Electric tool

Abstract

The invention relates to the technical field of abrasion cutting tools, in particular to an electric tool. The electric tool comprises a shell, a grinding and cutting assembly, a spraying assembly, a water pipe and an electric control assembly. The shell is provided with a wiring channel. The grinding and cutting assembly is assembled on the shell; the spraying assembly is assembled on the grinding and cutting assembly and used for spraying at the grinding and cutting assembly; the water pipe penetrates through the wiring channel, one end of the water pipe is connected with the spraying assembly, the other end of the water pipe is used for being connected with a water source outside the shell, and the electric control assembly is assembled in the assembling cavity; the water pipe is connected with the electric control assembly and used for taking away heat generated by the electric control assembly. According to the electric tool, the electric control unit in the shell can be reliably cooled, so that the problem that the electric control unit is damaged due to temperature rise is solved, and the service life of the electric control unit is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding and cutting tools, and more particularly, to a power tool. Background Art

[0002] During grinding and cutting operations with power tools such as slotting machines and angle grinders, heat is generated at the cutting head of the power tool, and heat is also generated by the electronic control components and motors (electronic control units) disposed within the housing of the power tool. In related technologies, a spray assembly is provided at the cutting head to use the water mist ejected by the spray assembly to reduce dust and lower the temperature at the cutting head.

[0003] However, the power tools provided by related technologies cannot reliably cool the electronic control units within the housing, and it is easy for the electronic control units to be damaged and have their service life shortened due to the temperature rise of the electronic control units. Summary of the Invention

[0004] An object of the present invention is to provide a power tool that can reliably cool the electronic control units within the housing, so as to improve the problem of damage to the electronic control units due to temperature rise, and is beneficial to extending the service life of the electronic control units.

[0005] Embodiments of the present invention are implemented as follows:

[0006] In a first aspect, the present invention provides a power tool, comprising:

[0007] A housing provided with a wire routing channel and an assembly cavity;

[0008] A grinding and cutting assembly assembled to the housing;

[0009] A spray assembly assembled to the grinding and cutting assembly for spraying at the grinding and cutting assembly;

[0010] A water pipe passing through the wire routing channel, with one end of the water pipe connected to the spray assembly, and the other end of the water pipe for connecting to a water source outside the housing, and

[0011] An electronic control assembly assembled to the assembly cavity; wherein, the water pipe is connected to the electronic control assembly for carrying away the heat generated by the electronic control assembly.

[0012] In an alternative embodiment, the electronic control assembly includes electrical components and a heat dissipation member disposed on the side of the electrical components; the water pipe is connected to the heat dissipation member so that the liquid conveyed by the water pipe can flow through the heat dissipation member and then be conveyed to the spray assembly.

[0013] In an alternative embodiment, the water pipe includes a first section of pipe and a second section of pipe. One end of the first section of pipe is for connecting to a water source outside the housing, the other end of the first section of pipe is connected to the heat dissipation member, one end of the second section of pipe is connected to the heat dissipation member, and the other end of the second section of pipe is connected to the spray assembly.

[0014] In an alternative embodiment, the power tool further includes a motor, and the housing is further provided with an air duct and an air inlet communicating with the air duct. The motor is assembled in the assembly cavity, and the air duct is configured to be able to convey air to the motor.

[0015] In an alternative embodiment, the electronic control assembly is located between the motor and the air inlet. The air duct includes a first channel and a second channel distributed on both sides of the electronic control assembly. Both the first channel and the second channel communicate with the air inlet, and both the first channel and the second channel are configured to be able to convey air to the motor.

[0016] In an alternative embodiment, the assembly cavity communicates with the air inlet so that the air entering the assembly cavity from the air inlet can flow through the electronic control assembly and the motor in sequence.

[0017] In an alternative embodiment, the power tool further includes a motor, and the motor is assembled in the housing; the grinding and cutting assembly includes a protective cover and a grinding and cutting head, the motor is connected to the grinding and cutting head, and the protective cover is connected to the housing and covers the outside of the grinding and cutting head;

[0018] The housing is further provided with a first wire outlet, the spraying assembly is assembled on the protective cover, and one end of the water pipe passes through the first wire outlet and is connected to the spraying assembly.

[0019] In an alternative embodiment, the housing is further provided with a second wire outlet, the other end of the water pipe is exposed from the second wire outlet, and the second wire outlet is farther from the protective cover than the first wire outlet.

[0020] In an alternative embodiment, the housing includes a handle and a housing body connected to the handle. The handle is provided with a wire routing channel, the housing body is provided with an assembly cavity, and the grinding and cutting assembly is assembled in the housing body.

