CN220963102U

CN220963102U - Light touch switch

Info

Publication number: CN220963102U
Application number: CN202322474120.2U
Authority: CN
Inventors: 颜群
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-05-14
Anticipated expiration: 2033-09-12

Abstract

The utility model relates to a tact switch, which comprises a base, a first terminal and a cover plate. The base is provided with a containing cavity with an opening at one end, the base comprises a first side surface adjacent to the side surface where the opening is positioned, and the first side surface is used for being matched with the printed circuit board; the first terminal is arranged on the base, part of the first terminal is arranged in the accommodating cavity, one end of the first terminal is exposed from the first side surface, and the first terminal is electrically connected with the printed circuit board; the cover plate is detachably connected with the base, the cover plate comprises a cover plate body and a first turnover part which are connected with each other and are arranged at an angle, the base is arranged on the cover plate body in a covering mode, and the first turnover part can cover a gap between the base and the cover plate body, wherein the gap is located on the first side face. Through setting up the first folded part that is connected with the apron body and is the angle setting with the apron body to shelter from the gap that is located on the first side between base and the apron body, thereby can reduce the risk of deposit scaling powder on the first terminal.

Description

Light touch switch

Technical Field

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

Background

The tact switch comprises a base, a button, a cover plate, a conductive component and an elastic sheet. The conductive component is arranged in the cavity of the base, one end of the button penetrates through the hole in the cover plate to be arranged in the cavity of the base, the elastic sheet is arranged between the conductive component and the button, and after the button is pressed to enable the button to be abutted to the elastic sheet and deform the elastic sheet, paralysis is enabled to be connected with the conductive component, so that the communication between the positive terminal and the negative terminal in the tact switch is realized.

Normally, one end of a conductive component of the tact switch, which is located outside a base, is welded and fixed with a PCB, soldering flux is sprayed upwards from the bottom of the PCB when the tact switch is welded in wave soldering, the soldering flux can be sprayed upwards to the base in a PCB hole corresponding to pins and terminal pins on two sides of a cover plate, and permeates into a cavity of the base from a gap between the cover plate and the base, the soldering flux is easily covered on a terminal in the base after being vaporized in high-temperature welding, and the risk that the tact switch fails due to the fact that the terminal is conducted with an internal elastic piece is blocked.

Disclosure of utility model

Accordingly, it is necessary to provide a tact switch for solving the technical problem that the solder resist is easy to enter the gap between the cover plate and the base in the tact switch in the related art.

A tact switch, the tact switch comprising:

A base configured with a receiving cavity having an opening at one end, the base including a first side adjacent to a side where the opening is located, the first side for mating with a printed circuit board;

The first terminal is arranged on the base, part of the first terminal is arranged in the accommodating cavity, one end of the first terminal is exposed out of the first side surface, and the first terminal is electrically connected with the printed circuit board;

The cover plate comprises a cover plate body and a first turnover part which are connected with each other and are arranged at an angle, the cover plate body covers the base, and the first turnover part can shield a gap between the base and the cover plate body, wherein the gap is located on the first side face.

In one embodiment, an end of the first fold away from the cover body extends up to the first terminal, so that the first terminal is exposed to the outside.

In one embodiment, the side surface of the first turnover part facing the base is attached to the first side surface.

In one embodiment, the base further comprises a second side surface disposed opposite to the first side surface, the second side surface being for mating with the printed circuit board;

The tact switch further comprises a shielding plate, the shielding plate is arranged on the second side face of the base, and the end face of one end, close to the opening, of the shielding plate protrudes out of the side face of the base where the opening is located so as to shield a gap between the cover plate body and the side face where the opening is located;

The other end of the first terminal sequentially penetrates through the side wall of the base and the shielding plate and is exposed out of the shielding plate.

In one embodiment, the thickness of the portion of the shielding plate protruding from the side face where the opening is located is not smaller than the thickness of the cover plate body.

In one embodiment, two ends of the shielding plate are bent relative to the middle part, and the bent two ends are respectively attached to the side surface, adjacent to the second side surface, of the base.

In one embodiment, the cover plate further includes second turnups respectively connected to opposite ends of the cover plate body, and the two second turnups and the cover plate body enclose an accommodating groove;

The base is accommodated in the accommodating groove, and the base is fixedly connected with the second turnover part through a buckle.

In one embodiment, each second turnover part is respectively provided with a first bulge protruding out of the side surface of the second turnover part;

second bulges are respectively arranged on two sides of the base, which are adjacent to the first side;

the first protrusion abuts against an end of the second protrusion facing away from the opening beyond the second protrusion.

