Electric tool

Abstract

The utility model relates to an electric tool which comprises a machine shell, a motor assembly installed on the machine shell, a transmission assembly connected to the motor assembly and a control circuit board controlling the motor assembly, and the machine shell comprises a main body part extending in the left-right direction and a holding part connected to the lower side of the main body part; the electric tool comprises a first switch assembly and a second switch assembly which are connected to the control circuit board, the first switch assembly is installed on the holding part and provided with a trigger for a user to operate, and the second switch assembly is arranged on the main body part and provided with an operation button for the user to operate. The operation button and the trigger are located on the two sides of the holding part. The control circuit board receives a first trigger signal from the first switch assembly and a second trigger signal from the second switch assembly so as to start the motor assembly. The electric tool is high in safety and comfortable to operate.

Description

[Technical field]

[0001] The utility model relates to the technical field of electric tools, in particular to an electric tool with an improved switch component. [Background Technology]

[0002] An electric tool is a device that operates through a motor component and drives an output part through a transmission component to perform operations. It is popular among users because of its portability and high operating efficiency.

[0003] Since the output part of the power tool often runs at a high speed, if the output part acts on the user, it will cause harm to the user's body. Existing power tools are generally controlled by a switch. If the user accidentally touches the switch, the motor assembly will be turned on and the power tool will be started, so there is a great safety hazard.

[0004] In view of this, it is determined that it is necessary to provide an improved power tool to overcome the deficiencies of the prior art. [Contents of the utility model]

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an electric tool that is highly safe and easy to operate.

[0006] The utility model solves the problems of the prior art by adopting the following technical scheme: an electric tool comprises a casing, a motor assembly mounted on the casing, a transmission assembly connected to the motor assembly and a control circuit board for controlling the motor assembly, the casing comprises a main body extending in the left-right direction and a gripping portion connected to the lower side of the main body; the electric tool comprises a first switch assembly and a second switch assembly connected to the control circuit board, the first switch assembly is mounted on the gripping portion and has a trigger for user operation, the second switch assembly is arranged on the main body and has an operation button for user operation, the operation button and the trigger are located on both sides of the gripping portion; the control circuit board is configured to receive a first trigger signal from the first switch assembly and a second trigger signal from the second switch assembly to start the motor assembly.

[0007] A further improved solution is: the first switch assembly includes a switch installed on the gripping portion, the switch is connected to the control circuit board, and the trigger is operated to trigger the switch.

[0008] A further improved solution is: the trigger includes a trigger rod and a trigger rod installed on the trigger rod, the trigger rod is installed on the housing through a pivot portion, and the trigger rod is operated to drive the trigger rod to trigger the switch.

[0009] A further improved solution is: the control circuit board is installed on the main body, and the control circuit board is located between the operation button and the trigger.

[0010] A further improved solution is: the control circuit board is configured to sequentially receive a first trigger signal from the first switch component and a second trigger signal from the second switch component, thereby starting the motor component.

[0011] A further improved solution is: the electric tool includes a self-locking part installed on the trigger, the self-locking part has a locked state and an unlocked state, in the locked state, the trigger cannot move; in the unlocked state, the trigger moves freely.

[0012] A further improvement is that the gripping portion is arranged obliquely relative to the main body, the housing includes a sole arranged at the end of the gripping portion, and a battery pack that provides energy for the electric tool is installed on the sole.

[0013] A further improvement is that the right end of the main body is arranged to be inclined relative to the left and right directions, the electric tool includes a display unit arranged at the right end of the main body, and the display unit is electrically connected to the control circuit board.

[0014] A further improved solution is: the display unit includes a first indication area for displaying the power information of the battery pack, and after the control circuit board starts the motor assembly, the first indication area displays the power information of the battery pack.

[0015] A further improved solution is: the operation button is arranged at the right end of the main body, the electric tool includes an output part connected to the left end of the main body, and the operation button and the output part are located on both sides of the main body.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the control circuit board needs to receive the first trigger signal from the first switch component and the second trigger signal from the second switch component before it can start the motor component and then start the power tool. That is to say, the user must perform at least two actions to start the machine, which effectively prevents user misoperation and greatly increases the safety of use; the operation button and the trigger are located on both sides of the grip, and when the user's palm grasps the grip, the trigger can be operated and the operation button can be pressed with only one hand, which makes the operation more comfortable; the power tool includes a self-locking part installed on the trigger, so the user needs to perform three actions to start the machine, namely, first press the self-locking part to put the self-locking part in an unlocked state, and then operate the trigger and press the operation button to start the power tool, which further reduces the possibility of user misoperation and increases safety of use. [Drawings]

