JPH0337271Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an electrical equipment box having an opening/closing part equipped with a sealing device, that is, an outer box housing electrical equipment, and a sealing device. The present invention relates to an electrical equipment box that is provided with an opening/closing part that isolates the outer box from the outside air and is configured to be openable and closable.

[Conventional technology]

An example of a device equipped with this type of electrical equipment box is an electrical equipment box installed under the floor of the body of an electric car.

Now, to explain this electrical equipment box as an example, FIG. 3 is a conceptual diagram showing the installation state of the electrical equipment box 1 installed under the floor of the electric car 100, and FIG. 5 is an enlarged view of the portion shown in FIG. 4.

In FIGS. 3 to 5, the electrical equipment box 1 includes:
Electrical equipment (not shown) is housed inside the outer box 1a constituting it, and is connected to each other by wiring such as electric wires or bus bars.

The equipment is connected to other electrical equipment via an externally provided insulating cleat 4 via an outfitting wire 3, and the outfitting wire 3 is connected to a duct 101 of the vehicle body.
It is stored inside.

An inspection cover 2 is provided on the outer box 1a of this electrical equipment box 1, and during inspection, this inspection cover 2
It is configured so that the condition of the internal equipment can be inspected by removing it.

This inspection cover 2 has a sealing device 2a, such as a rubber gasket, to make the electrical equipment dustproof and waterproof from the outside, and also has a latch receiver 5.
and latch 2b, the inspection cover 2 is configured to be easily attached and detached during inspection.

Further, reference numeral 104 is a shield plate for preventing electrical noise from leaking from the insulating cleat 4 and the outfitted electric wires 3.

[Problem that the invention attempts to solve]

When electrical noise such as spike noise occurs due to switching of main circuit elements such as thyristors in the electrical equipment box 1, this electrical noise is transmitted to non-metallic parts, that is, the outfitted wires 3 in FIG. , insulation cleat 4 and sealing device 2
From a, electrical noise 10a to 1 as shown by the arrow
0c leaks to the outside from the electrical equipment box 1 and is propagated to the signaling equipment 103 shown in FIG. 4, thereby having an adverse effect on the signaling equipment.

Therefore, in the conventional device, the electrical noise 10
A and 10c were shielded by providing a shield plate 104 on the vehicle body side. However, the problem was that it was difficult to shield it.

This idea was made in order to solve the above problems, and it was designed to create a sealing device that does not hinder the attachment and detachment of opening/closing members such as inspection covers, and also prevents electrical noise from leaking from the sealing device section. An object of the present invention is to obtain an electrical equipment box having an opening/closing part.

[Means for solving problems]

An electrical equipment box having an opening/closing part equipped with a sealing device according to this invention has a shield plate fixed to one of the outer box and the opening/closing member and in contact with the other, on at least one of the outside and inside of the part where the sealing device comes into contact. has been established.

[Effect]

Since this device is configured as described above, when the opening/closing member is opened/closed, the shield member comes into contact with either the outer box or one of the opening/closing member in the final stage of closing the opening/closing member, so that there is no hindrance to opening/closing. It can be opened and closed without any interference, and it also shields electrical noise leaking from between the sealing device and the other side of the seal, either inside or outside the sealing device.

〔Example〕

This invention will be explained below based on FIG. 1 showing a first embodiment thereof.

In the figure, reference numeral 21 denotes a shield plate according to this invention, and the shield plate 21 is attached to the outer box 1a in contact with the outer case 1a at the contact surface 21a, and has one end at the contact surface 21b that prevents opening/closing of an opening/closing member such as the inspection cover 2. The other end is connected to the shield plate 104 on the vehicle body side.

Since this embodiment is constructed as described above, the inspection cover 2 can be opened and closed as before, and the inspection cover 2, the shield plate 21, and the shield plate 104 on the vehicle body side are continuously connected. , Therefore, all of the electrical noises 10a to 10c that have leaked in the past are caused by the shield plates 21 and 1.
04, and as a result, the signal equipment 103
are completely shielded from electrical noise 10a-10c and therefore have no adverse effect on signaling equipment 103.

Furthermore, it goes without saying that the inspection cover 2 can be attached and detached at the time of inspection as easily as in the conventional case, as described above.

Next, FIG. 2 shows a second embodiment of this invention, in which a shield plate 31 is installed in contact with the inside of the outer box 1a, and the ends of the shield plate 31 are The inner surface contacts the inner surface of the inspection cover 2, and shields electrical noise from the contact surface of the sealing device 2a.

Therefore, this second embodiment also has the same effects as the first embodiment.

[Effect of idea]

As described above, according to this invention, a shield plate configured to be fixed on one side and in contact with the other side between the outer box of the electrical equipment box and the opening/closing member provided via the sealing device is installed on at least the inner and outer sides. Since it is installed in either of the electrical equipment boxes, electrical noise can be confined within the electrical equipment box and shielded from the outside.
This has the effect that it does not adversely affect signal equipment, etc., and that it is possible to obtain an electrical equipment box having an opening/closing part equipped with a sealing device that allows the opening/closing member to be easily attached and detached as in the conventional case.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional schematic explanatory external view of main parts showing a first embodiment of this invention, Fig. 2 is a schematic cross-sectional explanatory external view of main parts showing a second embodiment of this invention, and Fig. 3 is a car body of an electric car. FIG. 4 is a cross-sectional view of the conventional device taken along the - line in FIG. 3, and FIG. 5 is an enlarged view of the portion shown in FIG. 4. 1...Electrical equipment box, 1a...Outer box, 2...Opening/closing member (inspection cover), 2a...Sealing device, 21,
31, 104...shield plate, 21a, 21b...
...Contact surface. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An electrical equipment box that has an outer box for storing electrical equipment and an opening/closing member that isolates the inside of the outer box from the outside air via a sealing device and is configured to be openable and closable, On at least one of the outside and inside of the part that the sealing device contacts,
An electrical equipment box having an opening/closing part equipped with a sealing device, characterized in that a shield plate is provided which is fixed to one of the outer box and the opening/closing member and is in contact with the other. (2) Equipped with the sealing device according to claim 1 of the utility model registration claim, in which at least one of the outside and the inside of the contacting part of the sealing device provided with the shield plate is both the outside and the inside. Electrical equipment box with opening and closing parts.