A brushless motor integrated control switch and an electric tool

Abstract

The present invention relates to the technical field of speed control switches, and specifically discloses a brushless motor integrated control switch and a power tool. The switch is used to adjust the speed and rotation direction of a brushless motor, and includes a housing, a push rod assembly, a commutation assembly, and a sensing assembly; the push rod assembly includes a push rod main body, which is movably installed on the housing and can reciprocate along the extension direction of the push rod main body; the commutation assembly includes a commutation main body, which is rotatably connected to the housing; the sensing assembly is installed inside the housing and includes a push rod sensor and a commutation sensor. The push rod sensor is used to detect the displacement of the push rod main body to control the speed of the brushless motor; the commutation sensor is used to detect the position of the commutation main body to control the rotation direction of the brushless motor. This switch enables operators to effectively control the speed and rotation direction of the brushless motor, improves the efficiency of adjustment operations, and greatly extends the service life of the switch.

Description

Technical Field

[0001] The present invention relates to the technical field of speed control switches, and particularly to a brushless motor integrated control switch and a power tool. Background Art

[0002] Due to its characteristics such as low noise, high efficiency, and no dust generation during operation, brushless motors are used in more and more places.

[0003] However, in the prior art, the speed control switch of a brushless motor is often designed with a mechanical structure; by changing the connection state of the circuit and the resistance value of the components, the current and voltage of the motor are adjusted, and then the speed and rotation direction of the brushless motor are changed and adjusted. The above mechanical structure is complex and occupies a large space; during the long-term use of the switch, the mutually contacting parts in the circuit are easily damaged due to excessive friction, causing the resistance value of the components to change, resulting in inaccurate speed control of the motor, and thus affecting the service life of the switch. Moreover, when the working conditions of the brushless motor change, it takes a lot of time for the operator to adjust and test the resistance value and position of the components, which leads to low working efficiency of the switch. Summary of the Invention

[0004] The purpose of the present invention is to provide a brushless motor integrated control switch and a power tool to solve the problems that the speed and rotation direction of a brushless motor are difficult to control and adjust, and the service life of the switch is short.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A brushless motor integrated control switch for adjusting the speed and rotation direction of a brushless motor, comprising a housing, a push rod assembly, a commutation assembly, and a sensing assembly; the push rod assembly includes a push rod main body, the push rod main body is movably installed on the housing and can reciprocate along the extension direction of the push rod main body; the commutation assembly includes a commutation main body, the commutation main body is rotatably connected to the housing; the sensing assembly is installed in the housing and includes a push rod sensor and a commutation sensor, the push rod sensor is used to detect the displacement of the push rod main body to control the speed of the brushless motor; the commutation sensor is used to detect the position of the commutation main body to control the rotation direction of the brushless motor.

[0007] Wherein, the commutation assembly further includes a commutation abutting member and a commutation limiting member cooperating with the commutation abutting member, the commutation abutting member is arranged at one end of the commutation main body, and the commutation limiting member enables the commutation main body to stay at a first position, a second position, and a third position; the second position is located between the first position and the third position, and when the commutation main body is located at the second position, the commutation assembly and the push rod assembly are mutually clamped, so that the push rod main body is locked at a position away from the housing.

[0008] Preferably, a moving contact piece is provided on one side of the push rod member body facing the housing. Two fixed contact pieces are installed in the housing. One fixed contact piece is electrically connected to a power supply, and the other fixed contact piece is electrically connected to a brushless motor. When the moving contact piece is in contact with the two fixed contact pieces respectively, the power supply is electrically connected to the brushless motor.

[0009] Further, the push rod assembly further includes a telescopic spring and a push rod button. The push rod button is detachably connected to the side of the push rod member body away from the housing. The telescopic spring is sleeved on the push rod member body, and both ends thereof are in contact with the housing and the push rod button respectively. The telescopic spring can push the push rod member body so that the push rod member body is located at a position away from the housing, and the moving contact piece is disconnected from the two fixed contact pieces.

[0010] Preferably, the push rod assembly further includes a push rod member transmitter installed on the push rod member body. The push rod member transmitter is used to send a signal to the push rod member sensor. The commutation assembly further includes a commutation member transmitter installed on the commutation member body. The commutation member transmitter is used to send a signal to the commutation member sensor.