[0017] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a three-dimensional schematic diagram of a power tool in a preferred embodiment of the utility model;

[0019] Figure 2 yes Figure 1 Exploded view of the power tool shown

[0020] Figure 3 yes Figure 1 A schematic diagram of an anatomical representation of the power tool shown;

[0021] Figure 4 yes Figure 1 A schematic diagram of the structure of a cover in the electric tool shown;

[0022] Figure 5 yes Figure 1 A schematic diagram of a first contour surface in the electric tool shown;

[0023] Figure 6 yes Figure 1 A schematic diagram of the matching between the face sticker and the first contour surface in the electric tool shown;

[0024] Figure 7 yes Figure 3 Enlarged view of center circle A.

[0025] Meaning of the reference numerals in the figures:

[0026] Power Tools / High Pressure Cleaner 100 Housing 1

[0027] Main body 11 Air inlet 111

[0028] Sinking part 112 Motor mounting part 12

[0029] Flange 121 Flange support surface 121a

[0030] Positioning seat 122 first positioning surface 122a

[0031] The second positioning surface 122b is flat against the positioning surface 122c

[0032] Inclined positioning surface 122d Slit 122e

[0033] Positioning slot 122f Air outlet 123

[0034] Clamping seat 124 Clamping protrusion 124a

[0035] First bonding surface 124b First adhesive surface 124c

[0036] The first window 124d holds the cavity 124e

[0037] Grip 13 Sole 14

[0038] Motor assembly 21 Motor housing 211

[0039] Stator 212 Motor shaft 213

[0040] Rotor 214 Fan 215

[0041] Transmission assembly 22 housing 221

[0042] Speed ​​reduction mechanism 222 Pump unit 3

[0043] Pump body 31 Pressure chamber 311

[0044] Plunger 32 Pressure booster 33

[0045] Water inlet 34 Water outlet 35

[0046] Water inlet valve 36 linkage mechanism 37

[0047] First arm 371 Second arm 372

[0048] Pivot 373 First check valve 38

[0049] Second one-way valve 39 trigger system 4

[0050] Trigger 41 Trigger lever 41a

[0051] Linkage rod 41b Pivot portion 411

[0052] Trigger lever 412 Switch 42

[0053] Switch body 421 Trigger button 422

[0054] Spring piece 423 Self-locking piece 43

[0055] Control system 5 Control circuit board 51

[0056] Controller component 511 Heat sink 512

[0057] Cavity 513 Display unit 52

[0058] Operation button 521 First indication area 522

[0059] Second indication area 523 battery pack 6

[0060] Battery pack button 61 Power switch 62

[0061] Battery indicator light 63 Cover 7

[0062] Straight section 71 Notch 711

[0063] Inclined section 72 Concave area 73

[0064] Bottom plate 731 Second joint surface 731a

[0065] Second adhesive surface 731b Second window 732

[0066] First stop surface 74 Second stop surface 75

[0067] Straight stop surface 751 Inclined stop surface 752

[0068] Clamping element 76 Clamping rib 761

[0069] Buckle 762 Anti-collision rib 763

[0070] First contour surface 78 Surface sticker 8

[0071] Second contour surface 81 Output portion 9 [Specific implementation method]

[0072] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back", etc., which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0073] See also Figures 1 to 3 As shown, an embodiment of the utility model relates to an electric tool 100, which is preferably a high-pressure cleaning machine 100, which is suitable for pressurizing an external water flow and spraying it outward to clean vehicles, courtyards, floors, etc.; the high-pressure cleaning machine 100 includes a housing 1, a drive system 2 installed in the housing 1, a pump unit 3 driven by the drive system 2, an output part 9 connected to the pump unit 3, and a battery pack 6 for supplying energy to the drive system 2, and the user can start the high-pressure cleaning machine 100 through the trigger system 4 and the control system 5.

[0074] In this embodiment, the housing 1 includes a main body 11 extending in the left-right direction, a motor mounting portion 12 extending upward from the upper end of the main body 11, a grip portion 13 extending downward from the lower end of the main body 11, and a foot 14 connected to the lower end of the grip portion 13. The motor mounting portion 12 has a flange 121 connected to the upper end of the main body 11, a positioning seat 122 connected to the upper side of the flange 121, and a flange support surface 121a provided at the connection between the flange 121 and the positioning seat 122; the grip portion 13 is in the shape of an elongated column, so that the user can hold it, and the grip portion 13 is arranged obliquely relative to the main body 11; and a battery pack 6 for providing energy for the high-pressure cleaning machine 100 is installed on the foot 14.

