TWI652709B - Push switch - Google Patents

Abstract

A push switch includes: an insulating carrier, a fixed terminal, a movable contact, an insulating elastic body, and a pressing cover. The insulating carrier has an inner bottom surface; the fixed terminal is disposed on the insulating carrier and has a first exposed portion; the movable contact piece is disposed corresponding to the fixed terminal and has a plurality of foot pad platforms, and the foot pad platform is divided into two parts respectively standing on the inner bottom surface and the first bare portion The pressing cover corresponds to the movable carrier to cover the movable cover; the insulating elastic body is elastically supported between the pressing cover and the movable contact piece. With these foot pad platforms, the movable contact will be able to be stably bridged between the insulating carrier and the fixed terminal. Thereby, a stable press contact effect and an effect of facilitating the smooth press action can be achieved.

Description

Push switch

The present invention relates to an operation switch for various types of electronic devices, and more particularly to a push switch including a pressing cover, a movable contact, a fixed terminal, and an insulating elastic member.

The push switch has a lead terminal and a lead contact strip. The lead terminal has a first electrode portion and a second electrode portion spaced apart from each other. The conductive contact piece is disposed corresponding to the lead terminal and electrically contacts the first electrode portion. . Thereby, when the user presses, the conductive contact piece is forced to be electrically connected to the second electrode portion, that is, the conductive contact piece is electrically connected between the first and second electrode portions to conduct the conductive terminal to achieve Pressing the purpose of turning on the existing push switch.

However, in the conventional push switch, since the conductive contact piece must be bridged between the two different elements of the insulating case and the lead terminal, and the two different elements are difficult to form the same height after being combined with each other, As a result, the conductive contact piece cannot be stably bridged between the insulating case and the conductive terminal, thereby causing instability of the pressing contact, which has long been criticized for a long time.

Therefore, how to design a novel that can improve the above-mentioned defects is a major issue that the creators of this case want to solve.

The purpose of the present invention is to provide a push switch that can stably connect the movable contact between the inner bottom surface of the insulating carrier and the first exposed portion of the fixed terminal, thereby having a stable pressing contact effect and even facilitating smooth pressing action. get on.

In order to achieve the above object, the present invention provides a push switch, comprising: an insulating carrier having an inner bottom surface; a fixed terminal disposed on the insulating carrier and having a first exposed portion exposed from the inner bottom surface; a sheet corresponding to the fixed terminal arrangement and having a plurality of foot pad platforms, a portion of the plurality of foot pad platforms standing on the inner bottom surface, and the other portion of the plurality of foot pad platforms standing at the first bare portion of the fixed terminal a pressing cover, a movable pressing corresponding to the insulating carrier cover; and an insulating elastic body elastically supported between the pressing cover and the movable contact; wherein the majority of the foot pad platform respectively stands on The inner bottom surface and the first exposed portion enable the movable contact to be stably bridged between the insulating carrier and the fixed terminal.

Compared with the prior art, the present invention has the following effects: it has a firm pressing contact effect, and even facilitates the smooth progress of the pressing action.

1‧‧‧Insulation carrier

10‧‧‧ accommodating space

11‧‧‧ inside bottom

12‧‧‧ ribs

13‧‧‧First positioning gap

14‧‧‧Second positioning gap

2‧‧‧Fixed terminals

21‧‧‧First fixed electrode

211‧‧‧First exposed department

22‧‧‧Second fixed electrode

221‧‧‧Second exposed department

222‧‧‧Second chip drain

3, 3a, 3b, 3c‧‧‧ activity contacts

31, 31c‧‧‧ outer ring electrode

311‧‧‧First positioning convex

312‧‧‧Second positioning convex

313‧‧‧ foot pad platform

32, 32c‧‧‧ central electrode

321‧‧‧Training platform

3211‧‧‧First chip trench

33, 33b, 33c‧‧‧ connecting the arm

331‧‧‧The middle section of the arc

332‧‧‧ head

4‧‧‧Insulating elastomer

5‧‧‧ Pressing the cover

Figure 1 is an exploded perspective view of the creation.

Figure 2 is a top plan view of the creation after partial combination.

Figure 3 is a three-dimensional combination of the creation.

Figure 4 is a cross-sectional view of the creation.

Figure 5 is a top perspective view of the first embodiment of the movable contact in the present creation.

Figure 6 is a bottom perspective view of the first embodiment of the active contact in the creation.

