JPH0638336Y2 - Push button mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a structure for mounting push buttons such as a preset button in a tuner of a radio receiver mounted on a vehicle.

[Summary of the Invention] In this invention, in a push button mounting structure, a panel having an opening for mounting a push button, and a button body attached to the panel so as to cover the opening are formed of resin, respectively. At the position of the opening facing the one end side of the button body, a recess having elastic legs for urging the button body in the opening direction is formed, and the other end of the button body of the opening is formed. An engaging portion is formed at a position facing the side, and an elastic insertion portion having a circular cross-section is formed at one end of the button main body, the distal end portion of which has a notched taper surface and is inserted into the recess. And at the other end of the button body, a locking portion that prevents the engagement portion from coming off is formed, and at the position facing the tapered surface of the elastic leg portion of the recess, the button body is provided. By forming a protruding part that prevents the elastic insertion part of
The backlash of the push button is absorbed without using a separate member such as a spring or a cushioning material, so that the operation feeling during the pressing operation can be improved.

[Prior Art] For example, a tuner of a radio receiver with a CD player installed in a vehicle is provided with a well-known preset button. Many of these preset buttons are attached to the panel of the radio receiver via another elastic member such as a leaf spring and a cushion material in order to improve the feeling of operation when pressing and to absorb backlash. .

[Problems to be Solved by the Invention] However, the push button such as the preset button is provided with another elastic member such as a leaf spring and a cushion material between the panel and the button body as described above. However, the number of parts and the number of mounting steps were large, and the cost was high.

Also, when arranging a light emitting diode (LED) on the operation surface of the button body for illuminating characters, marks, etc. on the back side of the button body, the separate location such as the leaf spring and the location of the light emitting diode are limited. It has been pointed out that the degree of freedom in designing a push button or the like, which is required to be further reduced in size and weight, is remarkably limited in consideration of the recent reduction in size and weight.

Therefore, the present invention provides a push button mounting structure which has a simple structure and can absorb backlash without using a separate member such as a spring or can secure a sufficient space for illumination.

[Means for Solving the Problems] In the push button mounting structure of the present invention, a panel having an opening and a button body mounted on the panel so as to cover the opening are made of resin, and the opening is formed. At a position facing one end side of the button body, a recess having elastic leg portions for urging the button body in the opening direction of the button body is provided at a position facing the other end side of the button body. The button body has an elastic insertion portion with a circular cross section that is inserted into the recessed portion at one end of the button body and has a notched taper surface at one end, and the other end has the engagement portion. Retaining portions are formed to prevent disengagement at the joints, and projecting portions are formed at positions of the elastic legs of the recesses facing the tapered surface so as to prevent the elastic insertion portions of the button body from slipping off and urging the elastic insertion portions. I am doing it.

[Operation] The elastic insertion portion of the button body is inserted into the concave portion formed in the opening portion of the panel and rotated by the elastic leg portion of the concave portion while the button body is biased in the opening direction of the opening portion. The locking portion of the main body is locked to the engaging portion formed in the opening so as not to come off. As a result, the button body can be attached to the panel without rattling so as to cover the opening without using a separate member such as a spring as in the conventional case.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 6, reference numeral 1 is a radio receiver with a CD player mounted on a car. A tuner portion 3 is provided on the front surface of a box-shaped panel 2 that constitutes the front portion of the radio receiver 1, and a plurality of preset buttons (push buttons) 10 are attached to the lower front portion of the panel 2. . The panel 2 and the preset button 10 are resin-molded with acrylic resin, ABS or the like.

As shown in FIGS. 3 and 6, a plurality of rectangles for exposing a tact switch 20 and a light emitting diode 21 for illumination, which will be described later, are arranged in a row along the lower edge of the panel 2 on the lower front surface of the panel 2. The openings 4 are formed integrally with the panel 2. The openings 4 are covered with the button bodies 11 of the preset buttons 10. More specifically, at a position facing the upper end side (one end side) of the button body 11 of the preset button 10 of the opening 4 in the drawing, a thin plate spring-like member for urging the button body 11 in the opening direction of the opening 4 is formed. Elastic legs 5
In addition to forming a concave portion 6 having a button, a button-shaped engaging portion 7 is formed at a position of the opening portion 4 facing the lower end side (the other end side) in the figure of the button body 11.

