JPH0333090Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to the case of electronic equipment, and in particular, the invention relates to a case of an electronic device, and in particular, a metal plate is arranged on the surface of a panel base made of synthetic resin. This invention relates to a structure for grounding a plate in a device having an operation panel consisting of

(Prior Art) Recently, in consumer electronic devices such as audio and video devices, synthetic resin is used for the operation panel of the housing, because it is advantageous in terms of ease of design creation and productivity such as processing and assembly. There is a tendency to use molded products frequently.

In this case, since appearance as well as functionality is an important element in audio/video equipment, the texture of metal is maintained by using metal on the surface of the operation panel instead of using synthetic resin for the entire operation panel. Specifically, an operation panel is formed by disposing a metal plate such as aluminum on part or all of the surface of a panel base molded from synthetic resin.

However, as mentioned above, in the case of an operation panel that has a metal plate on the surface of a synthetic resin panel base, the synthetic resin panel base is fixed to the chassis, so if it is left as it is, the metal plate part If grounding is not possible, the plate portion may become charged due to residual static electricity generated when operating parts such as knobs, or due to operations by a charged user. Occasionally, a problem occurred in the operation of the

Conventionally, therefore, a structure was adopted in which a ground terminal was provided protruding from the metal chassis itself, this ground terminal was fixed to the plate of the operation panel with screws, and the plate of the operation panel was grounded to the chassis.

(Problems to be solved by the invention) However, when adopting a structure in which the ground terminal is protruded from the chassis as described above, the chassis is not cut out properly, which causes an increase in cost, and the protruding part of the ground terminal , there is a high risk of deformation during processes such as pressing, degreasing, and plating, or during transportation. Furthermore, screwing the plate of the operation panel tends to spoil the appearance, and it has to be screwed at the bottom of the chassis, but in this case there are problems such as assembly work becomes difficult.

The present invention was devised in view of these points, and is an inexpensive operation panel in which a metal plate is arranged on the surface of a synthetic resin panel base, in which the plate portion can be easily grounded to the chassis. An object of the present invention is to provide a housing for an electronic device with good appearance.

[Structure of the idea]

(Means for Solving the Problems) The present invention comprises a metal plate 6 disposed on the surface of a synthetic resin panel base 5 provided with a fixing part 7 that is fixed to a metal chassis 8. This relates to a housing 1 of an electronic device having an operation panel 2, and is provided with a grounding terminal 10 that connects the plate 6 and the chassis 8, and this grounding terminal 10 has a conductive portion 12 having sharp teeth 14 at its tip. The ground terminal 10 is clamped between the panel base fixing part 7 of the operation panel 2 and the chassis 8, and the ground terminal 10 is tightened and fixed with the screw 9.
The sharp teeth 14 formed in the cylindrical shape are connected to the current-carrying part 18 by pressure contact.

(Function) The electronic device casing 1 of the present invention has a grounding terminal 10 between the panel base fixing part 7 of the operation panel 2 and the chassis 8, which forms a conductive part 12 having sharp teeth 14 at the tip. The ground terminal 10 is fixed in a state where the operation panel 2 and the chassis 8 are clamped and fixed with the screws 9, and the conductive portion 1 of the ground terminal 10 is fixed.
The plate 6 of the operation panel 2 is grounded to the chassis 8 by press-connecting the sharp teeth 14 formed on the operation panel 2 to the current-carrying part 18.

(Example) An embodiment of the present invention will be described with reference to the drawings.

FIG. 3 shows an electronic device such as an audio/video device, and numeral 1 is a housing thereof. It is formed into a rectangular box shape by combining the bottom plate and the like.

As shown in FIGS. 1 and 2, the front panel 2 of the housing 1 is made of an aluminum plate formed into a predetermined shape on the surface of a panel base 5 made of synthetic resin and molded into a predetermined shape. By fixing the fixing pieces 7 as a plurality of fixing parts integrally molded on the panel base 5 to the inner metal chassis 8 with screws 9,
It is provided in parallel at the front part of the chassis 8.

