JPS608044Y2 - overslide shutter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an entrance/exit shutter, and the object thereof is to miniaturize the spring drive unit used to open the shutter.

In shutters for entrances and exits of buildings, there is one that assists the opening of the shutter by the force of a spring, in which a winding box is provided above the entrance and a torsion coil spring is attached to a shaft inside the box.

This is not a problem if the height of the entrance is sufficient, but if the height of the entrance is relatively low, such as in a garage, there is a problem that the entrance is even lower, making it difficult to use.

In order to solve this problem, a structure in which the shutter is retracted parallel to the ceiling of the building is used.

In this case, the shaft and tension spring for supporting the shutter are attached to the ceiling at the back of the building, which solves the problem of low entrances and exits.

However, it requires a space to accommodate a considerable length of coil spring, which may impede indoor use.

This proposal solves these problems.

To explain this with reference to the embodiment shown in the drawings, reference numeral 1 denotes a shutter, and slats, bars, or other arbitrary structures can be used.

Reference numeral 2 denotes a shaft-supported wire winding drum, and flanges 3 are fixed to the outer sides of both ends thereof.

A wire 4 is wound around the outer peripheral surface of the drum 2, one end of which is fixed to the drum 2 or 7 lunge 3, and the other end is attached to the upper end of the shutter 1.

Reference numeral 5 denotes a support shaft that rotatably supports the drum 2, one end of which is non-rotatably supported by a bracket 6 fixed to a building.

7 is a torsion coil spring arranged around the support shaft 5 in the drum 2, one end of which is connected to the support shaft 5, and the other end is connected to the drum 2.
, and are twisted as the drum 2 rotates.

In the torsion coil spring 7, a plurality of coils having different diameters are inserted at intervals in the diametrical direction and stacked concentrically in a plurality of layers, and each of the coils has a
As illustrated in FIG. 5, it is continuously formed from one wire.

Although the torsion coil spring 7 in FIG. 5 is shown stretched in its axial direction, this is for the purpose of making it easier to understand the coil springs in the inner and outer layers, and this configuration is not intended to be limiting.

8 is a cover of the drum 2.

9 is a ceiling wall of the building, 10 is a side wall of the building, 11 is a guide rail of the shutter 1 fixed vertically to the side wall of the building,
12 is a guide rail for the shutter 1 fixed in parallel with the ceiling wall 9; 13 is a guide pulley for supporting the shutter 1 provided between the opposite ends of the guide rails 11 and 12; and the drum 2 is A support shaft 5 is mounted perpendicularly to the side wall 10 at a position close to the rear end of the guide rail 12 .

The structure of the shutter of the present invention is as described above, and when closing the shutter 1, it is pulled down in the same way as a known shutter.

Then, since one end of the wire 4 wound around the drum 2 is attached to the upper end of the shutter 1,
As the shutter 1 descends, the wire 4 is rewound and the drum 2 rotates.

When the drum 2 rotates, since one end of the torsion coil spring 7 is attached to it, the torsion coil spring 7 is twisted in its circumferential direction, and a repulsive force is generated.

When opening the shutter 1, by lifting it, the torsion coil spring 7 uses the repulsive force to rotate the drum 2 and assist in winding up the wire 4, so that the shutter 1 can be opened easily.

The guide rail 11 of the shutter 1 is installed perpendicularly to the entrance of the building and horizontally to the ceiling in the depth direction, and when opened, the shutter 1 remains in a plate shape and is placed close to the ceiling wall and parallel to it. Since it can be stored in a garage, it can be used without lowering the entrance and exit, and can be used in garages with relatively low ceilings.

The drum 2 that drives the shutter 1 can be installed in the deep part of the ceiling wall, and the torsion coil spring 7 housed inside the drum 2 is a single torsion coil spring 7, with coils of different diameters inserted into each other and stacked concentrically. It is made of continuous wire.

Therefore, by increasing the number of stacked coils, the length can be greatly shortened and the necessary amount of twist can be achieved, and the length of the drum 2 can also be greatly shortened. The storage space for the drum 2 is also reduced, and indoor utilization efficiency can be improved.

Furthermore, since the entire torsion coil spring 7 can be housed within the drum 2, the appearance can be improved, and even if the torsion coil spring 7 is cut, it is safer than the conventional tension spring system.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a sectional side view, Fig. 2 is a sectional plan view, Fig. 3 is an enlarged sectional plan view of the drum section, Fig. 4 is a front view of the same without the cover, and Fig. FIG. 5 is an enlarged perspective view of a portion of the torsion coil spring. 1: shutter, 2 drum, 3: flange, 4: wire, 5: spindle, 6: bracket, 7: torsion coil spring, 8: cover 11, 12 guide rail.

Claims (1)

[Claims for Utility Model Registration] (11) A drum is rotatably attached to a spindle that is made non-rotatable. A torsion coil spring is a torsion coil spring in which multiple coils with different diameters are inserted into each other and stacked concentrically in multiple layers, and the entire length of the coils is continuously formed by a single wire. One end of the wire is fixed to the drum, and the other end of the wire is wrapped around the drum, and the other end is attached to the upper end of the shutter supported by a guide rail. (2) The guide rail of the shutter is attached to the doorway The drum is installed perpendicularly to the ceiling wall of the building, parallel to it and in the depth direction, and the drum is attached to the back end of the guide rail of the ceiling wall. overslide shutter.