CN220710164U - Anti-false touch tact switch - Google Patents

Abstract

The utility model provides an anti-false touch tact switch, which relates to the technical field of switches and can effectively avoid false triggering of a contact switch under a non-working state, and comprises a bottom shell, an upper cover and a pressing handle; the bottom shell is internally provided with a concave cavity, and the bottom of the concave cavity of the bottom shell is provided with a conductive spring piece with an upward arched center; an elastic buffer structure is arranged between the pressing handle and the conductive spring piece, the elastic buffer structure can be elastically deformed after being subjected to downward pressure, and the elasticity of the elastic buffer structure is larger than that of the conductive spring piece; the center and the periphery of the bottom of the concave cavity are respectively provided with a first conductor and a second conductor, the center and the periphery of the conductive spring piece are respectively arranged corresponding to the first conductor and the second conductor, and when the conductive spring piece is deformed downwards, the center and the periphery of the conductive spring piece are respectively contacted with the first conductor and the second conductor.

Description

Anti-false touch tact switch

Technical Field

The utility model relates to the technical field of switches, in particular to an anti-false touch tact switch.

Background

When the touch switch is used, the switch function is pressed to be closed and turned on in the switch operation direction under the condition of meeting the operation force, and when the pressure is removed, the switch is turned off. The tact switch has the advantages of small contact resistance load, accurate operation force error, diversified specifications and the like, and is widely applied to electronic equipment, household appliances and the like, such as: audio-visual products, digital products, remote controllers, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment, currency examine pens, laser pen keys, and the like. Because of the sensitivity of the tact switch, false touch is extremely easy to cause in the actual use process, and the use effect is affected.

Disclosure of Invention

The utility model provides an anti-false touch switch which can effectively avoid false triggering of a touch switch under a non-working state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-false touch tact switch, which comprises a bottom shell, an upper cover fixedly arranged at the opening of the bottom shell, and a pressing handle arranged between the upper cover and the bottom shell; the bottom shell is internally provided with a concave cavity, the concave cavity bottom of the bottom shell is provided with a conductive spring piece with an upward arched center, and the conductive spring piece is of a circular structure; an elastic buffer structure is arranged between the pressing handle and the conductive spring piece, the elastic buffer structure can be elastically deformed after being subjected to downward pressure, and the elasticity of the elastic buffer structure is larger than that of the conductive spring piece; the center and the periphery of the bottom of the concave cavity are respectively provided with a first conductor and a second conductor, the center and the periphery of the conductive spring piece are respectively arranged corresponding to the first conductor and the second conductor, and when the conductive spring piece is deformed downwards, the center and the periphery of the conductive spring piece are respectively contacted with the first conductor and the second conductor.

In some embodiments, the elastic buffer structure comprises a hard upper pressing plate and a hard lower pressing plate which are arranged in a stacked mode, and an elastic piece is arranged between the hard upper pressing plate and the hard lower pressing plate.

In some embodiments, the conductive spring piece includes an annular peripheral portion with an inner edge upwardly arched, and a central arched portion disposed within the annular shape of the annular peripheral portion and with a center upwardly arched; the outer edge of the annular peripheral edge part is arranged on the supporting boss, and the central arched part and the annular peripheral edge part are respectively arranged corresponding to the first conductor and the second conductor; when the conductive spring piece is deformed downward by a downward pressure, the central arch portion and the annular peripheral portion are respectively in contact with the second conductor and the first conductor to conduct a circuit between the first conductor and the second conductor.

In some embodiments, a positioning block which is connected with the positioning groove of the circuit board in an adaptive manner is arranged at the bottom of the shell of the bottom shell, and the positioning block comprises two structures with different sizes.

In some embodiments, the pressing handle comprises a convex handle and an annular part arranged at the bottom of the convex handle, the convex handle is provided with a concave cavity, and a pressing column protruding downwards from the top of the concave cavity is arranged in the concave cavity; an auxiliary fixing plate is arranged between the pressing column and the inner wall of the convex handle; the convex handle penetrates through the upper cover and extends out of the upper cover, the annular part is limited below the upper cover, and the pressing column extends into the concave cavity of the bottom shell to be in contact with the elastic buffer structure.

