JPH0726557Y2 - Folding shutter drive device - 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 shutter are connected by connecting members such as a link mechanism to suspend and support a large number of vertical steps, and the connecting members are raised and lowered in guide rails on both sides. By moving the slat up and down,
There is one in which each slat can be angle-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, a chain is used to connect the driving force of the driving means such as a motor to the connecting member. However, since only the torque in the pulling direction can be transmitted in the chain, in order to move the connecting member in the vertical direction, it is necessary to endlessly stretch the chain on the sprocket provided above and below in the guide rail. There was a point.

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 in which each mechanism is supported and each slat is moved up and down and rotated based on the expansion and contraction of the linkage mechanism to open and close, a drive belt 13 molded of synthetic resin is provided in the guide rail 2 with a belt groove. 13a is supported so as to be movable only in the vertical direction, and the drive belt 13 is mounted on a sprocket 9 which is rotationally driven by a drive means so that the drive belt 13 can be driven, and a linkage mechanism 15 is connected to one end of the drive belt 13. A plurality of protrusions 12 are provided on the outer periphery of the sprocket 9 at regular intervals, and the drive belt 13 is provided with the sprocket along its length direction. It has a configuration forming the engaging hole 14 at a predetermined interval to be engaged with the projection 12 of the bets 9.

(Operation) By the above means, the drive belt 13 can transmit the driving force in both the pushing direction and the pulling direction of the linkage mechanism 15. Further, since the drive belt 13 moves up and down with the engagement hole 14 formed in the drive belt 13 engaged with the protrusion 12 provided on the outer periphery of the sprocket 9, the drive belt 13 is moved by the weight of the linkage mechanism 15 and the like. There is no possibility of misalignment.

When the drive belt 13 is made of polyester resin, it is extremely excellent in the following points as compared with the case of using polyamide resin, acrylic resin, or the like. That is, since the polyester resin has high strength and elongation, the drive belt 13 itself hardly breaks or stretches due to weight. Also, since the elastic recovery force against elongation is large, the original length is immediately restored even if it is once expanded. Furthermore, since it has a low water absorption, it is useful in an environment with high humidity.

(Embodiment) Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. As shown in FIG.
A pair of guide rails 2 are erected on both sides, bearings 3a, 3b are fixed to their upper ends, and a drive shaft 4 is rotatably supported by the bearings 3a, 3b. A motor 5 is fixed to one of the bearing portions 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.
The pulley pipe 7 is rotated via the. 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 pulley pipe 7 on the other side.

A torsion coil spring 10 is provided between the spring receiver 8 and the sprocket 9, and one end 11a thereof is supported and fixed to the spring receiver 8 and the other end 11b 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 is engaged with the projections 12 of the sprocket 9 by engaging holes 14 formed at regular intervals, and is vertically moved in the guide rail 2 as the sprocket 9 rotates. It The drive belt 13 is made of 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 tensile force along the moving direction of the drive belt 13. There is.

Therefore, when the motor 5 is activated, 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 activated while the movement of the drive belt 13 is blocked. , The pulley pipe 7 is rotated in a state where the sprocket 9 is prevented from rotating, so that the rotational force thereof is the torsion coil spring 10.
Is absorbed and stored, and the urging force acts on the sprocket 9 in the same direction.

The other bearing portion 3b has the same structure as the above 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.
The panto link 15 is provided with a large number of link rods 16 which are vertically expandable and contractable in a pantograph shape. As shown in FIG. 8, a supporting shaft 18 of a first slat holder 17 is rotatably fitted and inserted at an intersecting portion 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 action of the long hole 20 connects the ends of the link rods 16 with some play. In the link mechanism provided in the other guide rail 2, as shown in FIG. 9, the link rod 16 is connected in a cross shape by the support shaft 23 of the second slat holder 22.

As shown in FIGS. 8 and 9, the support shafts 18 and 23 of the first and second slat holders 17 and 22 are formed with fitting portions 18a and 23a, respectively, by cutting the tip portions thereof in the longitudinal direction. The fitting portions 18a, 23a are formed with locking holes 24 in the radial direction.

One end of a tilt arm 25 is fitted to the fitting portions 18a, 23a of the support shafts 18, 23 penetrating each link rod 16 of the panto link 15. 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 fitting hole 26 that penetrates the fitting hole 26 is formed. A stop hole 27 is formed. And
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 shafts 18 and 23. The first and second slat holders 17 and 22 are integrally fitted so that the tilt arms 25 rotate and the first and second slat holders 17 and 22 rotate.

