CN210489475U

CN210489475U - High-power microswitch

Info

Publication number: CN210489475U
Application number: CN201922159082.5U
Authority: CN
Inventors: 彭翔翔
Original assignee: Yueqing Wandu Electric Co Ltd
Current assignee: Yueqing Wandu Electric Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-05-08
Anticipated expiration: 2029-12-05

Abstract

A high-power microswitch comprises a shell, a switch button, a first fixed contact, a second fixed contact and a movable contact, wherein the shell comprises a shell and a base, the shell is buckled above the base, the first fixed contact and a second electric contact are both arranged in the shell, the first fixed contact is positioned above the second fixed contact, pins of the first fixed contact and the second fixed contact penetrate through the base and are exposed outside, the switch button is connected with the movable contact, the switch button drives the movable contact to move between the first fixed contact and the second fixed contact, when the switch button is in a non-pressing state, the movable contact is in contact with the second contact, and when the switch button is in a pressing state, the movable contact is in contact with the first contact. The advantage lies in, shift knob is whole to be promoted by three spring, compares traditional micro-gap switch and has bigger power that resets, can avoid long-time use spring fatigue, causes the condition emergence that resets inefficacy.

Description

High-power microswitch

Technical Field

The utility model relates to a micro-gap switch especially relates to a high-power micro-gap switch.

Background

The micro switch is usually used for electrical equipment, is used for the break-make and the switching of control circuit, and the little shift knob of specially adapted stroke, because micro switch mentions lessly, its inside spare part is for example the sheetmetal, and the electrical contact is also all smaller and more exquisite, and the interval between each electrical components is also very narrow and small, just also leads to when break-make circuit power is great, probably leads to contact separating force not enough, and speed is slow excessively, and reset spring is ageing, and final components and parts fuse, causes accidents such as short circuit.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the high-power microswitch is more reliable in on-off and higher in safety and can adapt to higher power.

In order to achieve the above object, the present invention provides the following solutions: a high-power microswitch comprises a shell, a switch button, a first fixed contact, a second fixed contact and a movable contact, wherein the shell comprises a shell and a base, the shell is buckled above the base, the first fixed contact and a second electric contact are both arranged in the shell, the first fixed contact is positioned above the second fixed contact, pins of the first fixed contact and the second fixed contact penetrate through the base and are exposed outside, the switch button is connected with the movable contact, the switch button drives the movable contact to move between the first fixed contact and the second fixed contact, when the switch button is in a non-pressing state, the movable contact is in contact with the second contact, and when the switch button is in a pressing state, the movable contact is in contact with the first contact.

Furthermore, the switch button is connected with the moving contact through a first reset spring, the moving contact comprises a moving contact and a moving contact piece, the moving contact is arranged at two ends of the moving contact piece respectively, a slot is formed in the middle of the moving contact piece, positioning protrusions are arranged on two transverse sides of the slot, one end of the first reset spring is sleeved on the positioning protrusions, and the other end of the first reset spring is connected with the switch button.

Further, the bottom of the switch button is provided with a button boss, a concave hole is correspondingly formed in the base, a base boss is arranged in the concave hole, a second reset spring is arranged between the button bosses and between the base bosses, one end of the second reset spring is sleeved on the button boss, and the other end of the second reset spring is sleeved on the base boss.

Furthermore, the middle part of the switch button is of a cavity structure, a double-boss structure is arranged at the cavity structure, the double-boss structure and the switch button are integrally formed, one end of the first reset spring is sleeved on the positioning protrusion of the movable contact piece, and the other end of the first reset spring is sleeved on the double-boss structure.

Furthermore, the base is provided with an installation seat for fixing the first fixed contact and the second fixed contact.

The mounting base comprises a first fixed contact mounting base and a second fixed contact mounting base, the first fixed contact mounting base is located above the second fixed contact mounting base, a second fixed contact mounting hole is formed in the second fixed contact mounting base, the second fixed contact is inserted into the second fixed contact mounting hole, one end of a pin of the second fixed contact abuts against the plane of the second fixed contact mounting base, and the other end of the pin penetrates through the base and is exposed outside.

Further, the first fixed contact mounting seat is a right-angle thin-wall supporting seat, the pin of the first fixed contact abuts against the upper end plane of the right-angle thin-wall supporting seat, a first fixed contact mounting hole is formed in the corresponding position of the first fixed contact of the shell, and the first fixed contact is inserted into the first fixed contact mounting hole.

