CN212331457U

CN212331457U - Electric cutting tool

Info

Publication number: CN212331457U
Application number: CN202021099056.4U
Authority: CN
Inventors: 王海滨; 张林高
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-01-12
Anticipated expiration: 2030-06-15

Abstract

The utility model provides an electric cutting tool, it includes the work subassembly and is used for control the control assembly of work subassembly, control assembly includes: the cooling structure comprises an air inlet arranged on the first shell, an air outlet arranged on the second shell and a cooling air channel connected with the air inlet and the air outlet, the driving unit comprises a fan protruding into the cooling air channel, and cooling air outside the control assembly driven by the fan flows through the power supply unit and the driving unit along the cooling air channel through the air inlet and is discharged from the air outlet. The electric cutting tool provided by the invention can effectively cool the driving unit and the power supply unit accommodated in the shell through the control assembly with the cooling structure, thereby improving the working efficiency of the electric cutting tool using the control assembly, prolonging the service life, and simultaneously ensuring compact structure, small occupied space and convenient operation.

Description

Electric cutting tool

Technical Field

The utility model relates to an electric cutting tool.

Background

A power cutting tool is a portable cutting tool that performs a cutting operation on a material such as stone, concrete, or wood using a cutting disc rotatably mounted at a support.

In fact, in order to facilitate the operation and use of the high-power handheld electric cutting tool, the high-power handheld electric cutting tool needs to have a good cooling effect while realizing the miniaturization of the volume, so as to further ensure the use effect of the high-power handheld electric cutting tool.

Although the conventional high-power handheld electric cutting tool has a corresponding cooling structure, the conventional cooling structure generally only cools a driving motor, and in the prior art, a water cooling form is adopted to spray a cutting knife blade and cool an internal motor at the same time, but a complex water cooling pipeline is required to be provided for the water cooling structure, so that the cooling pipeline cannot be accurately laid to each position of the electric cutting tool, and the cooling effect is limited; on the other hand, the laying of the cooling pipeline will lead to the volume increase of the electric cutting tool, which is not beneficial to the volume miniaturization of the electric cutting tool, and leads to the limited popularization of the electric cutting tool in the prior art. Moreover, because the power of the battery pack adopted in the high-power handheld electric cutting tool is high, the temperature of the corresponding circuit control device rises quickly, and a simple and reliable cooling structure needs to be provided to ensure the working efficiency of the whole machine.

In view of the above, there is a need for a new power cutting tool to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic cutting tool with control assembly, this electric tool can carry out effectual cooling to accommodate drive unit and the power supply unit in the casing when guaranteeing that control assembly has less volume through the control assembly who has the cooling structure who forms in the casing, guarantees to use this control assembly's electronic cutting tool's compact structure, occupation space is less, the simple operation.

In order to achieve the above object, the present invention provides an electric cutting tool, including the working assembly and being used for control the control assembly of the working assembly, the control assembly includes: the shell at least comprises a first shell, a second shell and an accommodating space, wherein the first shell and the second shell are clamped, and the accommodating space is formed by the first shell and the second shell in a surrounding mode; the driving unit is accommodated in the accommodating space and is used for driving the working assembly; the power supply unit comprises a battery cavity arranged in the accommodating space and a battery inserted in the battery cavity; be formed with in the casing and be used for the cooling drive unit with power supply unit's cooling structure, cooling structure is including setting up air intake on the first casing, setting are in air outlet on the second casing and connection the air intake with the cooling wind channel of air outlet, drive unit is including the outstanding fan that stretches into in the cooling wind channel, the fan drives the outer cooling gas of control assembly via the air intake is followed the cooling wind channel flows through power supply unit with drive unit and by the air outlet is discharged.

As a further improvement of the present invention, the cooling structure further comprises at least a wind gathering member provided on the fan, the wind gathering member has a direction toward the air outlet provided on the air outlet, the cooling gas is passed through the air inlet is followed the cooling air channel flows through the power supply unit and the driving unit enters into the wind gathering member and finally passed through the air outlet and the air outlet is discharged.

