JPH0560027B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a shutter installed at the doorway or window of a house, and in particular to a shutter whose slats are folded upward to be stored when the shutter is opened. This is related to the included shutter.

(Prior art) Conventionally, as a type of shutter, the slats are connected on both sides with connecting members such as strings or wires, suspended in multiple stages vertically, and the connecting members are raised and lowered within guide rails on both sides. There is one in which the slats can be raised and lowered and the angles of each slat can be adjusted in the same phase.

(Problem to be Solved by the Invention) However, in the above-mentioned shutter, the slats are wound up or unwound together with the connecting member on a winding shaft and raised and lowered. The slats tend to stretch and elongate, making it difficult to raise and lower the slats and adjust their angles.In addition, it is necessary to provide a storage box around the winding shaft to cover up the slats wound around the winding shaft, which is not aesthetically pleasing. There was a problem.

In addition, with the above-mentioned conventional shutter, when winding up the slat from a completely lowered state, for example, the slats rise from the lower side while polymerizing one after another, so if the slat is stopped mid-way up and down, the upper The upper slats are widely spaced, and the lower slats are narrowly spaced or not spaced at all. For this reason, conventional shutters have had the problem of being aesthetically undesirable when the slats are stopped mid-way up and down.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention incorporates a slat elevating mechanism within the guide rails located on both sides of the slat, and based on the operation of the elevating mechanism,
In a shutter in which opening and closing operations are performed by raising and lowering and rotating slats arranged in multiple stages vertically, a first link 17 is installed in a guide rail 2.
A lift truck 43 is connected to the lower end of the first link 17, and the first link 17 is moved up and down along the guide rail by raising and lowering the lift truck 43 based on the operation of the drive device 13. A support link 18 expands and contracts the second link 16 that expands and contracts as the first link expands and contracts.
At least one of the first and second links 17 and 16 is configured as a pantograph link that expands and contracts like a pantograph, and each slat 6 has a second link at both ends. First and second slat support shafts 55 and 57 are provided, with the first slat support shaft 55 being supported by the first link 17 and the second slat support shaft 57 being supported by the second link 16. The lowermost slat 6b of each slat 6 is connected to the lift truck 43, and the uppermost slat 6a is connected to the tilt truck 21 and positioned at a fixed point, so that as the lift truck 43 moves up and down, the slat 6 The slats 6 are supported so as to be movable up and down with a constant interval and to be rotatable by the rotation of the second link 16 relative to the first link 17.

(Function) With the above means, when the first and second links 16 and 17 are expanded and contracted with the slats in the horizontal direction, the intervals between the slats 6 are increased or decreased while maintaining equal intervals, so that the slats 6 are raised and lowered. At the same time, when the links are retracted and the slats 6 are pulled up, the slats 6 are stacked horizontally and folded together to open the shutter, and when the lowered slats 6 are rotated vertically, the shutter is closed. It will be done.

(Embodiment) Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. As shown in FIG. Bearing parts 3a and 3b are fixed to the bearing parts 3a and 3b, and a drive shaft 4 is rotatably supported by the bearing parts 3a and 3b. A motor 5 is fixed to one of the bearings 3a, and rotates a drive shaft 4 to raise and lower a slat 6 supported vertically in multiple stages between both guide rails 2. The motor 5 is capable of forward and reverse rotation based on the operation of an operation switch (not shown), and prevents rotation of the drive shaft 4 except when in operation.

The structure of the bearing part 3a will be explained according to FIG. 3.A pulley pipe 7 is fitted to the outer periphery of the drive shaft 4 fitted to the output shaft of the motor 5, and the drive shaft 4 is moved by the operation of the motor 5. The pulley pipe 7 is rotated through the pulley pipe 7. Bearing part 3a
Inside, a spring receiver 8 is fitted and fixed on one side of the pulley pipe 7, and a sprocket 9 is rotatably supported on the other side of the pulley pipe 7.

