JPS5927082Y2 - electrical equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electrical device such as a tape recorder in which a metal plate such as aluminum is used for the exterior, and the metal plate is easily grounded.

Generally, in a tape recorder or the like in which a metal plate such as aluminum is used for the exterior, the metal plate is connected to the ground potential of the electrical circuit of the tape recorder in order to prevent induced noise.

Conventionally, this grounding is electrically connected by connecting a lead wire between the metal plate and the grounding foil of the printed circuit board, but this requires soldering the lead wire each time the tape recorder is assembled. It was difficult to work with and was expensive.

The present invention eliminates these conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

1 is a tape recorder whose exterior is covered with an aluminum plate 2, and the aluminum plate 2 is attached by adhesive or the like to the outer surface of a spanning board 3 made of synthetic resin or the like, as shown in FIG.

Reference numeral 4 denotes a support made of a metal body whose one end is fixed to a recess 5 formed in the spanning board 3 with a screw 6, and the other end of the support 4 has a printed circuit board 7 and a bottom case 8 made of an aluminum plate. is fixed at 1 with screw 9.

When installing the printed circuit board 7, a grounding foil is placed on the portion of the printed circuit board 7 to which the support column 4 is sometimes pressed, so that the support support 4 is grounded at the same time as the printed circuit board 7 is installed. .

10 is an elastic conductor such as conductive rubber inserted into the fourth part 5 after the support 4 is attached with the screw 6;
The conductor 10 is compressed when the aluminum plate 2 is attached to the housing 3 and electrically connects the aluminum plate 2 and the head of the screw 6, thereby connecting the aluminum plate 2 to the grounding foil of the printed circuit board 7. It is connected via the pillar 4.

In the above embodiments, a tape recorder was used as an example, but the same applies to other electric devices, and the same applies to other metal plates as well.

As described above, the present invention interposes an elastic conductor such as conductive rubber between the metal plate attached to the gangplank and the metal supports fixed to the spanboard for attaching printed circuit boards, etc. By doing this, the metal plate is grounded through this conductor and the support, and with this, there is no need to ground the lead wires as in the conventional method, making it easier to assemble tape recorders, etc. It is simple and extremely inexpensive, and the elasticity of the conductor also prevents chattering noise caused by vibrations of parts generated by speakers, etc., making it highly practical. be.

[Brief explanation of the drawing]

FIG. 1 is a top view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the main part thereof. 2...Aluminum plate, 3...Gan board,
4... Support column, 7... Printed circuit board, 1
0... Conductor.

Claims (1)

[Scope of utility model registration request] An elastic conductor such as conductive rubber is interposed between the exterior metal plate attached to the spanning board and a metal support fixed to the spanning board for attaching a printed circuit board, etc., and the metal plate An electrical device configured to be grounded via the conductor and the pillar.