As a further improvement of the utility model, the drive unit is including connecting the driving motor of casing front end and being used for control driving motor's electronic control unit, driving motor's one end can be dismantled the connection and be in on the casing and with the work module drive is connected, and the other end is connected with the fan.

As a further improvement of the present invention, the housing includes a third housing for fixing the driving unit, the driving motor runs through the third housing, the electronic control unit is disposed inside the third housing and accommodated in the accommodating space.

As a further improvement of the present invention, the third housing is fastened to the front end of the first housing and the second housing, and made of metal material, and the inside of the third housing is provided with at least one heat dissipating rib.

As a further improvement of the present invention, the electronic control unit is provided with at least one MOS transistor, and the at least one MOS transistor is close to the driving motor, so that the fan can be used to accelerate the heat dissipation.

As a further improvement of the utility model, the air intake sets up on the lateral wall of first casing and by first casing inwards caves in and forms, the outside of air intake still is equipped with the air inlet baffle, just the air inlet baffle with be equipped with filtering component between the air intake.

As a further improvement of the present invention, the control assembly further comprises a first handle assembly formed on the first housing and/or the second housing, a second handle assembly surrounding the first housing, and a base detachably connected to the lower portion of the housing.

As a further improvement, the working assembly comprises a cutting knife unit and a transmission connection, the cutting knife unit is connected with the transmission unit of the driving unit and is used for spraying the spraying unit of the cutting knife unit.

As a further improvement of the utility model, the unit connection that sprays is connected with outside water supply unit, the unit that sprays is including the attachment in spray component, be used for control on the cutting knife unit spray the component and spray the control valve of state and be used for connecting outside water supply unit's external joint, just component, control valve and external joint pass through the tube coupling sprays.

The utility model has the advantages that: the utility model discloses a control assembly can carry out effectual cooling to the drive unit and the power supply unit of acceping in the casing when guaranteeing that control assembly has less volume through setting up the cooling structure who forms in the casing, further makes the compact structure of the electric cutting tool who uses this control assembly, occupation space is less, the simple operation, has effectively improved electric cutting tool's work efficiency, prolongs its life.

Drawings

Fig. 1 is a schematic perspective view of the control assembly of the present invention.

Fig. 2 is a broken-away schematic view of the control assembly of fig. 1.

Fig. 3 is an internal structural diagram of the control assembly of fig. 1 with the second housing, the battery, and the drive unit omitted.

Fig. 4 is a schematic view of the first housing of fig. 1 taken apart at another angle.

Fig. 5 is a schematic structural view of the third housing and the driving unit in fig. 1 when assembled.

Fig. 6 is a perspective view of the electric cutting tool of the present invention.

Fig. 7 is a disassembled schematic view of the power cutting tool of fig. 6.

Fig. 8 is a schematic view of the structure of fig. 6 when the transmission unit is connected with the driving unit.

Fig. 9 is a schematic view of the structure of the transmission unit of fig. 6.

Fig. 10 is a schematic angular exploded view of the drive unit of fig. 6.

FIG. 11 is a schematic view showing the detachment of the driving unit and the cutter unit in FIG. 6 when they are coupled

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in the drawings and described in accordance with the same are merely exemplary and the invention is not limited to these embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, a control assembly 100 for controlling a work unit 200 to complete a corresponding garden work task is provided. In the present invention, the control unit 100 includes a housing 11, a driving unit 12 and a power supply unit 13 housed in the housing 11.

Referring to fig. 1 and fig. 2, the longitudinal extending direction of the housing 11 is defined as a positive direction, and one end of the housing for connecting and fixing the working unit 200 is a front end, and one end of the housing away from the working unit 200 is a tail end, so that the housing 11 includes a first housing 111 disposed at two sides of the positive direction, a second housing 112 disposed corresponding to the first housing 111, and an accommodating space 113 defined by the first housing 111 and the second housing 112.

