JPH0628633Y2 - 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 related to the built-in shutter.

(Prior Art) Conventionally, as one type of shutter, by connecting both sides of a slat with a connecting member such as a string or a wire, and suspending and supporting it in a number of steps up and down, the connecting member is moved up and down in the guide rails on both sides. There is one in which the shutter is closed by vertically moving the slats in the same phase while raising and lowering the slats.

(Problems to be solved by the invention) However, in the shutter as described above, a large storage space is provided around the take-up shaft because the slats are taken up with the take-up shaft or rewound up and down together with the connecting member. In addition to the requirement, a storage box needs to be provided around the winding shaft in order to cover up the slats wound around the winding shaft, which is aesthetically unfavorable.

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 the mechanism at equal intervals and that is opened and closed by rotating and lifting each slat based on the expansion and contraction of the linkage mechanism, a first slat support shaft 55 is provided at both ends of each slat, This first slat spindle 5
5, the tilt arm 56 is connected, and the tilt arm 56
And a second slat support shaft 57 extending in parallel with the first slat support shaft 55 at the rear lower end of the tilt arm 56. By connecting the linkage mechanism,
First link 17 that expands and contracts up and down, and support link 1
And a second link 16 that is rotatably connected to the first link 17 via 8 and that expands and contracts up and down as the first link 17 expands and contracts. And at least one of the second links 16 is configured by a pantograph link that expands and contracts in a pantograph shape to connect the first slat support shaft 55 to the first link 17 and to connect the second slat support shaft 57 to the second link. Link mechanism 16 and tilt arm 5
A lift carriage 43 that pushes up 6 from below is provided, and as the lift carriage 43 rises, the tilt arm 56 is rotated about the first slat support shaft 55 so that the slats are stacked and folded in a state of being tilted forward. It is configured as.

(Operation) By the above means, each slat 6 moves up and down while maintaining an equal interval, and when the shutter is opened, the slats 6 are vertically stacked and folded in a state of being tilted forward.

(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 elevate a slat 6 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. Further, the drive belt 13 is formed of a material which has flexibility to bend along the sprocket 9 and which can transmit a pressing force and a pulling force along the moving direction of the drive belt 13.

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 is provided for moving up and down. Since the mechanism is provided in the left and right guide rails 2 with the same structure, the linkage mechanism in the right guide rail 2 in FIG. 2, that is, the linkage mechanism shown in FIG. As shown in FIGS. 4 to 7, the linkage 15 is a panto link 16 as a second link that expands and contracts vertically in a pantograph shape, and a first link that expands and contracts in a zigzag shape in parallel with the panto link 16. Distance Link 1 as
7 and 7 are rotatably connected to each other by support links 18 at every other rotation axis.

That is, among the connecting shafts of the panto link 16, the one that connects the links in an X shape is used as the connecting shaft 19a, and the one that moves forward and backward by expansion and contraction and is located on the distance link 17 side is used as the connecting shaft 19b. If the odd-numbered ones of the link shafts of the link 17 from above are the link shafts 20a and the even-numbered link shafts thereof are the link shafts 20b, the link shaft 19b of the panto link 16 and the distance link 1 will be described.
The connecting shaft 20b of No. 7 is connected by the support link 18.

Connecting shaft 20 located at the uppermost end of the distance link 17
a is supported by the tilt carriage 21. The structure of the tilt carriage 21 will be described with reference to FIG. 8, FIG. 9 and FIG.
Is formed by bending a long metal plate along the longitudinal direction in a central portion in a stepped shape to form a front piece 23a and a rear piece 23b. As shown in, the tilt runner 24 is rotatably supported by the runner shaft 25.

Then, as shown in FIG. 11, the tilt runner 24 is movably supported in the first guide groove 27 provided in the vicinity of the opening groove 26 of the guide rail 2, and the tilt carriage 21 is vertically moved in the guide rail 2. It is designed to move only in the direction.

The upper end of the front piece 23a of the tilt base 22 is bent to the opposite side of the tilt runner 24, and a first slat support hole 28 is formed at the tip end portion protruding downward. A first guide hole 29, which is a linear elongated hole, is formed from the central portion in the vertical direction of the front piece 23a to the lower portion, and a second guide hole 30 is formed from the central portion in the vertical direction to the upper portion of the rear piece 23b. There is. Then, as shown in FIG. 8, the upper portion of the second guide hole 30 is bent toward the front piece 23a.

