CN216399527U - Electric tool heat abstractor - Google Patents
Electric tool heat abstractor Download PDFInfo
- Publication number
- CN216399527U CN216399527U CN202122924946.5U CN202122924946U CN216399527U CN 216399527 U CN216399527 U CN 216399527U CN 202122924946 U CN202122924946 U CN 202122924946U CN 216399527 U CN216399527 U CN 216399527U
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- stator
- side air
- rotor
- air
- air inlet
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 16
- 238000009423 ventilation Methods 0.000 claims description 10
- 239000000428 dust Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model relates to a heat dissipation device for an electric tool, which comprises fan blades, a motor and a casing, wherein the fan blades are fixed on a rotor of the motor; a plurality of side air inlet holes and side air outlet holes are symmetrically formed in two sides of the shell, a plurality of stator supports are arranged in the shell, the side air inlet holes are formed in one side of a handle of the shell, a rotor support is further arranged in the shell, the rotor support is located at the tail of the shell, and the side air outlet holes are formed between the rotor support and the stator supports; the stator is fixed on the stator bracket, the rotor is rotatably arranged on the rotor bracket, the controller is arranged in the shell and is positioned below the side air inlet hole, the side air inlet hole is arranged opposite to one end of the stator and one end of the stator, and the fan blade is arranged opposite to the side air outlet hole; the fan blades suck air from the side air inlet holes, and the air passes through the stator, the rotor and the controller and then is discharged from the side air outlet holes. The device is used for feeding air from two sides of the machine shell, exhausting air from two sides of the machine shell after the controller and the motor are cooled, and dust is not easy to enter from the side air inlet hole far away from the chuck.
Description
Technical Field
The utility model relates to an electric tool, in particular to a heat dissipation device of the electric tool.
Background
The existing electric tool mostly adopts air inlet from the front part of the casing and air outlet from two sides of the tail part of the casing, and the fan blades are arranged at the tail part of the motor. Although the air passes through the motor in the heat dissipation mode, the air inlet hole is close to the chuck, so that dust and the like generated by the work of the electric tool easily enter the motor, the motor is prone to generating problems, and the dust is easily adsorbed when the heat dissipation mode is particularly used for drilling. And the existing heat dissipation mode can only dissipate heat to the motor, can not dissipate heat to the controller, the controller is easy to damage after long-time high-temperature work, and the service life of the electric tool is shortened.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the utility model provides a heat dissipation device for an electric tool, which can effectively dissipate heat of a motor and a controller, is far away from a chuck, prevents dust and the like from entering the motor, and effectively ensures the service life of the electric tool, and the specific technical scheme is as follows:
a heat dissipation device for an electric tool comprises fan blades and a motor, wherein the fan blades are fixed on a rotor of the motor; further comprising: the air conditioner comprises a shell, a plurality of side air inlet holes and side air outlet holes are symmetrically formed in two sides of the shell, a plurality of stator supports are arranged inside the shell, the side air inlet holes are formed in one side of a handle of the shell, a rotor support is further arranged inside the shell, the rotor support is located at the tail of the shell, and the side air outlet holes are formed between the rotor support and the stator supports; the stator of the motor is fixed on the stator support, the rotor is rotatably installed on the rotor support, the controller is installed inside the casing and located below the side air inlet hole, the side air inlet hole is opposite to one end of the stator and one end of the stator, and the fan blade is opposite to the side air outlet hole; the fan blades suck air from the side air inlet holes, and the air passes through the stator, the rotor and the controller and then is discharged from the side air outlet holes.
Preferably, the method further comprises the following steps: and the upper air outlet is positioned above the side air outlet and positioned at the top of the shell.
Preferably, the method further comprises the following steps: the lower air outlet is located below the side air outlet and located on one side of the side air inlet, and the lower air outlet is opposite to the other end of the stator.
Preferably, the air conditioner further comprises a rear cover, a plurality of vent holes are formed in the rear cover, the rear cover is installed at the tail of the casing and located on one side of the rotor support, air duct holes are formed in the rotor support, an air deflector is arranged inside the casing and provided with an air outlet groove, the air deflector is located below the side air inlet hole and located above the controller and the air duct holes, the fan blades suck air from the vent holes, and the air passes through the air duct holes and the controller and passes through the air outlet groove and the stator to be discharged from the side air outlet holes.
