CN220324332U - Protective type tact switch - Google Patents

Abstract

The utility model provides a protective type tact switch, which relates to the technical field of switches, solves the problem of poor waterproof performance, has the advantages of water resistance and dust resistance, and further ensures that the service life and the safety of a product cannot be effectively ensured, and comprises a base, a cover plate and a button; the base is provided with an inner cavity; further comprises: the middle part of the inner wall of the inner cavity radially protrudes inwards to form a baffle table, the dustproof film is fixedly attached to the upper end surface of the baffle table, and the peripheral edges of the disc-shaped reed are embedded below the baffle table; the center and the periphery of the bottom of the inner cavity are respectively provided with a first conductive sheet and a second conductive sheet, and the center and the periphery of the disc-shaped reed are respectively arranged corresponding to the first conductive sheet and the second conductive sheet; when the button applies downward pressure to the disc-shaped reed under the action of external pressure, the disc-shaped reed deforms downwards, and the center and the periphery of the disc-shaped reed are respectively contacted with the first conductive sheet and the second conductive sheet so as to conduct a circuit between the first conductive sheet and the second conductive sheet.

Description

Protective type tact switch

Technical Field

The utility model relates to the technical field of switches, in particular to a protective type tact switch.

Background

The protective type light touch switch is also called a key switch or a sensitive switch, when in use, the switch function is pressed to be closed and closed in the switch operation direction under the condition of meeting the operation force, and when the pressure is withdrawn, the switch is opened. The protection type touch 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. The existing protective type tact switch is characterized in that the parts mounted up and down are in plane contact generally, water or dust can infiltrate from the plane joint of the parts, water or dust is easy to enter the product, and therefore the problems of short circuit, poor functions and the like of the switch are caused.

Disclosure of Invention

The utility model provides a protective type tact switch which solves the problem of poor waterproof performance and has the advantages of water resistance and dust resistance, so that the service life and the safety of a product are effectively ensured.

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

provided is a protective tact switch including: the device comprises a base, a cover plate buckled with the base, and a button arranged between the cover plate and the base; wherein the base has an inner cavity; the protection type tact switch further comprises: the dustproof film is fixedly attached to the upper end surface of the baffle table, and the peripheral edges of the disc-shaped reed are embedded below the baffle table; the center and the periphery of the bottom of the inner cavity are respectively provided with a first conductive sheet and a second conductive sheet, and the center and the periphery of the disc-shaped reed are respectively arranged corresponding to the first conductive sheet and the second conductive sheet; when the button applies downward pressure to the disc-shaped reed under the action of external pressure, the disc-shaped reed deforms downwards, and the center and the periphery of the disc-shaped reed are respectively contacted with the first conductive sheet and the second conductive sheet so as to conduct a circuit between the first conductive sheet and the second conductive sheet.

In some embodiments, the dustproof film is made of polyimide.

In some embodiments, the bottom portion of the lumen is provided in two layers, including a first layer and a second layer at the center and periphery of the bottom portion of the lumen, respectively, and the second layer is slightly higher than the first layer; the first conductive sheet and the second conductive sheet are disposed on the first layer and the second layer, respectively.

In some embodiments, the first layer and the second layer are respectively arranged in a circular shape and a ring shape, and the first conductive sheet and the second conductive sheet are respectively arranged in a circular shape and a ring shape which are matched with the first layer and the second layer.

In some embodiments, the first conductive sheet and the second conductive sheet are provided with a first contact block and a second contact block, respectively; the second layer is also provided with a supporting block for supporting the disc-shaped reed; the second contact block is slightly higher than the first contact block, and the supporting block is slightly higher than the second contact block; the disc-shaped reed is arranged on the supporting block.

In some embodiments, the first contact block and the second contact block are arranged in a circular shape and a sector-shaped shape, respectively.

In some embodiments, wherein the disk-shaped reed comprises an annular peripheral portion with an inner edge that arches upward, and a circular central portion disposed within the annular shape of the annular peripheral portion and with a center that arches upward; the outer edge of the annular peripheral edge part is arranged on the supporting block, and the round central part and the annular peripheral edge part are respectively arranged corresponding to the first contact block and the second contact block; when the reed is deformed downward by a downward pressure, the circular center portion and the annular peripheral portion are respectively in contact with the first contact block and the second contact block to conduct a circuit between the first conductive sheet and the second conductive sheet.

In some embodiments, the protection type tact switch further includes a first clamping member and a second clamping member disposed at the bottom of the base, the upper ends of the first clamping member and the second clamping member extend into the base to be electrically connected with the first conductive sheet and the second conductive sheet respectively, and the lower ends of the first clamping member and the second clamping member extend out of the base to form pins.

