CN215357779U - Dustproof wind guiding mechanism of angle mill - Google Patents
Dustproof wind guiding mechanism of angle mill Download PDFInfo
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- CN215357779U CN215357779U CN202121409298.3U CN202121409298U CN215357779U CN 215357779 U CN215357779 U CN 215357779U CN 202121409298 U CN202121409298 U CN 202121409298U CN 215357779 U CN215357779 U CN 215357779U
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- wind guide
- dustproof
- guide mechanism
- rotor shaft
- head shell
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Abstract
The utility model discloses a dustproof wind guide mechanism of an angle grinder, which comprises a head shell, a rotor shaft and fan blades, wherein part of the rotor shaft extends into the head shell, the fan blades are arranged on the rotor shaft, a plurality of air outlets are arranged on the head shell, a dustproof wind guide mechanism is arranged between each fan blade and the head shell, a plurality of wind guide openings are arranged in the outer edge area of the dustproof wind guide mechanism, and wind guide sheets are arranged between every two wind guide openings; the central area of dustproof wind guide mechanism is provided with a plurality of annular grooves with different diameters, and the side of the fan blade facing the dustproof wind guide mechanism is provided with a plurality of annular raised lines matched with the annular grooves one by one.
Description
Technical Field
The utility model relates to the technical field of angle grinders, in particular to a dustproof air guide mechanism of an angle grinder.
Background
An angle grinder, also called a grinder or a disc grinder, is a portable electric tool for cutting and grinding glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials.
The existing angle grinder has the following defects: 1. the angle grinder has the advantages that a good dustproof structure is not provided, external dust can easily enter the angle grinder during working, the dust entering the angle grinder is difficult to clean, and the dust can easily damage internal components of the angle grinder after coming down for a long time; 2. when the fan blades conduct fluid guiding to dissipate heat, no good wind guide design exists, so that the wind channel is not concentrated, and the effect is not good.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the dustproof wind guide mechanism of the angle grinder, which is simple in structure and can play a better dustproof wind guide role.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a dustproof wind guide mechanism of an angle grinder comprises a head shell, a rotor shaft and fan blades, wherein part of the rotor shaft extends into the head shell, the fan blades are installed on the rotor shaft, a plurality of air outlets are formed in the head shell, a dustproof wind guide mechanism is arranged between each fan blade and the head shell, a plurality of wind guide openings are formed in the outer edge area of the dustproof wind guide mechanism, and wind guide pieces are arranged between every two wind guide openings; the central area of dustproof wind guide mechanism is provided with a plurality of annular grooves with different diameters, and the side of the fan blade facing the dustproof wind guide mechanism is provided with a plurality of annular raised lines matched with the annular grooves one by one.
In the above technical scheme, further, the number of the annular grooves and the annular convex strips is at least two, and the axial center of the rotor shaft is used as the center of a circle.
In the technical scheme, the wind guide cover is further arranged, the wind guide cover is matched with the dustproof wind guide mechanism to cover the fan blades, a wind guide channel is formed between the side, with the blades, of the fan blades and the inner wall of the wind guide cover, and the wind guide channel guides wind inside the angle grinder to flow to the wind guide opening.
In the above technical scheme, further, a dustproof sealing ring is arranged between the dustproof air guide mechanism and the head shell.
The utility model has the beneficial effects that: 1. the labyrinth dustproof channel formed by the annular groove and the annular convex strip can effectively prevent dust from entering the transmission mechanism, ensure the transmission reliability and reduce the noise caused by the dust; 2. an air guide channel is formed by the air guide cover, so that air flow in the angle grinder can quickly and intensively flow to the air guide opening, and the heat dissipation efficiency is improved.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is another angle internal structure diagram of the present invention.
Fig. 3 is a schematic view of the dustproof wind guiding mechanism of the present invention.
Fig. 4 is a schematic view of a fan blade structure of the present invention.
FIG. 5 is a schematic view of the wind scooper of the present invention
In the figure: 1. the wind power generation device comprises a head shell, a machine shell, a tail cover, a wind outlet, a rotor shaft, an output shaft, a fan blade, an annular protruding strip, a dustproof wind guiding mechanism, a wind guiding opening, a wind guiding sheet, a ring-shaped groove, a bolt, a dustproof channel, a wind guiding cover, a wind guiding channel, a dustproof sealing ring and a rubber column, wherein the head shell is 2, the machine shell is 3, the tail cover is 4, the wind outlet is 5, the rotor is 6, the rotor shaft is 7, the output shaft is 8, the annular protruding strip is 81, the dustproof wind guiding mechanism is 9, the wind guiding opening is 91, the wind guiding sheet is 92, the annular groove is 93, the bolt is 10, the dustproof channel is 11, the wind guiding cover is 12, the wind guiding channel is 13, the dustproof sealing ring is 14, and the rubber column is 15.
