CN107464713B - Micro-gap switch that can atress warp - Google Patents

Abstract

The invention discloses a microswitch capable of deforming under stress, which mainly comprises a shell, a driving rod, a common terminal, a terminal A, a terminal B, a connecting sheet, a tension rod, a pressure rod, a supporting block, a tension spring, a return spring, pins and contacts, wherein the supporting block is arranged on the shell between the pressure rod and the tension rod; the pressure pole receives the pressure of actuating lever under the effect of supporting shoe, and feeler and the hemisphere contact on the pressure pole receive pressure simultaneously respectively with connection piece and A terminal contact, A terminal and common terminal intercommunication, and the spring that sets up on the pressure pole this moment is exerted the pulling force to the pressure pole.

Description

Micro-gap switch that can atress warp

Technical Field

The invention relates to the field of micro control, in particular to a switch, and specifically relates to a microswitch capable of deforming under stress.

Background

The microswitch is a switch which has a minute contact interval and a quick action mechanism, performs a switching action by a specified stroke and a specified force, is covered by a shell, and has a driving rod outside. The electric character symbols are: and (8) SM. The micro switches are various in types, hundreds of internal structures are provided, and the micro switches are common, small and subminiature according to volume; according to the protection performance, the waterproof type, the dustproof type and the explosion-proof type are provided; according to the breaking form, there are single-connection type, double-connection type and multi-connection type. There is also a strong off microswitch (when the reed of the switch is not active, the switch can be turned off by external force); according to the breaking capacity, the current type is common, direct current type, micro current type and large current type. According to the using environment, the ceramic material is divided into a common type, a high temperature resistant type (250 ℃), an ultra high temperature resistant ceramic type (400 ℃)

the micro-switch is generally of the basic type without auxiliary pressing accessories and is derived into a small-stroke type and a large-stroke type. Different auxiliary pressing parts can be added according to the requirement, and the switches of the auxiliary pressing parts can be divided into various forms such as a button type, a reed roller type, a lever roller type, a short movable arm type, a long movable arm type and the like according to the added different auxiliary pressing parts. The microswitch is used for automatic control, safety protection and the like in equipment needing frequent circuit switching, is widely applied to electronic equipment, instruments and meters, mines, power systems, household appliances, electrical equipment and military fields such as aerospace, aviation, ships, missiles, tanks and the like, is widely applied to the fields, and has small but irreplaceable functions. The micro switches are used in a large number of devices, and involve a large number of actions, so that faults can occur in the long-term use process to influence the normal work of the system, and major accidents can be caused by the faults or damage of any one micro switch, so that the reliability of the micro switch in the application of the integrated system device can directly influence the operation of the whole system, and the improvement of the reliability of the micro switch application is particularly important.

The invention patent application No. 201080043024.5 application publication No. CN 102576618 a discloses a microswitch in which the rigidity of a lever member can be improved and the versatility can be prevented from being lowered. The microswitch comprises: a frame with a built-in opening and closing mechanism, a plunger for transmitting power to the opening and closing mechanism, and a rod member whose base end is supported by the frame. In this microswitch, the tip of the plunger is abutted against the lower surface of the lever member at an intermediate position in the longitudinal direction of the lever member, and the object to be detected can be abutted against the upper surface of the lever member at the tip of the lever member. A first reinforcing portion is formed on the upper surface of the lever member at a position avoiding an object abutting portion against which an object to be detected abuts, and a second reinforcing portion is formed on the lower surface of the lever member at a position avoiding a plunger abutting portion against which the tip of the plunger abuts. This micro-gap switch is inside to adopt the mode that plunger extrusion shell fragment changed the tie point to realize micro-gap switch's conversion work, though can realize micro-gap switch normal work, nevertheless extrudes the shell fragment atress for a long time and warp, leads to the spring leaf inefficacy easily, and the conversion between the inside contact point of switch leads to micro-gap switch elasticity not enough by a spring leaf control easily.

Disclosure of Invention

The invention aims to provide a microswitch capable of being stressed and deformed, and aims to solve the problem that the microswitch is invalid due to the fact that the microswitch is small in elasticity and a spring piece cannot turn over.

furthermore, the invention mainly comprises a shell, a driving rod, a common terminal, a terminal A, a terminal B, a connecting sheet, a tension rod, a pressure rod, a supporting block, a tension spring, a return spring, a pin and a contact, and the main realization principle is that the shell is E-shaped, the interior of the shell is divided into a first cavity, a second cavity and a third cavity, the common cavity is provided with a through hole, one end of the common terminal is arranged outside the shell, and the other end of the common terminal penetrates through the first cavity and is integrally connected with the connecting sheet arranged in the common cavity; one end of the terminal A, which is provided with the through hole, is arranged outside the shell, and the other end of the terminal A penetrates through the second cavity and is arranged in the common cavity; the end of the terminal B, which is provided with the through hole, is arranged outside the shell, and the other end of the terminal B penetrates through the third cavity and is arranged in the common cavity. A driving rod is arranged on one side of the shell opposite to the exposed end of the terminal, a tension rod is arranged at the opposite end of the terminal B, a pin is arranged on the tension rod, the pin is contacted with a connecting sheet, one end of the tension rod is connected with the driving rod, the other end of the tension rod is connected with the terminal B, a pressure rod is arranged at the opposite end of the terminal A, a feeler is arranged on one side of the connecting sheet close to the shell, a return spring is arranged between the terminal A and the connecting sheet of the pressure rod, any end of the elastic spring is connected with the connecting sheet, the other end of the elastic spring is connected with the end point of the pressure rod close to the terminal A, the distance between the feeler and the connecting sheet is equal to the distance between the end point of the pressure rod close to the terminal A and the pressure rod and the terminal A, a supporting block is arranged on the shell between the pressure rod and the tension rod, when the external force of one end, the pin and the conductive block on the tension rod are respectively disconnected with the connecting sheet and the terminal B at the same time, so that the terminal B is connected with the common terminal, and the tension spring on the tension rod exerts tension on the tension rod; the pressure pole receives the pressure of actuating lever under the effect of supporting shoe, and feeler and the hemisphere contact on the pressure pole receive pressure simultaneously respectively with connection piece and A terminal contact, A terminal and common terminal intercommunication, and the spring that sets up on the pressure pole this moment is exerted the pulling force to the pressure pole.

The invention is realized by the following technical scheme:

The invention relates to a microswitch capable of deforming under stress, which comprises an E-shaped shell, wherein the shell consists of a first cavity, a second cavity, a third cavity and a common cavity, one end of a common terminal provided with a through hole is arranged outside the shell, and the other end of the common terminal penetrates through the first cavity and is integrally connected with a connecting sheet arranged in the common cavity; one end of the terminal A, which is provided with the through hole, is arranged outside the shell, and the other end of the terminal A penetrates through the second cavity and is arranged in the common cavity; the end of the terminal B, which is provided with the through hole, is arranged outside the shell, and the other end of the terminal B penetrates through the third cavity and is arranged in the common cavity. A driving rod is arranged on one side, opposite to the exposed terminal, of the shell, a tension rod is arranged in the common cavity opposite to the terminal B, the driving rod is hooked with the tension rod, a tension spring is arranged on the tension rod, any one end of the tension spring is connected with the tension rod, the other end of the tension spring is connected with the terminal B, a pin is arranged on the tension rod and is in contact with a connecting sheet, the tension rod is connected with the terminal B under the tension of the tension spring under the condition that the microswitch is not influenced by external force, the pin is connected with the connecting sheet, and the terminal B is communicated with the common terminal; a pressure rod is arranged on the opposite surface of the A terminal in the common cavity, the pressure rod is formed by sleeving a sleeve and a conductive rod, the sleeve penetrates through the shell and is connected with a driving rod, one end, close to the B terminal, of the conductive rod penetrates through a connecting sheet and is provided with a hemispherical contact, a return spring is arranged on the conductive rod between the A terminal and the connecting sheet, any end of the return spring is connected with the connecting sheet, the other end of the return spring is connected with the conductive rod close to the A terminal, a metal feeler is fixed on the conductive rod and is arranged between the connecting sheet and the sleeve, the distance between the feeler and the connecting sheet is equal to the distance between the contact and the A terminal, the feeler is not connected with the connecting sheet and the contact is not connected with the A terminal under the condition that a microswitch is not influenced by external force, a supporting block is arranged on the shell between the pressure rod and the tension rod, the tension rod is under the action of the supporting block, the tension rod is under the tension of the driving rod far away from the shell, the pin and the conducting block on the tension rod are respectively and simultaneously disconnected with the connecting sheet and the terminal B, so that the terminal B is disconnected with the common terminal, and at the moment, the tension spring on the tension rod exerts tension on the tension rod; the pressure rod is pressed by the driving rod under the action of the supporting block, the feeler and the contact on the pressure rod are pressed to be simultaneously contacted with the connecting sheet and the terminal A respectively, the terminal A is communicated with the public terminal, and the spring arranged on the pressure rod exerts pulling force on the pressure rod.

Preferably, two opposite inner walls of the first cavity, the second cavity and the third cavity perpendicular to the common cavity are provided with inserting strips for fixing terminals, a partition plate is arranged between the first cavity, the second cavity and the common cavity, a gap between the inserting strips of the two opposite surfaces is equal to the thickness of the terminal arranged in the gap between the inserting strips of the two opposite surfaces, the partition plate is arranged between the first cavity, the second cavity and the common cavity, the outer walls of the first cavity, the second cavity and the third cavity are provided with chamfers, sharp parts on the microswitch are removed by the chamfers, friction force generated by contact of the microswitch and an external object is reduced, and the microswitch is fixed more stably.

preferably, be provided with the U type groove that is used for fixed micro-gap switch on the casing between first cavity and the second cavity and between second cavity and the third cavity, be provided with two holes with the opposite face that is provided with A terminal one side on the casing, the size of the hole that is close to the third cavity is limited only in passing the pressure bar to the pressure bar can freely reciprocate in the hole, and the hole size that is close to the second cavity is limited only in passing the tension bar, and the tension bar can freely reciprocate in the hole, the supporting shoe is connected as an organic whole with the casing.

preferably, the one end that the A terminal set up in public cavity inside is provided with the arc contact, and the arc contact can be guaranteed that the contact is just smooth, reduces the frictional force of debris dust and arc contact, the B terminal sets up to serve at public cavity and has cup jointed the plastic slab with the B terminal, be provided with the hemispherical contact with B terminal body coupling on the plastic slab, the hemispherical contact guarantees that the contact surface is smooth, clean, establish respectively and serve at the outside public terminal of first cavity, second cavity, third cavity, A terminal, B terminal and be provided with the hole that is used for the wiring, the hole shape is circular or for the U-shaped, the thickness of public terminal, A terminal, B terminal is 2 millimeters to 6 millimeters, the material is the metal.

Preferably, spring straining device includes that the top sets up notched set casing, fixed pin, tension spring, be provided with the fixed pin that is used for fixed set casing on the outer wall that the set casing is close to B terminal end, the arbitrary one end setting of fixed pin perpendicular to set casing is on the set casing, and the other end setting is on the inner wall of casing, tension spring sets up the inside at the set casing, and tension spring's arbitrary one end links to each other with the plastic slab, and the other end is fixed on the tension bar, and micro-gap switch does not receive under the state of any external force, and tension spring's pulling force links to each other tension bar and B terminal, the connection piece passes the lower extreme that the set casing is located the contact and contacts with the contact.

Preferably, the pressure pole includes sleeve pipe, conducting rod, contact, the conducting rod is cup jointed to the arbitrary one end of sleeve pipe, and the other end is connected with the actuating lever, be provided with the hole on the connecting piece, the hole size is limited only reciprocating of conducting rod, and the conducting rod is close to the one end of A terminal and is provided with hemispherical contact, makes conducting rod contact jaw surface clean, level and smooth, the contact material is metal.

Preferably, the spring return device comprises a return spring and an antenna, the return spring is arranged between the connecting sheet and the terminal A, any one end of the return spring is connected with the connecting sheet, the other end of the return spring is connected with the hemispherical contact, the return spring exerts pulling force on the conducting rod when the micro switch is not under the action of external force, and the antenna is made of metal.

preferably, the tension rod comprises an insulating column, a connecting rod and a conductive block, the insulating column is provided with a through hole which is used for being hooked with the driving rod near the end of the driving rod, the insulating column is sleeved with the connecting rod, the connecting rod is provided with the conductive block near the end of the terminal B, the conductive block is hemispherical, the surface of the contact point is guaranteed to be smooth and clean, and the connecting rod is made of metal.

Preferably, the one end that the pull rod was kept away from to the actuating lever is provided with the gyro wheel, the gyro wheel is towards the micro-gap switch outside, and the gyro wheel both sides are provided with the card that is used for fixed gyro wheel and with actuating lever an organic whole connection, are provided with the roller bearing that meets with the gyro wheel on the card, and the actuating lever material is the metal.

compared with the prior art, the invention has the following advantages and beneficial effects:

(1) According to the microswitch capable of being deformed by force, disclosed by the invention, the spring tension device is arranged between the connection of the terminal B and the common terminal, and the spring tension device can apply tension to the contact points when the microswitch is subjected to force conversion, so that the internal elasticity of the microswitch is enhanced, and the stability of the microswitch is improved.

(2) According to the microswitch capable of being stressed and deformed, the spring return force device is arranged at the connecting part of the terminal A and the common terminal, the terminal A is connected with the common terminal when the pressure rod is stressed, the spring return force device exerts reverse tension on the pressure rod, and when the pressure rod is not stressed, the pressure rod is under the tension of the spring return force device, so that the terminal A and the common terminal are quickly disconnected, the elastic force recovered by the microswitch is increased, the switch failure caused by the failure of an internal elastic component is prevented, and the micro switch is more stably switched.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic view of the structure of the housing of the present invention

FIG. 3 is a schematic structural diagram of the spring tension device and the spring return device of the present invention

The device comprises a roller 1, a roller 2, a card 3, a driving rod 4, a pressure rod 5, a supporting block 6, a tension rod 7, a fixed shell 8, a fixed pin 9, a plastic plate 10, a shell 11, a cutting strip 12, a terminal B13, a terminal A14, a common terminal 15, a conductive rod 16, a feeler 17, a return spring 18, a hemispherical contact 19, a tension spring 20, a conductive block 20, a first cavity 101, a second cavity 102, a third cavity 103, a common cavity 104, a U-shaped groove 105, a sleeve 401, an insulating column 601, a pin 602 and a connecting piece 1401.

Detailed Description

the present invention will be described in further detail with reference to preferred examples thereof, but the present invention is not limited thereto.

Example 1:

Referring to the attached drawings 1, 2 and 3, the invention discloses a micro switch capable of deforming under stress,

The electronic device comprises an E-shaped shell 10, wherein the shell is composed of a first cavity 101, a second cavity 102, a third cavity 103 and a common cavity 104, the first cavity 101, the second cavity 102 and the third cavity 103 are respectively vertical to the common cavity 104, a common terminal 14, an A terminal 13, a B terminal 12 and a connecting sheet 1401 are respectively arranged in the first cavity 101, the second cavity 102, the third cavity 103 and the common cavity 104, two opposite inner walls of the first cavity (101), the second cavity 102 and the third cavity 103, which are vertical to the common cavity 104, are provided with inserting strips 11 for fixing the terminals, one end of the common terminal 14, which is provided with a through hole, is arranged outside the shell 10, and the other end of the common terminal is integrally connected with the connecting sheet 1401 arranged in the common cavity 104 after penetrating through the first cavity 101; one end of the terminal a 13, which is provided with a through hole, is arranged outside the shell 10, and the other end of the terminal a penetrates through the second cavity 102 and is arranged in the common cavity 104; one end of the B terminal 12 provided with the through hole is disposed outside the housing 10, and the other end is disposed in the common cavity 104 through the third cavity 103. A driving rod 3 is arranged on one side of the shell 10 opposite to the exposed terminal, a tension rod 6 is arranged in the common cavity 104 opposite to the B terminal 12, the tension rod 6 is composed of an insulating column 601 and a pin 602, any end of the insulating column 601 is sleeved with the tension rod 6, the other end of the insulating column 601 is provided with a hole, the hole is hooked with the driving rod 3, a tension spring 19 is arranged on the tension rod 6, any end of the tension spring 19 is connected with the tension rod 6, the other end of the tension spring is connected with the B terminal 12, the pin 602 is arranged on the tension rod and is in contact with a connecting sheet 1401, the tension rod 6 is connected with the B terminal 12 under the tension of the tension spring 19 when the microswitch is not under the action of external force, the pin 602 is connected with the connecting sheet, and the B terminal 12 is communicated with the common terminal 14; a pressure rod 4 is arranged in the common cavity 104 opposite to the A terminal 13, the pressure rod 4 is composed of a sleeve 401 and a conductive rod 15, the sleeve 401 penetrates through the shell to be connected with the driving rod 3, the conductive rod 15 penetrates through a connecting sheet 1401, a hemispherical contact 18 is arranged at the end point of the conductive rod 15 close to the A terminal 13, a return spring 17 is arranged on the conductive rod 15 between the A terminal 13 and the connecting sheet 1401, any end of the return spring 17 is connected with the connecting sheet 1401, the other end of the return spring is connected with the conductive rod 15 close to the A terminal 13, a feeler 16 is fixed on the conductive rod 15, the feeler 16 is arranged between the connecting sheet 1401 and the sleeve 401, the distance between the feeler 16 and the connecting sheet 1401 is equal to the distance between the hemispherical contact 18 and the A terminal 13, the feeler 16 is not connected with the connecting sheet 1401 under the action of external force of the microswitch, and the contact 18 is not connected with, a supporting block 5 is arranged on the shell 10 between the pressure rod 4 and the tension rod 6, when one end of the driving rod 3, which is far away from the tension rod 6, is extruded by external force, the tension rod 6 is under the action of the supporting block 5, which is far away from the shell 10, the driving rod 3 is under the pulling force, which is far away from the shell 10, the pin 602 and the conductive block of the tension rod 6 are respectively and simultaneously disconnected with the connecting sheet 1401 and the B terminal 12, so that the B terminal 12 is disconnected with the common terminal 14, and at the moment, the tension spring 19 on the tension rod 6 applies pulling force to the tension rod 6; the pressure rod 4 is pressed by the driving rod 3 under the action of the supporting block 5, the feeler 16 and the hemispherical contact 18 on the pressure rod 4 are pressed to simultaneously contact the connecting sheet 1401 and the A terminal 13 respectively, the A terminal 13 is communicated with the common terminal 14, and at the moment, a return force 17 spring arranged on the pressure rod 4 applies a pulling force to the pressure rod 4.

In order to enhance the internal elasticity of the microswitch, improve the stability of the microswitch, prevent the switch failure caused by the failure of an internal elastic component and ensure that the conversion between microswitches is more stable, the invention relates to a force-bearing microswitch which mainly comprises a shell 10, a driving rod 3, a common terminal 14, a terminal 13, a terminal 12, a connecting sheet 1401, a tension rod 6, a pressure rod 4, a supporting block 5, a tension spring 19, a return spring 17, a pin 602 and an antenna 16, and mainly has the realization principle that the shell 10 is E-shaped, the interior of the shell is divided into a first cavity 101, a second cavity 102, a third cavity 103 and a common cavity 104, one end of the common terminal 14 provided with a through hole is arranged outside the shell 10, and the other end of the common terminal penetrates through the first cavity 101 and is integrally connected with the connecting sheet 1401 arranged in the common cavity 104; one end of the terminal a 13, which is provided with a through hole, is arranged outside the shell 10, and the other end of the terminal a penetrates through the second cavity 102 and is arranged in the common cavity 104; one end of the B terminal 12 provided with the through hole is disposed outside the housing 10, and the other end is disposed in the common cavity 104 through the third cavity 103. A driving rod 3 is arranged on one side of the shell 10 opposite to the exposed terminal, a tension rod 6 is arranged at the opposite end of the B terminal 12, a pin 602 is arranged on the tension rod 6, the pin 602 is in contact with a connecting sheet 1401, one end of the tension rod 6 is connected with the driving rod 3, and the other end of the tension rod 6 is connected with the B terminal 12; the opposite end of the A terminal 13 is provided with a pressure rod 4, the pressure rod 4 is provided with an antenna on one side of the connecting sheet 1401 close to the shell 10, the pressure rod 4 is provided with a return spring 17 between the A terminal 13 and the connecting sheet 1401, any one end of the return spring 17 is connected with the connecting sheet 1401, the other end of the return spring is connected with the end point of the pressure rod 4 close to the A terminal 13, the distance between the antenna 16 and the connecting sheet 1401 is equal to the distance between the end point of the pressure rod 4 close to the A terminal 13 and the end point of the A terminal 13 arranged in the common cavity 104, a supporting block 5 is arranged on the shell 10 between the pressure rod 4 and the tension rod 6, when one end of the driving rod 3 far away from the tension rod is pressed by external force, the tension rod 6 is pressed by the driving rod 3, a pin 602 and a conductive block 20 on the tension rod 6 are respectively disconnected with the connecting sheet 1401 and the B terminal 12, so that the B terminal 12 is disconnected with, at the moment, the tension spring 19 on the tension rod 6 exerts tension on the tension rod 6; the pressure rod 4 is pressed by the driving rod 4 under the action of the supporting block 5, the feeler 16 and the hemispherical contact 18 on the pressure rod 4 are pressed to simultaneously contact the connecting sheet 1401 and the A terminal 13 respectively, the A terminal 13 is communicated with the common terminal 14, and at the moment, the return spring 17 arranged on the pressure rod 4 applies pulling force to the pressure rod 4.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (7)

1. The microswitch capable of deforming under stress is characterized by comprising a shell (10) with a cavity arranged inside, wherein the shell (10) comprises a first cavity (101), a second cavity (102), a third cavity (103) and a common cavity (104), and the first cavity (101), the second cavity (102) and the third cavity (103) are perpendicular to the common cavity (104);

A common terminal (14) is arranged in the first cavity (101);

An A terminal (13) perpendicular to the common cavity (104) is arranged in the second cavity (102), any one end of the A terminal (13) is arranged outside the second cavity (102), and the other end of the A terminal is arranged in the common cavity (104);

a B terminal (12) is arranged in the third cavity (103), any one end of the B terminal (12) is perpendicular to the common cavity (104) and is arranged outside the third cavity (103), the other end of the B terminal is arranged in the common cavity (104), the common cavity (104) is provided with a connecting sheet (1401), and the connecting sheet (1401) and the common terminal (14) are integrally connected;

A tension rod (6) is oppositely arranged in the public cavity (104) and the terminal B (12), a spring type tension device is arranged on the tension rod (6), one side, close to the connecting sheet (1401), of the tension rod (6) is provided with a pin (602), the tension rod (6) is connected with the terminal B (12) with any one end arranged in the public cavity (104) through the spring type tension device in a normal state, the pin (602) is connected with the connecting sheet (1401), a driving rod (3) is arranged on the opposite surface of one side, exposed with the terminal A (13), of the outer portion of the shell (10), and the tension rod (6) penetrates through the shell (10) to be hooked with the driving rod (3);

The pin connection structure is characterized in that a pressure rod (15) is oppositely arranged in the common cavity (104) and the terminal A (13), the end, close to the terminal A (13), of the pressure rod (6) is connected with a spring return device, the other end of the tension rod (6) penetrates through the shell (10) to be connected with the driving rod (3), the other end of the spring return device is connected with a connection sheet (1401) in the common cavity (104), when the driving rod (3) is pressed downwards under stress, the pressure rod (6) is compressed towards the interior of the shell (10), the spring return device is connected with the connection sheet (14) and the terminal A (13), a support block (5) is arranged on one side, provided with the driving rod (3), of the shell (10), the support block (5) is located between the pressure rod (15) and the tension rod (6), the tension rod (6) is under the action of the support block (5) to separate a pin (602) from the connection sheet (1401), the tension rod (6) is separated from the terminal B (12);

The two opposite inner walls of the first cavity (101), the second cavity (102) and the third cavity (103) which are perpendicular to the common cavity (104) are provided with inserting strips (11) for fixing terminals, partition plates are arranged among the first cavity (101), the second cavity (102), the third cavity (103) and the common cavity (104), the thickness of a gap between the inserting strips (11) of the two opposite surfaces is equal to that of the terminals arranged in the first cavity (101), the second cavity (102) and the third cavity (103), and the outer walls of the first cavity (101), the second cavity (102) and the third cavity (103) are provided with chamfers;

u-shaped grooves (105) for fixing the micro switch are arranged between the first cavity (101) and the second cavity (102) and between the second cavity (102) and the third cavity (103) on the shell (10).

2. a force deformable microswitch according to claim 1, one end of the A terminal (13) arranged in the common cavity (104) is provided with an arc contact, the terminal B (12) is arranged at one end of the common cavity (104) and is provided with a plastic sleeve plate (9), the plastic sleeve plate (9) is sleeved with the terminal B (12), a hemispherical contact integrally connected with the B terminal (12) is arranged on the plastic plate (9), holes for wiring are arranged at one ends of the common terminal (14), the A terminal (13) and the B terminal (12) which are arranged outside the first cavity (101), the second cavity (102) and the third cavity (103), the hole is round or U-shaped, and the thickness of the common terminal (14), the A terminal (13) and the B terminal (12) is 2 mm to 6 mm.

3. The microswitch capable of being stressed and deformed according to claim 2, wherein the spring type tension device comprises a fixed shell (7) with a groove at the top, a fixed pin (8) and a tension spring (19), the fixed pin (8) for fixing the fixed shell (7) is arranged on the outer wall of the fixed shell (7) close to the end of the B terminal (12), the fixed pin (8) is perpendicular to any end of the fixed shell (7) and is arranged on the fixed shell (7), the other end of the fixed shell is arranged on the inner wall of the shell (10), the tension spring (19) is arranged inside the fixed shell (7), any end of the tension spring (19) is connected with the plastic plate (9), the other end of the tension spring is fixed on the tension rod (6), and under the condition that the microswitch is not subjected to any external force, the tension force of the tension spring (19) connects the tension rod (6) with the B terminal (12), the connecting piece (1401) penetrates through the fixed shell (17) and is positioned at the lower end of the contact (602).

4. The microswitch capable of being stressed and deformed according to claim 3, wherein the pressure rod (6) comprises a sleeve (401), a conductive rod (15) and a contact (18), the conductive rod (15) is sleeved at any one end of the sleeve (401), the other end of the sleeve is connected with the driving rod (3), a hole is formed in the connecting sheet (1401), the size of the hole is limited only by up-down movement of the conductive rod (15), and a hemispherical contact (18) is arranged at one end, close to the A terminal (13), of the conductive rod (15).

5. a force deformable microswitch according to claim 4, wherein the spring return means comprises a return spring (17) and an antenna (16), the return spring being disposed between the connection piece (1401) and the A terminal (13), the return spring (17) being connected at either end to the connection piece and at the other end to the hemispherical contact (18).

6. The microswitch capable of being stressed and deformed according to claim 5, wherein the tension rod (6) consists of an insulating column (601), a connecting rod and a conductive block (20), wherein a through hole for hooking with the driving rod (3) is formed in the end, close to the driving rod (3), of the insulating column, the insulating column (601) is sleeved with the connecting rod, and the conductive block (20) is formed in the end, close to the B terminal (12), of the connecting rod.

7. The microswitch capable of being stressed and deformed according to claim 6, wherein one end of the driving rod (3) far away from the tension rod (6) is provided with a roller (1), the roller (1) faces the outer side of the microswitch, clamping pieces (2) which are used for fixing the roller (1) and are integrally connected with the driving rod (3) are arranged on two sides of the roller (1), and a roller (1) connected with the roller is arranged on each clamping piece (2).