In some embodiments, the button comprises a flat plate part, and a first pressing protrusion and a second pressing protrusion which are respectively arranged on the upper side and the lower side of the flat plate part, wherein the first pressing protrusion is in a cylindrical structure, and the second pressing protrusion is in a circular truncated cone structure; the first pressing protrusion penetrates through the cover plate to extend out of the cover plate, the second pressing protrusion extends into the inner cavity of the base and contacts with the dustproof film, and the flat plate portion of the button is limited between the cover plate and the base.

In some embodiments, an elastic buckle is arranged on the cover plate, and the elastic buckle comprises a body and a buckle foot arranged at the lower end of the body; a first clamping block is arranged on the base corresponding to the buckling pin; the buckling pin is correspondingly clamped with the first clamping block; a second clamping block is arranged between the two first clamping blocks, and the body of the elastic buckle is limited between the first clamping blocks and the second clamping blocks.

The protective type tact switch comprises a base, a cover plate, a button, a dustproof film and a disc-shaped reed, wherein the middle part of the inner wall of the inner cavity of the base is radially inwards protruded to form a baffle table, the dustproof film is fixedly attached to the upper end surface of the baffle table, the periphery of the disc-shaped reed is embedded below the baffle table, so that the dustproof film and the inner wall of the inner cavity of the base enclose a closed space, the disc-shaped reed, a first conducting sheet and a second conducting sheet are positioned in the closed space, and the conducting structure of the protective type tact switch can isolate moisture or dust in the air in the use process, so that the waterproof and dustproof effects can be achieved, and the service life and the safety of the protective type tact switch can not be effectively ensured.

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 a protective tact switch according to an embodiment of the present utility model;

FIG. 2 is an exploded schematic view of the protective tact switch provided in FIG. 1;

fig. 3 is a schematic structural diagram of a base of a protective tact switch according to an embodiment of the present utility model;

fig. 4 is a cross-sectional view of the protective tact switch provided in fig. 1 along the A-A direction.

Reference numerals

100-protection type tact switch; 1-a base; 11-lumen; 111-a baffle; 112-a first layer at the bottom of the lumen; 113-a second layer at the bottom of the lumen; 1131-a support block; 12-a first conductive sheet; 121-a first contact block; 13-a second conductive sheet; 131-a second contact block; 14-a first clamping piece; 15-a second clamping piece; 16-a first clamping block; 17-a second clamping block; 2-cover plate; 21-elastic buckle; 211-elastic buckle body; 212, buckling feet; 3-buttons; 31-a flat plate portion; 32-a first pressing protrusion; 33 second pressing projections; 4-dustproof film; 5-discoid reed; 51-an annular peripheral portion; 52-a circular center portion.

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 a protective tact switch 100. As shown in fig. 1 and 2, the protective tact switch 100 includes: a base 1, a cover plate 2 which is buckled with the base 1, and a button 3 which is arranged between the cover plate 2 and the base 1. Wherein the base 1 has an inner cavity 11.

Further, as shown in fig. 1 and 2, the protection type tact switch 100 further includes: the dustproof film 4 and the disc-shaped reed 5 with the center arched upwards are arranged in the inner cavity 11 of the base 1 from top to bottom in sequence.

As shown in fig. 1 and 2, each of the component base 1, the cover plate 2, the button 3, the dust-proof film 4, and the disk-shaped reed 5 is an independent integral structure, and they may be assembled together to form an integral structure.

Specifically, as shown in fig. 3 and 4, the middle part of the inner wall of the inner cavity 11 of the base 1 protrudes radially inwards to form a baffle 111, the dustproof film 4 is fixedly attached to the upper end surface of the baffle 111, and the peripheral edge of the disc-shaped reed 5 is embedded below the baffle 111.

With continued reference to fig. 3 and 4, the bottom of the cavity 11 has a first conductive sheet 12 and a second conductive sheet 13 at the center and the periphery thereof, and the center and the periphery of the disc-shaped reed 5 are disposed corresponding to the first conductive sheet 12 and the second conductive sheet 13, respectively.

With continued reference to fig. 1, 2, 3 and 4, when the button 3 applies downward pressure to the disk-shaped reed 5 under the action of external pressure, the disk-shaped reed 5 deforms downward, and the center and the periphery of the disk-shaped reed 5 are respectively in contact with the first conductive sheet 12 and the second conductive sheet 13, so that the electric circuit between the first conductive sheet 12 and the second conductive sheet 13 is conducted.

It should be noted that, first, as shown in fig. 2, 3 and 4, the disk-shaped reed 5 is disposed at the bottom in the base 1, and the periphery of the disk-shaped reed 5 abuts against the bottom in the base 1, i.e., the periphery of the disk-shaped reed 5 supports the center of the disk-shaped reed 5 such that the center of the disk-shaped reed 5 is not in contact with the bottom in the base 1 when no external pressure is applied to the disk-shaped reed 5. That is, when no external pressure is applied to the disk-shaped reed 5, the center of the disk-shaped reed 5 is not in contact with the first conductive sheet 12; as regards the perimeter of the disk-shaped reed 5, in some embodiments it may be in contact with the second conductive sheet 13, in such embodiments the second conductive sheet 13 also acts as a support for the disk-shaped reed 5; in other embodiments, a supporting point may be provided instead of being in contact with the second conductive sheet 13, for example, as shown in fig. 3 and 4, and in some embodiments below, a supporting block 1131 for supporting is provided exclusively for the disc-shaped reed 5. The embodiment provided by the utility model is exemplified by taking the example that the periphery of the disc-shaped reed 5 is not contacted with the second conductive sheet 13 and the supporting point is additionally arranged.

Second, as shown in fig. 2, 3 and 4, when a downward pressure is applied, the disk-shaped reed 5 is deformed downward, and the center and the periphery of the disk-shaped reed 5 are respectively in contact with the first conductive sheet 12 and the second conductive sheet 13, thereby conducting a circuit between the first conductive sheet 12 and the second conductive sheet 13. When the downward pressure applied to the disk-shaped reed 5 is released, the disk-shaped reed 5 is reset by the self-elasticity, that is, the center of the disk-shaped reed 5 is arched upwards again, so that at least the center of the disk-shaped reed 5 is not contacted with the first conducting strip 12 any more, and the circuit between the first conducting strip 12 and the second conducting strip 13 is disconnected.

Based on this, as shown in fig. 1, 2, 3 and 4, when the electric circuit needs to be conducted, only downward pressure is applied to the button 3 to conduct the electric circuit between the first conductive sheet 12 and the second conductive sheet 13. When the circuit is required to be broken, the pressure applied to the button 3 is released, so that the circuit between the first conductive sheet 12 and the second conductive sheet 13 is broken.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the protective tact switch 100 provided by the utility model comprises a base 1, a cover plate 2, a button 3, a dustproof film 4 and a disc-shaped reed 5, wherein the middle part of the inner wall of an inner cavity 11 of the base 1 is radially inwards protruded to form a baffle 111, the dustproof film 4 is fixedly attached to the upper end surface of the baffle 111, and the peripheral edges of the disc-shaped reed 5 are embedded below the baffle 111, so that the dustproof film 4 and the inner wall of the inner cavity 11 of the base 1 are enclosed to form a closed space, and the disc-shaped reed 5, a first conducting sheet 12 and a second conducting sheet 13 are positioned in the closed space, so that the conducting structure of the protective tact switch 100 can isolate moisture or dust in air in the use process, and the waterproof and dustproof effects can be achieved, and the service life and safety of the protective tact switch 100 can not be effectively ensured.

In some embodiments, as shown in fig. 2, in order to ensure effective elasticity, the number of disc-shaped reeds 5 of the protective tact switch 100 is two, and the two reeds 2 are overlapped.

In some embodiments, as shown in fig. 2, the dustproof film 4 is made of polyimide.

In some embodiments, as shown in fig. 1, 2, 3 and 4, the bottom portion of the inner cavity 11 is provided in two layers, including a first layer 112 and a second layer 113 located at the center and periphery of the bottom portion of the inner cavity 11, respectively, and the second layer 113 is slightly higher than the first layer 112; the first conductive sheet 12 and the second conductive sheet 13 are disposed on the first layer 112 and the second layer 113, respectively. This causes the first conductive sheet 12 and the second conductive sheet 13 to be disposed apart from each other so as to block the electrical contact therebetween. In addition, even if water vapor enters the inner cavity 11 of the base 1, because the first conductive sheet 12 and the second conductive sheet 13 are respectively arranged on different layers, short circuit between the first conductive sheet 12 and the second conductive sheet 13 is avoided to a certain extent, so that good functional action of the protective tact switch 100 is better ensured.

Specifically, in some embodiments, as shown in fig. 3, the first conductive sheet 12 and the second conductive sheet 13 are integrally formed with the base 1. Adopt integrated into one piece for first electric conductor 11 and second electric conductor 12 are fixed more stably in the bottom of inner chamber 11, and direct embedding is to the bottom of inner chamber 11, thereby form fixedly, also can not take place to drop.

In some embodiments, as shown in fig. 3, the first layer 112 and the second layer 113 are provided in a circular shape and a ring shape, respectively, and the first conductive sheet 12 and the second conductive sheet 13 are provided in a circular shape and a ring shape, respectively, which are adapted to the first layer 112 and the second layer 113. This allows the first 12 and second 13 conductive strips to be more structurally adapted to the disk-shaped reed 5.

In some embodiments, as shown in fig. 3 and 4, the first and second conductive sheets 12 and 13 are provided with first and second contact blocks 121 and 131, respectively; the second layer 113 is further provided with a support block 1131 for supporting the disk-shaped reed 5; the second contact block 131 is slightly higher than the first contact block 121, and the supporting block 1131 is slightly higher than the second contact block 131; the disk-shaped reed 5 is provided on the support block 1131. Therefore, when no external pressure acts on the disc-shaped reed 5, the disc-shaped reed 5 is not contacted with the second contact block 131 under the support of the support block 1131, so that the disc-shaped reed 5 cannot damage the second contact block 131 even if the button 3 is frequently pressed, and the service life of the protective tact switch 100 cannot be effectively guaranteed.

In some embodiments, as shown in fig. 3, the first contact block 121 and the second contact block 131 are provided in a circular shape and a fan shape, respectively. In this way, the first contact block 121 and the second contact block 131 are more matched with the disc-shaped reed 5 in structure, so that the center and the periphery of the disc-shaped reed 5 are more reliably in electric contact with the first contact block 121 and the second contact block 131 respectively, and the protective tact switch 100 provided by the utility model is further ensured to be good in electric contact.

Further, in some embodiments, as shown in fig. 2, 3 and 4, in particular, the disk-shaped reed 5 includes an annular peripheral edge portion 51 whose inner edge is upwardly arched, and a circular central portion 52 provided in the annular shape of the annular peripheral edge portion 51 and whose center is upwardly arched; the outer edge of the annular peripheral edge portion 51 is provided on the support block 1131, and the circular central portion 52 and the annular peripheral edge portion 51 are provided corresponding to the first contact block 121 and the second contact block 131, respectively; when the disk-shaped reed 5 is deformed downward by a downward pressure, the circular center portion 51 and the annular peripheral portion 52 are respectively in contact with the first contact block 121 and the second contact block 131 to conduct a circuit between the first conductive sheet 12 and the second conductive sheet 13. The disc-shaped reed 5 provided in this embodiment is simple in structure and easy to process.

In some embodiments, as shown in fig. 1 and 3, the protective tact switch 100 further includes a first clamping member 14 and a second clamping member 15 disposed at the bottom of the base 1, wherein the upper ends of the first clamping member 14 and the second clamping member 15 extend into the inner cavity 11 of the base 1 to be electrically connected with the first conductive sheet 12 and the second conductive sheet 13, respectively, and the lower ends of the first clamping member 14 and the second clamping member 15 extend out of the outer shape of the base 1 to form pins. The first clamping piece 14 and the second clamping piece 15 are arranged to facilitate the protective tact switch 100 to be inserted on the PCB, so that the protective tact switch is not easy to fall off the PCB.

In some embodiments, as shown in fig. 1, 2 and 4, the button 3 includes a flat plate portion 31, and first and second pressing protrusions 32 and 33 disposed on upper and lower sides of the flat plate portion 31, respectively, the first pressing protrusion 32 being formed in a cylindrical structure, and the second pressing protrusion 33 being formed in a circular truncated cone structure; wherein, the first pressing protrusion 32 passes through the cover plate 2 and extends out of the cover plate 2, the second pressing protrusion 33 extends into the inner cavity 11 of the base 1 and contacts with the dustproof film 4, and the flat plate portion 31 of the button 3 is limited between the cover plate 2 and the base 1. In this way, the pressure applied by the first pressing protrusion 32 is transferred to the second pressing protrusion 33, and the second pressing protrusion 33 acts on the center of the disc-shaped reed 5, but does not act on other parts outside the center, so that the disc-shaped reed 5 can be deformed downwards under the action of external force to a certain extent.

