JPS6355734B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation button mounting device that includes a large number of press switches provided on a board and operation buttons corresponding to the press switches, and particularly relates to an operation button mounting device that includes a large number of press switches provided on a board and operation buttons corresponding to the press switches. The purpose is to improve workability and serviceability by eliminating the need for wiring to be drawn out.

Recently, the operation switches provided on the front of various devices have been increasingly replaced with a group of switches called "feather touch", which are operated by lightly pressing the operation button. This is because, for example, even in tape recorders and the like, it has become easy to electrically instruct the operation of each mode using a microcomputer and drive motors, plungers, etc. by logical operations. There are many types of mounting structures for this press switch, commonly called a "feather touch" switch, and its operation button, but most of these press switches and their operation button are integrally attached to the front panel. Therefore, a large number of wires (lead wires) from the press switch are led out from the back side of the front panel.

This structure requires extremely complicated work when attaching and detaching the front panel. For example, when attaching the front panel to the main body chassis, the lead wires from the many switches on this front panel must be connected to the board on the main body chassis side. Further line processing is required. In addition, the front panel is one of the parts that is most often removed and removed during repairs and services, and each time it is removed or removed, it is necessary to disconnect the wiring, making it extremely difficult to work with.

A conventional operation button mounting device will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of a main part of a tape recorder equipped with an operation button mounting device having this "feather touch" switch, and FIG. 2 is a sectional view.

1 is a front panel, and 2 is a decorative member.
Reference numeral 3 designates each operation button, the rotation shaft portion 3a of which is held between the front surface of the front panel 1 and the rear portion of the decorative member 2. Reference numeral 4 denotes a switch, which is fixed to a wiring board 5 at a position corresponding to each operation button, and this wiring board 5 is fixed to a base member 6 provided on the back surface of the front panel 1. That is, one rear end of the operation button 3 faces the switch 4 using the through hole of the front panel 1 and the base member 6. Note 7
is a group of lead wires led out from the wiring board 5.

As is clear from FIG. 2, since the wiring board 5 to which the switch 4 is fixed is assembled integrally with the front panel 1, the lead wire group 7 is led out from the front panel 1. Therefore, since the process of connecting the lead wire group 7 and processing the wires is integrated with the front panel, the workability is poor and the serviceability is also poor.

The present invention solves the above-mentioned conventional drawbacks, and one embodiment of the present invention will be described below with reference to the drawings. Figure 3 is a front view, Figure 4 is a sectional view taken along line A-A,
FIG. 5 is an exploded perspective view of the front panel structure shown from the back, and FIG. 6 is an exploded perspective view of this embodiment.

11 is a front panel; 12 is a decorative member having a through hole for an operation button 13; The operation button 13 is the rotation shaft part 1
3a, and this rotating shaft portion 13a is rotatably supported by a bearing portion 12a integrally provided on the back surface of the decorative member 12. 14 is a fixing member having a through hole 14a through which a switch to be described later is inserted;
An elastic piece 14b that protrudes into the through hole and has a contact portion at the front and has elasticity due to its own material, and a support portion that protrudes from the front and contacts the bearing portion 12a of the decorative member 12. 14c are integrally molded. Further, on the back side of the fixing member 14, a protruding switch position regulating rib 14d is provided between which a switch can be inserted. The above are the elements of the front panel structure, and the through holes for the operation buttons are aligned and fixed with screws 15 or the like so that the decorative member 12 and the fixing member 14 sandwich the front panel. At this time, since the support portion 14c faces and contacts the bearing portion 12a on the back surface of the decorative member, the rotation shaft portion 13a of the operation button 13 is supported so as to be rotatable and not fall. Furthermore, the elastic piece 14b comes into elastic contact with the vicinity of the rotating shaft portion 13a of the operating button 13 and presses the operating button toward the front. Therefore, all the operation buttons 13 are urged forward and are uniformly aligned.