[0021] In a second aspect, the present invention further provides a power tool, including:

[0022] A housing, the housing is provided with an assembly cavity, an air duct and an air inlet;

[0023] An electronic control assembly, the electronic control assembly is assembled in the assembly cavity; and,

[0024] A motor, the motor is assembled in the assembly cavity; wherein,

[0025] The air duct includes a first channel and a second channel. Both the first channel and the second channel communicate with the air inlet. The first channel and the second channel are distributed on both sides of the electronic control assembly, and both the first channel and the second channel are configured to be able to convey air to the motor.

[0026] In an alternative embodiment, the assembly cavity communicates with the air inlet so that the air entering the assembly cavity from the air inlet can flow through the electronic control assembly and the motor in sequence.

[0027] The beneficial effects of the power tool according to the embodiments of the present invention include: A power tool provided by an embodiment of the present invention includes a housing, a grinding and cutting assembly, a spraying assembly, a water pipe, and an electronic control assembly. The grinding and cutting assembly is assembled in the housing; the spraying assembly is assembled on the grinding and cutting assembly for spraying at the grinding and cutting assembly; the housing is provided with a wire routing channel; the water pipe is passed through the wire routing channel, and one end of the water pipe is connected to the spraying assembly, and the other end of the water pipe is used to connect to a water source outside the housing. The electronic control assembly is assembled in the assembly cavity; wherein, the water pipe is connected to the electronic control assembly for taking away the heat generated by the electronic control assembly. The water pipe can not only supply water to the spraying assembly for spraying at the grinding and cutting assembly to achieve dust reduction and temperature reduction at the grinding and cutting assembly, but also enable the water (or coolant) conveyed by the water pipe to flow through the electronic control assembly connected thereto, taking away the heat generated by the electronic control assembly to achieve the temperature reduction of the electronic control assembly, improving the problem that the electronic control assembly is damaged due to temperature rise, and being beneficial to extending the service life of the electronic control assembly; moreover, arranging the water pipe for supplying water to the spraying assembly inside the housing can improve the problem that the externally placed water pipe is easily hooked, and improve the problem that the operation of the power tool is affected due to the water pipe being hooked.

[0028] Another power tool provided by an embodiment of the present invention includes a housing, an electronic control assembly, and a motor. The housing is provided with an assembly cavity, an air duct, and an air inlet; the electronic control assembly and the motor are both assembled in the assembly cavity; the air duct includes a first channel and a second channel. The first channel and the second channel are both communicated with the air inlet, and the first channel and the second channel are distributed on both sides of the electronic control assembly and are both configured to be able to convey air to the motor. Arranging the first channel and the second channel on both sides of the electronic control assembly to directly lead the air to the motor ensures that the air conveyed by the first channel and the second channel does not flow through the electronic control assembly, thereby avoiding the air conveyed by the first channel and the second channel taking away the heat of the electronic control assembly and then flowing to the motor after heating up, thus ensuring the reliability of the motor cooling, improving the problem that the motor is damaged due to temperature rise, and being beneficial to extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of the power tool in the first perspective according to the embodiment of the present invention;

[0031] Figure 2 It is a schematic structural diagram of the power tool in the second perspective according to the embodiment of the present invention;

[0032] Figure 3Schematic diagram of a partial structure of the power tool in an embodiment of the present invention;

[0033] Figure 4 Cross-sectional view of a partial structure of the power tool in an embodiment of the present invention.

[0034] Icons: 010 - Power tool; 100 - Housing; 101 - Wiring channel; 102 - Assembly cavity; 103 - First wire outlet; 104 - Second wire outlet; 105 - Air inlet; 110 - Air duct; 111 - First channel; 112 - Second channel; 120 - Handle; 121 - First section; 122 - Second section; 123 - Third section; 124 - Fourth section; 125 - Wire winding post; 126 - First handle; 127 - Second handle; 130 - Machine shell; 131 - End shell; 132 - Shell body; 133 - First shell; 134 - Second shell; 200 - Grinding and cutting assembly; 210 - Protective cover; 220 - Grinding and cutting head; 300 - Spraying assembly; 400 - Water pipe; 410 - First section of pipe; 411 - First sub-pipe; 412 - Second sub-pipe; 413 - Three-way connector; 420 - Second section of pipe; 430 - Third section of pipe; 500 - Electric control assembly; 510 - Electrical components; 520 - Heat sink; 600 - Motor. Detailed implementation manners

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0037] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figure 1 and Figure 2 This embodiment provides an electric tool 010, which may be a slotting machine or an angle grinder, etc. The slotting machine will be taken as an example for detailed description.