In some embodiments, as shown in fig. 1 and 2, an elastic buckle 21 is provided on the cover plate 2, and the elastic buckle 21 includes a body 211 and a buckle leg 212 provided at a lower end of the body 211; the base 1 is provided with a first clamping block 16 at a position corresponding to the buckling pin 212; the buckling pin 212 is correspondingly clamped with the first clamping block 16; a second clamping block 17 is arranged between the two first clamping blocks 16, and a body 211 of the elastic buckle 21 is limited between the first clamping blocks 16 and the second clamping blocks 17. Therefore, when the cover plate 2 and the base 1 are assembled, the cover plate 2 and the base 1 are only required to be aligned, then the cover plate 2 and the base 1 are pressed downwards to enable the buckling feet 212 to be correspondingly clamped with the first clamping blocks 16, the body 211 of the elastic buckle 21 is limited between the first clamping blocks 16 and the second clamping blocks 17, the assembly between the cover plate 2 and the base 1 can be completed, the operation is simple, the time consumption is short, and the assembly efficiency of the protective type tact switch 100 is greatly improved.

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 (10)

1. A protective tact switch, comprising: the device comprises a base, a cover plate buckled with the base, and a button arranged between the cover plate and the base; wherein the base has an inner cavity;

the protection type tact switch further comprises: the dustproof film is fixedly attached to the upper end surface of the baffle table, and the peripheral edges of the disc-shaped reed are embedded below the baffle table;

the center and the periphery of the bottom of the inner cavity are respectively provided with a first conductive sheet and a second conductive sheet, and the center and the periphery of the disc-shaped reed are respectively arranged corresponding to the first conductive sheet and the second conductive sheet;

when the button applies downward pressure to the disc-shaped reed under the action of external pressure, the disc-shaped reed deforms downwards, and the center and the periphery of the disc-shaped reed are respectively contacted with the first conductive sheet and the second conductive sheet so as to conduct a circuit between the first conductive sheet and the second conductive sheet.

2. The protective tact switch according to claim 1, wherein the dustproof film is made of polyimide.

3. The protective tact switch of claim 1, wherein the bottom portion of the inner cavity is provided in two layers, including a first layer and a second layer respectively positioned at the center and the periphery of the bottom portion of the inner cavity, and the second layer is slightly higher than the first layer;

the first conductive sheet and the second conductive sheet are disposed on the first layer and the second layer, respectively.

4. The protective tact switch of claim 3, wherein the first layer and the second layer are respectively configured in a circular shape and a ring shape, and the first conductive sheet and the second conductive sheet are respectively configured in a circular shape and a ring shape that are compatible with the first layer and the second layer.

5. The protective tact switch of claim 4, wherein the first and second conductive sheets are provided with first and second contact blocks, respectively; the second layer is also provided with a supporting block for supporting the disc-shaped reed; the second contact block is slightly higher than the first contact block, and the supporting block is slightly higher than the second contact block; the disc-shaped reed is arranged on the supporting block.

6. The protective tact switch of claim 5, wherein the first contact block and the second contact block are respectively arranged in a circular shape and a sector-ring shape.

7. The protective tact switch of claim 6, wherein the disk-like reed comprises an annular peripheral portion with an inner edge upwardly arched, and a circular central portion disposed within the annular interior 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 block, and the round central part and the annular peripheral edge part are respectively arranged corresponding to the first contact block and the second contact block; when the reed is deformed downward by a downward pressure, the circular center portion and the annular peripheral portion are respectively in contact with the first contact block and the second contact block to conduct a circuit between the first conductive sheet and the second conductive sheet.

8. The protective tact switch according to claim 7, further comprising a first clamping member and a second clamping member disposed at the bottom of the base, wherein the upper ends of the first clamping member and the second clamping member extend into the base and are electrically connected with the first conductive sheet and the second conductive sheet, respectively, and the lower ends of the first clamping member and the second clamping member extend out of the base to form pins.

9. The protective tact switch according to any one of claims 1 to 8, wherein the button comprises a flat plate portion, and first pressing protrusions and second pressing protrusions respectively provided on upper and lower sides of the flat plate portion, the first pressing protrusions being in a cylindrical structure, the second pressing protrusions being in a circular truncated cone structure;

the first pressing protrusion penetrates through the cover plate to extend out of the cover plate, the second pressing protrusion extends into the inner cavity of the base and contacts with the dustproof film, and the flat plate portion of the button is limited between the cover plate and the base.

10. The protective tact switch according to claim 9, wherein an elastic buckle is provided on the cover plate, the elastic buckle comprising a body and a buckle leg provided at a lower end of the body; a first clamping block is arranged on the base corresponding to the buckling pin; the buckling pin is correspondingly clamped with the first clamping block; a second clamping block is arranged between the two first clamping blocks, and the body of the elastic buckle is limited between the first clamping blocks and the second clamping blocks.