JPH017835Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for preventing detachment of a roller chain for connecting panels in a panel shutter, and more specifically, when the shutter is lowered under its own weight, the roller chain and guide sprocket that connect the panels in the vertical direction are prevented. This invention relates to a disengagement prevention device for a panel connecting roller chain, which properly maintains the meshing state with the roller chain without disengaging the panel, so that the weight of the panel can always be lowered smoothly and reliably.

Conventionally, in this type of panel shutter, as shown in Fig. 4, each panel c, c... The extra length d' of a roller chain d connected in the vertical direction is engaged with the opening of the building in conjunction with the rotation of the induction sprocket b. The end of the extra length d' of the roller chain d is the free end, and there is no roller chain holding plate above the axis of the induction sprocket, so when the shutter is lowered by its own weight during a power outage or as necessary, , the roller chain d is damaged by the vibrations and shocks that occur when panel c descends.
There was often an inconvenience that the extra length d' of the sprocket would come off from the guide sprocket b. For this reason, there were drawbacks such as the subsequent opening and closing operation of the shutter becoming impossible and restoration work not easy.

The present invention was devised in view of the above-mentioned actual situation and to eliminate the drawbacks of the conventional technology. A roller chain holding plate curved along the guide sprocket is installed so as to be adjustable in the vertical direction to form a gap path between the guide sprocket and the roller chain that allows the roller chain to pass through. By installing a passage prevention device to the gap path at the end of the extra length, the phenomenon of the roller chain coming off from the induction sprocket, which conventionally occurs when the shutter is lowered by its own weight, can be prevented from passing between the roller chain holding plate and the gap path. A panel shutter that works together with the passage blocking device to prevent this from happening, maintains the proper engagement between the roller chain and the induction sprocket, and allows the weight of the panel to fall smoothly and reliably at all times. An object of the present invention is to provide a device for preventing detachment of a roller chain for connecting panels.

The above objects of the present invention will become more clear by describing the embodiments shown in the drawings.

That is, in FIGS. 1 to 3, 1 is a panel shutter, and the panel shutter 1 has a plurality of long panels 2 arranged at required intervals in the vertical direction. Bearing members 4 at both ends
A roller chain 6 is attached to a roller shaft 5 which is inserted through a roller chain 6, which is pivotally connected in a continuous manner. The roller shaft 5 is attached to the outer link plate 6a of the roller chain 6 at a position eccentric from the center thereof in the closing direction of the shutter 1, and the outer link plate 6a is attached to the front and rear of the roller shaft 5. The roller shaft 5 is connected to the inner link plate 6c and extends over the rollers 6b, 6b.
is supported.

8 is a guide rail installed vertically on both the left and right sides of the building opening, 9 is a shutter storage case connected to the upper end of the guide rail 8, and the left and right side plates 10 of the shutter storage case 9 are An induction sprocket 11 is coaxially supported on the same axis as a drive sprocket (not shown), and the extra length 6' of the roller chain 6 is meshed with the induction sprocket 11. 12 is the shutter storage case 9
The storage rail 12 is a storage rail disposed horizontally inside the left and right side plates 10 of the panel, and the storage rail 12 has a roller 7 supported on the roller shaft 5 of each panel 2, which moves upward in conjunction with the rotation of the induction sprocket 11. By rolling the panels 2, the panels 2 are sequentially arranged in parallel and guided to move in the horizontal direction.

13 is the axis 11a of the induction sprocket 11
It is a roller chain holding plate disposed above, and its base 13a is attached to the top plate 14 of the shutter storage case 9, and its plate body 13b is attached to the long groove 13.
The lower end edge 13d of the plate body 13b is curved along the rotation locus of the guide sprocket 11. Therefore, the roller chain pressing plate 13
By adjusting vertically, the induction sprocket 11
A gap path 15 can be set between the lower end edge 13d of the roller chain presser plate 13 and the roller chain 6 only.

Reference numeral 16 denotes a passage blocking device attached to the terminal end of the extra length portion 6' of the roller chain 6;
The outer shape of the hole 6 may be of a size that does not allow it to pass through the gap passage 15, and the material thereof may be metal or synthetic resin.

Next, the operation of the present invention constructed as described above will be explained. When an opening signal is issued to the panel shutter 1 that is currently closing an opening in the building, a drive sprocket connected to an opening/closing machine (not shown) rotates, and in conjunction with this rotation, the induction sprocket 11 rotates. The panels 2 connected by the roller chain 6 move upward along the guide rail 8, and in the process of being moved along the rotation locus of the induction sprocket 11, the direction of movement gradually changes from the upward direction to the horizontal direction. When the roller 7 is turned and passes directly above the axis 11a of the induction sprocket 11, the roller 7 supported on the roller shaft 5 is transferred to the storage rail 12 of the shutter storage case 9, and the rolling of the roller 7 Accordingly, the panels 2 are arranged in parallel to each other and are moved and guided in the horizontal direction for storage.

