Hall brushless signal switch

Abstract

The utility model 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] Common signal switches on the market mostly use brushes for speed regulation, auxiliary switch on / off, and reversing 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. Utility Model Content

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

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

[0005] A Hall brushless signal switch, comprising:

[0006] case;

[0007] a circuit board, disposed in the housing;

[0008] a trigger, disposed outside the housing, having at least a first pull position and a second pull position, and capable of moving and switching between the first pull position and the second pull position; and when the trigger is in the first pull position, the switch is in an off state, and when the trigger is in the second pull 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 magnet D are respectively connected to the trigger, and the polarities of the magnets C and 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. Both the Hall element D and the Hall element E are latch-type Hall elements.

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

[0011] Optionally, a speed regulation unit is further 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 base and a magnet A and a magnet B arranged on the magnet mounting base, the magnet A and the magnet B are installed with opposite polarities, and the magnet mounting base 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 passed through the 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 reversing unit is further included, and the reversing unit includes:

[0016] A reversing drive component 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 reversing signal output module is arranged on the reversing mounting seat and cooperates with the circuit board.

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

[0020] The cam is secured to the bottom of the housing and has a locking plate which allows the locking plate to lock the cam in place and to lock the locking plate when the cam is locked.

[0021] Optionally, the shell includes a base and a cover that can be buckled together, a through hole for the push rod to pass through is provided at the connection between the base and the cover, a dust cover is provided on the push rod, and the dust cover is retractable, and a mounting lip is provided on the outer side of the through hole on the base and the cover, 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, this application includes at least one of the following beneficial technical effects:

[0023] 1. This application uses magnet C, magnet D, Hall element D and Hall element E. When the trigger is in the first position, one of the Hall element D and 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 position to the second 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, they can maintain output even if there is no magnetic field around them after being triggered, that is, they can help the switch remain closed. This application does not require the use of 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 on-off action, 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 position, linear Hall element C does not output a speed control signal. When the trigger switches from the first position to the second position, it drives the movable tailstock inward, which in turn drives the magnet mounting base, thereby driving magnets A and B inward. The distance between magnets A and B and linear Hall element C gradually changes, thereby gradually changing the output voltage of linear Hall element C, thereby facilitating the speed control function. This application does not require a brush structure to achieve switch speed control, and there is no need for contact with the circuit board during the speed control operation, thereby further reducing wear on 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 prompting 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 rotation of the entire machine and realize the commutation function. This application does not require the use of a brush structure to realize switch commutation, and there is no 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 This 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 of the auxiliary switching unit in the embodiment of the present application.

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

[0029] Figure 4 It is a schematic structural diagram 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 structural diagram of the reversing unit in the embodiment of the present application.

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

[0034] Figure 9 It is a schematic structural diagram of the magnet mounting base in the embodiment of the present application.

[0035] Figure 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] Figure 11 It is a schematic diagram of the structure of the reversing limit block in the embodiment of the present application.

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

[0038] Explanation of Reference Numerals: 1. Housing; 11. Guide groove; 12. Mounting shaft hole; 13. Reversing limit groove; 14. Base; 15. Cover; 16. Through hole; 17. Mounting lip; 18. Elastic reset assembly; 181. Spring column; 1811. Limiting 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. Reversing unit; 61. Reversing lever; 611. Mounting shaft; 612. Rotation limit protrusion; 62. Reversing limit block; 621. Rotation limit groove; 622. Reversing elastic member; 623. Ball; 624. Guide arc groove; 63. Reversing mounting seat; 631. Reversing protrusion; 64. Reversing 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 embodiment of the present application discloses a Hall brushless signal switch. Figure 1-2 A Hall brushless signal switch includes 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, 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 the off state, and when the trigger 3 is in the second trigger position, the switch is in the on state.

[0042] Reference Figure 2-4 An auxiliary on-off unit 4 is provided in the housing 1. 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 provided on the second board surface of the circuit board 2. Both the Hall element D43 and the Hall element E44 are latch-type Hall elements.