[0075] In this embodiment, the battery pack 6 is installed and released relative to the sole 14 through the battery pack button 61, and pressing the power switch 62 can light up the power indicator 63, and the power in the battery pack 6 is displayed through the power indicator 63. Optionally, the nominal voltage of the battery pack 6 can be greater than or equal to 10V and less than or equal to 20V, for example, the nominal voltage of the battery pack 6 can be 12V, 18V, 20V, etc. Optionally, the nominal voltage of the battery pack 6 can be greater than or equal to 20V and less than or equal to 100V, for example, the nominal voltage of the battery pack 6 can be 24V, 40V, 56V, 80V, etc.

[0076] Furthermore, the circumferential surface of the positioning seat 122 is defined as a first positioning surface 122a, and the first positioning surface 122a is provided with four positioning grooves 122f. Specifically, two positioning grooves 122f are respectively distributed on the front and rear sides of the first positioning surface 122a.

[0077] Please combine Figure 2 and Figure 3 As shown, the upper surface of the housing 1 is provided with a second positioning surface 122b. It should be noted that the second positioning surface 122b is not a plane extending in the left-right direction, but is formed by a combination of a straight positioning surface 122c extending in the left-right direction and an inclined positioning surface 122d extending from the right end of the straight positioning surface 122c to the lower right. Specifically, the straight positioning surface 122c is formed on the top surface of the motor mounting portion 12, and the inclined positioning surface 122d extends from the right end of the main body 11 and the right end of the motor mounting portion 12; further, the right end of the main body 11 protrudes more to the right than the right end of the motor mounting portion 12, and the right end of the main body 11 is inclined relative to the left-right direction.

[0078] In addition, slits 122e are provided on both the straight positioning surface 122c and the inclined positioning surface 122d.

[0079] Please combine Figure 2 and Figure 5As shown, a clamping seat 124 is provided on the above-mentioned inclined positioning surface 122d, and the clamping seat 124 is recessed on the inclined positioning surface 122d to form a clamping cavity 124e, and a clamping protrusion 124a is formed on the inner side of the clamping cavity 124e; specifically, the clamping protrusion 124a is a hollow frame, which is composed of a rectangular frame and a semicircular frame, and a first window 124d is formed on the inner side of the clamping protrusion 124a.

[0080] Furthermore, the circumferential outer surface of the clamping protrusion 124a is defined as the first bonding surface 124b, and the right side surface of the clamping protrusion 124a is defined as the first adhesive surface 124c.

[0081] See also Figure 3 As shown, the above-mentioned drive system 2 includes a motor assembly 21 arranged in the motor mounting portion 12 and a transmission assembly 22 arranged in the main body 11, and the transmission assembly 22 is connected to the lower end of the motor assembly 21; in this embodiment, the motor assembly 21 is an outer rotor motor, and includes a motor housing 211, a stator 212 installed in the motor housing 211, a rotor 214 connected to the motor housing 211, and a motor shaft 213 fixed to the rotor 214, the motor shaft 213 extends in the up and down directions, and the motor shaft 213 extends to the main body 11 and is connected to the transmission assembly 22.

[0082] Furthermore, the transmission assembly 22 is accommodated in the main body 11 , and includes a housing 221 and a reduction mechanism 222 installed in the housing 221 . The power generated by the rotation of the rotor 214 is transmitted to the reduction mechanism 222 of the reduction mechanism 22 through the motor shaft 213 .

[0083] In this embodiment, the pump unit 3 is driven by the transmission assembly 22. The pump unit 3 has a pump body 31, a pressure chamber 311 formed in the pump body 31 and extending in the left-right direction, a water inlet end 34 connected to the lower end of the pump body 31, a water outlet end 35 connected to the left end of the pump body 31, and a plunger 32 at least partially extending into the pressure chamber 311. The pressure chamber 311 is a place where the pump unit 3 pressurizes the external water flow. Specifically, the plunger 32 extends in the left-right direction, the plunger 32 is perpendicular to the motor shaft 213, the plunger 32 is connected to the speed reduction mechanism 222 of the transmission assembly 22 and reciprocates in the left-right direction; the right end of the plunger 32 is connected to a booster mechanism 33. In this embodiment, the booster mechanism 33 is preferably a coil spring. The plunger 32 is driven by the speed reduction mechanism 222 to make reciprocating motion in the pressure chamber 311. External water flows into the pressure chamber 311 from the water inlet end 34, flows through the pressure chamber 311, and flows out from the water outlet end 35. The reciprocating motion of the plunger 32 pressurizes the external water flow entering the pressure chamber 311.

