JPS6162667A - Pressure-resisting explosion-proof container - Google Patents

Abstract

PURPOSE:To obtain a pressure-resisting explosion-proof container having a large ratio of internal capacity to weight by providing a cylinder portion of the container, which is oval in section and is formed thicker at the longitudinal center wall portions thereof, and connecting the central wall portions to each other by a rib. CONSTITUTION:The sectional external form of a cylinder portion of a container 12 is substantially oval, and the central wall portions 12A thereof in the longitudinal direction X are formed thicker. The internal space forms a storing portion. The container 12 is provided with a substantially crescent rib 16 for connecting the longitudinal central wall portions 12A of the oval shape. A flange 17 having the substantially rectangular outer peripheral shape and a convex stepped engaging portion 18 at the longitudinal X edge is fixed to the opening end side of the container 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a pressure-resistant explosion-proof container that houses a printed board or the like having electrical components mounted therein.

(Prior art) Conventionally, as a pressure-resistant explosion-proof container, for example, as shown in Fig. 4 (a)
A container whose main body is a cylindrical container (circular cross section) 1 as shown in FIG.
It is known that the main body is Each main body 1, 2 stores a printed board 3 etc. inside the room, and has a lid (not shown) at the opening end.
It is configured to be sealed by locking it.

In these pressure-resistant and explosion-proof containers, even if the gas that enters the main body (container) 1°2 were to explode, the container may be destroyed or the flame may escape through the gap between the main body and the lid, causing an explosion outside the container. There is no way to ignite the gas.

(Problems to be Solved by the Invention) However, although the soundproof pressure-resistant explosion-proof container has an excellent explosion-proof structure and a high ratio of content vA/if m,
When the board is stored, a large play space S is created as shown in FIG. 4 (A), so there is a problem in that the internal volume becomes substantially smaller. Furthermore, the cylindrical container has a problem in that it is difficult to unify the design with other devices. On the other hand, the latter type of pressure-resistant explosion-proof container has a large wall thickness for the main body, etc. to achieve pressure-resistant groove construction, so there is a problem that the internal volume / weight ratio becomes small (the container becomes heavier). .

The present invention has been made in view of these points, and its purpose is to have a large ratio of internal volume/ff1m, to make effective use of the internal volume, and to achieve design consistency with other equipment.
The purpose of the present invention is to provide a pressure-resistant and explosion-proof container that is easy to remove.

(Means for Solving the Problems) The present invention, which solves the above-mentioned problems, has a local cross-sectional shape having a substantially oval shape, a central wall portion in the longitudinal direction of the oval shape being thick, and A main body consisting of a container whose central wall portions are connected by ribs, a flange disposed on the front end side of the container, the outer peripheral shape of which is approximately rectangular, and whose longitudinal edge forms a convex step engagement part; and a lid having substantially the same outer peripheral shape as the outer peripheral shape of the flange, and a lid having a longitudinal edge formed with a concave step engaging portion that fits into the convex step engaging portion of the flange. It is something.

(Example of fruit eggplant) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 and FIG. 2 are diagrams showing one embodiment of the present invention.
Figure (a) is a front view of the main unit, Figure 1 (b) is Figure 1 (a)
ΔA sectional view of Figure 1 (C) is BB11 of Figure 1 (B)
1'I side view, Figure 2 (A) is the front view of the lid, Figure 2 (B)
is a CC sectional view of Fig. 2 (A), and Fig. 2 (C) is a CC sectional view of Fig. 2 (A).
It is a DDO7i side view of (b).

In these figures, 11 is a main body consisting of a cast-metal container 12 with one end open and the other end closed, and a flange 17, and 13 is a cast-metal lid having tempered glass windows 14 and 15. The outer shape of the cross section of the cylindrical portion of the container 12 is approximately oval, and the central wall portion 12A of the oval in the longitudinal direction X is within the thickness. The internal space forms the storage section (inner volume) (
(See Figure 1 (c)). Further, the container 12 is provided with a substantially crescent-shaped rib 16 at the center of the oval shape in the longitudinal direction X, which connects the central wall portion 12A. Further, on the open end side of the container 12, a flange 17 having a substantially rectangular outer circumferential shape and a convex step engaging portion 18 at the edge in the longitudinal direction X is provided with means (not shown).
For example, it is fixed with screws). This flange 17
A substantially rectangular through hole is bored in the center of the main body, forming an opening of the main body. The lid 13 is provided with a rib 2C that bisects the longitudinal direction X and a recessed step engagement portion 22 formed on the edge 21 in the longitudinal direction As expected, the concave step engagement portion 22 is fitted into the convex step engagement portion 18.

Incidentally, a pressure-resistant explosion-proof container usually has a locking structure for fixing the above-mentioned mated state and a terminal structure for connecting an electric circuit inside the container to an external electric circuit. These are omitted in Figure 2.

In such a pressure-resistant and explosion-proof container, when the container 12 receives internal pressure, a force acts to widen the short side Y (narrow direction) of the oval shape of the main body 11. is thick, and the ribs 16 connecting the central wall portions 12A act as reinforcing beams, and the concave step engaging portion 22 of the lid 13 presses the convex step engaging portion 18 of the main body 11 from the outside. In other words, the pressure-resistant explosion-proof container consisting of the main body 11 and [13] takes advantage of the excellent internal pressure resistance of a cylindrical container, but also overcomes the disadvantages of a cylindrical container in terms of thickness. The central wall portion 12A and crescent-shaped ribs 16 are provided to compensate for the desired pressure-resistant and explosion-proof characteristics.The interior of the main body 11 has a shape similar to that of a box-shaped container (the crescent-shaped ribs are , does not interfere with indoor use), and the effective indoor utilization is almost the same as in the case of a box-shaped container.Incidentally, the internal volume / vJ'1171 mday in the embodiment shown in Figures 1 and 2 is The ratio is approximately twice that of the conventional example.

(Effects of the Invention) As explained above, according to the present invention, it is possible to increase the ratio of internal volume/manpower and to utilize the internal volume effectively. Further, since the outer peripheral surface of the joint surface is rectangular, that is, the container is box-shaped when viewed from the front, it is easy to unify the design with other devices.

[Brief explanation of drawings]

FIGS. 1 to 3 are block diagrams showing one embodiment of the present invention, and FIG. 4 is a groove diagram showing a conventional example. DESCRIPTION OF SYMBOLS 11... Main body 12... Approximately oval cross-sectional container 12A... Center wall portion 13... Lid 16... Approximately crescent-shaped rib 18... Convex step engaging portion 20... Rib 22 ... Concave step engagement part correction Fig. 2 (A) (0) (Han 1 -' ] 3 Third medical suspension Fig. 4

Claims (1)

[Claims] A container in which the outer shape of the cylindrical section is approximately oval in shape, the central wall in the longitudinal direction of the oval shape is formed thickly, and the central wall is connected by ribs, and the container is disposed on the front end side of the container. a main body consisting of a flange having a substantially rectangular outer circumferential shape and a longitudinal edge forming a convex step engaging portion; 1. A pressure-resistant explosion-proof container comprising: a lid having a concave step-engaging portion that fits into a convex step-engaging portion of a flange;