JPH02151237A - Terminal box device - Google Patents

Abstract

PURPOSE:To secure a packing to a flange without adhesive which is a cause of bad workability by arranging a fixing section surrounding either one of the circumferences of the flange on at least a portion of the outer circumference of the packing thereby providing a C-shaped cross-section. CONSTITUTION:A C-shaped stopping section 19 is arranged on the outer circumference of a packing 18 made of elastic member such as rubber, and the stop section 19 surrounds the outer circumference of the flange 2 of a terminal box 1. The packing 18 is provided with a hole 18a for a screw 7. When the packing 18 made of elastic material is hooked to the outer circumference of the flange 2 of the terminal box 1 through the stop section 19, the packing 18 is secured with its profile to the terminal box 1. Since the packing 18 can be moved slightly with respect to the terminal box 1 when a bolt 7 is tightened in order to fix a terminal cover 4, alignment of the hole 18a or a screw hole on the side of the terminal box can be facilitated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention involves forming a terminal box and a terminal cover by drawing a thin steel plate, and interposing an annular packing on the flange surface where the two come into contact. This invention relates to a terminal box device.

[Conventional technology]

FIG. 5 is a sectional view of a conventional terminal box device, and FIG. 6 is a plan view of a packing used in FIG.

In these drawings, a terminal box 1 equipped with an internal cable outlet 1a and an external cable outlet ib is provided with a flange 2 facing the outer periphery around the terminal box 1, and is formed by drawing a thin steel plate. Ru.

The terminal cover 4, which is in contact with the flange 2 of the terminal box L and has a flange 3 facing the outer periphery, has a slight rising portion 5 from the flange 3 in a direction perpendicular to the surface thereof. It covers the outer periphery of the flange 2. A rising portion 5 at one location above the terminal cover 4 is further provided with a bent portion 6 on the inside, which goes around to the back side of the flange 2 of the mating terminal box 1 and locks this. Therefore, in order to fix the terminal cover 4 to the terminal box 1, it is necessary to tighten only one of the lower screws 7 into a tapped hole formed by a burring or the like in the terminal box 1. There is also one that does not have the bent portion 6 and uses two or more screws 7.

Flange 2 of the terminal box 1 and flange 3 of the terminal cover 4
A flat gasket 8 having an annular rectangular shape as shown in the drawing is interposed on the abutting surface of the housing, and has a drip-proof or dust-proof function. The packing 8 is provided with a hole 8a for the screw 7. The gasket 8 is adhered to the flange in advance to facilitate assembly and disassembly work, and is also adhered to the terminal cover 4 having a raised portion 5 for easy positioning.

The width of the periphery of the patch is not much wider than the circumference. Further, the flange 2 on the terminal box side, the flange 3 on the terminal cover side, and the rising portion 5 rising from the flange are joined with a certain degree of curvature in the drawing process. Therefore, the position of the gasket 8 is not necessarily fixed, and the gasket 8 must be positioned, and bonding is absolutely necessary.

Also, the packing 8 may shift or become wavy while the adhesive is curing, and when you try to install it, the position of the hole 8a for the screw 7, the slotted hole in the terminal box 1, etc. may be misaligned. Yes, the terminal box and terminal cover are attached while the adhesive is semi-hardened.

[Problem to be solved by the invention] The above-mentioned conventional technology has the following problems.

a) Since there are packings in the direction perpendicular to the surfaces of both flanges, there is no direct contact between the terminal box and the terminal cover. However, since the positioning of the two parts is not reliable in the direction of the flange surface, there may be a slight metal touch, which causes resonance under the influence of the vibration of the rotating electrical machine, resulting in increased noise.

b) The use of adhesives is an inherently unstable operation.

Also, too much adhesive on the terminal cover side wraps around the terminal box side, causing the gasket to adhere to both and harden. Therefore, the gasket often comes off when removing the terminal cover.

C) When the seal is attached with adhesive, it is no longer clear from the outside whether it is in the correct position or not, and there is a risk that it will be completed in an incorrect position.

The purpose of this invention is to reliably prevent metal contact between the two when using terminal boxes and terminal covers made by drawing, and to fix the position of the packing without adhering the packing.
The object of the present invention is to provide a terminal box device with good workability.

[Means to solve the problem]

The terminal box device of the present invention is a terminal box device in which flanges facing the outer periphery are formed around each of the terminal box and the terminal cover, and the flanges are brought into contact with each other via an annular packing made of an elastic material. A locking portion surrounding the outer periphery of either one of the flanges is provided on at least a portion of the outer periphery of the packing to form a U-shaped cross section.

