Large-current Hall signal brushless switch

Abstract

The invention discloses a large-current Hall signal brushless switch, and relates to the technical field of switches, the large-current Hall signal brushless switch comprises an upper cover and a base shell, the base shell is closed by the upper cover, a push rod mounting groove is formed between one side of the upper cover and one side of the base shell, a push piece is inserted into the push rod mounting groove, and after a trigger is pressed, the push piece is inserted into the push rod mounting groove. One end of the pushing piece drives the springboard to move, the other end of the pushing piece drives the conduction contact piece to move, a parallel switch closed loop is formed, the current passing through the silver contact is reduced, and a steering assembly is arranged on the top side of the interior of the base shell. According to the large-current Hall signal brushless switch, a silver contact conduction mode is used in a main loop part, in order to reduce the electrocorrosion loss of a silver layer in the middle of a silver contact, a magnet is additionally arranged, electric arcs generated in the switch-on process are led to the edge position of the silver contact, after the silver contact is closed, a trigger is continuously pushed, and another parallel loop is conducted, so that the large-current Hall signal brushless switch is switched on. The loop can share the current passing through the silver contact part, so that the contact is further protected, and internal resistance heating in the use of the switch is reduced.

Description

Technical Field

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

[0002] When the main circuit of the switch is closed, the silver contacts will be worn out, resulting in an increase in the contact resistance of the switch, which in turn increases the heat generated. Large current switches often generate severe heat. Most common switches on the market use brushes for speed regulation and commutation. The brushes are in contact with the circuit board. During the switching process, the brushes and the circuit board will wear out, affecting the life of the switch. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present application provides a large current Hall signal brushless switch, which reduces the heating problem of the main circuit and solves the life problem caused by the use of brushes in the speed regulation and commutation parts.

[0004] To achieve the above objectives, the present application is implemented through the following technical solutions: a high-current Hall signal brushless switch, comprising an upper cover and a base shell, the upper cover closes the base shell, and a push rod mounting groove is formed between the upper cover and one side of the base shell, a push piece is inserted in the push rod mounting groove, one end of the push piece is connected to a trigger, a steering assembly is arranged at the top side of the interior of the base shell, and a reversing assembly for driving the steering assembly to move is also arranged on the upper part of the base shell, a contact assembly is arranged at the lower part of the interior of the base shell, and a speed regulating Hall element trigger assembly is installed on the push piece inside the base shell, a magnet mounting mechanism is installed at the front of the contact assembly in the base shell, and a circuit board is installed at the front of the magnet mounting mechanism in the base shell.

[0005] The steering assembly includes a steering limit block, a commutation block guide rib matched with the steering limit block is arranged at the upper part of the inner wall of the base shell, the steering limit block slides on the commutation block guide rib, and an empty groove is arranged on one side of the steering limit block, a reversing spring is installed on the inner wall of the empty groove, one end of the reversing spring extends out of the empty groove and is bonded with a steel ball, the inner side wall of the base shell is provided with a reversing limit groove corresponding to the steel ball, the steel ball is clamped in the reversing limit groove, one side of the steering limit block is provided with an arc groove, a cylindrical protrusion is slidably arranged in the arc groove, one end of the cylindrical protrusion extends out of the arc groove and is connected with the commutation block, and a cylindrical magnet A is arranged on the front of the commutation block. By toggling the reversing assembly, the position of the commutation block is adjusted to be in different positions of left, middle and right, so that the switch gives different signals to control the forward and reverse rotation of the whole machine.

[0006] The push piece includes a push rod passing through a push rod mounting groove, an outer sleeve of the push rod is provided with a dust ring, and one end of the push rod is provided with a dust ring mounting groove matched with the dust ring, so that the dust ring is arranged on the push rod through the dust ring mounting groove clamping sleeve, and the front of the push rod is located in the base shell and is provided with a waist-shaped protrusion, a fulcrum spring penetrates the upper part of one end of the push rod, and the upper and lower ends of the fulcrum spring are connected to the fulcrum, a circular hole is provided on the end surface of the push rod away from the dust ring, a spring column is inserted in the hole, and the outer sleeve of the spring column is provided with a main spring, and the end of the spring column away from the push rod is connected to the inner wall of the base shell.

[0007] Preferably, the speed regulating Hall element trigger assembly includes a magnet mounting base, a cylindrical magnet B and a cylindrical magnet C are arranged on the front of the magnet mounting base, and a waist-shaped mounting hole corresponding to the waist-shaped protrusion is also arranged on the front of the magnet mounting base.