On the other hand, when closing panel shutter 1,
The induction sprocket 11 is rotated in the opposite direction, and the panels 2 stored in the shutter storage case 9 are moved so that the panel 2 located in the front row moves laterally on the storage rail 12 and is located in the front row. The roller shaft 5 of the panel 2 is the induction sprocket 11
At the point when the roller shaft 5 passes directly above the axis 11a of the guide rail 8, the moving direction is changed from the lateral direction to the descending direction. The opening of the building is thus closed.

In the series of opening and closing operations as described above, if it is desired to close the open shutter 1 during a power outage, for example, the brake of the opening/closing mechanism must be released and the shutter 1 must be lowered by its own weight. In addition, it may be lowered by its own weight if necessary. In this case, conventionally, the terminal end of the extra length 6' of the roller chain 6 was a free end, and the guide sprocket 1
Roller chain press plate 1 is placed above the axis 11a of 1.
3 was not provided, the roller chain 6 was damaged by the vibrations and shocks generated when the panel 2 was lowered.
There were many cases in which the shutter 1 became disengaged from the induction sprocket 11, making subsequent opening/closing operations of the shutter 1 impossible.

However, in the present invention, when the shutter 1 is lowered by its own weight, the passage blocking device 16 attached to the end of the extra length portion 6' of the roller chain 6
The gap path 15 is engaged with the induction sprocket 11.
It is pulled into the roller chain 6 passing through the roller chain 6 and stops when it comes into contact with the roller chain presser plate 13.
The state of engagement between the roller chain 6 and the induction sprocket 11 is maintained properly, and there is no possibility that the extra length 6' of the roller chain 6 will come off the induction sprocket 11.

In short, the present invention is such that a roller chain holding plate whose lower end edge is curved along the rotation locus of the induction sprocket is attached above the axis of the induction sprocket so as to be adjustable in the vertical direction, and the roller chain press plate is attached between the roller chain press plate and the induction sprocket. In addition to forming a gap path that allows the chain to pass through, a device for preventing passage into the gap path is attached to the end of the extra length of the roller chain meshed with the induction sprocket. The phenomenon in which the roller chain comes off from the induction sprocket, which occurs when the roller chain is disengaged from the induction sprocket, is prevented by the cooperative action of the roller chain presser plate and the passage prevention device into the gap path, and the engagement state between the roller chain and the induction sprocket is maintained properly. This has an extremely useful practical effect in that the weight of the panel can be maintained and the weight of the panel can be lowered smoothly and reliably at all times.

[Brief explanation of the drawing]

The drawings show an embodiment of the device for preventing the panel connection roller chain from coming off in a panel shutter according to the present invention, in which FIG. 1 is a schematic perspective view of the panel shutter, and FIG. FIG. 3 is a schematic side view of the main part, and FIG. 4 is an explanatory diagram of the operation of the conventional example. 1...Panel shutter, 2...Panel, 3...
...Upper stile, 4...Bearing member, 5...Roller shaft, 6...
...Roller chain, 6'... Extra length, 6a... Outer link plate, 6b... Roller of roller chain, 6c... Inner link plate, 7... Roller of roller shaft, 8... Guide rail, 9... ... Shutter storage case, 10 ... Left and right side plates, 11 ... Induction sprocket, 11a ... Shaft core, 12 ... Storage rail, 13 ... Roller chain presser plate, 13a
... Base, 13b ... Plate body, 13c ... Long groove, 1
3d...Lower edge, 14...Top plate of shutter storage case, 15...Gap path, 16...Passing blocker.

Claims (1)

[Scope of utility model registration request] A roller shaft is inserted into both ends of the upper stile of each panel via a bearing member, and each panel is vertically connected by a roller chain attached to the roller shaft to form a shutter curtain. A shutter storage case is connected to the upper end of the guide rail that guides the configured panels up and down on the same plane, and is equipped with a storage rail that stores and guides the panels horizontally in a state in which the panels are lined up in parallel. In the panel shutter, an induction sprocket that engages with a roller chain is rotatably disposed in the shutter storage case, and an opening in a building is opened and closed in conjunction with the rotation of the induction sprocket. A roller chain holding plate whose lower end edge is curved along the rotation locus of the induction sprocket is installed above the axis of the induction sprocket so as to be adjustable in the vertical direction, and a gap is created between it and the induction sprocket to allow the passage of the roller chain. Disassembly of a roller chain for connecting panels in a panel shutter, characterized in that a pass prevention device to the gap path is attached to the end of the extra length of the roller chain that forms a path and meshes with the guide sprocket. Prevention device.