Furthermore, buckles for buckling the shell are further arranged on the planes on the two sides of the base in the width direction.

Furthermore, the periphery of the outer contour of the first buckle is provided with an inward concave plane which is convenient for separating the shell from the base.

The utility model discloses an useful part lies in:

two contacts of the static contact are respectively arranged on two sides of the micro switch, so that the distance between the two contacts is larger, and the influence caused by electric arcs in the circuit switching process is reduced. Under the condition that the whole size is not increased in proportion, the switch button is wholly pushed by the three springs, and compared with the traditional microswitch, the reset force is larger, so that the condition that the reset failure is caused due to the fact that the springs are used for a long time and fatigue is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a high-power micro-switch of the present invention.

Fig. 2 is the internal structure diagram of the high-power micro-gap switch of the present invention.

Fig. 3 is a schematic structural diagram of a high-power micro-switch base according to the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of a high-power micro-gap switch of the present invention.

Fig. 5 is a schematic structural view of the movable contact piece of the high-power microswitch of the invention.

Fig. 6 is a schematic structural view of a high-power microswitch switch button of the present invention.

Reference numerals: the switch comprises a shell 1, a base 2, a switch button 3, a first static contact 4, a second static contact 5, a movable contact 6, a movable contact piece 7, a first reset spring 8, a second reset spring 9, a first static contact mounting seat 21, a second static contact mounting seat 22, a concave hole 23, a base boss 24, a buckle 25, an inner concave plane 26, a double-boss structure 31, a button boss 32, a pin 41 of the first static contact, a pin 42 of the second static contact and a positioning bulge 71.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 6 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The utility model provides a high-power micro-gap switch, including casing 1, shift knob 3, first static contact 4, second static contact 5 and moving contact 6, first static contact 4 is equipped with two, set up respectively at 1 length direction both ends of casing, second static contact 5 is equipped with two equally, set up respectively at 1 length direction's of casing both ends equally, casing 1 includes shell and base 2, the shell passes through buckle 25 lock in base 2 top, buckle 25 is interior concave plane 26 all around, design interior concave plane 26 can be convenient for thin thing to insert and dismantle casing 1. The first fixed contact 4 and the second electric contact are both arranged in the shell, the first fixed contact 4 is positioned above the second fixed contact 5, the first fixed contact 4 and the second fixed contact 5 are vertically corresponding, a pin 41 of the first fixed contact and a pin 42 of the second fixed contact penetrate through the base 2 and are exposed outside, the two first fixed contacts 4 and the pins thereof form a circuit, the two second fixed contacts 5 and the pins thereof form another circuit, the switch button 3 is connected with the movable contact 6, the switch button 3 drives the movable contact 6 to move between the first fixed contact 4 and the second fixed contact 5, when the switch button 3 is in a non-pressing state, the movable contact 6 is in contact with the second contact, and when the switch button 3 is in a pressing state, the movable contact 6 is in contact with the first contact. The bottom of shift knob is equipped with button boss 32, is equipped with shrinkage pool 23 on the base correspondingly, is equipped with base boss 24 in the shrinkage pool 23, is equipped with second reset spring 9 between the button boss 32 and between the base boss 24, and second reset spring 9 pot head is established on button boss 32, and another pot head is established on base boss 24. The second return spring 9 gives a restoring force directly upward.

The switch button 3 is connected with the movable contact 6 through a first reset spring 8, the first reset spring 8 provides direct acting force in an oblique direction, the movable contact 6 comprises a movable contact and a movable contact piece 7, the movable contacts are respectively arranged at two ends of the movable contact piece 7, a groove is formed in the middle of the movable contact piece 7, positioning protrusions 71 are arranged on two transverse sides of the groove, one end of the first reset spring 8 is sleeved on the positioning protrusions 71, and the other end of the first reset spring is connected with the switch button 3.