The first shell 111 and the second shell 112 are mutually clamped, and further, the shell 11 further includes a first handle assembly 114 disposed at the tail end thereof, in a preferred embodiment of the present invention, the first handle assembly 114 is formed by enclosing the first shell 111 and the second shell 112, that is, the first handle assembly 114 and the shell 11 are integrally formed, so that the stability of the connection between the first handle assembly 114 and the shell 11 is enhanced; on the other hand, the production steps and the flow of the housing 11 are simplified, and the purpose of reducing the production cost of the control assembly 100 is achieved. Of course, in other embodiments of the present invention, the first handle assembly 114 may also be separately formed on the first casing 111 and/or the second casing 112, or the first handle assembly 114 may also be separately disposed from the casing 11, and only the stability of the connection between the rear first handle assembly 114 and the casing 11 needs to be ensured.

Further, the housing 11 further includes a second handle unit 115 detachably connected to the housing 11 at a front end of the housing 11, and more specifically, the second handle unit 115 is provided with a grip portion 1151 formed in an arch shape and a first fixing portion 1152 and a second fixing portion 1153 respectively formed at both ends of the grip portion 1151.

The holding part 1151 extends from one end of the first fixing part 1152 to the direction far away from the second shell 12, and is arranged around the first shell 111, so that the first shell 111 is protected by the holding part 151 in a surrounding manner, the first shell 111 is effectively prevented from colliding with the outside, the strengthening structure of the first shell 111 can be simplified or the thickness of the first shell 111 can be reduced, the preparation cost of the first shell 111 is reduced, and the purpose of reducing the production cost of the control assembly 100 is further achieved.

Further, the first fixing portion 1152 is detachably connected to the bottom of the first casing 111 and/or the second casing 112, and the second fixing portion 1153 is detachably connected to the sidewall of the second casing 112, and in this embodiment, the bottom of the first casing 111 and the second casing 112 is further provided with a groove (not numbered) for holding and accommodating the first fixing portion 1152, so that when the first fixing portion 1152 is accommodated in the groove, the outer surface of the first fixing portion 1152 is level with the bottom of the casing 11 or lower than the bottom of the casing 1, so as to facilitate the stable placement of the control assembly 100 on the table.

In a preferred embodiment of the present invention, the housing 11 further has a base 116 disposed at the front end of the lower portion thereof, the base 116 is used for supporting the housing 11, so that the control assembly 100 has a high supporting strength, and in this embodiment, the first fixing portion 1152 penetrates through the base 116 to be connected with the carrying handle 11 for positioning, so as to facilitate the connection and installation of the second handle assembly 115 and the housing 11.

Referring to fig. 1 to 5, the housing 11 further forms a cooling structure 14 for cooling the driving unit 12 and the power supply unit 12. Specifically, the cooling structure 14 includes an intake port 141 provided on the first housing 111, an outlet port 142 provided on the second housing 112, and a cooling air duct 143 connecting the intake port 141 and the outlet port 142.

The utility model discloses in, air intake 141 sets up on the lateral wall of first casing 111 and by the inside sunken formation of first casing 111, and further, air intake 141 has a plurality of parallel arrangement grid trays (not shown), so sets up, can prevent effectively that control assembly 100 from in the use, has in the great debris of volume gets into accommodating space 113.

In a preferred embodiment of the present invention, the outside of the air inlet 141 is further provided with an air inlet baffle 144, and a filtering member (not shown) is further disposed between the air inlet baffle 144 and the air inlet 141, in this embodiment, the filtering member is a filtering layer for adsorbing impurities such as dust and wet gas, preferably, the filtering layer is made of a material with filtering holes, such as sponge, filtering net or gauze, so as to be disposed in the accommodating space 113 of the housing 11, so as to effectively prevent the impurities from entering the cooling air duct through the air inlet baffle 144, the filtering member and the air inlet 141 are clean, and the service life of the driving unit 12 can be effectively protected.

Further, the air inlet baffle 144 and the first shell 111 can be detachably connected, so that the air inlet baffle 144 can be detached to replace the filter element, so as to prevent impurities from blocking the filter holes of the filter element and ensure the filtering effect of the filter element.

The air outlet 142 is arranged on the side wall of the second shell 112 opposite to the first shell 111, and the size of the air inlet 141 is larger than that of the air outlet 142, so that the amount of cooling gas entering the accommodating space 113 can be effectively increased, the heat exchange efficiency of the cooling structure 14 is ensured, and further, the air outlet 142 is arranged towards the side direction of the second shell 112 to prevent the air outlet position from influencing the use of an operator.