[0084] Furthermore, the pump unit 3 is provided with a first one-way valve 38 between the water inlet end 34 and the pressure chamber 311, and a second one-way valve 39 between the pressure chamber 311 and the water outlet end 35; after the high-pressure cleaning machine 100 is started, the plunger 32 will reciprocate accordingly, and during the movement of the plunger 32 to the right, the first one-way valve 38 is opened, the second one-way valve 39 is closed, and the external water flows into the pressure chamber 311 through the water inlet end 34, and the boosting mechanism 33 is in an energy storage state due to compression; during the movement of the plunger 32 to the left, the first one-way valve 38 is closed, the second one-way valve 39 is opened, the boosting mechanism 33 is restored, and the stored energy acts on the plunger 32 to increase the pressure sprayed from the water outlet end 35.

[0085] In this embodiment, the output part 9 is a nozzle connected to the water outlet 35 of the pump unit 3 and connected to the left end of the main body 11 , and the external water flow discharged from the water outlet 35 is emitted outward through the nozzle.

[0086] In this embodiment, the water outlet 35 is disposed toward the left side of the main body 11 and the water outlet direction of the water outlet 35 is also disposed toward the left side, and the right end of the main body 11 is arranged obliquely relative to the water outlet direction of the water outlet 35 .

[0087] Please combine Figure 2 and Figure 3 As shown, the motor assembly 21 further includes a fan 215 installed at the upper end of the motor shaft 213. The housing 1 is provided with an air inlet 111 and an air outlet 123. The fan 215 rotates to form a cooling airflow, which enters from the air inlet 111, flows through the transmission assembly 22 and the motor assembly 21 in sequence, and flows out from the air outlet 123. Since the motor assembly 21 and the transmission assembly 22 generate a large amount of heat during high-speed movement, the housing 1 is provided with an air inlet 111 and an air outlet 123, and the fan 215 of the motor assembly 21 rotates to form a cooling airflow that enters from the air inlet 111 and flows out from the air outlet 123, so as to effectively dissipate heat from the motor assembly 21 and the transmission assembly 22.

[0088] In this embodiment, the air inlet 111 is provided at the lower side of the main body 11, the air outlet 123 is provided at the upper side of the first positioning surface 122a of the motor mounting portion 12, the fan 215 is a centrifugal fan, and the position of the air outlet 123 corresponds to the position of the fan 215, so that the cooling airflow can be smoothly discharged outward through the air outlet 123. Further, the pump unit 3 is accommodated in the main body 11 and the water inlet end 34 of the pump unit 3 extends downward, the main body 11 has a sinking portion 112 that at least partially accommodates the water inlet end 34, and the air inlet 111 is provided in the sinking portion 112, so that the cooling airflow can also flow through the pump unit 3 and effectively dissipate the heat of the pump unit 3.

[0089] See also Figure 2 and Figure 3 As shown, the trigger system 4 is installed in the grip 13, and the trigger system 4 includes a trigger 41 in the shape of a long rod and a switch 42 triggered by the trigger 41. In this embodiment, the switch 42 is preferably a micro switch. The switch 42 is installed in the grip 13, and the trigger 41 is installed on the housing 1 through a pivot 411. The user operates the trigger 41 to rotate the trigger 41 around the pivot 411. Further, the switch 42 includes a switch body 421 accommodated in the grip 13, a spring 423 and a trigger button 422 connected to the switch body 421, and a trigger rod 412 is provided on the side of the trigger 41 facing the switch 42. The trigger rod 412 can slide on the spring 423 of the switch 42 while the trigger 41 rotates, and presses the trigger button 422 through the spring 423, thereby triggering the switch 42.

[0090] In this embodiment, the sinking portion 112 and the sole 14 are spaced apart, and the trigger 41 is located between the sinking portion 112 and the sole 14 .

