm extending in a direction substantially orthogonal to the vertical posture of the slat. A pair of cam devices are mounted in the vertical frame with the guide groove interposed therebetween, and the tilt arm engages with the pair of cam devices as the slats move vertically in a vertical posture. Thereby, the slat to which the tilt arm is attached swings in the opening / closing direction with the attachment point to the tilt arm as a fulcrum, and at the same time, the other slats connected to the slat follow the swing simultaneously in the opening / closing direction. The chill The slats are configured to return to the vertical position by releasing the engagement between the toe arm and the cam device, and a pair of slats attached to the vertical frame with the guide groove interposed therebetween.
The cam device includes a first cam and a second cam.
Is inclined from the upper part to the middle part toward the guide groove side of the vertical frame.
A first cam surface extending downward and bent at a lower end of the first cam surface
Continuous through the part, inclined in the direction away from the guide groove
And a second cam surface extending downward.
A first cam surface extending downward in parallel with the guide groove;
The guide groove is continuous from the lower end of the first cam surface via the curved portion.
The second cam surface extending almost horizontally in the direction away from
Equipped, on the side of the end of the slat, in the vertical position of the slat
Tilters that extend and attach in a direction substantially perpendicular to the
Projecting arms that extend in opposite directions at the ends of the arms
Are formed integrally, and the front end of the protruding arm has a front end.
The roller that engages with the cam device is rotatably mounted.
Blind shutter, characterized in that there.