In one embodiment, a plurality of mounting holes are formed in the base, close to one end of the cover plate body, at intervals, and fasteners penetrate through the cover plate body to be matched with the mounting holes.

In one embodiment, the tact switch further comprises:

The second terminal is arranged in the accommodating cavity;

A third terminal arranged in the accommodating cavity and spaced from the second terminal, and electrically connected with the first terminal;

The button is connected to the cover plate body and is partially positioned in the accommodating cavity, and the button can move relative to the cover plate body;

the elastic piece is arranged between the second terminal and the button;

The button moves towards the direction close to the elastic sheet relative to the cover plate body and applies pressing force to the elastic sheet, so that the elastic sheet is deformed and then is contacted with the second terminal and the third terminal, and conduction between the first terminal and the second terminal is realized.

The utility model has the beneficial effects that:

The base is used for accommodating and mounting the structures such as the first terminal, the second terminal, the spring plate and the like, and is used for being fixed with the printed circuit board. The first terminal is used to make electrical connection of the second terminal to circuitry in the printed circuit board. The apron is used for sheltering from the opening that holds the cavity to the spare part that holds in the cavity protects. Through setting up with the apron body be connected and with the apron body be the first folded part that the angle set up to shelter from the gap that is located on the first side between base and the apron body, thereby make when welding base and printed circuit board, when spouting the scaling powder from printed circuit board towards first side, because the shielding of first folded part, the scaling powder can not follow in the gap between base and the apron body get into and hold the cavity, thereby can reduce the risk of deposit scaling powder on the first terminal. By the arrangement, flux can be prevented from entering the tact switch, so that the risk of failure of the tact switch is reduced.

Drawings

FIG. 1 is a schematic diagram of a touch switch according to an embodiment of the present utility model at a first side view;

FIG. 2 is a cross-sectional view of a tact switch according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a tact switch according to an embodiment of the present utility model under a view angle of a shielding plate;

FIG. 4 is a schematic diagram of a tact switch according to an embodiment of the present utility model when a cover is not installed;

FIG. 5 is a schematic view of a touch switch according to an embodiment of the present utility model under a first side view when a cover is not installed;

FIG. 6 is a schematic diagram of a cover plate of a tact switch according to an embodiment of the utility model;

fig. 7 is a schematic structural diagram of a base in a tact switch according to an embodiment of the utility model.

Reference numerals:

A base 100; a first side 110; a second protrusion 120; an opening 130; a first terminal 200; a cover plate 300; a cover body 310; a first fold 320; a second fold 330; a first protrusion 331; a shielding plate 400; a second terminal 500; a spring 600; a button 700; a fastener 800; and a third terminal 900.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an embodiment of the present utility model provides a tact switch including a base 100, a first terminal 200, and a cover 300. The base 100 is configured with a receiving cavity having an opening 130 at one end, the base 100 including a first side 110 adjacent to the side where the opening 130 is located, the first side 110 for mating with a printed circuit board; the first terminal 200 is disposed on the base 100, a portion of the first terminal 200 is disposed in the accommodating cavity, one end of the first terminal 200 is exposed from the first side 110, and the first terminal 200 is electrically connected to the printed circuit board; the cover plate 300 is detachably connected with the base 100, the cover plate 300 comprises a cover plate body 310 and a first turnover part 320 which are mutually connected and are arranged at an angle, the cover plate body 310 is covered on the base 100, and the first turnover part 320 can shade a gap between the base 100 and the cover plate body 310, which is positioned on the first side 110.

The base 100 is used for accommodating and mounting the first terminal 200, the second terminal 500, the third terminal 900, the spring 600 and other structures, and is used for being fixed with a printed circuit board. The first terminal 200 is used to make electrical connection of the second terminal 500 to circuitry in a printed circuit board. The cover plate 300 is used for shielding the opening 130 of the accommodating cavity to protect the components in the accommodating cavity. The first turnover part 320 connected with the cover plate body 310 and arranged at an angle with the cover plate body 310 is arranged to shield a gap between the base 100 and the cover plate body 310 on the first side 110. So that when soldering the base 100 with the printed circuit board, the flux cannot enter the accommodating cavity from the gap between the base 100 and the cover plate body 310 when soldering the base 100 with the printed circuit board due to the shielding of the first turnover part 320 when spraying the flux from the printed circuit board toward the first side 110, thereby reducing the risk of depositing the flux on the first terminal 200. By the arrangement, flux can be prevented from entering the tact switch, so that the risk of failure of the tact switch is reduced.

