Working machine with operating lever

Abstract

The application provides a work machine with an operating rod, and relates to the field of electric tools, which comprises an operating rod, a front end element arranged at one end of the operating rod and provided with an electric motor suitable for driving a work component, a rear end element arranged at the other end of the operating rod and provided with a power supply suitable for supplying power to the electric motor, characterized in that it further comprises a controller suitable for controlling the driving of the electric motor and arranged in the operating rod, and the electric motor is electrically connected with the power supply via the controller. In this way, the arrangement of the controller directly borrowing the operating rod is very convenient and simple, and the problem that the controller is difficult to arrange in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to a work machine with an operating rod. BACKGROUND

[0002] Conventional work machines with operating rods, such as known grass trimmers, brush cutters, long pole saws, etc., generally have the problem that the controller is difficult to arrange, especially in work machines with operating rods driven by brushless motors, since the controller corresponding to the brushless motor has a certain size and weight, and generally in order to reduce the size and weight of the work part at the front end, the controller is arranged in the power supply part at the rear end, but such arrangement has many problems, especially particularly: directly leading to the power line distance between the controller and the motor being too long, there are many interferences, which seriously affect the EMC test, secondly, the controller has the problem of working heat, and the power supply part itself is also a heat source, and the two are arranged together, which leads to the need to configure a heat dissipation structure to assist heat dissipation; in addition, the installation positioning structure of the controller also needs to be considered, etc., which directly affects product development. SUMMARY

[0003] The present application provides a work machine with an operating rod, which aims to solve the problem that the controller is difficult to arrange in the prior art, and the controller is arranged conveniently and simply.

[0004] Therefore, the present application provides a work machine with an operating rod, which comprises:

[0005] an operating rod;

[0006] a front end element arranged at one end of the operating rod and provided with an electric motor suitable for driving a work part;

[0007] a rear end element arranged at the other end of the operating rod and provided with a power supply suitable for supplying power to the electric motor;

[0008] and further comprising:

[0009] a controller suitable for controlling the driving of the electric motor and mounted in the operating rod;

[0010] the electric motor is electrically connected to the power supply via the controller.

[0011] Further, the controller is close to the electric motor and away from the power supply.

[0012] Further, the controller comprises a base and a circuit board arranged on the base, and the base is in abutting position with the inner wall of the operating rod.

[0013] Further, the base comprises an abutting portion adapted to be positioned in abutment with the inner wall of the operating rod, and the outer surface of the abutting portion is arc-shaped and corresponds to the shape of the inner wall of the operating rod.

[0014] Further, the base is an aluminum base, and the operating rod is an aluminum pipe.

[0015] Further, an insulator is arranged between the circuit board and the base.

[0016] Further, the insulator is a heat-conducting insulator.

[0017] Further, the radial width of the controller is not greater than 23 mm.

[0018] Further, the end of the operating rod away from the electric motor is connected to the outside, and is adapted to guide the outside airflow to flow through the controller along the inner cavity of the operating rod and flow out from the front end.

[0019] Further, an airflow passage is arranged between the controller and the inner wall of the operating rod.

[0020] Further, the power supply is at least one battery pack which is detachably mounted on the rear end and supplies power to the electric motor.

[0021] The present application further provides a working machine with an operating rod, which comprises:

[0022] a working portion which internally houses an electric motor as a driving source;

[0023] a power supply portion for supplying power to the electric motor;

[0024] and,

[0025] an operating rod which is pipe-shaped, supports the working portion at the front portion, and supports the power supply portion at the rear portion;

[0026] and further comprises:

[0027] a controller which is adapted to control the driving of the electric motor and is mounted in the operating rod;

[0028] a power line which is arranged in the operating rod to sequentially connect the power supply portion, the controller and the working portion, and configures an electric switch on the formed circuit.

[0029] Further, the electric motor is a brushless motor which comprises a U-phase terminal, a V-phase terminal and a W-phase terminal, and the power line comprises at least a first motor power line connected to the U-phase terminal, a second motor power line connected to the V-phase terminal and a third motor power line connected to the W-phase terminal.

[0030] Further, the length direction of the controller extends along the longitudinal axis direction of the operating rod, and the radial width perpendicular to the length direction is not greater than 23 mm.

[0031] Further, the controller is close to the electric motor and away from the power supply.

