JPH0616075Y2 - Folding shutter - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Application Field) This invention relates to a shutter installed at a doorway of a house, a window, etc., and in particular, when the door is opened, the slat is folded up and stored in a foldable housing. It is about the shutter.

(Prior art) Conventionally, a large number of independent slats as one type of shutters are connected to each other by connecting members such as strings or wires to support them vertically in a number of steps, and the connecting members are installed in guide rails on both sides. In some cases, the slats can be raised and lowered by raising and lowering, the angles of the slats can be adjusted in the same phase, and when the slats are opened, the slats are stacked and folded above the shutter opening.

(Problems to be solved by the invention) In the shutter as described above, it is necessary to secure a storage space for folding the slats in a stacked state above the opening, and the uppermost edge of the storage space must be secured. The upper slat is rotatably supported and used as a suspension fulcrum when the shutter is fully closed. Therefore, since it is necessary to secure a folding space for the slats that can be raised and lowered only in the storage space, it is necessary to secure the storage space more than the folding space required for the slats that open and close the shutter opening. There was a problem that it had to be large.

Also, if the position of the uppermost slat is fixed and it is used as a suspension fulcrum that suspends and supports all the slats, if the position of the draining surface at the lower edge of the shutter does not match the lifting range of the slat, the slat is set to the lowest limit. Even if the slats were lowered to the bottom, the bottom slats did not sufficiently adhere to the draining surface, or the slats did not fully extend. Therefore,
In order to compensate for such a problem, there has been a problem that it is necessary to increase the size of the draining plate, for example, by contacting the bottom slat with a draining surface composed of a vertical surface.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention has a linkage mechanism installed in guide rails located on both sides of the slat, and a plurality of upper and lower slat linkages are installed in the linkage mechanism. In a shutter that is supported by each mechanism, and each slats are moved up and down and rotated based on the expansion and contraction of the linkage mechanism to open and close, a linkage mechanism is attached to a slide carriage 38 that is vertically movable with respect to a guide rail 2. A top limiter 42 that connects the uppermost part of 15 and sets the lower limit of movement of the slide carriage 38 to the guide rail 2 is attached, and the lift carriage 43 supported so as to be vertically movable in the guide rail 2 is provided with the linkage mechanism 15 of the linkage mechanism 15. By connecting the lowermost part and moving the lift carriage 43 upward by the driving force of the driving means, the linkage mechanism is used. It has a configuration which is adapted convolve the slats 6 upward.

(Operation) By the above means, when lowering the slats, the height of the uppermost slat 6 is set at the position of the top limiter 42, and when folding the slats, each slat 6 is pushed up by the lift carriage 43, and the uppermost slat 6 is pushed up. The slat is pushed upward from the top limiter 42.

(Embodiment) Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. As shown in FIG.
Has a pair of guide rails 2 standing upright on both sides thereof, and bearing portions 3a and 3b fixed to the upper ends thereof.
The drive shaft 4 is rotatably supported by 3b. A motor 5 is fixed to one of the bearings 3a, and a drive shaft 4 is rotationally driven to move up and down a slat 6 which is vertically supported between the guide rails 2 in multiple stages. The motor 5 is capable of rotating in the forward and reverse directions based on the operation of an operation switch (not shown), and prevents rotation of the drive shaft 4 except when it is in operation.

The structure of the bearing portion 3a will be described with reference to FIG. 3. The drive shaft 4 fitted to the output shaft of the motor 5 has a pulley pipe 7 fitted to the outer periphery thereof, and the drive shaft 4 is driven by the operation of the motor 5 via the drive shaft 4. The pulley pipe 7 is rotated. A spring receiver 8 is fitted and fixed on one side of the pulley pipe 7 in the bearing portion 3a, and a sprocket 9 is rotatably supported on the other side of the pulley pipe 7 on the other side.

A torsion coil spring 10 is arranged between the spring receiver 8 and the sprocket 9, and one end 11 a thereof is supported and fixed to the spring receiver 8 and the other end 11 b thereof is supported by the sprocket 9.