The lift link 31 attached to the tilt base 22 is also formed of a metal plate, and is bent in a step shape at its longitudinal center portion to form a front piece 32a and a rear piece 32b. A slide shaft 33 is fixed to the lower end of the front piece 32a, and the slide shaft 33 is supported only in the first guide hole 29 so as to be vertically movable.

A lift link shaft 34 is fixed to the lower end of the rear piece 32b, and the tip end of the lift link shaft 34 is supported only in the second guide hole 30 so as to be vertically movable. Therefore, the lift link 31 is supported by the tilt base 22 so as to be vertically movable along the first and second guide holes 29 and 30, and when the lift link 31 is moved to the upper limit, the lift link shaft 34 is moved as shown in FIG. Since it is moved forward along the second guide hole 30, it is slightly tilted forward with the slide shaft 33 as a fulcrum.

The vertical portion of the lift link 31 and the tilt base 22
The lower end of the lift link 31 is connected by a coil spring 35, and the lift link 31 is always driven by the urging force of the coil spring 35.
Is supported at the bottom of its range of movement.

A pull link shaft 36 is fixed to the upper portion of the rear piece 32b of the lift link 31, and a base end of a pull link 37 is rotatably supported at the tip of the pull link shaft 36. A second slat support hole 38 is formed at the tip of the pull link 37.

The lower end of the rear piece 23b of the tilt base 22 is bent toward the inner side surface of the guide rail 2 to form a locking piece 39 as shown in FIGS. 8 and 11, and the locking piece 39 is close to the inner side surface. It is designed to move up and down at the specified position.

As shown in FIG. 12, a top limiter 40 is fixed on the movement locus of the locking piece 39 on the inner surface of the upper part of the guide rail 2, and when the tilt base 22 descends, the locking piece 39 contacts the top limiter 40. It is like this.
Therefore, the tilt carriage 21 can move up and down along the guide rail 2 above the position where the engaging piece 39 contacts the top limiter 40 as the lower limit.

As shown in FIG. 1, the drive belt 13 hung from the sprocket 9 in the bearing portion 3a to the front and rear sides is provided in the second guide groove 41 provided on the inner surface of the front portion of the guide rail 2 and the inner surface of the rear portion. It moves in the formed third guide groove 42. A lift carriage 43 is connected to the lower end of the drive belt 13 that moves in the second guide groove 41.

As shown in FIG. 12, in the lift carriage 43, a pair of upper and lower lift runners 45 are rotatably supported by the lift base 44, and the lift runners 45 are provided on the inner front surface of the opening groove 26 of the guide rail 2. It is supported so as to be movable only up and down in the guide groove 46. Therefore, the lift carriage 43 moves up and down along the fourth guide groove 46 in the guide rail 2 as the drive belt 13 moves.

Further, as shown in FIG. 6, since the lift truck 43 supports the lowermost connecting shaft 20a of the distance link 17, the panto link 16 and the distance link 17 are moved to the first position as the lift truck 43 moves up and down. 4 to 6
It is designed to expand and contract as shown.

As shown in FIG. 1, a tilt slide 47 is supported on the lower end of the drive belt 13 moving in the third guide groove 42. As shown in FIG. 10, the tilt slide 47 is suspended and supported from the drive belt 13 by fixing a tape clip 48 to the back surface with a set screw 48a penetrating the engagement hole 14 of the drive belt 13, and the lower end thereof. The guide ridges 48b provided on the section are supported only in the third guide groove 42 so as to be vertically movable. Therefore, as shown in FIG. 12, the tilt slide 47 is provided with the third guide groove 4
It is configured to move up and down with the movement of the drive belt 13 in a state of projecting forward from 2. Since the driving belt 13 has the engaging holes 14 formed at equal intervals,
By changing the mounting position of the setscrew 48a, the tilt slide 47 and the lift carriage 4 on the drive belt 13 can be changed.
It is also easy to change the distance from 3 as appropriate.

