JPH0242875Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ceiling storage type shutter that opens and closes an opening, and particularly relates to a chain winding type ceiling storage type shutter with improved durability.

[Conventional technology]

Conventionally, for ceiling storage type shutters, the fifth
As shown in the figure, a pair of left and right winding cables 3 connected to the lower left and right ends of the lowest panel 2' of the shutter curtain 1 are inserted into guide rails 4 erected on both sides of the opening, and the upper part is connected to the winding drum. A winding drum 5 is rotated by an opening/closing drive device 6, and the shutter curtain 1 is sent to the lower surface of the ceiling, and is lowered from the lower surface of the ceiling to open and close the opening.

[Problem that the invention attempts to solve]

By the way, when winding up the shutter curtain 1, as shown on the right side of FIG. , the hoisting cable 3 comes into contact with the panel 2 of the shutter curtain 1, and in the long run, the strands of the hoisting cable 3 break and stretch, causing damage to the panel, reducing its durability and emitting noise. There was a problem.

[Means for solving problems]

The present invention was devised in view of the above-mentioned conventional circumstances and to eliminate the drawbacks thereof, and its purpose is to provide a ceiling storage type shutter that does not cause damage to the hoisting cables or panels and does not emit noise. It's about doing.

In order to achieve the above object, the present invention uses a pair of left and right hoisting cables connected to the lower left and right sides of the bottom panel of a shutter curtain, which is made up of a plurality of horizontally long panels connected vertically, to be hoisted up using an opening/closing drive device. In a ceiling storage type shutter in which the shutter curtain is lowered and sent to the lower surface of the ceiling, or lowered from the lower surface of the ceiling to open and close the opening, the hoisting cable is a roller chain, and the roller chain has a roller chain installed at a predetermined pitch. Rollers protruding from both sides of the chain side plate are provided, and a pair of left and right sprockets connected to the opening/closing drive device is provided at the top of the opening.Chain rails along the ceiling are connected to both sprockets, and each chain rail is provided with the rollers. A slit is formed to hang down the chain between the rail and the roller supporting the roller part of the chain, and each roller chain is wound approximately 1/4 turn around each sprocket, and the excess winding length of the roller chain is connected to the chain rail. It is designed to be suspended in a bundle and fed.

[Effect]

Therefore, in the chain winding type ceiling storage type shutter of the present invention, when the drive device winds up and rotates the sprocket, the roller chain is wound up and the shutter curtain rises, and the excess length of the chain due to winding is sequentially extended to the chain connected to the sprocket. Being pushed out onto the rail. Here, the chain is supported on the chain rail by rollers protruding from both sides of the chain provided at a predetermined pitch, and the chain in the middle of the rollers hangs from the slit in the chain rail, so the chains hang in a bundle and form a chain. It will be stored on the rail. In this way, the roller chain is moved in the line direction from start to finish and not in the lateral direction, which eliminates the problem of the chain contacting the shutter curtain panel or guide rail and causing mutual damage or noise, and also prevents the chain from moving in the horizontal direction. The chain is suspended from the chain rail in a bundle, so the chain can be compactly stored on the short chain rail.

〔Example〕

The present invention will be explained in detail below based on an illustrated embodiment.

Figure 4 is a schematic overall side view of the shutter of the present invention.
FIG. 1 is a detailed side view of the main part, and as shown in the figure, the shutter has a plurality of horizontally long panels 11.
are vertically connected to form a shutter curtain 10, and each panel 11 is supported by guide rails 13 erected on both sides of the opening via rollers 12 pivoted on both sides. Guide rail 13
is curved in the horizontal direction slightly forward and downward at the top of the opening, along the ceiling 14, and has a stopper 1 at the end.
5 is provided.

At the top of the opening, there is a shaft 1 that is long in the frontage direction.
6 is constructed, and the shaft 16 is connected to the opening/closing drive device 17.
A sprocket 18 is attached to both ends of the sprocket. On the other hand, the lower ends of roller chains 19 are fixed to the lower left and right sides of the lowermost panel 11' of the shutter curtain 10, and the roller chains 19 are connected to the guide rails 13.
The roller chain 19 is inserted through the inside and wrapped around the sprocket 18 for approximately 1/4 turn, and the remaining length of the roller chain 19 is fed into a chain rail 20 connected to the sprocket 18 in a tangential direction along the ceiling 14 and extending slightly backward. It's summery. A chain stopper 21 is provided on the 1/4 outer periphery of the sprocket 18 on which the chain 19 is wound, and a chain release 22 is provided below the connecting portion between the sprocket 18 and the chain rail 20.

As shown in detail in FIG.
A is longer than the standard side plate, a roller shaft 23a passes through the center thereof, and rollers 23 are protruded from both sides of the side plate 19a. Further, the chain rail 20 is connected to the chain 19 as shown in detail in FIG.
A slit 20b is formed in the middle of both rail parts 20a supporting both rollers 23 of the chain 19.
is supported by the rail part 20a by the roller 23 part,
The chain in the middle of the roller 23 has a slit 20b.
It begins to droop from the top.