[0032] Further, the controller comprises a base adapted to abut against the inner wall of the operating rod, and the base is at least partially shaped in correspondence with the shape of the inner wall of the operating rod.

[0033] Further, the controller further comprises a circuit board arranged on the base, and the circuit board is arranged in insulation with the base.

[0034] Further, the controller and the inner wall of the operating rod cooperatively form an airflow channel, the airflow channel is in communication with the outside, and in the working state, the outside airflow flows through the airflow channel and sweeps over the controller to flow out of the working part.

[0035] The present application further provides a working machine with an operating rod, comprising:

[0036] a working part, which internally has an electric motor as a driving source;

[0037] a power supply part for supplying power to the electric motor;

[0038] and,

[0039] an operating rod, the front part of which supports the working part, and the rear part of which supports the power supply part;

[0040] It further comprises:

[0041] a controller, which has a radial width not greater than 23 mm, is adapted to control the driving of the electric motor, and is adjacent to the electric motor;

[0042] a power line, which is arranged in the operating rod to sequentially connect the power supply part, the controller and the working part, and is configured with an electric switch on the formed circuit.

[0043] Further, the electric motor is a brushless motor, which comprises a U-phase terminal, a V-phase terminal and a W-phase terminal, and the power line at least comprises a first motor power line connected to the U-phase terminal, a second motor power line connected to the V-phase terminal and a third motor power line connected to the W-phase terminal.

[0044] The present application further provides a working machine with an operating rod, comprising:

[0045] a working head;

[0046] a power supply for supplying electric power;

[0047] an electric motor as a driving source for receiving the electric power to rotate a driving shaft and for making the working head work by rotation of the driving shaft;

[0048] and,

[0049] an operating rod in a tubular shape;

[0050] It also includes:

[0051] a controller adapted to control driving of the electric motor and installed in the operating rod;

[0052] The electric motor is electrically connected with the power supply via the controller.

[0053] Further, the radial width of the controller along the radial direction of the operating rod is not greater than 23 mm.

[0054] Further, the electric motor is a brushless motor.

[0055] Further, the controller is close to the electric motor.

[0056] Further, the controller includes a base adapted to abut against the inner wall of the operating rod, and the base is at least partially shaped in correspondence with the shape of the inner wall of the operating rod.

[0057] Further, the power supply is at least one battery built in the working machine or at least one battery pack externally provided on the working machine and detachably installed on the working machine to supply electric power to the electric motor.

[0058] Compared with the prior art, the technical scheme of the present application has the beneficial technical effects that:

[0059] 1. In the design process, the R&D designers no longer have to worry about where to place the controller, and no longer have to design the mounting structure, heat dissipation structure, etc. of the controller. Directly borrowing the operating rod after the controller arrangement will be very convenient and simple.

[0060] 2. The controller is close to the electric motor and away from the power supply. In this way, the power line between the controller and the electric motor will be greatly shortened, reducing many interferences and facilitating EMC testing.

[0061] 3. The heat generated by the circuit board can be more quickly conducted to the aluminum pipe through the aluminum base for faster heat dissipation. The entire aluminum pipe serves as an auxiliary heat sink for the controller, and the heat dissipation efficiency is faster and better. BRIEF DESCRIPTION OF DRAWINGS

[0062] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0063] Figure 1 : A schematic diagram of the lawn mower structure provided in a specific embodiment of the present invention;

[0064] Figure 2 : A schematic diagram of a partial structure of the operating lever in a specific embodiment of the present invention;

[0065] Figure 3 : A schematic diagram of the controller structure in a specific embodiment of the present invention;

[0066] Figure 4 : Specific embodiments of the present invention Figure 2 Schematic diagram of section AA;

[0067] Figure 5 : Another schematic diagram of the controller structure in a specific embodiment of the present invention;

[0068] Figure 6 : A schematic diagram of the cross-section of the controller located inside the operating lever in a specific embodiment of the present invention;

[0069] Figure 7 : A schematic diagram of the airflow path inside the operating lever in a specific embodiment of the present invention;

[0070] Figure 8 : A schematic diagram of the brush cutter structure provided in a specific embodiment of the present invention;

[0071] Figure 9 : A schematic diagram of the vacuum cleaner structure provided in a specific embodiment of the present invention. Detailed Implementation