Protrusions 12 are formed on the outer peripheral surface of the sprocket 9 at regular intervals in the circumferential direction. The drive belt 13 mounted on the sprocket 9 has an engagement hole 1 formed at regular intervals.
4 engages with the projection 12 of the sprocket 9, and is moved up and down in the guide rail 2 as the sprocket 9 rotates. The drive belt 13 is made of a polyester resin and has the flexibility to bend along the sprocket 9 and is made of a material capable of transmitting a pressing force and a pulling force along the moving direction of the drive belt 13. There is.

Therefore, when the motor 5 is operated, the drive belt 13 is moved up and down via the drive shaft 4, the pulley pipe 7, the torsion coil spring 10 and the sprocket 9, and the motor 5 is further operated while the movement of the drive belt 13 is blocked. ,
Since the pulley pipe 7 is rotated while the sprocket 9 is prevented from rotating, its rotational force is absorbed and stored in the torsion coil spring 10, and the urging force acts on the sprocket 9 in the same direction. Has become.

The other bearing portion 3b has the same structure as the bearing portion 3a except for the motor 5, and therefore its description is omitted.

As shown in FIG. 1, slats 6 are provided in the guide rail 2.
A linkage mechanism for raising and lowering and adjusting the angle is provided, and as shown in FIGS. 4 to 7, a large number of slats 6 are supported by the linkage mechanism. Since the mechanism is provided in each of the left and right guide rails 2 with the same structure, the linkage mechanism in one of the guide rails 2, that is, the linkage mechanism shown in FIG.
In the panto link 15, a large number of link rods 16 are provided so as to be capable of expanding and contracting vertically in a pantograph shape. As shown in FIG. 8, a support shaft 18 of a first slat holder 17 is rotatably fitted and inserted at an intersection where each link rod 16 intersects in an X shape. The rod 16 is connected in an X shape.

A circular hole 19 is formed at one end of each link rod 16, and a long hole 20 is formed at the other end along the longitudinal direction of the link rod 16. The circular hole 19 and the long hole 20 are connected by the link rivet 21 to form the panto link 15, and the ends of the link rods 16 are connected by the action of the long hole 20 while having some play. In the link mechanism provided in the other guide rail 2, the link rod 16 is connected in an X shape by the support shaft 23 of the second slat holder 22 as shown in FIG.

As shown in FIG. 8 and FIG. 9, the support shafts 18, 23 of the first and second slat holders 17, 22 are partially cut in the longitudinal direction to form fitting portions 18a, 23a. A locking hole 24 is formed in the fitting portion 18a, 23a in the radial direction.

Support shaft 1 that penetrates each link rod 16 of the panto link 15
The tilt arm 25 is attached to the fitting portions 18a and 23a of the reference numerals 8 and 23.
One end of each is fitted. That is, a fitting hole 26 having a shape corresponding to the fitting portions 18a and 23a is formed at one end of the tilt arm 25 in a direction orthogonal to the longitudinal direction of the tilt arm 25, and a member penetrating the fitting hole 26 is formed. The stop hole 27 is formed. Then, by fitting the fitting portions 18a and 23a of the support shafts 18 and 23 into the fitting holes 26 and inserting the pins 27a into both the locking holes 24 and 27, one end of the tilt arm 25 becomes the support shaft 18, 23, the first and second slat holders 17 and 22 are rotated as the tilt arms 25 are rotated.

An engaging portion 29 is formed at the other end of the tilt arm 25 via a constricted portion 28, and the engaging portion 29 is supported by a tilter guide 30 arranged in the guide rail 2 over substantially the entire length so as to be vertically movable. ing. That is, the tilter guide 3
0 is formed in a substantially rectangular tube shape, and an opening 31 through which the constricted portion 28 can be inserted is provided on one side thereof over the entire length in the longitudinal direction, and an engaging portion 29 is a tilter guide 30.
It is movably supported in its longitudinal direction.

