CN210073677U

CN210073677U - Micro switch

Info

Publication number: CN210073677U
Application number: CN201921106529.6U
Authority: CN
Inventors: 刘伟铖
Original assignee: Shanghai Feili Hoon Cheng Electric Technology Co Ltd
Current assignee: Shanghai Feili Hoon Cheng Electric Technology Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-02-14
Anticipated expiration: 2029-07-15

Abstract

An embodiment of the utility model provides a micro-gap switch, include: a housing; the two contact plates are arranged in the shell; a button assembly having a portion located within the housing; one end of each contact bridge is arranged in the two contact plates; and the elastic element is arranged at one end of the contact bridge, which is far away from the contact plate, and is connected with the button assembly. Connect between contact bridge and button assembly through the elastic component, the elastic component can exert the effort to the contact bridge, and the swing of restriction contact bridge under the vibrations environment reduces the condition that the contact bridge touched arbitrary contact plate because of the swing, has reduced the risk that takes place the mistake and touch. The part is reduced as far as possible under the prerequisite that the part current-carrying satisfies the switch and requires to the temperature rise, reduces the whole thickness of switch, and the distance between the contact plate is less, also can not take place the mistake and touch. The volume of the micro switch is small, the occupied space is small, and more micro switches can be placed in the working space.

Description

Micro switch

Technical Field

The utility model relates to an electrical apparatus switch, in particular to micro-gap switch.

Background

In some industrial control fields, the number of installed switches is relatively large, the environment vibration is large, a contact bridge in the switch is easy to vibrate under external acting force, and if the contact bridge touches a contact plate during vibration, the switch can be touched mistakenly, so that unexpected results are caused.

In the prior art, the size of the switch in the environment is relatively large, so that the distance between two contact plates is increased, the contact bridge is prevented from mistakenly contacting the contact plates during vibration, and the switch cannot be placed in a sufficient number of switches in a limited space due to the fact that the switch is large in size and large in occupied space.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a micro-gap switch possesses less volume and can use under the vibrations environment. In order to solve the above technical problem, an embodiment of the present invention provides a micro switch, including:

a housing;

the two contact plates are arranged in the shell;

a button assembly having a portion located within the housing;

one end of each contact bridge is arranged in the two contact plates;

and the elastic element is arranged at one end of the contact bridge, which is far away from the contact plate, and is connected with the button assembly.

The utility model discloses embodiment is connected between contact bridge and button subassembly through the elastic component for prior art, and the elastic component can exert the effort to the contact bridge, and the swing of restriction contact bridge under the vibrations environment avoids the improper switch-on or divides disconnected phenomenon of switch, takes place the improper switch-on or divides disconnected phenomenon of switch, has reduced the risk that takes place the mistake and touch. The acting force of the elastic piece on the contact bridge ensures that even if the volume of the microswitch is smaller, the distance between the contact plates is smaller, and the mistaken contact cannot occur. The volume of the micro switch is small, the occupied space is small, and more micro switches can be placed in the working space.

In addition, a containing groove is formed in the contact bridge, the containing groove penetrates through one side, facing the button assembly, of the contact bridge, and the elastic piece is installed in the containing groove and is connected with the button assembly and the contact plate respectively. The elastic piece is arranged in the accommodating groove, so that the contact bridge can be conveniently pulled, and meanwhile, the space is saved.

In addition, the button assembly includes:

the button is provided with a pressing end and a contact end opposite to the pressing end, the pressing end is positioned outside the shell, and the contact end is positioned in the shell;

the first supporting piece is abutted against the contact end of the button and used for rotating when the button is pressed, the elastic piece is connected with the first supporting piece, and the first supporting piece is used for driving the contact bridge to rotate through the elastic piece when rotating. When a user presses the pressing end of the button, the pressing end and the contact end of the button descend simultaneously to push the first supporting piece to rotate, and the first supporting piece pulls the contact bridge to swing through the elastic piece during rotation, so that the contact bridge is controlled to touch any one contact plate.