[0072] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] A working machine with an operating lever, specifically, referring to Figure 1 Taking the lawn mower 100a as an example, it includes: an operating lever 10 and a front end element 20 and a rear end element 30 located at both ends of the operating lever 10; wherein:

[0074] The front end 20 is arranged at one end of the operating rod 10, specifically, the front end, and is provided with a motor 20a suitable for driving the working component;

[0075] The rear end 30 is arranged at the other end of the operating rod 10, specifically, the rear end relative to the front end, and is provided with a power supply suitable for supplying power to the motor 20a;

[0076] It also includes:

[0077] The controller 40 is suitable for controlling the driving of the motor 20a and is installed in the operating rod 10; the motor 20a is electrically connected with the power supply through the controller 40 built in the operating rod 10.

[0078] Therefore, the user operates the trigger 30d to start the electric switch on the internal circuit of the grass trimmer 100a, the power supply is connected with the power line of the controller 40, and the controller 40 supplies power to the motor 20a to drive the working component to start the grass trimming work.

[0079] In this way, in the design process, the R&D designer no longer needs to worry about where to place the controller 40, and no longer needs to design the mounting structure and heat dissipation structure of the controller 40. Directly borrowing the arrangement of the rear controller 40 of the operating rod is very convenient and simple.

[0080] Please continue to refer to Figure 1 In this embodiment, the working component refers to the grass trimming head 20b for grass trimming, and the grass trimming rope 20c or the grass trimming blade 20c is arranged on the grass trimming head 20b. As known, the motor 20a is the driving source to receive the power supplied by the power supply 30a to rotate the driving shaft, such as the motor shaft, and drive the grass trimming head 20b to rotate, and further drive the grass trimming rope 20c or the grass trimming blade 20c to perform the grass trimming work. Further, in order to protect the safety of the user during the grass trimming process, the protective cover 20d is arranged at the position close to the grass trimming head 20b of the front end 20.

[0081] Please continue to refer to Figure 1 In this embodiment, the power supply arranged at the rear end 30 is a detachable battery pack 30a, which is detachably mounted on the mounting portion 30b of the rear end. Of course, the power supply in this technical solution is not limited to the structure that the detachable battery pack 30a is freely detachable from the mounting portion 30b. For example, the power supply can also be built-in, such as built-in battery in the rear end 30, which is also within the protection scope of this technical solution.

[0082] It should be noted that: in such a working machine with an operating rod, a lithium ion battery is generally used as a power supply unit, at this time, the controller 40 generally has the functions of overload protection, overvoltage protection, overcurrent protection, short circuit protection, undervoltage protection, temperature protection, etc.; for example, when the grass trimmer 100a is entangled with grass during the grass trimming process, the grass trimmer head is entangled with grass and cannot rotate normally, which is prone to overload, at this time, the controller 40 will cut off the power supply line between the controller 40 and the electric motor 20a, to protect the working machine from being damaged.

[0083] Further, please continue to refer to Figure 1 The controller 40 is close to the electric motor 20a and away from the power supply, so that the power line between the controller 40 and the electric motor 20a is greatly shortened, reducing many interferences and facilitating EMC testing.

[0084] Please refer to Figure 2 , Figure 3 And Figure 4 The controller 40 includes a base 401 and a circuit board 402 arranged on the base 401, and the base 401 is in abutting position with the inner wall of the operating rod 10. More specifically, the circuit board 402 is fixed to the base 401 by positioning members such as screws 403. When installing the controller 40, it only needs to be inserted directly from one end of the operating rod 10, at this time, the base 401 of the controller 40 is in abutting position with the inner wall of the operating rod 10. It is preferred to insert the controller 40 from the end close to the electric motor 20a.

[0085] Please continue to refer to Figure 3 The base 401 includes an abutting portion 401b adapted to be in abutting position with the inner wall of the operating rod 10, and the outer surface of the abutting portion 401b is arc-shaped and corresponds to the shape of the inner wall of the operating rod 10, so that the assembly of the controller 40 and the operating rod 10 is more convenient.