[0091] Please combine Figure 5 As shown, the control system 5 includes a control circuit board 51 housed in the main body 11 and a display unit 52 electrically connected to the control circuit board 51. In this embodiment, the display unit 52 is a display panel. The display unit 52 is disposed at the right end of the housing 1, and the display unit 52 is installed in the clamping cavity 124e, and the surface of the display unit 52 exposed from the clamping cavity 124e is flush with the first adhesive surface 124c; the display unit 52 includes a first indication area 522 for displaying the power information of the battery pack 6 and a second indication area 523 for displaying the working status information of the pump unit 3. The working status information of the pump unit 3 includes instantaneous pressure parameters when the high-pressure cleaning machine 100 is working.

[0092] Specifically, the control circuit board 51 is configured to obtain the power information of the battery pack 6 and the working status information of the pump unit 3 , and display the power information of the battery pack 6 and the working status information of the pump unit 3 through the display unit 52 .

[0093] In this embodiment, an operation button 521 is disposed at the lower end of the display portion 52 near the grip portion 13 . In this embodiment, the operation button 521 is preferably a membrane switch, and the first indication area 522 and the second indication area 523 are located above the operation button 521 .

[0094] In this embodiment, the switch 42 , the motor assembly 21 , the operation button 521 and the battery pack 6 are all electrically connected to the control circuit board 51 .

[0095] In this embodiment, the cooling airflow also flows through the control circuit board 51 to effectively dissipate heat for the control circuit board 51. Furthermore, a second air inlet may be provided at the location of the housing 1 where the control circuit board 51 is placed to further enhance the heat dissipation effect for the control circuit board 51.

[0096] The operation mode of the high pressure cleaning machine 100 is as follows: the user can first operate the trigger 41 and turn on the switch 42, and the switch 42 sends the triggered first trigger signal to the control circuit board 51. At the same time, the control circuit board 51 controls the first indication area 522 and the second indication area 523 on the display unit 52 to light up, and the high pressure cleaning machine 100 is in standby mode at this time; it should be noted that at this time, the first indication area 522 and the second indication area 523 will be displayed in a fuzzy form of "888" and "8888" instead of displaying specific parameter values. After the display unit 52 is activated, the user can then press the operation button 521 with the thumb, and the control circuit board 51 receives the second trigger signal from the operation button 521, and can control the motor assembly 21 to start. Further, after the control circuit board 51 starts the motor assembly 21, the first indication area 522 will display the actual power information of the battery pack 6, and the second indication area 523 will display the actual working status information of the pump unit 3.

[0097] In this embodiment, the trigger 41 and the switch 42 constitute at least a part of the first switch assembly, and the operation button 521 constitutes at least a part of the second switch assembly. In order to prevent the user from operating incorrectly and ensure the user's operating safety, in this embodiment, the control circuit board 51 needs to receive the first trigger signal from the first switch assembly and the second trigger signal from the second switch assembly before starting the motor assembly 21 and then starting the high-pressure cleaning machine 100. In other words, the user must perform at least two actions to start the machine, which effectively prevents the user from operating incorrectly and greatly increases the safety of use.

[0098] Preferably, the control circuit board 51 is configured to sequentially receive a first trigger signal from the first switch component and a second trigger signal from the second switch component, thereby starting the motor component 21. That is, the user needs to first operate the trigger 41 and then press the operation button 521 to start the motor component 21.

[0099] In order to further ensure the safety of the user when using the high pressure cleaning machine 100, the maintenance of the start state of the motor assembly 21 requires the user to continuously press the trigger 41 and trigger the switch 42. That is, if the user releases the trigger 41 during use, the control circuit board 51 receives the closing signal of the switch 42, the motor assembly 21 will stop, and the high pressure cleaning machine 100 will also stop. However, after the operation button 521 is pressed once, it does not need to be pressed continuously, and the start state of the motor assembly 21 can be maintained.

[0100] In this embodiment, the high-pressure cleaning machine 100 has a first driving mode for outputting low-pressure water flow and a second driving mode for outputting high-pressure water flow. After the control circuit board 51 starts the motor assembly 21, continue to press the operation button 521 to switch between the first driving mode and the second driving mode.

[0101] Preferably, when the control circuit board 51 starts the motor assembly 21, it runs in the first driving mode by default, so that when the user uses the high-pressure cleaning machine 100, the low-pressure water flow is output by default, ensuring the user's safety.

[0102] See also Figure 2 As shown, the high pressure cleaning machine 100 includes a self-locking member 43 installed on the trigger 41, and the self-locking member 43 has a locked state and an unlocked state. In the locked state, the trigger 41 cannot move, so the switch 42 cannot be triggered; in the unlocked state, the trigger 41 can move freely, so the switch 42 can be triggered. Therefore, the user needs to perform three actions to start the machine, that is, first press the self-locking member 43 to make the self-locking member 43 in the unlocked state, and then operate the trigger 41 and press the operation button 521 to start the high pressure cleaning machine 100, which further reduces the possibility of user misoperation and increases the safety of use.