Figure 7 is a top plan view of the first embodiment of the active contact in the present creation.

Figure 8 is a top plan view of a second embodiment of the active contact in the present creation.

Figure 9 is a top plan view of a third embodiment of the active contact in the present creation.

Figure 10 is a top plan view of a fourth embodiment of the active contact in the present creation.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are provided for reference and description only, and are not intended to limit the creation.

As shown in FIG. 1 to FIG. 4, the present invention provides a push switch, which is an operation switch for various electronic devices, comprising: an insulating carrier 1, a fixed terminal 2, a movable contact 3, and an insulating elastic body. 4 and a pressing cover 5.

The insulating carrier 1 defines an accommodating space 10 and has an inner bottom surface 11 corresponding to the accommodating space 10. Preferably, the insulating carrier 1 further protrudes from the inner bottom surface 11 with a plurality of ribs 12 spaced apart from each other, so that a plurality of first positioning notches 13 and a plurality of second positioning notches are formed at intervals between the ribs 12 14. Specifically, two first positioning notches 13 opposed to each other and two second positioning notches 14 opposed to each other are formed as shown in the drawing.

The fixed terminal 2 includes a first fixed electrode 21 and a second fixed electrode 12 which are partially embedded in the insulating carrier 1 respectively. The first fixed electrode 21 has a first exposed portion 211 exposed from the inner bottom surface 11 and a second fixed electrode. 22 has a second exposed portion 221 exposed from the inner bottom surface 11. Further, the first exposed portion 211 and the second exposed portion 221 are spaced apart from each other and are located in a region surrounded by the plurality of ribs 12.

The movable contact 3 is disposed corresponding to the fixed terminal 2 and has a plurality of foot pad platforms 313. The structure of the movable contact 3 is not limited in this embodiment. In the present embodiment, the following description will be made by way of an example. The movable contact 3 includes an outer ring electrode 31, a center electrode 32, and a plurality of connecting elastic arms 33. The outer ring electrode 31 is adjacent to the central electrode 32 and electrically contacts the first exposed portion 211 of the first fixed electrode 21, and the majority The connecting elastic arm 33 is connected between the central electrode 32 and the outer ring electrode 31, so that the central electrode 32 can be elastically linearly translated relative to the outer ring electrode 31 after being subjected to force by a plurality of connecting elastic arms 33, and after linear translation The second fixed electrode 22 of the fixed terminal 2 is electrically connected. Further, most of the foot pad platforms 313 protrude from the bottom surface of the outer ring electrode 31 and are spaced apart from each other along the shape of the outer ring electrode 31.

Thereby, a part of the majority of the footrest platforms 313 will stand adjacent to each other on the aforementioned inner bottom surface 11 (i.e., standing in the left half of the insulating carrier 1 as shown in Fig. 4), and the other part of the majority of the footrest platforms 313 Then, standing adjacent to each other on the first fixed electrode 21 of the fixed terminal 2 (i.e., standing on the first bare portion 211 exposed to the right half of the insulating carrier 1 as shown in Fig. 4).

As for the insulating elastic body 4 and the pressing cover 5, the pressing cover 5 is movably pressed correspondingly to the insulating carrier 1 . Specifically, the pressing cover 5 is closed corresponding to the accommodating space 10 so that the pressing cover 5 can be accommodated. The space 10 is moved up and down by pressing. The insulating elastic body 4 in the upright tapered cylinder is elastically supported between the pressing cover 5 and the movable contact piece 3 to lengthen the pressing stroke and can push the pressing cover 5 upward, and the lower edge of the insulating elastic body 4 is limited to The majority of the aforementioned ribs 12 are prevented from shifting between them (see Figs. 1 and 3). Therefore, when the user presses the pressing cover 5 downward, the insulating elastic body 4 will be deformed and abuts against the central electrode 32, so that the central electrode 32 is linearly translated downward to be electrically connected to the second fixed electrode 22, Thereby, the movable contact 3 is bridged between the first and second fixed electrodes 21, 22 to turn on the fixed terminal 2, whereby the original push switch forms an on state.

