JPH0137090Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing panels from falling off in panel shutters, and more specifically, during the closing operation of the shutter, it is possible to properly engage the roller chain that connects the panels in the vertical direction and the induction sprocket. The present invention relates to a panel fall prevention device that maintains the panel so that the panel can be lowered smoothly and reliably at all times.

In this type of panel shutter, the extra length of a roller chain that vertically connects each panel is engaged with the guide sprocket arranged on the left and right side plates of the shutter storage case, which is connected to the upper end of the guide rail. Since it is configured to open and close the opening in the building in conjunction with the rotation of the induction sprocket, when the panel is lowered in the same plane during the shutter closing process, the entire load of the panel is applied to the roller chain. Therefore, as shown in Figure 4,
With the vertical center line of the induction sprocket as the boundary, the roller chain in the A direction is always pulled in the downward direction of the panel, but in the B direction, only the roller chain load between C ₁ and _{C 2} is applied, so the result is Specifically, the roller chain on the storage side from the vertical centerline is always subjected to a pulling force in the A direction.

For this reason, during the closing operation of the shutter, the roller chain lifts up from the induction sprocket, and the rollers that are locked in the troughs climb over the teeth, causing a so-called mountain-crossing phenomenon, which causes the left and right balance of the panel to be disrupted, causing the panel to There were disadvantages such as the lowering of the panel was not carried out properly, and in some cases the roller chain came off the guide sprocket and the panel fell off, making it impossible to lower the panel.

In view of the above-mentioned circumstances, the present invention was devised to eliminate the drawbacks of the conventional technology. The bearing link plate is attached by penetrating the bearing ring plate to be connected, and by cutting out a part of the teeth of the induction sprocket to form a guide roller shaft support part inside the valley where the roller is locked. The induction sprocket is configured so that the outer edge of the roller chain does not protrude from the outer periphery of the roller chain suspended by the induction sprocket, and
By arranging the roller chain presser plate close to the outer circumferential area of the induction sprocket, it is possible to prevent the roller chain from climbing over or coming off the induction sprocket, which conventionally occurs during the closing operation of the shutter. An object of the present invention is to provide a device for preventing a panel from falling off in a panel shutter, which can maintain a properly engaged state with an induction sprocket and always smoothly and reliably lower the panel.

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 4, 1 is a panel shutter 1, and the panel shutter 1 has a plurality of long panels 2 arranged at predetermined intervals in the vertical direction. A roller chain 6 is attached to a guide roller shaft 5 fitted through a bearing member 4 at both ends of the roller chain 6, and the roller chain 6 is pivotally connected in a series. The roller shaft 5 is attached to a bearing link plate 6a connected to the roller chain 6 so as to pass through the bearing link plate 6a at a position offset from the center thereof in the longitudinal direction.

A guide roller 7 is rotatably supported on the guide roller shaft 5.

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 9 have a An induction sprocket 11 is supported coaxially with a drive sprocket (not shown), and the extra length of the roller chain 6 is engaged with the induction sprocket 11. As shown in FIG. 3, the induction sprocket 11 has a portion of the teeth 11a, 11a, etc. cut out, and a valley portion where the guide roller shaft 5 locks the rollers 6b, 6b, etc. of the roller chain 6. 11b,1
1b... A guide roller shaft support portion 11c is formed so as to be located inside, and the bearing link plate 6a
The guide roller shaft 5 is supported by being connected to the chain link plate 6c across the rollers 6b, 6b, . The guide roller shaft 5 is always supported during the opening/closing operation of the guide roller 1.

12 is the left and right side plates 1 of the shutter storage case 9;
The storage rail 12 is a storage rail disposed horizontally inside the panel 0, and the storage rail 12 carries a guide roller 7 supported on the guide roller shaft 5 of each panel 2, which moves upward in conjunction with the rotation of the induction sprocket 11. By rolling, each panel 2 is guided to move in the horizontal direction in a state in which the panels 2 are sequentially arranged in parallel. In addition, 13 is a roller chain holding plate,
The roller chain presser plate 13 is fixedly installed close to the outer peripheral area of the induction sprocket 11.

Next, the operation of the present invention constructed as described above will be explained. When an opening signal is sent to panel shutter 1, which is currently closing the opening of the building,
A drive sprocket connected to an opening/closing machine (not shown) rotates, and in conjunction with this rotation, the induction sprocket 11 is rotated in the direction of arrow B shown in FIG. In the process of upward movement along the guide rail 8 and movement along the rotation locus of the induction sprocket 11, the direction of movement is gradually changed from the upward direction to the horizontal direction, and furthermore, the direction of movement is changed from the upward direction to the horizontal direction, and furthermore, the movement direction is changed directly above the axis 11d of the induction sprocket 11. At the time of passing, the guide roller 7 supported by the guide roller shaft 5 is transferred to the storage rail 12 of the shutter storage case 9, and as the guide roller 7 rolls, each panel 2 is parallel to each other. They are placed vertically and guided in horizontal movement for storage.