[0043] Reference Figure 5-6The end of the trigger 3 closer to the housing 1 is fixedly connected to the push rod 31 by plugging. The end of the push rod 31 farther 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 mounted side by side on the movable tailstock 32. A guide groove 11 is provided on the inner wall of the housing 1. The guide groove 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 groove 11. In this embodiment, in order to facilitate auxiliary on-off control of the switch, when the movable tailstock 32 slides to the outer end of the guide groove 11, the trigger 3 is in the first trigger position; when the movable tailstock 32 slides to the inner end of the guide groove 11, the trigger 3 is in the second trigger position.

[0044] When using this signal switch, when the trigger 3 is in the first position, one of the Hall elements D43 and E44 outputs a high level, while the other outputs a low level, thereby assisting in disconnecting the switch. As the trigger 3 switches from the first to the second position, it moves the magnets C41 and D42. During this process, one of the magnets C41 and D42 gradually approaches the Hall elements D43 and E44, while the other gradually moves away from them. This causes the output states of the Hall elements D43 and E44 to change. Furthermore, because the Hall elements D43 and E44 are latching Hall elements, once triggered, they maintain their output even in the absence of a magnetic field, effectively keeping the switch closed.

[0045] Reference Figure 5 and Figure 7 An elastic reset assembly 18 is provided within the housing 1. The elastic reset assembly 18 comprises a spring column 181 mounted within the housing 1 and a compression spring 182 sleeved on the spring column 181. One end of the spring column 181 is movably inserted through the end of the movable tailstock 32 away from the push rod 31, and the other end of the spring column 181 is fixed to 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 position to the second position by pressing the trigger 3. At the same time, the compression spring 182 is compressed to store energy. When the trigger 3 is released, the compression spring 182 releases the energy, pushing the trigger 3 to reset, thereby facilitating the switching of the trigger 3 from the second position to the first position.

[0046] Reference Figure 3 and Figure 8-9Housing 1 houses a speed control unit 5, which includes a linear Hall element C51 and a linear Hall element trigger assembly. Linear Hall element C51 is secured to the first surface of circuit board 2. The linear Hall element trigger assembly includes a magnet mount 52 and magnets A53 and B54 mounted side by side on magnet mount 52. Magnets A53 and B54 are mounted with opposite polarities. Magnet mount 52 is connected to the movable tailstock 32. In this embodiment, magnet A53 is located outward from 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 opened 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 opened 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 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 position to the second 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 Figure 10 The signal switch also includes a reversing unit 6, which comprises a movable reversing drive member; a reversing mounting seat 63 that slides horizontally within the housing 1 and is driven by the reversing drive member; and a reversing signal output module that cooperates with the reversing mounting seat 63 and the circuit board 2. The reversing signal output module includes a reversing magnet 64 mounted on the side wall of the reversing mounting seat 63, and Hall elements A 65 and B 66 fixed to the first surface of the circuit board 2 and cooperating 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 is provided on the upper part of one side of the housing 1 to match the mounting shaft portion 611. 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 is provided at one end of the reversing limit block 62 to match the rotation limit protrusion 612, 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 defines a mounting slot, into which a reversing elastic member 622 is mounted. A ball bearing 623 is disposed on the end of the reversing elastic member 622 away from the bottom wall of the mounting slot. Multiple reversing limit grooves 13 are defined on the inner sidewall of the housing 1. One end of the ball bearing 623 is located within the mounting slot, while the other end is embedded in one of the reversing limit grooves 13. When the reversing elastic member 622 is compressed, the ball bearing 623 can move from one of the reversing limit grooves 13 to another of the reversing limit grooves 13. A guide arc groove 624 is defined on the bottom surface of the reversing limit block 62. A reversing protrusion 631 is integrally formed on the side of the reversing mounting seat 63 proximate to the reversing limit block 62. The end of the reversing protrusion 631 away from the reversing mounting seat 63 is slidably disposed 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 using this signal switch, the reversing lever 61 generates different reversing signals depending on its left, center, or right position, thereby controlling the forward / reverse rotation of the entire machine. The reversing operation is as follows: When the reversing lever 61 is moved, it causes the reversing stop 62 to rotate. The reversing protrusion 631 is mounted within the guide arc groove 624 on the reversing stop 62, while the reversing mounting seat 63 is partially restricted in its freedom, limiting it to left and right movement. When the reversing lever 61 is moved to the right, the reversing magnet 64 faces Hall element B66. At this point, Hall element B66 outputs a signal, while Hall element A65 does not. When the reversing lever 61 is moved to the middle position, the reversing magnet 64 is located between Hall elements A65 and B66. At this point, neither Hall element A65 nor B66 outputs a signal. When the reversing lever 61 is moved to the left, the reversing magnet 64 faces Hall element A65. At this point, Hall element A65 outputs a signal, while Hall element B66 does not. In this way, moving the reversing lever 61 switches between the left, middle, and right reversing positions. At different reversing positions, Hall elements A65 and B66 provide different signal feedback combinations, allowing the switch to transmit forward / reverse signals to the entire device, achieving the reversing function.