[0008] Preferably, the inner wall of the base shell is provided with a push rod guide groove, and the back side of the push rod slides through the push rod guide groove.

[0009] Preferably, the reversing assembly includes a reversing lever, a cylindrical surface is provided at the lower part of one end of the reversing lever, a reversing lever mounting circular hole matched with the cylindrical surface is provided at the upper part of one side of the base shell, one end of the cylindrical surface passes through the reversing lever mounting circular hole, and rotation limit protrusions are provided at both edges of one end of the cylindrical surface, and a rotation limit groove matched with the rotation limit protrusion is provided at one end of the steering limit block, and the two rotation limit protrusions on the cylindrical surface are arranged in the rotation limit groove and can rotate therein, and are fixed by self-tapping screws.

[0010] Preferably, the contact assembly includes a contact piece B and a contact piece A, a bayonet is provided on the upper side of the contact piece A, a springboard is movably connected in the bayonet, and a contact piece C is connected to one side of the contact piece A at a position below the springboard, the back of the contact piece C is attached to the inner wall of the base shell, and a conducting contact piece is provided on the inner top side of the upper end of the contact piece C, and the contact assembly also includes a springboard support block arranged on the inner lower side of the base shell, and one end of the springboard is overlapped on the springboard support block.

[0011] Preferably, the contact piece B comprises a contact plate, a contact point corresponding to the springboard is arranged on one side of the upper end of the contact plate, and an L-shaped piece is arranged on the upper end of the contact plate, and the L-shaped piece is attached to the inner wall of the base shell.

[0012] Preferably, two contact piece mounting slots are provided at the bottom of the upper cover, and the contact plate and the contact piece A pass through the two contact piece mounting slots respectively.

[0013] Preferably, the magnet mounting mechanism comprises a square magnet mounting box, and a square magnet is mounted inside the square magnet mounting box.

[0014] Preferably, a switch type Hall element A, a switch type Hall element B and a linear Hall element C are respectively provided on one side of the circuit board, and a strip groove is also provided on one side of the circuit board.

[0015] The present application provides a high current Hall signal brushless switch, which has the following advantages compared with the prior art:

[0016] Beneficial effects:

[0017] This high-current Hall signal brushless switch uses silver contacts to conduct in the main circuit. In order to reduce the loss of the silver layer caused by electrocorrosion at the moment of contact of the silver contacts, a magnet is used to direct the arc generated during the switch-on process to the edge of the silver contacts to reduce material splashing loss. When the silver contacts are closed, continue to push the trigger, and another parallel circuit will be turned on. This circuit will share the current passing through the silver contacts to further protect the contacts. The speed regulation and commutation parts of this switch use Hall elements and magnets. Compared with brushes, brushes need to contact the circuit board, but magnets do not need to contact the circuit board, which greatly increases the service life of the switch. The combination of the commutation assembly and the commutation lever through the base shell can effectively prevent dust from entering the switch and increase the reliability of the commutation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a schematic diagram of the internal component distribution structure of the base shell of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the base shell of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the push piece for this application;

[0022] Figure 5 This is a schematic diagram of the structure of the linear Hall element trigger component of this application;

[0023] Figure 6 This is a schematic diagram of the structure of the steering assembly of this application;

[0024] Figure 7 This is a schematic diagram of the structure of the steering limit block of this application;

[0025] Figure 8 A schematic diagram of the structure of the contact assembly for this application;

[0026] Fig. 9 This is a schematic diagram of the structure of the upper cover of this application;

[0027] Fig.10This is a schematic diagram of the installation structure of the square magnet installation box of this application;

[0028] Fig.11 This is a schematic diagram of the installation structure of the circuit board for this application;

[0029] Fig.12 This is a schematic diagram of the structure of the magnet installation mechanism of this application;

[0030] Fig.13 A top view of the structure of this application;

[0031] Fig.14 This is a schematic diagram of the installation structure of the speed control Hall element trigger component of this application.