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 vertically movably supported by a tilter guide 30 disposed in the guide rail 2 over substantially the entire length. ing. That is, the tilter guide 30 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 of the tilter guide 30 along the entire length in the longitudinal direction, and the engaging portion 29 is formed in the tilter guide 30. It is movably supported in the longitudinal direction.

As shown in FIGS. 1 and 4, the tilter guide 30
The upper end of a support lever 32 is rotatably supported at several positions above and below the support lever 22, and the lower end of the support lever 22 is rotatably supported by the guide rail 2. Therefore, as shown in FIGS. 4 and 7, the tilter guide 30 is slidable in the front-rear direction while rotating in the guide rail 2 with the lower end of the support lever 32 as a rotation fulcrum. Further, as shown in FIG. 1, the tilter guide 30 is a coil spring.
It is connected to the guide rail 2 via 33 and is always held at the position 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 34 is formed in a substantially triangular plate shape, a first top portion thereof is rotatably supported by the guide rail 2 by a shaft 35, and a second top portion thereof is rotatably supported by the shaft 36 at the lower end of the tilter guide 30. It is supported and an engaging shaft 37 is projected at the third top. The distance between the shafts 35 and 36 provided on the first and second tops is the same as the distance between the pivots at both ends of the support lever 32.
When 34 is rotated in the direction of arrow A in Fig. 6, the tilter guide
Numeral 30 is adapted to move within the guide rail 2 without being rotated about the shaft 35 and the lower end of the support lever 32 as a fulcrum of rotation against the urging force of the coil spring 33.

Uppermost slat holder in both guide rails 2
The support shafts 18, 23 of 17, 22 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 FIG. 1 and FIG.
The pair of slide runners 39 is rotatably supported on the upper and lower sides, and the slide runners 39 are formed in the opening groove of the guide rail 2.
A first guide groove 40 provided on one side of 2a is supported so as to be vertically movable. Further, one side of the slide carriage 38 is bent toward the inner side surface of the guide rail 2 to form an abutting piece 41, and the top limiter 42 is provided on the inner side surface of the guide rail 2 on the movement locus of the abutting piece 41. It is fixed. Therefore, as shown in FIGS. 4 and 5, the slide carriage 38 can move up and down along the first guide groove 40 with the lower limit of movement being the position where the contact piece 41 contacts the top limiter 42. .

The support shafts 18 and 23 of the slat holders 17 and 22 at the bottom are link rods 16
And a lift truck 43 that is connected to the tilt arm 25 and
Are linked to. 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. In addition, as shown in FIG. 12 and FIG.
One end of the drive belt 13 which 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 guide rail 2. Therefore, the lift carriage 43 is vertically moved along the second guide groove 45 along with the drive belt 13 which is 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 an upright piece 48. When the lift carriage 43 descends to the position of the tilt lever 34, the bottom piece 47 first comes into contact with the engagement shaft 37 as shown in FIG. When the lift carriage 43 is further lowered, the tilt lever 34 is rotated in the direction of arrow A using the shaft 35 as a rotation fulcrum against the biasing force of the coil spring 33 attached to the tilter guide 30. As shown in FIG. 7, the engaging shaft 37 eventually becomes a vertical piece 48.
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 projection 49 has a stepped portion 49a formed in the middle portion so as to project in a direction away from each other, and the tip ends project in a direction 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 gasket 50 made of synthetic resin 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 and sealed. It is edge 52.

As shown in FIG. 8, a holder main 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 main 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. There is. Therefore, in the first slat holder 17, the holder main body 53 can be inserted from the side of the slat 6 between the locking projections 49.

As shown in FIG. 9, the second slat holder 22 is formed in a substantially rectangular parallelepiped shape with a size 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 narrow 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 a metal plate having elasticity into a groove shape substantially equal to the interval and height of the locking projection 49, The upper edge portion is bent inward to form a hook portion 57. Then, the holder main body 55 of the second slat holder 22 is inserted from below the slat 6 between the locking projections 49, and in this state, the slat clip is inserted from below the holder main body 55.
When 56 is fitted to the outer side of both locking projections 49 of the slats 6,
As shown in FIG. 15, since the hook portion 57 engages with the step portion 49a of the locking projection 49, the slat 6 is prevented from coming off the second slat holder 22.