Detailed Description
Referring to fig. 1-5, a dustproof wind guide mechanism of an angle grinder is disclosed, which is suitable for a handheld angle grinder, the angle grinder body includes a head housing 1, a casing 2 and a tail cover 3, the head housing 1 generally adopts aluminum material, a plurality of air outlets 4 are arranged on the head housing 1, a motor is arranged in the casing 2, a rotor shaft 6 of a motor rotor 5 partially extends into the head housing 1 and is matched with a gear to drive an output shaft 7 to rotate, a fan blade 8 rotating along with the rotor shaft is fixedly arranged on the end of the rotor shaft 6 close to the output shaft, a dustproof wind guide mechanism 9 is arranged between the fan blade 8 and the head housing 1, and the dustproof wind guide mechanism 9 and the casing 2 are fixedly matched through a plurality of bolts 10 which sequentially penetrate the head housing 1, the dustproof wind guide mechanism 9 and the casing 2. The outer edge area of the dustproof wind guide mechanism 9 is provided with a plurality of wind guide ports 91, a wind guide sheet 92 which is obliquely arranged between every two wind guide ports 91 is arranged, the central area of the dustproof wind guide mechanism 9 is provided with two annular grooves 93 with different diameters, the side of the fan blade 8 facing the dustproof wind guide mechanism 9 is provided with two annular convex strips 81 which are matched with the annular grooves 93 one by one, and the annular grooves 93 and the annular convex strips 81 are matched to form a mutually staggered labyrinth type dustproof channel 11. The annular groove 93 and the annular protrusion 81 are distributed around the axial center of the rotor shaft 6.
In order to achieve a better wind guiding effect, the wind guiding cover 12 is further arranged, the wind guiding cover 12 is used for providing an increased inclination angle, the wind guiding cover 12 is matched with the dustproof wind guiding mechanism 9 to cover the fan blades 8, the wind guiding cover 12 is fixed on the inner wall of the machine shell 2 through a rubber column 15, and meanwhile, the outer edge of the wind guiding cover 12 is arranged between the dustproof wind guiding assembly 9 and the machine shell 2. The side of the fan blade 8 with the blade and the inner wall of the wind guide cover 12 form a wind guide channel 13, and the wind guide channel 13 guides the wind inside the angle grinder to flow to the wind guide opening 91. During operation, the fan blade 8 rotates at a high speed, negative pressure is formed inside the casing 2, air flow enters from the tail cover 3, flows through the outer side of the motor, passes through the air guide channel 12 and finally flows out of the head casing 1, and therefore internal heat is taken away, and the cooling effect is achieved. Meanwhile, the labyrinth dustproof channel 11 formed by the annular groove 93 and the annular convex strip 81 can effectively prevent dust from entering the transmission mechanism, ensure the transmission reliability and reduce the noise caused by the dust.
In order to further ensure the dustproof effect, a dustproof sealing ring 14 is arranged between the dustproof air guide mechanism 9 and the head shell 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.
Claims (4)
1. A dustproof wind guide mechanism of an angle grinder comprises a head shell, a rotor shaft and fan blades, wherein part of the rotor shaft extends into the head shell, the fan blades are installed on the rotor shaft, and a plurality of air outlets are formed in the head shell; the central area of dustproof wind guide mechanism is provided with a plurality of annular grooves with different diameters, and the side of the fan blade facing the dustproof wind guide mechanism is provided with a plurality of annular raised lines matched with the annular grooves one by one.
2. The dustproof wind guide mechanism for the angle grinder of claim 1, wherein the number of the annular grooves and the annular ribs is at least two, and the annular grooves and the annular ribs are centered around the axial center of the rotor shaft.
3. The dustproof wind guide mechanism of the angle grinder as claimed in claim 1 or 2, wherein a wind guide cover is further provided, the wind guide cover and the dustproof wind guide mechanism are matched to cover the fan blade, the side of the fan blade with the fan blade and the inner wall of the wind guide cover form a wind guide channel, and the wind guide channel guides wind inside the angle grinder to flow to the wind guide opening.
4. The dustproof wind guide mechanism of the angle grinder as claimed in claim 3, wherein a dustproof sealing ring is arranged between the dustproof wind guide mechanism and the head shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409298.3U CN215357779U (en) | 2021-06-24 | 2021-06-24 | Dustproof wind guiding mechanism of angle mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409298.3U CN215357779U (en) | 2021-06-24 | 2021-06-24 | Dustproof wind guiding mechanism of angle mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215357779U true CN215357779U (en) | 2021-12-31 |
Family
ID=79604883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121409298.3U Active CN215357779U (en) | 2021-06-24 | 2021-06-24 | Dustproof wind guiding mechanism of angle mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215357779U (en) |
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2021
- 2021-06-24 CN CN202121409298.3U patent/CN215357779U/en active Active
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