[0032] In the figure: 1. Upper cover; 101. Contact piece mounting slot; 2. Base shell; 201. Reversing lever mounting circular hole; 202. Reversing limit groove; 203. Push rod guide groove; 204. Reversing block guide rib; 3. Push rod mounting groove; 4. Push piece; 41. Push rod; 42. Dust ring; 43. Dust ring mounting slot; 44. Waist-shaped protrusion; 45. Fulcrum spring; 46. Fulcrum; 47. Spring column; 48. Main spring; 5. Trigger; 6. Steering assembly; 61. Steering limit block; 62. Reversing spring; 63. Steel ball; 64. Circular arc groove; 65. Cylindrical protrusion; 66. Reversing block; 67. Cylindrical magnet A; 68. Rotation limit groove; 7. Reversing assembly; 71. Reversing lever ;72. Cylindrical surface;73. Rotation limit protrusion;74. Self-tapping screw;8. Contact assembly;81. Contact piece B;811. Contact plate;812. Contact point;813. L-shaped piece;82. Contact piece A;83. Springboard;84. Contact piece C;85. Springboard support block;86. Conductive contact piece;9. Magnet mounting mechanism;91. Square magnet mounting box;92. Square magnet;10. Speed ​​regulating Hall element trigger assembly;1001. Magnet mounting base;1002. Cylindrical magnet B;1003. Waist-shaped mounting hole;1004. Cylindrical magnet C;11. Circuit board;111. Switch type Hall element A;112. Switch type Hall element B;113. Linear Hall element C. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] See also Figure 1-Figure 14 , this application provides a technical solution:

[0035] Embodiment 1

[0036] See also Figure 1-Figure 2 In the embodiment of the present application, a large current Hall signal brushless switch includes an upper cover 1 and a base shell 2, the upper cover 1 covers the base shell 2, and a push rod mounting groove 3 is formed between the upper cover 1 and one side of the base shell 2, a push piece 4 is inserted in the push rod mounting groove 3, and a trigger 5 is connected to one end of the push piece 4, a steering assembly 6 is arranged at the top side of the interior of the base shell 2, and a reversing assembly 7 for driving the steering assembly 6 to move is also arranged on the upper part of the base shell 2, a contact assembly 8 is arranged at the lower part of the interior of the base shell 2, and a speed regulating Hall element trigger assembly 10 is installed on the push piece 4 inside the base shell 2, a magnet mounting mechanism 9 is installed in the front of the contact assembly 8 in the base shell 2, and a circuit board 11 is installed in the front of the magnet mounting mechanism 9 in the base shell 2.

[0037] See also Figure 4 In the embodiment of the present application, the push member 4 includes a push rod 41 passing through the push rod mounting groove 3, the outer sleeve of the push rod 41 is provided with a dust ring 42, and one end of the push rod 41 is provided with a dust ring mounting groove 43 matched with the dust ring 42, so that the dust ring 42 is clamped and sleeved on the push rod 41 through the dust ring mounting groove 43, and the front of the push rod 41 is located in the base shell 2 and is provided with a waist-shaped protrusion 44, a fulcrum spring 45 penetrates the upper part of one end of the push rod 41, and the upper and lower ends of the fulcrum spring 45 are connected to the fulcrum 46, and a circular hole is provided on the end surface of the push rod 41 away from the dust ring 42, and a spring column 47 is inserted in the hole, and the outer sleeve of the spring column 47 is provided with a main spring 48, and the end of the spring column 47 away from the push rod 41 is connected to the inner wall of the base shell 2.

[0038] In the above scheme, by pressing the trigger 5, the push rod 41 will slide along the push rod guide groove 203, so that the push rod 41 can drive the fulcrum 46 to move, and the fulcrum 46 will slide on the springboard 83, so that the springboard 83 contacts the contact point 812 on the contact piece B 81, forming a loop.

[0039] See also Figure 5 In the embodiment of the present application, the speed regulating Hall element trigger assembly 10 includes a magnet mounting base 1001, and a cylindrical magnet B 1002 and a cylindrical magnet C 1004 are arranged on the front of the magnet mounting base 1001. A waist-shaped mounting hole 1003 corresponding to the waist-shaped protrusion 44 is also arranged on the front of the magnet mounting base 1001. The end of the waist-shaped protrusion 44 away from the push rod 41 passes through the waist-shaped mounting hole 1003. The cylindrical magnet B 1002 and the cylindrical magnet C 1004 have one N pole facing upward and the other S pole facing upward.

[0040] See also Figure 3In the embodiment of the present application, a push rod guide groove 203 is provided on the inner wall of the base shell 2, and the back side of the push rod 41 slides through the push rod guide groove 203.

