JPS5931015Y2 - Housing grounding structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for office electronic equipment.

Conventional electronic equipment has a lower device, as shown in Figure 1 a, l).
2 has the upper device 1 placed on it, and the upper device 1
is attached to.

, are electrically insulated by rubber legs 3.

However, in order to increase the electrostatic withstand voltage in an electronic device consisting of a plurality of divided devices, it is necessary to ensure electrical continuity between the casings.

As a method for establishing electrical continuity between these two cases, as shown in Figure 2a, 1), the electric wire 4 is screwed to the metal plated part of the case and electrically connected. However, it has the disadvantage that it must be removed and reattached during transportation.

Further, as shown in Figure 3a and l), the leaf spring 5 is screwed to the metal plated part on the top plate of the lower housing 2, and brought into contact with the metal plated part on the bottom of the upper housing 1 to establish electrical continuity. There are also ways to do it.

However, in a structure that is mounted on a large root, it is difficult to provide physical protection, so protection is required during transportation, and if the spring is accidentally compressed with the rubber legs, it can be mechanically damaged.

This invention concerns the component structure that provides electrical continuity between the casings.
The upper and lower casings can be easily separated during transportation and maintenance, and the mechanical damage to the contact parts is prevented.The metal parts rub against each other during contact, which removes oxide films and maintains good electrical characteristics at all times. It has the advantage of being sustainable.

According to the present invention, in a case grounding structure that provides electrical continuity between two cases installed one above the other, a rubber leg provided on one case and covered with metal on the outer periphery, and a rubber leg on the outer periphery of the other case. A casing grounding structure is obtained, which is provided in the casing and has a spring contact in contact with the metal part and a spring-loaded holder made of a semi-cylindrical guide that protects the rubber leg part.

Next, an embodiment of the present invention will be described with reference to the drawings.

Figures 4a and 4l) show an embodiment of the present invention.

In FIG. 4, of the two upper and lower housings, the upper housing has a cylindrical rubber part 8 covered with a metal part 7, and a rubber leg that is attached to the metal plated part of the housing by screws 9. As shown in FIG. 4a, there is a spring-loaded holder on the lower casing, which consists of a cylindrical guide 10 that guides the rubber leg and a contact 6 that contacts the metal part 7 of the rubber leg. It is attached to the metal plated part of the body with screws 9'.

In this structure, as shown in FIG. 4, by placing the upper housing on the lower housing, the contacts 6 of the lower housing come into contact with the metal parts 7 of the upper housing due to the action of the spring.
Electrical continuity is obtained between the lower housing and the upper housing.

Note that FIG. 5 shows a state in which the upper housing 1 is protected from mechanical damage even if it is placed on the lower housing 2 by mistake.

By adopting the above-described structure, the present invention prevents mechanical damage during transportation and installation of the upper case, and also allows the contact 6 to exert a constant pressure on the metal part around the rubber leg of the upper case. Since they are in contact, it is possible to easily separate the upper and lower casings during transportation and maintenance, and there are advantages in that good electrical characteristics can always be maintained by removing the oxide film that occurs when they come into contact.

As explained above, the present invention has a simple and compact housing grounding structure that enables easy connection and separation of contact parts for establishing electrical continuity between the upper and lower housings, and that is mechanically protected. can be realized.

[Brief explanation of the drawing]

FIG. 1a assumes the application of the present invention. The external view of two stacked electronic devices, FIG.
Diagrams showing the case grounding connection method using electric wires, Figures 3a and b
4 is a diagram showing a conventional FG connection method using a leaf spring, FIG. This is one of the benefits of invention. FIG. 7 is a diagram illustrating a state in which the connection portion is mechanically protected even if the upper case is placed by mistake. 1... Upper housing, 2... Lower housing, 3... Rubber legs, 6... Spring,
7... Metal part of the leg, 8... Rubber part of the leg, 9.9'... Screw, 10... Circumferential metal part.

Claims (1)

[Scope of utility model registration request] In a case grounding structure that provides electrical continuity between two cases installed one above the other, a rubber leg provided on one case and covered with metal on the outer periphery and a rubber foot provided on the other case. A casing grounding structure comprising: a spring contact that contacts the metal part; and a spring-loaded holder made of a semi-cylindrical guide that protects the rubber leg.