It is worth noting that, during the pressing process, even if the insulating carrier 1 and the fixed terminal 2 are combined with each other and different heights appear as shown in FIG. 4, the creative activity contact 3 can still have a majority having a corresponding protruding length. The foot pad platform 313 is stably bridged between the insulating carrier 1 and the fixed terminal 2, and in detail, can be stably bridged between the inner bottom surface 11 of the insulating carrier 1 and the first fixed electrode 21 of the fixed terminal 2 (or It is stably bridged between the inner bottom surface 11 of the insulating carrier 1 and the first exposed portion 211 of the fixed terminal 2, and further has a stable pressing contact effect, and is even advantageous for the smooth progress of the pressing action.

In addition, in the fixed terminal 2, the second exposed portion 221 is provided with a plurality of second chip evacuation grooves 222 on a side of the center electrode 32 corresponding to the movable contact piece 3. Preferably, the second chip discharge grooves are formed. The 222 series are arranged in a crisscross shape and communicated with each other.

As shown in FIG. 6 , the bottom surface of the central electrode 32 of the movable contact 3 also has a guiding platform 321 . The guiding platform 321 is provided with a majority on the side of the second bare portion 221 corresponding to the fixed electrode 2 . The chip flutes 3211, the first chip flutes 3211 are externally connected and may be embossed designs that are criss-crossed to each other, but the present invention is not limited thereto.

Since the second fixed electrode 22 of the fixed terminal 2 and the central electrode 32 of the movable contact 3 must be frequently contacted, a plurality of second chip evacuation grooves 222 and a plurality of first chip evacuation grooves 3211 are respectively opened, so that dust can be removed. Concentrating in the first and second chip evacuation grooves 3211, 222 to avoid the problem of contact failure caused by dust stuck between the second fixed electrode 22 and the central electrode 32, and due to the first and second chip evacuation grooves 3211, The 222s are designed to cross each other and communicate with each other, and thus have the effect of concentrating dust from different directions.

5 to 7 and in conjunction with Figs. 1 to 4, a first embodiment of the movable contact 3 in the present creation is disclosed. In the movable contact 3, the outer ring electrode 31 surrounds the circular central electrode 32, and each connecting elastic arm 33 includes an arc curved middle portion 331 and two second end portions 332, which are respectively connected to the arc. Between one end of the curved middle section 331 and the central electrode 32 and between the other end of the curved upper section 331 and the outer ring electrode 31, and the central electrode 32 is bent away from the fixed terminal 2 by the bending of each connecting elastic arm 33 ( Or away from the second fixed electrode 22), the distance from the outer ring electrode 31 is a long distance (see FIG. 4), so that the central electrode 32 can be brought into contact with the second fixed electrode 22 after pressing, and after releasing the pressure channel The central electrode 32 can also be returned to a position higher than the outer ring electrode 31 by the elasticity of each of the connecting elastic arms 33.

Accordingly, by the special structure design of the movable contact 3 described above, the central electrode 32 of the movable contact 3 will move in a linear translation manner after being stressed, so that the contact portion of the insulating elastic body 4 is not generated. Friction, of course, does not wear the contact portion of the insulating elastic body 4, and thus does not cause carbonization, dirt, debris, and impurities due to abrasion, and has a problem of preventing contact conduction.

Further, since a plurality of connection elastic arms 33 are connected to the outer ring electrode 31 and the center electrode 32 in an average manner to disperse the stress of pressing, the effect of improving the life of the product is obtained.

In addition, the outer peripheral edge of the outer ring electrode 31 further has a plurality of first positioning convex portions 311 and a plurality of second positioning convex portions 312, and each of the first positioning convex portions 311 is correspondingly disposed in each of the first positioning notches 13 (see FIG. 2 and FIG. 3), each of the second positioning protrusions 312 is correspondingly disposed in each of the second positioning notches 14 in the foregoing manner, so that the movable contact piece 3 is stably fixed on the inner bottom surface 11 of the insulating carrier 1. Preferably, the number of the first positioning protrusions 311 is two and opposite to each other, and the number of the second positioning protrusions 312 is also two and opposite to each other.

As shown in Fig. 8, a second embodiment of the movable contact 3a in the present creation is disclosed. The second embodiment is substantially the same as the foregoing first embodiment except that the number of the connecting elastic arms 33 is two, and the number of the connecting elastic arms 33 of the first embodiment is two and disposed opposite to each other, and the number of the connecting elastic arms 33 of the second embodiment is the same. Then it is three and has an angle of 120 degrees with each other.