Specifically, in the present embodiment, the base 100 is configured to have a substantially rectangular parallelepiped or square structure. The cover body 310 has substantially the same shape as the side surface of the base 100 having the opening 130 formed therein, so that the cover body 310 can cover the opening 130 of the base 100. The cover body 310 and the first turnover part 320 may be integrally formed, for example, injection-molded, or may be a sheet metal part formed by cold deformation. As a preferred embodiment, the first turnover part 320 is perpendicular to the cover body 310, so that the first turnover part 320 can better cover the gap between the cover body 310 and the base 100.

As shown in fig. 2 and 7, in one embodiment, the tact switch further includes a second terminal 500, a third terminal 900, a button 700, and a spring 600, where the second terminal 500 is disposed in the accommodating cavity; the third terminal 900 is disposed in the accommodating cavity and spaced apart from the second terminal 500, and the third terminal 900 is electrically connected to the first terminal 200; the button 700 is connected to the cover body 310 and is partially located in the accommodating cavity, and the button 700 can move relative to the cover body 310; the spring 600 is arranged between the second terminal 500 and the button 700; the button 700 moves towards the direction approaching the spring 600 relative to the cover body 310 and applies a pressing force to the spring 600, so that the spring 600 is deformed and then contacts the second terminal 500 and the third terminal 900, thereby realizing the conduction between the first terminal 200 and the second terminal 500.

By disposing the second terminal 500 and the third terminal 900 in the accommodating cavity, the second terminal 500 is disposed adjacent to the third terminal 900, and when the button 700 is pressed, the button 700 applies a force on the spring 600, so that the spring 600 is deformed, and the spring 600 contacts the second terminal 500 and the third terminal 900 at the same time, so that the second terminal 500 and the third terminal 900 are electrically connected through the spring 600. Further, since the third terminal 900 is electrically connected to the first terminal 200, the second terminal 500, and the third terminal 900 are electrically connected through the spring 600. When the button 700 is pressed again, the button 700 moves in a direction away from the elastic piece 600 and the force pressing on the elastic piece 600 is removed, so that the elastic piece 600 is restored to be elastically deformed to be spaced apart from the second terminal 500 and the third terminal 900, thereby disconnecting the second terminal 500 and the third terminal 900. The first terminal 200, the second terminal 500, the third terminal 900, and the spring 600 are all conductive.

As shown in fig. 1, in one embodiment, an end of the first turnover portion 320 facing away from the cover body 310 extends up to the first terminal 200, so that the first terminal 200 is exposed to the outside. The arrangement is such that the first terminal 200 is not shielded by the first turnover 320, thereby enabling the first terminal 200 to be electrically connected with the wiring on the printed circuit board. Not only can prevent that scaling powder from getting into the holding cavity of base 100, can also make the structure simpler, it is more convenient to install. Further, the side of the first turnover portion 320 facing the base 100 is attached to the first side 110. This arrangement allows the gap between the first fold 320 and the first side 110 to be relatively small, thereby preventing flux from entering the interior of the base 100 from the gap between the first fold 320 and the first side 110.

As shown in fig. 3 to 5, in one embodiment, the base 100 further includes a second side disposed opposite the first side 110, the second side being for mating with a printed circuit board; the tact switch further comprises a shielding plate 400, wherein the shielding plate 400 is arranged on the second side surface of the base 100, and the end surface of one end of the shielding plate 400, which is close to the opening 130, protrudes out of the side surface of the base 100, where the opening 130 is positioned, so as to shield a gap between the cover plate body 310 and the side surface where the opening 130 is positioned; the other end of the first terminal 200 sequentially passes through the side wall of the base 100 and the shielding plate 400, and is exposed to the shielding plate 400.

In the present embodiment, the shielding plate 400 is disposed on the second side of the base 100, and the end of the shielding plate 400 near the end of the opening 130 is configured to protrude from the side of the base 100, so as to shield the gap between the cover body 310 and the side of the base 100 where the opening 130 is located, thereby preventing the flux from entering the interior of the base 100.

It is understood that the shielding plate 400 and the base 100 may be configured independently, and the shielding plate 400 is fixedly connected to the second side of the base 100. As a preferred embodiment, the shielding plate 400 and the base 100 are integrally formed, and may be obtained by injection molding.

