JPH08111137A - Push-button switch structure - Google Patents

Abstract

PURPOSE: To provide a push-button switch structure by which influence of frictional force of these is reduced even if grease is not applied and return operation of a push button is smoothed by forming a guide part-push switch contact surface as an optional inclined face. CONSTITUTION: A hinge part 1a integrally formed on one end of a bottom part of a push button 1 is supported with a front bracket 2 arranged between a PC board 4 and a front panel 5, and a guide part 1b integrally formed on the other end is placed on a push switch 3 on the PC board 4. A contact surface between the guide part 1b and the push switch 3 has an angle α to the PC board 4 direction, and becomes an inclined face running in the hinge part 1a direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch structure, more specifically, a push button supported by a support by a hinge portion, a push switch, and a push button switch mounted vertically on the push button. The present invention relates to a push button switch structure, which comprises a connecting member, and a connecting member presses a push switch by pressing a head portion of the push button to switch the switch.

[0002]

2. Description of the Related Art In a conventional push button switch structure, as shown in FIG. 3, for example, a hinge portion 6a integrally formed at one end of a bottom portion of a push button 6 made of synthetic resin is supported by a front bracket 2 and the bottom portion is also formed. The guide portion 6b having an arbitrary length integrally formed on the other end of the PC board
It is configured by being mounted on the push switch 7 above. Here, the contact surface between the guide portion 6b and the push switch 7 is
It is formed horizontally with respect to the PC board 4 direction. In the figure, 5 is the front panel of the device, from which the push button 6 head protrudes.

In such a push button switch structure,
By pressing the head portion of the push button 6, the hinge portion 6a is bent, and the guide portion 6b presses the push switch 7 to switch the switch.

[0004]

In such a conventional push button switch structure, as shown in FIG. 4, the connection between the push switch contact point and the hinge fulcrum on the guide center line, and the guide center line. When the angle is θ, after the push switch operation by pressing the push button, the push button restoring force due to the push switch restoring force Fp becomes Fpsinθ, and the resultant force Fpsinθ and the restoring force Fs of the push button itself is the pushbutton returning direction. To work. At this time, since the frictional force Ff is exerted on the contact surface between the guide portion and the push switch, the resultant force F ′ between the resultant force and the frictional force Ff becomes the force for the push button return, whereby the push button is in the initial It will be returned to the state.

However, in this conventional push button switch structure, when the angle θ is 30 ° or less, the force F'for returning the push button is centered on the hinge fulcrum due to the influence of frictional force. There was a case where the push button did not return because it was moved away from the rotation direction (return direction) of the push button. Furthermore, if the angle θ is 20 ° or less, the push button will never return.

Therefore, in the conventional push button switch structure, in such a case, the influence of the frictional force is suppressed by applying grease to the contact surface of the guide portion-push switch to reduce the frictional force thereof.

According to the present invention, the contact surface between the guide portion and the push switch is formed as an arbitrary inclined surface, so that the influence of these frictional forces can be reduced without applying grease, and the return movement of the push button can be made smooth. It is an object to provide a push button switch structure.

[0008]

A push button switch structure according to the present invention for achieving the above object is a push button supported by a support member by a hinge portion, a push switch, and a push button suspended from the push button. And a connecting member placed on the push switch, and the angle θ between the connecting line of the push switch contact point on the connecting member center line and the hinge fulcrum and the connecting member center line is 30 ° or less. In the switch structure, the contact surface between the push switch and the connecting member is an inclined surface that is formed toward the hinge fulcrum direction at an angle α with respect to the push switch mounting direction.

[0009]

In such a push button switch structure, the contact surface between the push switch and the connecting member is an inclined surface that is formed toward the hinge fulcrum direction with an angle α with respect to the push switch mounting direction. Therefore, the frictional force acting on these contact surfaces acts on the push button rotating direction (returning direction) about the hinge fulcrum by the angle α from the push switch mounting direction. Therefore, the resultant force of the frictional force, the push button restoring force due to the push switch restoring force, and the restoring force of the push button itself works in the direction approaching the push button rotation return direction as compared with the conventional push button switch structure. The influence of frictional force on the push button return is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a view for explaining the push button switch structure of the embodiment, and FIG. 2 is a view of the push button switch structure of the same embodiment. It is a figure explaining an effect.

In the figure, the same parts as those in FIG. 1 of the conventional example are designated by the same reference numerals.