Although not shown, the chassis 8 is equipped with a printed wiring board on which electrical and electronic parts such as a switch, a volume, and a display element are mounted. Operating parts such as the above are arranged on the surface of the front panel 2, and some of the operating parts such as push buttons are integrally molded as part of the synthetic resin panel base 5 via thin-walled hinges and the like. ing.

Then, a metal ground terminal 10 is attached to one of the plurality of fixing pieces 7 of the panel base 5 fixed to the chassis 8 before it is fixed to the chassis 8, and this ground terminal 10 allows the above-mentioned A plate 6 is grounded to a chassis 8.

That is, the grounding terminal 10 is connected to the corresponding fixing piece 7.
The lower piece of the mounting part 11, which has a U-shape in side view, is extended forward, and its tip is bent upward to form the conductive part 1.
2, and a through hole 1 for the screw 9 is formed in the mounting part 11.
3, and a plurality of sharp teeth 14 are formed in a sawtooth shape at the tip of the conductive part 12. By holding the fixing piece 7 between the U-shaped mounting part 11, the fixing piece 7
In this state, the teeth 14 of the conductive part 12
is in pressure contact with the conductive part 18 on the inner surface of the plate 6, which has been cut by approximately 0.5 mm and the alumite coating has been removed, through the through hole 15 formed in the panel base 5, and the conductive part 12 is electrically connected to the plate 6. As described above, when the fixing piece 7 is fixed to the chassis 8 with the screw 9, the attachment part 1
1 is ensured to be electrically connected to the chassis 8, whereby the plate 6 is grounded to the chassis 8 via the ground terminal 10.

In this embodiment, a locking hole 16 is formed in the mounting portion 11 of the grounding terminal 10, and a locking protrusion 17 is formed in the fixing piece 7 in correspondence with the locking hole 16. When installing the terminal 10, the grounding terminal 10 is positioned by fitting the locking hole 16 and the locking protrusion 17, and the locking protrusion 17
The ground terminal 10 is fixed to the fixing piece 7 by hot-staking the tip of the terminal to the edge of the locking hole 16.

[Effect of idea]

As described above, according to the present invention, in an operation panel comprising a metal plate disposed on the surface of an insulating synthetic resin panel base, a grounding terminal is attached to the fixed part of the panel base relative to the chassis. There is no need to protrude a grounding terminal on the chassis for grounding the plate, so it is inexpensive, there is no risk of deformation of the protruding part during the work process, and there is a screw hole on the plate for grounding. There is no need to form a panel, and grounding can be done by simply removing a part of the coating on the inside of the plate, giving it a good appearance.After that, just fix the fixed part of the panel base to the chassis and attach the operation panel as usual. By attaching the plate to the chassis, the plate can be grounded to the chassis without deteriorating assembly workability.

[Brief explanation of drawings]

The figures show one embodiment of the electronic device casing of the present invention, in which Fig. 1 is a vertical sectional view of the main part, Fig. 2 is a perspective view of the main part, and Fig. 3 is a perspective view of the whole. . DESCRIPTION OF SYMBOLS 1...Housing, 2...Front panel as an operation panel, 5...Panel base, 6...Plate, 7
... Fixed piece as a fixed part, 8 ... Chassis, 9
... Screw, 10 ... Ground terminal, 12 ... Continuity part,
18...Electricity section.

Claims (1)

[Scope of Claim for Utility Model Registration] In the case of an electronic device having an operation panel formed by disposing a metal plate on the surface of a panel base made of synthetic resin and having a fixing part fixed to a metal chassis. , a grounding terminal is provided for connecting the plate of the operation panel and the chassis, the grounding terminal has a conductive portion having sharp teeth at its tip, and the inner surface of the plate of the operation panel has a ground terminal connected to the panel base. forming a current-carrying part by removing the coating of the part exposed by the formed through hole, clamping the ground terminal between the panel base fixing part of the operation panel and the chassis and tightening and fixing it with a screw; A casing of an electronic device characterized in that a sharp tooth formed in a conductive part of the ground terminal is press-connected to a current-carrying part.