In addition, the micro switch further includes:

the second supporting piece is fixedly arranged in the shell, the second supporting piece is arranged between the button assembly and the contact bridge, and one end, close to the button assembly, of the contact bridge abuts against the second supporting piece. The second support member serves to define the position of the contact bridge and to support the contact bridge and serves as a pivot point of the contact bridge.

In addition, the contact bridge is provided with a mounting hole for mounting the elastic piece.

In addition, the micro switch further includes: and the magnetic steel is arranged between the two contact plates. The magnetic steel utilizes the magnetic quenching principle to elongate the electric arc to the direction outside the two contact plates so as to rapidly extinguish the electric arc. Whereby the switch can withstand larger load parameters.

In addition, the housing includes: the cover and the base are buckled with each other; the cover and the base are provided with parts protruding towards the magnetic steel to form positioning parts, and the two positioning parts clamp the magnetic steel. The magnetic steel is clamped by the positioning parts on the cover and the base to realize fixation.

In addition, a lever mounting port is formed in the shell, and the micro switch further comprises: and the lever is arranged in the lever mounting port and is abutted against the pressing end of the button. Different driving modes of different mechanisms are met, the lever can be replaced at will, and adjustment and driving are facilitated.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is an exploded view of a configuration microswitch in a first embodiment;

FIG. 2 is a schematic view of the microswitch in the first embodiment;

FIG. 3 is a schematic structural diagram of a magnetic steel according to the first embodiment;

FIG. 4 is a schematic view of a lever structure in the first embodiment;

FIG. 5 is a schematic diagram of a lever structure in a second embodiment;

FIG. 6 is a schematic diagram of a lever structure in a third embodiment;

fig. 7 is a schematic diagram of a lever structure in the fourth embodiment.

Wherein: 1. a button; 2. a housing; 3. a contact plate; 4. a contact bridge; 5. the elastic piece 6 is a first supporting piece; 7. a second support member; 8. magnetic steel; 9. a positioning part; 10. a lever.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

An embodiment of the utility model provides a micro-gap switch, as shown in fig. 1 and fig. 2, include:

a housing 2;

two contact plates 3 arranged in the shell 2;

a button 1 assembly having a portion located within a housing 2;

one end of the contact bridge 4 is arranged in the two contact plates 3;

and the elastic element 5 is arranged at one end of the contact bridge 4 far away from the contact plate 3 and is connected with the button 1 assembly.

In the present embodiment, the elastic member 5 is a tension spring, but the elastic member 5 may be another type of spring, and the present embodiment is only an example of a tension spring and is not particularly limited. Connect between contact bridge 4 and the 1 subassembly of button through elastic component 5, elastic component 5 can exert the effort to contact bridge 4, and restriction contact bridge 4 is in the swing under the vibrations environment, avoids contact bridge 4 to touch the condition of touching arbitrary contact plate 3 because of the swing, takes place the improper switch-on of switch or divides disconnected phenomenon, has reduced the risk that takes place the mistake and touch. The parts are reduced as much as possible on the premise that the current-carrying of the parts meets the requirement of the switch on temperature rise, so that the overall thickness of the switch is reduced. The volume of the micro switch is small, the occupied space is small, and more micro switches can be placed in the working space.

In addition, a containing groove is formed in the contact bridge 4, the containing groove penetrates through one side, facing the button 1 assembly, of the contact bridge 4, and the elastic piece 5 is installed in the containing groove and is connected with the button 1 assembly and the contact plate 3 respectively. The elastic piece 5 is arranged in the accommodating groove, so that the contact bridge 4 can be conveniently pulled, and meanwhile, the space is saved.

In addition, the button 1 assembly includes:

the button 1 is provided with a pressing end and a contact end opposite to the pressing end, the pressing end is positioned outside the shell 2, and the contact end is positioned in the shell 2;

the first supporting piece 6 is abutted to the contact end of the button 1 and used for rotating when the button 1 is pressed, the elastic piece 5 is connected with the first supporting piece 6, and the first supporting piece 6 is used for driving the contact bridge 4 to rotate through the elastic piece 5 when rotating. When a user presses the pressing end of the button 1, the pressing end and the contact end of the button 1 descend simultaneously, the first supporting piece 6 is pushed to rotate, the first supporting piece 6 pulls the contact bridge 4 to swing through the elastic piece 5 when rotating, and therefore the contact bridge 4 is controlled to touch any one contact plate 3.