[0103] See also Figure 3 As shown, the high pressure cleaning machine 100 includes a linkage mechanism 37 connected between the water inlet valve 36 and the first switch assembly. When the first switch assembly is triggered, that is, when the user operates the trigger 41, the linkage mechanism 37 is also synchronously driven to move to open the water inlet valve 36. Therefore, the user can open the water inlet valve 36 while triggering the switch 42 through one action (i.e., operating the trigger 41), which makes the operation simpler and provides a good user experience.

[0104] Specifically, the trigger 41 includes a trigger rod 41a and a linkage rod 41b installed on the trigger rod 41a, and the trigger rod 412 is also installed on the trigger rod 41a. The trigger rod 41a is installed on the housing 1 through a pivot portion 411, and the linkage rod 41b and the trigger rod 412 are located on both sides of the pivot portion 411; the trigger rod 41a is operated to simultaneously drive the trigger rod 412 to trigger the switch 42, and drive the linkage mechanism 37 to move via the linkage rod 41b.

[0105] See also Figure 7 As shown, the linkage mechanism 37 includes a first arm 371 connected to the linkage rod 41b, a second arm 372 connected to the water inlet valve 36, and a pivot 373 located between the first arm 371 and the second arm 372. The movement of the linkage rod 41b drives the first arm 371 and the second arm 372 to rotate around the pivot 373.

[0106] In this embodiment, the linkage rod 41b protrudes from the left end of the trigger rod 41a toward the linkage mechanism 37, and the linkage rod 41b is located between the first arm 371 and the transmission assembly 22. Further, the linkage mechanism 37 is accommodated in the sinking portion 112, and the linkage mechanism 37 is located on the right side of the water inlet end 34 and on the lower side of the plunger 32.

[0107] In this embodiment, the right side of the water inlet valve 36 has a valve stem 361, which extends in the left-right direction. The second arm 372 of the linkage mechanism 37 abuts against the valve stem 361 and drives the valve stem 361 to move. When the valve stem 361 moves to the left, the water inlet valve 36 will be opened.

[0108] See also Figure 3 As shown, the control circuit board 51 is received and installed in the main body 11 and at least partially extends to the motor mounting portion 12. Specifically, the right end of the transmission assembly 22 is spaced apart from the right end of the main body 11 to form a first storage space, and the right end of the motor assembly 21 is spaced apart from the right end of the motor mounting portion 12 to form a second storage space. The first storage space and the second storage space are connected, and the control circuit board 51 is received in the first storage space and the second storage space. By reasonably setting the placement position of the control circuit board 51, the internal space of the high-pressure cleaning machine 100 can be fully utilized, and the layout is more reasonable.

[0109] Furthermore, the right end of the main body 11 and the right end of the motor mounting portion 12 are arranged obliquely relative to the left and right directions, and the display portion 52 extends on the right end surfaces of the main body 11 and the motor mounting portion 12 to facilitate the user to observe the display portion 52, and the control circuit board 51 is arranged obliquely on the end side of the transmission assembly 22 relative to the motor shaft 213, and the control circuit board 51 is located between the transmission assembly 22 and the display portion 52. Further, the control circuit board 51 is located between the operation button 521 and the trigger 41.

[0110] Furthermore, the display portion 52 is arranged obliquely relative to the motor shaft 213 , and the control circuit board 51 is located between the motor shaft 213 and the display portion 52 .

[0111] Furthermore, the axis of the output portion 9 and the axis of the plunger 32 extend through the control circuit board 51 .

[0112] In this embodiment, the control circuit board 51 includes a controller component 511 electrically connected to the motor component 21 and a heat sink 512 for cooling the controller component 511. The heat sink 512 has a cavity 513 for accommodating the controller component 511. The opening of the cavity 513 faces away from the motor component 21 and the transmission component 22 to facilitate the routing of internal wires of the high-pressure cleaning machine 100. In addition, the heat generated by the controller component 511 is radiated outward through the heat sink 512. The heat dissipation surface of the heat sink 512 is set toward the transmission component 22, so that the cooling airflow can flow smoothly through the heat dissipation surface of the heat sink 512 to effectively improve the heat dissipation efficiency of the heat sink 512.