[0041] The electric tool 010 includes a housing 100, a grinding and cutting assembly 200, and a spray assembly 300. The grinding and cutting assembly 200 is assembled on the housing 100, and the spray assembly 300 is assembled on the grinding and cutting assembly 200 for spraying at the grinding and cutting assembly 200. In this way, when the grinding and cutting assembly 200 is used for grinding, the spray assembly 300 can be used to spray at the grinding and cutting assembly 200, so as to achieve the purpose of dust reduction and temperature reduction by using the sprayed water mist.

[0042] For further information, please refer to Figure 3 The housing 100 is provided with a wiring channel 101, and the electric tool 010 further includes a water pipe 400, which is arranged in the wiring channel 101, and one end of the water pipe 400 is connected to the spray assembly 300, and the other end of the water pipe 400 is used to connect to a water source outside the housing 100. In this way, the water pipe 400 for supplying water to the spray assembly 300 is arranged inside the housing 100, which can improve the problem that the water pipe 400 is easily hooked when it is placed outside, and improve the problem that the operation of the electric tool 010 is affected by the hooking of the water pipe 400.

[0043] Please refer to Figure 3, the power tool 010 of this embodiment further includes an electronic control component 500 and a motor 600. The housing 100 is further provided with an assembly cavity 102. Both the electronic control component 500 and the motor 600 are assembled in the assembly cavity 102, and the electronic control component 500 is electrically connected to the motor 600. The motor 600 is drivingly connected to the grinding and cutting component 200 for driving the grinding and cutting component 200 to operate. Assembling both the electronic control component 500 and the motor 600 in the assembly cavity 102 can protect the electronic control component 500 and the motor 600 by the housing 100, and improve the problem that the electronic control component 500 and the motor 600 are easily damaged by collision.

[0044] It should be understood that in other embodiments, only the electronic control component 500 can be assembled in the assembly cavity 102. The motor 600 is drivingly connected to the grinding and cutting component 200 and is assembled outside the housing 100.

[0045] Optionally, the water pipe 400 is connected to the electronic control component 500 for taking away the heat generated by the electronic control component 500. The water pipe 400 can not only supply water to the spray component 300 to spray at the grinding and cutting component 200 to achieve dust reduction and temperature reduction at the grinding and cutting component 200, but also enable the water (or coolant) conveyed by the water pipe 400 to flow through the electronic control component 500 connected thereto, taking away the heat generated by the electronic control component 500 to achieve the temperature reduction of the electronic control component 500, improving the problem that the electronic control component 500 is damaged due to temperature rise, and being beneficial to extending the service life of the electronic control component 500.

[0046] Furthermore, the electronic control component 500 includes an electrical component 510 and a heat dissipation member 520 disposed on the side of the electrical component 510; disposing the heat dissipation member 520 on the side of the electrical component 510 can improve the heat dissipation effect of the electrical component 510 and avoid damage to the electrical component 510 caused by high temperature.

[0047] Of course, in other embodiments, the electronic control component 500 may only include the electrical component 510 without the heat dissipation member 520.

[0048] Still further, the heat dissipation member 520 is a water-cooled heat sink, and the water pipe 400 is connected to the heat dissipation member 520 so that the liquid conveyed by the water pipe 400 can flow through the heat dissipation member 520 and then be conveyed to the spray component 300. In this way, when the liquid conveyed in the water pipe 400 flows through the heat dissipation member 520, it can take away the heat of the heat dissipation member 520 and part of the electrical component 510, further improving the effect of heat dissipation and temperature reduction on the electrical component 510, and being beneficial to extending the service life of the electrical component 510.

[0049] It should be noted that the above electrical component 510 includes a circuit board, a capacitor, etc., which is similar to the electrical component 510 in the power tool 010 provided by the related art and will not be elaborated here.

[0050] It should be understood that in other embodiments, the electronic control component 500 may only include the electrical component 510 and is not configured with the heat dissipation component 520. The water pipe 400 can be directly connected to the outside of the electrical component 510 by connecting components such as clamps and cable ties, so that the coolant flowing through the water pipe 400 can directly take away the heat generated by the electrical component 510.

[0051] Optionally, a heat dissipation flow channel is provided inside the heat dissipation component 520, and the water pipe 400 communicates with the heat dissipation flow channel, so that the coolant conveyed in the water pipe 400 can enter the heat dissipation flow channel and then output from the heat dissipation flow channel.

