TW201530585A - Structural improvements of button switch - Google Patents

Abstract

This invention relates to structural improvements of button switches. The button switch includes a base, a first conductive terminal, a second conductive terminal, a first elastic member, a second elastic member and a movable cover. The second elastic member is a spring defined by a fixing part, a compressing part and a contact part. As installed in a through part of the first elastic member, the spring positions the second elastic member by the fixing part, which is easy to install and places the compressing part and the contact part in the through part. Because the compressing part is shorter than a total height of the first elastic member, the first conductive terminal and the second conductive terminal are spaced by an interval and thus not conducted when the movable cover is not pressed. When the movable cover is pressed, the pressed movable cover compresses the first elastic member, which in turn drives the second elastic member to move. There is a distance for further pressing when the contact part of the second elastic member contacts the first conductive terminal and the second conductive terminal for conduction; thus when the movable cover is further pressed, the compressing part is compressed to render a further conduction with tight contact between the contact part and the first conductive terminal as well as the second conductive terminal. Therefore, unstable signals resulting from insufficient pressing force can be avoided; in addition, a user is able to sense feedback forces as pressing and releasing the first elastic member (conductive silicone).

Description

Structural improvement of push button switch

The invention relates to a button used on a keyboard, in particular to a structural improvement of a button switch capable of improving the stability of a button.

Press, because the conductive silicone press switch is in contact control, easy to manufacture and simple in structure, it is widely used in various electronic products, such as the general wireless remote control, digital walkman, or precision used in the market. On the equipment, and with the rapid development of technology, the functions of various electronic products are becoming more and more powerful and more and more, so that the switch must be able to withstand more uses and pressing actions, not only that, but also for precision. The sensitivity of the buttons on the instrument is even more demanding.

The structure of the push switch currently used in precision instrumentation is shown in Figure 1, which is a schematic diagram of the cross-sectional structure of the conventional button switch. The conventional button switch 1 is mainly composed of a base 10, a first conductive terminal 11, a second conductive terminal 12, a conductive silicone 13, a conductive carbon film 14, and a movable upper cover 15, since the conductive silicone 13 is mainly disposed on the base 10 and the movable upper cover 15 Between the first conductive terminal 11 and the second conductive terminal 12, when the movable upper cover 15 is pressed, the conductive silicone 13 is compressed, and the conductive silicone 13 is pressed to contact the conductive conductive film 14 to the first conductive terminal 11 at the same time. And the second conductive terminal 12 is turned on, because the conductive carbon film 14 has no compressible elasticity. If the conductive silicone 13 is pressed, if the applied force is uneven (left and right tilt) or the applied pressure is insufficient, the conductive carbon film 14 is easily caused. The first conductive terminal 11 and the second conductive terminal 12 are in poor contact, so When the switch is turned on, the unstable operation occurs, and the conductive carbon film has large impedance and poor life.

Therefore, how to solve the above problems and deficiencies in the above-mentioned applications, that is, the inventors of the present invention and those involved in the industry are eager to study the direction of improvement.

The main object of the present invention is that since the second elastic member is a spring structure, and because the compression portion of the second elastic member is shorter than the height of the first elastic member, a relative deformation amount or a compression amount is generated when the compression portion is subjected to pressure, The elasticity of the spring itself enables the contact relationship between the second elastic member and the first conductive terminal and the second conductive terminal to be accurately controlled when the push switch is pressed or released, thereby improving the stability of the push switch when pressed.

In order to achieve the above object, the present invention is a structural improvement of a push button switch. The push switch includes a base, and the base is formed with a receiving portion for providing a first conductive terminal and a second conductive terminal. a first elastic member, the first elastic member is disposed on the receiving portion, and the first elastic member forms a pair of through portions corresponding to the positions of the first conductive terminal and the second conductive terminal; The second elastic member defines a fixing portion disposed on the first elastic member and located at the top of the penetrating portion, a compressing portion extending from the fixing portion and disposed at the penetrating portion, and a portion extending from the compressing portion and located a contact portion electrically connected to the first conductive terminal and the second conductive terminal above the first conductive terminal and the second conductive terminal; a movable upper cover, the movable upper cover is mounted on the base, and the movable cover is mounted on the base The movable cover forms a recess for the fixing portion, and the first elastic member and the second elastic member are compressed by pressing the movable upper cover. When pressed, the compressed portion of the second elastic member is compressed to make the contact Department and the The conductive terminal and the second conductive terminal are electrically connected to be electrically connected. When the pressure is released, the compressed portion is completely released from the first conductive terminal and the second conductive terminal and cannot be turned on. The first elastic member is pressed A sense of feedback is produced both when pressed and released.