As shown in FIGS. 1 and 4, the tilter guide 3 is provided.
The upper end of the support lever 32 is rotatably supported at several positions above and below the support 0, and the lower end of the support lever 32 is rotatably supported by the guide rail 2. Therefore, the fourth
As shown in FIG. 7 and FIG. 7, the tilter guide 30 uses the lower end of the support lever 32 as a fulcrum of rotation to guide the guide rail 2.
It can slide in the front-back direction while rotating inside. Further, as shown in FIG. 1, the tilter guide 30 is connected to the guide rail 2 via a coil spring 33, and is constantly held at the positions shown in FIGS. 1 and 4 by the biasing force of the coil spring 33. .

A tilt lever 34 is rotatably supported at the lower end of the tilter guide 30. That is, the tilt lever 3
4 is formed in a substantially triangular plate shape, and the first top part thereof is a shaft 35.
Is rotatably supported on the guide rail 2, the second top is rotatably supported on the lower end of the tilter guide 30 by a shaft 36, and an engagement shaft 37 is projected on the third top. The distance between the shafts 35 and 36 provided at the first and second tops is the same as the distance between the pivots of both ends of the support lever 32, and the tilt lever 34 is rotated in the direction of arrow A in FIG. Then, the tilter guide 30 moves in the guide rail 2 while rotating around the shaft 35 and the lower end of the support lever 32 as a rotation fulcrum against the biasing force of the coil spring 33.

The support shafts 18, 23 of the uppermost slat holders 17, 22 in the both side guide rails 2 are connected to the link rod 16 and the tilt arm 25 and are supported by the slide carriage 38. That is, as shown in FIGS. 1 and 11, the slide carriage 38 has a pair of slide runners 39 rotatably supported up and down.
Is supported in a first guide groove 40 provided on one side of the opening groove 2a of the guide rail 2 so as to be vertically movable. Also,
One side of the slide carriage 38 is bent toward the inner surface of the guide rail 2 to form a contact piece 41.
A top limiter 42 is fixed to the inner side surface of the guide rail 2 on the movement locus of 1. Therefore, as shown in FIGS. 4 and 5, the slide carriage 38 has the contact piece 41.
Can be moved up and down along the first guide groove 40 with the lower limit of the position of contacting the top limiter 42.

The support shafts 18 and 23 of the lowermost slat holders 17 and 22 are connected to the link rod 16 and the tilt arm 25 and also to the lift carriage 43. That is, a pair of lift runners 44 is rotatably supported on the lift carriage 43, and the lift runners 44 can move up and down in the second guide groove 45 provided on the other side of the opening groove 2a of the guide rail 2. Supported by. Further, as shown in FIGS. 12 and 13, one end of the drive belt 13 that moves in a belt groove 13a provided on the front and rear inner side surfaces of the guide rail 2 is attached to one side of the lift carriage 43. . Therefore, the lift carriage 43 is moved up and down along the second guide groove 45 along with the drive belt 13 moved by the rotation of the sprocket 9.

A guide piece 46 that abuts the engagement shaft 37 of the tilt lever 34 is formed in the lower center of the lift carriage 43.
The guide piece 46 is composed of a bottom piece 47 and a vertical piece 48,
When the lift carriage 43 descends to the position of the tilt lever 34, the bottom piece 47 first contacts the engaging shaft 37 as shown in FIG. 6, and when the lift carriage 43 is further lowered from this state, the tilt lever 34 moves the tilt lever 34. Since the shaft 35 is rotated in the direction of the arrow A against the urging force of the coil spring 33 attached thereto, as shown in FIG. It comes into contact with.

The slat 6 supported between the first and second slat holders 17 and 22 is formed of an aluminum extrusion mold member as shown in FIGS. 8 and 9, and has a pair of locking protrusions facing each other at the center of the lower surface. Article 49 is formed. The locking ridge 49
Is a step portion 49a protruding toward the middle portion in a direction away from each other.
Is formed, and the tips project in directions approaching each other to narrow the opening between the locking projections 49.

As shown in FIG. 4, the front portion and the rear portion of the slat 6 are bent obliquely downward and are formed in a trapezoidal cross section. Also,
A synthetic resin gasket 50 is fitted to the front end, the rear end is bent slightly upward from the horizontal direction to form a gasket contact portion 51, and the end edge is bent obliquely upward to form a hermetic seal. It is the edge 52.