[0086] Further, the base 401 is an aluminum base, and the operating rod 10 is an aluminum pipe. Both the aluminum base and the aluminum pipe have good heat dissipation performance. In particular, the aluminum base is in abutting position with the inner wall of the aluminum pipe, and the heat generated by the operation of the circuit board 402 can be conducted to the aluminum pipe for rapid heat dissipation. In particular, the outer surface of the abutting portion 401b of the aluminum base is arc-shaped and corresponds to the shape of the inner wall of the operating rod 10. At this time, on the one hand, the assembly of the controller 40 and the operating rod 10 is more convenient, and on the other hand, the aluminum base and the aluminum pipe are in arc contact, the contact area is large, and the heat generated by the operation of the circuit board 402 can be more quickly conducted to the aluminum pipe for more rapid heat dissipation, which is equivalent to the entire aluminum pipe serving as an auxiliary radiator for the controller, and the heat dissipation efficiency is faster and better.

[0087] In addition, an insulator is arranged between the circuit board 402 and the base 401, so as to avoid the safety risk caused by the leakage of electricity when the circuit board 402 is abnormal.

[0088] Further, the insulator is a heat-conducting insulator, such as heat-conducting silica gel.

[0089] Please continue to refer to the controller structure diagram shown in Figure 3 The base 401 further comprises a supporting part 401c and a limiting connecting part 401a connected with the supporting part 401c. The limiting connecting part 401a and the supporting part 401c combine to form a clamping limiting area, which corresponds to the shape and size of the circuit board 402, so as to limit the circuit board 402 in the area. In this way, the circuit board 402 can be basically supported on the supporting part 401c and limited by the limiting connecting part 401a. At this time, the limiting connecting part 401a is further provided with a positioning hole, and the circuit board 402 is fixed by a positioning member, such as a screw 403, passing through the positioning hole.

[0090] More preferably, under the premise of having the limiting area, the limiting connecting part 401a has and only has one positioning hole, and the circuit board 402 is fixed by a positioning member, such as a screw 403, passing through the positioning hole.

[0091] In addition, still referring to the controller structure diagram shown in Figure 3 The part of the supporting part 401c connected with the limiting connecting part 401a constitutes part of the abutting part 401b. The other end of the abutting part 401b continues to extend along an arc line matched with the operating rod 10, and the extended part and the supporting part 401c form a channel 401d.

[0092] Specifically, the channel 401d can be used for air flow circulation, which will be described below

[0093] Please refer to the air flow path diagram in the operating rod 10 shown in Figure 7 The end of the operating rod 10 away from the electric motor 20a is connected with the outside, which is suitable for the outside air to flow into the operating rod 10, flow through the controller 40 along the inner cavity of the operating rod 10, and flow out from the front end.

[0094] Generally, the assembly gap of the rear end member or the assembly gap of the operating pole 10 connected with the rear end member connects the one end of the operating pole 10 away from the electric motor 20a with the outside, and of course, a air inlet can be specially arranged. Taking the brush cutter 100a as an example, the electric motor 20a is provided with a fan, when working, the electric motor 20a starts to rotate at high speed under the action of power supply, and drives the fan to rotate, so as to guide the air flow from the outside into the operating pole through the above-mentioned assembly gap, and flow through the controller 40 along the inner cavity of the operating pole 10, especially through the above-mentioned channel 401d, and sweep the surface of the circuit board, on the basis of conduction heat dissipation between the base and the operating pole, further increase the air flow heat dissipation, further enhance the heat dissipation efficiency and heat dissipation effect.

[0095] Further, it is also worth mentioning that the radial width of the controller 40 is not greater than 23mm.

[0096] Specifically, please continue to refer to Figure 4 It is shown that the radial width of the controller 40 refers to the width L of the controller 40 in the radial direction of the operating pole 10, which is not greater than 23mm, so as to facilitate the controller 40 to adapt to the operating pole 10 with common radial width in the market.

[0097] It should be noted that the above-mentioned controller 40 is not limited to the structure with the arc-shaped abutting portion, and other structure forms can also be adopted, please refer to the another structure diagram of the controller shown in Figure 5

[0098] Continue to refer to the another structure diagram of the controller shown in Figure 5 The base 401 of the controller 40 still has a limiting connecting portion connected with the supporting portion, and the circuit board 402 and the base 401 are still fixed by only one connecting piece, such as a screw 403.

[0099] Please continue to refer to the another structure diagram of the controller shown in Figure 6 The radial width L of the controller 40 still remains not greater than 23mm, so as to facilitate the controller 40 to adapt to the operating pole 10 with common radial width in the market.

[0100] Of course, the air flow channel is arranged between the controller 40 and the inner wall of the operating pole, please refer to Figure 6 It is shown that the air flow passes through the air flow channel and sweeps the surface of the circuit board and the heat dissipation fin of the base.

[0101] Continuously, a working machine with an operating pole, please refer to Figure 8 It is shown that the brush cutter 100b, for example, includes an operating pole 10, and a working part 20 and a power supply part 30 located at the front and rear ends thereof, wherein:

[0102] ​The working portion 20 is internally provided with an electric motor 20a as a driving source;

[0103] The power supply portion 30 is used for supplying power to the electric motor 20a;

[0104] The operating rod 10 is in a tubular shape, and the working portion 20 is supported at the front portion of the operating rod 10, and the power supply portion 30 is supported at the rear portion of the operating rod 10;

[0105] It further comprises:

[0106] The controller 40 is adapted to control the driving of the electric motor 20a, and is installed in the operating rod 10;

[0107] The power line (not shown in the figure) is arranged in the operating rod 10 to sequentially connect the power supply portion 30, the controller 40 and the working portion 20, and an electric switch (not shown in the figure) is arranged on the formed circuit.

[0108] The electric switch is generally arranged corresponding to the trigger operated by the user, and in the brush cutter 100b, the power line is arranged in the operating rod 10 to sequentially connect the power supply portion 30, the controller 40 and the working portion 20, specifically, the power supply at the power supply portion 30 is connected to the controller 40 through the power line, and generally, the power line here will arrange the electric switch mentioned above, and the controller 40 is further connected to the electric motor 20a at the working portion 20 through the power line.

[0109] The electric motor 20a is a driving source to receive power supply to rotate the driving shaft such as the motor shaft, and to rotate the blade 20c through the rotation of the driving shaft, thereby performing the brush cutting operation.

[0110] It should be noted that the above-mentioned power supply portion 30 preferably comprises two same specification battery packs 30a, which are consistent with the above-mentioned brush cutter 100a, and the battery pack 30a is preferably a lithium ion battery pack, which can be freely connected and disconnected with the corresponding mounting pack, of course, the present embodiment is not limited to the power supply mode of the external battery pack, and the internal battery pack mode can also be used, which is still within the protection scope of the present technical solution.

[0111] Similarly, in the design process, the research and development designers no longer need to be troubled by where to place the controller 40, and no longer need to design the mounting structure and heat dissipation structure of the controller 40, and directly borrowing the arrangement of the controller 40 at the rear of the operating rod will be very convenient and simple.

[0112] Further, the electric motor 20a is a brushless motor, and the brushless motor 20a comprises a U-phase terminal, a V-phase terminal and a W-phase terminal, and the power line at least comprises a first motor power line connected to the U-phase terminal, a second motor power line connected to the V-phase terminal and a third motor power line connected to the W-phase terminal.

[0113] It is known that brushless motor does not use mechanical brush device, has high efficiency, low energy consumption, low noise, super long life, high reliability and other advantages, the corresponding protective controller needs to use brushless controller.

[0114] The brushless controller is generally more complex than the traditional brush motor structure, which needs to convert the DC current through the battery pack into three-phase current, that is, the power lines between the controller 40 and the brushless motor at least include a first motor power line connected to the U-phase terminal, a second motor power line connected to the V-phase terminal, and a third motor power line connected to the W-phase terminal.

[0115] In addition, the length direction of the controller 40 extends along the longitudinal axis direction of the operating rod 10, and the radial width perpendicular to the length direction is not greater than 23 mm, so as to facilitate the controller 40 to adapt to the operating rod 10 with a common radial width on the market.

[0116] Similarly, as described in the above specific embodiment taking the grass trimmer 100a as an example, in order to facilitate EMC testing, the controller 40 is close to the electric motor 20a and far away from the power source, that is, the battery pack 30a, so that the power line between the controller 40 and the electric motor 20a will be greatly shortened, reducing many interferences, so as to facilitate EMC testing.

[0117] Similarly, the controller 40 preferably adopts the structure as shown in Figure 3 and Figure 4 , which includes a base adapted to abut against the inner wall of the operating rod 10, and the base at least partially corresponds to the shape of the inner wall of the operating rod 10, which has all the beneficial technical effects described in the above embodiments.

[0118] Further, the controller 40 further includes a circuit board 402 arranged on the base 401, and the circuit board 402 is arranged in insulation with the base 401.

[0119] Further, continuing to refer to Figure 7 , the controller 40 and the inner wall of the operating rod 10 cooperatively form an airflow channel, which is connected to the outside, and in the working state, the outside airflow flows through the airflow channel and sweeps over the controller from the working part.

[0120] Generally, the assembly gap of the power supply part or the assembly gap of the operating rod 10 and the power supply part connecting the one end of the operating rod 10 away from the electric motor 20a to the outside, of course, a special air inlet can also be provided. Taking the brush cutter 100b as an example, the electric motor 20a is provided with a fan, when working, the electric motor 20a starts to rotate at high speed under the action of power supply, and drives the fan to rotate, so as to guide the airflow from the outside through the above-mentioned assembly gap from one end of the operating rod, and flow through the controller 40 along the inner cavity of the operating rod 10, especially through the above-mentioned channel 401d, and sweep the surface of the circuit board, on the basis of conduction heat dissipation between the base and the operating rod, further increase the air flow dissipation, further enhance the heat dissipation efficiency and effect.

[0121] Continuing to refer to Figure 8 The brush cutter 100b with an operating rod, which comprises: an operating rod 10, and a working part 20 at the front end of the operating rod 10 and a power supply part 30 at the rear end of the operating rod 10;

[0122] The working part 20, which is internally provided with an electric motor 20a as a driving source;

[0123] The power supply part 30, which is used for supplying power to the electric motor 20a;

[0124] The operating rod 10, which supports the working part 20 at the front part and supports the power supply part 30 at the rear part;

[0125] It further comprises:

[0126] The controller 40, which has a radial width of not more than 23mm and is adapted to control the driving of the electric motor 20a and is adjacent to the electric motor 20a;

[0127] The power line, which is arranged in the operating rod 10 to sequentially connect the power supply part 20, the controller 40 and the working part 20, and is provided with an electric switch on the formed circuit.

[0128] In the embodiment, the controller 40 is adjacent to the electric motor 20a, not only limited to the above, the controller 40 is arranged in the operating rod 10, but also can be arranged in the working part 20 or the joint of the working part 20 and the operating rod 10, at the same time, in order to avoid the volume of the working part 20 at the front end being too large, and also need to facilitate the controller 40 to adapt to the operating rod 10 with a common radial width in the market, so the radial width of the controller is designed to be not more than 23mm.

[0129] In this way, the above technical solution can greatly shorten the power line between the controller 40 and the electric motor 20a, reduce many interferences, and facilitate EMC test.

[0130] Further, the electric motor 20a is a brushless motor including a U-phase terminal, a V-phase terminal, and a W-phase terminal, and the electric power lines include at least a first motor electric power line connected to the U-phase terminal, a second motor electric power line connected to the V-phase terminal, and a third motor electric power line connected to the W-phase terminal.

[0131] Continuing to refer to Figure 9 As shown, a work machine having an operating rod, taking the dust collector 100c as an example, includes:

[0132] a work head 20;

[0133] a power source for supplying electric power;

[0134] an electric motor as a driving source to receive the electric power to rotate a driving shaft, and to make the work head work through the rotation of the driving shaft;

[0135] and,

[0136] an operating rod 10 in a tubular shape;

[0137] It further includes:

[0138] a controller 40 adapted to control the driving of the electric motor, and installed in the operating rod 10;

[0139] The electric motor is electrically connected with the power source via the controller.

[0140] Further, a radial width of the controller along a radial direction of the operating rod is not greater than 23 mm.

[0141] Further, the electric motor is a brushless motor.

[0142] Further, the controller is close to the electric motor.

[0143] Further, the controller includes a base adapted to abut against an inner wall of the operating rod, and the base is at least partially shaped in correspondence with the shape of the inner wall of the operating rod.

[0144] Further, the power source is at least one battery pack built-in the work machine or externally attached to the work machine in a detachable manner to supply electric power to the electric motor.

