Double-loop microswitch

Abstract

The utility model relates to the technical field of microswitches, and discloses a double-loop microswitch which comprises a shell, a fixed conductive part and a movable conductive part which are arranged on the shell, and a pressing part used for driving the movable conductive part to move towards the fixed conductive part, the fixed conductive piece comprises a plurality of first static contact pieces and second static contact pieces which are fixedly connected to the shell, the movable conductive piece comprises a plurality of first movable contact pieces and second movable contact pieces which are movably connected to the shell, when the pressing piece works, the first movable contact pieces can be in contact with the first static contact pieces, and the second movable contact pieces can be in contact with the second static contact pieces. Therefore, two mutually independent loops are formed. When the microswitch is closed, two loops are formed, after one loop breaks down, the other loop can achieve circuit conduction, and therefore normal use of the microswitch is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of micro switches, and in particular to a dual-circuit micro switch. Background Art

[0002] A micro switch is a switch with a small contact spacing and a quick-action mechanism. It usually performs switching actions with a specified stroke and force. It has the advantages of short action stroke and fast switching. It is widely used in electronic equipment, instrumentation, mining and power systems, aerospace and other fields.

[0003] In the related art, a common micro switch has only one circuit. When the circuit fails, the normal use of the micro switch will be affected, which needs to be improved. Utility Model Content

[0004] In order to ensure the normal use of the micro switch, the present application provides a dual-circuit micro switch.

[0005] The present application provides a dual-circuit micro switch adopting the following technical solution:

[0006] A dual-circuit micro switch includes a housing, a fixed conductive member and a movable conductive member provided on the housing, and a pressing member for driving the movable conductive member to move toward the fixed conductive member, wherein the fixed conductive member includes a plurality of first static contacts and a second static contact member fixedly connected to the housing, and the movable conductive member includes a plurality of first movable contacts and a second movable contact member movably connected to the housing. When the pressing member is in operation, the first movable contact member can contact the first static contact member, and the second movable contact member can contact the second static contact member, thereby forming two independent circuits.

[0007] By adopting the above technical solution, when the pressing member drives the movable conductive member toward the fixed conductive member, the first movable contact piece contacts the first static contact piece, and the second movable contact piece contacts the second static contact piece, thereby electrically connecting the first movable contact piece with the first static contact piece and the second movable contact piece with the second static contact piece. This forms two independent circuits in the microswitch, one of which conducts along the first movable contact piece and the first static contact piece, and the other conducts along the second movable contact piece and the second static contact piece. With this arrangement, even if one circuit fails, the other circuit can still maintain normal conduction, thereby ensuring the normal operation of the microswitch.

[0008] Optionally, the first movable contact piece includes a connecting portion, a movable portion integrally formed with the connecting portion, and a plurality of conductive portions, wherein the movable portion is formed to extend from the connecting portion toward a side away from the fixed conductive member, and the second movable contact piece also includes a connecting portion, a movable portion integrally formed with the connecting portion, and a plurality of conductive portions, and both the first movable contact piece and the second movable contact piece are capable of generating elastic deformation;

[0009] The conductive parts of the first movable contact piece are respectively in contact with the adjacent first static contact piece, and the movable part can be in contact with the adjacent first static contact piece when under pressure; the conductive parts of the second movable contact piece are respectively in contact with the adjacent second static contact piece, and the movable part can be in contact with the adjacent second static contact piece when under pressure.

[0010] By adopting the above technical solution, when the pressing member applies pressure to the movable conductive member, the movable portion is deformed toward the side closer to the fixed conductive member, causing the movable portion of the first movable contact piece to contact the adjacent first stationary contact piece, and the movable portion of the second movable contact piece to contact the adjacent second stationary contact piece, thereby achieving circuit conduction. When the pressure applied to the movable conductive member is released, the movable portion of the first movable contact piece returns to its original position, separated from the first stationary contact piece, and the movable portion of the second movable contact piece returns to its original position, separated from the second stationary contact piece, thereby achieving circuit disconnection.

[0011] In the present application, the resetting of the first moving contact piece and the second moving contact piece depends on their own elastic deformation ability, which not only has the advantages of simple structure and good resetting effect, but also during production and processing, since there is no need to additionally set springs and other elastic parts, it is also beneficial to reduce the number of parts of the micro switch and simplify the production process, thereby improving the processing efficiency of the micro switch.