In some embodiments, a locating plate for locating when in installation is arranged on the side edge of the upper cover.

The anti-false touch tact switch provided by the utility model is provided with the anti-false touch structure, if the pressing handle is touched carelessly under the non-working state, the elastic buffer structure is arranged between the pressing handle and the conductive spring piece, so that the elastic buffer structure can play a certain role in buffering, false triggering under the non-working state can be effectively avoided, and the problem that the tact switch in the prior art is extremely easy to cause false touch in the actual use process is solved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an anti-false touch tact switch according to an embodiment of the present utility model;

FIG. 2 is an exploded schematic view of the anti-false touch tact switch provided in FIG. 1;

fig. 3 is a schematic structural diagram of a bottom case of an anti-false touch tact switch according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of an elastic buffering structure of an anti-false touch tact switch according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a conductive spring piece of an anti-false touch tact switch according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a pressing handle of an anti-false touch tact switch according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of another view angle of the anti-false touch tact switch according to the embodiment of the present utility model.

Reference numerals

Anti-false touch tact switch 100; an upper cover 1; a positioning plate 11, a bottom shell 2; a first conductor 21; a truncated cone structure 21'; a second conductor 22; a limit boss 23; a support boss 24; a first terminal 25; a second terminal 26; a positioning block 27; a concave cavity A of the bottom shell; a first plane A01 at the bottom of the concave cavity; a second plane a02 of the bottom of the cavity; pressing the handle 3; a convex handle 31; an annular portion 32; a concave cavity B; a pressing post 33; an auxiliary fixing plate 33; a conductive spring piece 4; an annular peripheral edge portion 41; a central arch 42; an elastic buffer structure 5; a hard upper platen 51; a hard lower platen 52.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Embodiments of the present utility model provide an anti-false touch tact switch 100. As shown in fig. 1 to 3, the anti-false touch tact switch 100 includes an upper cover 1, a bottom case 2, a pressing handle 3, a conductive spring piece 4, and an elastic buffer structure 5. The upper cover 1 is fixedly arranged at the opening of the bottom shell 2, and the pressing handle 3 is arranged between the upper cover 1 and the bottom shell 2.

A concave cavity A is formed in the bottom shell 2; the conductive spring piece 4 is arranged at the bottom of the concave cavity A of the bottom shell 2 and the center of the conductive spring piece is arched upwards; the elastic buffer structure 5 is arranged between the pressing handle 3 and the conductive spring piece 4, and the elastic buffer structure 5 can be elastically deformed after being subjected to downward pressure.

As shown in fig. 1 to 3, each component upper cover 1, bottom shell 2, pressing handle 3, conductive spring piece 4 and elastic buffer structure 5 are all independent integral structures, and are simple in structure, convenient to process and manufacture and convenient to assemble, so that the manufacturing cost is low. The components may be assembled together to form a unitary structure. Illustratively, the bottom case 2 and the upper cover 1 may be fixedly mounted together by screws.

As shown in fig. 1 to 3, the center and the periphery of the bottom of the cavity a of the bottom case 2 are respectively provided with a first conductor 21 and a second conductor 22. It will be appreciated that the first conductor 21 and the second conductor 22 are separated from each other and that the electrical circuit therebetween is not conductive.

As shown in fig. 1 to 3, the center and the periphery of the conductive spring piece 4 are respectively disposed corresponding to the first conductor 21 and the second conductor 22; when the pressing handle 3 applies downward pressure to the elastic buffer structure 5 under the action of external pressure, the elastic buffer structure 5 transmits the downward pressure to the conductive spring piece 4, the conductive spring piece 4 deforms downward, and the center and the periphery of the conductive spring piece 4 are respectively contacted with the first conductor 21 and the second conductor 22 so as to conduct a circuit between the first conductor 21 and the second conductor 22.