[0011] Preferably, the push rod member transmitter and the commutation member transmitter are magnets. The push rod member sensor is a Hall speed control element, and the commutation member sensor is a Hall commutation element.

[0012] Preferably, the sensing assembly further includes a circuit board. The push rod member sensor and the commutation member sensor are both installed on the circuit board and are both communicatively connected to the circuit board.

[0013] Further, the circuit board is further provided with a brushless motor connection terminal for connecting the brushless motor and a power supply connection terminal for electrically connecting the power supply.

[0014] Furthermore, the circuit board includes a power regulation board and a control unit board communicatively connected to the power regulation board. The control unit board can control the power regulation board according to the signals output by the push rod member sensor and the commutation member sensor.

[0015] An electric tool includes an electric tool main body and a brushless motor integrated control switch, and the brushless motor integrated control switch is the brushless motor integrated control switch as described above.

[0016] Advantages of the present invention:

[0017] The rotating commutation part body can rotate relative to the housing. By detecting the position of the commutation part body, the push rod part sensor can obtain the signal of the rotation direction of the brushless motor. Pushing the push rod part body can reciprocate along its extending direction. According to the distance between the push rod part body and the push rod part sensor, the push rod part sensor can obtain the signal of the rotation speed of the brushless motor. The above settings enable the operator to complete the selection of the rotation direction and speed of the brushless motor by controlling the commutation part body and the push rod part body. The adjustment process of the operator is simplified, and the work efficiency is improved. By selecting the sensing component, the damage caused by friction of the components is reduced, and the service life of the switch is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the brushless motor integrated control switch provided by an embodiment of the present invention;

[0019] Figure 2 is an exploded view of the push rod assembly provided by an embodiment of the present invention.

[0020] In the figure:

[0021] 100, housing; 101, side housing; 102, first central housing; 103, second central housing; 104, heat dissipation plate; 110, fixed contact piece;

[0022] 200, push rod assembly; 210, push rod part body; 211, second male card connection end; 220, push rod part emitter; 230, moving contact piece; 240, telescopic spring; 250, push rod button; 251, first male card connection end;

[0023] 300, sensing assembly; 310, push rod part sensor; 320, commutation part sensor; 331, power regulation board; 332, control unit board; 333, flexible connection piece; 340, brushless motor connection terminal; 350, power supply connection terminal;

[0024] 400, commutation assembly; 410, commutation part body; 411, first female card connection end; 412, second female card connection end; 420, commutation part emitter; 430, commutation part abutting piece; 440, commutation part limiting piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0026] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0029] Such as Figure 1As shown in the figure, this embodiment provides a brushless motor integrated control switch for adjusting the rotation speed and direction of a brushless motor, which includes a housing 100, a push rod assembly 200, a commutation assembly 400, and a sensing assembly 300; the push rod assembly 200 includes a push rod body 210, and the push rod body 210 is movably installed on the housing 100 and can reciprocate along the extending direction of the push rod body 210; the commutation assembly 400 includes a commutation body 410, and the commutation body 410 is rotatably connected to the housing 100; the sensing assembly 300 is installed in the housing 100 and includes a push rod sensor 310 and a commutation sensor 320. The push rod sensor 310 is used to detect the displacement of the push rod body 210 to control the rotation speed of the brushless motor; the commutation sensor 320 is used to detect the position of the commutation body 410 to control the rotation direction of the brushless motor. Rotating the commutation body 410 can rotate relative to the housing 100. By detecting the position of the commutation body 410, the push rod sensor 310 can obtain a signal of the rotation direction of the brushless motor. Pushing the push rod body 210 can reciprocate along its extending direction. According to the distance between the push rod body 210 and the push rod sensor 310, the push rod sensor 310 can obtain a signal of the rotation speed of the brushless motor; the above settings enable the operator to complete the selection of the rotation direction and speed of the brushless motor by controlling the commutation body 410 and the push rod body 210. The operation process of the operator is simplified, and the work efficiency is improved; by selecting the sensing assembly 300, the damage caused by friction of the components is reduced, and the service life of the switch is prolonged.