A torsion coil spring 10 is disposed between the spring receiver 8 and the sprocket 9, one end 11a of which is supported and fixed to the spring receiver 8, and the other end 11b 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 that is hung around the sprocket 9 has engagement holes 14 formed at regular intervals that engage with the protrusions 12 of the sprocket 9, and moves up and down within the guide rail 2 as the sprocket 9 rotates. be done. Also,
The drive belt 13 is flexible enough to curve along the sprocket 9, and is made of a material capable of transmitting a pressing force and a tensile force along the direction of movement of the drive belt 13.

Therefore, when the motor 5 operates, the drive belt 13 is moved up and down via the drive shaft 4, pulley pipe 7, torsion coil spring 10, and sprocket 9, and the motor 5 is further operated while the drive belt 13 is prevented from moving. Then, since the pulley pipe 7 is rotated while the rotation of the sprocket 9 is blocked, the rotational force is applied to the torsion coil spring 1.
0, and the biasing force causes a rotational force to act on the sprocket 9 in the same direction.

The other bearing section 3b has the same configuration as the above-mentioned bearing section 3a except for the motor 5, so a description thereof will be omitted.

As shown in FIG. 1, a linkage mechanism for raising and lowering the slat 6 is provided within the guide rail 2. The mechanism is provided in the left and right guide rails 2 with the same configuration, so the second
To explain the linkage mechanism in the guide rail 2 on the right side in the figure, that is, the linkage mechanism shown in FIG. 1, the linkage 1 that makes up the mechanism
5 is a pantolink 16 as a second link that expands and contracts in a pantograph shape in the vertical direction, and a first link that expands and contracts in a zigzag shape in parallel to the pantolink 16, as shown in FIGS. 4 to 7. distance link 17 and the rotation axis of both of them is 1.
It has a structure in which every other part is rotatably connected by support links 18.

That is, among the connecting shafts of the pantolink 16, the connecting shaft 19a connects the links in an X-shape.
At the same time, the one that moves back and forth due to expansion and contraction and is located on the distance link 17 side is the connecting shaft 19.
b, and among the connection shafts of the distance link 17, the odd-numbered one from the top is the connection shaft 20a, and the even-numbered one is the connection shaft 20b, then the connection shaft 19b of the pantograph link 16 and the distance link 17
are connected to the connecting shaft 20b by a support link 18.

A connecting shaft 20 a located at the uppermost end of the distance link 17 is supported by a tilt truck 21 .
The structure of the tilt cart 21 will be explained based on FIG. 8, FIG. 9, and FIG. 11. A front piece 23a and a rear piece 23b are formed by bending the front piece 23a into a shape, and a tilt runner 24 is rotatably supported on a runner shaft 25 on one side of the upper and lower parts of the front piece 23a, as shown in FIG. has been done.

As shown in FIG. 11, the tilt runner 24 is supported so as to be movable within a first guide groove 27 provided near the opening groove 26 of the guide rail 2, and the tilt runner 24 is moved up and down within the guide rail 2. It is designed to move only in one direction.

The upper end of the front piece 23a of the tilt base 22 is bent toward the opposite side of the tilt runner 24, and a first slat support hole 28 is formed at the tip that projects downward. A first guide hole 29, which is a linear elongated hole, is formed from the vertical center to the bottom of the front piece 23a, and a second guide hole 3 is formed from the vertical center to the top of the rear piece 23b.
0 is formed. As shown in FIG. 8, the upper part of the second guide hole 30 is bent toward the front piece 23a.

Lift link 3 attached to tilt base 22
1 is also made of a metal plate, and is bent into a stepped shape at the center in the longitudinal direction 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 so as to be movable up and down within the first guide hole 29.

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

The vertical middle part of the lift link 31 and the lower end of the tilt base 22 are connected by a coil spring 35, and the lift link 31 is always supported at the lowest position of its movement range by the biasing force of the coil spring 35. .

