JP2007066646A - Push button device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a push button device capable of saving space inside a push button mounting counterpart member and realizing downsizing of an apparatus and ensuring good operation feeling of a push button.
A push button leg portion 1b projecting from the back surface of a head 1a of a push button is slid onto a push button guide portion 2a formed on a push button attachment counterpart member 2 and having a base end opened on an inner surface of the push button attachment counterpart member 2. The urging force is applied to the push button 1 from the inside, and the push button leg portion 1b is formed in such a length that does not protrude to the inside of the push button mounting counterpart member 2 at the push button return position by the urging force. In the pushbutton device, at the edge portion of at least one of the leading edge portion of the pushbutton leg portion 1b and the proximal opening edge portion of the pushbutton guide portion 2a in the sliding surface portion between the pushbutton leg portion 1b and the pushbutton guide portion 2a. A chamfered portion 1d and / or 2b is provided.
[Selection] Figure 1

Description

  The present invention relates to a push button device applied as switch operating means for various devices such as in-vehicle audio devices.

  As a conventional push button device for operating a switch, a cylindrical push button leg integrally projectingly provided on the back surface of the head of the push button is integrally projected on an outer surface of a push button mounting counterpart member made of an exterior panel or a housing of various devices. And a switch mounted on a circuit board disposed inside the push button mounting mating member and slidably fitted in a cylindrical push button guide portion whose base end is open on the inner surface of the push button mounting mating member. Is already known that applies a return biasing force to the push button and pushes the push button to turn on the switch (see, for example, Patent Document 1). Further, in such a conventional push button device, in order to save the space inside the push button attachment counterpart member (inside the housing), the push button leg portion slidably fitted to the push button guide portion of the push button attachment counterpart member It is already known that the switch is formed in such a length that it does not protrude into the push button mounting counterpart member at the switch OFF position (push button return position).

Japanese Patent Laid-Open No. 10-27526 (paragraph [0026], FIG. 1)

  Since the conventional pushbutton device is configured as described above, the pushbutton leg portion does not protrude from the pushbutton guide portion of the pushbutton attachment counterpart member into the pushbutton attachment counterpart member at the return position of the pushbutton by the return biasing force of the switch. When the push button is pushed, when the push button is pushed, the push button leg rattles easily in the push button guide part, and when the tilt occurs, the tip edge part of the push button leg part and the push button guide part of the push button mounting counterpart member Rubbing with the inner surface and rubbing between the proximal end opening edge portion of the push button guide portion that opens on the inner surface of the push button mounting mating member and the outer peripheral surface of the push button leg portion are caused, and this causes sliding of the push button leg portion. As the dynamic resistance increases, the push button does not get a good operation feeling, such as being caught during the stroke operation of the push button, and a return failure occurs when the push button is released. More likely, there is a problem that interferes with the stroke operation and switch ON · OFF of the push button.

  Therefore, in order to improve the operational feeling of the push button, the tip edge portion of the push button leg portion slidably fitted in the push button guide portion of the push button attachment counterpart member always protrudes inside the push button attachment counterpart member. If the push button leg is elongated, it is possible to avoid rubbing between the tip edge portion of the push button leg and the push button guide at the time of pushing the push button, and it is possible to ensure a good operation feeling of the push button. In this case, it is necessary to secure an extra space for extending the push button leg portion inside the push button mounting counterpart member (inside the housing), and therefore, space saving inside the housing and miniaturization of the device can be achieved. There was no problem.

The present invention has been made to solve the above-described problems, and it is possible to reduce the space of the inside of the push button mounting mating member so as to reduce the size of the device and to ensure a good operation feeling of the push button. It is an object to obtain a push button device capable of

  In the push button device according to the present invention, the push button leg projecting from the back surface of the head of the push button is slid into the push button guide portion formed on the push button mounting mating member and having the base end opened on the inner surface of the push button mounting mating member. In the push button device, the urging force is applied to the push button from the inside, and the push button leg portion is formed so as not to protrude inside the push button mounting counterpart member at the push button return position by the urging force. The chamfered portion is provided on at least one edge portion of the distal end edge portion of the pushbutton leg portion and the proximal end opening edge portion of the pushbutton guide portion in the sliding surface portion of the pushbutton leg portion and the pushbutton guide portion. .