[Effect]

Since the locking part with a U-shaped cross section provided on the outer periphery of the packing surrounds the outer periphery of the flange of either the terminal box or the terminal cover, the packing is fixed to the flange due to its own shape, eliminating the need for adhesive. . Even if there is a rising part 5 on the flange of the terminal cover, the locking part is interposed so that there is no metal touch in the surface direction of the flange.

〔Example〕

Fig. 1 is a partially enlarged sectional view of the embodiment, Fig. 2 is a sectional view showing the whole of Fig. 1, Fig. 3 is a plan view of the packing in Fig. 1, and Fig. 4 is a diagram of the packing of the second embodiment. FIG.

In these drawings, the same reference numerals as in the conventional example have approximately the same functions. A terminal cover 4 having a rising portion 5, an upper bent portion 6, and a flange 3 is attached to a terminal box 1 equipped with cable outlet ports 1a, lb and a flange 2 directed toward the outer periphery with screws 7. Installed. Both flanges 2.3 are drawn products made of thin steel sheets, and a packing 18 is interposed between the flanges 2.3.

This packing 18 has a distinctive shape.

A locking portion 19 is provided on the outer periphery of the gasket 18 made of an elastic material such as rubber, and has a U-shaped cross section.
surrounds the outer periphery of the flange 2 of the terminal box 1. The packing 18 is provided with a hole 18a for the screw 7. The inner circumference of the concave portion of the U-shaped cross section of the locking portion 19 is preferably made slightly smaller than the outer circumference of the flange 2.

The packing 18 made of such an elastic material is attached to its locking portion 1.
When hooked onto the outer periphery of the flange 2 of the terminal box 1 at 9, the gasket 18 is fixed to the terminal box 1 in its own shape. When attaching the terminal cover 4, when tightening the bolts 7, the gasket 18 can move a little with respect to the terminal box 1, so alignment with the hole 18a and the screw hole on the terminal box 1 side is easy.

The one in Figure 3 has locking parts 19 all around the circumference except for the hole 18a, but the one in Figure 4 has locking parts 19 only at the four corners, and if anything, the latter is easier to work with. , can be commonly used in terminal boxes with bent parts that use conventional packing. Although the one in FIG. 3 does not have a locking portion 19 in the hole 18a, a locking portion may also be provided here.

In addition, although the terminal box 4 with the rising portion 5 has been described, a terminal box with only the flange 3 without the rising portion 5 may also be used.
This patch can be used. At this time, the locking portion 19 may be hooked onto the flange 3 on the terminal cover 4 side in the opposite direction as shown. If the locking part 19 is provided around the entire circumference and attached to the flange 3, and a rising part surrounding the outer periphery of the flange 2 of the terminal box 1 is provided, the terminal cover can be dust-proof even without the rising part 5.
It has a waterproof effect and makes drawing the terminal cover easier.

〔Effect of the invention〕

The terminal box device of the present invention is a terminal box device in which flanges facing the outer periphery are formed around each of the terminal box and the terminal cover, and the flanges are brought into contact with each other via an annular packing made of an elastic material. , Since at least a part of the outer periphery of the packing is provided with a locking part that surrounds the outer periphery of one of the flanges and has a U-shaped cross section, it is possible to avoid using adhesives that are difficult to work with. This has the effect of fixing the packing to the flange, and especially if the terminal cover has a dustproof or waterproof raised part, the terminal box and terminal cover may come into metal contact in the direction of the flange surface, causing a source of vibration. It has the effect of preventing

[Brief explanation of the drawing]

Fig. 1 is a partially enlarged sectional view of the embodiment, Fig. 2 is a sectional view showing the whole of Fig. 1, Fig. 3 is a plan view of the packing in Fig. 1, and Fig. 4 is a diagram of the packing of the second embodiment. A plan view,
Figure 5 is a cross-sectional view of a conventional terminal box device, and Figure 6 is a cross-sectional view of a conventional terminal box device.
It is a top view of the packing used in the figure. 1... Terminal box, 2.3... Flange, 4... Terminal cover 8.18... Packing, 19... Locking part. Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1) A terminal box device in which a terminal box and a terminal cover each have a flange facing toward the outer periphery, and the flanges are brought into contact with each other via an annular packing made of an elastic material. . A terminal box device, wherein a locking portion surrounding the outer periphery of one of the flanges is provided on at least a part of the outer periphery of the packing to form a U-shaped cross section.