In the figure, reference numeral 1 is a push button, the head portion of which protrudes from the front panel 5 of the device, and a hinge portion 1a integrally formed at one end of the bottom portion is provided between the PC board 4 and the front panel 5. Front bracket mounted on
A guide portion 1b, which is supported by 2 and is also integrally formed at the other end of the bottom portion, is placed on the push switch 3 on the PC board 4. This push button 1 is made of ABS resin, polystyrene, polypropylene, polybutylene terephthalate,
It is made of synthetic resin such as polycarbonate, polyacetal, polyimide and polyamide.

The length of the guide portion 1b is such that the center line is
The length is formed such that the angle between the contact point of the push switch 3 on the center line and the fulcrum of the hinge portion 1b is θ.
This angle θ is 30 ° or less because the drawbacks of the conventional push button switch structure are eliminated.

The contact surface between the guide portion 1b and the push switch 3 is in the direction of the PC board 4 (the mounting direction of the push switch 3).
And an angle α with respect to, and is an inclined surface directed toward the hinge portion 1a.

Next, the operation of the push button switch structure of the embodiment will be described with reference to FIG.

[Push button 1 Push switch by pressing
3 After operation, push button with push switch restoring force Fp
1 The restoring force is Fpsinθ, and the resultant force of this force Fpsinθ and the restoring force Fs of the push button 1 itself acts in the push button 1 returning direction. At this time, since the frictional force Ff acts on the contact surface between the guide portion 1b and the push switch 3, the resultant force F of the resultant force and the frictional force Ff becomes the force for returning the push button 1. Since the contact surface between the guide portion 1b and the push switch 3 is an inclined surface having the angle α, the frictional force Ff is at the angle α from the direction of the PC board 4 and the hinge portion 1a.
It acts on the push button 1 rotation direction (return direction) side around the fulcrum, and the resultant force for the push button 1 return
For F, the contact surface between the guide and push switch is PC board 4
Compared to the conventional pushbutton switch structure formed in the same direction as the pushbutton switch, the pushbutton 1 operates in a direction closer to the one-turn return direction. Therefore, the influence of frictional force on the return of the push button 1 is reduced, and the return operation of the push button 1 is smoothly performed.

In this embodiment, the angle α is set within the range of 0 ° <α ≦ (90 ° -θ). The optimum range of the angle α in the experiment was (90 ° -θ) / 4 <α ≦ (90 ° -θ) / 2.

The push-button switch structure according to the present invention has been described above in detail on the basis of a typical embodiment.
The embodiment of the push-button switch structure according to the present invention is not limited to the structure of the above-mentioned embodiment, and has the constituents described in the above-mentioned claims, and exhibits the function referred to in the present invention. As long as it has the effect described,
It can be appropriately modified and implemented.

[0019]

[Effect] In the push button switch structure according to the present invention, the contact surface between the push switch and the connecting member is an inclined surface that is formed toward the hinge fulcrum direction with an angle α with respect to the push switch mounting direction. Therefore, the frictional force acting on these contact surfaces acts on the push button rotation direction (returning direction) around the hinge fulcrum by the angle α from the push switch mounting direction, and this frictional force and push switch restoration Compared to the conventional push button switch structure, the combined force of the push button restoring force due to force and the restoring force of the push button itself works in the direction closer to the push button rotation return direction, so the influence of friction force on the push button return is reduced. Is
The push button can be smoothly returned without applying grease.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a push button switch structure according to an embodiment.

FIG. 2 is a view for explaining the operation of the push button switch structure of the embodiment.

FIG. 3 is a view for explaining a conventional push button switch structure.

FIG. 4 is a diagram for explaining the operation of a push button switch structure of a conventional example.

[Explanation of symbols]

 1 Push button 1a Hinge 1b Guide 2 Front bracket 3 Push switch 4 PC board 5 Front panel

Claims (1)

[Claims] 1. A push button supported on a support body by a hinge portion, a push switch, and a connecting member which is hung from the push button and mounted on the push switch. Angle θ between the switch contact point and the hinge fulcrum, and the center line of the connecting member
However, in the push button switch structure of 30 ° or less, the contact surface between the push switch and the connecting member is an inclined surface that is formed toward the hinge fulcrum direction at an angle α with respect to the push switch mounting direction. Push button switch structure characterized by