A pull link shaft 36 is fixed to the upper part of the rear piece 32b of the lift link 31, and the pull link shaft 36
A base end of a pull link 37 is rotatably supported at the distal end. 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 connected to the eighth
As shown in the drawings and FIG. 11, a locking piece 39 is formed by bending toward the inner surface of the guide rail 2.
The locking piece 39 is adapted to move up and down at a position close to the inner surface.

A locking piece 3 is attached to the upper inner surface of the guide rail 2.
As shown in FIG. 12, a top limiter 40 is fixed on the locus of movement of the tilt base 22, and the locking piece 39 comes into contact with the top limiter 40 when the tilt base 22 is lowered. Therefore, the tilting carriage 21 has its lowering limit set at the position where the locking piece 39 abuts the top limiter 40, and can move up and down along the guide rail 2 above this position.

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

As shown in FIG. 12, the lift truck 43 has a pair of upper and lower lift runners 45 rotatably supported on a lift base 44, and the lift runners 45 are connected to a fourth groove provided on the inner surface in front of the opening groove 26 of the guide rail 2. It is supported so that it can move only up and down within the guide groove 46 of. Therefore, as the drive belt 13 moves, the lift truck 43 moves toward the guide rail 2.
It is adapted to move up and down along a fourth guide groove 46 inside.

In addition, as shown in FIG.
are supported, so that the pantolink 16 and the distance link 17 expand and contract as the lift truck 43 moves up and down, as shown in FIGS. 4 to 6.

As shown in FIG. 1, a tilt slide 47 is supported at the lower end of the drive belt 13 that moves within the third guide groove 42. As shown in FIG. That tilt slide 4
As shown in FIG. 10, 7 is suspended from the drive belt 13 by fixing a tape clip 48 on the back side with a set screw 48a passing through the engagement hole 14 of the drive belt 13, and is provided at the lower end. The guide protrusion 48b is supported only so as to be vertically movable within the third guide groove 42. Therefore,
As shown in FIG. 12, the tilt slide 47 projects forward from the third guide groove 42 and moves up and down as the drive belt 13 moves. Note that since the drive belt 13 has engagement holes 14 formed at equal intervals, the set screws 48a
By changing the mounting position of the drive belt 13
Tilt slide 47 and lift truck 43 on top
It is also easy to change the distance from the

Also, on the movement trajectory of the tilt slide 47, the lift link shaft 3 of the tilt truck 21 shown in FIG.
4 is positioned, and when the tilt slide 47 rises and its upper surface contacts the lift link shaft 34, the lift link 31 resists the biasing force of the coil spring 35 from the state shown in FIG. 8 to the state shown in FIG. When the lift link 31 is tilted forward along the second guide hole 30 as shown in FIG. Press the side surface and the lift link shaft 34 forward to release the lift link 31.
is held in this state while moving further upwards.

Next, a slat support structure using the linkage mechanism configured as described above will be explained.

The slat 6 is formed by bending a thin metal plate,
As shown in FIG. 14, when the slat 6 is in the horizontal direction, a groove 49 is formed in the center that curves downward, and the front and rear parts are bent diagonally downward to form a trapezoidal cross section. ing. Further, a synthetic resin gasket 50 is fitted to the front end, and the rear end is bent slightly upward from the horizontal direction to form a gasket abutting part 51, and the end edge is bent upward. The sealing edge 52 is bent into a substantially tubular cross section.

The slat 6 thus constructed is supported at both ends by slat holders 53. That is, as shown in FIG.
is formed in a shape that follows the cross-sectional shape of the slat, and a fitting hole (not shown) of the slat 6 is fitted into a fitting protrusion 54 formed on the lower surface thereof.

As shown in FIG. 15, a first slat support shaft 55 is provided on one side of the slat holder 53 and extends along the longitudinal direction of the slat 6. A second slat support shaft 57 is projected in the same direction. Then, as shown in FIG. 13, the first slat support shaft 5
5 projects from the opening groove 26 of the guide rail 2 into the guide rail 2 and is movable up and down along the opening groove 26, and the tilt arm 56 and the second slat support shaft 57 are connected to the first slat support shaft 55. It moves up and down within the guide rail 2 as the guide rail 2 moves.