[0145] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A working machine with an operating lever, comprising: control lever; The front end element is located at one end of the operating lever and is equipped with an electric motor suitable for driving the working parts; The rear end unit is located at the other end of the operating lever and is equipped with a power supply suitable for supplying power to the electric motor; Its characteristic is that it further includes: A controller adapted to control the drive of the electric motor and mounted inside the operating lever; The electric motor is electrically connected to the power source via the controller; The controller is located near the electric motor and away from the power source; The controller includes a base and a circuit board disposed on the base, the base being positioned against the inner wall of the operating lever; The base includes an abutment portion adapted to abut and be positioned against the inner wall of the operating lever, the outer surface of the abutment portion being arc-shaped and corresponding to the shape of the inner wall of the operating lever; The end of the operating lever away from the electric motor is connected to the outside, which is suitable for the introduction of external airflow and the flow of air along the inner cavity of the operating lever through the controller and out from the front end unit.

2. The working machine with an operating lever according to claim 1, characterized in that: The base is an aluminum base, and the operating rod is an aluminum tube.

3. The working machine with an operating lever according to claim 2, characterized in that: An insulator is provided between the circuit board and the base.

4. The working machine with an operating lever according to claim 3, characterized in that: The insulator is a thermally conductive insulator.

5. The working machine with an operating lever according to claim 1, characterized in that: The radial width of the controller is no greater than 23 mm.

6. The working machine with an operating lever according to claim 1, characterized in that: An airflow channel is provided between the controller and the inner wall of the operating lever.

7. The working machine with an operating lever according to claim 1, characterized in that: The power source is at least one battery pack, which is detachably installed on the rear end unit to supply power to the electric motor.

8. A working machine with an operating lever, comprising: The work unit has a built-in electric motor as a drive source; A power supply unit, which supplies power to the electric motor; as well as, The operating lever is tubular, with the working part supported at its front and the power supply part supported at its rear; Its characteristic is that it further includes: A controller adapted to control the drive of the electric motor and mounted inside the operating lever; An electric power line is run through the operating lever to connect the power supply unit, the controller and the operating unit in sequence, and an electric switch is configured on the circuit formed therefrom; The controller includes a base adapted to abut against the inner wall of the operating lever, the shape of at least a portion of the base corresponding to the shape of the inner wall of the operating lever; The electric motor is a brushless motor, which includes a U-phase terminal, a V-phase terminal and a W-phase terminal. The power lines include at least a first motor power line connected to the U-phase terminal, a second motor power line connected to the V-phase terminal and a third motor power line connected to the W-phase terminal.

9. The working machine with an operating lever according to claim 8, characterized in that: The controller extends along the longitudinal axis of the operating lever, and its radial width perpendicular to the length direction is no more than 23 mm.

10. The working machine with an operating lever according to claim 8, characterized in that: The controller is located near the electric motor and away from the power supply unit.

11. The working machine with an operating lever according to claim 8, characterized in that: The controller also includes a circuit board disposed on the base, and the circuit board is insulated from the base.

12. The working machine with an operating lever according to claim 8, characterized in that: An airflow channel is formed between the inner wall of the controller and the operating lever. The airflow channel is connected to the outside. In operation, the outside airflow flows through the airflow channel, passes over the controller, and flows out from the operating part.

13. A working machine with an operating lever, comprising: Work head; A power source, which is used to supply electricity; An electric motor serves as the drive source, receiving the electrical power to rotate the drive shaft, and using the rotation of the drive shaft to enable the working head to perform operations. as well as, The operating lever is tubular. Its characteristic is that it further includes: A controller adapted to control the drive of the electric motor and mounted inside the operating lever; The electric motor is electrically connected to the power source via the controller; The controller includes a base adapted to abut against the inner wall of the operating lever, the shape of at least a portion of the base corresponding to the shape of the inner wall of the operating lever; The power source is a battery built into the machine or at least one battery pack externally mounted on the machine, which is detachably installed on the machine to supply power to the electric motor.

14. The working machine with an operating lever according to claim 13, characterized in that: The radial width of the controller along the radial direction of the operating lever is no greater than 23 mm.

15. The working machine with an operating lever according to claim 13, characterized in that: The electric motor is a brushless motor.

16. The working machine with an operating lever according to any one of claims 13 to 15, characterized in that: The controller is located near the electric motor.

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