[0041] The second embodiment is different from the first embodiment in that:

[0042] See also Figure 6 and Figure 7 In the embodiment of the present application, the steering assembly 6 includes a steering limit block 61, and a reversing block guide rib 204 adapted to the steering limit block 61 is arranged on the upper part of the inner wall of the base shell 2. The steering limit block 61 slides on the reversing block guide rib 204, and an empty groove is arranged on one side of the steering limit block 61, and a reversing spring 62 is installed on the inner wall of the empty groove. One end of the reversing spring 62 extends out of the empty groove and is bonded with a steel ball 63. The inner side wall of the base shell 2 is provided with a reversing limit groove 20 corresponding to the steel ball 63. 2. The steel ball 63 is clamped in the reversing limit groove 202. A circular arc groove 64 is provided on one side of the steering limit block 61. A cylindrical protrusion 65 is slidably provided in the circular arc groove 64. One end of the cylindrical protrusion 65 extends out of the circular arc groove 64 and is connected to the reversing block 66. A cylindrical magnet A67 is provided on the front of the reversing block 66. By toggling the reversing component 7, the position of the reversing block 66 is adjusted to be in different positions of left, middle and right, so that the switch gives different signals to control the forward and reverse rotation of the whole machine.

[0043] See also Figure 6 and Figure 7 In the embodiment of the present application, the reversing assembly 7 includes a reversing lever 71, a cylindrical surface 72 is provided at the lower part of one end of the reversing lever 71, a reversing lever mounting circular hole 201 matched with the cylindrical surface 72 is provided at the upper part of one side of the base shell 2, one end of the cylindrical surface 72 passes through the reversing lever mounting circular hole 201, and rotation limiting protrusions 73 are provided at both edges of one end of the cylindrical surface 72, and a rotation limiting groove 68 matched with the rotation limiting protrusion 73 is provided at one end of the steering limit block 61, and the two rotation limiting protrusions 73 on the cylindrical surface 72 are arranged in the rotation limiting groove 68 and can rotate therein, and are fixed by self-tapping screws 74.

[0044] See also Figure 6 and Figure 7 as well as Figure 8 In the embodiment of the present application, the contact assembly 8 includes a contact piece B81 and a contact piece A82, a bayonet is provided on the upper side of the contact piece A82, a springboard 83 is movably connected in the bayonet, and a contact piece C84 is connected to one side of the contact piece A82 at a position below the springboard 83, the back of the contact piece C84 is attached to the inner wall of the base shell 2, and a conducting contact piece 86 is provided on the inner top side of the upper end of the contact piece C84, the contact assembly 8 also includes a springboard support block 85 arranged on the inner lower side of the base shell 2, and one end of the springboard 83 is overlapped on the springboard support block 85.

[0045] See also Figure 6 and Figure 7 as well as Figure 8 In the embodiment of the present application, the contact piece B81 includes a contact plate 811, a contact point 812 corresponding to the springboard 83 is arranged on one side of the upper end of the contact plate 811, and an L-shaped piece 813 is arranged on the upper end of the contact plate 811, and the L-shaped piece 813 is attached to the inner wall of the base shell 2.

[0046] In the above scheme: when the trigger 5 is pressed inward, the trigger 5 will drive the push rod 41 to move inward together, and the push rod 41 will drive the fulcrum 46 and the speed regulating Hall element trigger assembly 10 to move. During the pressing process, the fulcrum 46 will press the springboard assembly 83, so that the springboard 83 contacts the contact point 812 on the contact piece B 81, thereby making the contact piece A 82 and the contact piece B 81 conductive. During the conductive process, an arc will be generated. Under the influence of the magnetic field of the square magnet 92, the arc will deviate from the center position of the contact, reducing the electrical corrosion of the contact. During the ignition process, the internal resistance of the contact will increase. When the push rod 41 continues to move inward, the conductive contact piece 86 will connect the contact piece A 82 and the contact piece B 81 components together to form a parallel circuit, reducing the current passing through the silver contact.

[0047] For further information, see Fig. 9 In the embodiment of the present application, two contact piece mounting slots 101 are provided at the bottom of the upper cover 1, and the contact plate 811 and the contact piece A82 pass through the two contact piece mounting slots 101 respectively.

[0048] For further information, see Fig.12 In the embodiment of the present application, the magnet mounting mechanism 9 includes a square magnet mounting box 91, and a square magnet 92 is mounted inside the square magnet mounting box 91.