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

As mentioned above, each slat 6 is supported at both ends by the slat holder 53. As shown in FIGS. 1 and 5, the uppermost slat 6a has a first slat support shaft 55 connected to the distance link 17.
Tilt truck 21 together with connecting shaft 20a at the top end of
The second slat support shaft 57 is connected to the uppermost connecting shaft 19a of the pantolink 16. As shown in FIG. 5, each of the lower slats 6 has a first slat support shaft 55 connected to the connection shaft 20a of the distance link 17, and a second slat support shaft 57 connected to the pantolink 16. The connecting shaft 19a is connected to the connecting shaft 19a. In addition, the first slat support shaft 55 of the lowest slat 6b is connected to the distance link 1.
It is supported by the lift truck 43 together with the connecting shaft 20a of No. 7.

In this way, the tilt arm 56 of the slat holder 53 functions together with the support link 18 as a link connecting the pantograph link 16 and the distance link 17, so that its length 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 lowest stage of the slats 6, that is, the lower end of the bottom slat 6b in the vertical state shown in the same figure, and a bottom gasket 58 is fitted to the front end of the bottom slat 6b located at the lowest stage of the slats 6. from above.

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

Now, as shown in FIGS. 5 and 6, the motor 5
operates to move the drive belt 13, and when the lift cart 43 moves up and down and the pantograph links 16 and distance links 17 expand and contract, each slat 6 is always supported in a horizontal state and the distance between them expands and contracts. do.

That is, due to the actions of the pantograph link 16, distance link 17, support link 18, and tilt arm 56, the pantograph link 16 and distance link 17 extend and contract without the support link 18 and tilt arm 56 being rotated. In this state, the tilting cart 21 has its locking piece 3
9 is in contact with the top limiter 40 and is located at the lower limit of movement.

From this state, when the sprocket 9 is rotated in the direction of arrow A in FIG. It is contracted upwards.

When the pantolink 16 and the distance link 17 are shortened to their limits in this way, the 14th
As shown in the figure, the tilt arm 56 of each slat 6
are stacked one above the other. When the lift cart 43 is further pulled upward from this state, the tilt arm 56 of the bottom slat 6b supported by the lift cart 43 lifts the upper tilt arm, so that at this moment the weight of each slat 6 and each link is As a result, slippage occurs between each tilt link, and at the same time, the slat rotates about the first slat support shaft 55, resulting in the state shown in FIG. 16.

That is, as shown in FIG.
From the state in which the first slat support shafts 55 have a gap S above and below, the first slat support shafts 55 come into close contact with each other as shown in FIG. 16, and the slats 6
This results in a forward lean of 11.4 degrees. Then, as shown in FIG. 4, from the state in which each slat 6 is tilted forward and folded, each slat and each link are further pushed up by the lift truck 43, and along with this, the tilt truck 21 is also pushed upward. Then, each slat and linkage mechanism are pushed up and folded up to just below the drive shaft 4.

When the sprocket 9 is rotated by the motor 5 in the direction of arrow B in FIG. 4 to close the folding shutter, the lift truck 43 is lowered and the tilt slide 47 is pulled up. When the lift truck 43 is lowered, each slat 6 remains tilted forward and lowers together with the linkage mechanism until the locking piece 39 at the lower end of the tilt truck 21 comes into contact with the top limiter 40.

When the tilt truck 21 descends and its locking piece 39 comes into contact with the top limiter 40, the tilt truck 2
1 is prevented from further descending, and when the lift cart 43 further descends in this state, the tilt arm 56 moves to the first position due to the weight of the linkage mechanism.
The slats 6 are rotated from the state shown in FIG. 6 to the state shown in FIG. 14, and each slat 6 is rotated in the horizontal direction in the same phase. When the lift truck 43 further descends in this state, the pantograph link 16 and the distance link 17 extend as shown in FIGS. 5 and 6, and the slats 6 are always opened sequentially at equal intervals while remaining in a horizontal state.

