CN212990965U

CN212990965U - Micro switch

Info

Publication number: CN212990965U
Application number: CN202021376074.2U
Authority: CN
Inventors: 程先金; 刘勇刚
Original assignee: Huizhou Fulilai Electronic Co ltd
Current assignee: Huizhou Fulilai Electronic Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-04-16
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to the technical field of switches, concretely relates to micro-gap switch, the on-line screen storage device comprises a base, set up the epitheca on the base, set up first quiet terminal on the base, the quiet terminal of second, move the terminal, with the trigger shell fragment that moves terminal electric connection, the upper end of the quiet terminal of second is buckled towards first quiet terminal, the tip that the terminal was kept away from to the trigger shell fragment extends to between the tip of the quiet terminal of first quiet terminal and the tip of the quiet terminal of second, one side that triggers the shell fragment tip and move first quiet terminal towards first is provided with first contact, first quiet terminal is provided with the second contact with the position that first contact corresponds, and first contact and second contact are the gold contact. The utility model discloses in, all set up solitary contact on triggering shell fragment and quiet terminal, and the material of contact has all adopted gold, has avoided the circuit failure problem that leads to because of the plating layer is worn and torn, has stopped the condition of switch failure, when having improved life greatly, has also very high the rated load of product.

Description

Micro switch

Technical Field

The utility model relates to the technical field of switches, concretely relates to micro-gap switch.

Background

A switch is an electronic component that can open a circuit, interrupt current, or cause current to flow to other circuits. The microswitch is a kind of switch, it has a small contact interval and a quick-action mechanism, a contact mechanism which uses a specified stroke and a specified force to make switch action, and a switch which is covered by an upper shell and has a driving piece outside. Microswitches are widely used in many aspects of life, such as in mouse buttons and industrial product circuit control, to control the on and off states of a circuit. At present, the static contact of the micro switch is covered on the surface of a contact area by using an alloy copper substrate electroplating conductive layer, but the conductive layer of the contact area after electroplating is designed to be very thin, so that the passive contact is broken quickly, the actual load service life of a product is short, the rated load is small, and in addition, the design mode easily causes poor contact after the passive contact of the electroplating layer is broken, and the circuit of switch control is failed in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a micro-gap switch.

The utility model discloses a following scheme realizes:

a microswitch comprises a base, an upper shell arranged on the base, a first static terminal, a second static terminal and a movable terminal which are arranged on the base, wherein the first static terminal, the second static terminal and the movable terminal extend to the position below the bottom surface of the base; one side of the end part of the trigger elastic sheet facing the first static terminal is provided with a first contact, the first static terminal and the position corresponding to the first contact are provided with a second contact, and the first contact and the second contact are gold contacts.

Furthermore, a third contact is arranged on one side, facing the second static terminal, of the end portion of the trigger elastic sheet, a fourth contact is arranged at a position, corresponding to the third contact, of the second static terminal, and the third contact and the fourth contact are both gold contacts.

Further, the third contact is fixed on the trigger spring piece through welding or riveting, and the fourth contact is fixed on the second fixed terminal through welding or riveting.

Furthermore, the base is provided with a plurality of through holes penetrating through end faces on two sides of the base in the width direction.

Further, the first contact is fixed on the trigger spring piece through welding or riveting, and the second contact is fixed on the first fixed terminal through welding or riveting.

Furthermore, the upper shell is provided with a pressing piece used for pushing the trigger elastic piece, and the upper end of the pressing piece extends out of the top surface of the upper shell.

Furthermore, the movable terminal is provided with a connecting part for connecting the trigger spring plate, and a limiting part is arranged on the inner side of the top of the upper shell and at a position corresponding to the connecting part.

Furthermore, the both sides of epitheca length direction are provided with the joint hole that is used for connecting the base, the base with the position that the joint hole corresponds be provided with the joint portion that the connecting hole corresponds.

Contrast prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, all set up solitary contact on triggering shell fragment and quiet terminal, and the material of contact has all adopted gold, and the contrast adopts the traditional mode of plating layer, has avoided the circuit failure problem that leads to because of the plating layer is worn and torn, has stopped the condition of switch inefficacy, when having improved life greatly, has also very high the rated load of product.

Drawings

Fig. 1 is an exploded view of an embodiment 1 of a micro switch provided by the present invention.

FIG. 2 is an assembly view of embodiment 1.

Fig. 3 is a schematic structural diagram of the upper case of the present invention.

Fig. 4 is an exploded view of example 2.

FIG. 5 is an assembly view of embodiment 2.

The figure includes:

the contact device comprises a base 1, a clamping portion 11, a through hole 12, an upper shell 2, a pressing piece 21, a limiting portion 22, a clamping hole 23, a first fixed terminal 3, a second contact 31, a second fixed terminal 4, a fourth contact 41, a movable terminal 5, a connecting portion 51, a trigger elastic sheet 6, a first contact 61 and a third contact 62.

Detailed Description

To facilitate understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

Example 1

Referring to fig. 1 to 3, the utility model provides a pair of micro-gap switch, including base 1, set up epitheca 2 on base 1, set up first quiet terminal 3, the quiet terminal 4 of second on base 1 to and move terminal 5, and first quiet terminal 3, the quiet terminal 4 of second, and move terminal 5 and all extend to below the base 1 bottom surface, micro-gap switch still include one with move terminal 5 electric connection's trigger shell fragment 6, the upper end of the quiet terminal 4 of second is buckled towards first quiet terminal 3, trigger shell fragment 6 and keep away from the tip that moves terminal 5 and extend to between the tip of the quiet terminal 4 of first quiet terminal 3 and second, when pressing trigger shell fragment 6, trigger shell fragment 6 with the quiet terminal 3 electric connection of first.