  According to this invention, the tip edge portion of the push button leg portion, which is slidably fitted to the push button guide of the push button mounting mating member and formed so as not to protrude inside the push button mounting mating member at the push button return position, Since the chamfered portion is provided on at least one edge portion of the proximal end opening end edge portion of the push button guide portion, even if the push button is inclined and pressed, the distal end edge portion of the push button leg portion and the push button The chamfered portion can prevent scratching with the guide portion and / or rubbing between the proximal end opening edge portion of the pushbutton guide portion and the pushbutton leg portion. Therefore, the sliding resistance of the pushbutton caused by the rubbing can be prevented. As a result, the push button can be smoothly stroked and a good operation feeling of the push button can be obtained, and a return failure of the push button can be suppressed. There is a cormorant effect. In addition, such an effect can be obtained without extending the push button leg portion at the push button return position to the inside of the push button mounting mating member as described above, so that the space inside the push button mounting mating member can be saved. There is an effect that can be.

Embodiment 1 FIG.
1 is a cross-sectional view showing a push button device according to Embodiment 1 of the present invention.
The push button device shown in FIG. 1 is formed by slidably attaching a push button 1 for switch operation in various devices such as an in-vehicle acoustic device to a push button attaching member 2, and details thereof will be described below.
First, the push button 1 has a configuration in which a cylindrical push button leg 1b and a central shaft-like switch pressing piece 1c are integrally projected on the back surface of the head 1a for pressing operation. 1 is formed longer than the push button leg 1b.
On the other hand, the push button mounting counterpart member 2 is composed of a housing or exterior panel of a device incorporating the circuit board 3 on which the push switch 4 is mounted. The push button mounting counterpart member 2 is based on the inner surface of the push button mounting counterpart member 2. A cylindrical push button guide portion 2a whose end is open and protrudes outward is integrally formed. The push button leg 1b is slidably fitted inside the push button guide 2a, and the tip of the switch pressing piece 1c is brought into contact with the push switch 4 in the fitted state.

  Accordingly, a return biasing force of the push switch 4 is applied to the push button 1, and at the return position of the push button 1 by the return biasing force, the push button leg portion 1 b has a distal end surface of the push button mounting counterpart member 2. It is formed in such a length that it is substantially flush with the inner surface of the push button and is held so that the tip of the push button leg portion 1 b does not protrude inside the push button mounting counterpart member 2.

  A chamfered portion 2b is provided at a base end opening edge portion of the push button guide portion 2a, and the chamfered portion 2b is formed of a tapered surface in a direction in which the base end opening diameter of the push button guide portion 2a is increased. Thus, when the push button 1 is pushed, the leading edge portion of the push button leg 1b is prevented from interfering.

  In addition, a cylindrical light guide portion 5a that allows the stroke operation of the push button 1 by intervening between the push button leg portion 1b of the push button 1 and the switch pressing piece portion 1c is formed inside the push button attaching counterpart member 2. The light guide member 5 is disposed. On the other hand, a lamp 6 for optically displaying the push button 1 via the light guide member 5 is mounted on the circuit board 3.

Next, the operation will be described.
When the push button 1 is pushed, the push switch 4 on the circuit board 3 is turned ON by the switch pressing piece 1c of the push button 1. At this time, the push button leg portion 1b slides in the push button guide portion 2a of the push button attachment counterpart member 2, and the tip portion of the push button leg portion 1b protrudes to the inside of the push button attachment counterpart member 2. Since the chamfered portion 2b is provided at the base end opening edge portion of 2a, it is possible to avoid rubbing between the base end opening edge portion of the push button guide portion 2a and the push button leg portion 1b. For this reason, compared with the case where the chamfered portion 2b is not provided at the base end opening portion of the push button guide portion 2a, the sliding resistance of the push button leg portion 1b when the push button 1 is pushed is greatly reduced. Good operation feeling can be secured. Further, the push button 1 is restored by the return biasing force of the push switch 4 when the push is released, but when the chamfered portion 2b is not provided at the base opening edge of the push button guide portion 2a during the return operation, The push button leg portion 1b is easily caught on the end opening edge portion, and the return failure of the push button 1 may occur due to the catch, but the return failure can be avoided by the chamfered portion 2b.

