Integrated control switch for brushless motor

Abstract

The utility model discloses an integrated control switch of brushless motor belongs to brushless motor technical field. Integrated control switch of brushless motor includes base and the circuit board, commutating subassembly and speed regulation subassembly of being established in base. Commutating subassembly includes commutating lever and commutating brush, and commutating lever is rotatably connected in base around the axis of parallel to first direction, drives commutating brush to be able to connect circuit board, to adjust the steering of brushless motor, and commutating lever can rotate to be located in locking position, makes brushless motor be in locking state, and commutating lever is equipped with first limit part, and speed regulation subassembly includes trigger and speed regulation brush, and trigger can move along second direction, and speed regulation brush can contact with carbon film on the circuit board, to adjust the speed of brushless motor, and trigger is equipped with second limit part, and when commutating lever is located in locking position, first limit part and second limit part cooperate, to limit trigger and commutating lever relative displacement along first direction, need not wire connection.

Description

Technical Field

[0001] This utility model relates to the field of brushless motor technology, and in particular to an integrated control switch for a brushless motor. Background Technology

[0002] In related technologies, brushless DC tools employ a combination of brushless DC switches and control boards to achieve various functions. The brushless DC switch includes a potentiometer, which connects to the control board via wires to control on / off switching and commutation. However, the numerous connecting wires between the brushless DC switch and the control board module lead to complex assembly processes and low production efficiency. Furthermore, the small wire diameter makes them prone to breakage, affecting performance. Utility Model Content

[0003] The purpose of this invention is to provide an integrated control switch for a brushless motor that eliminates the need for wire connections, thereby solving the problems of complex assembly processes, low production efficiency, and the tendency of small-diameter wires to break, which affects the performance of the device.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An integrated control switch for a brushless motor includes a base, on which:

[0006] Circuit board;

[0007] The reversing assembly includes a reversing lever and a reversing brush. The reversing lever is rotatably connected to the base about an axis parallel to a first direction, which drives the reversing brush to connect to the circuit board to adjust the direction of the brushless motor. The reversing lever can be rotated to a locked position to lock the brushless motor. The reversing lever is provided with a first limiting part.

[0008] The speed control assembly includes a trigger and a speed control brush. The trigger is movable in a second direction, and the speed control brush is capable of contacting a carbon film on the circuit board to adjust the speed of the brushless motor. The trigger is provided with a second limiting part. When the reversing lever is in the locked position, the first limiting part and the second limiting part cooperate to limit the relative displacement of the trigger and the reversing lever in the first direction, which is perpendicular to the second direction.

[0009] In some possible implementations, the first limiting portion includes a first protrusion protruding from the reversing lever, and the second limiting portion includes a second protrusion protruding from the trigger. When the reversing lever is in the locked position, the first protrusion and the second protrusion abut against each other along the first direction.

[0010] In some possible implementations, the first limiting portion includes a first clearance groove and a first protrusion arranged along the first direction, and the second limiting portion includes a second clearance groove and a second protrusion arranged along the first direction; when the reversing lever is in the locked position, the first protrusion and the second clearance groove correspond to each other and have a gap along the first direction, and the first protrusion and the second clearance groove are each provided with a matching arc-shaped surface for guidance on the side facing each other, the second protrusion and the first clearance groove correspond to each other and have a gap along the first direction, and the second protrusion and the first clearance groove are each provided with a matching arc-shaped surface for guidance on the side facing each other.

[0011] In some possible implementations, the trigger includes a pivot and a cap disposed at one end of the pivot, the cap being disposed outside the base, and the second limiting portion being disposed on the cap.

[0012] In some possible implementations, the commutation assembly further includes a commutation slider, on which the commutation brush is disposed. Rotation of the commutation lever can drive the commutation slider to move, thereby enabling the commutation brush to connect to the circuit board.

[0013] In some possible implementations, a first cover plate is provided on the base. The first cover plate has three locking slots. The reversing lever has a forward position, a reverse position, and a locked position. The reversing lever drives the locking member on the reversing slider to lock one of the three locking slots. The three locking slots correspond one-to-one with the forward position, the reverse position, and the locked position of the reversing lever.