[0052] Reference Figure 5-7 To facilitate installation of the signal switch's internal components and ensure dustproofing, the housing 1 includes a base 14 and a cover 15 that interlock. A through-hole 16 is defined at the junction of the base 14 and cover 15, through which the push rod 31 passes. A dust cover 311, designed as a bellows-like structure and offering excellent scalability, is positioned over the push rod 31. Mounting lips 17 are integrally formed on the base 14 and cover 15, located outside the through-hole 16. A mounting slot 312 is defined at the end of the push rod 31 near the trigger 3. One end of the dust cover 311 fits over the mounting lip 17, while the other end is retained within the mounting slot 312.

[0053] To sum up, the brushless Hall signal switch of the embodiment of the present application does not need to adopt a traditional brush structure when performing auxiliary on-off, speed regulation and reversing, and the auxiliary switch does not need to contact the circuit board 2 during the on-off, speed regulation and reversing 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 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 brushless Hall signal switch, characterized in that: include: Housing (1); A circuit board (2) is arranged in the housing (1); A trigger (3) is provided 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 the first surface of the circuit board (2), and the Hall element E (44) is arranged on the second surface of the circuit board (2). Both the Hall element D (43) and the Hall element E (44) are latch-type Hall elements.

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

4. The brushless Hall effect 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 polarities of the magnet A (53) and the magnet B (54) are installed in reverse order, and the magnet mounting seat (52) is connected to a movable tailstock (32).

5. The brushless Hall effect 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 provided on a side of the circuit board (2) 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 adapted to be connected with the mounting hole (521).

6. The brushless Hall effect switch according to claim 2, characterized in that: An elastic reset assembly (18) is provided in the housing (1), and the elastic reset assembly (18) comprises a spring column (181) provided 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). The other end of the spring column (181) is provided 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).

7. The brushless Hall effect switch according to claim 1, characterized in that: It also includes a reversing unit (6), the reversing unit (6) including: A reversing drive component 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 cooperates with the circuit board (2).

8. The brushless Hall effect 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 brushless Hall effect 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). The bottom eccentric area of ​​the mounting shaft (611) is provided with a plurality of rotation limit protrusions (612). One end of the reversing limit block (62) is provided with a rotation limit groove (621) adapted to 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 (623) is provided at the end of the reversing elastic member (622) away from the bottom wall of the mounting groove. The housing (1) is provided with 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 the reversing mounting seat (63) is provided with a reversing protrusion (631) on a side close to the reversing limit block (62), and the reversing protrusion (631) is slidably arranged in the guide arc groove (624) at one end away from the reversing mounting seat (63).

10. The brushless Hall effect switch according to claim 2, characterized in that: The shell (1) comprises a base (14) and a cover (15) that can be buckled together. 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 push rod (31). The dust cover (311) is retractable. 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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