  According to the first embodiment described above, the chamfered portion 2b is formed at the proximal end opening edge portion of the pushbutton guide portion 2a that is formed so as to protrude from the outer surface of the pushbutton mounting counterpart member 2 and the pushbutton leg portion 1b is slidably fitted thereto. Since the chamfered portion 2b is not provided at the base end opening edge portion of the pushbutton guide portion 2a, the pushbutton leg portion 1b is moved to the base of the pushbutton guide portion 2a. The chamfered portion 2b can avoid rubbing on the edge portion of the opening opening. Therefore, it is possible to ensure a good operation feeling of the push button 1 and to suppress a return failure of the push button 1. There is. Further, the push button leg portion 1b is formed in such a length that it does not protrude from the inside of the push button guide mating member 2 to the inner side of the push button mounting mating member 2 from the inside of the push button guide mating member 2a that is projected on the outer surface of the push button mounting mating member 2 at the return position of the push button 1. Therefore, there is an effect that space saving in the push button mounting mating member 2 can be achieved.

Embodiment 2. FIG.
2 is a cross-sectional view showing the main part of a pushbutton device according to Embodiment 2 of the present invention. The same parts as those in FIG.
In the first embodiment, the chamfered portion 2b is provided at the proximal end opening edge portion of the push button guide portion 2a of the push button mounting counterpart member 2, but in the second embodiment, the tip outer peripheral edge portion of the push button leg portion 1b is tapered. A chamfered portion 1d is provided.

  According to the second embodiment having such a configuration, when the chamfered portion 1d is not provided at the distal outer peripheral edge portion of the push button leg portion 1b, the distal outer peripheral edge portion of the push button leg portion 1d and the base of the push button guide portion 2a are provided. It becomes possible to avoid the interference between the edge portions that are likely to occur between the end opening edge portions, and therefore, the same effect as in the first embodiment can be expected.

Embodiment 3 FIG.
In the first embodiment, the chamfered portion 2b is provided at the proximal end opening edge portion of the push button guide portion 2a, and in the second embodiment, the chamfered portion 1d is provided at the outer peripheral edge portion of the distal end of the push button leg portion 1b. However, in the third embodiment, the chamfered portions 1d and 2b are provided at both the distal end outer peripheral edge portion of the push button leg portion 1b and the proximal opening edge portion of the push button guide portion 2a.

  According to the third embodiment having such a configuration, during the stroke operation of the push button 1, interference between the edge portions of the outer peripheral edge portion of the push button leg portion 1d and the proximal end opening edge portion of the push button guide portion 2a is avoided. In addition, the rubbing between the proximal opening edge of the push button guide 2a and the cylindrical outer peripheral surface of the push button leg 1b and the rubbing between the distal outer peripheral edge of the push button leg 1b and the cylindrical inner peripheral surface of the push button guide 2a. Can be prevented more reliably, and a better operational feeling of the push button 1 can be obtained, and the stroke operability of the push button 1 can be further improved.

Embodiment 4 FIG.
In each of the embodiments described above, the case where the chamfered portion 2b of the proximal end opening edge portion of the push button guide portion 2a and / or the chamfered portion 1d of the distal end edge portion of the push button leg portion 1b is formed in a tapered shape has been described. The chamfered portions 2b and 1d may be formed in a round shape, and in this case, the same effect can be expected.

It is sectional drawing which shows the pushbutton apparatus by Embodiment 1 of this invention. It is sectional drawing which shows the pushbutton apparatus by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Push button, 1a head, 1b Push button leg part, 1c Switch pressing piece part, 1d Chamfer part, 2 Push button guide part, 2a Push button guide part, 2b Chamfer part, 3 Circuit board, 4 Push switch, 5 Light guide member, 6 lamp.

Claims (3)

  The push button leg projectingly provided on the back surface of the head of the push button is slidably fitted to a push button guide portion formed on the push button mounting mating member and having a base end opened on the inner surface of the push button mounting mating member. In the push button device in which a biasing force is applied to the push button from the inside, and the push button leg is formed in a length that does not protrude to the inside of the push button mounting counterpart member at the push button return position by the biasing force, the push button leg and the push button guide A push button device characterized in that a chamfered portion is provided on at least one edge portion of a distal end edge portion of the push button leg portion and a proximal end opening edge portion of the push button guide portion in a sliding surface portion with the portion.   2. The push button device according to claim 1, wherein a return biasing force of a push switch disposed inside the push button mounting counterpart member is applied to the push button. The push button leg portion is formed to have such a length that a tip edge portion thereof is held at substantially the same position as a base end opening edge portion of the push button guide portion when the push button is not pressed. 3. The push button device according to 2.

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