As shown in FIG. 8, the holder body 53 of the first slat holder 17 is formed in a substantially rectangular parallelepiped shape, and the support shaft 18 is projected from one side thereof. The holder body 53
Is formed in such a size that it can be inserted between the locking projections 49 of the slat with a slight margin, and a projection 54 corresponding to the opening between the locking projections 49 is formed on the lower surface. Therefore, the holder body 53 of the first slat holder 17 can be inserted into the locking projection 49 from the side of the slat 6.

As shown in FIG. 9, the second slat holder 22 is formed in a substantially rectangular parallelepiped shape such that the holder main body 55 can be inserted into the space between the locking projections 49 of the slat 6 from the opening thereof, and faces upward. The support shaft 23 is formed in a trapezoidal cross section with a slightly narrower width, and the spindle 23 projects from the holder body 55.

The slat clip 56 for preventing the second slat holder 22 and the slat 6 from coming off is formed by bending an elastic metal plate into a thin shape substantially equal to the interval and height of the locking ridges 49. The edge is bent inward and the hook 5
7 are formed. And the second slat holder 2
When the holder main body 55 of No. 2 is inserted from below the slat 6 between both the locking projections 49 and the slat clip 56 is fitted from below the holder main body 55 to the outside of both the locking projections 49 of the slat 6, As shown in FIG. 15, since the hook portion 57 engages with the step portion 49a of the locking projection 49, the slats 6
Is prevented from coming off from the second slat holder 22.

As shown in FIG. 18, a bottom gasket 58 is provided at the front end of the bottom slat 6a located at the lowermost stage of the slat 6, that is, at the lower end of the bottom slat 6a in the vertical state shown in FIG.
And the draining surface 5 of the folding shutter 1
It is designed to come into close contact with 9 from above.

Next, the operation of the convolution shutter configured as described above will be described.

Now, the procedure for attaching the slats 6 to the shutter as described above will be described. First, the guide rails 2 in which the linkage mechanism is arranged in advance are erected at predetermined intervals, and the upper ends of the guide rails 2 are set to the motor 5. Are linked by a drive shaft 4 with a built-in drive mechanism so that the linkage mechanisms in both guide rails 2 can be driven synchronously. In this state, a large number of holder main bodies 53 of the first slat holder 17 are vertically projected from the opening groove 2a of one guide rail 2 via the support shaft 18, and the holder main body 53 of the other guide rail 2 is supported from the opening groove 2a of the other guide rail 2. A large number of holder main bodies 55 of the second slat holder 22 are projected via 23.

In order to support the slat 6 between the slat holders 17 and 22 from this state, the first and second locking projections 49 are rotated to the state shown in FIGS. The locking projection 49 on one side of the slat 6 is fitted to the holder main body 53 of the slat holder 17 from the side as shown in FIG. 14, and on the other side of the slat 6 the holder main body 55 of the second slat holder 22. From above, the locking ridge 4 of the slat 6
9 is fitted, and the slat clip 56 is fitted to the fitted portion from below as shown in FIG. Then, the slat 6 is immovably fixed to the first and second slat holders 17 on both sides thereof.

Therefore, in this shutter, the slat 6 is attached so that one side of the slat 6 is immovably supported by fitting one side of the slat 6 to the first slat holder 17 from that side, and in this state, the slat 6 is fixed. The other side is fitted to the second slat holder 22 from above and the slat clip 5 is attached.
Since it can be fixed by 6, the mounting work can be easily performed by one person without using a mounting screw.
Since the connecting portion between the slat holders 17 and 22 and the slat 6 is not exposed to the outside of the room even when the slat 6 is rotated in the horizontal direction and the vertical direction, the shutter has an excellent appearance. be able to. Furthermore, since the slat 6 and the holder main body 53 of the first slat holder 17 are fitted with a slight gap, even if there is a slight error in the dimension between the guide rails 2, the gap is absorbed by the gap. can do.

