Electric tool

Abstract

The utility model 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 can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and cutting tools, in particular to an electric tool. Background Art

[0002] When electric grinding and cutting tools such as slotting machines and angle grinders are grinding and cutting, heat will be generated at the grinding and cutting head of the electric grinding and cutting tools, and the electric control components and motors installed in the shell of the electric grinding and cutting tools will also generate heat; the related technology sets a spray component at the grinding and cutting head to use the water mist sprayed by the spray component to reduce dust and lower the temperature at the grinding and cutting head.

[0003] However, the electric tools provided by the related art cannot reliably cool the electric control unit in the housing, and the temperature rise of the electric control unit may easily cause damage to the electric control unit and shorten its service life. Utility Model Content

[0004] The utility model aims to provide an electric tool, which can reliably cool an electric control unit in a housing, so as to improve the problem that the electric control unit is damaged due to temperature rise, and is conducive to extending the service life of the electric control unit.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides an electric tool, comprising:

[0007] A housing, wherein the housing is provided with a wiring channel and an assembly cavity;

[0008] A grinding and cutting assembly, the grinding and cutting assembly is assembled on the shell;

[0009] A spray assembly, which is assembled on the grinding and cutting assembly and is used for spraying at the grinding and cutting assembly;

[0010] A water pipe is arranged in the wiring channel, one end of the water pipe is connected to the spray assembly, and the other end of the water pipe is used to connect to a water source outside the shell, and.

[0011] The electric control component is assembled in the assembly cavity; wherein the water pipe is connected to the electric control component to take away the heat generated by the electric control component.

[0012] In an optional embodiment, the electric control assembly includes an electrical component and a heat sink disposed on the side of the electrical component; the water pipe is connected to the heat sink so that the liquid transported by the water pipe can flow through the heat sink and then be transported to the spray assembly.

[0013] In an optional embodiment, the water pipe includes a first section of the pipe and a second section of the pipe, one end of the first section of the pipe is used to connect to a water source outside the shell, the other end of the first section of the pipe is connected to the heat sink, one end of the second section of the pipe is connected to the heat sink, and the other end of the second section of the pipe is connected to the spray assembly.

[0014] In an optional embodiment, the electric tool further includes a motor, the housing is further provided with an air duct and an air inlet connected to the air duct, the motor is assembled in the assembly cavity, and the air duct is configured to deliver air to the motor.

[0015] In an optional embodiment, the electronic control component is located between the motor and the air inlet, and the air duct includes a first channel and a second channel distributed on both sides of the electronic control component, both the first channel and the second channel are connected to the air inlet, and both the first channel and the second channel are configured to deliver air to the motor.

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

[0017] In an optional embodiment, the electric tool further comprises a motor, which is mounted on the housing; the grinding assembly comprises a protective cover and a grinding head, the motor is connected to the grinding head, the protective cover is connected to the housing, and the cover is arranged outside the grinding head;

[0018] The shell is also provided with a first wire outlet, the spray assembly is assembled on the protective cover, and one end of the water pipe is connected with the spray assembly after passing through the first wire outlet.

[0019] In an optional embodiment, the shell 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 away from the protective cover than the first wire outlet.

[0020] In an optional embodiment, the shell includes a handle and a casing connected to the handle, the handle is provided with a wiring channel, the casing is provided with an assembly cavity, and the grinding and cutting assembly is assembled in the casing.

[0021] In a second aspect, the utility model further provides an electric tool, comprising:

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

[0023] An electric control component is assembled in the assembly cavity; and

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

[0025] The air duct includes a first channel and a second channel, both of which are connected to the air inlet, and the first channel and the second channel are distributed on both sides of the electronic control component, and both of which are configured to deliver air to the motor.

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

[0027] The beneficial effects of the electric tool of the embodiment of the utility model include: an electric tool provided by the embodiment of the utility model includes a shell, a grinding and cutting assembly, a spray assembly, a water pipe and an electric control assembly, the grinding and cutting assembly is assembled on the shell; the spray assembly is assembled on the grinding and cutting assembly, and is used to spray at the grinding and cutting assembly; the shell is provided with a wiring channel; the water pipe is inserted into the wiring channel, and one end of the water pipe is connected to the spray assembly, and the other end of the water pipe is used to connect to a water source outside the shell, and the electric control assembly is assembled in the assembly cavity; wherein the water pipe is connected to the electric control assembly, and is used to take away the heat generated by the electric control assembly. The water pipe can not only supply water to the spray 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) transported by the water pipe to flow through the electronic control assembly connected thereto, and take away the heat generated by the electronic control assembly, so as to achieve cooling of the electronic control assembly, improve the problem of damage to the electronic control assembly due to temperature rise, and help to extend the service life of the electronic control assembly; moreover, arranging the water pipe for supplying water to the spray assembly inside the shell can improve the problem of the water pipe being easily hooked due to being placed outside, and improve the problem of the operation of the power tool being affected by the water pipe being hooked.

