JPS5810552B2 - Shoji falling prevention device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for preventing falling of window shoji and the like.

Generally, window shoji A needs to have a gap in the vertical direction of window frame A that is sufficient to fit the lower end a of shoji B into rail 1, as shown in Fig. 1. On the other hand, this gap carries the risk of the shoji B accidentally falling off the window frame A, which should be considered a problem from the viewpoint of the safety of the window shoji.

Conventionally, a method has been proposed to restrict the upward movement of the shoji B by attaching block pieces 2 to predetermined locations on the window frame A after erecting the shoji B on the window frame A, as shown in the figure. In this case, each time it is necessary to actually remove the shoji B, this type of block piece 2 must be removed and attached, which makes it extremely inconvenient because the shoji cannot be quickly attached or removed.

In particular, since this type of block piece 2 is a separate item from the shoji etc., there is a risk of forgetting to attach it.

The present invention relates to a shoji falling prevention device aimed at solving the above-mentioned problems, and in which a driven body comprising a restraining part and a semicircular gear at the top and bottom is pivoted to a housing with a support shaft. In this case, a driving body is mounted such that it can freely move back and forth around the support shaft and has a spur gear that meshes with a semicircular gear formed on the lower surface of the driven body.

Below, an example of implementing the present invention will be explained with reference to the drawings.
The figure is a perspective view of the device. Reference numeral 3 denotes a driven body having a restraining part 4 of a predetermined height and a semi-circular gear 5 on the top and bottom, which is rotatably pivoted in a housing 6 with a support shaft 7. ing.

Reference numeral 8 denotes a driving body having a spur gear 9 that meshes with a semi-circular gear 5 formed on the lower surface of the driven body 3. The driving body 8 is mounted in the housing 6 so as to be movable back and forth. When operated, the driven body 3 rises or falls horizontally using the support shaft 7 as a fulcrum, as shown in FIGS. 3 and 4.

Figures 5 and 6 show a state in which the present device is attached to the upper corner of shoji B, and after shoji B is installed on window frame A as shown in Figure 1, the shoji B is closed. By doing so, the driven body 3
is raised as the driving body 8 moves forward, and the restraining part 4 that appears in the gap can restrict the upward movement of the shoji B.

In this case, the restraining part 4 may be set to an appropriate height so that the distance between the upper end of the restraining part 4 and the window upper frame is narrower than that of the lower end a of the shoji screen.

On the other hand, when removing the shoji B, the driven body 3 is moved to the driving body 8.
All that is required is to re-immerse the restraining part 4 into the housing 6 by retracting the restraining part 4.

In FIG. 7, a protrusion 10 is provided on a driving body 8 to restrict sliding of the driving body 8 due to vibrations when opening and closing a shoji screen, thereby preventing the driven body from falling sideways.

As described above, the present invention meshes the gear of the driven body with the spur gear of the prime mover, and as the prime mover moves back and forth, the driven body is raised or fallen sideways with the support shaft as a fulcrum. Because of this, the restraining part of the driven body can easily move on and off the shoji, allowing the shoji to be installed and removed quickly and smoothly, and also to reliably prevent it from falling off.

Furthermore, since the present invention has such a configuration, it is possible to automatically operate the falling prevention device at the same time as the shoji is closed, which is extremely beneficial from the viewpoint of the safety of window shoji and the like. Can be done.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of a window sash equipped with a conventional device, Fig. 2 is a perspective view of the present device, Figs. 3 and 4 are front views of the same showing the operating state, and Figs. 5 and 6 are Same figure for shoji, No. 7
The figure is a partially enlarged view. Explanation of main symbols: 3 is a driven body, 4 is a restraint part, 5 is a gear,
6 is a housing, 7 is a support shaft, 8 is a driving body, and 9 is a spur gear.

Claims (1)

[Claims] 1. A driving body in which a driven body having a restraining part and a semicircular arc gear on the upper and lower sides is pivotally attached to a casing with a support shaft, and a spur gear meshes with a semicircular arc gear centered on the support shaft. A falling-off prevention device for a shoji screen, characterized in that the shoji door is attached to the housing so as to be movable back and forth.