Next, the operation of the convolution shutter as described above will be described.

Now, as shown in FIGS. 5 and 6, when the motor 5 is actuated to move the drive belt 13 and the lift carriage 43 moves up and down to expand and contract the panto link 15, each slat 6 is moved.
Is constantly held in a horizontal state and its interval expands and contracts.

That is, since the tilter guide 30 is held in a fixed position by the action of the support lever 32 and the coil spring 33, as shown in FIGS. 5 and 6, the panter link 15 expands and contracts without changing the angle of the tilt arm 25. In this state, the contact piece 41 of the slide carriage 38 contacts the top limiter 42 and is located at the lower limit of movement.

When the sprocket 9 is rotated in the direction of arrow B in FIG. 5 from this state, the lift carriage 43 is pulled up via the drive belt 13 and the panto link 15 is contracted upward.

In this way, the pantolink 15 is shortened to the limit,
When the lift carriage 43 is further pulled up from that state, the lowermost link rod 1 supported by the lift carriage 43 is supported.
6 and the tilt arm 25 lift the link rod and the tilt arm above it, so that the slats 6 and the links are pushed up by the lift carriage 43 as shown in FIG. 4, and the slide carriage 38 also moves upward. Pushed up and away from the top limiter 42, each slat 6
And, the linkage mechanism is pushed up just below the drive shaft 4 and folded.

When the sprocket 9 is rotated in the direction of arrow C in FIG. 4 by the motor 5 to close the folding shutter 1, the lift carriage 43 descends, and the folded slat 6 and linkage mechanism are integrated with the slide carriage 38. To descend. Then, when the contact piece 41 of the slide carriage 38 comes into contact with the top limiter 42, further lowering of the slide carriage 38 is prevented, and in this state, the lift carriage 43
Further down, the panto link 15 extends as shown in FIGS. 5 and 6, and each slat 6 is sequentially opened in a horizontal state. At this time, due to the play existing between the link rods 16, the lower slat 6 is opened later than that of the upper slat 6 as shown in FIG.

As shown in FIG. 6, when the slats 6 are opened at predetermined intervals, the guide piece 46 of the lift truck 43 moves the tilt lever 34.
Abuts on the engaging shaft 37. From this state, the lift truck 43
When is further lowered, the engaging shaft 37 is pushed downward by the bottom piece 47 of the guide piece 46, so that the tilt lever 34 is rotated in the direction of arrow A in FIG. Then, the tilter guide 30 moves the coil spring 3
Since the slat 6 is rotated in the same direction against the biasing force of 3 and slides to the opposite side with respect to the pantolink 15 as shown in FIG. 7, each slat 6 is moved through the tilt arm 25 and the slat holders 17 and 22. It is rotated vertically in the same phase.
Then, as shown in the figure, the engagement shaft 37 moves from the bottom piece 47 while contacting the upright piece 48, and the lift carriage 43 is further lowered while the slats 6 are vertically rotated to move the slats 6 to the slats 6. After the gap 6 is further opened, the operation of the motor 5 is stopped.

That is, by rotating the tilt lever 34, each slat 6
16 is rotated in the vertical direction, the gasket 50 at the lower edge of each slat 6 contacts the gasket contact portion 51 of the lower slat, as shown in FIG. Therefore, the mounting position of the tilt lever 34 is such that when the slat 6 is rotated vertically, it is exactly in the state shown in FIG. Will be set to. Then, when the lift carriage 43 is further lowered from this state, as shown in FIG. 17, the gasket 50 of each slat 6 moves upward while abutting on the gasket abutting portion 51 of the slat in the lower stage thereof, and eventually sealed. It adheres to the edge 52. At this time, the first
As shown in FIG. 8, the bottom gasket 58 of the bottom slat 6a is pressed against the water draining surface 59, at which point the further lowering of the slat is prevented and the extension of the pantolink 15 is also prevented.

When the motor 5 is further rotated in the same direction in this state, the pulley pipe 7 is rotated while the rotation of the sprocket 9 is blocked, and the rotational force is stored in the torsion coil spring 10.

