JPH0613529Y2 - Closed switchboard Double door packing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an improvement of a packing device used for a superposed part of a double door of a closed switchboard.

<Prior Art> A closed switchboard called a dustproof type and a dustproof type is generally known in which dust and dust are protected from entering the inside. In this kind of closed switchboard, a packing is interposed between the box body and the door for sealing, but when the door is a double-opening type, the sealing structure of the overlapping part becomes a difficult problem.

5 and 6 are a front view and a side view of a dustproof and dustproof closed switchboard equipped with a double door, and a conventional structure of the overlapping portions of the doors as seen from arrows AA 'and BB'. At No. 7
Shown in Figures and 8. FIG. 7 shows the door in a state in which the upper bent portion (a portion shown in FIG. 8) is removed for the sake of clarity.

As shown in these figures, the packing (3A) is attached to the inner surface of the double doors (2A) and (2B) so as to come into contact with the draining plate (11) provided in a frame shape on the door mounting side of the box (1). ) Is stuck. A part of the draining plate (11) where the overlapping part of the double-opening door abuts is formed with a recess as shown in Fig. 7, and the packing (4 ') is fixed to the draining plate (11) side along the recess. Has been done. This packing (4 ') is a solid and plate-like material having elasticity such as foamed rubber. Then the box (1) and the door (2A) ・ (2
It is sealed between B).

<Problems to be solved by the invention> By the way, as shown in Fig. 7, the recessed portion of the draining plate (11) is not always caused by an error generated during the can making of the box body (1) and the doors (2A) and (2B). However, the overlapping portion of the door (2A) does not necessarily fit in the left and right even positions, and may shift to the left or right as shown in FIG. In this case, the left side of the packing (4 ') is the door
The overlapped portion of (2A) causes a state of being pressed while excessively rubbing, and eventually peels off. On the other hand, the right side portion of the packing (4 ') has a gap between it and the overlapping portion of the door (2A), so that it cannot be completely sealed. For this reason,
Adjust the doors (2A) and (2B) into the recesses of the draining plate (11) to close the doors (2A) and
It is necessary to fit the overlapping portion of (2B) into the positions that are even on the left and right, which is disadvantageous if it takes a lot of time and effort.

<Means for Solving Problems> The present invention has been made in view of the above circumstances, and a recess is formed at a portion of the draining plate where the overlapping portions of the double doors abut, and both ends of the recess are formed. To the inside of the mounting part, and three outside surfaces that are mounted inside the mounting part and fixed to the three wall surfaces of the recess, and the two-sided opening type with the double-sided door closed. Closed switchboard consisting of a hollow rubber packing that has three inner surfaces that are in close contact with each other along the curved surface of the overlapping portion of the door, and two front surfaces that are prevented from expanding outward by the restraining piece. It features a double door type packing device.

<Operation> By using a hollow rubber packing, even if the overlapping part of the door does not fit into the recesses of the draining plate in the left and right even positions, the inner surface of the rubber packing should be along the curved surface of the overlapping part. Always close.

<Embodiment> An embodiment of the present invention will be described with reference to FIGS. 1 is a view corresponding to FIG. 7 taken along the arrow AA ′ in FIG. 5, FIG. 2 is a view of a packing attachment portion, and FIGS. 3 and 4 are views of the packing. In these figures, the same reference numerals as those in FIGS. 7 to 9 designate the same or corresponding parts.

As shown in FIG. 2, the puckkin mounting portion is formed with recesses at the portions where the overlapping portions of the double doors (2A) and (2B) of the draining plate (11) come into contact with each other, and the recesses are directed inward at both ends of the recesses. It is configured by providing deterrent pieces (11a) and (11b). And, as shown in the plan view of FIG. 3 and the side view of FIG. 4, the packing installed in the mounting portion has three wall surfaces (11c), (11d), (11) of the recess.
3) The three outer surfaces (4a), (4b), and (4c) fixed to e) and the outer surfaces (4a), (4b), and (4c) are in close contact with each other along the curved surface of the overlapping portion of the door with the door closed.
Inner surface (4d), (4e), (4f), and the restraining pieces (11a), (11b)
Two front sides (4g), which prevent expansion to the outside by
It is a character-shaped hollow rubber packing having (4h). First
The figure shows a state in which the rubber packing (4) is installed in the mounting portion and the double doors are closed. It should be noted that this drawing shows a state in which the overlapping portions of the door are fitted in the recesses of the draining plate (11) at evenly left and right positions.

By incorporating a hollow rubber packing as the configuration of the mounting portion as described above, for example, when the door is closed with the door shifted to the left side, the rubber packing (4 Although the left chamber (41) of () is compressed, the front side (4g) of the rubber packing is prevented from expanding forward by the restraining piece (11a), so that the air in the left chamber (41) is compressed. Move through 42) into the right chamber (43). The front side (4h) of the other side of the rubber packing is also restrained from expanding forward by the other restraining piece (11b), so the air pushes the inner side (4f) to the left and the doors are superposed. Close so that there is no gap between the parts. As a result, the inner side surfaces (4d), (4e), and (4f) of the packing (4) come into close contact with each other along the curved surface of the overlapping portion. Although the above description is for the case where the door is displaced to the left side, even when the door is displaced to the right side, the door acts in the opposite direction and the door is also closely contacted.

<Effects of the Invention> According to the present invention, the inner surface of the rubber packing is overlapped even if the door overlapping portion is closed in a state in which it is slightly shifted left or right without being fitted into the recessed portion of the draining plate at the left and right even positions. Since they are always in close contact with each other along the bent surface of the mating portion, they do not peel off or form a gap unlike the conventional solid packing, and thus complete sealing can be achieved. For this reason, the effect is obtained unless it takes time to adjust the door.

[Brief description of drawings]

1 to 4 are views of an embodiment of the present invention. FIG. 1 is a view showing a state in which a packing is mounted, FIG. 2 is a view of a mounting portion, and FIGS. 3 and 4 are planes and side surfaces of the packing. 5 and 6 are external views of the closed switchboard, FIGS. 7 to 9 are conventional structural views, and FIG. 7 is a view taken along the line AA ′ of FIG.
The drawing is a view as seen from the arrow BB 'in FIG. 5, and FIG. 9 is a drawing showing the state in which the door position in FIG. 7 is displaced. 1 ... Box, 2A / 2B ... Door 4 ... Rubber packing, 11 ... Drainer 11b ... Suppressing piece

Claims (1)

[Scope of utility model registration request] 1. A closed switchboard equipped with a double door.
A packing mounting part having recesses formed at portions of the draining plate with which the overlapping parts of the double doors abut, and at both ends of the recesses, blocking pieces provided inwardly, and the recess mounted inside the mounting part. The three outer side surfaces fixed to the three wall surfaces, the three inner side surfaces that are in close contact with each other along the curved surface of the overlapping portion of the double-opening type door when the double-opening type door is closed, and the restraining piece. A packing device for a double door with a closed switchboard, which is composed of a hollow rubber packing having a front shape that has two front side surfaces that are prevented from expanding outward.