JPS5849536Y2 - push button device - Google Patents

Description

[Detailed description of the invention] The present invention is most suitable for application to, for example, push button devices for channel selection of television receivers and various push button devices of other types of electronic equipment. A push button is slidably held on the front side, a cover is inserted through an insertion hole into the front end of the push button and fixed to the front of the case, and a cover attached to a printed circuit board fixed to the back of the case is attached to the rear of the push button. The present invention relates to a push button device, which is composed of a bush switch arranged in a push button, and is forced to press the bush switch by a push button.

Conventionally, this type of push button device was configured so that the push button was brought into elastic contact with the cover by the return force of the pusher of the bushing switch, but due to molding errors or assembly errors, the push button and bushing could There were variations in the distance between the push button and the switch, and the structure was such that the push button was easily shaken.

However, if the push button is loose, vibrations of the case or the like will cause the push button to wobble, which is a real inconvenience in audio equipment.

The present invention has been devised to correct the above-mentioned defects, and is intended to provide a device that can reliably prevent the occurrence of flickering at the push button portion.

An embodiment in which the present invention is applied to a channel selection display device for a television receiver will be described below with reference to the drawings.

First, 1 is a case molded from synthetic resin, 2 is a push button molded from synthetic resin, 3 is a cover molded from synthetic resin, 4 is a printed circuit board, and 5 is a button soldered to the printed circuit board 4. The push switch 6 is a push button regulating member made of, for example, soft synthetic resin.

Incidentally, the case 1 is provided with a push button storage recess 8 on its front side 1a, and a switch storage recess 9 is provided on its back side 1b opposite to the recess 8.

Incidentally, the case 1 is provided with a through hole 10 for storing a lamp at a position lateral to these recesses 8 and 9.

Further, the push button 2 has a finger pressing projection 12, a flange 13,
The switch suppressing pin 14 and a pair of positioning pins 15 arranged on both sides of the pin 14 are integrally molded with each other.

In addition, the cover 3 has an insertion hole 1 for the finger pressing projection 12 of the push button 2.
7 is provided.

Note that this cover 3 is made of a transparent plate.

Further, an illumination lamp 19 is soldered to the printed circuit board 4 next to the bushing switch 5.

Further, a pair of elastic pieces 21 having a zigzag shape are integrally molded on the push button regulating member 6, and each elastic piece 21 is provided with an elongated pin insertion hole 22.

Further, a pair of pins 23 are integrally molded at both ends of each elastic piece 21.

By the way, this channel selection display device is configured to be able to select and display, for example, 12 channels.

For this reason, although not shown in the diagram, case 1 has 12 push buttons 2,
The bushing switch 5 and the lamp 19 are arranged, for example, in a matrix.

Twelve push button regulating members 6 are integrally molded, and the cover 3 is provided with twelve insertion holes 17.

Next, the procedure for assembling this channel selection display device will be explained.

First, the printed circuit board 4 is fixed to the back side 1b of the case 1 with screws 25, and the bushing switch 5 and lamp 19 are attached.
are inserted and housed in the recess 9 and through hole 10, respectively.

Next, insert the push button regulating member 6 into the recess 8 of the front surface 1a of the case 1.
mate.

Note that this fitting is performed against the elasticity of the push button regulating member 6, and in this fitted state, the push button regulating member 6 is stable within the recess 8, and no looseness occurs.

Next, the push button 2 is housed in the recess 8.

At this time, the switch pressing pin 14 of the push button 2 is inserted into the pin insertion hole 27 provided in the partition wall 26 between both the recesses 8 and 9 of the case 1, and the push button 2 is inserted into the case 1 vertically as shown in FIG. Hold it so that it can slide freely in the direction.

At this time, the pair of positioning pins 15 of the push button 2 are inserted into the pin insertion holes 22 of the pair of elastic pieces 21 of the push button regulating member 6.

At this time, as shown in FIG. 2, the tips 21a of both elastic pieces 21 enter inside both pins 15 and
5, the push button 2 is stopped from rotating about the pin 14, and is accurately positioned at the center of the pin insertion hole 27 shown in FIGS. 1 to 3.

Next, insert the cover 3 into the protrusion 1 of the push button 2 through its insertion hole 17.
2, fit into the positioning recess 28 provided on the front surface 1a of the case 1, and fix with adhesive, screws, etc.