[0028] Another electric tool provided by the embodiment of the utility model includes a housing, an electric control component and a motor, wherein the housing is provided with an assembly cavity, an air duct and an air inlet; the electric control component and the motor are both assembled in the assembly cavity; the air duct includes a first channel and a second channel, both of which are connected to the air inlet, and the first channel and the second channel are distributed on both sides of the electric control component and are configured to deliver air to the motor. The first channel and the second channel are provided on both sides of the electric control component to directly guide the air to the motor, ensuring that the wind delivered by the first channel and the second channel will not flow through the electric control component, thereby avoiding the wind delivered by the first channel and the second channel taking away the heat of the electric control component and flowing to the motor after heating, thereby ensuring the reliability of the motor cooling, improving the problem of the motor being damaged due to temperature rise, and being conducive 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 utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the electric tool in the embodiment of the utility model at a first viewing angle;

[0031] Figure 2 It is a schematic diagram of the structure of the electric tool in the embodiment of the utility model at a second viewing angle;

[0032] Figure 3 It is a partial structural schematic diagram of the electric tool in the embodiment of the utility model;

[0033] Figure 4 It is a partial structural sectional view of the electric tool in the embodiment of the utility model.

[0034] Icon: 010-power tool; 100-housing; 101-wiring channel; 102-assembly cavity; 103-first outlet; 104-second 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-winding column; 126-first handle; 127-second handle; 130-housing; 13 1-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 pipeline; 411-first sub-pipeline; 412-second sub-pipeline; 413-tee connector; 420-second section of pipeline; 430-third section of pipeline; 500-electrical control assembly; 510-electrical component; 520-heat sink; 600-motor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model 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 a limitation on the present utility model. 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 "setting" and "connection" 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 components. 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 3The electric tool 010 of this embodiment further includes an electric control assembly 500 and a motor 600. The housing 100 is further provided with an assembly cavity 102. The electric control assembly 500 and the motor 600 are both assembled in the assembly cavity 102. The electric control assembly 500 is electrically connected to the motor 600. The motor 600 is transmission-connected to the grinding assembly 200 to drive the grinding assembly 200 to operate. By assembling the electric control assembly 500 and the motor 600 in the assembly cavity 102, the housing 100 can be used to protect the electric control assembly 500 and the motor 600, thereby improving the problem that the electric control assembly 500 and the motor 600 are easily damaged by collision.

[0044] It should be understood that in other embodiments, only the electric control assembly 500 may be assembled in the assembly cavity 102 , and the motor 600 is transmission-connected to the grinding assembly 200 and assembled outside the housing 100 .

[0045] Optionally, the water pipe 400 is connected to the electric control component 500 to remove the heat generated by the electric 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 allow the water (or coolant) transported by the water pipe 400 to flow through the electric control component 500 connected thereto to remove the heat generated by the electric control component 500 to achieve temperature reduction of the electric control component 500, improve the problem of damage to the electric control component 500 due to temperature rise, and help to extend the service life of the electric control component 500.

[0046] Furthermore, the electric control component 500 includes an electrical component 510 and a heat sink 520 disposed on the side of the electrical component 510; disposing the heat sink 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 electric control assembly 500 may include only the electric component 510 without the heat sink 520 .

[0048] Furthermore, the heat sink 520 is a water-cooled heat sink, and the water pipe 400 is connected to the heat sink 520, so that the liquid transported by the water pipe 400 can flow through the heat sink 520 and then be transported to the spray assembly 300. In this way, when the liquid transported in the water pipe 400 flows through the heat sink 520, it can take away the heat of the heat sink 520 and part of the electrical components 510, further improving the heat dissipation and cooling effect of the electrical components 510, which is conducive to extending the service life of the electrical components 510.

[0049] It should be noted that the above-mentioned electrical components 510 include circuit boards and capacitors, etc., which are similar to the electrical components 510 in the electric tool 010 provided in the related art, and will not be described in detail here.

[0050] It should be understood that in other embodiments, the electronic control component 500 may include only the electrical component 510 without the heat sink 520, and the water pipe 400 may be directly connected to the outside of the electrical component 510 by means of connectors 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 channel is provided inside the heat dissipation element 520, and the water pipe 400 is connected to the heat dissipation channel, so that the coolant transported in the water pipe 400 can enter the heat dissipation channel and then be output from the heat dissipation channel.

[0052] Furthermore, 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 the 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 transported by the first section of pipe 410 enters the heat sink 520, it is output from the second section of pipe 420 and transported to the spray assembly 300 through the second section of pipe 420, which can ensure that the coolant reliably flows through the heat sink 520, takes away part of the heat from the heat sink 520 and the electrical components, and improves the heat dissipation effect of the electrical components.

