JPH0544476Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a support structure for a shutter panel that is connected by a chain meshing with a panel drive sprocket to open and close building entrances, windows, etc.

[Conventional technology]

In the conventional shutter panel of this type, pins integrally protruding from both sides of the upper part are inserted into and engaged with the hollow pins of the chain so as to be rotatable and movable in the thrust direction, thereby attaching a plurality of panels to the chain. The hollow pin has a support structure connected in a series, and a protruding roller (guide roller) is rotatably provided on the protruding portion of the hollow pin on the opposite side of the panel. Then, the chain is extended across the inside of the storage box and the grooves of a pair of left and right guide rails that are arranged on both sides of openings such as entrances and exits of buildings and have storage boxes at the top. By engaging the panel drive system sprocket in the storage box, the guide roller is engaged in the groove of each guide rail and held so that it can be moved to the support rail, and the chain is connected to the guide rail by the panel drive system sprocket. By moving the panels up and down along the guide rails, the panels are held in the same vertical plane between the guide rails, and the guide rollers move onto the support rails to suspend each panel in a folded and parallel state. It is designed so that it can be moved to a storage position.

[Problem that the invention attempts to solve]

In the support structure of such a conventional shutter panel, chain connecting pins are integrally protruded from both sides of the upper part of the panel itself, and these pins are connected to a normal chain through a hollow pin at a partially bent part so that the pin can freely rotate and thrust. Since the pins are inserted and engaged so as to be movable in the direction, the diameter of the pin cannot be increased. Therefore, if the weight per panel is light, there will be no problem in terms of pin strength, but when the weight increases, the pin diameter must be increased to increase the pin strength. In this case, there was a problem that the above pin strength could not be met unless the size of the chain itself was increased. In addition, when an error occurs within an allowable range in the width of the mutual spacing between the pair of left and right guide rails on which the panel is mounted via the chain and guide roller as described above, the pin is set to absorb the error. The movement is adjusted in the thrust direction relative to the hollow pin of the chain, but the pin is inserted into the hollow pin of the link width of the chain and the guide roller part protruding from the chain, so that the movement stroke is adjusted to the length of the hollow pin. Therefore, in order to reliably absorb and correct the error when it becomes large by adjusting the movement of the pin,
It is necessary to increase the length of the hollow pin. However, increasing the length of the hollow pin increases the distance from the guide roller to the end of the panel from which the pin protrudes, which goes against the market's desire for a compact design. There were also some problems. This idea was made to solve the problems mentioned above, and it is possible to reliably absorb errors within the allowable range of the gap width between the left and right guide rails, improve panel shutter assembly work efficiency, and improve panel shutter assembly. To provide a support structure for a shutter panel in which the strength of a long pin for suspending a panel can be increased in accordance with the weight, the long pin can be easily attached to a normally configured chain, and the long pin can be reliably engaged with a panel drive system sprocket. The purpose is to provide.

[Means to solve the problem]

The support structure of the shutter panel of this invention has a chain configuration that meshes with the panel drive system sprocket and suspends multiple panels, and can be bent and rotated alternately with multiple roller link plates using link pins of the same pitch. The connected portion of the roller link plate and the pin link plate, which is connected to the panel and serves as the panel attachment point, is connected by a long pin that also serves as a link pin of the same pitch as each of the link pins that passes through that portion, and the long pin is constructed by integrally coaxially forming a panel mounting shaft with the largest diameter, a link connecting shaft with a smaller diameter than the panel mounting shaft, and a roller mounting shaft with an even smaller diameter than the link connecting shaft. The link connecting shaft portion is inserted into the connected portion of the roller link plate and the pin link plate, which are the panel mounting points, and a guide roller for suspending the panel is rotatably attached to the roller mounting shaft portion. At the same time, the panel mounting shaft portion is inserted and connected to both sides of the panel so as to be rotatable and movable in the thrust direction.