In one embodiment, the thickness of the portion of the shielding plate 400 protruding from the side surface of the opening 130 is not smaller than the thickness of the cover plate body 310. The arrangement is such that the shielding plate 400 can completely shield the cover plate body 310 in the plane where the second side surface is located, so that the shielding plate 400 can better prevent the soldering flux from entering the accommodating cavity of the base 100.

As shown in fig. 3 to 5, in one embodiment, two ends of the shielding plate 400 are bent relative to the middle portion, and the two bent ends are respectively attached to the side surface of the base 100 adjacent to the second side surface. Specifically, the shielding plate 400 is configured in a U-like structure, and is disposed such that both ends of the shielding plate 400 can protrude in a direction away from the second side surface, thereby shielding a portion of a gap between the cover plate body 310 and a side surface of the base 100 adjacent to the second side surface, to further prevent flux from entering the cavity of the base 100. It should be noted that, the two ends of the shielding plate 400 are only attached to a portion of the side surface of the base 100 adjacent to the second side surface, so that a corresponding space is reserved for the cooperation of other structures and the base 100.

As shown in fig. 3, 5 and 6, in one embodiment, the cover 300 further includes second turnups 330 respectively connected to opposite ends of the cover body 310, and the two second turnups 330 and the cover body 310 enclose a receiving groove; the base 100 is accommodated in the accommodating groove, and the base 100 is fixedly connected with the second turnover part 330 through a buckle. So arranged as to enable a removable connection of the cover plate 300 with the base 100.

As shown in fig. 3, 5 and 6, specifically, each second turnup 330 is provided with a first protrusion 331 protruding from a side surface of the second turnup 330; second protrusions 120 are respectively disposed on two sides of the base 100 adjacent to the first side 110; the first protrusion 331 abuts against an end of the second protrusion 120 facing away from the opening 130 beyond the second protrusion 120. So configured, the first protrusion 331 and the second protrusion 120 abut against each other to achieve mutual limitation, so as to achieve relative fixation between the second turndown 330 and the base 100.

As shown in fig. 5 and 6, further, the end of the first protrusion 331 facing away from the cover plate body 310 is configured to be inclined, and the end of the second protrusion 120 facing the opening 130 is configured to be inclined, so that the inclined surfaces on the first protrusion 331 and the second protrusion 120 can guide and avoid each other when the first protrusion 331 passes over the second protrusion 120, thereby saving more effort when the second turnover part 330 is connected with the base 100.

As shown in fig. 3, 5 and 6, in one embodiment, a plurality of mounting holes are formed in the base 100 near one end of the cover body 310, and the fastener 800 passes through the cover body 310 to be matched with the mounting holes. By this arrangement, the cover plate 300 can be further fixed to the base 100, thereby improving the stability of the tact switch.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A tact switch, the tact switch comprising:

The first terminal is arranged on the base, one end of the first terminal is exposed out of the first side surface, and the first terminal is electrically connected with the printed circuit board;

2. The tact switch of claim 1, wherein an end of the first turnover portion facing away from the cover body extends up to the first terminal so that the first terminal is exposed to the outside.

3. The tact switch of claim 1, wherein a side of the first turnover facing the base is in contact with the first side.

4. The tact switch of claim 1, wherein the base further comprises a second side disposed opposite the first side, the second side for mating with the printed circuit board;

5. The tact switch according to claim 4, wherein a thickness of a portion of the shielding plate protruding from a side surface where the opening is located is not smaller than a thickness of the cover plate body.

6. The tact switch of claim 4, wherein the two ends of the shield are bent relative to the middle portion, and wherein the bent ends are respectively attached to the sides of the base adjacent to the second side.

7. The tact switch according to any one of claims 1-6, wherein the cover further comprises second turndown parts respectively connected to opposite ends of the cover body, and wherein the two second turndown parts and the cover body enclose a receiving groove;

8. The tact switch according to claim 7, wherein each of the second turnover parts is provided with a first protrusion protruding from a side surface of the second turnover part, respectively;

9. The tact switch of claim 7, wherein the base has a plurality of spaced mounting holes formed in an end thereof adjacent the cover body, and wherein fasteners extend through the cover body to engage the mounting holes.

10. The tact switch according to any of claims 1-6, further comprising:

The second terminal is arranged in the accommodating cavity;

the elastic piece is arranged between the second terminal and the button;

Wherein the button moves towards the direction approaching the elastic sheet relative to the cover plate body and applies pressing

Force is exerted on the elastic sheet so as to enable the elastic sheet to be contacted with the second terminal and the third terminal after being deformed,

To effect conduction of the first and second terminals.