[0049] For further information, see Fig.12 In the embodiment of the present application, a switch type Hall element A 111, a switch type Hall element B 112 and a linear Hall element C 113 are respectively provided on one side of the circuit board 11, and a strip groove is also provided on one side of the circuit board 11, and the end of the waist-shaped protrusion 44 away from the push rod 41 passes through the strip groove.

[0050] Working principle:

[0051] S1. When the trigger 5 is pressed inward, the trigger 5 will drive the push rod 41 to move inward, and the push rod 41 will drive the fulcrum 46 and the speed regulating Hall element trigger assembly 10 to move. During the pressing process, the fulcrum 46 will press the springboard assembly 83, so that the springboard 83 contacts the contact point 812 on the contact piece B 81, thereby making the contact piece A 82 and the contact piece B 81 conductive. During the conductive process, an arc will be generated. Under the influence of the magnetic field of the square magnet 92, the arc will deviate from the center position of the contact, thereby protecting the silver layer in the middle part of the surface of the silver contact. After the contact is corroded by electricity, the internal resistance will increase. When the push rod 41 continues to move inward, the conductive contact piece 86 will connect the contact piece A 82 and the contact piece B 81 components together to form a parallel circuit. Part of the current will pass through the conductive contact piece 86, reducing the current passing through the silver contact.

[0052] S2, in the initial position, a cylindrical magnet C 1004 on the speed regulating Hall element trigger assembly 10 is directly above the linear Hall element C 113, and the linear Hall element C 113 does not output a signal at this time. As the push rod 41 moves inward, another cylindrical magnet B 1002 approaches, and the linear Hall element C 113 starts to output a signal, and as the magnetic field increases, the output signal increases. When the trigger 5 is pressed to the bottom, the output signal is the strongest, and the machine is at the maximum speed at this time;

[0053] S3. The function of the reversing lever 71 is to make the switch give different signals through its different positions of left, middle and right to control the forward or reverse of the whole machine. When the reversing lever 71 is turned, the steering limit block 61 will be driven to rotate together. Since the cylindrical protrusion 65 on the reversing block 66 is installed in the arc groove 64 on the steering limit block 61, and since the reversing block 66 is partially restricted in freedom, the reversing block 66 can only move left and right. When the reversing lever 71 is turned to the right, the magnet on the reversing block 66 is facing the switch type Hall element B 112. At this time, the switch type Hall element B 112 outputs a signal. When the reversing lever 71 is in the middle position, the cylindrical magnet A 67 on the reversing block 66 is between the switch type Hall element A 111 and the switch type Hall element B 112. At this time, the two Hall elements do not output signals. When the reversing lever 71 is turned to the left, the cylindrical magnet A 67 on the reversing block 66 is facing the switch type Hall element A 111, at this time, the switch type Hall element A 111 outputs a signal, and the different Hall output signals when moving left and right are used to let the switch give a signal of whether the machine is rotating forward or reverse.

[0054] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A high current Hall signal brushless switch, comprising an upper cover (1) and a base shell (2), characterized in that: The upper cover (1) covers the base shell (2), and a push rod installation groove (3) is formed between the upper cover (1) and one side of the base shell (2), a push piece (4) is inserted into the push rod installation groove (3), one end of the push piece (4) is connected to a trigger (5), a steering assembly (6) is arranged at the top side of the interior of the base shell (2), and a reversing assembly (7) for driving the steering assembly (6) to move is also arranged at the upper part of the base shell (2), a contact assembly (8) is arranged at the lower part of the interior of the base shell (2), and a speed regulating Hall element trigger assembly (10) is installed on the push piece (4) inside the base shell (2), a magnet installation mechanism (9) is installed in the front of the contact assembly (8) in the base shell (2), and a circuit board (11) is installed in the front of the magnet installation mechanism (9) in the base shell (2); The steering assembly (6) comprises a steering limit block (61), a reversing block guide rib (204) matched with the steering limit block (61) is arranged at the upper part of the inner wall of the base shell (2), the steering limit block (61) slides on the reversing block guide rib (204), and a hollow groove is arranged on one side of the steering limit block (61), a reversing spring (62) is installed on the inner wall of the hollow groove, one end of the reversing spring (62) extends out of the hollow groove and is bonded with a steel ball (63), and a reversing limit groove (202) corresponding to the steel ball (63) is arranged on the inner side wall of the base shell (2). The steel ball (63) is clamped and arranged in the reversing limit groove (202); a circular arc groove (64) is arranged on one side of the steering limit block (61); a cylindrical protrusion (65) is slidably arranged in the circular arc groove (64); one end of the cylindrical protrusion (65) extends out of the circular arc groove (64) and is connected to a reversing block (66); a cylindrical magnet A (67) is arranged on the front of the reversing block (66); by toggling the reversing component (7), the position of the reversing block (66) is adjusted to different positions such as left, middle and right, so that the switch gives different signals to control the forward and reverse rotation of the whole machine; The push member (4) comprises a push rod (41) passing through the push rod installation groove (3), a dust ring (42) is sleeved on the outside of the push rod (41), and one end of the push rod (41) is provided with a dust ring installation groove (43) adapted to the dust ring (42), so that the dust ring (42) is sleeved on the push rod (41) through the dust ring installation groove (43), and the front side of the push rod (41) is located in the base shell (2) and is provided with a waist-shaped protrusion (43). 4), a fulcrum spring (45) is passed through the upper part of one end of the push rod (41), and the upper and lower ends of the fulcrum spring (45) are connected to the fulcrum (46), and a circular hole is provided on the end surface of the push rod (41) away from the dust ring (42), and a spring column (47) is inserted in the hole, and a main spring (48) is sleeved on the outside of the spring column (47), and the end of the spring column (47) away from the push rod (41) is connected to the inner wall of the base shell (2).