As shown in FIG. 3, the concave portion 6 has an upper edge surface of the opening 4.
4a and the elastic leg 5 formed parallel to the upper edge surface 4a.
Etc. are formed in an elongated rectangular shape, and each has a hollow portion 6a penetrating in the center thereof and a pair of bearing portions 6b, 6b closed on both sides. At the center of the elastic leg portion 5, there is formed a protruding portion 8 for preventing an elastic insertion portion 12 of a button body 11 described later from coming off and for urging the upper portion in the drawing to rotate. A projecting portion 9 for preventing the elastic insertion portion 12 of the button body 11 from coming off is also formed in the center of the upper edge portion 4a of the opening 4 facing the projecting portion 8. Further, inside the pair of bearings 6b, 6b, a pair of arcuate surfaces that are diagonally opposed to each other are formed, and serve as bearings for the tip 12a of the elastic insertion portion 12 described later.
2a is rotatably supported.

As shown in FIGS. 1 and 2, the preset button 10 is formed in a substantially U-shaped cross section, and the front surface 11a of the button body 11 is a pressing operation surface. At the upper end (one end) of the button body 11 in the figure, a distal end portion 12a is formed with an elastic insertion portion 12 having a circular cross section and having a predetermined elastic force. The width of the elastic insertion portion 12 is slightly smaller than the width of the concave portion 6, and cutout portions 12b, 12b are formed on both sides thereof. The tip portion 12a of this elastic insertion portion 12 is
It is formed so as to project upward by a semi-circular shape in cross section from the body of the, and the taper surface 12 that is inclined obliquely upward is formed in the center of the lower part.
have c. The dimension of the maximum diameter from the tapered surface 12c to the outer peripheral surface of the tip portion 12a is made slightly smaller than the dimension between the protruding portion 8 of the elastic leg portion 5 and the protruding portion 9 of the upper edge surface 4a of the opening portion 4. There is. Further, at the lower end (the other end) of the button body 11 in the drawing, a locking portion 13 that is prevented from coming off from the engaging portion 7 is formed. Tapered surfaces 13a and 7a are formed at the opposite positions of the locking portion 13 and the engaging portion 7, respectively.

Further, a semitransparent character (numeral) 11b is provided on the left side of the button body 11 in FIG. 6, and a tact switch 20 is provided on the rear surface of the button body 11 on the opposite side of the semitransparent portion 11b. Operation part
14 is formed so as to project in parallel with the elastic insertion portion 12. The semi-transparent portion 11b is illuminated by a light emitting diode (LED) 21. Reference numeral 22 is a CD insertion slot.

According to the push button mounting structure of the above embodiment, when the preset button 10 is mounted on the panel 2, the taper surface 12c of the elastic insertion portion 12 of the button body 11 becomes horizontal as shown by the chain double-dashed line in FIG. The button body 11 is tilted so that it is inserted into the recess 6 of the opening 4 of the panel 2. And the elastic insertion part
When the lower end of the button body 11 is pressed after the tip portions 12a of the 12 are held by the bearing portions 6b, 6b on both sides of the recess 6, the locking portion 13 of the button body 11 becomes the engaging portion of the opening 4. The preset button 10 can be easily attached to the panel 2 by being engaged with 7 via the respective tapered surfaces 13a and 7a.

The button body 11 of the preset button 10 attached to the panel 2 as described above has the recess 6 as shown in FIGS.
The elastic force of the elastic leg portion 5 of the elastic insert portion 12 of the button body 11
Since it is always biased upward in the figure, the locking part of the button body 11
13 is engaged with the engaging portion 7 of the opening 4, that is, the fourth,
5 In the state shown by the alternate long and short dash line in the figure, there is no rattling as it floats upward. When the front surface 11a of the button body 11 is pressed from this state, the elastic insertion portion 12 of the button body 11 is pressed.
Rotates smoothly downward with the pair of bearings 6b, 6b of the recess 6 as fulcrums, and the tact switch 20 is operated by the operating portion 14 thereof.
Turn on and off. At this time, since the elastic insertion portion 12 of the button body 11 and the elastic leg portion 5 of the recess 6 elastically deform each other, there is no rattling, and the operation feeling when pressing the button body 11 is very good. When the pressing operation is released, the elastic leg 5
Also, due to the elastic force of the elastic insertion portion 12, the original state is restored smoothly without rattling.

In this way, the elastic insertion portion 12 of the button body 11 and the elastic leg portion 5 of the recess 6 are provided with elastic force (spring function) respectively, so that the structure is simple and a spring or the like is not required. The button body 11 can be attached to the panel 2 without using any member, and after the attachment, the elastic force of the elastic insertion portion 12 of the button body 11 and the elastic leg portion 5 of the recess 6 absorbs the rattling. be able to.

Further, since the opening 4 of the panel 2 is not obstructed by another member such as a conventional absorbing spring with play, it is possible to secure a sufficient installation space for the tact switch 20 and the light emitting diode 21 for illumination. In addition, the button body 11 can be made smaller and lighter.

The elastic leg portion 5 of the recess 6 and the elastic insertion portion of the button body 11
It is needless to say that the operation feeling (feeling) at the time of pressing the button body 11 can be changed by changing the numerical values and shapes of the plate thickness, width and length of 12. Further, the target of the push button is not limited to the preset button in the tuner of the radio receiver mounted on the vehicle.

[Effect of the Invention] As described above, according to the present invention, the elastic insertion portion of the button body and the elastic leg portion itself of the recess formed in the opening of the panel are respectively provided with elastic force so that the elastic insertion of the button body is performed. The button body is inserted into the concave portion by the elastic legs of the concave portion while being biased in the opening direction of the button body and rotated, and the locking portion of the button body is formed in the opening portion. By preventing the engagement part from coming off, the button body can be attached with a simple structure and without using a separate member such as a spring without rattling the panel. Rattling can be absorbed by the elastic insertion portion and the elastic legs of the concave portion of the panel.

Moreover, since the opening of the panel is not obstructed by another member such as a conventional spring with play due to backlash, it is possible to secure a sufficient space for lighting, etc., and further reduce the size and weight of the button body. can do.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a sectional view taken along line II in FIG. 6, FIG. 2 is a perspective view of a push button, and FIG. 3 is a panel view. 4 is a sectional view taken along line IV-IV in FIG. 3, FIG. 5 is a sectional view taken along line VV in FIG. 3, and FIG. 6 is an overall perspective view. 2 ... Panel, 4 ... Opening, 5 ... Elastic leg, 6 ...
Recessed part, 7 ... Engaging part, 8 ... Projection part, 10 ... Preset button (push button), 11 ... Button body, 12 ... Elastic insertion part, 12
a: Tip part, 12c: Tapered surface, 13: Locking part.

Claims (1)

[Scope of utility model registration request] 1. A panel having an opening and a button body attached to the panel so as to cover the opening are made of resin, and the opening is located at a position facing one end of the button body. A concave portion having elastic leg portions for urging the button body in the opening direction is formed, and an engaging portion is formed at a position facing the other end side of the button body, and a tip is provided at one end of the button body. The part has an elastic insertion part having a circular cross-section that is inserted into the recessed part and has a notched tapered surface, and the other end is formed with a locking part that is retained by the engaging part.
The push button mounting structure is characterized in that a protruding portion for preventing the elastic insertion portion of the button main body from coming off and urging is formed at a position of the elastic leg portion of the recess facing the tapered surface.