JPS644033B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in the window frame of a glass viewing window formed on the front plate of a box such as a cubicle.

The window glass fixing structure of the box peephole uses a rubber annular frame with an H-shaped cross section and grooves on the outer and inner surfaces as the window frame. There is a method in which the window glass is fitted into the frame and then attached to the hole edge of the peephole using the grooves on the outer circumferential surface.

This type of window frame does not require tightening bolts and therefore does not require the formation of bolt holes on the edge of the peephole, but on the other hand, it requires skill and the hands of two or more people to install the window glass. Not only does the work take a considerable amount of time, but there is a risk that the rubber annular frame may melt in the event of a fire, causing the window glass to come off.

A method that does not require skill to install window glass is to attach packing to the periphery of the glass, sandwich this packing between the metal frames on the front and back, and insert the bolts passed through the metal frames on the front into the holes formed on the edge of the peephole. Through,
Since the bolt is then passed through the metal frame on the back side and tightened with a nut, it is necessary to form a hole for the bolt in advance at the edge of the window hole when installing the window glass, making the work complicated.

This invention solves the above-mentioned problems with the window frame of a peephole such as a box, and its purpose is to eliminate the need for bolt holes for attaching the window frame to the edge of the peephole and to make it easier to attach the frame. To provide a window frame that is easy to use and has no fear of the window glass coming off even if the packing melts.

The details of the invention will be explained below based on embodiments shown in the accompanying drawings.

In FIG. 1, 1 is the front plate of the box, and 2 is the window hole in the viewing window.

A window frame A is fitted into the peephole. As shown in Fig. 2, this window frame consists of a main frame body 3, a sub-frame body 4,
and packing 5 interposed between both frames.

The main frame 3 and the sub-frame 4 have an annular shape made of band-shaped metal plates, and the packing 5 also has an annular shape corresponding to these frames.

The main frame 3 has a plurality of bolts 6 welded to the center in the width direction on each side, facing the back side, and the sub frame 4 and packing 5 correspond to the bolts 6 on the main frame. Bolt through hole 7,
8 are formed respectively.

The width dimensions of the main frame 3 and the sub-frame 4 are set so that the entire outer periphery thereof evenly overlaps the hole edge a of the window hole.

The packing 5 has circumferential grooves 9 and 10 formed on its outer and inner circumferential surfaces. They are designed to fit together. However, the circumferential groove on the inner circumferential surface remains the same, but on the outer circumferential surface, the edge that follows the hole edge on either the outside or the outside of the window is connected, and the part that is attached to either the outside or the other is made into a separate piece. It can also be easily attached to a window.

In addition, packing requires that the groove sidewalls of the circumferential groove 10 on the inner circumferential surface be thick enough to protect the peripheral edge of the glass, but the edge formed on the outer circumferential surface to be attached to the edge of the window hole is There is no problem in making the edge thinner because it only serves the purpose of waterproofing.If the edge that fits the window hole edge of the packing is made thinner, the main frame and the subframe will be shaped like flat strips as shown in the figure. If this were done, the packing could not be held evenly, so the outside of these frames is bent in a step-like manner from the part where the bolt is installed or the part where the bolt passes through to the back side.

In order to construct a glass viewing window using the window frame A of the present invention having the above-mentioned structure, first, the circumferential groove 10 of the inner circumferential surface of the packing 5 is fitted into the outer circumferential edge of the window glass plate 11. Next, the main frame 3 is stacked on the front side of the packing 5, and the bolts 6 are inserted into the bolt holes 8 of the packing 5, and the window glass plate 1
1, the main frame 3 and packing 5 are assembled, and the combined body is fitted into the window hole 2 of the viewing window from the front side, and the packing 5 is inserted into the hole edge a of the window hole 2, and the main frame 3
Assign. Thus, with the edge connected to the outer peripheral surface of the packing 5 aligned with the hole edge a of the window hole 2, the sub-frame body 4 is stacked on the inner surface (back side) side of the packing 5, and the bolt 6 is inserted into the sub-frame. Bolt through hole 7 of body 4
The mounting of the window frame A is completed by inserting the nut 12 into the protruding tip of the bolt 6 from the rear side of the sub-frame body 4 and tightening it.

By tightening the nuts 12 to the bolts 6, the outer peripheral edges of the main frame 3 and the sub-frame 4 firmly clamp the hole edge a of the window hole 2 via the edge connected to the outer peripheral surface of the packing 5. do. And the bolt 6 is the window hole 2
However, it is located close to or in contact with the hole edge a of the window hole 2.

As explained above, according to the present invention, the main frame 3
Since the bolt 6 installed in the window hole 2 passes through the window hole 2, there is no need for the complicated work of drilling a bolt through hole at the edge of the window hole 2 as in the conventional method, and it is possible to insert the bolt through the hole edge. There is no problem of rust caused by drilling holes.

Nevertheless, by screwing the nuts 12 onto the bolts 6, the outer peripheries of the main frame 3 and the sub-frame 4 are connected to the outer periphery of the packing 5 through the connected edges to the holes of the window holes 2. It has a mounting structure that securely clamps the edge a, making it easy to install the window frame. and,
In this installed state, even if the packing 5 receives heat from an external fire, the packing 5 will only suffer burnout, and the bolt 6 is positioned so as to be close to or in contact with the edge a of the window hole 2. The bolts 6 support the window glass plate 11 with the main frame 3 and the sub-frame 4 left unburned on the hole edge a, which has the advantage of preventing the glass plate 11 from falling off.

[Brief explanation of drawings]

FIG. 1 is a front view of an example of a window frame in a box viewing window according to the present invention, and FIG. 2 is an enlarged, partially cutaway right side view of the same. A...Window frame, 3...Main frame body, 4...Sub-frame body, 5
... Packing, 6... Bolt, 7, 8... Bolt through hole, 9, 10... Peripheral groove of packing, 1...
...The front plate of the box, 2...The window hole for the peephole.

Claims (1)

[Scope of Claims] 1. An annular main frame 3 made of a metal plate, an annular sub-frame 4 made of a metal plate and arranged opposite to each other on the back side of the main frame 3, and both frames. It consists of an annular packing 5 interposed between 3 and 4, and bolts 6 are installed at appropriate intervals in the center of the width direction of the main frame 3 toward the back side, and the sub-frame 4 and The packing 5 is provided with bolt through holes 7 and 8 through which the bolts 6 are inserted, and a circumferential groove 10 that fits around the periphery of the window glass plate 11 is formed on the inner peripheral surface of the packing 5. The outer circumferential surface is connected with an edge that follows the hole edge a of the window hole 2, and the main frame 3 and the sub frame 4 have a width such that the outer circumference evenly overlaps the hole edge a of the window hole 2. The dimensions are set, and nuts 1 are attached to the bolts 6 from the back side of the sub-frame body 4.
2 are screwed together, the outer peripheral edges of the main frame 3 and the sub-frame 4 become attached to hold the hole edge a of the window hole 2 via the edge connected to the outer peripheral surface of the packing 5. . A window frame for a peephole such as a box, characterized in that, in the attached state, the bolt 6 is close to or in contact with the hole edge a of the window hole 2.