2. A high current Hall signal brushless switch according to claim 1, characterized in that: The speed regulating Hall element trigger assembly (10) comprises a magnet mounting base (1001), a cylindrical magnet B (1002) and a cylindrical magnet C (1004) are arranged on the front of the magnet mounting base (1001), and a waist-shaped mounting hole (1003) corresponding to the waist-shaped protrusion (44) is also arranged on the front of the magnet mounting base (1001).

3. A high current Hall signal brushless switch according to claim 1, characterized in that: The inner wall of the base shell (2) is provided with a push rod guide groove (203), and the back side of the push rod (41) slides through the push rod guide groove (203).

4. A large current Hall signal brushless switch according to claim 3, characterized in that: The reversing assembly (7) comprises a reversing lever (71), a cylindrical surface (72) is arranged at the lower part of one end of the reversing lever (71), a reversing lever mounting circular hole (201) matched with the cylindrical surface (72) is arranged at the upper part of one side of the base shell (2), one end of the cylindrical surface (72) passes through the reversing lever mounting circular hole (201), and rotation limiting protrusions (73) are arranged at both edges of one end of the cylindrical surface (72), one end of the steering limiting block (61) is provided with a rotation limiting groove (68) matched with the rotation limiting protrusion (73), and the two rotation limiting protrusions (73) on the cylindrical surface (72) are arranged in the rotation limiting groove (68) and can rotate therein, and are fixed by self-tapping screws (74).

5. A high current Hall signal brushless switch according to claim 1, characterized in that: The contact assembly (8) comprises a contact piece B (81) and a contact piece A (82); a bayonet is arranged on the upper side of the contact piece A (82); a springboard (83) is movably engaged in the bayonet; a contact piece C (84) is engaged in a position below the springboard (83) on one side of the contact piece A (82); the back side of the contact piece C (84) is attached to the inner wall of the base shell (2); and a conducting contact piece (86) is arranged on the inner top side of the upper end of the contact piece C (84); the contact assembly (8) further comprises a springboard support block (85) arranged on the inner lower side of the base shell (2); one end of the springboard (83) is overlapped on the springboard support block (85).

6. A large current Hall signal brushless switch according to claim 5, characterized in that: The contact piece B (81) comprises a contact plate (811), a contact point (812) corresponding to the springboard (83) is arranged on one side of the upper end of the contact plate (811), and an L-shaped piece (813) is arranged on the upper end of the contact plate (811), and the L-shaped piece (813) is attached to the inner side wall of the base shell (2).

7. A large current Hall signal brushless switch according to claim 6, characterized in that: The bottom of the upper cover (1) is provided with two contact piece mounting slots (101), and the contact plate (811) and the contact piece A (82) respectively pass through the two contact piece mounting slots (101).

8. The high current Hall signal brushless switch according to claim 1, characterized in that: The magnet installation mechanism (9) comprises a square magnet installation box (91), and a square magnet (92) is installed inside the square magnet installation box (91).

9. The large current Hall signal brushless switch according to claim 1, characterized in that: One side of the circuit board (11) is respectively provided with a switch type Hall element A (111), a switch type Hall element B (112) and a linear Hall element C (113), and one side of the circuit board (11) is also provided with a strip groove.

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