[0014] In some possible implementations, the speed control assembly further includes a conductive mounting base and a conductive spring. The conductive mounting base is electrically connected to the circuit board, and the conductive spring is connected to the power input terminal. Two sets of connecting contacts are provided between the conductive spring and the conductive mounting base. The trigger can be moved to an on position and an off position. When the trigger is moved to the on position, the connecting contacts are engaged, making the power input terminal conductive with the circuit board. When the trigger is moved to the off position, it abuts against the conductive spring to separate the connecting contacts.

[0015] In some possible implementations, the trigger is provided with on / off brushes, which can conduct electricity with the circuit board when the trigger moves to the on position, and the speed-regulating brush can contact the carbon film on the circuit board.

[0016] In some possible implementations, the speed control assembly further includes a first elastic element connected between the conductive spring and the base, having a tendency to contact the connecting contact head; and / or, the speed control assembly further includes a second elastic element connected between the trigger and the base, having a tendency to position the trigger in the disconnected position.

[0017] In some possible implementations, the circuit board is provided with a heat sink.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides an integrated control switch for a brushless motor. Rotating the commutator lever drives the commutator brush, changing the mechanical contact position between the commutator brush and the circuit board, thus adjusting the direction of the brushless motor. Moving the trigger moves the speed-regulating brush, changing the mechanical contact position between the speed-regulating brush and the carbon film on the circuit board, thus adjusting the speed of the brushless motor. Therefore, the commutator assembly and the circuit board are connected via the commutator brush, and the speed-regulating assembly and the circuit board are connected via the speed-regulating brush, avoiding the use of wires in traditional structures. This simplifies the assembly process and improves production efficiency. Since both the commutator brush and the speed-regulating brush are metal sliding plate structures, compared to wires which are prone to breakage due to their smaller diameter, their structure has higher strength, is less prone to breakage, and performs better in use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the integrated control switch for a brushless motor provided in a specific embodiment of this utility model;

[0021] Figure 2 yes Figure 1 Enlarged view of point A;

[0022] Figure 3 This is an exploded view of the integrated control switch for a brushless motor provided in a specific embodiment of this utility model;

[0023] Figure 4 This is an exploded view of the commutation component provided in a specific embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the first cover plate provided in a specific embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the speed regulating component provided in a specific embodiment of this utility model.

[0026] In the picture:

[0027] 1. Base;

[0028] 2. Reversing assembly; 21. Reversing lever; 211. First limiting part; 2111. First protrusion; 2112. First clearance groove; 22. Reversing slider; 221. Slide groove; 23. Reversing brush; 24. Locking member; 25. Third elastic member;

[0029] 3. Speed ​​control assembly; 31. Trigger; 311. Second limiting part; 3111. Second protrusion; 3112. Second clearance groove; 3113. Arc-shaped surface; 312. Pivot; 313. Cap; 32. Conductive fixing seat; 33. Conductive spring; 34. Connecting contact; 35. First elastic element; 36. Second elastic element; 37. On / off brush; 38. Speed ​​control brush; 39. Power input terminal;

[0030] 4. Circuit board; 41. Heat sink;

[0031] 5. First cover plate; 51. Locking groove;

[0032] 6. Second cover plate. Detailed Implementation

[0033] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] like Figures 1-6 As shown, this embodiment provides an integrated control switch for a brushless motor, including a base 1, a circuit board 4, a commutation component 2, and a speed control component 3 disposed on the base 1.

[0037] The commutation assembly 2 includes a commutation lever 21 and a commutation brush 23. The commutation lever 21 is rotatably connected to the base 1 about an axis parallel to a first direction, causing the commutation brush 23 to connect to the circuit board 4 to adjust the direction of the brushless motor. The commutation lever 21 can rotate to a locked position, locking the brushless motor. Specifically, the rotation of the commutation lever 21 drives the commutation brush 23 to move, thus selectively connecting or disconnecting the circuit board 4. When the commutation brush 23 is not connected to the circuit board 4, the commutation lever 21 is in the locked position, locking the brushless motor. When the commutation brush 23 is connected to the circuit board 4, the brushless motor is in operation. For example, the circuit board 4 has two connected positions and one disconnected position, and the commutation lever 21 has three positions: forward, locked, and reverse. When the commutation lever 21 is in the locked position, the commutation brush 23 is connected to the disconnected position of the circuit board 4, and the brushless motor is locked. When the reversing lever 21 is rotated to the forward position, the commutating brush 23 is connected to one of the contact positions, thereby controlling the forward rotation of the brushless motor. When the reversing lever 21 is rotated to the reverse position, the commutating brush 23 is connected to the other contact position, thereby controlling the reverse rotation of the brushless motor.

