JPH037854Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a push-button switch that uses a sheet-like switch in the circuit opening/closing mechanism. Regarding structure.

(b) Background of the technology In the information age, the demand for keyboards continues to increase, and along with this, there is a demand for lower prices and thinner keyboards. As one way to meet this demand, push-button switches that use a sheet-like switch in the circuit opening/closing mechanism have been put into practical use.

On the other hand, in order to construct an easy-to-use keyboard, we need a snap action (hereinafter referred to as snap action) that notifies the operator's fingertips that the key top is pressed and a pushbutton switch is activated. An important point is that it can be added to the push button switch. If a snap action is not added to the pushbutton switch, the operator will be slow to notice a keystroke mistake, causing a decrease in efficiency and making the keyboard difficult to use. Therefore, it is desired to develop a push-button switch that can add a snap action and uses a sheet-like switch.

(c) Prior Art and Problems Figure 1 is a sectional view of a push button switch using a conventional sheet-like switch. The slider 12, which is integrally formed with the key top 11, is fitted into a housing 13 attached to a panel 15, and its lower surface contacts the pressure receiving part 14c of the actuator 14, which is crimped to the crimped part 13a of the housing 13, by applying initial pressure. ing. The actuator 14 is caulked so that the curved portion 14a is in contact with the support portion 13b of the housing 13 as shown in the figure, and the contact portion 9 is positioned below the pressing convex portion 14d with a predetermined distance. , a panel 1 in which a board (not shown) to which a sheet-like switch 8 is fixed also serves as a frame.
It is fixed at 5.

Fig. 2 shows the operating state of the actuator 14, Fig. 2a shows the shape of the actuator 14 when the slider 12 is removed, and Fig. 2b shows the shape of the actuator 14 when the slider 12 is removed.
2 is not pressed down, the pressure receiving part 14c pushes the slider 12 upward with an initial pressure, and a predetermined distance d is formed between the pressing convex part 14d and the sheet-like switch 8, as shown in FIG. is the state in which the slider 12 is pressed down, and the pressing convex portion 14d is the sheet-like switch 8.
is pressed down, and the contact portion 9 is closed.

In this way, conventional push-button switches use a sheet-like switch for the circuit opening/closing mechanism and at the same time employ an actuator as the stroke conversion mechanism. However, the structure is not such that a snap action can be added.

(d) Purpose of the invention The purpose of the present invention is to provide a push-button switch structure that can be equipped with a snap action and uses a sheet-like switch.

(e) Structure of the invention This object is achieved by providing a step on the surface of the slider that comes into contact with the actuator.

(f) Examples of the invention Examples of the invention will be explained below with reference to the attached drawings.
Objects that are the same as in FIGS. 1 and 2 are designated by the same reference numerals. FIG. 3 shows an embodiment of the present invention, in which FIG. 3a shows a sectional view when the device is opened, and FIG. 3b shows a sectional view when it is pressed down.

In FIG. 3a, the slider 22, which is integrally formed with the key top 21, is fitted into the housing 13 attached to the panel 15, and the lower surface of the slider 22 is connected to the pressure receiving part 14c of the actuator 14, which is crimped to the crimped part 13a of the housing 13. It is in contact with pressure. The actuator 14 is caulked so that the curved portion 14a is in contact with the support portion 13b of the housing 13 as shown in the figure, and the contact portion 9 is positioned below the pressing convex portion 14d with a predetermined distance. A board 10 (not shown) to which a sheet-like switch 8 is fixed is fixed to a panel 15 which also serves as a frame.

A step is provided on the lower surface of the slider 22, which is integrally molded with the key top 21. That is, the protruding convex surface 22a and the recessed concave surface 22
b is provided. Then, in the process of the push button switch shifting from the open state shown in FIG. 3a to the pressed state shown in FIG. It moves while sliding down from 22a to concave surface 22b.

The force with which the actuator 14 presses down the key top 21 against the force pushing up the slider 22 integrally formed with the key top 21 (referred to as a pressing force) is the force exerted by the actuator 1 when opened as shown in FIG. 3a.
The initial pressure applied to the pressure receiving portion 14c of No. 4 is the starting point, and increases gradually as the key top 21 is pressed down, reaching a maximum in the pressed state shown in FIG. 3b. If the lower surface is flat like the conventional slider 12, the pressing force increases uniformly, but like the slider 22 of the present invention, the lower surface has a convex surface 22a and a concave surface 22b.
If there is a step, the pressure receiving part 14 of the actuator 14
When c passes through the step from the convex surface 22a to the concave surface 22b, the pressing force decreases once, and then increases again to reach the maximum value.

Changes in the pressing force that occur during the process of pressing the key top 21 are transmitted to the operator's fingertips and act as a snap action. The difference between the conventional push button switch and the push button switch of the present invention is that the slider 22 is integrally formed with the key top 21.
A push button switch with a snap action can be constructed by simply replacing the conventional slider.

(g) Effects of the invention As described above, according to the invention, it is possible to provide a push-button switch structure in which a snap action can be added and a sheet-like switch is used.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional push button switch, FIGS. 2 a to c are operating states of the actuator 14, FIG. 3 is an embodiment of the present invention, and FIG. 3 a is a sectional view when it is open.
FIG. 3b is a sectional view when pressed. In the figure, 8 is a sheet-like switch, 9 is a contact part, 10 is a board, 13 is a housing, 14 is an actuator, 14c is an actuator pressure receiving part, 15 is a panel, 21 is a key top, 22 is a slider, 2
2a indicates a convex surface, and 22b indicates a concave surface.

Claims (1)

[Claims for Utility Model Registration] It has a sheet-like switch 8, a slider 22, and an actuator 14, and the sheet-like switch 8 is a circuit opening/closing mechanism part of a push button switch, and a pair of contacts are connected through The slider 22 is operated to be pressed down and is supported in a housing 13 located above the sheet-like switch 8 so as to be vertically movable. The slider 22 has a lower surface consisting of a convex surface 22a and a concave surface 22b that form a step, and the actuator 14 is connected to the slider 22.
It is a stroke conversion mechanism that transmits the vertical movement of slides elastically on the convex surface 22a and the concave surface 22b, and press-down convex portion 1 at the other end.
4d is opposed to the contact portion 9, and the actuator 14 is connected to the slider 22.
When is pressed down, the actuator pressure receiving portion 14
A push button switch characterized in that c moves to the concave surface 22b while sliding elastically against the convex surface 22a.