Further, the lift link shaft 34 of the tilt carriage 21 shown in FIG. 11 is located on the movement locus of the tilt slide 47, and when the tilt slide 47 rises and its upper surface abuts on the lift link shaft 34, FIG. The lift link 31 is pulled up against the biasing force of the coil spring 35 from the state shown in FIG. 9 to the state shown in FIG. 9, and the lift link 31 moves forward along the second guide hole 30 as shown in FIG. When tilted, the tilt slide 47 is disengaged from its upper surface and the lift link shaft 34, and its front side surface lifts the lift link shaft 34.
Is pushed forward to hold the lift link 31 in this state and move further upward.

Next, the supporting structure of the slats by the linkage mechanism configured as described above will be described.

The slat 6 is formed by bending a thin metal plate, and as shown in FIG. 14, when the slat 6 is in the horizontal direction, a concave line 49 that curves downward is formed in the center,
The front part and the rear part are bent obliquely downward and formed into a trapezoidal cross section. In addition, a synthetic resin gasket 5 is attached to the front end.
0 is fitted, the rear end is bent slightly upward from the horizontal direction to form a gasket contact portion 51, and the end edge is bent upward to have a substantially tubular cross section. It is the edge 52.

Both ends of the slat 6 thus configured are supported by the slat holder 53. That is, as shown in FIG. 14, the slat holder 53 is formed in a shape that follows the cross-sectional shape of the slat 6, and a fitting hole (not shown) of the slat 6 is fitted to the fitting projection 54 formed on the lower surface thereof. Has been done.

As shown in FIG. 15, a first slat support shaft 55 is provided on one side of the slat holder 53 so as to extend along the longitudinal direction of the slat 6, and the first slat support shaft 55 is provided with a tilt arm 56 therebetween. The second slat support shaft 57 projects in the same direction. As shown in FIG. 13, the first slat support shaft 55 projects from the opening groove 26 of the guide rail 2 into the guide rail 2 and can move up and down along the opening groove 26. The second slat support shaft 57 moves up and down in the guide rail 2 as the first slat support shaft 55 moves.

The center of the first slat support shaft 55 coincides with the center of gravity P of the cross section of the slat 6 shown in FIG. 14, and when the slat 6 is horizontal, the angle between the horizontal line and the center line of the tilt arm 56 is 51.6. Is set in degrees.

As described above, each slat 6 has a slat holder 5 at both ends.
Supported by 3. Then, the uppermost slat 6a is attached to the first slat support shaft 5 as shown in FIG. 1 and FIG.
5 is supported in the first slat support hole 28 of the tilt carriage 21 together with the uppermost connecting shaft 20a of the distance link 17, and the second slat support shaft 57 is connected to the uppermost connecting shaft 19a of the pantolink 16. There is. Further, as shown in FIG. 5, in each slat 6 in the lower stage, the first slat support shaft 55 has the connecting shaft 20a of the distance link 17 in order.
The second slat support shaft 57 is also connected to the connection shaft 19a of the panto link 16. Also,
The slat 6b at the lowermost stage has a first slat support shaft 55 supported by the lift carriage 43 together with the connecting shaft 20a of the distance link 17.

In this way, the tilt arm 5 of the slat holder 53 is
Since 6 also functions as a link connecting the panto link 16 and the distance link 17 together with the support link 18, the length thereof is the same as that of the support link 18.

As shown in FIG. 19, a bottom gasket 58 is fitted to the front end of the bottom slat 6b located at the lowermost stage of the slat 6, that is, the lower end of the bottom slat 6b shown in FIG. It is designed to come into close contact with it from above.

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

Now, as shown in FIGS. 5 and 6, when the motor 5 operates to move the drive belt 13 and the lift carriage 43 moves up and down to expand and contract the panto link 16 and the distance link 17, each slat 6 is moved. Is always supported in a horizontal state, and its interval expands and contracts.

That is, the panto link 16 and the distance link 1
7, the panto link 16 and the distance link 17 expand and contract without the support link 18 and the tilt arm 56 being rotated by the action of the support link 18 and the tilt arm 56. Then, in this state, the tilt carriage 21
The locking piece 39 is in contact with the top limiter 40 and is located at the lower limit of movement.

When the sprocket 9 is rotated in the direction of arrow A in FIG. 5 from this state, the lift carriage 43 is pulled up via the drive belt 13, the tilt slide 47 is lowered, and the panto link 16 and the distance link 17 are moved upward. Shrink towards.