One side of the end part of the trigger elastic sheet 6 facing the first fixed terminal 3 is provided with a first contact 61, the position of the first fixed terminal 3 corresponding to the first contact 61 is provided with a second contact 31, and the first contact 61 and the second contact 31 are gold contacts. The first contact 61 and the second contact 31 are arranged, the problem that a silver layer is easily abraded in the traditional silver plating mode can be solved, the first contact 61 and the second contact 31 are made of gold, the service life can be prolonged, and the integral rated load is also improved.

The first contact 61 is fixed on the trigger spring 6 by welding or riveting, and the second contact 31 is fixed on the first fixed terminal 3 by welding or riveting. The contact adopts the mode of welding or riveting, compares traditional electroplating, and the contact can be thicker, avoids wearing and tearing.

The upper shell 2 is provided with a pressing piece 21 for pushing the trigger spring plate 6, and the upper end of the pressing piece 21 extends out of the top surface of the upper shell 2. The pressing piece 21 is limited in the upper shell 2, when the pressing key is pressed, the triggering elastic sheet 6 is elastically deformed, the first contact 61 is contacted with the second contact 31, and the movable terminal 5 and the first fixed terminal 3 are conducted. When the key is released, the first contact 61 and the second contact 31 are separated, and the movable terminal 5 and the first stationary terminal 3 are disconnected.

The movable terminal 5 is provided with a connecting part 51 for connecting the trigger spring plate 6, and a limiting part 22 is arranged at a position, corresponding to the connecting part 51, on the inner side of the top of the upper shell 2, so that the trigger spring plate 6 is connected to the connecting part 51, and then the situation of separation cannot occur in the pressing process.

The both sides of 2 length direction on the epitheca are provided with the joint hole 23 that is used for connecting base 1, base 1 and the position that joint hole 23 corresponds are provided with joint portion 11 that the connecting hole corresponds.

In the initial state, the trigger elastic sheet 6 may be located between the first fixed terminal 3 and the second fixed terminal 4, and may not contact with both of them, or the trigger elastic sheet 6 may only contact with the second fixed terminal 4.

Example 2

Referring to fig. 3 to 5, the utility model provides a pair of micro-gap switch, including base 1, set up epitheca 2 on base 1, set up first quiet terminal 3, the quiet terminal 4 of second on base 1 to and move terminal 5, and first quiet terminal 3, the quiet terminal 4 of second, and move terminal 5 and all extend to below the base 1 bottom surface, micro-gap switch still include one with move terminal 5 electric connection's trigger shell fragment 6, the upper end of the quiet terminal 4 of second is buckled towards first quiet terminal 3, trigger shell fragment 6 and keep away from the tip that moves terminal 5 and extend to between the tip of the quiet terminal 4 of first quiet terminal 3 and second, when pressing trigger shell fragment 6, trigger shell fragment 6 with the quiet terminal 3 electric connection of first.

A third contact 62 is arranged on one side of the end of the trigger spring plate 6 facing the second fixed terminal 4, a fourth contact 41 is arranged at the position of the second fixed terminal 4 corresponding to the third contact 62, and the third contact 62 and the fourth contact 41 are both gold contacts.

The third contact 62 is fixed on the trigger spring 6 by welding or riveting, and the fourth contact 41 is fixed on the second stationary terminal 4 by welding or riveting. The contact adopts the mode of welding or riveting, compares traditional electroplating, and the contact can be thicker, avoids wearing and tearing.

The base 1 is provided with a plurality of through holes 12 penetrating through end faces on two sides in the width direction, and the through holes 12 can reduce materials used in injection molding and can also be hole sites for connecting other parts under specific conditions.

The first contact 61 is fixed on the trigger spring 6 by welding or riveting, and the second contact 31 is fixed on the first fixed terminal 3 by welding or riveting.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.

Claims

1. A microswitch comprises a base, an upper shell arranged on the base, a first static terminal, a second static terminal and a movable terminal which are arranged on the base, wherein the first static terminal, the second static terminal and the movable terminal extend to the position below the bottom surface of the base; one side of the end part of the trigger elastic sheet facing the first static terminal is provided with a first contact, the first static terminal and the position corresponding to the first contact are provided with a second contact, and the first contact and the second contact are gold contacts.

2. The microswitch of claim 1, wherein a third contact is arranged on one side of the end part of the trigger elastic sheet facing the second fixed terminal, a fourth contact is arranged at a position of the second fixed terminal corresponding to the third contact, and the third contact and the fourth contact are both gold contacts.

3. The microswitch of claim 2, wherein the third contact is fixed to the trigger spring by welding or riveting, and the fourth contact is fixed to the second stationary terminal by welding or riveting.

4. The microswitch of claim 2, wherein the base is provided with a plurality of through holes penetrating through both widthwise end surfaces thereof.

5. The microswitch of claim 1, wherein the first contact is fixed to the trigger spring by welding or riveting, and the second contact is fixed to the first stationary terminal by welding or riveting.

6. The microswitch of claim 1, wherein the upper shell is provided with a pressing piece for pushing the trigger spring piece, and the upper end of the pressing piece extends out of the top surface of the upper shell.

7. The microswitch of claim 1, wherein the movable terminal is provided with a connecting part for connecting the trigger spring, and a position corresponding to the connecting part on the inner side of the top of the upper shell is provided with a limiting part.

8. The microswitch of claim 1, wherein clamping holes for connecting a base are arranged on two sides of the upper shell in the length direction, and clamping portions corresponding to the clamping holes are arranged at positions of the base corresponding to the clamping holes.