[0038] The speed control assembly 3 includes a trigger 31 and a speed-regulating brush 38. The trigger 31 can move in a second direction, and the speed-regulating brush 38 can contact the carbon film on the circuit board 4 to adjust the speed of the brushless motor. Specifically, the speed-regulating brush 38 and the carbon film form a variable resistor structure. When the speed-regulating brush 38 slides on the carbon film, the contact position between the speed-regulating brush 38 and the carbon film changes, thereby changing the effective resistance path length of the current flowing through the carbon film. This causes the equivalent resistance value between the brush and the carbon film to change continuously. This variable resistor is connected in series with the control circuit of the brushless motor, playing the role of adjusting the magnitude of the circuit current. By changing the resistance value, the voltage and current parameters of the brushless motor control circuit are indirectly adjusted, thereby achieving continuous and precise adjustment of the brushless motor speed to meet the diverse needs of different application scenarios for brushless motor speed. The carbon film and the speed-regulating brush 38 are existing technologies and will not be described in detail.

[0039] Rotating the commutator lever 21 causes the commutator brush 23 to move, changing the mechanical contact position between the commutator brush 23 and the circuit board 4, thus adjusting the direction of the brushless motor. Moving the trigger 31 causes the speed-regulating brush 38 to move, changing the mechanical contact position between the speed-regulating brush 38 and the carbon film on the circuit board 4, thus adjusting the speed of the brushless motor. Therefore, the commutator assembly 2 and the circuit board 4 are connected via the commutator brush 23, and the speed-regulating assembly 3 and the circuit board 4 are connected via the speed-regulating brush 38, avoiding the use of wires in traditional structures. This simplifies the assembly process and improves production efficiency. Since both the commutator brush 23 and the speed-regulating brush 38 are metal sliding plate structures, compared to wires which are prone to breakage due to their smaller diameter, their structure has higher strength, is less prone to breakage, and performs better.

[0040] The reversing lever 21 is provided with a first limiting part 211, and the trigger 31 is provided with a second limiting part 311. When the reversing lever 21 is in the locked position, the first limiting part 211 and the second limiting part 311 cooperate to limit the relative displacement of the trigger 31 and the reversing lever 21 along a first direction and a second direction, where the first direction is perpendicular to the second direction. This prevents the trigger 31 and the reversing lever 21 from rotating under the action of force, which would cause the reversing lever 21 and the trigger 31 to tilt. If the reversing lever 21 tilts, the locking position will fail and the circuit will be engaged. If the trigger 31 tilts, the speed regulation accuracy will be reduced. By limiting the reversing lever 21 and the trigger 31 with each other, tilting is prevented, improving the structural reliability and stability. Furthermore, no additional limiting structure is required, resulting in a simple structure.

[0041] The first limiting part 211 includes a first protrusion 2111 protruding from the reversing lever 21, and the second limiting part 311 includes a second protrusion 3111 protruding from the trigger 31. When the reversing lever 21 is in the locked position, the first protrusion 2111 and the second protrusion 3111 abut against each other in the first direction, and the sides of the first protrusion 2111 and the second protrusion 3111 close to each other contact each other, which improves the limiting reliability.

[0042] Furthermore, the first protrusion 2111 is located between the trigger 31 and the second protrusion 3111. The first limiting part 211 includes a first clearance groove 2112 and the first protrusion 2111 arranged along the first direction. The second limiting part 311 includes a second clearance groove 3112 and the second protrusion 3111 arranged along the first direction. When the reversing lever 21 is in the locked position, the first protrusion 2111 and the second clearance groove 3112 correspond to each other and have a gap along the first direction. The first protrusion 2111 and the second clearance groove 3112 are each provided with a matching arc-shaped surface for guidance on the side facing each other. The second protrusion 3111 and the first clearance groove 2112 correspond to each other and have a gap along the first direction. The second protrusion 3111 and the first clearance groove 2112 are each provided with a matching arc-shaped surface for guidance on the side facing each other. For example, the second protrusion 3111 is provided with a recessed arc-shaped surface 3113. When the trigger 31 is in the initial position, structural interference is prevented, ensuring that the reversing lever 21 can rotate. Furthermore, by setting a guide arc surface, the ease of rotation of the reversing lever 21 is further improved.