[0113] In this embodiment, the display unit 52 , the switch 42 , the motor assembly 21 , the operation button 521 , and the battery pack 6 are all electrically connected to the controller assembly 511 .

[0114] In this embodiment, the switch 42 is disposed adjacent to the lower side of the controller component 511 to reduce the wiring distance between the switch 42 and the controller component 511 .

[0115] See also Figure 2 As shown, the operation button 521 and the trigger 41 are located on both sides of the grip 13. When the user grasps the grip 13 with his palm, the trigger 41 and the operation button 521 can be operated with only one hand, which makes the operation more comfortable.

[0116] In this embodiment, the display unit 52 and the operation button 521 are arranged at the right end of the main body 11 , and the display unit 52 , the operation button 521 and the output unit 9 are respectively located on both sides of the main body 11 , and the axis of the output unit 9 does not extend through the display unit 52 .

[0117] Furthermore, the axis of the plunger 32 does not extend through the display portion 52 .

[0118] See also Figure 1 and Figure 2 As shown, since the motor assembly 21 of the high-pressure cleaning machine 100 is close to the air outlet 123, when the user performs cleaning operations, the high-speed sprayed water will splash everywhere, causing the water to easily enter the motor assembly 21 from the air outlet 123, thereby affecting the normal operation of the high-pressure cleaning machine 100. Therefore, in this embodiment, the high-pressure cleaning machine 100 includes a cover shell 7 installed on the top of the housing 1, the cover shell 7 is sleeved on the motor mounting portion 12 and the cover shell 7 shields the air outlet 123, so that the water cannot enter the interior of the high-pressure cleaning machine 100 from the air outlet 123, which is beneficial to improving the service life of the high-pressure cleaning machine 100.

[0119] It should be noted that, although the air outlet 123 is shielded by the housing 7, there is still a certain gap between the inner wall of the housing 7 and the air outlet 123, and the cooling airflow discharged from the air outlet 123 can be discharged to the outside through the gap. Furthermore, a notch 711 is provided on the housing 7, and the cooling airflow discharged from the air outlet 123 flows out from the notch 711, and the notch 711 ensures the heat dissipation performance of the high-pressure cleaning machine 100.

[0120] See also Figure 2 and Figure 4 As shown, the cover shell 7 has a straight section 71 extending in the left-right direction, an inclined section 72 extending downward from the straight section 71, and a recessed area 73 extending inward from the surface of the inclined section 72; the recessed area 73 has a bottom plate 731 and a second window 732 penetrating the bottom plate 731, and the contour of the bottom plate 731, the contour of the second window 732 and the contour of the clamping protrusion 124a are the same, and the inner edge of the bottom plate 731 is defined as the second joint surface 731a and the right side surface of the bottom plate 731 is defined as the second adhesive surface 731b.

[0121] Furthermore, the inner circumferential surface of the above-mentioned cover shell 7 is defined as the first stop surface 74 and the inner bottom surface of the cover shell 7 perpendicular to the first stop surface 74 is defined as the second stop surface 75, the second stop surface 75 is divided into a straight stop surface 751 extending in the left and right directions and an inclined stop surface 752 extending from the straight stop surface 751 to the lower right, the straight stop surface 751 is the inner bottom surface of the straight section 71; the first stop surface 74 and the second stop surface 75 are also provided with a buckle element 76, specifically, the buckle element 76 is divided into a buckle 762 protruding from the inside of the first stop surface 74 and a buckle rib 761 extending from the first stop surface 74 to the second stop surface 75; in addition to the buckle element 76, a plurality of anti-collision ribs 763 are also provided on the first stop surface 74 and the second stop surface 75.

[0122] Next, the assembly of the cover 7 and the housing 1 will be described. Please continue to refer to Figures 2 to 6 When the cover shell 7 is installed to the casing 1, the lower end surface of the cover shell 7 abuts against the flange support surface 121a, the first stop surface 74 covers the first positioning surface 122a, and the second stop surface 75 covers the second positioning surface 122b; and, the clamping rib 761 is inserted into the slit 122e, the buckle 762 is engaged with the positioning groove 122f, and the anti-collision rib 763 abuts against the first positioning surface 122a and the second positioning surface 122b.