The middle part of the switch button 3 is of a cavity structure, a double-boss structure 31 is arranged at the cavity structure, the double-boss structure 31 and the switch button 3 are integrally formed, one end of the first reset spring 8 is sleeved on the positioning bulge 71 of the movable contact piece 7, and the other end of the first reset spring is sleeved on the double-boss structure 31. The double boss structures 31 point to two sides of the switch button 3 respectively, the linkage relation between the switch button 3 and the movable contact 6 is as follows, when the switch button is not pressed down, an oblique angle is formed among the double boss structures 31, the positioning boss and the first reset spring 8, the force application direction of the oblique angle spring is downward, the movable contact 7 is driven to move downward, and the movable contact 6 is contacted with the second fixed contact 5. When the switch button 3 is pressed down, in the pressing process, the spring gradually changes from the force application direction under the bias to the force application direction on the bias, and drives the movable contact 6 to move upwards, so that the movable contact 6 is contacted with the first fixed contact 4.

Thus, the elastic return of the switch knob 3 has three springs for applying the acting force at the same time, and has a large restoring force.

The first fixed contact mounting seat 21 is located above the second fixed contact mounting seat 22, a second fixed contact mounting hole is formed in the second fixed contact mounting seat 22, the second fixed contact 5 is inserted into the second fixed contact mounting hole, one end of a pin of the second fixed contact 5 abuts against the plane of the second fixed contact mounting seat 22, the first fixed contact mounting seat 21 is a right-angle thin-wall supporting seat, the second fixed contact 5 is located on the inner side of the right-angle thin-wall supporting seat, the pin of the first fixed contact 4 abuts against the upper end plane of the right-angle thin-wall supporting seat, a first fixed contact 4 mounting hole is formed in the shell 1 at the corresponding position of the first fixed contact 4, and the first fixed contact 4 is inserted into the first fixed contact 4.

It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A high-power microswitch is characterized by comprising a shell, a switch button, a first fixed contact, a second fixed contact and a movable contact, wherein the shell comprises a shell and a base, the shell is buckled above the base, the first fixed contact and the second electric contact are both arranged in the shell, the first fixed contact is positioned above the second fixed contact, pins of the first fixed contact and the second fixed contact penetrate through the base to be exposed outside, the switch button is connected with the movable contact, the movable contact is driven by the switch button to move between the first fixed contact and the second fixed contact, the movable contact is contacted with the second contact when the switch button is in a non-pressing state, and the movable contact is contacted with the first contact when the switch button is in a pressing state.

2. The high-power microswitch of claim 1, wherein the switch button is connected to the movable contact through a first return spring, the movable contact comprises a movable contact and a movable contact piece, the movable contact is respectively arranged at two ends of the movable contact piece, a slot is arranged in the middle of the movable contact piece, positioning protrusions are arranged at two transverse sides of the slot, one end of the first return spring is sleeved on the positioning protrusions, and the other end of the first return spring is connected to the switch button.

3. A high power micro-switch according to claim 2, wherein the bottom of the switch button is provided with a button boss, the base is correspondingly provided with a concave hole, the base boss is arranged in the concave hole, and a second return spring is arranged between the button bosses and between the base bosses, one end of the second return spring is sleeved on the button boss, and the other end of the second return spring is sleeved on the base boss.

4. A high power micro-switch according to claim 3, characterized in that the middle part of the switch button is a cavity structure, a double-boss structure is provided at the cavity structure, the double-boss structure is integrally formed with the switch button, one end of the first return spring is sleeved on the positioning protrusion of the movable contact piece, and the other end is sleeved on the double-boss structure.

5. The high-power microswitch of claim 4, wherein the base is provided with a mounting seat for fixing the first fixed contact and the second fixed contact.

6. The high-power microswitch of claim 5, wherein the mounting base comprises a first fixed contact mounting base and a second fixed contact mounting base, the first fixed contact mounting base is located above the second fixed contact mounting base, the second fixed contact mounting base is provided with a second fixed contact mounting hole, the second fixed contact is inserted into the second fixed contact mounting hole, one end of a pin of the second fixed contact abuts against the plane of the second fixed contact mounting base, and the other end of the pin penetrates through the base and is exposed outside.

7. The high-power microswitch of claim 6, wherein the first fixed contact mounting seat is a right-angle thin-walled support seat, the pin of the first fixed contact abuts against the upper end plane of the right-angle thin-walled support seat, the housing is provided with a first fixed contact mounting hole at a corresponding position of the first fixed contact, and the first fixed contact is inserted into the first fixed contact mounting hole.

8. The high power microswitch of claim 7, wherein the base is further provided with a buckle for buckling the housing on two side planes in the width direction.

9. The high power microswitch of claim 8, wherein the first latch has a concave surface around the outer contour for easy separation of the housing and the base.