[0043] Optionally, pressing down the trigger 31 allows the trigger 31 to move in the second direction for speed adjustment. When the reversing lever 21 is in the locked position, the first limiting part 211 is located below the trigger 31 to restrict the downward movement of the trigger 31. That is, the second clearance groove 3112 is located above the first protrusion 2111, and the first protrusion 2111 is located above the second clearance groove 3112.

[0044] The commutation assembly 2 also includes a commutation slider 22, on which commutation brushes 23 are mounted. Rotation of the commutation lever 21 moves the commutation slider 22, allowing the commutation brushes 23 on the commutation slider 22 to connect with the copper foil on the circuit board 4. This prevents the commutation lever 21 from vibrating with the entire machine, which could cause deformation of the commutation brushes 23 and mutual wear with the copper foil on the circuit board 4, leading to commutation failure. The commutation brushes 23 are indirectly connected to the commutation lever 21 via the commutation slider 22, ensuring high reliability.

[0045] The integrated control switch for the brushless motor also includes a first cover plate 5 mounted on the base 1. The first cover plate 5 has three locking slots 51. The reversing lever 21 has a forward position, a reverse position, and a locked position. The reversing lever 21 drives the locking member 24 on the reversing slider 22 to selectively lock into one of the three locking slots 51. The three locking slots 51 correspond one-to-one with the forward position, reverse position, and locked position of the reversing lever 21. Through the locking of the locking slots 51 and the locking member 24, the locking member 24 is mounted on the reversing slider 22, thereby locking the reversing slider 22 into the locking slots 51 of the first cover plate 5, and thus locking the reversing assembly 2 onto the first cover plate 5 and the base 1.

[0046] Optionally, three locking slots 51 are arranged along the second direction, and the reversing slider 22 slides along the second direction. The reversing slider 22 is provided with an inclined groove 221, and the end of the reversing lever 21 is provided with a slide platform. The slide platform is slidably connected to the groove 221. When the reversing lever 21 rotates, it drives the slide platform to rotate, thereby driving the reversing slider 22 to move along the second direction. The forward position and the reverse position are located on both sides of the locked position. When the reversing lever 21 is in the locked position, the locking member 24 is locked in the middle locking slot 51.

[0047] Optionally, the reversing slider 22 has a mounting hole, in which a third elastic element 25 and a locking element 24 are installed. The third elastic element 25 has a tendency to move the locking element 24 toward the locking groove 51. Under the force of the reversing lever 21 driving the reversing slider 22 to move, the elastic force of the third elastic element 25 can be overcome, causing the locking element 24 to slide out of the locking groove 51. When the force is lost, when the reversing lever 21 is in a preset position, i.e., the forward position, the reverse position, or the locked position, the third elastic element 25 resets, and the locking element 24 is locked in the locking groove 51. The third elastic element 25 is a spring.

[0048] The trigger 31 includes a pivot 312 and a cap 313 located at one end of the pivot 312. The cap 313 is located outside the base 1, and a second limiting part 311 is located on the cap 313. The trigger 31 has a split structure, which is convenient for manufacturing.