[0030] Preferably, the push rod assembly 200 further includes a push rod emitter 220 installed on the push rod body 210, and the push rod emitter 220 is used to send a signal to the push rod sensor 310; the commutation assembly 400 further includes a commutation emitter 420 installed on the commutation body 410, and the commutation emitter 420 is used to send a signal to the commutation sensor 320. The setting of the push rod emitter 220 facilitates the determination of the position of the push rod body 210 by the push rod sensor 310; the setting of the commutation emitter 420 facilitates the determination of the distance between the commutation sensor 320 and the commutation body 410. By selecting the cooperation mode of the emitter and the sensor, the accuracy of the sensor detection operation is ensured.

[0031] In this embodiment, the push rod sensor 310, the control unit, and the brushless motor are communicatively connected in sequence. The push rod sensor 310 is installed on the housing 100. When the push rod main body 210 approaches the housing 100, the push rod transmitter 220 approaches the push rod sensor 310. When the push rod main body 210 moves away from the housing 100, the push rod transmitter 220 moves away from the push rod sensor 310. The operator pushes the push rod main body 210, changing the distance between the push rod transmitter 220 and the push rod sensor 310, causing the signal of the rotational speed of the brushless motor received and output by the control unit to change, and further causing the brushless motor to rotate at the rotational speed defined by the control unit. The above arrangement has a simple structure, occupies a small space, and is convenient for maintenance.

[0032] Specifically, when the push rod main body 210 approaches the housing 100, the speed signal output by the push rod sensor 310 controls the rotational speed of the brushless motor to increase. When the push rod main body 210 moves away from the housing 100, the speed signal output by the push rod sensor 310 controls the rotational speed of the brushless motor to decrease.

[0033] Preferably, the push rod transmitter 220 and the commutator transmitter 420 are preferably magnets. The push rod sensor 310 is preferably a Hall speed control element, and the commutator sensor 320 is preferably a Hall commutation element. Magnets have a low cost and a simple structure. Hall speed control elements and Hall commutation elements have a firm structure, a small volume, a light weight, and are convenient to install. Selecting the above structure avoids mechanical wear and extends the service life of the switch.

[0034] In this embodiment, the commutation assembly 400 further includes a commutator abutting member 430 and a commutator limiting member 440 that cooperates with the commutator abutting member 430. The commutator abutting member 430 is provided at one end of the commutator main body 410. The commutator limiting member 440 enables the commutator main body 410 to stay at the first position, the second position, and the third position. The second position is located between the first position and the third position. When the commutator main body 410 is located at the second position, the commutation assembly 400 is engaged with the push rod assembly 200, locking the push rod main body 210 in a position away from the housing 100. The engagement setting makes the acting point of the force between the commutation assembly 400 and the push rod assembly 200 unchanged, so there is no relative skew between the two. The engagement setting between the commutation assembly 400 and the push rod assembly 200 can avoid the occurrence of a situation where the speed signal changes due to accidental touch, reducing the probability of accidental situations.

[0035] Preferably, when the commutator main body 410 is located at the second position, the commutator sensor 320 outputs a non-rotation signal, causing the brushless motor not to rotate. The engagement setting between the commutation assembly 400 and the push rod assembly 200 can avoid the occurrence of a situation where the commutator main body 410 deviates from the second position due to accidental touch and the brushless motor starts to rotate, further ensuring the safety of the switch.

[0036] In this embodiment, the commutation member sensor 320, the control unit, and the brushless motor are communicatively connected in sequence, and the commutation member sensor 320 is installed on the housing 100. When the commutation member main body 410 rotates towards the first position, the commutation member transmitter 420 moves away from the commutation member sensor 320; when the commutation member main body 410 rotates towards the third position, the commutation member transmitter 420 approaches the commutation member sensor 320. Through the above arrangement, it is ensured that the distances between the commutation member transmitters 420 at different positions and the commutation member sensor 320 are different. By configuring the positions of the three commutation member main bodies 410, the commutation member transmitter 420 can output three different signals, which can respectively correspond to the three states of the brushless motor rotating forward, rotating reversely, and not rotating. The operator rotates the commutation member main body 410, changing the distance between the commutation member transmitter 420 and the commutation member sensor 320, causing the position of the commutation member main body 410 to change, resulting in a change in the signal of the rotational speed of the brushless motor received and output by the control unit, and further causing the brushless motor to rotate in the direction defined by the control unit. The above arrangement has a simple structure, occupies a small space, and is convenient for maintenance.