[0012] Optionally, a limiting structure is provided between the housing and the movable conductive member to prevent relative rotation between the two.

[0013] By adopting the above technical solution, the movable conductive part is difficult to rotate relative to the shell, so that it can maintain precise alignment with the fixed conductive part, which is conducive to ensuring stable transmission of current.

[0014] Optionally, the limiting structure includes a first limiting block and a first limiting groove that are plug-fitted together, the first limiting block is arranged on the movable conductive part, and the first limiting groove is opened on the shell, or the first limiting block is arranged on the shell, and the first limiting groove is opened on the movable conductive part.

[0015] By adopting the above technical solution, when the movable conductive part is installed in place, the first limit block is located in the first limit groove, and the groove wall of the first limit groove can hinder the rotation of the first limit block, thereby preventing the movable conductive part from rotating relative to the shell. The structure is simple and the limiting effect is good.

[0016] Optionally, the limiting structure includes at least two second limiting blocks integrally provided on the shell, the second limiting blocks respectively abut against two sides of the movable conductive member, and the pressing member is provided with second limiting grooves for respectively extending the second limiting blocks.

[0017] By adopting this technical solution, when the movable conductive member is in place, the second limit blocks respectively abut against either side of the movable conductive member, thereby preventing the movable conductive member from rotating relative to the housing. This provides a simple structure and a good limiting effect. The second limit blocks are integrally formed on the housing, eliminating the need for additional slotting in the movable conductive member during production, making processing easier.

[0018] When the pressing piece is installed in place, the second limit block is located in the second limit groove. The two can cooperate to prevent the pressing piece from rotating relative to the shell, so that the pressing piece can only move in a straight line relative to the shell, so as to avoid increasing the movement stroke of the pressing piece when controlling the circuit to be turned on and off, and the circuit is turned on and off quickly.

[0019] Optionally, the pressing member includes a positioning ring, a button located on the inner side of the positioning ring, a connecting ring that is sealed between the button and the positioning ring and can produce elastic deformation, the shell is provided with a positioning groove for the positioning ring to extend into, the positioning ring is pressed on the connecting part and / or the conductive part, the button is aligned with the movable part, and the shell is provided with an anti-slip part for preventing the positioning ring from detaching from the positioning groove.

[0020] By adopting this technical solution, when the button is pressed, it applies pressure to the movable portions of the first and second movable contacts, causing them to contact the adjacent first or second stationary contacts, thereby completing the circuit. Simultaneously, the connecting ring deforms due to the button's movement, generating a spring force that automatically resets the ring when the button is released, disconnecting the circuit. This results in a simple structure and effective reset.

[0021] Furthermore, because the connecting ring is sealed between the button and the positioning ring, it blocks moisture from seeping into the housing through the gap between the button and the positioning ring during use, preventing short circuits between the fixed and movable conductive parts. This provides enhanced safety. The anti-slip feature prevents the positioning ring from moving out of the positioning slot, improving the stability of the connection between the push-button and the housing and enhancing the integrity of the micro switch.

[0022] Optionally, the anti-slip component includes a cover plate and several extension plates arranged on the side of the cover plate facing the shell, the circumferential side wall of the positioning ring is integrally formed with a pressure ring, the cover plate is pressed against the side of the pressure ring away from the shell, a number of snap-in holes are provided on the extension plate, and the shell is provided with snap-in blocks equal in number to and corresponding to the snap-in holes, and each of the snap-in blocks is snap-fitted with the corresponding snap-in hole.

[0023] By adopting this technical solution, when the locating ring extends into the locating slot, the pressure ring abuts against the side of the housing facing the locating slot. Once the cover is attached to the housing, it presses against the pressure ring to restrict its movement away from the housing. This effectively prevents the pressing member from separating from the housing, resulting in a more effective position-limiting effect. The cover is connected to the housing via a snap-in block that engages the snap-in hole, offering a simple structure and easy assembly and disassembly. In the event of a microswitch failure, the operator can remove the cover to access the pressing member and movable conductive element for easy inspection and maintenance.