The cooling air duct 143 is disposed around the power supply unit 13 accommodated in the accommodating space 113, and the position of the cooling air duct 143 passes through the power supply unit 13 and the driving unit 12 at the same time, so that the cooling air flowing through the cooling air duct 143 can be ensured to be fully contacted with the driving unit 12 and the power supply unit 13, and the heat exchange efficiency of the cooling structure 14 is further improved. In a preferred embodiment of the present invention, the air inlet 141 is located in the middle of the first casing 111, and the air outlet 142 is located at the front end of the second casing 112, so that the cooling air duct 143 is "L" shaped, and thus the cooling structure 14 can ensure the heat exchange efficiency and the power supply unit 13 has a smaller volume. Of course, in other embodiments of the present invention, the cooling air duct 143 may also be disposed in other shapes, and only the heat exchange cooling effect of the pillow cooling structure 14 is needed.

The cooling structure 14 further includes a wind collecting member 146 disposed in the cooling air duct 143 and corresponding to the driving unit 12, wherein the wind collecting member 146 is configured to collect the cooling air entering the cooling air duct 143 through the wind inlet 141, and make the cooling air fully contact with the driving unit 12, so as to reduce the usage temperature of the driving unit 12 and ensure the cruising ability of the control assembly 100 when driving the working unit 200.

In a preferred embodiment of the present invention, the wind gathering member 146 is detachably connected to the front end of the housing 11, and the housing 11 further has a third housing 117 for connecting and fixing the wind gathering member 146, specifically, the third housing 117 is fastened to the front ends of the first housing 141 and the second housing 142 to close the housing 11 to form the receiving space 113, and by such arrangement, dust or sewage generated during the operation of the operation unit 200 can be prevented from entering the receiving space 113 along the gap at the engaging position of the first housing 111 and the second housing 112, and then normal operation of the driving unit 12 and the power supply unit 13 is affected.

In the present embodiment, the driving unit 12 penetrates the third casing 117 to protrude into the cold air duct 143, and is connected and positioned in the third casing 117, the air collecting member 146 is covered on a portion of the driving unit 12 received in the receiving space 113, and the air collecting member 146 has an air outlet 147 for exhausting air, in the present embodiment, the air outlet 147 is disposed toward the air outlet 142, so as to guide the air collected in the air collecting member 146 along the air outlet 147 out of the air outlet 142.

The driving unit 12 includes a driving motor 121 coupled to a front end of the housing 11, an electronic control unit for controlling the driving motor 121, and a fan 123 coupled to the driving motor 121. Specifically, the electronic control unit is a PCB 122, the driving motor 121 is detachably connected to the housing 11, the driving motor 121 has a driving shaft (not numbered) for driving the working unit 200 and the fan 123 simultaneously, specifically, one end of the driving shaft is drivingly connected to the working unit 200, the other end of the driving shaft is connected to the fan 123, the fan 123 protrudes into the cooling air duct 143, further, the wind collecting member 146 covers the fan 123 and the driving motor 121, and an air inlet channel (not numbered) for inlet air is formed between the wind collecting member 146 and the third housing 117, at this time, a cooling air flow outside the control assembly 100 can flow through the power supply unit 13 along the cooling air duct 143 via the air inlet 141 under the driving of the fan 123, and further enter the wind collecting member 146 via the air inlet channel between the wind collecting member 146 and the third housing 117, so that the cooling air can sufficiently cool the driving motor 121, and finally discharged through the air outlet 147 and the air outlet 142.

PCB board 122 is fixed in the inside of casing 11, and the fixed position that sets up position process PCB board 122 of cooling duct 143 the utility model discloses in, PCB board 122 sets up the inboard at third casing 117, and the form through encapsulating or threaded connection is fixed, specifically speaking, PCB board 122 sets up around driving motor 121, so that PCB board 122 is C shape or L shape or circular or straight line class of arrangement structure and arranges, it is further, be equipped with a plurality of MOS pipes 1221 that are used for the voltage of control assembly 100 on PCB board 122, and driving motor 121 setting is pressed close to a plurality of MOS pipes 1221, so set up, when cooling gas got into through the inlet air channel between wind component 146 and the third casing 117 and gathered in wind component 146, but cabinet PCB board 122 carries out the heat reduction simultaneously.