On the other hand, a large number of switches 17 are connected and fixed to the wiring board 16, and a group of lead wires 18 are led out.
This wiring board 16 is connected to the sub chassis 1 as described later.
However, with this structure, wiring of lead wires and wire processing would be required at the initial stage of attaching the sub-chassis 19 to the main chassis 20, that is, at a low-density stage where no component parts have been attached yet. is possible.

Here, the sub-chassis 19 includes a wiring board 1
An elastic piece 19a that comes into contact with 6 from the back side and elastically biases it forward is provided by integral molding. Furthermore, a fixing piece 1 for stopping and holding the wiring board 16 against the forward biasing force of the elastic piece 19a.
Several 9b are provided. Therefore, when the switch 17 is provided and the wiring board 16 from which the lead wire group 18 is led is attached to the sub-chassis 19,
As shown in FIG. 6, the elastic piece 19a and the fixed piece 19
It is held elastically by b.

Further, this sub-chassis 19 is attached to the main chassis, and various wiring boards, mechanical parts, etc. are then installed therein. Then, the front panel structure formed as shown in FIG. Positioning becomes possible. When the front panel structure is attached to the main chassis 20, the back surface of the fixing member 14 that contacts the switch resists the force of the elastic piece 19a that urges the wiring board 16 forward. , that is, the back surface of the fixing member 14 and the elastic piece 1
9a supports and holds the wiring board 16 on which the switch 17 is located. At this time, as shown in FIG. 4, the fixing piece 19b of the sub-chassis 19 no longer functions as a locking member. However, when the front panel is removed and attached during service, if the front panel structure comes off and the force exerted by the fixing member 14 is removed, the sub chassis itself (using the elastic piece 19a and the fixing piece 19b) can remove the wiring board as described above. It was possible to hold it, and the workability was greatly improved.

According to the above configuration, the lead wire group is led out from the sub-chassis side and not from the front panel structure, so wiring and wire processing are performed in the initial process before other components are mounted. This made assembly work much easier. Furthermore, the front panel structure and the main chassis are assembled by simply pressing the front panel structure, pressing a part of the switch 17 with the fixing member 14, and holding it elastically between the elastic piece 19a. , inspections during service can now be carried out much more quickly and efficiently.

As described above, according to the present invention, the switch board to which the switch is fixed is elastically pressed by the elastic member provided on the holding chassis, while the switch is pressed against the fixing member of the front panel structure. It is possible to elastically hold the switch board to which the switch board is fixed between the holding chassis and the fixing member, and because this structure does not fix the switch board integrally with the front panel structure, the group of lead wires led from the switch board can be Wiring connections and line processing can be performed independently of the front panel. Therefore, work efficiency during manufacturing is significantly improved, and work when attaching and detaching the front panel for service, repair, etc. becomes extremely easy.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a tape recorder having a conventional operation button mounting device, FIG. 2 is a sectional view thereof, FIG. 3 is a front view showing an embodiment of the present invention, and FIG.
5 is an exploded perspective view of the front panel structure, and FIG. 6 is an exploded perspective view of this embodiment. 11... Front panel, 12... Decorative member, 13
...Operation button, 13a...Rotating shaft portion, 14...Fixing member, 14b...Elastic piece, 16...Wiring board, 1
7... Switch, 18... Lead wire group, 19...
Sub chassis, 19a... elastic piece.

Claims (1)

[Claims] 1. A decorative member with an operating button window is provided on the front side of the front panel, a fixing member having an elastic piece corresponding to the operating button is provided on the back side of the front panel, and the operating button is fitted into the operating button window of the decorative member. The vicinity of the rotation axis of the operation button is elastically clamped between the decorative member and the elastic piece of the fixing member, and the switch board, on which each switch is fixed in advance at the position corresponding to each operation button, is held in place by the other switch board. An operation button mounting device characterized in that each switch is elastically pressed by an elastic member provided on a holding chassis, and each switch contacts a fixed member at a position corresponding to the operation button to elastically support the switch board. .