[0049] The speed control assembly 3 also includes a conductive mounting base 32 and a conductive spring 33. The conductive mounting base 32 is electrically connected to the circuit board 4, and the conductive spring 33 is connected to the power input terminal 39. Two sets of connecting contacts 43 are provided between the conductive spring 33 and the conductive mounting base 32. Each connecting contact 43 includes two contacts, which are respectively located on the conductive spring 33 and the conductive mounting base 32. The two contacts can be connected or separated. The trigger 31 can be moved to an on position and an off position. When the trigger 31 is moved to the on position, the two contacts connect to make the connecting contacts 34 contact, so that the power input terminal 39 is connected to the circuit board 4. When the trigger 31 is moved to the off position, it abuts against the conductive spring 33 to separate the connecting contacts 34, that is, the two contacts are separated. The circuit board 4 includes two connecting terminals, one for connecting to the aforementioned power input terminal 39 (such as the positive terminal of the power supply), and the other for connecting to another power input terminal 39 (such as the negative terminal of the power supply). When the trigger 31 is in the on position, the circuit board 4 is connected to the power supply. By setting two sets of connecting contacts 34, a larger current can pass between the conductive fixing base 32 and the conductive spring 33. At the same time, the two sets of connecting contacts 34 improve the conductivity reliability between the conductive fixing base 32 and the conductive spring 33 and reduce the probability of disconnection due to accidents, such as avoiding the instantaneous disconnection of a single set of connecting contacts 34 due to the vibration of the whole machine.

[0050] The trigger 31 is equipped with a switching brush 37. When the trigger 31 moves to the on position, the switching brush 37 is connected to the circuit board 4, and the speed regulating brush 38 can contact the carbon film on the circuit board 4. By setting the switching brush 37, the switching brush 37 can be connected to or de-connected to the circuit board 4 again during the movement of the trigger 31 to the on position. When connected, speed regulation can be achieved, thereby realizing the coordinated operation of graded control, safety protection and flexible speed regulation of the motor.

[0051] The speed control assembly 3 also includes a first elastic element 35, which is connected between the conductive spring 33 and the base 1. The first elastic element 35 tends to engage the connecting contact 34. When the trigger 31 is in the ON position, the first elastic element 35 enables the connecting contact 34 between the conductive spring 33 and the conductive fixing seat 32 to make contact and conduction, without the need for additional force. The speed control assembly 3 also includes a second elastic element 36, which is connected between the trigger 31 and the base 1. The second elastic element 36 tends to position the trigger 31 in the OFF position. When the trigger 31 is in the ON position, a force needs to be applied to the trigger 31 to overcome the force of the second elastic element 36. After the force is removed, the second elastic element 36 resets, and the trigger 31 is in the OFF position without the need for additional force. The first elastic element 35 and the second elastic element 36 cooperate so that when no external force is applied to the trigger 31, the second elastic element 36 keeps the trigger 31 in the OFF position, overcoming the elastic force of the first elastic element 35, and the connecting contact 34 separates. When an external force is applied to the trigger 31, it overcomes the elastic force of the second elastic element 36, and the trigger 31 is in the engaged position. The first elastic element 35 is reset, and the connecting contact is made conductive. Both the first elastic element 35 and the second elastic element 36 are springs.

[0052] Furthermore, a first cover plate 5 and a second cover plate 6 are respectively installed on both sides of the base 1 along the third direction to form a receiving cavity. The first elastic element 35, the second elastic element 36, the conductive fixing seat 32, and the conductive spring 33 of the speed regulating component 3 are all located in the receiving cavity. The reversing slider 22, the locking element 24, and the reversing brush 23 of the reversing component 2 are also located in the receiving cavity, which serves to fix and protect the above-mentioned structures. The first limiting part 211 and the second limiting part 311 are both located outside the base 1. The current position of the reversing lever 21 and the trigger 31 can be identified according to the position of the first limiting part 211 and the second limiting part 311, thereby identifying the current working state of the reversing component 2 and the speed regulating component 3. The third direction is perpendicular to both the first and second directions.

[0053] The circuit board 4 is equipped with a heat sink 41. If the heat sink 41 is an aluminum substrate, the components on the circuit board 4 will conduct heat to the heat sink 41 through thermal conduction. The heat sink 41 itself dissipates heat quickly, thereby achieving heat dissipation of the circuit board 4, which greatly improves the lifespan and maximum power of the integrated control switch.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An integrated control switch for a brushless motor, characterized in that, Includes a base (1), on which are provided: Circuit board (4); The commutation assembly (2) includes a commutation lever (21) and a commutation brush (23). The commutation lever (21) is rotatably connected to the base (1) about an axis parallel to a first direction, which drives the commutation brush (23) to connect to the circuit board (4) to adjust the direction of the brushless motor. The commutation lever (21) can be rotated to a locked position to lock the brushless motor. The commutation lever (21) is provided with a first limiting part (211). The speed control assembly (3) includes a trigger (31) and a speed control brush (38). The trigger (31) is movable in a second direction, and the speed control brush (38) is in contact with the carbon film on the circuit board (4) to adjust the speed of the brushless motor. The trigger (31) is provided with a second limiting part (311). When the reversing lever (21) is in the locked position, the first limiting part (211) and the second limiting part (311) cooperate to limit the relative displacement of the trigger (31) and the reversing lever (21) in the first direction, which is perpendicular to the second direction.