[0052] Further, the water pipe 400 includes a first section of pipe 410 and a second section of pipe 420. One end of the first section of pipe 410 is used to connect to a water source outside the housing 100, and the other end of the first section of pipe 410 is connected to the heat sink. One end of the second section of pipe 420 is connected to the heat sink, and the other end of the second section of pipe 420 is connected to the spray assembly 300. In this way, after the coolant conveyed by the first section of pipe 410 enters the heat dissipation component 520, it is output from the second section of pipe 420 and conveyed to the spray assembly 300 through the second section of pipe 420, which can ensure that the coolant reliably flows through the heat dissipation component 520, takes away part of the heat of the heat dissipation component 520 and the electrical component, and improves the heat dissipation effect of the electrical component.

[0053] Still further, the heat dissipation component 520 is provided with an inlet and an outlet, both of which communicate with the heat dissipation flow channel. The inlet and the outlet are distributed at both ends of the heat dissipation component 520 along the length extension direction of the heat dissipation component 520. The first section of pipe 410 is connected to the inlet, and the second section of pipe 420 is connected to the outlet. In this way, the coolant in the first section of pipe 410 can enter the heat dissipation flow channel from the inlet, flow along the length extension direction of the heat dissipation component 520, and then flow into the second section of pipe 420 from the outlet, so as to more reliably take away the heat of the heat dissipation component 520 and the electrical component 510 and ensure a better heat dissipation effect.

[0054] Optionally, in some embodiments, the water pipe 400 further includes a third section of pipe 430, the first section of pipe 410 includes a first sub-pipe 411, a second sub-pipe 412, and a three-way connector 413 connecting the first sub-pipe 411 and the second sub-pipe 412, one end of the first sub-pipe 411 away from the three-way connector 413 is used to connect to the water source outside the housing 100, one end of the second sub-pipe 412 away from the three-way connector 413 is connected to the heat sink 520, one end of the third section of pipe 430 is connected to the three-way connector 413, and the other end is connected to the spray assembly 300. In this way, a part of the coolant supplied by the first sub-pipe 411 flows into the heat sink 520, dissipates heat from the heat sink 520 and the electrical component 510, and then is transported to the spray assembly 300 through the second section of pipe 420, and the other part is directly transported to the spray assembly 300 through the third section of pipe 430, which is conducive to using spray dust reduction while ensuring a better cooling effect at the grinding and cutting assembly 200.

[0055] It should be understood that in other embodiments, the first section of the pipeline 410 includes a first sub-pipeline 411 and at least two second sub-pipelines 412 connected to the first sub-pipeline 411 through a multi-way connector, one end of the first sub-pipeline 411 away from the three-way connector 413 is used to connect to the water source outside the housing 100, and one end of the at least two second sub-pipelines 412 away from the multi-way connector is connected to the heat sink 520, and the connection points of the at least two second sub-pipelines 412 and the heat sink 520 are spaced apart; the water pipe 400 includes at least one second section of the pipeline 420 connected between the heat sink 520 and the spray assembly 300. In this way, the efficiency of the coolant entering the heat sink 520 and the efficiency of the coolant spreading and flowing through the heat dissipation channel in the heat sink 520 can be improved through multiple second sub-pipelines 412, thereby improving the efficiency of taking away the heat from the heat sink 520 and the electrical component 510, and ensuring a better heat dissipation effect.

[0056] Alternatively, in some other embodiments, the water pipe 400 only includes a first section of the pipe 410 and a second section of the pipe 420, and the first section of the pipe 410 and the second section of the pipe 420 are directly connected, that is, the two are not connected through the heat sink 520, so that the coolant provided by the first section of the pipe 410 is directly delivered to the second section of the pipe 420, and then delivered to the spray assembly 300 through the second section of the pipe 420.

[0057] Please continue to refer to Figure 3 The grinding and cutting assembly 200 of this embodiment includes a protective cover 210 and a grinding and cutting head 220. The grinding and cutting head 220 is a cutting saw blade. The motor 600 is transmission-connected to the grinding and cutting head 220 for driving the grinding and cutting head 220 to rotate. The protective cover 210 is connected to the housing 100 and is disposed on the outside of the grinding and cutting head 220. The setting of the protective cover 210 can reduce the splashing of waste materials during cutting and other protective effects.

[0058] It should be noted that according to the differences of specific power tools 010, the corresponding grinding and cutting heads 220 are also different. For example, when the power tool 010 is an angle grinder, the grinding and cutting head 220 is an angle grinder head.