It should be noted that, first, as shown in fig. 1 to 3, the conductive spring piece 4 is disposed at the bottom in the bottom shell 2, and the periphery of the conductive spring piece 4 abuts against the bottom in the bottom shell 2, that is, the periphery of the conductive spring piece 4 supports the center of the conductive spring piece 4, so that the center of the conductive spring piece 4 is not in contact with the bottom in the bottom shell 2 when no external pressure acts on the conductive spring piece 4. That is, when no external pressure acts on the conductive spring piece 4, the center of the conductive spring piece 4 is not in contact with the first conductor 21; as to the perimeter of the conductive spring plate 4, in some embodiments, it may be in contact with the second conductor 22, in such embodiments, the second conductor 22 also acting as a support for the conductive spring plate 4; in other embodiments, it is also possible to provide no contact with the second conductor 22 and a supporting point, for example, as shown in fig. 3 and 4, a supporting boss 24 for supporting the conductive spring piece 4 is provided exclusively in some embodiments hereinafter. The embodiment provided by the utility model is exemplified only by taking the case that the periphery of the conductive spring piece 4 is not in contact with the second conductor 22 and the supporting point is additionally provided.

Second, as shown in fig. 1 to 3, when a downward pressure is applied, the conductive spring piece 4 is deformed downward, and the center and the periphery of the conductive spring piece 4 are respectively in contact with the first conductor 21 and the second conductor 22, thereby making a circuit between the first conductor 21 and the second conductor 22 conductive. When the downward pressure applied to the conductive spring piece 4 is released, the conductive spring piece 4 is reset by its own elastic force, that is, the center of the conductive spring piece 4 is arched up again, so that at least the center of the conductive spring piece 4 is no longer in contact with the first conductor 21, and the circuit between the first conductor 21 and the second conductor 22 is disconnected.

As shown in fig. 1 to 3, when the electric circuit is to be conducted, the pressing handle 3 is pressed downward to conduct the electric circuit between the first conductor 21 and the second conductor 22. When the circuit is to be broken, the pressure applied to the pressing handle 3 is released, so that the circuit between the first conductor 21 and the second conductor 22 is broken.

As shown in fig. 1 to 3, if the pressing handle 3 is touched carelessly in the non-working state, the elastic buffer structure 5 is arranged between the pressing handle 3 and the conductive spring piece 4, and the elastic buffer structure 5 can play a certain role in buffering, so that false triggering in the non-working state can be effectively avoided.

Based on this, the anti-false touch tact switch 100 provided by the utility model has the advantages of simple structure, convenient processing and manufacturing, convenient assembly and low manufacturing cost, can effectively avoid false triggering under a non-working state, and solves the problem that the tact switch in the prior art is extremely easy to cause false touch in the actual use process.

In some embodiments, as shown in fig. 4, the elastic buffering structure 5 includes a hard upper pressing plate 51 and a hard lower pressing plate 52 that are stacked, an elastic member 53 is disposed between the hard upper pressing plate 51 and the hard lower pressing plate 52, both the hard upper pressing plate 51 and the hard lower pressing plate 52 are made of plastic materials, the elastic member 53 may use a plurality of rubber particles distributed at intervals, one of the hard upper pressing plate 51 and the hard lower pressing plate 52 may be provided with the rubber particles as a whole, so as to prevent the rubber particles from being displaced, and the elasticity of the elastic buffering structure (particularly, the rubber particles) is greater than the elasticity of the conductive spring sheet 4, so that the rubber particles are easier to deform when the pressing handle is pressed, and therefore the elastic buffering structure is pressed and deformed first when the pressing handle is pressed down, and further presses down against the elastic sheet 4.

In some embodiments, as shown in fig. 3, the bottom of the cavity a has a stepped structure, including a first plane a01 and a second plane a02 located at the center and the periphery of the bottom of the cavity a, respectively; the first conductor 21 and the second conductor 22 are respectively arranged on the first plane a01 and the second plane a02, and the first plane a01 is lower than the second plane a02 to form the step structure. This causes the first conductor 21 and the second conductor 22 to be arranged spaced apart from each other, thereby blocking the electrical contact therebetween. In addition, even if moisture enters the cavity a of the bottom case 1, since the first conductor 21 and the second conductor 22 are respectively disposed in different layers, a short circuit between the first conductor 21 and the second conductor 22 is avoided to a certain extent, so as to better ensure a good functional effect of the anti-false touch tact switch 100.