According to an embodiment of the invention, the movable upper cover forms a plurality of undercut portions.

According to an embodiment of the invention, the base forms a plurality of guide grooves for moving the barb portion and an abutment portion located in the guide groove for hooking the barb portion to prevent detachment.

According to an embodiment of the invention, the length of the compression portion when it is not compressed is shorter than the height of the first elastic member.

According to an embodiment of the invention, the first elastic member is a conductive silicone.

According to an embodiment of the invention, the second elastic member is a spring.

Another object of the present invention is to enable the user to feel the feedback feeling of the first elastic member (conductive silicone) when the user presses the button switch or the release switch, so that the user can clearly know the pressing condition of the button switch when pressing. .

Another object of the present invention is to ensure that the second conductive terminal is disposed in the penetrating portion without being dropped or displaced by the positioning of the fixing portion, and further, the installer can easily assemble the device and save cost.

Conventional component

1‧‧‧Key switch

10‧‧‧Base

11‧‧‧First conductive terminal

12‧‧‧Second conductive terminal

13‧‧‧Electrical silicone

14‧‧‧ Conductive carbon film

15‧‧‧ activities covered

202‧‧‧Guide

204‧‧‧Resistance Department

21‧‧‧First conductive terminal

22‧‧‧Second conductive terminal

23‧‧‧First elastic parts

230‧‧‧ penetration

24‧‧‧Second elastic parts

240‧‧‧Fixed Department

Inventive component

2‧‧‧Key switch

20‧‧‧Base

200‧‧‧ Housing Department

242‧‧‧Compression Department

244‧‧‧Contacts

25‧‧‧ activities covered

252‧‧‧ recess

254‧‧‧Backrest

Figure 1 is a schematic cross-sectional view of a conventional push button switch.

2 is a perspective view of a preferred embodiment of the present invention.

3 is a perspective exploded view of a preferred embodiment of the present invention.

4 is a perspective exploded perspective view of another preferred embodiment of the present invention.

Figure 5 is a schematic cross-sectional view of a preferred embodiment of the present invention.

Figure 6 is a cross-sectional view showing the state of use when the invention has been pressed and turned uncompressed. intention.

Fig. 7 is a schematic cross-sectional view showing the state of use when the invention has been pressed and compressed.

Please refer to FIG. 2, FIG. 3, FIG. 4 and FIG. 5 for a perspective view, a perspective exploded view, a perspective exploded view and a cross-sectional view of another preferred embodiment of the invention. The present invention is a structural improvement of a push button switch. Each of the push button switches 2 is mounted on a circuit board having a plurality of soldering portions. Each of the push button switches 2 is mainly composed of a base 20, a first conductive terminal 21, a second conductive terminal 22, and a first The elastic member 23, the second elastic member 24 and the movable upper cover 25 are formed, wherein the base 20 is formed with a receiving portion 200, wherein the receiving portion 200 is mainly for providing the first conductive terminal 21 and the second conductive terminal 22 (provided on the base 20) The first elastic member 23 (which is a conductive silicone) is disposed in the accommodating portion, and the first elastic member 23 forms a corresponding first conductive terminal 21 and second. The second elastic member 24 (which is a spring) defines a fixing portion 240 disposed on the first elastic member 23 and located at the top of the through portion 230, and extends from the fixing portion 240. The first conductive terminal 21 and the second conductive terminal 22 are electrically connected to each other, and the first conductive terminal 21 and the second conductive terminal 22 are electrically connected to the first conductive terminal 21 and the second conductive terminal 22. Contact portion 244, and more importantly, The fixing portion 240 is larger than the inlet of the through portion 230 (the second elastic member 24 assumes a T-shaped state), so that the second elastic member 24 is disposed at the through portion 230 without being dropped or displaced, and thus compressed The length of the portion 242 when it is not compressed is shorter than the height of the first elastic member 23. In addition, when the first elastic member 243 is pressed or released, the elastic effect of the integral conductive silicone allows the user to obtain a feedback feeling. In other words, the user can clearly know the pressing condition of the push button switch when pressed or released.