[0037] Specifically, when the commutation member main body 410 is in the first position, the commutation member transmitter 420 outputs a forward rotation signal; when the commutation member main body 410 is in the third position, the commutation member transmitter 420 outputs a reverse rotation signal. In other embodiments of the present invention, when the commutation member main body 410 is in the first position, the commutation member transmitter 420 outputs a reverse rotation signal; when the commutation member main body 410 is in the third position, the commutation member transmitter 420 outputs a forward rotation signal.

[0038] In this embodiment, the commutation member abutting member 430 is a commutation steel ball, and the commutation steel ball is connected to one end of the commutation member main body 410 facing the housing 100 through an abutting member spring; three hemispherical grooves matching the commutation steel balls are formed on the commutation member limiting member 440. When the commutation steel balls abut in the three hemispherical grooves, the commutation member main body 410 is respectively in the first position, the second position, and the third position. The above arrangement enables the commutation member main body 410 to stay in the first position, the second position, and the third position, simplifying the structure of the commutation assembly 400.

[0039] Such as Figure 2As shown, the push rod assembly 200 further includes a telescopic spring 240 and a push rod button 250. The push rod button 250 is detachably connected to the side of the push rod body 210 away from the housing 100. The telescopic spring 240 is sleeved on the push rod body 210, and both ends thereof respectively abut against the housing 100 and the push rod button 250. The telescopic spring 240 can push the push rod body 210 to a position away from the housing 100, and the moving contact piece 230 is disconnected from both fixed contact pieces 110. The above setting shows that when the push rod assembly 200 is not operated, the push rod body 210 is away from the housing 100; and at the same time, it is ensured that when the commutation assembly 400 is engaged with the push rod assembly 200, the power supply and the brushless motor are disconnected. The above setting further improves the safety of the switch.

[0040] Continue to refer to Figure 1 and Figure 2 , the commutation assembly 400 is arranged close to the push rod assembly 200. A first female engagement end 411 and a second female engagement end 412 are arranged on the commutation member body 410. A first male engagement end 251 that cooperates with the first female engagement end 411 is arranged on the push rod button 250. A second male engagement end 211 that cooperates with the second female engagement end 412 is arranged on the push rod body 210. The above setting avoids the situation that the engaged position is shifted due to the relative movement between the commutation member body 410 and the push rod body 210, thereby causing the locking of the push rod body 210 to fail.

[0041] Preferably, a first male engagement end boss is arranged on the side of the first male engagement end 251 away from the push rod button 250, and a first female engagement end boss is arranged on the side of the first female engagement end 411 away from the commutation member body 410. The first male engagement end boss and the first female engagement end boss are engaged with each other; so that the first male engagement end 251 and the first female engagement end 411 will not be disengaged from each other due to the force applied to the push rod button 250, reducing the risk of misoperation by the operator and avoiding the safety hazard caused by accidental touch.

[0042] Preferably, a female engagement member is arranged on the second female engagement end 412, and a male engagement member is arranged on the second male engagement end 211. The male engagement member can be engaged with the female engagement member. The above setting makes it not deflect relatively due to the force in the direction perpendicular to the extending direction of the push rod body 210, and further improves the locking effect on the push rod body 210. Specifically, the female engagement member is a U-shaped groove, and the male engagement member is a positioning protrusion, and the positioning protrusion can be engaged in the U-shaped groove.

[0043] In this embodiment, a moving contact piece 230 is provided on one side of the push rod member main body 210 facing the housing 100. Two fixed contact pieces 110 are installed in the housing 100. One fixed contact piece 110 is electrically connected to a power source, and the other fixed contact piece 110 is electrically connected to a brushless motor; when the moving contact piece 230 abuts against the two fixed contact pieces 110 respectively, the power source is electrically connected to the brushless motor. The arrangement of the moving contact piece 230 and the two fixed contact pieces 110 enables the control of the push rod member main body 210 to be electrically connected to / disconnected from the power source and the brushless motor, so that the power source does not supply energy to the brushless motor in the non-working state, saving power consumption while further ensuring that the switch will not cause the brushless motor to start running due to accidental touch in the non-working state.

[0044] Specifically, the moving contact piece 230 is connected to one end of the push rod member main body 210 facing the housing 100 through a contact piece spring.

[0045] Continue to refer to Figure 1 , the sensing assembly 300 further includes a circuit board. The push rod member sensor 310 and the commutation member sensor 320 are both installed on the circuit board and are both communicatively connected to the circuit board. The setting of the circuit board integrates the structure of the switch, enabling each component to be densely and orderly arranged thereon, simplifying the disassembly and assembly steps of each component, improving the production efficiency of the switch, and reducing the space occupied by the device. Since a circuit board is selected, the use of wires is reduced, avoiding the occurrence of misjudgment or stop of the switch caused by wire breakage or mutual interference.

[0046] Specifically, the circuit board is preferably an aluminum substrate. The aluminum substrate has good heat transfer and heat dissipation performance, enabling the components installed thereon to dissipate heat quickly, greatly enhancing the service life of the switch.

[0047] Furthermore, a brushless motor connection terminal 340 for connecting the brushless motor and a power source connection terminal 350 for electrically connecting the power source are also provided on the circuit board. Preferably, both the brushless motor connection terminal 340 and the power source connection terminal 350 are snap-connected to the housing 100. The above arrangement not only simplifies the disassembly and assembly process of the switch but also improves the stability of the switch.

[0048] Further, the circuit board includes a power regulation board 331 and a control unit board 332 communicatively connected to the power regulation board 331. The control unit board 332 can control the power regulation board 331 according to the signals output by the push rod member sensor 310 and the commutation member sensor 320. A control chip is provided on the control unit board 332. By programming the control chip, the operator can set the corresponding speed of the motor when the push rod member body 210 is displaced to any position, and the corresponding rotation direction of the motor when the commutation member body 410 is at each position. The control chip changes the speed of the brushless motor by adjusting the current passing through the brushless motor. The control chip is also communicatively connected to the brushless motor to control the rotation direction of the brushless motor. By dividing the circuit board into the power regulation board 331 and the control unit board 332, not only the positions of the components on the circuit board are adjusted, but also the design of the circuit board is simplified and the production difficulty is reduced. At the same time, the side of the power regulation board 331 with components installed and the side of the control unit board 332 with components installed are arranged facing each other, further reducing the space occupied by the switch. Specifically, a power integration unit for outputting the integrated power is also installed on the control unit board 332. The output end of the power integration unit is electrically connected to the brushless motor. Both fixed contact pieces 110 are installed on the control unit board 332, one is electrically connected to the input end of the power integration unit, and the other is electrically connected to the power connection terminal 350 of the power supply.

[0049] In this embodiment, the housing 100 includes a side shell 101, a first central shell 102, a second central shell 103, and a heat dissipation plate 104 that are detachably connected in sequence. The side shell 101 and the first central shell 102 form a control unit board cavity for accommodating the control unit board 332. The first central shell 102 and the second central shell 103 form a central cavity for accommodating the push rod assembly 200 and the commutation assembly 400. A power regulation board groove for accommodating the power regulation board 331 is formed on the outer side of the second central shell 103. The heat dissipation plate 104 is covered on the power regulation board 331 and is screwed to the second central shell 103. Specifically, the materials of the side shell 101, the first central shell 102, and the second central shell 103 are preferably plastics and are formed by injection molding.

[0050] Still further, the circuit board further includes a flexible connector 333. The flexible connector 333 electrically connects and communicatively connects the power regulation board 331 and the control unit board 332, and the power regulation board 331 can move relative to the control unit board 332. The setting of the flexible connector 333 enables the power regulation board 331 to move relative to the control unit board 332, avoiding the damage of the circuit board connector caused by the inconsistent amplitudes between the power regulation board 331 and the control unit board 332 due to vibration.

[0051] Specifically, the flexible connector 333 is preferably a flexible circuit board, which is fixedly connected to both the power regulation board 331 and the control unit board 332 by welding. The flexible circuit board is small in volume, light in weight and high in assembly density; the welding method provides a firm connection and a long service life. The arrangement of the flexible circuit board weakens the pulling force of the power regulation board 331 and the control unit board 332 on the flexible connector 333 when the tool vibrates, thereby avoiding the occurrence of problems such as the copper skin of the circuit board peeling off, which may cause poor switch function. Moreover, the welding position of the flexible circuit board can be changed arbitrarily, reducing the requirements for the welding position of the circuit board connector and further reducing the space occupied by the switch.

[0052] This embodiment also provides an electric tool, which includes an electric tool main body and a brushless motor integrated control switch, and the brushless motor integrated control switch is the above-mentioned brushless motor integrated control switch.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A brushless motor integrated control switch for adjusting the speed and direction of a brushless motor, characterized in that, Comprising: A housing (100); A push rod assembly (200), including a push rod main body (210), the push rod main body (210) being movably installed on the housing (100) and capable of reciprocating along the extending direction of the push rod main body (210); A commutation assembly (400), including a commutation main body (410), the commutation main body (410) being rotatably connected to the housing (100); A sensing assembly (300), installed inside the housing (100), including a push rod sensor (310) and a commutation sensor (320), the push rod sensor (310) being used to detect the displacement of the push rod main body (210) to control the speed of the brushless motor; the commutation sensor (320) being used to detect the position of the commutation main body (410) to control the rotation direction of the brushless motor; The commutation assembly (400) further includes a commutation abutting member (430) and a commutation limiting member (440) that cooperates with the commutation abutting member (430), the commutation abutting member (430) being provided at one end of the commutation main body (410), and the commutation limiting member (440) enabling the commutation main body (410) to stay at a first position, a second position, and a third position; the second position is located between the first position and the third position, and when the commutation main body (410) is located at the second position, the commutation assembly (400) is engaged with the push rod assembly (200) to lock the push rod main body (210) at a position away from the housing (100); A moving contact piece (230) is provided on the side of the push rod main body (210) facing the housing (100), and two fixed contact pieces (110) are installed inside the housing (100), one of the fixed contact pieces (110) being electrically connected to a power source, and the other fixed contact piece (110) being electrically connected to a brushless motor; when the moving contact piece (230) abuts against the two fixed contact pieces (110) respectively, the power source is electrically connected to the brushless motor; The push rod assembly (200) further includes a telescopic spring (240) and a push rod button (250), the push rod button (250) being detachably connected to the side of the push rod main body (210) away from the housing (100), the telescopic spring (240) being sleeved on the push rod main body (210) and having two ends respectively abutting against the housing (100) and the push rod button (250); the telescopic spring (240) can push the push rod main body (210) to make the push rod main body (210) located at a position away from the housing (100), and the moving contact piece (230) is disconnected from the two fixed contact pieces (110).

2. The brushless motor integrated control switch according to claim 1, wherein The push rod assembly (200) further includes a push rod emitter (220) mounted on the main body (210) of the push rod member. The push rod emitter (220) is configured to send a signal to the push rod sensor (310); the commutation assembly (400) further includes a commutation emitter (420) mounted on the main body (410) of the commutation member. The commutation emitter (420) is configured to send a signal to the commutation sensor (320).

3. The brushless motor integrated control switch according to claim 2, wherein, The push rod emitter (220) and the commutation emitter (420) are magnets; the push rod sensor (310) is a Hall speed control element, and the commutation sensor (320) is a Hall commutation element.

4. The brushless motor integrated control switch according to claim 1, wherein The sensing assembly (300) further includes a circuit board. The push rod sensor (310) and the commutation sensor (320) are both mounted on the circuit board and are both communicatively connected to the circuit board.

5. The brushless motor integrated control switch according to claim 4, wherein The circuit board is further provided with a brushless motor connection terminal (340) for connecting the brushless motor and a power connection terminal (350) for electrically connecting the power supply.

6. The brushless motor integrated control switch according to claim 5, wherein, The circuit board includes a power regulation board (331) and a control unit board (332) communicatively connected to the power regulation board (331). The control unit board (332) can control the power regulation board (331) according to the signals output by the push rod sensor (310) and the commutation sensor (320).

7. An electric tool, comprising an electric tool body and a brushless motor integrated control switch, characterized in that, The brushless motor integrated control switch is the brushless motor integrated control switch according to any one of claims 1-6.

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