Further, as shown in fig. 3, the first conductor 21 and the second conductor 22 are integrally formed with the bottom case 2. The first conductor 21 and the second conductor 22 are fixed at the bottom of the concave cavity A more stably by adopting integral injection molding, and are directly embedded into the bottom of the concave cavity A, so that the first conductor and the second conductor are fixed, and cannot fall off.

Specifically, as shown in fig. 3, the first conductor 21 is configured as a truncated cone structure 21' protruding upwards from a first plane a01 at the bottom of the cavity a; the second conductor 22 is arranged as a sheet-like structure 22' adapted to the second plane a02 of the bottom of the cavity; the first conductor 21 is slightly higher than the second conductor 22, and the difference in height between the first conductor 21 and the second conductor 22 is less than 2mm. This allows the first conductor 21 and the second conductor 22 to be more structurally adapted to the conductive spring plate 4, thereby allowing the first conductor 21 and the second conductor 22 to be more effectively in contact with the center and the periphery of the conductive spring plate 4, respectively.

In some embodiments, as shown in fig. 2 and 3, on the second plane a02 of the bottom of the concave cavity, four limiting bosses 23 are formed by protruding radially inward inner walls at four corners of the concave cavity a of the bottom shell 2, and the peripheral edges of the conductive spring piece 4 are embedded in the middle of the four limiting bosses 23. The setting of the limit boss 23 makes the conductive spring piece 4 more fit with the concave cavity A of the bottom shell 2.

In some embodiments, as shown in fig. 2 and 3, a supporting boss 24 for supporting the conductive spring piece 4 is further disposed on the second plane a02 at the bottom of the cavity a; the conductive spring piece 4 is disposed on the support boss 24. Thus, when no external pressure acts on the conductive spring piece 4, the conductive spring piece 4 is not contacted with the second conductor 22 under the support of the support boss 24, so that the conductive spring piece 4 can not damage the second conductor 22 even if the pressing handle 4 is frequently pressed, and the service life of the anti-false touch tact switch 100 is effectively ensured.

In some embodiments, as shown in fig. 2, 3 and 5, the conductive spring piece 4 includes an annular peripheral edge portion 41 whose inner edge is upwardly arched, and a central arched portion 42 provided in the annular shape of the annular peripheral edge portion 41 and whose center is upwardly arched; the outer edge of the annular peripheral edge portion 41 is disposed on the support boss 24, and the central arch portion 42 and the annular peripheral edge portion 41 are disposed corresponding to the first conductor 21 and the second conductor 22, respectively; when the conductive spring piece 4 is deformed downward by a downward pressure, the central arch portion 42 and the annular peripheral edge portion 41 are respectively brought into contact with the second conductor 22 and the first conductor 21 to conduct a circuit between the first conductor 21 and the second conductor 22. The conductive spring piece 4 provided in this embodiment is simple in structure and easy to process.

In some embodiments, as shown in fig. 3, the anti-false touch switch 100 further includes a first terminal 25 and a second terminal 26 disposed on the bottom case 2, one ends of the first terminal 25 and the second terminal 26 extend into the bottom case 2 and are electrically connected to the first conductor 21 and the second conductor 22, respectively, and the other ends of the first terminal 25 and the second terminal 26 extend out of the bottom case 2 to form a power pin. The arrangement of the first terminal 25 and the second terminal 26 plays a role in conducting electricity, and meanwhile, the anti-false touch tact switch 100 is convenient to be inserted on a PCB, so that the anti-false touch tact switch is not easy to fall off the PCB.

In some embodiments, as shown in fig. 7, a positioning block 27 adapted to be connected with a positioning slot of a PCB is disposed at the bottom of the housing of the bottom case 2, and the positioning block 27 includes two structures with different sizes. The positioning block 27 is arranged to facilitate the installation of the anti-false touch tact switch 100.