When the panto link 16 and the distance link 17 are contracted to their limits in this way, the tilt arms 56 of the slats 6 are vertically stacked as shown in FIG. When the lift carriage 43 is further lifted upward from this state, the tilt arm 56 of the bottom slat 6b supported by the lift carriage 43 lifts the upper tilt arm. Therefore, at this moment, the weight of each slat 6 and each link is increased. As a result, a slip occurs between the tilt links, and at the same time, the tilt links pivot about the first slat support shaft 55, resulting in the state shown in FIG.

That is, as shown in FIG. 14, from the state in which the first slat support shaft 55 of each slat 6 has a gap S above and below the first slat support shaft 55, as shown in FIG. Moreover, the slats 6 are tilted forward by 11.4 degrees. Then, as shown in FIG. 4, from the state where each slat 6 is tilted forward and folded, each slat and each link are further pushed up by the lift carriage 43, and the tilt carriage 21 is also pushed up accordingly. Away from the top limiter 40, the slats and the linkage mechanism are pushed up just below the drive shaft 4 and folded.

When the sprocket 9 is rotated in the direction of arrow B in FIG. 4 by the motor 5 in order to close the folding shutter,
The lift carriage 43 descends and the tilt slide 47
Is raised. When the lift carriage 43 descends, each slat 6 descends together with the linkage mechanism in a state of inclining forward until the locking piece 39 at the lower end of the tilt carriage 21 contacts the top limiter 40.

When the tilt carriage 21 descends and its locking piece 39 comes into contact with the top limiter 40, the tilt carriage 21 is prevented from further descending, and when the lift carriage 43 descends further in this state, the linkage mechanism causes the weight of the linkage mechanism 40 to decrease. On the contrary, the tilt arm 56 is rotated from the state shown in FIG. 16 to the state shown in FIG. 14, and each slat 6 is horizontally rotated in the same phase. When the lift carriage 43 is further lowered in this state, the panto link 16 and the distance link 17 are extended as shown in FIGS. 5 and 6, and the slats 6 are always opened sequentially at equal intervals in a horizontal state.

When the slats 6 are opened by a predetermined distance, the tilt slides 47 that have been sequentially pulled up come into contact with the lift link shaft 34 of the tilt carriage 21 and, as shown in FIG.
1 is lifted upward against the biasing force of the coil spring 35. Then, by the movement of the second slat support hole 38 with respect to the first slat support hole 28 of the tilt carriage 21,
As shown in FIG. 7, the second slat support shaft 57 of the uppermost slat 6a and the uppermost connecting shaft 1 of the pantolink 16 are connected.
9a is pulled upward, the tilt arms 56 of the slats 6 are rotated in the same phase, and the slats 6 are vertically rotated.

At this time, the gasket 50 at the lower edge of each slat 6 is
As shown in the figure, the gasket contact part 5 of the lower slat 6
Abut 1. Therefore, the length of the drive belt 13 is exactly as shown in FIG. 17 when the slat 6 is rotated in the vertical direction.
7 is set to a length capable of pushing up the lift link 31. And at this time, the bottom slats 6b
Does not yet come into contact with the drainage surface 59, and there is a slight distance from the drainage surface 59.

When each slat 6 is vertically rotated and then the sprocket 9 is further rotated in the same direction, the lift link shaft 34 moves forward along the second guide hole 30 as shown in FIG. Therefore, the tilt slide 47 is disengaged from the upper surface of the tilt slide 47, and the tilt slide 47 has its side surface at the lift link shaft 4
While holding 7 in the state shown in the figure, it moves further upward, and the lift carriage 43 further descends. Then, the panto link 16 and the distance link 17 further extend and the intervals increase while the slats 6 move downward by the same distance at the same time. Therefore, as shown in FIG. 18, the gaskets 50 of the slats 6 are located at the lower stage. The slat 6 relatively moves upward while coming into contact with the gasket abutting portion 51, and then comes into close contact with the sealing edge 52.

At this time, since the gasket abutting portion 51 is inclined upward toward the gasket 50 side, as the gasket 50 moves upward relative to the gasket abutting portion 51, they are pressed against each other and the upper and lower sides of each slat are pressed. Both edges are fixed tightly without rattling, and the gasket 5
When 0 is in contact with the sealing edge 52, the edge of each slat 6 is completely fixed in close contact.