When each slat 6 is opened at a predetermined interval, the tilt slide 47, which has been pulled up in sequence, is moved to the tilt carriage 2.
1, and the lift link 31 is connected to the coil spring 35 as shown in FIG.
Lift it upward against the urging force of. Then, due to the movement of the second slat support hole 38 with respect to the first slat support hole 28 of the tilt truck 21, the second slat support shaft 57 of the uppermost slat 6 and the pantolink 16 are moved as shown in FIG. The top connecting shaft 19a is pulled upward, the tilt arms 56 of each slat 6 are rotated in the same phase, and each slat 6 is rotated in the vertical direction.

At this time, the gasket 50 at the lower edge of each slat 6
as shown in FIG. 17, comes into contact with the gasket contact portion 51 of the lower slat 6. Therefore, the length of the drive belt 13 is such that the tilt slide 47 can push up the lift link 31 when the slats 6 are rotated vertically and the slat spacing is exactly as shown in FIG. 17. It will be set to . At this time, the bottom slat 6b
has not yet come into contact with the water cut surface 59, and there is some distance between the water cut surface 59 and the water cut surface 59.

After each slat 6 is rotated in the vertical direction, when the sprocket 9 is further rotated in the same direction, the ninth
As shown in the figure, since the lift link shaft 34 moves forward along the second guide hole 30, it disengages from the top surface of the tilt slide 47, and the tilt slide 4
7 further moves upward while holding the lift link shaft 34 in the state shown in the figure on its side, and the lift truck 43 further descends. Then, the pantograph link 16 and the distance link 17 extend further, and the distance between the slats 6 increases as each slat 6 moves downward simultaneously and by the same distance, so that the gasket 50 of each slat 6 closes to its lower stage as shown in FIG. The slat 6 moves relatively upward while coming into contact with the gasket abutting portion 51 of the slat 6, and eventually comes into close contact with the sealing edge 52.

At this time, since the gasket abutting part 51 is tilted upward and toward the gasket 50 side, as the gasket 50 moves upward relative to the gasket abutting part 51, both are pressed against each other.
Both the upper and lower edges of each slat are tightly fixed without wobbling, and the gasket 50 is attached to the sealing edge 5.
2, the edges of each slat 6 are completely tightly fixed.

When each slat 6 is moved downward in this way, the bottom slat 6b is moved downward as shown in FIG.
The bottom gasket 58 of the bottom gasket 58 is pressed against the drainage surface 59, and at this point, further lowering of the slat is prevented and 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, so that the rotational force is stored in the torsion coil spring 10.

If the operation of the motor 5 is stopped in this state, the biasing force of the torsion coil spring 10 is transmitted to the drive belt 13 and the lift truck 43 is pressed downward, so that the bottom gasket 58 of the bottom slat 6b is It is held in a state in which it is in pressure contact with the water cutting surface 59.

In addition, when opening the closed shutter as described above, by operating the motor 5 and rotating the drive shaft 4 in the opposite direction, the drive shaft is first rotated by the amount of rotation stored in the torsion coil spring 10. 4 idles, and then 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 sprocket 9 rotate together.

Then, the lift truck 4 is moved through the drive belt 13.
3 is pulled up, and the tilt slide 47 begins to descend. Then, as the lift truck 43 rises, the distance between the slats 6 is reduced from the vertical state shown in FIG. 18 to the state shown in FIG. 17.
At the same time, the bottom slat 6b is lifted away from the drain surface 59.

Thereafter, when the top 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 biasing force of the coil spring 35. It descends together with the tilt slide 47 to its lower limit of 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. be done. In this manner, when the lift truck 43 is further pulled up, the slat 6 is folded in a forward-inclined state directly below the drive shaft 4, as shown in FIG. 4, as described above.