[Effect]

In this invention, the long pin for suspending the panel from the chain meshed with the panel drive system sprocket is rotatable with respect to both sides of the panel and movable in the thrust direction, so that the panel type shutter device can During assembly, the long pin inevitably moves in the thrust direction relative to the panel in accordance with the mutual spacing between the left and right guide rails. Therefore, even if there is an error in the width of the interval between the two guide rails, if this error is within the allowable range in terms of design, this error can be reliably absorbed by moving the long pin in the thrust direction. can. In particular, the above-mentioned long pin has a stepped pin configuration with three different pin diameters (large, medium, and small) on the same axis, and the largest diameter shaft becomes the panel mounting shaft and is attached to both sides of the panel. The medium-diameter shaft portion serves as a link connecting shaft portion and passes through the connected portion of the roller link plate and pin link plate, and the link connecting shaft portion has the same diameter as other ordinary link pins. Therefore, the strength of the long pin corresponding to the weight of the panel can be increased by using the panel mounting shaft portion having the largest diameter without changing the chain size. In addition, as mentioned above, the link connecting shaft, which has a smaller diameter than the panel mounting shaft, can be formed to have the same diameter as other normal link pins. The long pin can be easily attached to the normally configured chain by simply inserting the link connecting shaft. In this case, the link connecting shaft of the long pin has the same pitch as the other link pins, so the chain meshes correctly with the panel drive system sprocket. Therefore, in the process of moving the chain by driving the sprocket, The panel can be smoothly moved up and down at all times without the risk of the chain rattling.

【Example】

An embodiment of this invention will be described below based on the drawings. In FIG. 1, 1 is a shutter panel, 2 is a panel holding frame, and this panel holding frame 2 consists of an upper frame 2a, a lower frame 2b, and vertical frames 2c on both sides.
and an intermediate frame 2d, and the panel 1 is mounted on the panel holding frame 2. In the panel 1, both ends of an upper frame 2a of the panel holding frame 2 are connected to a part of the chain 4 via long pins 3. As shown in FIGS. 2 and 3, the chain 4 includes a pair of left and right roller link plates 5, a hollow cylindrical bush 6 press-fitted between both ends of these roller link plates 5, and a hollow cylindrical bushing 6. A roller 7 is loosely fitted around the outer periphery of the bush 6 so as to be freely rotatable.
, a link pin 8 rotatably inserted into the bush 6, and a pin link plate 9 disposed outside the roller link plate 5 and caulked to both ends of the link pin 8. The roller link plate 5 and the plurality of pin link plates 9 are alternately connected by the link pins 8 at chain pitch intervals so as to be freely bendable and rotatable. In this chain 4, a long pin 11 is provided via a bush 10 at a position that serves as an attachment support portion (panel attachment location) of the panel 1. The bush 10 has a hollow cylindrical shape, has the same outer diameter as the roller 7, and is press-fitted between the ends of the roller link plate 5. The long pin 11 has a panel mounting shaft portion 11a having the largest diameter, a link connecting shaft portion 11b having a smaller diameter than this, and a roller mounting shaft portion 11c having an even smaller diameter than this link connecting shaft portion 11b, which are integrally formed on the same axis. The structure is as follows. Therefore, the long pin 11 has a stepped pin configuration with three different pin diameters: large, medium, and small. In such a long pin 11, a link connecting shaft portion 11b having an intermediate diameter is inserted into the bush 10, and the end portion of the pin link plate 9 is fixed to the link connecting shaft portion by caulking. As a result, the roller link plate 5 and the pin link plate are connected so as to be able to bend and rotate freely, and the bush 10 and the roller 7 have the same dimensions. Therefore, the chain 4 can be smoothly operated using a standard panel drive system sprocket without using a special panel drive system sprocket. In addition, a projecting roller (guide roller) 12 for suspending the panel is attached to the roller mounting shaft portion 11c having the minimum diameter.
is fitted in such a way that it can rotate freely. This guide roller 12 has a C-shaped retaining ring 13 attached to the outer end of the roller attachment shaft 11c.
This prevents it from coming off. The panel mounting shaft portion 11a having the largest diameter
Both upper sides of the panel 1 are supported via a long pin support bracket 14 and a long pin support bush 15, respectively. The long pin support bracket 14 is fixed to both ends or over the entire length of the upper frame 2a of the panel holding frame 2. The long pin support bush 15 is formed into a hollow cylindrical shape, and its inner diameter d' is slightly larger than the outer diameter d of the panel mounting shaft portion 11a of the long pin 11. This long pin support bush 15 is inserted and fixed into the long pin support bracket 14 by means such as press fitting. The panel mounting shaft portion 11a of the long pin 11 is inserted into the long pin support bush 15 so as to be rotatable and movable in the thrust direction, thereby suspending the panel 1. Furthermore, the long pin support bracket 14 has the following features:
Since the panel 1 is attached from one end toward the other end, the length of the long pin 11 can be made sufficiently long, and the range of movement in the thrust direction can be increased.
It can be made larger while keeping it compact. Furthermore, a panel roller 28 (see FIGS. 5 and 8) is rotatably supported at the lower end of the panel holding frame 2 of the panel 1. Note that the long pin support bracket 14 is
It may be formed by any means such as bending or drawing of a metal plate, die casting or injection molding. Further, in the illustrated example, the long pin support bracket 14 and the long pin support bush 15 are shown separately for pairing, but a structure may be adopted in which the panel mounting shaft portion 11a of the long pin 11 directly contacts the long pin support bracket 14. In the above, the panel 1 is assembled into a panel type shutter device shown in FIGS. 5 to 9. This shutter device includes a pair of left and right guide rails 16 arranged on both sides of an opening such as an entrance or window of a building, and a panel storage box 17 connected to the upper end of these guide rails 16. There is. Inside this box 17, each guide rail 16
A support rail 18 for storing a panel, the front end of which is connected to the upper end and the rear end of which is inclined downward, and a chain tip guide rod 19 which is disposed above the support rail 18 with the rear end of which is inclined downward. A panel drive system sprocket (hereinafter simply referred to as sprocket) 20 that engages with the chain 4 and drives the chain 4 up and down.
, a plurality of sprockets 29 to 31 that interlock the panel lifting means 21 and the sprocket 20, and the panel driving means 21 are arranged. As shown in FIG. 5, the chain tip guide rod 19 is movably fitted into the tip of the chain 4, so that when the panel 1 is stored in the box 17, the chain 4 moves together with the panel 1. , the chain 4 will not hang down or become entangled. The panel driving means 21 drives the sprocket 20 in forward and reverse rotation via endless chain belts 22 and 23. The chain 4 meshes with the sprocket 20, and the chain 4 moves between the guide rail 16 and the box 17. In this case, by moving the long pin 11 of the chain 4 in the thrust direction with respect to the panel holding frame 2, the assembly width error between the guide rails 16 is absorbed. Further, a chain slack sensing device 24 is provided near the upper end of the guide rail 16 to detect slack in the chain 4 and detect further folding or clogging of the panel 1 within the guide rail 16. Further, near the sprocket 20, there is a chain separation plate (chain/sprocket mesh separation device) 25 for contacting the chain 4 during lifting and lowering to reliably separate the chain 4 from the sprocket 20.
26 have been installed. On the other hand, near the entrance and exit of the box 17, a panel guide 27 is provided for smoothly guiding the lower end of the panel 1 into and out of the box 17. Therefore, the chain 4 is shown in FIGS. 5 and 7 (the two-dot chain line actually exists in a symmetrical position on the opposite side to the panel axis, and is shown in a symmetrical position for convenience of illustration) As shown in FIG. 2, it is arranged along the panel guide 27, and its tip is loosely fitted into the chain tip guide rod 19 as described above. Next, the operation will be explained. The storage operation of the panel 1 is performed by driving the sprocket 20 in the panel storage direction with the output of the panel driving means 21.
The chain 4 meshed with the sprocket 20 rises and the panel 1 is housed in the box 17. In this case, each panel 1 is pulled up in sequence with the chain 4, but when the upper end of the panel 1 reaches the sprocket 20, the tip of the panel 1 moves in a circular motion along the pitch circumference of the sprocket 20 together with the chain 4. and is guided toward the support rail 18. On the other hand, the panel roller 28 at the lower end of the panel 1 is rotationally guided obliquely upward by the panel guide 27, and advances into the box 17 in a state in which horizontal swing is prevented. In this way, the panel 1 is smoothly removed from the moving path of the succeeding panel, so that the ascending of the succeeding panel 1 is not hindered. Thereafter, the guide roller 12 rolls on the support rail 18. At this time, if the chain 4 and the sprocket 20 are abnormally engaged, the chain 4 will come into contact with the chain separation plate 25, so the chain 4 will be reliably separated from the sprocket 20, so that the above-mentioned storage operation can be performed at all times. It is done smoothly. Conversely, in the operation of drawing out the panels 1, the chain 4 is fed out via the sprocket 20 by starting the panel drive means 21 to rotate in the reverse direction, so that each panel 1 is drawn out in sequence, contrary to the above-mentioned operation.