In addition, the micro switch further includes:

the second supporting piece 7 is fixedly arranged in the shell 2, the second supporting piece 7 is arranged between the button 1 component and the contact bridge 4, and one end, close to the button 1 component, of the contact bridge 4 abuts against the second supporting piece 7. The second support 7 serves to define the position of the contact bridge 4 and to support the contact bridge 4 and serves as a pivot point for the contact bridge 4.

In addition, the contact bridge 4 is provided with a mounting hole for mounting the elastic member 5.

As shown in fig. 3, the microswitch further includes: and the magnetic steel 8 is arranged between the two contact plates 3. The magnetic steel 8 utilizes the magnetic blowout principle to elongate the electric arc to the direction outside the two contact plates 3 so as to rapidly extinguish the electric arc. Whereby the switch can withstand larger load parameters.

Further, as shown in fig. 2, the housing 2 includes: the cover and the base are buckled with each other; the cover and the base are both provided with parts protruding towards the magnetic steel 8 to form positioning parts 9, and the two positioning parts 9 clamp the magnetic steel 8. The magnetic steel 8 is clamped by the cover and the positioning part 9 on the base to realize fixation.

In addition, as shown in fig. 4, a lever 10 mounting opening is provided on the housing 2, and the micro switch further includes: and a lever 10 installed in the installation opening of the lever 10, wherein the lever 10 is abutted against the pressing end of the button 1. The lever 10 is arranged to meet different driving modes of different mechanisms, and can be replaced at will, so that the adjustment and driving are convenient.

In the present embodiment, the lever 10 is a roller driving lever.

A second embodiment of the present invention relates to a micro switch, which is substantially the same as the micro switch of the first embodiment, and the main difference is that, as shown in fig. 5, the lever 10 of the present embodiment is an arc-shaped driving lever.

A third embodiment of the present invention relates to a micro switch, which is substantially the same as the micro switch of the first embodiment, and the main difference is that, as shown in fig. 6, the lever 10 of the present embodiment is a straight bent driving lever.

A fourth embodiment of the present invention relates to a micro switch, which is substantially the same as the micro switch of the first embodiment, and the main difference is that, as shown in fig. 7, the lever 10 of the present embodiment is a straight specific-length driving lever.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. A micro-switch, comprising:

a housing;

the two contact plates are arranged in the shell;

a button assembly having a portion located within the housing;

one end of each contact bridge is arranged in the two contact plates;

2. The micro-switch of claim 1, wherein the contact bridge defines a receiving slot, the receiving slot extends through a side of the contact bridge facing the button assembly, and the resilient member is mounted in the receiving slot and connected to the button assembly and the contact plate, respectively.

3. The microswitch of claim 2, wherein the button assembly comprises:

the first supporting piece is abutted against the contact end of the button and used for rotating when the button is pressed, the elastic piece is connected with the first supporting piece, and the first supporting piece is used for driving the contact bridge to rotate through the elastic piece when rotating.

4. The microswitch of claim 3, further comprising:

the second supporting piece is fixedly arranged in the shell, the second supporting piece is arranged between the button assembly and the contact bridge, and one end, close to the button assembly, of the contact bridge abuts against the second supporting piece.

5. The microswitch of claim 2, wherein the contact bridge defines mounting holes for mounting the spring.

6. The microswitch of claim 1, further comprising: and the magnetic steel is arranged between the two contact plates.

7. The microswitch of claim 6, wherein the housing comprises: the cover and the base are buckled with each other; the cover and the base are provided with parts protruding towards the magnetic steel to form positioning parts, and the two positioning parts clamp the magnetic steel.

8. The micro-switch of claim 3, wherein the housing defines a lever receiving opening, the micro-switch further comprising: and the lever is arranged in the lever mounting port and is abutted against the pressing end of the button.