JPH1187941A - Explosion-proof container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure, in which a transparent window used in an explosion-proof container is small, and a fixing material is applied evenly, without requiring glass breakage prevention and special water-proof measures. SOLUTION: An explosion-proof container 13 has an explosion structure, in which an opening is provided in one face of the container 13 and a glass sheet 1 is fixed in the opening. The container 13 has a holder 14 provided in the opening and a space formed along the sides of the glass sheet 1 and filled with a fixing material 16. The holder 14 and a glass holder 12 are fixed via a joint sheet packing 9. Thus, it is unnecessary to provide a planar joint for jointing the glass sheet and the packing which has a length determined by the explosion-proof structure, the glass sheet can be made small, and the field of view of the transparent window can be made wide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fixing mechanism used for a transparent window of an explosion-proof container for housing a television camera or the like.

[0002]

2. Description of the Related Art FIGS. 3 and 4 are views showing a conventional explosion-proof container having a structure for mounting glass on the explosion-proof container.
Is a front view, and FIG. 4 is a sectional view.

[0003] The glass 1 is housed in a sandwiching holder 4 by a metal packing 2 and a metal packing 3, and the holder 4 is fixed to a container 5 by bolts 6. Although not shown, a television camera and the like are housed in this.

In this case, the length of the joint surface 7 formed by the metal packing 3 needs to have a dimension determined by the explosion-proof structure, so that the glass 1 needs to be enlarged in order to widen the field of view. Therefore, the holder 4 and the container 5 also become large. Further, since metal packing must be used for the joint surface 7, there is a possibility that the glass may be damaged by the tightening of the bolts 6.

[0005] In addition, in the case of outdoor equipment, since a waterproof treatment is required, a special waterproof treatment in which silicon rubber or the like is filled between a metal packing and glass has been required.

[0006]

In the above-mentioned prior art,
The problem that the bonding surface 7 is large, the glass may be damaged at the time of fixing,
In addition, there is a need for a special waterproof treatment, and further, there is a problem such as an improvement in processing accuracy of the metal packing.

SUMMARY OF THE INVENTION An object of the present invention is to fix and join glass used for a transparent window of an explosion-proof container to a container with an adhesive material in order to solve these problems.

[0008]

According to the present invention, in order to achieve the above object, a glass used for a transparent window is fixedly joined to an explosion-proof container by a fixing material.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIG. 1 is a sectional view, and FIG. 2 is a front view.

FIG. 1 shows an example in which the fixed bonding of the glass of the present invention is used for a transparent window of a camera case having a flameproof structure.

In both figures, 9 and 10 are joint sheet packings, 11 is a fixing portion, 12 is a holder, 13 is a container, 14 is a press fitting, and 15 is a TV camera.

The glass 1 is housed in a sandwiching holder 12 by means of a joint sheet packing 9 and a joint sheet packing 10, and a fixing material 16 is filled in a fixing portion 11 and fixedly joined. Furthermore, it is securely fixed by the holding metal 14 and is fixed to the container 13 having the explosion-proof structure. The glass 1 is a tempered glass because it is used as a transparent window of an explosion-proof structure, and requires a certain thickness to further increase the strength. Since the fixed bonding length of the explosion-proof structure container requires a fixed fixing length, the thickness of the glass 1 (that is, approximately the length of the fixing portion 11) can be set as the fixing length. Further, in this embodiment, in order to eliminate backlash between the glass 1 and the fixing portion 11 of the holder 12, the fixing material 1
A part of the front of the holder 12 was stepped so as to substantially coincide with the outer diameter of the glass 1 so that 6 could be uniformly filled in the fixing portion 11.

The holder 12, the holding member 14, and the container 13 may be fixed by a bolt (not shown), an adhesive, or a screw-in type.

In the above embodiment, the entire shape of the container 13 is cylindrical. However, the present invention is not limited to this. Further, the structure of the mounting portion of the glass 1 may be a simple structure including a holder and a container as in the related art.

[0015]

According to the present invention, the glass used for the transparent window of the explosion-proof container can be made smaller and the field of view can be widened. Also, the container itself can be made smaller. Furthermore, since the joint sheet packing can be used for the packing, breakage of the glass can be prevented, and no special waterproof treatment is required.

By reducing the gap between the glass and a part of the holder, there are a number of advantages such as the play being eliminated and the fixing portion being uniformly filled with the fixing material.

[Brief description of the drawings]

FIG. 1 is a sectional view of an explosion-proof container according to an embodiment of the present invention.

FIG. 2 is a front view of an explosion-proof container according to one embodiment of the present invention.

FIG. 3 is a front view of a conventional explosion-proof container.

FIG. 4 is a sectional view of a conventional explosion-proof container.

[Explanation of symbols]

1 Glass, 9,10 Joint sheet packing, 1
1 Fixed part, 12 Holder, 13 Container, 14 Holder, 15 TV camera.

Claims (1)

[Claims] 1. An explosion-proof structure, comprising: an explosion-proof structure, wherein one of the containers is provided with an opening, and glass is fixed to the opening, wherein the container, a holding portion provided at the opening of the container, and the glass The side of the has a space that can be filled with the adhesive material,
An explosion-proof container comprising: a glass holder fixed to glass with a fixing material; and the holding portion and the glass holder fixed via a joint sheet packing.