In the shutter of the above configuration, when the opening/closing drive device 17 is activated in the closed state shown by the solid line in FIG. 4 and the sprocket 18 is wound up and rotated, the roller chain 19 is wound up and the shutter curtain 1
0 is guided by the guide rail 13 and rises, and the guide rail 1 follows the ceiling 14 as shown by the two-dot chain line.
3 and stored. Here, the extra length of the chain 19 due to the winding of the roller chain 19 is sequentially pushed out in the linear direction to the chain rail 20 connected to the sprocket 18, but since the chain rail 20 is attached slightly backward, the roller 23 The attached chain link runs on the chain rail 20 and connects sequentially from the end of the chain rail 20, and the intermediate chain of the roller 23 hangs down from the slit 20b of the chain rail 20, and when the shutter is opened, the chain 19 The entire remaining length of the chain rail 20 is suspended in a bundle and stored in the chain rail 20.

While the roller chain 19 is being driven, the chain 19
The stopper 21 prevents the chain from lifting off from the sprocket 18, and a chain release 22 is provided at the joint with the chain rail 20, so even though the chain 19 is a free end, Chain drive and chain rail 20
Delivery will be made reliably.

To close the shutter, when the opening/closing drive device 17 lowers and rotates the sprocket 18, the chain 19 is lowered, and the shutter curtain 10 is sent out by its own weight from the guide rail 13 of the ceiling 14, which is slightly sloping forward, and descends. At the same time, the excess length of the chain 19 hanging down from the chain rail 20 is also pulled out linearly, and the shutter is closed.

[Effect of idea]

As described in detail above, according to the present invention, a drive device for opening and closing a pair of left and right hoisting cables connected to the lower left and right sides of the bottom panel of a shutter curtain formed by connecting a plurality of horizontally long panels vertically. winding,
In a ceiling storage type shutter in which the shutter curtain is lowered and sent to the lower surface of the ceiling or lowered from the lower surface of the ceiling to open and close an opening, the hoisting cable is a roller chain, and the roller chain has chains at predetermined pitches. Protruding rollers are provided on both sides of the side plate, and a pair of left and right sprockets connected to the opening/closing drive device is provided at the top of the opening.
A chain rail along the ceiling is connected to both sprockets, and a slit is formed in each chain rail to hang a chain between the rail and the roller supporting the roller part of the roller chain, and each of the roller chains is connected to each of the roller chains. Each sprocket is wound about 1/4 turn, and the extra length of the roller chain is suspended from the chain rail in a bundle, so the roller chain is moved in the line direction from beginning to end and does not move laterally. This eliminates the problem of the chain contacting the shutter curtain panel or guide rail and damaging each other, reducing durability and emitting noise, and also compactly storing the roller chain with a short chain rail when the shutter is opened. This provides excellent practical effects such as the ability to

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a detailed side view of the main parts of the shutter, Figure 2 being a plan view of the roller chain, Figure 3 being a front view of the chain rail, and Figure 3 being a front view of the chain rail. FIG. 4 is a generally overall side view of the shutter, and FIG. 5 is a diagram illustrating the operation of a conventional ceiling storage type shutter. 1,10...shutter curtain, 2,11...
...Panel, 2', 11'...Bottom panel, 3...
...Hoisting cable, 4,13...Guide rail, 5...
Hoisting drum, 6, 17...Opening/closing drive device, 12
...Panel roller, 14...Ceiling, 15...
Stopper, 16...Shaft, 18...Sprocket, 19...Roller chain, 19a...
Side plate, 20...Chain rail, 20a...Rail portion, 20b...Slit, 21...Chain removal prevention, 22...Chain removal, 23...Chain roller, 23a...Roller shaft.

Claims (1)

[Scope of utility model registration request] A shutter curtain is made up of multiple horizontal panels connected vertically, and a pair of left and right hoisting cables connected to the lower left and right sides of the bottom panel are hoisted and lowered by an opening/closing drive device, and the shutter curtain is attached to the underside of the ceiling. In a ceiling-storage type shutter that opens and closes an opening by sending the hoist into the roof or lowering it from the lower surface of the ceiling, the hoisting cable is a roller chain, and the roller chain is provided with rollers protruding from both sides of the chain side plates at predetermined pitches, On the other hand, a pair of left and right sprockets connected to an opening/closing drive device is provided at the top of the opening, and chain rails that run along the ceiling are connected to both sprockets, and each chain rail has a rail and a roller that support the roller part of the roller chain. A slit is formed through which the intermediate chain hangs, and each of the roller chains is wound approximately 1/4 turn around each of the sprockets, so that the excess length of the roller chain is fed into the chain rail by hanging it in a bundle. A chain winding type ceiling retractable shutter characterized by: