CN220007705U - Heat radiation structure of electric tool - Google Patents
Heat radiation structure of electric tool Download PDFInfo
- Publication number
- CN220007705U CN220007705U CN202321529141.3U CN202321529141U CN220007705U CN 220007705 U CN220007705 U CN 220007705U CN 202321529141 U CN202321529141 U CN 202321529141U CN 220007705 U CN220007705 U CN 220007705U
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- back cover
- stator
- rotor
- main part
- casing
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- 230000005855 radiation Effects 0.000 title description 2
- 239000004065 semiconductor Substances 0.000 claims abstract description 18
- 230000017525 heat dissipation Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005676 thermoelectric effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to the technical field of electric tools, in particular to a heat dissipation structure of an electric tool, which comprises the following components: the main part and set up in the gear box of main part front end, the main part includes casing and back cover, the back cover is inside to be located to the casing rear end and with the back cover intercommunication setting, be equipped with stator-rotor subassembly in the casing, stator-rotor subassembly front end is established and is connected the gear box, the back cover both sides are provided with the air inlet grid, the inside right side wall of back cover is tightly pasted and is had the semiconductor refrigeration piece, the inside wind-proof circle that is equipped with of casing, the wind-proof circle is located stator-rotor subassembly left side, the outside right side of back cover is equipped with the fan, the fan is connected with the fin, the fin left end sets up inside the right side wall of back cover, the opening of intercommunication inside has been seted up to the main part front side, cools down through the semiconductor refrigeration piece to the inside stator-rotor subassembly and other components cooling, improves the cooling efficiency to inside temperature.
Description
Technical Field
The utility model relates to the technical field of electric tools, in particular to a heat dissipation structure of an electric tool.
Background
The operation of the motor of the electric tool in the working process can generate a large amount of heat, if the temperature is not reduced in time, the service life of the motor can be reduced when the electric tool is operated continuously in a long-term high-temperature environment, and the motor can be burnt when the electric tool is operated in an excessively high-temperature environment. The existing heat dissipation mode of the electric tool is to dissipate heat through a fan, however, the heat dissipation mode has long time response and slow heat dissipation.
Therefore, in order to solve the defects in the prior art, a heat dissipation structure of the electric tool with a simple structure needs to be designed.
Disclosure of Invention
The utility model provides a heat dissipation structure of an electric tool for solving the problems in the prior art.
The aim of the utility model can be achieved by the following technical scheme: a heat dissipation structure of an electric tool includes: the main part and set up in the gear box of main part front end, the main part includes casing and back cover, the back cover is inside to be located to the casing rear end and with the back cover intercommunication setting, be equipped with stator-rotor subassembly in the casing, stator-rotor subassembly front end is established and is connected the gear box, the back cover both sides are provided with the air inlet grille, the inside right side wall of back cover has tightly pasted the semiconductor refrigeration piece, the inside wind-proof circle that is equipped with of casing, the wind-proof circle is located stator-rotor subassembly left side, the outside right side of back cover is equipped with the fan, the fan is connected with the fin, the fin left end sets up inside the right side wall of back cover, the inside opening of intercommunication has been seted up to the main part front side.
Further improvement, the right side wall of the rear cover is provided with a plurality of cold air holes, and the cold air holes are positioned on the left side of the semiconductor refrigerating sheet.
Further improvement, the rotor front end of stator-rotor subassembly is equipped with the rotor bearing, the rotor front end is equipped with the pinion, the pinion is located the left side of rotor bearing, the pinion is connected with the inside gear wheel meshing of gear box.
Further improvement, the casing is connected with the rear cover through a clamping connection.
Further improvement, the radiating fins are symmetrically arranged with two groups.
Compared with the prior art, the heat dissipation structure of the electric tool has the beneficial effects that:
the stator and rotor assembly in the electric tool rotates, the thermoelectric effect of the semiconductor refrigerating sheet is utilized to prepare cold energy, the cold conducting end face of the semiconductor refrigerating sheet is clung to the outer wall of the rear cover, cold air generated by the cold conducting end face is cooled down further firstly from air sucked in the air inlet grille, then moves leftwards along the inner side wall of the rear cover, sucked air moves to the outside of the stator and rotor assembly with the cold air, moves upwards after touching the wind-proof ring, a part of air flow enters the gear box and enters a gap between the stator and the rotor to take away heat, and finally is blown out from the opening.
The semiconductor refrigerating sheet cools down the sucked air, then cools down the inner stator and rotor assembly and other elements, improves the cooling efficiency of the inner temperature, and the heat generated by the semiconductor refrigerating sheet is discharged through the radiating sheet and the fan, thereby ensuring the refrigerating effect of the semiconductor refrigerating sheet.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model
FIG. 2 is a schematic view of a partial enlarged view of the first embodiment of the present utility model
FIG. 3 is a schematic view of a partial enlarged view of a second embodiment of the present utility model
In the figure, 1-main body, 11-casing, 12-back cover, 121-cooling hole, 13-air inlet grille, 14-stator and rotor assembly, 15-wind-proof ring, 16-opening, 2-gear box, 3-semiconductor refrigerating sheet, 4-fan, 5-radiating sheet, 61-rotor bearing, 62-pinion and 63-large gear.
Detailed Description
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The technical scheme of the utility model is further described below with reference to the examples and the accompanying figures 1-3.
Example 1
A power tool heat dissipation structure, comprising: the main part 1 and set up in the gear box 2 of main part 1 front end, main part 1 includes casing 11 and back shroud 12, the inside and the back shroud 12 intercommunication setting of back shroud 12 are located to the casing 11 rear end, be equipped with stator-rotor subassembly 14 in the casing 11, stator-rotor subassembly 14 front end is established and is connected gear box 2, back shroud 12 both sides are provided with air inlet grille 13, the inside right side wall of back shroud 12 is closely equipped with semiconductor refrigeration piece 3, the inside anti-wind circle 15 that is equipped with of casing 11, anti-wind circle 15 is located stator-rotor subassembly 14 left side, the outside right side of back shroud 12 is equipped with fan 4, fan 4 is connected with fin 5, fin 5 left end sets up in the inside right side wall of back shroud 12, the inside opening 16 of intercommunication has been seted up to main part 1 front side.
As shown in fig. 1 to 3, the use principle of the present utility model is as follows: the stator and rotor assembly 14 in the electric tool rotates, the thermoelectric effect of the semiconductor refrigerating sheet 3 is utilized to prepare cold energy, the cold-conducting end face of the semiconductor refrigerating sheet 3 is clung to the outer wall of the rear cover 12, cold air generated by the cold-conducting end face is further cooled firstly, then moves leftwards along the inner side wall of the rear cover 12, the sucked air moves to the outside of the stator and rotor assembly 14 with the cold air, and then contacts the wind-proof ring 15 to move upwards, a part of air flow enters the gear box 2 and enters a gap between the stator and the rotor to take away heat, finally the air is blown out from the opening 16, the cooling efficiency of the internal temperature is improved, and the heat generated by the semiconductor refrigerating sheet 3 is discharged through the cooling fin 5 and the fan 4, so that the refrigerating effect of the semiconductor refrigerating sheet is ensured.
As a further preferred embodiment, the right side wall of the rear cover 12 is provided with a plurality of cooling holes 121, and the cooling holes 121 are located at the left side of the semiconductor cooling fin 3.
As a further preferred embodiment, the rotor front end of the stator-rotor assembly 14 is provided with a rotor bearing 61, the rotor front end is provided with a pinion gear 62, the pinion gear 62 is positioned at the left side of the rotor bearing 61, and the pinion gear 62 is in meshed connection with a large gear 63 inside the gear case 2.
As a further preferred embodiment, the housing 11 and the rear cover 12 are connected by a snap-fit connection.
As a further preferred embodiment, two groups of heat dissipation fins 5 are symmetrically arranged, so as to improve the heat dissipation effect.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (5)
1. A heat dissipation structure for an electric tool, comprising: the main part and set up in the gear box of main part front end, the main part includes casing and back cover, the back cover is inside to be located to the casing rear end and with the back cover intercommunication setting, be equipped with stator-rotor subassembly in the casing, stator-rotor subassembly front end is established and is connected the gear box, the back cover both sides are provided with the air inlet grille, the inside right side wall of back cover has tightly pasted the semiconductor refrigeration piece, the inside wind-proof circle that is equipped with of casing, the wind-proof circle is located stator-rotor subassembly left side, the outside right side of back cover is equipped with the fan, the fan is connected with the fin, the fin left end sets up inside the right side wall of back cover, the inside opening of intercommunication has been seted up to the main part front side.
2. The heat dissipating structure of claim 1, wherein the right side wall of the rear housing has a plurality of cooling holes, and the cooling holes are located on the left side of the semiconductor cooling fin.
3. The heat dissipating structure of claim 1, wherein the rotor front end of the stator and rotor assembly is provided with a rotor bearing, the rotor front end is provided with a pinion, the pinion is positioned on the left side of the rotor bearing, and the pinion is engaged with a large gear inside the gear box.
4. The heat dissipating structure of claim 1, wherein the housing and the back cover are connected by a snap-in connection.
5. The heat dissipating structure of claim 1, wherein said heat sink is symmetrically arranged in two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321529141.3U CN220007705U (en) | 2023-06-14 | 2023-06-14 | Heat radiation structure of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321529141.3U CN220007705U (en) | 2023-06-14 | 2023-06-14 | Heat radiation structure of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220007705U true CN220007705U (en) | 2023-11-14 |
Family
ID=88674833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321529141.3U Active CN220007705U (en) | 2023-06-14 | 2023-06-14 | Heat radiation structure of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220007705U (en) |
-
2023
- 2023-06-14 CN CN202321529141.3U patent/CN220007705U/en active Active
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