When each slat 6 is moved downward in this manner, the bottom gasket 58 of the bottom slat 6b is pressed against the drainage surface 59, as shown in FIG. 19, and further lowering of the slat is prevented at this point, The extension of each link 16, 17 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 sprocket 9 is prevented from rotating, and the rotational force is stored in the torsion coil spring 10.

Then, 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 6b is not wet. It is held in a state of being pressed against the cut surface 59.

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 and the tilt slide 47 starts to descend.
Then, based on the lifting of the lift carriage 43, the spacing between the slats 6 in the vertical state is shortened from the state shown in FIG. 18 as shown in FIG. 17, and at the same time, the bottom slats 6b are raised away from the drainage surface 59. .

After that, when the upper surface of the tilt slide 47 reaches below the lift link shaft 34 as the tilt slide 47 descends, the lift link shaft 34 moves along the second guide hole 30 based on the urging force of the coil spring 35. The tilt slide 47 moves down to the lower limit of its movement. Then, based on the rotation of the pull link 37, the second slat support shaft 57 rotates with respect to the first slat support shaft 55, and each slat 6 returns to the horizontal direction from the vertical state shown in FIG. To be done. In this way, when the lift carriage 43 is further pulled up, as described above, the slat 6 is folded under the drive shaft 4 and tilted forward as shown in FIG.

As described above, in the folding shutter 1, the lifting and lowering of the slats 6 raises and lowers the lift carriage 43 by the drive belt 13 driven by the motor 5, and based on the movement of the lift carriage 43, the panter link 16 and the distance link 17 are moved.
Since it is performed by expanding and contracting, it does not stretch or loosen like a cord or wire, and always operates reliably. When the slat 6 is pulled up to open the shutter, the slat 6 and the link supporting the slat are folded under the drive shaft 4 instead of being wound by the winding shaft. Therefore, it is not necessary to provide a storage box for winding and storing the slat around the drive shaft, and a space for folding the slat 6 under the drive shaft 4 may be secured. Further, since the slat is held in the horizontal direction when the slat is moved up and down, it can be used as a shade if the motor 5 is stopped in this state.

On the other hand, when the slat 6 is lowered to the vicinity of the lowermost limit, the slat 6 is rotated from the horizontal direction to the vertical direction, and from that state, the slat 6 is further lowered and the bottom slat 6 is moved.
The bottom gasket 58 of b is pressed against the water draining surface 59, and further the pulley pipe 7 is slightly rotated in a state in which the bottom slat 6b is prevented from descending and the sprocket 9 is prevented from rotating. The rat 6b is pressed against the drain surface 59. Therefore,
The bottom slat 6b ensures that the bottom gasket 58 is drained by the urging force of the torsion coil spring 10.
Since it is pressed into contact with the rainwater, rainwater can be reliably prevented from entering. Further, even if the drive belt 13 contracts or extends due to aging, it can be absorbed by the amount of relative rotation of the pulley pipe 7 with respect to the sprocket 9.

Further, the length of the drive belt 13 is set such that the bottom slat 6b, like the slat 6 on the upper stage thereof, still has a slight distance from the drainage surface 59 when rotated in the vertical direction. Then, after being rotated in the vertical direction, it is further lowered as the lift carriage 43 is lowered, and the bottom slat 6b is lowered and pressed against the drainage surface 59 from above. Therefore, the draining surface 59 does not have to be a vertical surface that is accurately aligned with the descending position of the bottom slat 6b, and a horizontal surface or an inclined surface close to it may be provided near the descending position of the bottom slat 6b, so that the installation is extremely easy. . Further, after the bottom slat 6b comes into contact with the drainage surface 59, the bottom slat 6b is further pressed against the urging force of the torsion coil spring 10, so that rain and wind can be surely prevented from entering.

Further, in the folding shutter 1, as shown in FIG. 14, when the slat 6 is in the horizontal direction, the tilt arm 56 supporting the slat 6 is 51.6 with respect to the horizontal line.
When the slat 6 is folded into the upper part of the guide rail 2, the slat 6 is rotated from the state shown in FIG. 14 to the state shown in FIG.
Is tilted forward by 11.4 degrees. Therefore, in this state, the dimension in the front-rear direction is smaller than that in the state in which the slat 6 is in the horizontal direction, and the slat storage portion can be made small.