[0053] Furthermore, the heat sink 520 is provided with an inlet and an outlet, both of which are connected to the heat dissipation channel, and the inlet and the outlet are distributed at both ends of the heat sink 520 along the length extension direction of the heat sink 520, the first section of the pipe 410 is connected to the inlet, and the second section of the pipe 420 is connected to the outlet. In this way, the coolant in the first section of the pipe 410 can enter the heat dissipation channel from the inlet, flow along the length extension direction of the heat sink 520, and then flow into the second section of the pipe 420 from the outlet, so as to better and more reliably take away the heat of the heat sink 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, depending on the specific power tool 010 , the corresponding grinding head 220 is also different. For example, when the power tool 010 is an angle grinder, the grinding head 220 is an angle grinder head.

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

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

[0061] Of course, in other embodiments, only one first wire outlet 103 may be provided, so that all pipelines connected to each nozzle pass through the housing 100 from the same first wire outlet 103 .

[0062] Further, please refer to Figure 3 The housing 100 is also provided with a second outlet 104, and the other end of the water pipe 400 is exposed from the second outlet 104, and the second outlet 104 is farther away from the protective cover 210 than the first outlet 103. In this way, the end of the water pipe 400 used for connecting to the water source outside the housing 100 can extend out of the housing 100 from the end away from the protective cover 210 and the grinding head 220, thereby improving the problem of the exposed part of the water pipe 400 being accidentally worn by the grinding 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 3The 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 on the housing 130. Specifically, the protective cover 210 is connected to the housing 130. The handle 120 is provided with a wiring channel 101, and the housing 130 is provided with an assembly cavity 102. In order to facilitate the user to hold the handle 120, the handle 120 is usually configured to have a certain thickness. The wiring channel 101 is provided in the handle 120 to fully utilize the internal space of the handle 120. On the one hand, it improves the problem that the size of the housing 130 is increased in order to set the wiring channel 101, which makes it difficult to achieve a miniaturized design of the electric tool 010. On the other hand, it does not require additional design of the structure of the housing 100, which is conducive 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 which are connected in sequence 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 substantially consistent with the length extension direction of the housing 130; the end of the second section 122 connected to the third section 123 extends in a direction away from the housing 130, the end of the third section 123 connected to the fourth section 124 extends in a direction close to the housing 130, the end of the fourth section 124 away from the third section 123 is connected to the housing 130, and the fourth section 124 is connected to the housing 130. A second wire outlet 104 is provided at one end of 124 away from the third section 123; in this way, a holding space is enclosed between the second section 122, the third section 123, the fourth section 124 and the housing 130, so that the user can hold the second section 122, the third section 123 and the fourth section 124 for grinding and cutting operations; the first wire outlet 103 is provided on the first section 121, and the second wire outlet 104 is provided at one end of the fourth section 124 away from the third section 123, which 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 and cutting head 220.

[0072] Furthermore, 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 angle between the first section 121 and the second section 122, the angle between the second section 122 and the third section 123, and the 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 are not specifically limited here.

[0074] It should also be noted that when the power tool 010 is in use, the user's usual holding habit will cause the handle 120 to be distributed on the side of the housing 130 away from the grinding and cutting working surface, and in order to improve the dust reduction effect of the spray, the nozzle is installed at the position of the protective cover 210, and when the power tool 010 is in use, it is located close to the protective cover 210 and away from the grinding and cutting working surface; the wiring channel 101, the first wire outlet 103 and the second wire outlet 104 are all arranged on the handle 120 instead of the housing 130, so that the wiring position and the wire outlet position of the water pipe 400 can be distributed on one side of the grinding and cutting working surface relative to the housing 130, and the water pipe 400 can be extended from the first wire outlet 103 to connect with the nozzle at a shorter distance, which on the one hand reduces the exposed length of the water pipe 400, and on the other hand helps to keep the part of the water pipe 400 extending out of the housing 100 away from the grinding and cutting head 220, thereby improving the problem of the exposed part of the water pipe 400 extending out of the housing 100 being accidentally worn by the grinding and cutting head 220.

[0075] Optionally, the inner wall of the wiring channel 101 is connected to a winding post 125, and the 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 wiring channel 101 can be abutted against the outer wall of the winding post 125, so that the water pipe 400 is more stably arranged in the wiring channel 101, thereby improving the problem of the water pipe 400 being loosened due to accidental dragging by external force.

[0076] It should be understood that in other embodiments, the wiring channel 101 may also be disposed in the housing 130 , which is not specifically limited herein.

[0077] Optionally, see Figure 1 The handle 120 includes a first handle 126 and a second handle 127 that are engaged and connected to each other, a wiring channel 101 is formed between the first handle 126 and the second handle 127, and the first handle 126 and the second handle 127 are both connected to the housing 130. This arrangement facilitates the assembly of the water pipe 400 on the handle 120.

[0078] Please note that, please refer to Figure 1 and Figure 3 The first handle 126 and the second handle 127 are buckled together to form a first section 121, a second section 122, a third section 123 and a fourth section 124 structure which are connected in sequence at an angle.

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

[0080] Furthermore, the shell body 132 includes a first shell 133 and a second shell 134 that are interlocked and connected to each other, and a second cavity is formed between the first shell 133 and the second shell 134; such a configuration ensures that the electric control component 500 is easy to assemble in the second cavity.

[0081] Furthermore, the first shell 133 and the first handle 126 are integrally formed, and the second shell 134 and the second handle 127 are integrally formed; such a configuration can reduce assembly steps and improve assembly efficiency.

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

[0083] Optionally, the first shell 133 is provided with a first channel 111, the second shell 134 is provided with a second channel 112, and both the first shell 133 and the second shell 134 are provided with an air inlet 105; the heat sink 520 is provided 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 configuration, the wind flowing through the first channel 111 and the second channel 112 and the heat sink 520 can be used to reliably dissipate heat from three sides of the electrical component 510.

[0084] When the electric tool 010 of this embodiment is in use, the water pipe 400 can be used to supply water to the spray assembly 300 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 sink 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 the heat of the motor 600 and the electronic control component 500.

[0085] In summary, the electric tool 010 of the present invention can reliably cool the electric control component 500 and the motor 600 in the housing 100 to improve the problem of the electric control component 500 and the motor 600 being damaged due to temperature rise, which is beneficial to extending the service life of the electric control component 500 and the motor 600.

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

Claims

1. An electric tool, characterized in that: include: A housing (100), wherein the housing (100) is provided with a wiring channel (101) and an assembly cavity (102); A grinding and cutting assembly (200), wherein the grinding and cutting assembly (200) is assembled on the housing (100); A spray assembly (300), the spray assembly (300) being assembled on the grinding and cutting assembly (200) and being used for spraying at the grinding and cutting assembly (200); a water pipe (400), wherein the water pipe (400) is inserted into the wiring channel (101), 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); as well as, An electric control component (500) is assembled in the assembly cavity (102); wherein the water pipe (400) is connected to the electric control component (500) and is used to take away heat generated by the electric control component (500).

2. The electric tool according to claim 1, characterized in that: The electric control component (500) comprises an electrical component (510) and a heat sink (520) arranged on the side of the electrical component (510); the water pipe (400) is connected to the heat sink (520) so that the liquid transported by the water pipe (400) can flow through the heat sink (520) and then be transported to the spray component (300).

3. The electric tool according to claim 2, characterized in that: The water pipe (400) comprises 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), the other end of the first section of pipe (410) is connected to the heat sink (520), one end of the second section of pipe (420) is connected to the heat sink (520), and the other end of the second section of pipe (420) is connected to the spray assembly (300).

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

5. The electric tool according to claim 4, characterized in that: The electric 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 electric 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 transport air to the motor (600).

6. The electric tool according to claim 5, characterized in that: The assembly cavity (102) is in communication with the air inlet (105), so that 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.

7. The electric tool according to any one of claims 1 to 3, characterized in that: The electric tool further comprises a motor (600), wherein the motor (600) is mounted on the housing (100); the grinding assembly (200) comprises a protective cover (210) and a grinding head (220), wherein the motor (600) is connected to the grinding head (220), and the protective cover (210) is connected to the housing (100) and is disposed outside the grinding head (220); The housing (100) is further provided with a first wire outlet (103) and a second wire outlet (104); the spray assembly (300) is assembled on 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); the other end of the water pipe (400) is exposed from the second wire outlet (104); and the second wire outlet (104) is farther away from the protective cover (210) than the first wire outlet (103).

8. The electric tool according to claim 1, characterized in that: The housing (100) comprises a handle (120) and a casing (130) connected to the handle (120); the handle (120) is provided with the wiring channel (101); the casing (130) is provided with the assembly cavity (102); and the grinding and cutting assembly (200) is assembled in the casing (130).

9. An electric tool, characterized in that: include: A housing (100), wherein 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) being assembled in the assembly cavity (102); and A motor (600), wherein the motor (600) is assembled in the assembly cavity (102); wherein: The air duct (110) comprises a first channel (111) and a second channel (112), the first channel (111) and the second channel (112) are both connected to the air inlet (105), the first channel (111) and the second channel (112) are distributed on both sides of the electronic control component (500), and the first channel (111) and the second channel (112) are both configured to transport air to the motor (600).

10. The electric tool according to claim 9, characterized in that: The assembly cavity (102) is in communication with the air inlet (105), so that 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.

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