As shown in Fig. 9, a third embodiment of the movable contact 3b in the present creation is disclosed. The third embodiment is substantially the same as the foregoing second embodiment, with the difference that the shapes of the three connecting elastic arms 33b are different. As shown in the figure, the connecting elastic arms 33b of the third embodiment are all a trapezoidal sheet body, and the upper side (short side) of each trapezoidal sheet body is connected to the outer peripheral edge of the circular central electrode 32, and the lower side of each trapezoidal sheet body ( The long side is connected to the inner circumference of the annular outer ring electrode 31.

As shown in Fig. 10, a fourth embodiment of the movable contact 3c in the present creation is disclosed. The fourth embodiment is substantially the same as the foregoing third embodiment, with the difference that the number of the connecting elastic arms 33c is increased to four, and the formation is also different. As shown in the figure, the connecting elastic arms 33c of the fourth embodiment are all straight strips, and the two ends of each straight strip are respectively connected to the outer peripheral edge of the central electrode 32c and the inner peripheral edge of the outer ring electrode 31c. Preferably, the four connecting elastic arms 33c are connected in a crisscross shape.

In summary, the creation of the push switch can achieve the intended use, and thus solve the lack of prior art, and because of the novelty and progress, fully meet the requirements of the invention patent application, apply for the patent law, please Detailed investigation and grant of the patent in this case to protect the rights of the creator.

The above is only a preferred and feasible embodiment of the present invention, and thus does not limit the scope of the patent of the creation, and the equivalent structural changes that are made by using the present specification and the contents of the schema are all included in the creation. Within the scope of the rights, it is given to Chen Ming.

Claims (9)

A push switch includes: an insulating carrier having an inner bottom surface; a fixed terminal disposed on the insulating carrier and having a first exposed portion exposed from the inner bottom surface; a movable contact piece corresponding to the fixed terminal and including a central electrode, an outer ring electrode corresponding to the central electrode and electrically contacting the first exposed portion, and a plurality of connecting elastic arms uniformly connected between the central electrode and the outer ring electrode, the outer ring electrode protruding a majority of the foot pad platform, a portion of the majority of the foot pad platform standing on the inner bottom surface, and another portion of the plurality of foot pad platforms standing on the first exposed portion of the fixed terminal, the central electrode being uniformly distributed The plurality of connecting elastic arms are elastically translatable relative to the outer ring electrode after being stressed and electrically connected to the fixed terminal after translation; a pressing cover is movably pressed to correspond to the insulating carrier cover; An insulating elastic body is elastically supported between the pressing cover and the movable contact piece; wherein the plurality of foot pad platforms respectively stand on the inner bottom surface and the first exposed portion The movable contact piece can be stably connected across the insulating support with the fixed terminal. The push switch of claim 1, wherein the central electrode has a guiding platform, and the guiding platform has a plurality of first chip evacuating grooves on a side of the fixed electrode. The push switch of claim 1, wherein the outer peripheral edge of the outer ring electrode has a plurality of positioning protrusions, and the insulating carrier is provided with a plurality of positioning notches, and each of the positioning protrusions is disposed corresponding to each of the positioning notches. The movable contact can be stably fixed on the insulating carrier. The push switch of claim 1, wherein each of the connecting elastic arms comprises an arc curved middle section and two second end sections, the two head sections being respectively connected between an end portion of the arc curved middle section and the central electrode and the arc The other end of the curved middle portion is between the outer ring electrode and the outer ring electrode. The push switch according to claim 1, wherein each of the connecting elastic arms is a trapezoidal sheet body, and an upper side of each of the trapezoidal sheet bodies is connected to an outer circumference of the circular central electrode, and a lower side of each of the trapezoidal sheets is Connected to the inner circumference of the outer ring electrode of the circular ring. The push switch of claim 1, wherein each of the connecting elastic arms is a continuous strip body, and two ends of each of the straight strip bodies are respectively connected to an outer circumference of the central electrode and an inner circumference of the outer ring electrode. The push switch of claim 1, wherein the central electrode is higher in the direction away from the fixed terminal by the bending of each of the connecting elastic arms from the outer ring electrode. The push switch of claim 1, wherein the fixed terminal comprises a first fixed electrode and a second fixed electrode, the first fixed electrode has the first exposed portion, and the second fixed electrode has a second exposed portion The second exposed portion is provided with a plurality of second chip evacuation grooves on a side of the movable contact. The push switch of claim 8, wherein the plurality of second chip evacuation grooves are arranged in a crisscross shape and communicated with each other.