[0123] In this embodiment, when the cover shell 7 is installed to the casing 1, the first window 124d is located on the inner side of the second window 732, and the display portion 52 is exposed from the first window 124d and the second window 732; and, the first joint surface 124b and the second joint surface 731a are abutted, and the first adhesive surface 124c, the second adhesive surface 731b and the surface of the display portion 52 are located in the same plane; the area formed by the first adhesive surface 124c, the second adhesive surface 731b and the surface of the display portion 52 is defined as the first contour surface 78, that is, the first contour surface 78 is the surface area on the inner side of the recessed area 73 after the cover shell 7 is installed to the casing 1.

[0124] Since the cover 7 and the housing 1 are connected only by the ribs 761 and the buckles 762, the cover 7 will inevitably shake when the high-pressure cleaning machine 100 is in operation. Therefore, in this embodiment, a surface sticker 8 is provided to further tighten the cover 7. Figure 2 and Figure 6 The surface sticker 8 has a second contour surface 81 formed by a combination of a rectangle and a semicircle. The shape of the second contour surface 81 is the same as the shape of the first contour surface 78 and the area of ​​the second contour surface 81 is the same as the area of ​​the first contour surface 78. That is to say, if the surface sticker 8 is placed in the recessed area 73, the surface sticker 8 will completely cover the first window 124d, the second window 732 and the display portion 52, and the second contour surface 81 and the first contour surface 78 completely overlap.

[0125] In addition, the side of the surface sticker 8 that is in contact with the first contour surface 78 must also be sticky. When the surface sticker 8 is attached to the first contour surface 78, the first adhesive surface 124c, the second adhesive surface 731b and the surface of the display unit 52 are respectively adhered to the surface sticker 8, so that the shaking between the cover shell 7 and the housing 1 is greatly reduced; further, the surface sticker 8 must be made of a light-transmitting material, so that after the surface sticker 8 is installed and fixed, the information on the display unit 52 can be transmitted through the surface sticker 8 in the form of bright light for the user to view.

[0126] The utility model is not limited to the above specific implementations. Those skilled in the art can easily understand that there are many alternatives to the power tool of the utility model without departing from the principle and scope of the utility model. The protection scope of the utility model shall be based on the content of the claims.

Claims

1. An electric tool, comprising a housing, a motor assembly mounted on the housing, a transmission assembly connected to the motor assembly, and a control circuit board for controlling the motor assembly, wherein the housing comprises a main body extending in the left-right direction and a gripping portion connected to the lower side of the main body; characterized in that: The electric tool comprises a first switch assembly and a second switch assembly connected to the control circuit board, the first switch assembly is mounted on the grip portion and has a trigger for a user to operate, the second switch assembly is arranged on the main body portion and has an operation button for a user to operate, the operation button and the trigger are located on both sides of the grip portion; The control circuit board is configured to receive a first trigger signal from the first switch assembly and a second trigger signal from the second switch assembly to start the motor assembly.

2. The electric tool according to claim 1, characterized in that: The first switch assembly includes a switch installed on the grip portion, the switch is connected to the control circuit board, and the trigger is operated to trigger the switch.

3. The electric tool according to claim 2, characterized in that: The trigger comprises a trigger rod and a trigger rod installed on the trigger rod. The trigger rod is installed on the housing through a pivot portion. The trigger rod is operated to drive the trigger rod to trigger the switch.

4. The electric tool according to claim 1, characterized in that: The control circuit board is installed on the main body, and the control circuit board is located between the operation button and the trigger.

5. The electric tool according to claim 1, characterized in that: The control circuit board is configured to sequentially receive a first trigger signal from the first switch component and a second trigger signal from the second switch component, thereby starting the motor component.

6. The electric tool according to claim 5, characterized in that: The electric tool comprises a self-locking member mounted on the trigger, the self-locking member having a locked state and an unlocked state, in which the trigger cannot move; In the unlocked state, the trigger is free to move.

7. The electric tool according to claim 1, characterized in that: The gripping portion is arranged obliquely relative to the main body portion, and the housing includes a sole arranged at the end of the gripping portion, and a battery pack providing energy for the electric tool is installed on the sole.

8. The electric tool according to claim 7, characterized in that: The right end of the main body is arranged obliquely relative to the left-right direction. The electric tool includes a display unit arranged at the right end of the main body. The display unit is electrically connected to the control circuit board.

9. The electric tool according to claim 8, characterized in that: The display unit includes a first indication area for displaying power information of the battery pack. After the control circuit board starts the motor assembly, the first indication area displays the power information of the battery pack.

10. The electric tool according to claim 1, characterized in that: The operation button is arranged at the right end of the main body, the electric tool comprises an output part connected to the left end of the main body, and the operation button and the output part are located at both sides of the main body.

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