When the operation of the motor 5 is stopped in this state, the urging force of the torsion coil spring 10 is transmitted to the drive belt 13 and the lift carriage 43 is pressed downward, so that the bottom gasket 58 of the bottom slat 6a is drained. Face 59
It is kept pressed against.

When the shutter closed as described above is opened, the motor 5 is operated to rotate the drive shaft 4 in the reverse direction. First, the drive shaft is rotated by the amount of rotation stored in the torsion coil spring 10. 4, the rotation of the drive shaft 4 is transmitted to the sprocket 9 via the torsion coil spring 10, and the drive shaft 4 and the sprocket 9 rotate integrally.

Then, the lift carriage 43 is pulled up via the drive belt 13 to separate the bottom slat 6 a from the water draining surface 59, and as the lift carriage 43 rises, the engagement shaft 37 of the tilt lever 34 stands up on the guide piece 46. Moving from the piece 48 along the bottom piece 47 and rotating based on the urging force of the coil spring 33, the tilter guide 30 moves from the state shown in FIG. 7 to the state shown in FIG. Is rotated to. When the lift carriage 43 is further pulled up in this manner, the slat 6 is folded under the drive shaft 4 as shown in FIG. 4 as described above.

As described above, in the folding shutter 1, the slats 6 are moved up and down by moving the lift carriage 43 up and down by the drive belt 13 driven by the motor 5, and expanding and contracting the panto link 15 based on the movement of the lift carriage 43. That is, the uppermost slat is supported by the slide carriage 38 which is supported by the guide rail 2 so as to be vertically movable with the mounting position of the top limiter 42 as the lowermost limit. When the slat 6 is moved up and down, the slide carriage 38 supports the uppermost slat at the lowermost position where it abuts against the top limiter 42.
When the slat 6 is folded, the slide carriage 38 is raised and the slat 6 is folded under the slat at the uppermost stage in a state where the slat is pulled up from the time of lifting.

Therefore, if the position of the top limiter 42 is set at the upper edge of the shutter opening, the shutter opening can be opened and closed with a minimum number of slats, and as a result, the space for folding the slats 6 can be reduced. Then, since the folding position can be moved upward by moving the position of the uppermost slat at the time of folding, even if the uppermost slat is positioned near the shutter opening when the slat is moved up and down,
When folding, the slats can be folded above the shutter opening. In addition, even if the bottom slat 6a is lowered to the lowest limit due to the incompatibility between the lifting stroke of the shutter and the height of the water draining surface 59, the water draining surface 5 still remains.
If a gap is formed between the slat 6 and the gasket contact portion 51 of each slat 6 does not extend until the slat gap abuts on the sealing edge 52 of the adjacent slat, the mounting position of the top limiter 42 is appropriately set. The problem can be solved by changing to.

On the other hand, for adjusting the angle of the slat 6, the tilt carriage 34 is rotated by lowering the lift carriage 43, and the tilter guide 30 is moved based on the rotation of the tilt lever 34, whereby the tilt arm 25 is rotated to rotate the slat. 6 is rotated in the same phase. That is, when the slats 6 are opened in the horizontal direction up to a predetermined interval, the lift truck 43 has its guide piece 46 abutting on the engaging shaft 37 of the tilt lever 34 and pushing down the engaging shaft 37 with the bottom piece 47, When the tilt lever 34 is rotated by the operation and each slat 6 is vertically rotated, the engagement shaft 37 moves along the upright piece 48, and each slat 6 is further held vertically. The lift carriage 43 descends, the gap between the slats 6 is further extended, and the bottom slat 6a at the lowermost stage is pressed against the draining surface 59.

That is, the bottom slat 6b is brought into contact with the water draining surface 59 and the rotation of the sprocket 9 is prevented, so that the pulley pipe 7 is slightly rotated and the bottom slat 6a is pressed against the water draining surface 59 by the urging force of the torsion coil spring 10. . Then, since the bottom gasket 58 of the bottom slat 6b is surely pressed against the draining surface 59 by the urging force of the torsion coil spring 10, it is possible to prevent rainwater from entering.