Furthermore, a plurality of ventilation grooves are formed in the rear cover, and the ventilation holes are formed in the bottoms of the ventilation grooves.
Compared with the prior art, the utility model has the following beneficial effects:
the heat dissipation device for the electric tool provided by the utility model realizes the heat dissipation of the motor and the controller by air intake from two sides of the shell and then air exhaust from two sides of the shell through the controller and the motor, and the air intake is far away from the chuck, so that dust can be effectively prevented from entering the interior of the motor.
Drawings
FIG. 1 is a front view of a heat sink for a power tool;
FIG. 2 is a schematic view of a heat sink assembly for an electric tool, with a portion of the housing hidden;
FIG. 3 is an enlarged view of a portion of a heat sink for a power tool;
FIG. 4 is a schematic view of the structure of the housing;
FIG. 5 is an enlarged view of a portion of FIG. 4 at I;
FIG. 6 is a front view of the rear cover;
fig. 7 is a rear view structural diagram of the rear cover.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 5, a heat dissipation device for an electric tool includes a fan blade 33, a motor and a casing 1, wherein the fan blade 33 is fixed on a rotor 32 of the motor; the casing 1 is composed of two half shells, and a plurality of side air inlet holes 11 and side air outlet holes 12 are symmetrically arranged on two sides of the casing 1; the side air inlet hole 11 is positioned above the handle of the machine shell 1 and is arranged along the axial direction; a plurality of stator supports 18 are arranged inside the machine shell 1, and the stator supports 18 are matched with the outer circular surface of the stator 31 and used for fixing the stator 31; a rotor bracket 19 is further arranged inside the casing 1, the rotor bracket 19 is positioned at the tail part of the casing 1, the side air outlet 12 is positioned between the rotor bracket 19 and the stator bracket 18, and the side air outlet 12 is arranged along the radial direction; a stator 31 of the motor is fixed on a stator support 18, a rotor 32 is arranged on a rotor support 19 through a bearing, a controller 4 is arranged in the casing 1 and is positioned below a side air inlet hole 11, an air channel is formed between the controller 4 and the stator 31, the side air inlet hole 11 is arranged opposite to one end of the stator 31 and one end of the stator 31, and a fan blade 33 is arranged opposite to a side air outlet hole 12; the fan blade 33 sucks air from the side air inlet 11, and the air passes through the stator 31, the rotor 32 and the controller 4 and then is discharged from the side air outlet 12.
In order to improve the air outlet efficiency, an upper air outlet hole 13 and a lower air outlet hole 14 are respectively arranged above and below the side air outlet hole 12, wherein the upper air outlet hole 13 is close to the top of the casing 1 and is used for circulating air above the stator 31; the lower air outlet 14 is located at one side of the side air inlet 11 and is opposite to the other end of the stator 31, and is used for rapidly discharging air in the air duct and dissipating heat below the stator 31. The side air outlet 12, the upper air outlet 13 and the lower air outlet 14 form air outlets arranged along the end face of the motor, so that the inside of the motor can be uniformly cooled, and dead angles of heat dissipation can be avoided.
The fan blade 33 is located at the tail of the casing 1, the side air inlet 11 is located above the handle and far away from the chuck, dust is not easy to suck, the side air inlet 11 is used for introducing air, because the side air inlet 11 is arranged along the axis of the stator 31, and part of the side air inlet 11 is located at the end of the stator 31, part of the air enters the stator 31 from the end of the stator 31, is sucked out from the other end of the stator 31 after heat dissipation of the stator 31 and the rotor 32, and is then discharged from the side air outlet 12 through the fan blade 33; partial air enters the air duct between the stator 31 and the controller 4 from the side air inlet 11, the stator 31 is cooled outside and the controller 4, then the air is discharged from the side air outlet 12, the stator 31, the rotor 32 and the controller 4 are cooled, the cooling effect is good, dust is not easy to enter, and the service life of the electric tool is prolonged.