[0059] Furthermore, the housing 100 is also provided with a first wire outlet 103. The spray assembly 300 is assembled to the protective cover 210. One end of the water pipe 400 passes through the first wire outlet 103 and is connected to the spray assembly 300. Assembling the spray assembly 300 to the protective cover 210 can protect the part of the water pipe 400 passing through the housing 100 by using the protective cover 210, so as to improve the problem that the water pipe 400 is accidentally worn or cut by the grinding and cutting head 220.

[0060] Optionally, the spray assembly 300 includes a nozzle, and the water pipe 400 passing through the first wire outlet 103 is connected to the nozzle; among them, the number of nozzles and the number of the first wire outlets 103 provided can be the same as the number of pipes passing through the housing 100. For example: Figure 2 and Figure 3 In the embodiment where the shown water pipe 400 includes a second section pipe 420 and a third section pipe 430, the spray assembly 300 includes two nozzles. The housing 100 is provided with two first wire outlets 103. The second section pipe 420 passes through one of the first wire outlets 103 and is connected to one of the nozzles. The third section pipe 430 passes through the other first wire outlet 103 and is connected to the other nozzle. The two nozzles are respectively located on both sides of the protective cover 210, so as to spray from the opposite sides of the grinding and cutting head 220, improving the dust reduction and cooling effects.

[0061] Of course, in some other embodiments, only one first wire outlet 103 can be provided, so that all the pipes connected to each nozzle pass through the same first wire outlet 103 and out of the housing 100.

[0062] Still further, please continue to refer to Figure 3 , the housing 100 is also provided with a second wire outlet 104. The other end of the water pipe 400 is exposed from the second wire outlet 104, and the second wire outlet 104 is farther from the protective cover 210 than the first wire outlet 103. With such a setting, one end of the water pipe 400 for connecting to the water source outside the housing 100 can extend out of the housing 100 from the end far from the protective cover 210 and the grinding and cutting head 220, thereby improving the problem that the exposed part of the water pipe 400 is accidentally worn by the grinding and cutting head 220.

[0063] It should be noted that the other end of the water pipe 400 is exposed from the second outlet 104, which may specifically mean that the other end of the water pipe 400 passes through the shell 100 from the second outlet 104, that is, the end of the first section of the pipe 410 away from the heat sink 520 passes through the shell 100 from the second outlet 104; or, it may also mean that the other end of the water pipe 400 is plugged into the second outlet 104, and is flush with the second outlet 104, or is retracted relative to the second outlet 104, so that only the end of the water pipe 400 is exposed from the second outlet 104 and can be connected to the water supply pipe 400 on the external water source.

[0064] In this embodiment, please refer to Figure 1 and Figure 4 The housing 100 is also provided with an air duct 110 and an air inlet 105 connected to the air duct 110 . The air duct 110 is configured to transport air to the motor 600 for dissipating heat from the motor 600 .

[0065] Furthermore, the motor 600 and the air inlet 105 are respectively located at the two ends of the length extension direction of the shell 100, the shell 100 is provided with an air outlet, and the air outlet is distributed close to the motor 600, the electronic control component 500 is located between the motor 600 and the air inlet 105, and the air duct 110 includes a first channel 111 and a second channel 112 distributed on both sides of the electronic control component 500, the first channel 111 and the second channel 112 are both connected to the air inlet 105, and the first channel 111 and the second channel 112 are both configured to deliver air to the motor 600. By configuring the first channel 111 and the second channel 112, the amount of air delivered to the motor 600 can be increased, thereby improving the heat dissipation effect; more importantly, the first channel 111 and the second channel 112 are arranged on both sides of the electric control component 500 to directly guide the air to the motor 600, thereby ensuring that the wind delivered by the first channel 111 and the second channel 112 will not flow through the electric control component 500, thereby avoiding the wind delivered by the first channel 111 and the second channel 112 taking away the heat of the electric control component 500 and flowing to the motor 600 after heating, thereby ensuring the reliability of cooling the motor 600, improving the problem of damage to the motor 600 due to temperature rise, and helping to extend the service life of the motor 600.

[0066] Furthermore, the assembly cavity 102 is connected to the air inlet 105, so that the air entering the assembly cavity 102 from the air inlet 105 can flow through the electric control component 500 and the motor 600 in sequence. In this way, air can be blown to the motor 600 through the first channel 111, the second channel 112 and the assembly cavity 102 at the same time, thereby improving the heat dissipation effect of the motor 600 and ensuring the heat dissipation effect of the electric control component 500 at the same time.

[0067] It should be understood that in other embodiments, the water pipe 400 of the electric tool 010 is disposed outside the housing 100, and the water pipe 400 is not connected to the electric control component 500, the motor 600 can dissipate heat only through the first channel 111, the second channel 112 and the assembly cavity 102, and the electric control component 500 dissipates heat only through the assembly cavity 102. Alternatively, in other embodiments, the electric tool 010 does not include the water pipe 400, the motor 600 can dissipate heat only through the first channel 111, the second channel 112 and the assembly cavity 102, and the electric control component 500 dissipates heat only through the assembly cavity 102. Alternatively, in other embodiments, the water pipe 400 disposed in the housing 100 is not connected to the electric control component 500, the motor 600 can dissipate heat only through the first channel 111, the second channel 112 and the assembly cavity 102, and the electric control component 500 dissipates heat only through the assembly cavity 102.

[0068] Optionally, the electric control component 500 further includes a housing, the electric component 510 and the heat sink 520 are assembled in the housing, and then assembled in the assembly cavity 102 as a whole; wherein the housing is provided with a first opening and a second opening, both of which are in communication with the assembly cavity 102, and the first opening is adjacent to the air inlet 105, and the second opening is adjacent to the motor 600, the heat sink 520 is assembled in the housing, and both the first section of the pipe 410 and the second section of the pipe 420 can pass through the housing to connect with the heat sink 520. In this way, it is ensured that the air entering the housing 100 from the air inlet 105 can enter the housing through the first opening, flow to the second opening, and then blow to the motor 600 from the second opening, which not only ensures reliable heat dissipation of the motor 600, but also ensures that the air entering the housing concentrates on dissipating heat to the electric component 510 and the heat sink 520, and also realizes the overall assembly of the electric control component 500, thereby improving the ease of assembly.

[0069] It should be noted that the output shaft of the motor 600 is not only connected to the grinding head 220 for driving the grinding head 220 to rotate, but also connected to the output shaft of the motor 600. A fan blade is driven to rotate while the motor 600 drives the grinding head 220 to rotate. The rotating fan blade can be used to draw air outside the shell 100 from the air inlet 105 into the shell 100 to dissipate heat for the motor 600 and the electronic control component 500.

[0070] The structure of the housing 100 can be set as required; please refer to Figure 1 and Figure 3, the housing 100 of this embodiment includes a handle 120 and a housing 130 connected to the handle 120. The grinding and cutting assembly 200 is assembled in the housing 130. Specifically, the protective cover 210 is connected to the housing 130; the handle 120 is provided with a wire routing channel 101, and the housing 130 is provided with an assembly cavity 102. To facilitate the user to hold the handle 120, usually the handle 120 is configured to have a certain thickness. Setting the wire routing channel 101 in the handle 120 can make full use of the internal space of the handle 120. On the one hand, it can improve the problem that it is difficult to realize the miniaturized design of the power tool 010 due to increasing the size of the housing 130 for setting the wire routing channel 101. On the other hand, there is no need to additionally design the structure of the housing 100, which is beneficial to reducing the design and production costs.

[0071] Optionally, the handle 120 includes a first section 121, a second section 122, a third section 123, and a fourth section 124 that are sequentially connected at an angle. The first section 121 is connected to the housing 130. The first section 121 is provided with a first wire outlet 103, and the length extension direction of the first section 121 is generally the same as the length extension direction of the housing 130; one end of the second section 122 connected to the third section 123 extends away from the housing 130, and one end of the third section 123 connected to the fourth section 124 extends towards the housing 130. One end of the fourth section 124 away from the third section 123 is connected to the housing 130, and one end of the fourth section 124 away from the third section 123 is provided with a second wire outlet 104; thus arranged, a holding space is formed between the second section 122, the third section 123, the fourth section 124, and the housing 130, so that it is convenient for the user to hold the second section 122, the third section 123, and the fourth section 124 for grinding and cutting operations; setting the first wire outlet 103 on the first section 121 and setting the second wire outlet 104 at one end of the fourth section 124 away from the third section 123 can improve the problem that the water pipe 400 passing through the housing 100 from the first wire outlet 103 and the second wire outlet 104 is easily accidentally worn by the grinding head 220.

[0072] Further, an air inlet 105 is provided at a position of the housing 130 close to the fourth section 124, and an air outlet is provided at one end of the housing 130 close to the protective cover 210.

[0073] It should be noted that the included angle between the first section 121 and the second section 122, the included angle between the second section 122 and the third section 123, and the included angle between the third section 123 and the fourth section 124 can all be selected as needed. For example: 100°, 110°, 120°, 140°, etc., and no specific limitation is made here.

[0074] It should also be noted that when the power tool 010 is in use, the user's normal gripping habit will cause the handle 120 to be distributed on the side of the housing 130 away from the grinding and cutting operation surface. And in order to improve the effect of spray dust suppression, the nozzle is assembled at the position of the protective cover 210, and when the power tool 010 is in use, it is at a position away from the grinding and cutting operation surface by relying on the protective cover 210; setting the wire routing channel 101, the first wire outlet 103, and the second wire outlet 104 on the handle 120 instead of the housing 130 can make the routing position and the wire outlet position of the water pipe 400 be distributed on the side of the grinding and cutting operation surface relative to the housing 130, and enable the water pipe 400 to be connected to the nozzle by extending a short distance from the first wire outlet 103. On the one hand, it reduces the exposed length of the water pipe 400, and on the other hand, it is beneficial to keep the part of the water pipe 400 extending out of the housing 100 away from the grinding head 220, thereby improving the problem that the exposed part of the water pipe 400 extending out of the housing 100 is accidentally worn by the grinding head 220.

[0075] Optionally, a wire winding post 125 is connected to the inner wall of the wire routing channel 101, and the wire winding post 125 can be distributed in at least one of the first section 121, the second section 122, the third section 123, and the fourth section 124. The water pipe 400 arranged in the wire routing channel 101 can abut against the outer wall of the wire winding post 125, so that the water pipe 400 is more stably arranged in the wire routing channel 101, and the problem that the water pipe 400 is accidentally dragged by an external force and loosened is improved.

[0076] It should be understood that in other embodiments, the wire routing channel 101 can also be arranged on the housing 130, and no specific limitation is made here.

[0077] Optionally, please refer to Figure 1 , the handle 120 includes a first handle 126 and a second handle 127 that are buckled and connected to each other. A wire routing channel 101 is formed between the first handle 126 and the second handle 127, and both the first handle 126 and the second handle 127 are connected to the housing 130. With such a setting, it is convenient to assemble the water pipe 400 on the handle 120.

[0078] It should be noted that, please refer to Figure 1 and Figure 3 , after the first handle 126 and the second handle 127 are buckled with each other, a structure of a first section 121, a second section 122, a third section 123, and a fourth section 124 that are sequentially connected at an angle is formed.

[0079] Optionally, please refer to Figure 1, the housing 130 includes an end housing 131 and a housing body 132. The assembly cavity 102 includes a first cavity and a second cavity. The end housing 131 is provided with the first cavity, and the motor 600 is assembled in the first cavity. The protective cover 210 is connected to the end housing 131. The housing body 132 is provided with the second cavity, and the electronic control assembly 500 is arranged in the second cavity. The end housing 131 is connected to the housing 100, and the first cavity and the second cavity can be communicated to form the assembly cavity 102.

[0080] Further, the housing body 132 includes a first housing 133 and a second housing 134 that are buckled and connected to each other, and a second cavity is formed between the first housing 133 and the second housing 134. With such a setting, the ease of operation of assembling the electronic control assembly 500 in the second cavity is ensured.

[0081] Still further, the first housing 133 is integrally formed with the first handle 126, and the second housing 134 is integrally formed with the second handle 127. With such a setting, the assembly process can be reduced and the assembly efficiency can be improved.

[0082] The connection methods of the first handle 126 and the second handle 127, and the connection methods of the first housing 133 and the second housing 134 include but are not limited to snap connection and bonding. The connection method of the end housing 131 and the housing body 132 (that is, the connection method of the end housing 131 and at least one of the first housing 133 and the second housing 134) includes but is not limited to snap connection, connection with fasteners such as bolts, and bonding.

[0083] Optionally, the first housing 133 is provided with a first channel 111, the second housing 134 is provided with a second channel 112, and both the first housing 133 and the second housing 134 are provided with air inlets 105. The heat dissipation member 520 is arranged near the first section 121 of the handle 120 and is located between the first channel 111 and the second channel 112. With such a setting, the heat can be reliably dissipated from three sides of the electrical component 510 by the air flowing through the first channel 111 and the second channel 112, and the heat dissipation member 520.

[0084] When the power tool 010 of this embodiment is in use, water can be supplied to the spray assembly 300 by the water pipe 400 to achieve the purpose of dust reduction and temperature reduction. At the same time, the coolant in the water pipe 400 can also flow through the heat dissipation member 520 to take away the heat generated by the electrical component 510. The air entering the housing 100 from the air inlet 105 can also be used to dissipate heat from the motor 600 and the electronic control assembly 500.

[0085] In summary, the power tool 010 of the present invention can reliably cool the electronic control assembly 500 and the motor 600 in the housing 100, so as to improve the problem that the electronic control assembly 500 and the motor 600 are damaged due to temperature rise, which is beneficial to extending the service life of the electronic control assembly 500 and the motor 600.

[0086] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric tool, characterized in that, Comprising: A housing (100), the housing (100) being provided with a wire routing channel (101) and an assembly cavity (102); A grinding and cutting assembly (200), the grinding and cutting assembly (200) being assembled in the housing (100); A spray assembly (300), the spray assembly (300) being assembled on the grinding and cutting assembly (200) for spraying at the grinding and cutting assembly (200); A water pipe (400), the water pipe (400) being disposed within the wire routing channel (101), and one end of the water pipe (400) being connected to the spray assembly (300), and the other end of the water pipe (400) being adapted to connect to a water source outside the housing (100); And, An electric control assembly (500), the electric control assembly being assembled in the assembly cavity (102); wherein, the water pipe (400) is connected to the electric control assembly (500) for carrying away the heat generated by the electric control assembly (500).

2. The power tool according to claim 1, wherein, The electric control assembly (500) includes electrical components (510) and a heat dissipation member (520) disposed on the side of the electrical components (510); the water pipe (400) is connected to the heat dissipation member (520) such that the liquid conveyed by the water pipe (400) can flow through the heat dissipation member (520) and then be conveyed to the spray assembly (300).

3. The power tool according to claim 2, wherein, The water pipe (400) includes a first section of pipe (410) and a second section of pipe (420), one end of the first section of pipe (410) being adapted to connect to a water source outside the housing (100), the other end of the first section of pipe (410) being connected to the heat dissipation member (520), one end of the second section of pipe (420) being connected to the heat dissipation member (520), and the other end of the second section of pipe (420) being connected to the spray assembly (300).

4. The power tool according to any one of claims 1 to 3, characterized in that The power tool further includes a motor (600), the housing (100) further being provided with an air duct (110) and an air inlet (105) communicating with the air duct (110), the motor (600) being assembled in the assembly cavity (102), and the air duct (110) being configured to convey air to the motor (600).

5. The power tool according to claim 4, characterized in that, The electric control assembly (500) is located between the motor (600) and the air inlet (105), the air duct (110) includes a first channel (111) and a second channel (112) distributed on both sides of the electric control assembly (500), both the first channel (111) and the second channel (112) communicate with the air inlet (105), and both the first channel (111) and the second channel (112) are configured to convey air to the motor (600).

6. The power tool according to claim 5, characterized in that, The assembly cavity (102) communicates with the air inlet (105) such that the air entering the assembly cavity (102) from the air inlet (105) can flow through the electric control assembly (500) and the motor (600) in sequence.

7. The power tool according to any one of claims 1 to 3, characterized in that The power tool further includes a motor (600), and the motor (600) is assembled to the housing (100); the grinding and cutting assembly (200) includes a protective cover (210) and a grinding and cutting head (220), the motor (600) is connected to the grinding and cutting head (220), the protective cover (210) is connected to the housing (100) and covers the outside of the grinding and cutting head (220). The housing (100) is further provided with a first wire outlet (103) and a second wire outlet (104), the spraying assembly (300) is assembled to the protective cover (210), one end of the water pipe (400) passes through the first wire outlet (103) and is connected to the spraying assembly (300), the other end of the water pipe (400) exposes from the second wire outlet (104), and the second wire outlet (104) is farther from the protective cover (210) than the first wire outlet (103).

8. The power tool according to claim 1, characterized in that, The housing (100) includes a handle (120) and a housing body (130) connected to the handle (120), the handle (120) is provided with the wire routing channel (101), the housing body (130) is provided with the assembly cavity (102), and the grinding and cutting assembly (200) is assembled to the housing body (130).

9. An electric tool, characterized in that, Comprising: A housing (100), the housing (100) is provided with an assembly cavity (102), an air duct (110) and an air inlet (105); An electric control component (500), the electric control component (500) is assembled in the assembly cavity (102); and, A motor (600), the motor (600) is assembled in the assembly cavity (102); wherein, The air duct (110) includes a first channel (111) and a second channel (112), both the first channel (111) and the second channel (112) communicate with the air inlet (105), the first channel (111) and the second channel (112) are distributed on both sides of the electric control component (500), and both the first channel (111) and the second channel (112) are configured to be able to convey air to the motor (600).

10. The power tool according to claim 9, characterized in that, The assembly cavity (102) communicates with the air inlet (105) so that the air entering the assembly cavity (102) from the air inlet (105) can flow through the electric control component (500) and the motor (600) in sequence.

Images