JPH04341714A - Push button switch with hinge - Google Patents

Abstract

PURPOSE:To check deterioration in characteristics of a rubber key and extend a life under the repeated keying. CONSTITUTION:An entitled push button switch with a hinge consists of a push button switch 12 fixed to one end of a hinge 13 and a frame 14 fixed to the other end of the hinge 13, and a push button 11, in which a setting-up position of this push button 12 is arranged in the position of a 1/2 stroke, is mounted on a sheath body 16 and a circuit substrate 17. At this time, the push button 12 is pushed up, and a rubber key 15 is arranged in the setting-up position, where the push button 12 and one end come in contact so to be pushed down by 1/2 stroke downward from the setting-up position at the time of being pushed down.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinged pushbutton switch used in telephones, keyboards, etc.

0002

2. Description of the Related Art FIGS. 5(a) and 5(b) show a conventional hinged pushbutton switch.

In FIGS. 5(a) and 5(b), 1 is a hinged push button, and this hinged push button 1 has a hinge 3 attached to a push button 2.
One end of the hinge 3 is fixed, and the other end of the hinge 3 is fixed to the frame 4. 5 is a rubber key, 6 is an exterior body, and 7 is a circuit board.

[0004] The operation of the above structure will be explained. At the time of mounting, the hinged push button 1 is set at a position in which it is not pressed down with the stroke shown in FIG. 5(a).

As shown in FIG. 5(b), when the key is depressed by a person's finger M, it moves by a stroke a, and the hinge 3 also bends by a stroke a, so that the contact point of the rubber key 5 is connected to a circuit board 7 (not shown). It is designed to make contact with the contact point.

[0006]

However, in the above conventional hinged push button switch, when the hinge 3 is bent by the stroke a, a repulsive force Fa is generated and the characteristics of the rubber key 5 are lost as shown in FIG. There was a problem that the rate was getting worse.

Further, when the stroke a is large, the amount of deflection of the hinge 3 becomes large, and there is a problem that the hinge 3 may be damaged by repeated keystrokes, resulting in a shortened lifespan.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide an excellent hinged push-button switch that can extend the lifespan of the switch due to repeated keystrokes and prevent deterioration of the characteristics of the rubber key.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention sets the setting position of the hinged push button to a 1/2 stroke position, and when mounted, is pushed up by a rubber key, and when pressed down, the setting position of the hinged push button is set to 1/2 stroke position. Further 1/2 from the position
It is designed to be pushed down towards the bottom of the stroke. Furthermore, the setting position of the hinged push button is located below the center of the stroke.

Furthermore, the position of the hinged push button is set at the lowest position of the stroke.

[0011]

[Operations] The present invention has the following functions due to the above structure.

[0012] The bending of the hinge is reduced to half that of the conventional one, and the lifespan of the keypad due to repeated keystrokes can be extended.

[0013] Furthermore, the repulsive force due to the bending of the hinge is more likely to act in the direction of pressing down on the rubber key, and deterioration of the characteristics of the rubber key can be prevented.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1(a) and 1(b) show a hinged push button. Note that FIG. 1(b) shows a cross section taken along line A-A.

The hinged push button 11 has a hinge 1 on the push button 12.
One end of the hinge 3 is fixed, and the other end of the hinge 13 is fixed to the frame 14.

FIG. 2 shows a state in which the hinged push button 11 is arranged, 15 is a rubber key, 16 is an exterior body, and 17 is a circuit board.

FIG. 2(a) shows the setting position of the push button 12 with respect to the previous stroke a shown in FIG. 5, and is set at a position 1/2 of this stroke a.

Then, as shown in FIG. 2(b), the rubber key 15
In the mounted state, the push button 12 is pushed upward by the initial load Fb of the rubber key 15 shown in FIG. The deflection of the hinge 13 at this time is half of the previous stroke a shown in FIG. 5, and the repulsive force by the hinge 13 is -1/2 Fa as shown in FIG. 3, acting in the direction of pushing down the rubber key 15.

Next, as shown in FIG. 2(c), in the mounted state when pressed, the push button 12 is pushed down by a stroke a due to the mounted state in FIG. 2(b), and the bending of the hinge 13 is equal to the stroke a. The repulsive force of the hinge 13 is 1/2Fa, as shown in FIG.

FIG. 4 shows another embodiment of the hinged push button 1.
1 is set below half of the stroke a, or at the lowest position, so that the repulsive force that pushes up the hinged push button 11 when the push button 12 is pressed down is reduced. There is.

[0022]

As is clear from the above-mentioned embodiments, the present invention has the effect that the bending of the hinge is reduced to half of that of the conventional key, thereby extending the life of the key due to repeated keystrokes.

[0023] Furthermore, the repulsive force due to the bending of the hinge is more likely to act in the direction of pressing down the rubber key, which has the effect of preventing deterioration of the characteristics of the rubber key.

Furthermore, by reducing the repulsive force of the hinge push button that affects the characteristics of the rubber key, it has the effect of improving the click rate.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a hinged pushbutton in a hinged pushbutton switch of the present invention.

[Figure 2] Cross-sectional view showing the state in which the hinged push button is arranged

[Figure 3] Characteristic diagram of rubber key

[Fig. 4] A sectional view showing a state in which a hinged push button of another embodiment is arranged.

[Figure 5] Diagram showing the configuration of a conventional hinged pushbutton switch

[Explanation of symbols]

11 Hinged push button 12 Push button 13 Hinge 14 Frame 15 Rubber key 16 Exterior body 17 Circuit board

Claims (3)

[Claims] Claim 1: Consisting of a hinge, a push button fixed to one end of the hinge that strokes up and down, and a frame fixed to the other end of the hinge, and the set position of the push button is set to a 1/2 stroke position. The hinged push button and
When the mechanism for mounting this hinged push button and the above hinged push button are mounted, the push button of the hinged push button is pushed up, and when pressed down, it is further 1/2 from the set position.
A hinged push-button switch comprising: a rubber key disposed at a setting position where one end contacts the push button so as to be pressed down under the stroke. 2. The hinged pushbutton switch according to claim 1, wherein the position of the hinged pushbutton is set below the center of the stroke. 3. The hinged pushbutton switch according to claim 1, wherein the position of the hinged pushbutton is set at the lower side of the stroke.