JPS6342067B2 - - 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 conventional window frames for viewing windows such as boxes, and its purpose is to prevent the window glass from detaching even if a part of the window frame melts due to the heat of a fire. In addition, although the window frame is provided with bolts, it is not necessary to form bolt holes on the edge of the hole of the viewing window.

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

FIG. 1 is a front view of window frame A, and FIG. 2 is an enlarged partially cutaway side view taken along line - in FIG.
1 is an annular main frame made of a soft or semi-hard elastic material such as rubber or synthetic resin; 2 is an annular metal core frame that is assembled and connected to the main frame 1; 3 is the main frame 1
An annular support frame 4 made of a metal plate attached to the back side of the main frame 1 is a packing interposed between the main frame body 1 and the support frame 3.

As enlarged in FIG. 3, the main frame body 1 has a core frame body 2.
A glass support frame section 12 having a circumferential groove 121 on the inner circumferential surface is integrally connected to the inner circumference side portion of the back plate section 111 of the hollow main frame section 11 having a shape that tightly envelops the main plate section 21. However, the hollow main frame part 11
The inner circumferential half of the back plate portion 111 and the groove side wall on the hollow main frame portion 12 side of the circumferential groove 121 formed in the glass support frame portion 12 are integrated (common).

Further, a split-open annular groove 113 communicating with the hollow part 112 is formed in the back plate part 111 of the hollow main frame part 11 at the center in the width direction.

The core frame body 2 has an annular main plate portion 21 made of a flat metal plate.
A bolt 22 facing toward the back side is installed in the widthwise central portion of each side.

The backing frame 3 has a bolt through hole 3 in a portion corresponding to the bolt 22 of the core frame body 2 at the central part in the width direction.
1 is provided.

This invention is as described above, and the window frame includes an annular main frame made of a soft or semi-hard elastic material, an annular metal core frame incorporated into the main frame, and a back surface of the main frame. and an annular support frame made of a metal plate attached to the core frame body, and the main frame part has an inner circumferential surface on the inner circumferential side of the back plate part of the hollow main frame part that should tightly cover the main plate part of the core frame body. The glass supporting frame part forming a circumferential groove is integrally connected to the back plate part of the hollow main frame part, and the back plate part of the hollow main frame part has a split-open annular groove communicating with the hollow part at the center in the width direction. The core frame body is made of an annular main plate made of a flat metal plate, and bolts are planted on each side of the main frame in the width direction toward the back. It is characterized in that packing is interposed between the plates on the outer peripheral side of the glass support frame part in the main frame body, and the main plate part 21 in the core frame body 2 is inserted into the hollow part 112 of the hollow main plate part 11 in the main frame body 1. is forcibly inserted to make the bolt 22 protrude from the split-open annular groove 113 formed in the back plate part 111 of the hollow main plate part 11, and in this state, the glass support frame part 1 existing on the back face of the main frame part 1 is
Fitting the peripheral edge of the window glass plate 5 into the peripheral groove 121 of 2,
Insert this combined body into the viewing window hole 61 of the front plate 6 of the box from the front side, together with the bolts 22 of the core frame body, and then stack the backing frame 3 from the back side of the window hole. The bolt 22 is passed through the bolt through hole 31 formed in the backing frame 3, and the packing 4 is interposed between the hole edge of the window hole 61 and the backing frame 3, and the nut 23 is screwed into the bolt and fastened. According to this configuration, the frame exposed on the outside of the viewing window is made of an elastic material such as rubber or synthetic resin, which prevents the appearance from deteriorating due to rust, which is seen with metal products. In addition, there is a core frame inside the frame exposed on the front side, and the window hole is held between the core frame and the guard frame, and the glass plate is also supported, so in the event of a fire, the heat will be absorbed. This has the effect that even if the main frame melts, the glass plate will not come off and there is no risk of the viewing window being destroyed.

Also, this window frame is fixed to the window hole by fastening bolts, but since these bolts are inside the window hole and in contact with the edge of the window hole, the edge of the window hole is not attached to the edge of the window hole as seen in conventional bolt fastening methods. There is no need for the complicated work of drilling holes for bolts, which has the effect of making the work easier.

[Brief explanation of the drawing]

FIG. 1 is a front view of an example of a window frame according to the present invention, FIG. 2 is an enlarged partially cutaway sectional view taken along the line of FIG. 1, and FIG. 3 is an enlarged sectional view of only a portion of the main frame. A...Window frame, 1...Main frame body, 11...Hollow main plate part, 1
DESCRIPTION OF SYMBOLS 11... Rear plate part, 112... Hollow part, 113... Annular groove, 12... Glass support frame part, 121... Peripheral groove, 2...
Core frame body, 21... Main plate part, 22... Bolt, 3... Covering frame, 31... Bolt through hole, 4... Packing, 5...
Window glass plate, 6...front plate of box, 61...window hole.

Claims (1)

[Claims] 1 Consists of an annular metal core frame built into an annular main frame made of a soft or semi-hard elastic material, and an annular support frame made of a metal plate attached to the back of the main frame. A glass support that forms a circumferential groove on the inner circumferential surface of the back plate portion of the hollow main frame portion on the inner circumferential side of the back plate portion of the hollow main frame portion that is to tightly cover the main plate portion of the core frame body. The frame part is integrally connected, and the back plate part of the hollow main frame part is provided with a split-open annular groove communicating with the hollow part at the center in the width direction, and the core frame body is made of a metal flat plate on each side of the annular main plate part. A bolt is planted in the center of the width direction toward the back, a hole is provided in the backing frame for the bolt to pass through, and a bolt is installed between the main frame and the backing plate on the outer periphery of the glass support frame in the main frame. A window frame for a peephole such as a box, which is characterized by having the following: