JPH0610555Y2 - Front metal for ESD protection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a front metal forming a front panel of a VTR, and particularly to a structure suitable for preventing electrostatic breakdown.

[Conventional technology]

FIG. 6 shows a state in which the front metal 2 for an electrostatic breakdown prevention device is viewed from the back. In the conventional VTR front metal 2 for an electrostatic breakdown prevention device, the grounding connection portion is a step of adhering the adhesive sheet 10 to the back surface of the member of the front metal 2 and then withdrawing holes or the like that match the outer shape of the operation button or the like. Before and after, the above-mentioned adhesive sheet 10 is polished by a polishing machine or manually.
Was partially peeled off to form the conductive portion 11. For this reason, the work process is extremely complicated.

As shown in FIG. 6, the operation button 3, the operation button hole 13a for penetrating the operation knob 14, the operation knob hole 1
3b and 13c are opened, and an adhesive sheet 10 (hatched portion) is attached to the entire back surface of the front metal 2.

[Problems to be solved by the invention]

 For this reason, the work process is extremely complicated.

An object of the present invention is to provide a front metal for an electrostatic breakdown prevention device which eliminates the above-mentioned drawbacks and reduces the cost of parts (front metal 2) and improves the antistatic effect.

[Means for solving problems]

In order to achieve the above-mentioned purpose, with respect to the front metal 2,
An adhesive sheet 10 as an insulating material is attached in advance so as to expose the grounding conducting portion on the metal surface.

[Action]

 The exposed part forms a grounding conducting part.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

3 is an overall schematic view of the VTR, FIG. 4 is a schematic cross-sectional view of the front metal of the electrostatic breakdown prevention device, and FIG. 5 is a rear view of the configuration of FIG. 4 as seen from the inside of the set.

A metallic front metal 2 is attached to a part of the front panel 1 via an adhesive sheet 10. In contrast to the application of static electricity, in the present configuration, the electric charge flows to the chassis cover 9 via the conducting member 4 having the pressing portion 6 at the hole 5 provided in the front panel 1 and the screw 7. This makes V
Malfunctions and failures of the TR control unit are prevented. The chassis cover 9 is connected to the ground of the power source of the set body and grounded to the ground via a power cord.

However, conventionally, since the front metal 2 shown in FIG. 6 was used, a complicated work was performed to secure the conductive portion 11, and electrostatic breakdown was a problem.

FIG. 1 is a schematic view of attaching an adhesive sheet to a front metal member 2 for an electrostatic breakdown prevention device of the present invention, and FIG. 2 is a rear view of the front metal. From the front metal material 12,
When the front metal 2 is stamped out as 2a, 2b, 2c, the adhesive sheet 10 is attached so that conductive portions 11a, 11b, 11c ... Can be formed as shown in the drawing.
The back surface of the front metal 2 thus punched is shown in FIG. This is assembled as shown in FIG. As a result, the conventional extremely inefficient and complicated manufacturing process of peeling a part of the adhesive sheet 10 after the adhesive sheet 10 is attached is improved.

[Effect of device]

1. Providing a cost-effective electrostatic breakdown prevention device that avoids the inefficient complexity of peeling again after attaching the adhesive sheet to form the conductive part without the adhesive sheet on the back surface of the front metal it can.

2. In the past, when the peeling work was performed, the residue of the adhesive member was attached to the conductive part, and the conductivity was poor, so there was a case where it could not fully exhibit the performance as an electrostatic breakdown prevention device. Sex is obtained.

[Brief description of drawings]

FIG. 1 is a schematic view of attaching an adhesive sheet to a front metal material according to the present invention, FIG. 2 is a rear view of the front metal according to the present invention, FIG. 3 is a schematic perspective view of a VTR, and FIG. Front metal cross-sectional schematic view of Fig. 5, Fig. 4 is
FIG. 6 is a rear view of the configuration shown in the figure as viewed from the inside of the set, and FIG. 6 is a rear view of a front metal according to the prior art. 1 ... Front panel, 2 ... Front metal 3 ... Operation button, 4 ... Conducting member 5 ... Hole, 6 ... Pressing part 7 ... Screw, 8 ... Frame 9 ... Chassis cover, 10 ... Adhesive sheet 11 …… Part without adhesive sheet (conduction part) 12 …… Front metal material 13a …… Hole for inserting operation button 13b, 13c …… Hole for inserting operation knob 14 …… Operation knob

Claims (1)

[Scope of utility model registration request] 1. A front metal for an electrostatic breakdown prevention device, which is attached to a front panel and has a conductive portion connected to a ground, wherein an adhesive sheet is previously attached to the front metal surface so as to expose the conductive portion for ground connection. Front metal for electrostatic breakdown prevention device characterized by the attached structure.