As described above, in this convolutional shutter 1, the lift truck 43 is raised and lowered by the drive belt 13 driven by the motor 5, and the pantolink 1 is raised and lowered based on the movement of the lift truck 43.
6 and the distance link 17, the operation is always reliable without stretching or loosening unlike strings or wires. When the shutter is opened by pulling up the slat 6, the slat 6 and the link supporting the slat are folded in a stack directly under the drive shaft 4, instead of being wound up by the winding shaft. Therefore, there is no need to provide a storage box for winding and storing the slats around the drive shaft, and it is sufficient to secure a space below the drive shaft 4 in which the slats 6 can be folded. Further, since the slat is held in the horizontal direction when it is raised or lowered, it can also be used as a sunshade if the motor 5 is stopped in this state. Furthermore, even when the slats 6 are being raised and lowered, a constant distance is always maintained between the slats 6, which is aesthetically pleasing.

On the other hand, when the slat 6 is lowered to the vicinity of the lowest limit, the slat 6 is rotated from the horizontal direction to the vertical direction, and from this state, the slat 6 is further lowered and the bottom gasket 58 of the bottom slat 6b is rotated.
is in pressure contact with the draining surface 59, and with the lowering of the bottom slat 6b being prevented and the rotation of the sprocket 9 being prevented, the pulley pipe 7 is slightly rotated and the bottom slat 6b is brought into contact with the draining surface by the biasing force of the torsion coil spring 10. 59. Therefore, the bottom gasket 58 of the bottom slat 6b is biased by the biasing force of the torsion coil spring 10.
Since it is reliably pressed against the drainage surface 59, it is possible to reliably prevent rainwater from entering. Furthermore, even if the drive belt 13 shrinks or stretches due to aging, this can be absorbed by the relative rotation of the pulley pipe 7 with respect to the sprocket 9.

Further, the length of the drive belt 13 is set so that when the bottom slat 6b is rotated in the vertical direction like the upper slat 6, there is still some distance between it and the draining surface 59. After being rotated in the vertical direction, the bottom slat 6b is further lowered as the lift truck 43 descends, and the bottom slat 6b is lowered from above and pressed into contact with the draining surface 59.
Therefore, the drainage surface 59 does not need to be a vertical surface precisely aligned with the lowering position of the bottom slat 6b.
Since it is sufficient to provide a horizontal surface or a slope close to the horizontal surface near the lowering of the bottom slat 6b, the installation is extremely easy. After the bottom slat 6b contacts the drainage surface 59, it is further pressed by the biasing force of the torsion coil spring 10, so that rain
It can reliably prevent wind from entering.

Furthermore, in this convolutional shutter 1, the first
As shown in Fig. 4, when the slat 6 is set horizontally, the tilt arm 56 that supports the slat 6 is formed at an angle of 51.6 degrees with respect to the horizontal line, and the slat 6 is folded into the upper part of the guide rail 2. Sometimes from the state shown in Fig. 14 to the state shown in Fig. 16.
The slat 6 is rotated to the state shown in the figure and tilted forward by 11.4 degrees. Therefore, in this state, the dimension in the front and back direction is smaller than when the slat 6 is oriented horizontally, and the slat storage portion can be made smaller.

Furthermore, as the angle of the tilt arm 56 with respect to the horizontal line becomes larger, the gap S shown in FIG. 16 becomes larger, so that the forward tilt angle when the slat 6 is folded also becomes larger. However, in this case, as the lift link 31 rises, the upward driving force acting on the second slat support shaft 57 becomes difficult to act as a rotational force on the tilt arm 56, and the motor 5 is required to rotate the slat 6. The load placed on it increases.

Furthermore, since the center of the first slat support shaft 55, which is the rotational fulcrum of the slat 6, coincides with the center of gravity P for the cross section of the slat 6, the slat 6 is rotated based on the rotation of the tilt arm 56 due to the operation of the link. can be rotated with a slight rotational force, and even after rotation, the rotational force based on the weight of the slat itself does not act on the first slat support shaft 55.
The slat 6 can be stably held at a predetermined angle.

In the above embodiment, the distance link 17 that expands and contracts in a zigzag shape is used as the first link, and the pantograph link 16 that expands and contracts in a pantograph shape is used as the second link. It is also possible to use links or a pantolink 16 as the first link and a distance link 17 as the second link.