In a preferred embodiment of the present invention, the third casing 117 is a metal casing made of metal casing material, and at this time, the PCB 122 can also dissipate heat through the third casing 117, preferably, the third casing 117 is further provided with a plurality of heat dissipation ribs 118, so as to effectively increase the heat dissipation area of the third casing 117, and further improve the heat dissipation capability of the control assembly 100.

The power supply unit 13 includes a battery chamber 131 disposed in the receiving space 113 and a battery 132 inserted into the battery chamber 131. Specifically, the battery cavity 131 is clamped between the first housing 111 and the second housing 112, the battery cavity 131 has a clamping portion 13 clamped with the first housing 111 and the second housing 112, further, a card holder (not shown) for electrically connecting the driving unit 12 and the battery 132 is disposed at the bottom of the battery cavity 131, a side wall of the battery cavity 131 is disposed toward the air inlet 141, and the cooling air duct 143 extends around the battery cavity 131 and finally communicates with the air collecting member 146 and/or the air outlet 142, so as to dissipate heat of the power supply unit 13.

It should be noted that the control assembly 100 of the present invention further has other units for operating the control assembly 100, such as the switch unit 15, etc., and the specific structure thereof is the same as or similar to that of the switch unit in the prior art, so that the detailed description is omitted herein, it should be understood that although the description of the known structure and technology is omitted in the description, it is only to avoid unnecessarily obscuring the concept of the present invention, and it should not be directly understood that the present invention is not provided with or included in the present invention.

Referring to fig. 6, a power cutting tool 300 according to the present invention is shown. The electric cutting tool 300 includes a working assembly 200 for performing a garden work task and a control assembly for controlling the operation of the working assembly 200, and it should be noted that the control assembly in this embodiment is the aforementioned control assembly 100, so the following description will only describe the working assembly 200 in detail, and repeated parts are not repeated herein.

The utility model discloses a cutting knife work assembly of work subassembly 200 for being used for carrying out the cutting task, connect cutting knife unit 21 and drive unit 12's drive unit 22 and spray unit 23 that corresponds the setting with cutting knife unit 21 including cutting knife unit 21, transmission.

Referring to fig. 6 and 7, the cutter unit 21 is used for completing a corresponding cutting task under the driving action of the driving motor 121, and in the present invention, the cutter unit 21 includes a protection cover 211 rotatably connected to an end portion of the extending direction of the transmission unit 22 and a cutting blade 211 rotatably received in the anti-slip cover 211. In a preferred embodiment of the present invention, the protective cover 211 is substantially semicircular and can rotate around the cutting blade 212, so as to prevent the operator from accidentally touching the working assembly 200 in the working state and injuring the body when using the electric cutting tool 300; on the other hand, dust or waste liquid generated by the cutting blade 212 in the rotating process can be effectively prevented from splashing, and the practicability of the electric cutting tool 300 is effectively improved.

Referring to fig. 7 to 11, the transmission unit 22 is used for driving and connecting the driving motor 121 and the cutting blade unit 21, and in the present invention, the transmission unit 22 includes a supporting arm 221 detachably connected to the third housing 117, a transmission shaft 222 accommodated in the supporting arm 221, and an output shaft 223 for connecting the cutting blade 212.

Specifically, the support arm 221 is hollow, the transmission shaft 222 is rotatably accommodated in the support arm 221 through a bearing 224, and the driving shaft of the driving motor 121 penetrates the third housing 117 and protrudes into the support arm 221 to be drivingly connected to the transmission shaft 222 accommodated in the support arm 221. The utility model discloses in, the tip of drive shaft extending direction passes through shaft coupling 224 and is connected with transmission shaft 222, and in fact, because the drive shaft easily takes place vibrations with transmission shaft 222 in the transmission connection process, the shaft coupling 225 in this embodiment is the flower type shaft coupling of adopting the polyurethane material to make.

In particular, since the ratio of the radius of the transmission shaft 222 to the radius of the cutting blade 212 directly affects the working duration of the working assembly 200 and the smoothness of the cutting efficiency during the transmission process of the transmission unit 22, in a preferred embodiment of the present invention, the length of the transmission shaft 222 is 80-200mm, and the radius of the cutting blade 212 is 100-200 mm.

Further, the contained angle of drive shaft, transmission shaft 222 and horizontal plane also will directly influence the focus balance performance of electric cutting tool 300, so the utility model discloses a preferred embodiment, the contained angle of drive shaft, transmission shaft 222 and horizontal plane is 15 ~ 45, and is preferred, and the contained angle of drive shaft, transmission shaft 222 and horizontal plane is 30 to when realizing the balance of electric cutting tool 300, improve operator's the stability of controlling.

Output pivot 223 is used for connecting drive unit 22 and cutting knife unit 21 the utility model discloses in, the one end of output pivot 223 runs through protection casing 211 in order to be connected with the cutting blade 212 of acceping in protection casing 211, and the center of cutting blade 212 is equipped with the connecting hole 213 (as figure 7) that is used for fixed connection output pivot 223, promptly the utility model discloses in, output pivot 223 runs through protection casing 211 and connecting hole 213 and cutting unit 21 and is connected the setting.

Further, the other end of the output rotating shaft 223 is connected to the other end of the transmission shaft 222 through a bevel gear 226, so that the output rotating shaft 223 and the transmission shaft 222 are arranged at an included angle to facilitate observing the cutting position of the cutting blade 212. Preferably, the output shaft 223 of the present invention is vertically arranged with the transmission shaft 222 through a bevel gear 226.

In particular, since the bevel gear 226 receives the influence of the interaction force of the cutting object rotated by the cutting blade 212 in the process of driving and connecting the transmission shaft 222 and the cutting knife unit 21, the bevel gear 226 has an acting force on the transmission shaft 222 toward the driving shaft, so as to prevent the aforementioned acting force from affecting the driving motor 121, the supporting arm 221 further has a positioning member 227 for positioning the bearing 224 therein, preferably, the positioning member 327 is disposed on the transmission shaft 322 and is a metal member bolt (not numbered) for fixing the connecting position of the bearing 324, and of course, in other embodiments of the present invention, the positioning member 327 can also be other metal members or U-shaped members for implementing clamping, and the specific structure and form of the positioning member 227 can be selected according to actual needs, which is not limited herein.

It should be noted that, since the motor power, the rotation speed of the cutting blade 212 and the reduction ratio between the driving unit 12 and the transmission unit 22 will directly affect the working time, working efficiency and energy consumption of the electric cutting tool 300, the electric cutting tool 300 can achieve high-efficiency cutting; the utility model discloses the reduction gear ratio of well bevel gear 226 is 2 ~ 6, and is preferred, and battery 132 is 1000 for voltage and supplyes 3500W at 60 ~ 82V's lithium cell package driving motor 121's power to make the cutting rotational speed of cutting blade 212 reach 3500 supplyes 6000 rpm.

The spraying unit 23 is connected to an external water supply unit (not shown) to spray the cutter unit 21 in an operating state, and prevents dust from splashing during cutting while cooling the cutter unit 21. In the present invention, the spraying unit 23 includes a spraying member 231 attached to the cutting blade unit 21, a control valve 232 for controlling the spraying state of the spraying member 231, and an external joint 233 for connecting an external water supply unit, and the spraying member 231, the control valve 232, and the external joint 233 are connected through a pipe 234.

Specifically, the spraying member 231 is provided in a "U" shape and is engaged with the edge of the protection cover 211, and further, both ends of the spraying member 231 are provided with nozzles 2311, and the nozzles 2311 are held at both sides of the cutting blade 212 by the spraying member 231 to spray both sides of the cutting blade 212 at the same time. Further, control valve 232 passes through pipeline 234 and sprays component 231 and communicate, and the utility model discloses a preferred embodiment, control valve 232 sets up the side at second casing 112, so sets up, can make things convenient for the operator to control spraying unit 23 the utility model discloses in other embodiments, control valve 232 still can set up in other positions, only needs the assurance.

External joint 233 is used for connecting outside water supply unit the utility model discloses well external joint 233 links to each other with control valve 232 through pipeline 234 equally, and external joint 233 can dismantle with pipeline 234 and be connected, promptly the utility model discloses in, external joint 233 can select according to actual need and outside water supply unit's concrete structure, does not give the restriction here.

To sum up, the utility model discloses a control assembly 100 can carry out effectual cooling to accommodating drive unit 12 and power supply unit 13 in casing 11 when guaranteeing that control assembly 100 has less volume through setting up the cooling structure 14 that is formed in casing 11, further make the compact structure of the electric cutting tool 300 who uses this control assembly 100, occupation space is less, the simple operation, the work efficiency of electric cutting tool 300 has effectively been improved, prolong its life, do benefit to electric cutting tool 300's popularization and use.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A power cutting tool comprising a working assembly and a control assembly for controlling the working assembly, the control assembly comprising:

the shell at least comprises a first shell, a second shell and an accommodating space, wherein the first shell and the second shell are clamped, and the accommodating space is formed by the first shell and the second shell in a surrounding mode;

the driving unit is accommodated in the accommodating space and is used for driving the working assembly;

the power supply unit comprises a battery cavity arranged in the accommodating space and a battery inserted in the battery cavity;

the method is characterized in that: be formed with in the casing and be used for the cooling drive unit with power supply unit's cooling structure, cooling structure is including setting up air intake on the first casing, setting are in air outlet on the second casing and connection the air intake with the cooling wind channel of air outlet, drive unit is including the outstanding fan that stretches into in the cooling wind channel, the fan drives the outer cooling gas of control assembly via the air intake is followed the cooling wind channel flows through power supply unit with drive unit and by the air outlet is discharged.

2. The power cutting tool of claim 1, wherein: the cooling structure further comprises a wind gathering component which is at least covered on the fan, the wind gathering component is provided with an air outlet facing the air outlet, cooling gas passes through the air inlet and flows through the cooling air channel, the power supply unit and the driving unit enter the wind gathering component and finally pass through the air outlet and the air outlet.

3. The power cutting tool of claim 1, wherein: the drive unit is including connecting the driving motor of casing front end and being used for control driving motor's electronic control unit, driving motor's one end can be dismantled the connection and be in on the casing and with the work component drive is connected, and the other end is connected with the fan.

4. The power cutting tool of claim 3, wherein: the shell comprises a third shell for fixing the driving unit, the driving motor penetrates through the third shell, and the electronic control unit is arranged on the inner side of the third shell and accommodated in the accommodating space.

5. The power cutting tool of claim 4, wherein: the third shell is buckled at the front ends of the first shell and the second shell and is made of metal materials, and at least one heat dissipation rib is arranged on the inner side of the third shell.

6. The power cutting tool of claim 3, wherein: the electronic control unit is arranged around the driving motor and provided with at least one MOS (metal oxide semiconductor) tube, and the at least one MOS tube is arranged close to the driving motor so as to accelerate heat dissipation under the use of the fan.

7. The power cutting tool of claim 1, wherein: the air inlet is arranged on the side wall of the first shell and formed by inward depression of the first shell, an air inlet baffle is further arranged on the outer side of the air inlet, and a filtering component is arranged between the air inlet baffle and the air inlet.

8. The power cutting tool of claim 1, wherein: the control assembly further comprises a first handle assembly formed on the first housing and/or the second housing, a second handle assembly disposed about the first housing, and a base removably attached to a lower portion of the housing.

9. The power cutting tool of claim 1, wherein: the working assembly comprises a cutting knife unit, a transmission unit in transmission connection with the cutting knife unit and the driving unit, and a spraying unit used for spraying the cutting knife unit.

10. The power cutting tool of claim 9, wherein: the spraying unit is connected with an external water supply unit, the spraying unit comprises a spraying component attached to the cutting knife unit, a control valve used for controlling the spraying state of the spraying component and an external connector used for connecting the external water supply unit, and the spraying component, the control valve and the external connector are connected through pipelines.