In some embodiments, as shown in fig. 6, the pressing handle 3 includes a convex handle 31 and an annular portion 32 disposed at the bottom of the convex handle 31, the convex handle 31 has a concave cavity B in which a pressing post 33 protruding downward from the top thereof is disposed; an auxiliary fixing plate 33 is arranged between the pressing column 33 and the inner wall of the convex handle 31. In this way, the pressure applied to the lug 31 is transferred to the pressing post 33, and the pressing post 33 acts on the center of the conductive spring piece 4, but does not act on other parts outside the center, so that the conductive spring piece 4 can be deformed downwards under the action of external force to a certain extent.

Further, as shown in fig. 1, 2 and 6, the protruding handle 31 extends out of the upper cover 1 through the upper cover 1, the annular portion 32 is limited below the upper cover 1, the pressing post 33 extends into the cavity of the bottom shell 2, and the pressing post 33 corresponds to the center of the conductive spring piece 4 in a position up and down. Further, the up-and-down movement of the pressing handle 3 is limited above the center of the conductive spring piece 4, so that the pressing post 33 acts on the center of the conductive spring piece 4 and does not act on other parts outside the center, and the conductive spring piece 4 can be deformed downwards under the action of external force to a certain extent.

In some embodiments, as shown in fig. 1, in some embodiments, a positioning plate 11 for positioning during installation is disposed on a side edge of the upper cover 1, and the positioning plate 11 plays a positioning role when the anti-false touch tact switch 100 is in use, specifically, the positioning plate 11 and the external fixing portion can be used for fixing, so as to ensure the installation firmness of the tact switch, and meanwhile, the positioning plate 11 can also realize grounding.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (6)

1. The anti-false touch tact switch is characterized by comprising a bottom shell, an upper cover fixedly arranged at an opening of the bottom shell and a pressing handle arranged between the upper cover and the bottom shell; the bottom shell is internally provided with a concave cavity, the concave cavity bottom of the bottom shell is provided with a conductive spring piece with an upward arched center, and the conductive spring piece is of a circular structure; an elastic buffer structure is arranged between the pressing handle and the conductive spring piece, the elastic buffer structure can be elastically deformed after being subjected to downward pressure, and the elasticity of the elastic buffer structure is larger than that of the conductive spring piece;

the center and the periphery of the bottom of the concave cavity are respectively provided with a first conductor and a second conductor, the center and the periphery of the conductive spring piece are respectively arranged corresponding to the first conductor and the second conductor, and when the conductive spring piece is deformed downwards, the center and the periphery of the conductive spring piece are respectively contacted with the first conductor and the second conductor.

2. The false touch prevention tact switch according to claim 1, wherein the elastic buffer structure comprises a hard upper pressing plate and a hard lower pressing plate which are arranged in a stacked manner, and an elastic piece is arranged between the hard upper pressing plate and the hard lower pressing plate.

3. The false touch prevention tact switch according to claim 1, wherein the conductive spring piece includes an annular peripheral edge portion whose inner edge is upwardly arched, and a center arched portion provided in the annular inner edge of the annular peripheral edge portion and whose center is upwardly arched;

the outer edge of the annular peripheral edge part is arranged on the supporting boss, and the central arched part and the annular peripheral edge part are respectively arranged corresponding to the first conductor and the second conductor; when the conductive spring piece is deformed downward by a downward pressure, the central arch portion and the annular peripheral portion are respectively in contact with the second conductor and the first conductor to conduct a circuit between the first conductor and the second conductor.

4. The false touch prevention tact switch according to claim 1, wherein a positioning block which is connected with a positioning groove of a circuit board in an adaptive manner is arranged at the bottom of the shell of the bottom shell, and the positioning block comprises two structures with different sizes.

5. The false touch prevention tact switch according to claim 1, wherein the pressing handle comprises a convex handle and an annular part arranged at the bottom of the convex handle, the convex handle is provided with a concave cavity, and a pressing column protruding downwards from the top of the convex handle is arranged in the concave cavity; an auxiliary fixing plate is arranged between the pressing column and the inner wall of the convex handle;

the convex handle penetrates through the upper cover and extends out of the upper cover, the annular part is limited below the upper cover, and the pressing column extends into the concave cavity of the bottom shell to be in contact with the elastic buffer structure.

6. The false touch prevention tact switch according to claim 1, wherein a positioning plate for positioning at the time of installation is provided at a side edge of the upper cover.