As shown in FIG. 18, a bottom gasket 58 is fitted to the front end of the bottom slat 6a located at the lowest stage of the slat 6, that is, the lower end of the bottom slat 6a in the vertical state shown in FIG. It is designed to come into close contact with the drainage surface 59 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 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 states shown in FIGS. Slat holder
The locking ridge 49 on one side of the slat 6 is fitted to the holder main body 53 of 17 from the side as shown in FIG. 14, and on the other side of the slat 6 to the holder main body 55 of the second slat holder 22. The locking projection 49 of the slat 6 is fitted from above, 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 fitted to the first slat holder 17 from the side thereof so that the one side of the slat 6 is immovably supported. Since the other side can be fitted into the second slat holder 22 from above and fixed by the slat clip 56, 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. Further, since the slat 6 and the holder main body 53 of the first slat holder 17 are fitted with a slight gap, both guide rails 2
Even if there is some error in the dimension between them, it can be absorbed in the gap.

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 operates 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 always in a horizontal state. The space expands and contracts while being held at.

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 slide carriage 38 is located at the lower limit of movement with its abutment piece 41 abutting against the top limiter 42.

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

In this way, the panto link 15 is contracted to the limit, and when the lift truck 43 is further pulled upward from that state, the link rod 16 at the lowermost stage supported by the lift truck 43 and the link arm above the link rod 16 are supported by the tilt arm 25. Since the tilt arm and the tilt arm are lifted, each slat 6 as shown in FIG.
Also, each link is pushed up by the lift carriage 43, and accordingly, the slide carriage 38 is also pushed up and separated from the top limiter 42, and each slat 6 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 C in FIG. 4 by the motor 5 to close the folding shutter 1, the lift carriage 43 descends, and the folded slats 6 and linkage mechanism are integrated with the slide carriage 38. To descend. When the abutment piece 41 of the slide carriage 38 abuts on the top limiter 42, further lowering of the slide carriage 38 is prevented, and when the lift carriage 43 further descends in this state, FIG. 5 and FIG. As shown in FIG. 5, the panto link 15 extends, and the slats 6 are 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 carriage 43 contacts the engagement shaft 37 of the tilt lever 34. When the lift carriage 43 is further lowered from this state, the engaging shaft 37 is pushed downward by the bottom piece 47 of the guide piece 46, so that the tilt lever 34 rotates in the direction of arrow A in FIG. Be moved. Then, the tilter guide 30 is rotated in the same direction against the biasing force of the coil spring 33 and slides to the opposite side with respect to the panter link 15 as shown in FIG. 7, so that the tilt arm 25 and the slat holders 17, 22 are provided. Each slat 6 is rotated in the same direction in the vertical direction via. Then, as shown in the figure, the engagement shaft 37 moves from the bottom piece 47 while contacting the upright piece 48, and the slats 6
Is vertically rotated, the lift carriage 43 is further lowered to further open the spaces between the slats 6 and then the operation of the motor 5 is stopped.

That is, when each slat 6 is vertically rotated by the rotation of the tilt lever 34, 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. Contact. Therefore, the mounting position of the tilt lever 34 is just the first position if the slat 6 is rotated in the vertical direction.
When the slat spacing that is the state shown in FIG. 16 is secured, the lift truck 43 is set to a position where it can be rotated downward. 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 contact portion 51 of the lower slat, and eventually sealed. Edge 52
Stick to. At this time, as shown in FIG. 18, the bottom gasket 58 of the bottom slat 6a is pressed against the draining surface 59,
At this point, the slats are prevented from further descending, and the extension of the panto link 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.

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 6a is drained. It is kept pressed against the surface 59.

When the shutter closed as described above is opened, the motor 5 is operated to rotate the drive shaft 4 in the opposite 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 so that the bottom slat 6a is separated from the draining surface 59, and the engaging shaft 37 of the tilt lever 34 is erected on the guide piece 46 based on the rise of the lift carriage 43. It moves from the piece 48 along the bottom piece 47 and rotates based on the urging force of the coil spring 33, and 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 by the drive belt 13 driven by the motor 5 and expanding and contracting the pantolink 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 movable up and down 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 the top limiter 42, and when the slat 6 is folded, the slide carriage 38 rises to move the uppermost slat up and down. The slat 6 is folded under the slat 6 when it is pulled up from the time.