Since the bottom slat 6a is vertically rotated in synchronization with the upper slat 6, the position of the tilt lever 34 is set so that there is still some distance between the bottom slat 6a and the drainage surface 59. Then, the bottom slat 6a is pressed against the draining surface 59 from above. Therefore, the draining surface 59 does not need to be a vertical surface that matches the lowered position of the bottom slat 6a.
Since it is sufficient to provide a horizontal surface or a slope close to it in the vicinity of the descent, the installation is extremely easy.

When the slat 6 is rotated from the vertical direction to the horizontal direction, the tilt lever 34
Also, the tilter guide 30 operates in the opposite manner.

Therefore, the folding shutter 1 is used for the lift carriage 43.
Based on the movement, the slat 6 is moved up and down, the bottom slat 6a is pressed against the draining surface 59 automatically and continuously by a common driving means by the motor 5, and the operation is surely performed by the linkage mechanism. .

The drive belt 13 that transmits the rotational force of the motor 5 to the lift carriage 43 via the sprocket 9 is made of polyester resin and has the flexibility to bend along the sprocket 9, and the drive belt 13 moves Since it is made of a material capable of transmitting a pressing force and a tensile force along the direction, the pressing carriage and the pulling force can be applied only to one sprocket 9 without making the drive belt 13 endless. The drive belt 13 itself may be short enough to match the moving distance of the lift carriage 43.

Effect of the Invention As described in detail above, this invention has a linkage mechanism installed inside the guide rails located on both sides of the slat, and supports a plurality of upper and lower slats on the linkage mechanism to expand and contract the linkage mechanism. On the basis of the shutter that is configured to open and close and rotate each slat to open and close, the position of the uppermost slat can be automatically changed when the slat 6 is folded and when it is lowered.
The slat 6 can be effectively opened and closed to reduce the folding dimension, and by adjusting the position of the top limiter 42, the lower limit of the slat 6, that is, the positional relationship with the drain surface 59 can be easily adjusted. Shows excellent effects.

[Brief description of drawings]

FIG. 1 is a front view showing a linkage mechanism of a folding shutter embodying the present invention, FIG. 2 is a front view showing the folding shutter, and FIG. 3 is a sectional view showing a bearing portion of a drive shaft. FIG. 5, FIG. 6 and FIG. 7 are schematic views showing the operation of the linkage mechanism, FIG. 8 is an exploded perspective view showing one slat support structure, and FIG. 9 is an exploded perspective view showing the other slat support structure. 10 and 11 are front views of the tilt lever portion, FIG. 11 is a plan view of the slide carriage portion, and FIG.
FIG. 13 is a front view of a lift truck portion, FIG. 13 is a plan view of the same, and FIG. 14 is a sectional view of one slat support portion.
5 is a cross-sectional view of the other slat support portion, FIG. 16 is a cross-sectional view showing a connected state of the slats that are vertically rotated, and FIG. 17 is a cross-sectional view showing a state in which the slats are further extended from the connected state. FIG. 18 is a cross-sectional view showing a state where the bottom slats are in contact with the draining surface. Guide rail 2, motor 5, slat 6, sprocket 9, drive belt 13, panto link 15, slide carriage 38, top limiter 42, lift carriage 43.

Claims (1)

[Scope of utility model registration request] 1. A linkage mechanism is installed in guide rails located on both sides of a slat, and a plurality of upper and lower slats are supported by the linkage mechanism. The slats are moved up and down based on expansion and contraction of the linkage mechanism. In a shutter that is moved and opened / closed, a slide carriage (3) supported so as to be vertically movable with respect to a guide rail (2).
8) A top limiter (42) for connecting the uppermost part of the linkage mechanism (15) to the guide rail (2) and setting the lower limit of movement of the slide carriage (38) is attached to the guide rail (2),
By connecting the lowermost part of the linkage mechanism (15) to the lift carriage (43) supported in the guide rail (2) so as to be vertically movable, and moving the lift carriage (43) upward by the driving force of the driving means. A foldable shutter characterized in that a slat (6) is folded upward through a linkage mechanism.