On the other hand, when closing panel shutter 1,
The induction sprocket 11 is rotated in the direction of the arrow shown in FIG. 4, and each panel 2 stored in the shutter storage case 9 sequentially moves laterally on the storage rail 12 until the guide roller shaft of the panel 2 located in the front row moves horizontally. When the guide roller shaft 5 passes directly above the axis 11d of the induction sprocket 11, the moving direction is changed from the lateral direction to the descending direction, and further, in the process of moving the guide roller shaft 5 along the rotation trajectory of the induction sprocket 11, the guide roller shaft 5 descends. However, they are sequentially arranged on the same plane while being supported by the guide rail 8, and the opening of the building is thus closed.

In the process of the closing operation as described above, when the induction sprocket 11 is rotated in the direction A, the entire load of the panel 2 is applied to the roller chain 6. is always pulled in the descending direction of the panel 2 in the A direction, but only the load of the roller chain 6 between C ₁ and _{C 2} is applied in the B direction. The roller chain 6 that is engaged on the rotation trajectory in the descending direction of the panel 2 is pulled in the descending direction of the panel 2 and does not come off, but the roller chain 6 between C ₁ and _{C 2}
exhibits a phenomenon in which it lifts up and comes off from the induction sprocket 11.

However, in the present invention, the guide roller shaft 5 is located eccentrically in the longitudinal direction from the center of the bearing link plate 6a connected to the roller chain 6.
is attached through the guide sprocket 11, and a part of the teeth 11a, 11a, . Since the roller shaft support part 11c is formed so that the bearing link plate 6a is interposed and connected, the roller chain 6 interposed and connected with the bearing link plate 6a is similar to the case where only the roller chain 6 is engaged with the induction sprocket 11. The outer circumferential edge of the roller chain 6a does not protrude in the outer circumferential direction of the suspended induction sprocket 11, and therefore the roller chain presser plate 1 is placed close to the outer circumferential area of the induction sprocket 11 where the roller chain 6 is suspended.
3 can be installed, and therefore the roller chain 6 can be reliably prevented from lifting up relative to the induction sprocket 11, and when the shutter 1 is closed, the roller chain and the induction sprocket 1 can be
The meshing state with panel 1 is always maintained properly, and panel 2
is lowered smoothly and reliably.

In short, the present invention involves inserting a guide roller shaft into both ends of the upper frame of each panel via a bearing member,
A shutter curtain is constructed by connecting each panel in the vertical direction by a roller chain attached to the guide roller shaft, and a guide rail is attached to the upper end of the guide rail that guides the panels constituting the shutter curtain up and down in the same plane. A shutter storage case is installed in series with a storage rail that guides the storage in the horizontal direction while each panel is arranged vertically in parallel, and the shutter storage case has an induction sprocket that engages with a roller chain so as to be rotatable. In a panel shutter configured to open and close an opening in a building in conjunction with the rotation of the induction sprocket, the guide roller shaft has a bearing interposed and connected to the roller chain at a predetermined interval. The guide roller shaft is attached to the link plate through the link plate, and the teeth of the induction sprocket support the guide roller shaft inside the valley where the rollers of the roller chain are locked, and the bearing ring plate is housed within the outer peripheral area of the induction sprocket. In addition to forming a notch in the guide roller shaft support, a roller chain presser plate is provided close to the outer circumferential area of the induction sprocket around which the roller chain is suspended, thereby eliminating the induction that conventionally occurs during the closing operation of the shutter. It is possible to prevent the roller chain from going over the mountain or coming off from the sprocket, and to maintain the proper meshing state between the roller chain and the induction sprocket, and the panel can always be lowered smoothly and reliably. In addition to being able to prevent the shutter from falling off, in conjunction with the formation of the guide roller shaft support section, the guide roller shaft can be made thicker than conventional ones, which reduces vibrations and loads that occur when the shutter is opened and closed. This has very useful practical effects, such as increasing the strength against impact and extending the service life.

[Brief explanation of the drawing]

The drawings show an embodiment of a panel descent regulating device in a panel shutter according to the present invention, and FIG. 1 is a schematic perspective view of the panel shutter;
2 is a detailed view of a part of FIG. 1, FIG. 3 is a side view of the main part, and FIG. 4 is an explanatory view of the operation. 1...Panel shutter, 2...Panel, 3...
...Upper stile, 4...Bearing member, 5...Guide roller shaft, 6...Roller chain, 6a...Bearing link plate, 6b...Roller of roller chain, 6
c... Chain link plate, 7... Guide roller, 8... Guide rail, 9... Shutter storage case, 10... Left and right side plates, 11... Induction sprocket, 11a... Teeth, 11b... Valley, 11
c...Roller shaft support part, 11d...Axis core, 12...
...Storage rail, 13...Roller chain press plate.

Claims (1)

[Scope of utility model registration request] A guide 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 guide roller shaft to form a shutter curtain. A shutter storage case is attached to the upper end of the guide rail that guides the panels that make up the curtain up and down on the same plane, and is equipped with a storage rail that guides the storage of each panel in a horizontal direction while the panels are lined up in parallel. In addition, 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. The guide roller shaft is attached through a bearing link plate which is interposed and connected to the roller chain at a predetermined interval, and is located inside the valley portion where the roller of the roller chain is locked by the teeth of the induction sprocket. A guide roller shaft support part is notched to support the guide roller shaft and accommodate the bearing ring plate within the outer circumferential area of the induction sprocket, and a roller chain retainer is provided near the outer circumferential area of the induction sprocket around which the roller chain is suspended. A device for preventing a panel from falling off in a panel shutter, characterized in that a plate is provided.