At this time, the cover 3 will be inserted through the 12 push buttons 2 at the same time, but since each push button 2 is accurately positioned at the center position as described above, the cover 3 can be attached extremely easily. .

Also, by attaching this cover 3, the pins 23 of the push button regulating member 6 come into contact with the back surface 3a of the cover 3, and the cover 3 is supported from the back side by these pins 23, and the push button regulating member 6 is pushed into the recess 8. It can be firmly pushed into the specified position.

The assembly is completed by the above steps, but the front 1a of case 1
When the cover 3 is attached to the push button 2, the push button regulating member 6
It is pushed down slightly in FIG. 2 against the pair of elastic pieces 21.

Therefore, in this assembled state, the push button 2 is elastically pressed against the back surface 3a of the cover 3 by the flange 13 due to the elastic repulsive force of both elastic pieces 21.

Further, upon completion of the above assembly, the tip of the switch pressing pin 14 of the push button 2 is opposed to the tip of the pusher 5a of the bush switch 5, as shown in FIG.

The above assembly is then fixed to a television receiver cabinet (not shown) by a case 1.

The opening/closing door 30 of the control panel portion attached to the cabinet is arranged in front of the case 1 as shown in FIG.

At this time, the push button 2 is inserted through the insertion hole 31 provided in the opening/closing door 30 by its protrusion 12, and is projected to the front of the opening/closing door 30.

Further, a channel display window 32 provided on the opening/closing door 30 at a position lateral to the insertion hole 31 is arranged in front of the through hole 10 of the case 1.

Note that a channel display board 33 is attached to the back side of the channel display window 32 so as to be replaceable.

According to the channel selection display device configured as described above, when the protrusion 12 of the push button 2 is pressed with a finger, the pusher 5a of the button switch 5 is suppressed by the pin 14 against the built-in spring, and the channel is selected. The channel is selected.

Then, the lamp 19 is turned on, and the channel display board 33
is illuminated from the back, and the selected channel number is displayed on the channel display window 32.

At this time, as the push button 2 is pressed, the push button regulating member 6
Both elastic pieces 21 bend downward in FIG. 2 against their elasticity.

When you release your finger from the push button 2, the push button 2 is moved upward in FIG. The flange 13 is again elastically pressed against the back surface 3a of the cover 3.

- By the way, since the push button 2 is configured so as to be always elastically pressed against the back surface 3a of the cover 3 by the pair of elastic pieces 21 forming a zigzag shape, the push button 2 does not shake inside the case 1. To surely prevent the occurrence of trembling in two parts of a push button due to vibrations of a cabinet or the like.

In addition, due to the positioning effect of the push button 2 by both elastic pieces 21 and the pair of pins 15, the push button 2 can always be accurately positioned at the center position of the pin insertion hole 27. Always do it accurately, press button 2
There is no inconvenience at all in which the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement of the reciprocating movement is obstructed is completely eliminated.

Although the embodiments of the present invention have been described above, the present invention is not limited to channel selection display devices, but can be applied to various other push button devices.

As described above, the present invention is configured so that the push button is brought into elastic contact with the cover by a pair of elastic pieces forming a shivering shape. Therefore, due to molding errors or assembly errors, the push button may This has a great advantage in that it can reliably prevent the push button part from wobbling due to vibrations of the case, etc.

[Brief explanation of the drawing]

The drawing shows an embodiment in which the present invention is applied to a channel selection display device for a television receiver.
The figure is a plan view of the main part, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a sectional view taken along the line ■-■ in Figure 1, and Figure 4 is a partial perspective view of the push button regulating member. . Also, in the symbols used in the drawings, 1...Case, 2...Push button, 3...Cover 4
...Printed circuit board, 5...Button switch, 6...Push button regulation member, 17...
...Insertion hole, 21...Elastic piece.

Claims (1)

[Scope of utility model registration request] A case, a push button slidably held on the front side of the case, a cover inserted through an insertion hole in the front end of the push button and fixed to the front of the case, and a printed circuit board fixed on the back of the case. In a push-button device where the push button is forced to suppress the push button, a member having a pair of elastic pieces in the shape of a square is used. The push button is fitted into a recess provided on the front side of the case, and the pair of elastic pieces are elastically pressed against the back surface of the push button, so that the push button is brought into elastic contact with the cover. Push button device.