[0024] Optionally, a plurality of stop blocks capable of bending and deforming are provided on the extension piece, and a stop groove for the stop blocks to deform and extend into is provided on the shell.

[0025] By adopting the above technical solution, after the cover is snapped into place, the operator can push the stop block into the stop groove through the ejection device to prevent the cover from moving to the side away from the shell, thereby further enhancing the limiting effect of the cover on the pressing part.

[0026] Optionally, the cover plate is integrally formed with fixing plates which are arranged on both sides of the shell, the fixing plates and the extension plates are located on different sides of the shell, and an exhaust hole connected to the positioning groove is opened on the shell, and the exhaust hole can be blocked by the fixing plate or the extension plate.

[0027] By adopting this technical solution, when the pressing member moves toward the movable conductive member, excess gas in the housing is discharged through the exhaust hole, preventing the movement of the pressing member from being affected by the increased air pressure inside the housing. The fixed plate and the extension plate abut the circumference of the housing, not only hindering the horizontal movement of the cover relative to the housing, thereby further improving the stability of the cover, but also shielding the exhaust hole without affecting air flow, preventing external moisture from entering the housing through the exhaust hole, thereby achieving a good waterproof effect.

[0028] Optionally, the anti-slip component includes a flange integrally formed on the shell, and the flange abuts against a side of the positioning ring facing the opening of the positioning groove.

[0029] By adopting this technical solution, once the pressing member and the housing are assembled, the locating ring is blocked by the flange and is not easily removed from the positioning groove, which helps to improve the connection stability between the pressing member and the housing and the integrity of the micro switch. The flange is integrally formed on the housing, making it easy to manufacture and process.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. When the micro switch is closed, two circuits are formed. When one circuit fails, the other circuit can also achieve circuit conduction, thereby ensuring the normal use of the micro switch and strong practicality;

[0032] 2. The limiting structure can prevent the movable conductive part from rotating relative to the housing, so that the movable conductive part can be accurately aligned with the fixed conductive part, and the line transmission is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural diagram of Example 1.

[0034] Figure 2 It is a cross-sectional schematic diagram of Example 1.

[0035] Figure 3 It is a schematic diagram of the explosion of Example 1.

[0036] Figure 4 It is a structural schematic diagram of the fixed conductive part and the movable conductive part in Example 1.

[0037] Figure 5 It is a structural diagram of Example 2.

[0038] Figure 6 It is a cross-sectional schematic diagram of Example 2.

[0039] Figure 7 It is a schematic diagram of the explosion of Example 2.

[0040] Figure 8 It is a structural schematic diagram of the fixed conductive part and the movable conductive part in Example 2.

[0041] Description of reference numerals:

[0042] 1. Housing; 11. Positioning groove; 12. Snap-fit block; 13. Stop groove; 14. Exhaust hole; 2. Fixed conductive member; 21. First static contact piece; 22. Second static contact piece; 3. Movable conductive member; 31. First movable contact piece; 311. Connecting portion; 312. Movable portion; 313. Conductive portion; 32. Second movable contact piece; 4. Pressing member; 41. Positioning ring; 411. Pressing ring; 412. Second limiting groove; 42. Button; 421. Pressing portion; 422. Pushing portion; 43. Connecting ring; 5. Anti-slip member; 51. Cover plate; 511. Fixed piece; 52. Extension piece; 521. Snap-fit hole; 522. Stop block; 53. Flanging; 6. Limiting structure; 61. First limiting block; 62. First limiting groove; 63. Second limiting block. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-8 This application is described in further detail.

[0044] The embodiment of the present application discloses a dual-circuit micro switch.

[0045] Example 1

[0046] Reference Figure 1 、 Figure 2 The dual-circuit micro switch includes a housing 1, a fixed conductive member 2, a movable conductive member 3, and a pressing member 4 disposed on the housing 1. The fixed conductive member 2 and the movable conductive member 3 are all made of conductive materials. The pressing member 4 is used to drive the movable conductive member 3 toward the fixed conductive member 2 to complete the circuit.

[0047] Reference Figure 2 、 Figure 3 The pressing member 4 includes a positioning ring 41, a button 42 located inside the positioning ring 41, and a connecting ring 43 sealed between the button 42 and the positioning ring 41. The diameter of the connecting ring 43 gradually increases along the direction from the button 42 to the positioning ring 41. Specifically, the button 42 includes an integrally formed pressing portion 421 and a pushing portion 422. The pushing portion 422 is located on the side of the pressing portion 421 close to the fixed conductive member 2, and the diameter of the pushing portion 422 is smaller than the diameter of the pressing portion 421. One end of the connecting ring 43 is fixed at the transition position between the pressing portion 421 and the pushing portion 422, and the other end is fixed to the end of the positioning ring 41 close to the button 42.

[0048] Reference Figure 2 、 Figure 3 To improve the integrity and production efficiency of the pressing member 4, in this embodiment, the positioning ring 41, button 42, and connecting ring 43 are integrally molded. Furthermore, the pressing member 4 is preferably made of rubber, which imparts a certain degree of elastic deformation. When pressure is applied to the button 42, the connecting ring 43 deforms and generates a spring force that automatically resets the button 42 when the pressure is removed.

[0049] In other embodiments, the pressing member 4 can be formed by first separately forming the positioning ring 41, the button 42 and the connecting ring 43, and then connecting the above structures together by means of bonding or the like. Any method that can realize the positioning ring 41, the button 42 and the connecting ring 43 being connected into one body can be used; or other materials can be selected as the production raw materials of the pressing member 4, and any material that can realize the automatic reset of the pressing member 4 after deformation can be used.

[0050] Reference Figure 2 、 Figure 3 The housing 1 is provided with a positioning groove 11 with one side open. The movable conductive member 3 is located in the positioning groove 11. The circumferential side wall of the positioning ring 41 is integrally formed with a pressure ring 411. When the pressing member 4 is installed in the housing 1, the positioning ring 41 is embedded in the positioning groove 11, and the pressure ring 411 abuts against the side of the housing 1 facing the opening of the positioning groove 11.

[0051] Reference Figure 2 、 Figure 3In order to prevent the positioning ring 41 from falling out of the positioning groove 11, an anti-slip component 5 is provided on the shell 1. The anti-slip component 5 includes a cover plate 51 and several extension pieces 52 arranged on the side of the cover plate 51 facing the shell 1. The above-mentioned cover plate 51 is preferably a metal plate, and the extension pieces 52 are connected to the cover plate 51 by an integral molding method. In this embodiment, two extension pieces 52 are provided and are respectively arranged on opposite sides of the cover plate 51 to illustrate its structure. Each extension piece 52 is provided with two snap-in holes 521, and the opposite side walls of the shell 1 are respectively provided with several snap-in blocks 12. The number of snap-in blocks 12 and the number of snap-in holes 521 are equal and correspond one to one. When the cover plate 51 is connected to the shell 1, the pressure ring 411 is pressed against the shell 1 by the cover plate 51, and each snap-in block 12 is respectively snap-fitted with the corresponding snap-in hole 521, thereby realizing the detachable connection between the cover plate 51 and the shell 1.

[0052] Reference Figure 3 In order to further improve the connection strength between the cover plate 51 and the shell 1, a number of stop blocks 522 are integrally formed on the extension piece 52. The stop blocks 522 can bend and deform when under pressure. A stop groove 13 is provided on the shell 1 for the stop blocks 522 to deform and extend into. The stop groove 13 is closed on the side facing the opening of the positioning groove 11. After the cover plate 51 is snapped into place, the stop block 522 can be pushed into the stop groove 13 by the ejection device, so that the stop block 522 can be used to prevent the cover plate 51 from moving to the side away from the shell 1, and the cover plate 51 has high stability. It should be noted that the above-mentioned ejection device can be any one of an air cylinder, an oil cylinder and an electric push rod. Its structure belongs to the existing technology and is not the main protection point of this application, so it will not be described here.

[0053] Reference Figure 3 , a plurality of fixing plates 511 are integrally formed on the cover plate 51, and each fixing plate 511 is arranged on two opposite sides of the shell 1, and the fixing plates 511 are perpendicular to each other. In this embodiment, two fixing plates 511 are provided to illustrate its structure. In other embodiments, the fixing plates 511 can also be set to three, four or five or other numbers, as long as they can meet the requirement of being arranged on both sides of the shell 1. Furthermore, the fixing plates 511 and the extension plates 52 are located on different sides of the shell 1. For example, if the extension plates 52 are arranged in the front and rear directions of the shell 1, the fixing plates 511 should be arranged in the left and right directions of the shell 1. With such an arrangement, when the cover plate 51 is connected to the shell 1, the fixing plates 511 and the extension plates 52 can hinder the horizontal movement of the cover plate 51 relative to the shell 1, which is conducive to further improving the stability of the shell 1.

[0054] Reference Figure 3The housing 1 is provided with a plurality of exhaust holes 14 communicating with the positioning grooves 11. When the pressing member 4 is in operation, excess gas in the positioning grooves 11 is discharged through the exhaust holes 14, preventing the air pressure in the housing 1 from affecting the movement of the pressing member 4. To prevent moisture from outside the housing 1 from seeping into the exhaust holes 14, in this embodiment, each exhaust hole 14 is shielded by a fixing piece 511 or an extension piece 52. This prevents moisture from entering the housing 1 while ensuring exhaust, providing a high level of safety.

[0055] Reference Figure 3 、 Figure 4 The fixed conductive member 2 includes a plurality of first static contacts 21 and second static contacts 22. In this embodiment, three first static contacts 21 and three second static contacts 22 are provided, and the first static contacts 21 and the second static contacts 22 are distributed in an alternating manner, that is, one first static contact 21 is located between two second static contacts 22, and one second static contact 22 is located between two first static contacts 21. In other embodiments, the first static contact 21 and the second static contact 22 can also be designed to be other numbers according to needs. The shell 1 is integrally injection-molded on the outside of the first static contact 21 and the second static contact 22 to achieve a fixed connection between the first static contact 21 and the second static contact 22 and the shell 1. After molding, one end of each first static contact 21 and the second static contact 22 is located on the outside of the shell 1 to facilitate external connection of wires.

[0056] Reference Figure 4 The movable conductive member 3 includes a plurality of first movable contact pieces 31 and second movable contact pieces 32. In this embodiment, one first movable contact piece 31 and one second movable contact piece 32 are provided. Both have the same structure and are capable of elastic deformation. In other embodiments, the number or structure of the first movable contact pieces 31 and the second movable contact piece 32 can also be designed as needed.

[0057] Reference Figure 4 The first movable contact piece 31 and the second movable contact piece 32 each include a connecting portion 311, a movable portion 312 integrally formed with the connecting portion 311, and a plurality of conductive portions 313. The sum of the number of conductive portions 313 and movable portions 312 is equal to the number of first stationary contact pieces 21. The movable portion 312 is formed to extend from the connecting portion 311 to a side away from the fixed conductive member 2. When the micro switch is assembled, the positioning ring 41 presses against the connecting portion 311 and the conductive portion 313, and the push portion 422 is aligned with the movable portions 312 of the first movable contact piece 31 and the second movable contact piece 32. When the button 42 is pressed down, the movable portion 312 is deformed toward the fixed conductive member 2 under the force. The connecting portion 311 and the conductive portion 313 are not easily tilted due to the limitation of the positioning ring 41. In other embodiments, the positioning ring 41 may only press against the connecting portion 311 or the conductive portion 313. Any pressing method that can limit the movement of the connecting portion 311 and the conductive portion 313 is acceptable.

[0058] Reference Figure 4 Each conductive portion 313 of the first movable contact piece 31 abuts the adjacent first stationary contact piece 21, and the movable portion 312 can abut the adjacent first stationary contact piece 21 when under pressure, thereby establishing an electrical connection between the first movable contact piece 31 and the first stationary contact piece 21. Each conductive portion 313 of the second movable contact piece 32 abuts the adjacent second stationary contact piece 22, and the movable portion 312 can abut the adjacent second stationary contact piece 22 when under pressure, thereby establishing an electrical connection between the second movable contact piece 32 and the second stationary contact piece 22. This creates two independent circuits in the switch. If one circuit fails, the other circuit can still function, ensuring normal operation of the microswitch.

[0059] It should be noted that, in order to reduce the risk of the pressing member 4 being punctured by the sharp corners of the movable portion 312 , the edge of one end of the movable portion 312 facing the pressing member 4 may be rounded during production and processing.

[0060] Reference Figure 3 、 Figure 4 In order to improve the stability of the movable conductive part 3, a limiting structure 6 is provided between the housing 1 and the movable conductive part 3 to prevent the relative rotation of the two. The limiting structure 6 includes a first limiting block 61 and a first limiting groove 62 that are plugged together. In this embodiment, the first limiting block 61 is integrally formed on the movable conductive part 3, and the first limiting groove 62 is provided on the housing 1. One side of the first limiting groove 62 is provided with an opening for the first limiting block 61 to extend into, so as to facilitate the installation of the movable conductive part 3 in the housing 1. In other embodiments, it is also possible to choose to integrally provide the first limiting block 61 on the housing 1 and provide the first limiting groove 62 on the movable conductive part 3, or to provide the first limiting block 61 on both the housing 1 and the movable conductive part 3, and to provide the first limiting groove 62 corresponding to the above-mentioned first limiting block 61 on both the movable conductive part 3 and the housing 1.

[0061] The implementation principle of a dual-circuit microswitch in an embodiment of the present application is as follows: when the control circuit needs to be connected, the button 42 is pressed toward the side close to the movable conductive member 3. The movable portion 312 of the first movable contact piece 31 will deform to contact the adjacent first static contact piece 21, thereby achieving an electrical connection between the first movable contact piece 31 and the first static contact piece 21; the movable portion 312 of the second movable contact piece 32 will deform to contact the adjacent second static contact piece 22, thereby achieving an electrical connection between the second movable contact piece 32 and the second static contact piece 22. At this time, two circuits are formed in the microswitch, one of which is conductive along the first movable contact piece 31 and the first static contact piece 21, and the other is conductive along the second movable contact piece 32 and the second static contact piece 22. With this arrangement, even if one circuit fails, the other circuit can still achieve normal circuit conduction, thereby ensuring the normal use of the microswitch.

[0062] Example 2

[0063] Reference Figure 5 、 Figure 6 This embodiment differs from Example 1 in that the anti-slip feature 5 includes several flanges 53 integrally formed on the housing 1. Four flanges 53 are provided in this embodiment to illustrate its structure, with each flange 53 formed on a different sidewall of the housing 1. The thickness of the positioning ring 41 in this embodiment is greater than that of the positioning ring 41 in Example 1, and the sidewalls of the positioning ring 41 are not further provided with a pressure ring 411. When the microswitch is assembled, the flanges 53 directly abut the side of the positioning ring 41 facing the positioning groove 11, preventing the positioning ring 41 from slipping out of the positioning groove 11.

[0064] Reference Figure 6 、 Figure 7 The limiting structure 6 includes a plurality of second limiting blocks 63 integrally formed on the housing 1. In this embodiment, two second limiting blocks 63 are correspondingly provided for the first movable contact piece 31 and the second movable contact piece 32. Each second limiting block 63 respectively abuts against two sides of the first movable contact piece 31 and the second movable contact piece 32 (i.e., the side of the conductive portion 313 away from the connecting portion 311) to prevent the first movable contact piece 31 and the second movable contact piece 32 from rotating relative to the housing 1, which is conducive to the alignment of the movable conductive member 3 and the fixed conductive member 2, and stable line transmission.

[0065] Reference Figure 7 The positioning ring 41 is provided with second limiting grooves 412 , which are equal in number to and correspond to the second limiting blocks 63 . Each second limiting groove 412 can be inserted into a corresponding second limiting block 63 to further limit the rotation of the pressing member 4 relative to the housing 1 .

[0066] Reference Figure 8 In this embodiment, the first static contact pieces 21 and the second static contact pieces 22 are continuously distributed, that is, three first static contact pieces 21 are located on the same side, and three second static contact pieces 22 are located on the other side.

[0067] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A double-circuit micro switch, comprising a housing (1), a fixed conductive member (2) and a movable conductive member (3) arranged on the housing (1), and a pressing member (4) for driving the movable conductive member (3) to move toward the fixed conductive member (2), characterized in that: The fixed conductive member (2) includes a plurality of first static contact pieces (21) and a second static contact piece (22) fixedly connected to the housing (1); the movable conductive member (3) includes a plurality of first movable contact pieces (31) and a second movable contact piece (32) movably connected to the housing (1); when the pressing member (4) is in operation, the first movable contact piece (31) can contact the first static contact piece (21), and the second movable contact piece (32) can contact the second static contact piece (22), so as to form two independent circuits.

2. The dual-circuit micro switch according to claim 1, characterized in that: The first movable contact piece (31) includes a connecting portion (311), a movable portion (312) integrally formed with the connecting portion (311), and a plurality of conductive portions (313); the movable portion (312) is formed by extending from the connecting portion (311) toward a side away from the fixed conductive member (2); the second movable contact piece (32) also includes a connecting portion (311), a movable portion (312) integrally formed with the connecting portion (311), and a plurality of conductive portions (313); and both the first movable contact piece (31) and the second movable contact piece (32) are capable of generating elastic deformation; Each conductive portion (313) in the first movable contact piece (31) abuts against an adjacent first static contact piece (21), and the movable portion (312) can abut against the adjacent first static contact piece (21) when under pressure; each conductive portion (313) in the second movable contact piece (32) abuts against an adjacent second static contact piece (22), and the movable portion (312) can abut against the adjacent second static contact piece (22) when under pressure.

3. The dual-circuit micro switch according to claim 1, characterized in that: A limiting structure (6) is provided between the housing (1) and the movable conductive member (3) for preventing the relative rotation of the two.

4. The dual-circuit micro switch according to claim 3, characterized in that: The limiting structure (6) comprises a first limiting block (61) and a first limiting slot (62) that are plug-fitted together; the first limiting block (61) is arranged on the movable conductive part (3), and the first limiting slot (62) is provided on the housing (1); or the first limiting block (61) is arranged on the housing (1), and the first limiting slot (62) is provided on the movable conductive part (3).

5. The dual-circuit micro switch according to claim 3, characterized in that: The limiting structure (6) comprises at least two second limiting blocks (63) integrally arranged on the housing (1), the second limiting blocks (63) respectively abutting against two sides of the movable conductive member (3), and the pressing member (4) is provided with second limiting grooves (412) for the second limiting blocks (63) to extend into.

6. The dual-circuit micro switch according to claim 2, characterized in that: The pressing member (4) comprises a positioning ring (41), a button (42) located inside the positioning ring (41), and a connecting ring (43) that is sealed between the button (42) and the positioning ring (41) and can generate elastic deformation. The housing (1) is provided with a positioning groove (11) for the positioning ring (41) to extend into. The positioning ring (41) is pressed onto the connecting portion (311) and / or the conductive portion (313), and the button (42) is aligned with the movable portion (312). The housing (1) is provided with an anti-slip member (5) for preventing the positioning ring (41) from escaping from the positioning groove (11).

7. The dual-circuit micro switch according to claim 6, characterized in that: The anti-slip component (5) comprises a cover plate (51), a plurality of extension pieces (52) arranged on the side of the cover plate (51) facing the shell (1), a pressure ring (411) is integrally formed on the circumferential side wall of the positioning ring (41), the cover plate (51) is abutted against the side of the pressure ring (411) away from the shell (1), a plurality of snap-in holes (521) are provided on the extension piece (52), and the shell (1) is provided with snap-in blocks (12) of the same number and corresponding to the snap-in holes (521), and each of the snap-in blocks (12) is snap-fitted with the corresponding snap-in hole (521).

8. The dual-circuit micro switch according to claim 7, characterized in that: The extension piece (52) is provided with a plurality of stop blocks (522) capable of generating bending deformation, and the housing (1) is provided with a stop groove (13) for the stop blocks (522) to deform and extend into.

9. The dual-circuit micro switch according to claim 7, characterized in that: The cover plate (51) is integrally formed with fixing pieces (511) disposed on both sides of the shell (1); the fixing piece (511) and the extension piece (52) are located on different sides of the shell (1); an exhaust hole (14) communicating with the positioning groove (11) is provided on the shell (1); and the exhaust hole (14) can be blocked by the fixing piece (511) or the extension piece (52).

10. The dual-circuit micro switch according to claim 6, characterized in that: The anti-slip component (5) comprises a flange (53) integrally formed on the housing (1), and the flange (53) abuts against the side of the positioning ring (41) facing the opening of the positioning groove (11).

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