[Effect of the idea]

As described above, according to this invention, the long pin for suspending the panel from the chain meshed with the panel drive system sprocket is made rotatable relative to both sides of the panel and movable in the thrust direction. When assembling the type shutter device, the long pin can be naturally moved in the thrust direction relative to the panel in accordance with the mutual spacing between the left and right guide rails. Therefore, even if there is an error in the width of the interval between the two guide rails, if this error is within the allowable range in terms of design, this error can be reliably absorbed by moving the long pin in the thrust direction. can. In particular, the above-mentioned long pin has a stepped pin configuration with three different pin diameters (large, medium, and small) on the same axis, and the largest diameter shaft becomes the panel mounting shaft and is attached to both sides of the panel. The medium-diameter shaft part becomes the link connecting shaft part and passes through the connected part of the roller link plate and pin link plate, so the link connecting shaft part has the same diameter as other normal link pins. Therefore, without changing the chain size, the strength of the long pin corresponding to the weight of the panel can be increased by using the panel mounting shaft portion having the largest diameter. In addition, as mentioned above, the link connecting shaft, which has a smaller diameter than the panel mounting shaft, can be formed to have the same diameter as other normal link pins. The long pin can be easily attached to the normally configured chain by simply inserting the link connecting shaft. In this case, the link connecting shaft of the long pin has the same pitch as the other link pins, so the chain meshes correctly with the panel drive system sprocket. Therefore, in the process of moving the chain by driving the sprocket, The panel can be smoothly moved up and down at all times without the risk of the chain rattling. In addition, by making the roller mounting shaft of the long pin the minimum diameter, it is possible to use a small guide roller attached to this roller mounting shaft. There is no need to increase the size of the long pin, and since the long pin is inserted into the chain link from the roller attachment shaft portion with the smallest diameter when attaching the long pin to the chain link, the long pin can be easily and efficiently inserted into the chain link.

[Brief explanation of the drawing]

Fig. 1 is a front view of a shutter panel according to an embodiment of this invention, Fig. 2 is an enlarged front view showing a main part of the support structure of the shutter panel in cross section, and Fig. 3 is a view of the roller chain in Fig. 2. 4 is a cross-sectional enlarged front view of the main part of the roller chain in FIG. 2, FIG. 5 is a schematic sectional view of the panel shutter device, FIG. 6 is a schematic exploded perspective view of the panel drive system, FIG. 7 is a partial cross-sectional view showing the meshing state of the sprocket and chain, FIG. 8 is a front view showing a partially broken panel, and FIG. 9 is a cross-sectional view taken along the line A--A in FIG. 8. 1... Panel, 4... Chain, 5... Roller link plate, 6... Bush, 7... Roller,
8...Link pin, 9...Pin link plate,
DESCRIPTION OF SYMBOLS 11...Long pin, 11a...Panel attachment shaft part, 11b...Link connection shaft part, 11c...Roller attachment shaft part, 12...Guide roller.

Claims (1)

[Claims for Utility Model Registration] (1) In a support structure for a shutter panel that is connected to a chain meshing with a sprocket of a panel drive system and driven to open and close, the chain comprises a pair of left and right roller link plates, and a pair of left and right roller link plates. a bush connecting both ends of the roller link plate; a chain roller rotatably fitted loosely around the outer periphery of the bush; a link pin rotatably inserted into the bush; and a link pin rotatably inserted into the bush; a plurality of roller link plates and a plurality of pin link plates are alternately connected by the link pins of the same pitch in a bendable and rotatable manner; The connected portion of the roller link plate and the pin link plate, which is the panel attachment point, is connected by a long pin that passes through that portion and also serves as a link pin of the same pitch as each of the link pins, and the long pin is , a panel mounting shaft with the largest diameter and the same overall length, a link connecting shaft with a smaller diameter than this panel mounting shaft, and a roller mounting shaft with an even smaller diameter than this link connecting shaft are integrally formed on the same axis. The link connecting shaft is inserted into the connected portion of the roller link plate and the pin link plate, which are the panel mounting points, and the roller mounting shaft is provided with a guide for suspending the panel. The roller is rotatably mounted, and the panel mounting shaft is inserted into and connected to a bush for supporting a long pin formed with openings at both ends of the upper part of the panel so as to be rotatable and movable in the thrust direction. Support structure for shutter panels. (2) A bush into which the link connecting shaft of the long pin is inserted is provided between the left and right roller link plates where the panel is attached.
The support structure for a shutter panel according to claim 1, wherein the outer diameter of the bushing is set to be approximately the same as the outer diameter of the other chain rollers.