Example two
On the basis of above-mentioned embodiment one, as shown in fig. 1 to 7, in order to improve the radiating effect, increase the air inlet area, strengthen the heat dissipation to controller 4 simultaneously, still include back lid 2, back lid 2 is installed at the afterbody of casing 1, and is located one side of rotor bracket 19, be equipped with wind channel hole 15 on the rotor bracket 19, be equipped with a plurality of ventilation slots 22 and ventilation hole 21 on the back lid 2, ventilation hole 21 sets up the bottom at ventilation slot 22, form the dark window, can prevent that the foreign matter from getting into, protect inner structure, do not influence the air inlet simultaneously. An air deflector 16 is arranged inside the casing 1, an air outlet groove 17 is arranged on the air deflector 16, the air deflector 16 is positioned below the side air inlet hole 11 and above the controller 4 and the air duct hole 15, and an air duct is formed between the air deflector 16 and the controller 4 and used for forcibly dissipating heat of the controller 4 and improving the heat dissipation effect of the controller 4.
During heat dissipation, the fan blade 33 sucks air from the vent hole 21, the air passes through the air passage hole 15 and the air passage between the controller 4 and the air deflector 16 to dissipate heat of the controller 4, and then the air is discharged from the air outlet slot 17 through the stator 31 from the side air outlet hole 12 and the lower air outlet hole 14.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.
Claims (5)
1. A heat dissipation device for an electric tool comprises a fan blade (33) and a motor, wherein the fan blade (33) is fixed on a rotor (32) of the motor; it is characterized by also comprising:
the air conditioner comprises a machine shell (1), wherein a plurality of side air inlet holes (11) and side air outlet holes (12) are symmetrically formed in two sides of the machine shell (1), a plurality of stator supports (18) are arranged inside the machine shell (1), the side air inlet holes (11) are located on one side of a handle of the machine shell (1), a rotor support (19) is further arranged inside the machine shell (1), the rotor support (19) is located at the tail part of the machine shell (1), and the side air outlet holes (12) are located between the rotor support (19) and the stator supports (18);
a stator (31) of the motor is fixed on the stator support (18), a rotor (32) is rotatably installed on the rotor support (19), a controller (4) is installed inside the casing (1) and located below the side air inlet holes (11), the side air inlet holes (11) are arranged opposite to one ends of the stator (31) and the stator (31), and the fan blades (33) are arranged opposite to the side air outlet holes (12);
the fan blades (33) suck air from the side air inlet holes (11), and the air passes through the stator (31), the rotor (32) and the controller (4) and then is discharged from the side air outlet holes (12).
2. The power tool heat sink of claim 1, further comprising: go up exhaust vent (13), go up exhaust vent (13) and be located the top of side exhaust vent (12), and be located the top of casing (1).
3. The power tool heat sink of claim 1, further comprising: lower exhaust vent (14), exhaust vent (14) are located down the below of side exhaust vent (12), and are located one side of side fresh air inlet (11), lower exhaust vent (14) still with the other end of stator (31) sets up relatively.
4. The heat sink for electric power tools according to any one of claims 1 to 3, further comprising a rear cover (2), the rear cover (2) is provided with a plurality of vent holes (21), the rear cover (2) is arranged at the tail part of the machine shell (1), and is positioned at one side of the rotor bracket (19), the rotor bracket (19) is provided with an air duct hole (15), an air deflector (16) is arranged in the casing (1), an air outlet groove (17) is arranged on the air deflector (16), the air deflector (16) is positioned below the side air inlet hole (11), and the fan blade (33) sucks air from the air vent (21), the air passes through the air duct hole (15) and the controller (4), the air outlet groove (17) passes through the stator (31) and the side air outlet (12) is discharged.
5. The heat sink for electric tools according to claim 4, wherein the rear cover (2) is provided with a plurality of ventilation slots (22), and the ventilation holes (21) are formed at the bottoms of the ventilation slots (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122924946.5U CN216399527U (en) | 2021-11-25 | 2021-11-25 | Electric tool heat abstractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122924946.5U CN216399527U (en) | 2021-11-25 | 2021-11-25 | Electric tool heat abstractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216399527U true CN216399527U (en) | 2022-04-29 |
Family
ID=81302207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122924946.5U Active CN216399527U (en) | 2021-11-25 | 2021-11-25 | Electric tool heat abstractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216399527U (en) |
-
2021
- 2021-11-25 CN CN202122924946.5U patent/CN216399527U/en active Active
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