Effects of the Invention As described in detail above, the present invention incorporates a slat elevating mechanism in the guide rails located on both sides of the slat, and supports the elevating mechanism in multiple stages at equal intervals on the elevating mechanism. In a shutter in which the opening/closing operation is performed by raising, lowering, and rotating each slat based on the operation of Unlike strings or wires, the slats do not stretch or loosen and can always be operated reliably, and when the slats 6 are pulled up to open the shutter, the slats are wound up on the winding shaft. Since the structure is such that the slats 6 and the links supporting the slats are stacked and folded, the slats 6 can be folded into a small space. Furthermore, in the present invention, by constructing at least one of the first and second links 17 and 16 as a pantograph that expands and contracts like a pantograph, the spacing between the slats 6 is always constant as the lift truck 43 moves up and down. Since the slats 6 are raised and lowered in this state, the spacing between the slats 6 is always maintained at a constant distance even during the raising and lowering of the slats 6, and an excellent effect that is aesthetically pleasing is exhibited.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a linkage mechanism of a convolutional shutter embodying the present invention, Fig. 2 is a front view showing the convolutional shutter, Fig. 3 is a sectional view showing the bearing portion of the drive shaft, and Fig. 4 Figure, 5th
Figures 6 and 7 are schematic diagrams showing the operation of the linkage mechanism, Figure 8 is a front view of the tilt cart, and Figure 9
The figure is a front view showing the operation of the tilt truck, Figure 10 is a front view of the tilt slide, Figure 11 is a cross-sectional view showing the tilt truck in the guide rail, and Figure 12 is the tilt slide and lift truck in the guide rail. FIG. 13 is a cross-sectional view showing the support structure for the uppermost slat, FIG. 14 is a front view showing the slat support structure by the slat holder, and FIG.
Fig. 5 is a plan view thereof, Fig. 16 is a front view showing the tilt arm with the slat tilted forward, Fig. 17 is a sectional view showing the connected state of the slat rotated in the vertical direction, and Fig. 18. is a cross-sectional view showing a state in which the spacing between the slats is further extended from the connected state;
FIG. 19 is a cross-sectional view showing the bottom slat in contact with the drainage surface. Guide rail...2, Slut...6, Drive belt...13, Pantolink as second link...16, Distance link as first link...17, Support link...18, First The slat support shaft...55, the second slat support shaft...
...57.

Claims (1)

[Claims] 1. A slat elevating mechanism is installed in guide rails located on both sides of the slat, and based on the operation of the elevating mechanism, the slats arranged in multiple stages above and below are raised, lowered and rotated to open and close them. In the shutter, a first link 17 is provided in the guide rail 2, a lift truck 43 is connected to the lower end of the first link 17, and the lift truck 43 is raised and lowered based on the operation of the drive device 13. By supporting the first link 17 vertically and contractably along the guide rail, the second link 16, which expands and contracts as the first link expands and contracts, is connected to the first link by the support link 18. 17, at least one of the first and second links 17, 16 is constructed of a pantograph that expands and contracts like a pantograph, and each slat 6 has first and second links at both ends. Slat support shafts 55 and 57 are provided, and the first slat support shaft 55 is supported by the first link 17, and the second slat support shaft 5 is supported by the first link 17.
7 is supported by the second link 16, the lowermost slat 6b of each of the slats 6 is connected to the lift truck 43, and the uppermost slat 6a is connected to the lift truck 43.
is connected to the tilt cart 21 and positioned at a fixed point, so that as the lift cart 43 moves up and down, the slats 6 can be raised and lowered with a constant interval between the slats 6, and the second link 16 is connected to the first link 17. A folding shutter characterized by being rotatably supported by the rotation of the shutter. 2 The first link is a distance link 17 that expands and contracts in a zigzag shape up and down, and the second link is a panda link 1 that expands and contracts in a pantograph shape up and down.
6. The convolutional shutter according to claim 1, which is: