Hall brushless signal switch

Abstract

The invention relates to a Hall brushless signal switch, and belongs to the technical field of signal switches. The circuit board is arranged in the shell; the trigger is arranged on the outer side of the shell, at least provided with a first pulling position and a second pulling position and capable of moving and switching between the first pulling position and the second pulling position, when the trigger is located at the first pulling position, the switch is in an off state, and when the trigger is located at the second pulling position, the switch is in an on state; the auxiliary on-off unit comprises a magnet C, a magnet D, a Hall element D and a Hall element E. The magnet C and the magnet D are respectively connected with the trigger, the polarity of the magnet C and the polarity of the magnet D are installed in opposite directions, the Hall element D is arranged on the first board face of the circuit board, and the Hall element E is arranged on the second board face of the circuit board. The Hall element D and the Hall element E are latch type Hall elements. Abrasion of the circuit board in use can be reduced, and the service life of the switch can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of signal switches, and in particular to a Hall brushless signal switch. Background Art

[0002] The common signal switches on the market mostly use brushes for speed regulation, auxiliary switch on / off, and commutation parts, and the brushes need to be in contact with the circuit board. During the switching process, there is mechanical friction between the brushes and the circuit board, which is prone to wear and tear, thereby affecting the service life of the signal switch. Summary of the invention

[0003] In order to reduce wear and extend service life, the present application provides a brushless Hall signal switch.

[0004] The present application provides a Hall brushless signal switch, which adopts the following technical solution:

[0005] A Hall brushless signal switch, comprising:

[0006] case;

[0007] A circuit board is arranged in the housing;

[0008] The trigger is arranged outside the housing, has at least a first trigger position and a second trigger position, and can be moved and switched between the first trigger position and the second trigger position. When the trigger is in the first trigger position, the switch is in an off state, and when the trigger is in the second trigger position, the switch is in an on state.

[0009] The auxiliary on-off unit includes a magnet C, a magnet D, a Hall element D and a Hall element E. The magnet C and the magnet D are respectively connected to the trigger, and the polarities of the magnet C and the magnet D are installed in reverse. The Hall element D is arranged on the first board surface of the circuit board, and the Hall element E is arranged on the second board surface of the circuit board. The Hall element D and the Hall element E are both latch-type Hall elements.

[0010] Optionally, a push rod is provided at one end of the trigger close to the housing, a movable tail stock is provided at one end of the push rod located inside the housing, and the magnet C and the magnet D are arranged side by side on the movable tail stock.

[0011] Optionally, a speed regulating unit is also included, which includes a linear Hall element C and a linear Hall element trigger component. The linear Hall element C is arranged on the first board surface of the circuit board, and the linear Hall element trigger component is connected to the movable tailstock.

[0012] Optionally, the linear Hall element trigger assembly includes a magnet mounting seat and a magnet A and a magnet B arranged on the magnet mounting seat, the magnet A and the magnet B are installed with opposite polarities, and the magnet mounting seat is connected to the movable tailstock.

[0013] Optionally, a mounting protrusion is provided on the movable tailstock, an avoidance hole is opened on the circuit board, the magnet mounting seat is arranged on the side of the circuit board away from the movable tailstock, a mounting hole is provided on the magnet mounting seat, and the mounting protrusion passes through the avoidance hole and is adapted to be connected with the mounting hole.

[0014] Optionally, an elastic reset component is provided in the shell, and the elastic reset component includes a spring column provided in the shell and a compression spring sleeved on the spring column, one end of the spring column is movably inserted into an end of the movable tail stock away from the push rod, and the other end of the spring column is provided with a limiting portion, one end of the compression spring abuts against the limiting portion, and the other end abuts against the movable tail stock.

[0015] Optionally, a switching unit is further included, wherein the switching unit includes:

[0016] A reversing drive member that can be toggled;

[0017] A reversing mounting seat disposed in the housing and driven to move by the reversing driving member;

[0018] And a commutation signal output module which is arranged on the commutation mounting seat and cooperates with the circuit board.

[0019] Optionally, the commutation signal output module includes a commutation magnet disposed on a commutation mounting seat, and a Hall element A and a Hall element B disposed on the circuit board and cooperating with the commutation magnet.

[0020] Optionally, the reversing driving component includes a reversing lever and a reversing limit block, the reversing lever is rotatably mounted on the shell through an installing shaft portion, a plurality of rotation limit protrusions are provided in an eccentric area on the bottom surface of the installing shaft portion, one end of the reversing limit block is provided with a rotation limit groove matched with the rotation limit protrusion, the other end of the reversing limit block is provided with a installing groove, a reversing elastic member is provided in the installing groove, a ball is provided at one end of the reversing elastic member away from the bottom wall of the installing groove, a plurality of reversing limit grooves are provided on the shell, one end of the ball is located in the installing groove, and the other end is embedded in one of the reversing limit grooves, and when the reversing elastic member is compressed, the ball can move from one of the reversing limit grooves to another reversing limit groove, the reversing limit block is provided with a guide arc groove, and a reversing protrusion is provided on the reversing mounting seat on a side close to the reversing limit block, and the end of the reversing protrusion away from the reversing mounting seat can be slidably arranged in the guide arc groove.

[0021] Optionally, the shell includes a base and a cover body that can be interlocked, and a through hole for the push rod to pass through is provided at the connection between the base and the cover body. The push rod is provided with a dust cover, and the dust cover is retractable. The base and the cover body are provided with a mounting lip on the outer side of the through hole, one end of the dust cover is mounted on the mounting lip, and the other end is connected to the push rod.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The present application uses magnet C, magnet D, Hall element D and Hall element E. When the trigger is in the first pull position, one of the Hall element D and the Hall element E outputs a high level and the other outputs a low level, thereby realizing the function of disconnecting the auxiliary switch. When the trigger moves and switches from the first pull position to the second pull position, it drives magnet C and magnet D to move. During this process, one of magnet C and magnet D gradually approaches Hall element D and Hall element E, and the other gradually moves away from Hall element D and Hall element E, thereby changing the output state of Hall element D and Hall element E. Since Hall element D and Hall element E are latch-type Hall elements, after being triggered, they can maintain output even if there is no magnetic field around them, that is, they can help the switch remain in a closed state. The present application does not need to use a brush structure to assist the switch in turning on and off, and the auxiliary switch does not need to contact the circuit board during the action of turning on and off, thereby reducing the wear of the circuit board and helping to extend the service life of the switch.

[0024] 2. Through the arrangement of linear Hall element C, magnet A and magnet B, when the trigger is in the first pull position, linear Hall element C does not output a speed control signal; when the trigger switches from the first pull position to the second pull position, the movable tailstock is driven to move inward, and the movement of the movable tailstock drives the magnet mounting seat to move, thereby driving magnet A and magnet B to move inward, and the distance between magnet A and magnet B and linear Hall element C gradually changes, thereby causing the output voltage of linear Hall element C to gradually change, thereby facilitating the realization of the speed control function. This application does not require the use of a brush structure to realize switch speed control, and does not require contact with the circuit board during the speed control action, thereby further reducing the wear of the circuit board and helping to further extend the service life of the switch.

[0025] 3. Through the arrangement of the commutation drive component, the commutation mounting seat, the commutation magnet, the Hall element A and the Hall element B, the commutation drive component can drive the commutation mounting seat to switch between different positions. The movement of the commutation mounting seat drives the movement of the commutation magnet, thereby changing the distance between the commutation magnet and the Hall element A and the Hall element B, respectively, thereby causing the Hall element A or the Hall element B to output / not output a signal. By providing different output signals, it is beneficial for the switch to control the forward / reverse of the whole machine and realize the commutation function. The present application does not need to use a brush structure to realize switch commutation, and does not need to contact the circuit board during the commutation action, thereby further reducing the wear of the circuit board and helping to further extend the service life of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a Hall brushless signal switch according to an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view showing the auxiliary switching unit in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the first board surface of the circuit board in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the second board surface of the circuit board in the embodiment of the present application.

[0030] Figure 5 It is an exploded view showing the connection relationship among the trigger, push rod, movable tailstock and spring return assembly in the embodiment of the present application.

[0031] Figure 6 It is an exploded view of the shell in the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of the structure of the reversing unit in the embodiment of the present application.

[0033] Figure 8 It is a structural schematic diagram reflecting the positional relationship among the circuit board, the movable tailstock and the magnet mounting seat in the embodiment of the present application.

[0034] Fig. 9 It is a schematic diagram of the structure of the magnet mounting seat in the embodiment of the present application.

[0035] Fig.10 It is an exploded view showing the connection relationship between the reversing lever, the reversing limit block and the reversing mounting seat in the embodiment of the present application.

[0036] Fig.11 It is a schematic diagram of the structure of the reversing limit block in the embodiment of the present application.

[0037] Fig.12It is a top view of an embodiment of the present application.

[0038] Description of reference numerals: 1. housing; 11. guide slide; 12. mounting shaft hole; 13. reversing limit groove; 14. base; 15. cover; 16. perforation; 17. mounting lip; 18. elastic reset assembly; 181. spring column; 1811. limit portion; 182. compression spring; 2. circuit board; 21. avoidance hole; 3. trigger; 31. push rod; 311. dust cover; 312. mounting slot; 32. movable tailstock; 321. mounting protrusion; 4. auxiliary on-off unit; 41. magnet C; 42. magnet D; 43. Hall element D; 44. Hall element E; 5. Speed ​​control unit; 51. Linear Hall element C; 52. Magnet mounting seat; 521. Mounting hole; 53. Magnet A; 54. Magnet B; 6. Commutation unit; 61. Commutation lever; 611. Mounting shaft; 612. Rotation limit protrusion; 62. Commutation limit block; 621. Rotation limit groove; 622. Commutation elastic member; 623. Ball; 624. Guide arc groove; 63. Commutation mounting seat; 631. Commutation protrusion; 64. Commutation magnet; 65. Hall element A; 66. Hall element B; 67. Self-tapping screw. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-12 , further details of this application are given.

[0040] Example:

[0041] The present application embodiment discloses a Hall brushless signal switch. Figure 1-2 A Hall brushless signal switch comprises a housing 1, a circuit board 2 and a trigger 3, wherein the circuit board 2 is fixed on the inner side of the housing 1; the trigger 3 is arranged on the outer side of the housing 1, and has at least a first trigger position and a second trigger position, and can be moved and switched between the first trigger position and the second trigger position, and when the trigger 3 is in the first trigger position, the switch is in an off state, and when the trigger 3 is in the second trigger position, the switch is in an on state.

[0042] Reference Figure 2-4 An auxiliary on-off unit 4 is provided in the housing 1, and the auxiliary on-off unit 4 includes a magnet C41, a magnet D42, a Hall element D43 and a Hall element E44. The magnet C41 and the magnet D42 are respectively connected to the trigger 3, and the polarities of the magnet C41 and the magnet D42 are installed in reverse. The Hall element D43 is fixed to the first board surface of the circuit board 2, and the Hall element E44 is arranged on the second board surface of the circuit board 2. The Hall element D43 and the Hall element E44 are both latch-type Hall elements.

[0043] Reference Figure 5-6The end of the trigger 3 close to the housing 1 is fixedly connected to the push rod 31 by plugging, and the end of the push rod 31 away from the trigger 3 penetrates into the housing 1 and is fixedly connected to the movable tailstock 32. The magnet C41 and the magnet D42 are installed side by side on the movable tailstock 32. A guide slot 11 is provided on the inner wall of the housing 1. The guide slot 11 is arranged in the horizontal direction to guide the movement of the movable tailstock 32. The back of the movable tailstock 32 is slidably arranged in the guide slot 11. In this embodiment, in order to facilitate the auxiliary on-off control of the switch, when the movable tailstock 32 slides to the outer end of the guide slot 11, the trigger 3 is located in the first pull position; when the movable tailstock 32 slides to the inner end of the guide slot 11, the trigger 3 is located in the second pull position.

[0044] When the signal switch is used, when the trigger 3 is in the first pull position, one of the Hall element D43 and the Hall element E44 outputs a high level, and the other outputs a low level, realizing the function of disconnecting the auxiliary switch. When the trigger 3 moves and switches from the first pull position to the second pull position, it drives the magnet C41 and the magnet D42 to move. During this process, one of the magnets C41 and D42 gradually approaches the Hall element D43 and the Hall element E44, and the other gradually moves away from the Hall element D43 and the Hall element E44, thereby changing the output state of the Hall element D43 and the Hall element E44; and because the Hall element D43 and the Hall element E44 are latch-type Hall elements, after being triggered, they can maintain output even if there is no magnetic field around them, that is, they can help the switch remain in a closed state.

[0045] Reference Figure 5 and Figure 7 The housing 1 is provided with an elastic reset assembly 18, which includes a spring column 181 installed in the housing 1 and a compression spring 182 sleeved on the spring column 181. One end of the spring column 181 is movably inserted into the end of the movable tailstock 32 away from the push rod 31, and the other end of the spring column 181 is fixed with a limiting portion 1811. One end of the compression spring 182 abuts against the limiting portion 1811, and the other end abuts against the movable tailstock 32. In this way, the trigger 3 can be switched from the first pull position to the second pull position by pressing the trigger 3. At the same time, the compression spring 182 is compressed to store energy. After the trigger 3 is released, the compression spring 182 releases energy and pushes the trigger 3 to reset, thereby facilitating the trigger 3 to switch from the second pull position to the first pull position.

[0046] Reference Figure 3 and Figure 8-9The housing 1 is provided with a speed regulating unit 5, which includes a linear Hall element C51 and a linear Hall element trigger assembly. The linear Hall element C51 is fixed to the first board surface of the circuit board 2. The linear Hall element trigger assembly includes a magnet mounting seat 52 and a magnet A53 and a magnet B54 mounted side by side on the magnet mounting seat 52. The polarities of the magnet A53 and the magnet B54 are reversely mounted. The magnet mounting seat 52 is connected to the movable tailstock 32. In this embodiment, the magnet A53 is located in the outer direction of the magnet B54.

[0047] Reference Figure 7-9 A mounting protrusion 321 is integrally formed on the side wall of the movable tailstock 32, an avoidance hole 21 is provided on the circuit board 2, the avoidance hole 11 is strip-shaped and arranged in the horizontal direction, the magnet mounting seat 52 is arranged on the side of the circuit board 2 away from the movable tailstock 32, and a mounting hole 521 is provided on the magnet mounting seat 52. The mounting protrusion 321 passes through the avoidance hole 21 and is adapted to be connected with the mounting hole 521.

[0048] When using this signal switch, when the trigger 3 is in the first pull position, the magnet B54 is facing the linear Hall element C51, and the linear Hall element C51 does not output a speed control signal at this time; when the trigger 3 moves and switches from the first pull position to the second pull position, it drives the movable tailstock 32 to move inward, and the movement of the movable tailstock 32 drives the magnet mounting seat 52 to move, thereby driving the magnet A53 and the magnet B54 to move inward, and the distance between the magnet A53 and the magnet B54 and the linear Hall element C51 gradually changes, thereby causing the output voltage of the linear Hall element C51 to gradually change, thereby facilitating the realization of the speed control function.

[0049] Reference Figure 7-8 and Fig.10 The signal switch also includes a reversing unit 6, which includes: a reversing drive component that can be toggled; a reversing mounting seat 63 that is slidably arranged in the housing 1 along the horizontal direction and is driven by the reversing drive component to move; and a reversing signal output module that is arranged on the reversing mounting seat 63 and cooperates with the circuit board 2. The reversing signal output module includes a reversing magnet 64 installed on the side wall of the reversing mounting seat 63, and a Hall element A65 and a Hall element B66 that are fixed on the first board surface of the circuit board 2 and cooperate with the reversing magnet 64.

[0050] Reference Figure 6-8 and Figure 10-12The reversing drive component includes a reversing lever 61 and a reversing limit block 62. A mounting shaft portion 611 is integrally formed at the bottom of one end of the reversing lever 61. The reversing lever 61 is rotatably mounted on the housing 1 through the mounting shaft portion 611. A mounting shaft hole 12 matching the mounting shaft portion 611 is provided on the upper part of one side of the housing 1. A plurality of rotation limit protrusions 612 are fixed to the eccentric area of ​​the bottom surface of the mounting shaft portion 611. A rotation limit groove 621 matching the rotation limit protrusion 612 is provided at one end of the reversing limit block 62, and is connected in series with the mounting shaft portion 611 through a self-tapping screw 67 and then rotatably connected to the housing 1 respectively. The other end of the reversing limit block 62 is provided with a mounting groove, in which a reversing elastic member 622 is installed, and a ball 623 is provided at one end of the reversing elastic member 622 away from the bottom wall of the mounting groove. A plurality of reversing limit grooves 13 are provided on the inner side wall of the housing 1, one end of the ball 623 is located in the mounting groove, and the other end is embedded in one of the reversing limit grooves 13, and when the reversing elastic member 622 is compressed, the ball 623 can move from one of the reversing limit grooves 13 to another reversing limit groove 13. A guide arc groove 624 is provided on the bottom surface of the reversing limit block 62, and a reversing protrusion 631 is integrally formed on one side of the reversing mounting seat 63 close to the reversing limit block 62, and the end of the reversing protrusion 631 away from the reversing mounting seat 63 is slidably arranged in the guide arc groove 624. In this embodiment, two rotation limiting protrusions 612 are provided; the reversing elastic member 622 is a compression spring; and three reversing limiting grooves 13 are provided, corresponding to the three reversing positions of the signal switch.

[0051] When the signal switch is used, the function of the reversing lever 61 is to make the switch give different reversing signals through its different positions of left, middle and right to control the forward / reverse rotation of the whole machine. The specific operation of reversing is as follows: when the reversing lever 61 is turned, the reversing limit block 62 is driven to rotate, and the reversing protrusion 631 is installed in the guide arc groove 624 on the reversing limit block 62, while the reversing mounting seat 63 is partially restricted in freedom and can only move left and right. When the reversing lever 61 is turned to the right position, the reversing magnet 64 faces the Hall element B66. At this time, the Hall element B66 outputs a signal, and the Hall element A65 does not output a signal; when the reversing lever 61 is turned to the middle position, the reversing magnet 64 is located between the Hall element A65 and the Hall element B66. At this time, the Hall element A65 and the Hall element B66 do not output a signal; when the reversing lever 61 is turned to the left position, the reversing magnet 64 faces the Hall element A65. At this time, the Hall element A65 outputs a signal, and the Hall element B66 does not output a signal. In this way, the reversing lever 61 is turned to switch between the left, middle, and right reversing positions, and at different reversing positions, the Hall element A65 and the Hall element B66 give different signal feedback combinations, so that the switch can transmit the forward / reverse signal to the whole machine to realize the reversing function.

[0052] Reference Figure 5-7 In order to facilitate the installation of the internal components of the signal switch and ensure the dustproof effect of the signal switch, the housing 1 includes a base 14 and a cover 15 that can be interlocked. A through hole 16 for the push rod 31 to pass through is provided at the connection between the base 14 and the cover 15. A dust cover 311 is provided on the outside of the push rod 31. The dust cover 311 is arranged in a bellows-shaped structure and has good retractability. A mounting lip 17 is integrally formed on the outside of the base 14 and the cover 15 at the through hole 16. A mounting slot 312 is provided at one end of the push rod 31 close to the trigger 3. One end of the dust cover 311 is sleeved on the mounting lip 17, and the other end is clamped in the mounting slot 312.

[0053] To sum up, a Hall brushless signal switch in an embodiment of the present application does not need to adopt a traditional brush structure when performing auxiliary on-off, speed regulation and commutation, and the auxiliary switch does not need to contact the circuit board 2 during the on-off, speed regulation and commutation actions, thereby reducing the wear of the circuit board 2 and helping to extend the service life of the switch.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A brushless Hall signal switch, characterized in that: include: Housing (1); A circuit board (2) is arranged in the housing (1); The trigger (3) is arranged outside the housing (1), has at least a first trigger position and a second trigger position, and can be moved and switched between the first trigger position and the second trigger position; when the trigger (3) is in the first trigger position, the switch is in an off state, and when the trigger (3) is in the second trigger position, the switch is in an on state; The auxiliary on-off unit (4) comprises a magnet C (41), a magnet D (42), a Hall element D (43) and a Hall element E (44); the magnet C (41) and the magnet D (42) are respectively connected to the trigger (3), and the polarities of the magnet C (41) and the magnet D (42) are installed in reverse order; the Hall element D (43) is arranged on a first board surface of the circuit board (2), and the Hall element E (44) is arranged on a second board surface of the circuit board (2); and the Hall element D (43) and the Hall element E (44) are both latch-type Hall elements.

2. The Hall brushless signal switch according to claim 1, characterized in that: A push rod (31) is provided at one end of the trigger (3) close to the housing (1), and a movable tailstock (32) is provided at one end of the push rod (31) located inside the housing (1). The magnet C (41) and the magnet D (42) are arranged side by side on the movable tailstock (32).

3. The Hall brushless signal switch according to claim 2, characterized in that: It also includes a speed regulating unit (5), the speed regulating unit (5) including a linear Hall element C (51) and a linear Hall element triggering component, the linear Hall element C (51) is arranged on the first board surface of the circuit board (2), and the linear Hall element triggering component is connected to the movable tailstock (32).

4. The Hall brushless signal switch according to claim 3, characterized in that: The linear Hall element trigger assembly comprises a magnet mounting seat (52) and a magnet A (53) and a magnet B (54) arranged on the magnet mounting seat (52), wherein the magnet A (53) and the magnet B (54) are installed with opposite polarities, and the magnet mounting seat (52) is connected to a movable tailstock (32).

5. The Hall brushless signal switch according to claim 4, characterized in that: The movable tailstock (32) is provided with a mounting protrusion (321), the circuit board (2) is provided with an avoidance hole (21), the magnet mounting seat (52) is arranged on a side of the circuit board (1) away from the movable tailstock (32), the magnet mounting seat (52) is provided with a mounting hole (521), and the mounting protrusion (321) passes through the avoidance hole (21) and is adaptively connected to the mounting hole (521).

6. The Hall brushless signal switch according to claim 2, characterized in that: An elastic reset assembly (18) is arranged in the housing (1), and the elastic reset assembly (18) comprises a spring column (181) arranged in the housing (1) and a compression spring (182) sleeved on the spring column (181), one end of the spring column (181) is movably inserted into an end of the movable tailstock (32) away from the push rod (31), and the other end of the spring column (181) is provided with a limiting portion (1811), one end of the compression spring (182) is in contact with the limiting portion (1811), and the other end is in contact with the movable tailstock (32).

7. The Hall brushless signal switch according to claim 1, characterized in that: It also includes a reversing unit (6), the reversing unit (6) comprising: A reversing drive member that can be toggled; A reversing mounting seat (63) disposed in the housing (1) and driven to move by the reversing driving component; And a reversing signal output module which is arranged on the reversing mounting seat (63) and on the circuit board (2) and cooperates with each other.

8. The brushless Hall signal switch according to claim 7, characterized in that: The commutation signal output module comprises a commutation magnet (64) arranged on a commutation mounting seat (63), and a Hall element A (65) and a Hall element B (66) arranged on the circuit board (2) and cooperating with the commutation magnet (64).

9. The Hall brushless signal switch according to claim 7, characterized in that: The reversing drive component comprises a reversing lever (61) and a reversing limit block (62); the reversing lever (61) is rotatably mounted on the housing (1) via a mounting shaft (611); a plurality of rotation limit protrusions (612) are provided in an eccentric region of the bottom surface of the mounting shaft (611); one end of the reversing limit block (62) is provided with a rotation limit groove (621) matched with the rotation limit protrusion (612); the other end of the reversing limit block (62) is provided with a mounting groove; a reversing elastic member (622) is provided in the mounting groove; a ball bearing (623) is provided at one end of the reversing elastic member (622) away from the bottom wall of the mounting groove; and a There are a plurality of reversing limit grooves (13), one end of the ball (623) is located in the mounting groove, and the other end is embedded in one of the reversing limit grooves (13), and when the reversing elastic member (622) is compressed, the ball (623) can move from one of the reversing limit grooves (13) to another reversing limit groove (13), the reversing limit block (62) is provided with a guide arc groove (624), and a reversing protrusion (631) is provided on a side of the reversing mounting seat (63) close to the reversing limit block (62), and the end of the reversing protrusion (631) away from the reversing mounting seat (63) is slidably arranged in the guide arc groove (624).

10. The Hall brushless signal switch according to claim 2, characterized in that: The shell (1) comprises a base (14) and a cover (15) which can be interlocked, a through hole (16) for a push rod (31) to pass through is provided at the connection between the base (14) and the cover (15), a dust cover (311) is provided on the push rod (31), and the dust cover (311) is retractable, and a mounting lip (17) is provided on the outer side of the through hole (16) on the base (14) and the cover (15), one end of the dust cover (311) is mounted on the mounting lip (17), and the other end is connected to the push rod (31).

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