2. The integrated control switch for the brushless motor according to claim 1, characterized in that, The first limiting part (211) includes a first protrusion (2111) protruding on the reversing lever (21), and the second limiting part (311) includes a second protrusion (3111) protruding on the trigger (31). When the reversing lever (21) is in the locked position, the first protrusion (2111) and the second protrusion (3111) abut against each other along the first direction.

3. The integrated control switch for the brushless motor according to claim 2, characterized in that, The first limiting part (211) includes a first clearance groove (2112) and a first protrusion (2111) arranged along the first direction, and the second limiting part (311) includes a second clearance groove (3112) and a second protrusion (3111) arranged along the first direction; when the reversing lever (21) is in the locked position, the first protrusion (2111) and the second clearance groove (3112) correspond to each other and have a gap along the first direction, and the first protrusion (2111) and the second clearance groove (3112) are each provided with a matching arc-shaped surface for guidance on the side facing each other, the second protrusion (3111) and the first clearance groove (2112) correspond to each other and have a gap along the first direction, and the second protrusion (3111) and the first clearance groove (2112) are each provided with a matching arc-shaped surface for guidance on the side facing each other.

4. The integrated control switch for the brushless motor according to claim 1, characterized in that, The trigger (31) includes a pivot (312) and a cap (313) disposed at one end of the pivot (312). The cap (313) is disposed outside the base (1), and the second limiting part (311) is disposed on the cap (313).

5. The integrated control switch for the brushless motor according to claim 1, characterized in that, The commutation assembly (2) further includes a commutation slider (22), and the commutation brush (23) is disposed on the commutation slider (22). The rotation of the commutation lever (21) can drive the commutation slider (22) to move, so that the commutation brush (23) can connect to the circuit board (4).

6. The integrated control switch for the brushless motor according to claim 5, characterized in that, It also includes a first cover plate (5) disposed on the base (1), the first cover plate (5) having three locking slots (51), the reversing lever (21) having a forward position, a reverse position and the locking position, the reversing lever (21) driving the locking member (24) on the reversing slider (22) to selectively lock into the three locking slots (51), the three locking slots (51) corresponding one-to-one with the forward position, the reverse position and the locking position of the reversing lever (21).

7. The integrated control switch for the brushless motor according to claim 1, characterized in that, The speed control assembly (3) further includes a conductive mounting base (32) and a conductive spring (33). The conductive mounting base (32) is electrically connected to the circuit board (4), and the conductive spring (33) is connected to the power input terminal (39). Two sets of connecting contacts (34) are provided between the conductive spring (33) and the conductive mounting base (32). The trigger (31) can move to the on position and the off position. When the trigger (31) moves to the on position, the connecting contacts (34) make contact, so that the power input terminal (39) is connected to the circuit board (4). When the trigger (31) moves to the off position, it abuts against the conductive spring (33) to separate the connecting contacts (34).

8. The integrated control switch for the brushless motor according to claim 7, characterized in that, The trigger (31) is provided with a switching brush (37). When the trigger (31) moves to the on position, the switching brush (37) can be connected to the circuit board (4), and the speed regulating brush (38) can contact the carbon film on the circuit board (4).

9. The integrated control switch for the brushless motor according to claim 7, characterized in that, The speed control assembly (3) further includes a first elastic element (35) connected between the conductive spring (33) and the base (1) and having a tendency to make the connecting contact (34) contact; and / or, the speed control assembly (3) further includes a second elastic element (36) connected between the trigger (31) and the base (1) and having a tendency to make the trigger (31) be in the disconnected position.

10. The integrated control switch for the brushless motor according to any one of claims 5-9, characterized in that, The circuit board (4) is provided with a heat sink (41).

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