Furthermore, the movable upper cover 25 is mounted on the base 20, and the movable upper cover 25 forms a recess 252 for receiving the fixing portion 240. In addition, the movable upper cover 25 forms a plurality of undercut portions 254, and the aforementioned base The 20 series forms a plurality of guide grooves 202 and abutting portion 204 located in the guide groove 202. When the movable upper cover 25 is assembled to the base 20, the movable upper cover 25 is movable through the undercut portion 254 to the guide groove 202, and is abutted by the abutting portion 204. The movable upper cover 25 is prevented from coming off the base 20.

It can be clearly understood from the foregoing structure that when the pressing is turned on without being compressed (please refer to FIG. 6), the movable upper cover 25 presses the first elastic member 23 downward, and the first elastic member 23 is deformed first and at the same time makes the second elastic The contact portion 244 on the member 24 is electrically connected to the first conductive terminal 21 and the second conductive terminal 22, but the compression portion 242 is not yet compressed, when the first elastic member 23 is completely pressed down (and reference is made. 7) The compressed portion 242 of the second elastic member 24 is compressed such that the contact portion 244 touches the first conductive terminal 21 and the second conductive terminal 22 to form conduction. In this way, the compression by the compression unit 242 improves the overall signal stability.

In this way, since the second elastic member 24 is a spring structure, and because the compression portion 242 of the second elastic member 24 is shorter than the height of the first elastic member 23, the relative deformation amount or compression amount is generated when the compression portion 242 is under pressure. Through the elasticity of the spring itself, the pressing relationship between the second elastic member 24 and the first conductive terminal 21 and the second conductive terminal 22 can be accurately controlled when the push switch is pressed or released, thereby improving the push-button contact of the push button switch. The stability of the time, at the same time, the feedback feeling is generated when the user presses or releases through the first elastic member.

The first conductive terminal 21 and the second conductive terminal 22 of the present invention can be assembled to the base 20 in an assembled manner, or the first conductive terminal 21 and the second conductive terminal 22 can be fixed to the base 10 by using a buried incident integrally formed. In addition to the above two methods, the connection with the circuit board can also be performed through the connection of the circuit board, and the manner of guiding the connection can be achieved without passing through the circuit board.

21‧‧‧First conductive terminal

22‧‧‧Second conductive terminal

23‧‧‧First elastic parts

24‧‧‧Second elastic parts

240‧‧‧Fixed Department

242‧‧‧Compression Department

244‧‧‧Contacts

Claims (6)

The structure of the push button switch comprises: a base, the base is formed with a receiving portion, the receiving portion is provided with a first conductive terminal and a second conductive terminal; a first elastic member, the The first elastic member is disposed on the receiving portion, and the first elastic member forms a pair of penetration portions corresponding to the positions of the first conductive terminal and the second conductive terminal; and a second elastic member, the second elastic member defines a fixing portion disposed on the first elastic member and located at the top of the penetrating portion, a compressing portion extending from the fixing portion and disposed at the penetrating portion, and a portion extending from the compressing portion and located at the first conductive terminal and the first portion a contact portion electrically connected to the first conductive terminal and the second conductive terminal; a movable upper cover, the movable upper cover is mounted on the base, and the movable upper cover forms a sleeve The concave portion of the fixing portion compresses the first elastic member and the second elastic member by pressing the movable upper cover, and when pressed, the compressed portion of the second elastic member is compressed to the contact portion and the first conductive terminal and The second guide When the terminal is electrically connected and is turned on, when the pressure is released, the compression portion is completely released from the first conductive terminal and the second conductive terminal and cannot be turned on, and the first elastic member is pressed and released. A sense of feedback is generated at all times. The structural improvement of the push button switch according to claim 1, wherein the movable upper cover forms a plurality of undercut portions. The structural improvement of the push button switch according to claim 1, wherein the base forms a plurality of guiding slots for moving the barb portion and is located in the guiding slot and is hooked by the barb portion to prevent separation Stop. The structural improvement of the push button switch described in claim 4, wherein the compression portion is not The length when compressed is shorter than the height of the first elastic member. The structural improvement of the push button switch according to claim 1, wherein the first elastic member is a conductive silicone. The structural improvement of the push button switch according to claim 1, wherein the second elastic member is a spring.