Further, as the angle of the tilt arm 56 with respect to the horizontal line increases, the gap S shown in FIG. 16 also increases, so the forward tilt angle when the slat 6 is folded also increases. However, in this case, the upward drive force acting on the second slat support shaft 57 due to the rise of the lift link 31 becomes less likely to act as the rotational force on the tilt arm 56, and the motor 5 is rotated to rotate the slat 6. The load on the

Further, the center of the first slat support shaft 55, which is the pivotal fulcrum of the slat 6, coincides with the center of gravity P with respect to the cross section of the slat 6, so that the slat 6 is rotated based on the pivotal movement of the tilt arm 56. It is possible to rotate the slat 6 with a slight rotational force, and even after the rotation, the rotational force based on the weight of the slat itself does not act on the first slat support shaft 55, so that the slat 6 can be stably rotated at a predetermined angle. Can be held.

Although the distance link 17 that expands and contracts in a zigzag shape is used as the first link and the pantolink 16 that expands and contracts in a pantograph shape is used as the second link in the above-described embodiment, both the first and second links are pantolinks. Alternatively, the panto link 16 may be used as the first link, and the distance link 17 may be used as the second link.

Effect of the Invention As described in detail above, according to this invention, each slat 6
Since they move up and down while maintaining equal intervals, they look good even while they are moving up and down, and the slats 6 can be folded forward and folded into a stacked state so that the storage space for the slats 6 is small. Can exert an excellent effect.

[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. 5, FIG. 6, FIG. 6 and FIG. 7 are schematic views showing the operation of the linkage mechanism, FIG. 8 is a front view of the tilt carriage, and FIG. 9 is a front view showing the operation of the tilt carriage.
FIG. 11 is a front view of a tilt slide, FIG. 11 is a cross-sectional view showing a tilt carriage in a guide rail, and FIG. 12 is a cross-sectional view showing a tilt slide and a lift carriage in a guide rail.
FIG. 13 is a cross-sectional view showing a support structure of the uppermost slat, FIG. 14 is a front view showing a slat support structure by a slat holder, FIG. 15 is a plan view of the same, and FIG.
FIG. 17 is a front view showing the tilt arm in a state where the slats are tilted forward, FIG. 17 is a cross-sectional view showing a connected state of the slats rotated in the vertical direction, and FIG. 18 is a state in which the slats are further spaced from the connected state. FIG. 19 is a cross-sectional view showing an extended state, and FIG. 19 is a cross-sectional view showing a state in which the bottom slats are in contact with the drainage surface. Guide rail 2, drive shaft 4, slat 6, panto link 16, distance link 17, support link 18,
Tilt cart 21, lift cart 43, tilt slide 4
7, slat holder 53, first slat support shaft 55,
Tilt arm 56, second slat support shaft 57.

Claims (1)

[Scope of utility model registration request] 1. A linkage mechanism is installed inside guide rails located on both sides of the slat, and a plurality of vertically slats are supported by the linkage mechanism at equal intervals, and the slats are moved up and down based on expansion and contraction of the linkage mechanism. In the shutter that is rotated and opened and closed, a first slat support shaft (55) is provided at both ends of each slat, and a tilt arm (56) is connected to the first slat support shaft (55). This tilt arm (56)
Is extended so as to incline rearward and downward by a predetermined angle with respect to the slat surface, and a second downwardly extending end portion of the tilt arm (56) extends in parallel with the first slat support shaft (55). A slat support shaft (57) is connected, and the linkage mechanism is rotatably connected to the first link (17) via a support link (18) and a first link (17) that expands and contracts in the vertical direction. The first link (17) and the second link (16), and the second link (16) that vertically expands and contracts as the first link (17) expands and contracts. At least one is configured by a pantograph link that expands and contracts in a pantograph shape, and the first slat support shaft (55) is connected to the first link (17) and the second slat support shaft (57) is connected to the second link. To (16) Then, a lift carriage (43) that pushes up the linkage mechanism and the tilt arm (56) from below is provided, and the tilt carriage (56) is raised about the first slat support shaft (55) by the lift carriage (43) rising. A convoluted shutter characterized in that the slats are rotated to be stacked and folded in a state of being tilted forward.