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 the 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. If the bottom stroke slat 6a is lowered to the lowest limit due to the incompatibility between the lift stroke of the shutter and the height of the water drainage surface 59, a gap is still formed between the bottom slat 6a and the water drainage surface 59, or the gasket contact portion 51 of each slat 6 is in contact. If the spacing between the slats does not extend until they abut the sealing edge 52 of the adjacent slats, the top limiter 42
The problem can be solved by appropriately changing the mounting position of.

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 to rotate the tilt arm 25 and the slat. 6 is rotated in the same phase. That is, the lift truck 43 has 6 slats.
The guide pieces when they are opened horizontally to a specified distance
46 abuts on the engaging shaft 37 of the tilt lever 34 and pushes down the engaging shaft 37 with the bottom piece 47, and when the tilt lever 34 is rotated by the operation thereof and each slat 6 is rotated in the vertical direction, it is engaged. axis
The lift carriage 43 further descends in a state where the 37 moves along the upright pieces 48 and the slats 6 are held in the vertical direction, and the spacing between the slats 6 is further extended to lower the bottom slats 6a. It 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 blocked, and the pulley pipe 7 is slightly rotated so that 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 reliably pressed against the draining surface 59 by the biasing force of the torsion coil spring 10, it is possible to reliably prevent the 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. Lift truck after being rotated in the direction
The bottom slat 6a is pressed down from above with respect to the draining surface 59 as the lowering of 43 lowers. Therefore, the draining surface 59 does not have to be a vertical surface that matches the descending position of the bottom slat 6a, and a horizontal surface or an inclined surface close to it may be provided near the descending position of the bottom slat 6a, so that the installation is extremely easy.

Further, when the slat 6 is rotated from the vertical direction to the horizontal direction, the tilt lever 34 and the tilter guide 30 operate in the opposite manner to that described above based on the lift of the lift carriage 43.

Therefore, the folding shutter 1 automatically raises and lowers the slat 6 based on the movement of the lift carriage 43 and presses the bottom slat 6a against the draining surface 59 automatically and continuously by a common driving means by the motor 5. , Its 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 that can transmit pressing force and tensile force along the direction,
The lift truck can lift the pressing force and the pulling force only by mounting the drive belt 13 on one sprocket 9 without making it endless.
The drive belt 13 itself may be short enough to be commensurate with the travel distance of the lift carriage 43, and can be reliably transmitted to the lift carriage 43.

As described above in detail, in the present invention, since the driving force can be transmitted by the driving belt 13 in both the pushing direction and the pulling direction of the linkage mechanism 15, it is not necessary to make the driving belt 13 endless. The drive belt 13 can be driven by each sprocket 9, and the drive belt 13 can be driven in a state where the engagement hole 14 formed in the drive belt 13 is engaged with the protrusion 12 provided on the outer periphery of the sprocket 9. Since it moves up and down, the drive belt 13 is not displaced due to the weight of the linkage mechanism 15 or the like. Therefore, an excellent effect that the driving force can be surely transmitted by the inexpensive and lightweight driving belt 13, which is a synthetic resin, is exhibited.

[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. Fig. 10 is a front view of the tilt lever portion, Fig. 11 is a plan view of the slide carriage portion, Fig. 12 is a front view of the lift carriage portion, and Fig. 13 is the same plan view.
FIG. 14 is a cross-sectional view of one slat support, FIG. 15 is a cross-sectional view of the other slat support, FIG. 16 is a cross-sectional view showing the connected state of the slats rotated in the vertical direction, and FIG. 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 in which the bottom slats are in contact with the draining surface. Guide rail 2, motor 5, slat 6, sprocket 9, protrusion 12, drive belt 13, belt groove 13a, engagement hole 14,
Panta Link 15.

Claims (2)

[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 upper and lower slat stages are supported by the linkage mechanism. In the shutter that is moved and opened / closed, the drive belt (13) molded of synthetic resin is supported so as to be movable only in the vertical direction along the belt groove (13a) provided in the guide rail (2), The drive belt (13) is mounted on a sprocket (9) which is rotationally driven by a drive means so that the drive belt (13) can be driven, and a linkage mechanism (15) is provided at one end of the drive belt (13).
And a plurality of protrusions (12) are provided on the outer periphery of the sprocket (9) at regular intervals, and the drive belt (13) has protrusions () of the sprocket (9) along its length direction. A drive device for a folding shutter, characterized in that engagement holes (14) are formed at regular intervals so as to be engaged with (12). 2. The drive device for the folding shutter according to claim 1, wherein the drive belt (13) is formed of a polyester resin.