JPH0648076Y2 - Seat shutter opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a seat shutter provided at a doorway of a factory or the like.

[Problems to be solved by the prior art and the invention] Recently, in order to prevent waste of energy due to temperature difference between inside and outside of a factory, for example, a shutter curtain made of a curtain-shaped sheet material is provided along with a metal shutter, Keep the metal shutter open during periods of heavy traffic such as vehicles.
Efforts are being made to minimize energy loss by frequently opening and closing the seat shutter. By the way, in such a sheet-like shutter curtain, high-speed opening and closing operations are required, but since the conventional ones are opened and closed based on motor drive, it is inevitable that there is a limit and it is difficult to adjust the opening and closing speed. However, once the speed was changed, it was troublesome to change the transmission gear ratio.

[Means for Solving the Problems] The present invention was devised with the object of providing an opening / closing device for a seat shutter that can eliminate these drawbacks in view of the above-mentioned circumstances. -Shaped foldable air column cylinders connected to the intake and exhaust means are provided on both side edges guided by the guide rails of the shutter curtain, while the lower end edge of the shutter curtain is connected to the balance weight to form the shutter curtain. The air column cylinder and the balance weight are connected to the tip of the cord body that normally urges in the opening direction.
The tension caused by the intake of the air column causes the shutter curtain to close against the balance weight, and the relaxation due to the exhaust of the air column causes the bias of the balance weight to open and open the shutter curtain. It is a feature.

The present invention is capable of opening and closing the shutter curtain at a high speed and adjusting the opening / closing speed easily by adjusting the air intake / exhaust amount to the air column.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter curtain of a sheet shutter, which is formed in a double sheet structure inside and outside. A plurality of reinforcing rods 2 are sewn horizontally between the sheet curtains 1 at predetermined intervals, and protruding guides 3 are provided at both ends of the reinforcing rods 2. Further, cushioning members 1a and 1b are provided on the upper and lower edges of the sheet curtain 1. Reference numeral 4 is a guide rail for guiding opening and closing of the seat curtain 1. Elongated and continuous bag-shaped air column cylinders 5 are attached to both side edges and upper edge of the sheet curtain 1, and the bag-shaped air column cylinders 5 are made of rubber, resin, or other appropriate material. It is formed by using. The lowermost guide 3 extends near the bottom of the guide rail 4, and one end of a wire 6 is connected to the tip. A pulley 7 is rotatably supported above the guide rails 4,
The other end of the wire 6 is connected to a balance weight 8 via the pulley 7. The weight of the balance weight 8 is set to be slightly heavier than the total weight of the shutter curtain 1. A cushion stop side 9 is provided at a predetermined position above the guide rail 4 for preventing the shutter curtain 1 from rising too much, while the balance weight 8 moves up and down in the guide groove to reach the wire 6 when stopped. Considered to reduce the impact of.

On the other hand, the air column cylinder 5 provided at the upper edge of the shutter curtain 1 is connected to a pipe to which an injection electromagnetic valve 10 and an exhaust electromagnetic valve 11 are connected, and both valves 10 and 11 are separately connected. The opening and closing can be controlled by being supported by an operation panel provided, and they are respectively connected to separately provided compressed air tanks and exhaust tanks such as a compressor (not shown).

In the embodiment of the present invention constructed as described above, when the shutter curtain 1 is fully closed, the injection valve 10 is open and the exhaust valve 11 is closed, and the air column cylinder 5 is closed. Is filled with compressed air, and air column cylinder 5 accompanying this is filled.
The tension causes the shutter curtain 1 to close against the balance weight 8.

On the other hand, when the injection valve 10 is closed and the exhaust valve 11 is opened, the air in the air column 5 is exhausted and the air column 5 relaxes, whereby the shutter curtain 1 becomes a balance weight. It will be opened by being folded by the biasing force of 8.

As described above, according to the present invention, the opening and closing operation of the shutter curtain 1 is performed by the tightening operation by the air intake and exhaust of the air column cylinder 5 and the balance with the balance weight 8.
The opening / closing speed of the shutter curtain 1 can be freely adjusted by adjusting the intake air amount of the air to the air column cylinder 5,
Therefore, the opening / closing speed can be adjusted steplessly from high speed to low speed.

Moreover, in this structure, since the air column cylinder 5 that is strained when it is fully closed comes into close contact with the inner peripheral surface of the guide rail 4 in a pressing manner, excellent airtightness can be secured almost at the same time as closing, and cooling and heating efficiency can be improved. You can

It should be noted that the present invention is not limited to the above-mentioned embodiment, and the air column cylinder is not limited to the both side edge portions guided by the guide rails, but the seat plate portion and the curtain. It can be provided even in the central portion and may be used as a reinforcing bone of a shutter curtain when the air column cylinder is strained.

[Effects of Operation] In short, since the present invention is configured as described above, the opening and closing operation of the sheet-shaped shutter curtain is performed by the loosening and the urging force of the balance weight due to the air intake and exhaust of the air column. Therefore, the opening / closing speed can be easily adjusted steplessly from high speed to low speed by adjusting the intake / exhaust amount of air, and it can be adapted to the operating conditions. The shutter curtain can be opened and closed at the specified speed.

[Brief description of drawings]

The drawings show an embodiment of a seat shutter opening / closing device according to the present invention. FIG. 1 is a schematic front view of an air column cylinder shutter, FIG. 2 is a plan view thereof, and FIG. ),
(B) is a side view for explaining the same, and FIG. 4 is a sectional view of a guide rail. In the figure, 1 is a shutter curtain, 2 is a reinforcing rod, 4 is a guide rail, 5 is a bag-shaped air column, and 11 and 12 are injection and exhaust electromagnetic valves.

Claims (1)

[Scope of utility model registration request] 1. A foldable air cylinder connected to intake and exhaust means is provided on both side edges guided by guide rails of a sheet-like shutter curtain, while a lower end edge of the shutter curtain is connected to a balance weight. By connecting the air column cylinder and the balance weight to the tip end of the string body that constantly urges the shutter curtain in the opening direction, the tension of the air column cylinder causes the shutter curtain to resist the balance weight. A seat shutter opening / closing device, which is closed and balanced so that the shutter curtain is opened by the urging force of the balance weight due to relaxation due to exhaust of the air column cylinder.