CN217769691U

CN217769691U - Dust-protection brushless motor

Info

Publication number: CN217769691U
Application number: CN202221876543.6U
Authority: CN
Inventors: 刘斌
Original assignee: Zhongshan Yuelai Motor Technology Co ltd
Current assignee: Zhongshan Yuelai Motor Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-08
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses a dust-protection type brushless motor, including the brushless motor body, still include the circular dustproof shell of lower extreme open-ended, be equipped with the shaft hole on the up end of circular dustproof shell, the pivot of brushless motor body is passed the shaft hole upwards extends the equipartition has the air inlet groove on the up end of circular dustproof shell be equipped with loop type support piece in the circular dustproof shell, the brushless motor body sets up in the loop type support piece, the air runner that runs through about having in the loop type support piece install radiator fan on the terminal surface under the loop type support piece the lower extreme of circular dustproof shell is installed the lower extreme cover, the equipartition has out the air duct on the lower extreme cover, be equipped with first dust screen on the up end of lower extreme cover, install the second dust screen on the interior top surface of circular dustproof shell. The utility model has the advantages of simple and reasonable structure, supplementary motor body heat dissipation, assurance normal operating.

Description

Dust-protection type brushless motor

Technical Field

The utility model relates to a dust-protection type brushless motor.

Background

The brushless motor is a typical electromechanical integration product, because the brushless motor runs in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation, oscillation and step-out can not be generated when load suddenly changes, and permanent magnets of the brushless motor with medium and small capacity are mostly made of rare earth neodymium iron boron materials with high magnetic energy level at present.

The existing brushless motor can generate heat in the operation process, and the heat is continuously accumulated along with the lengthening of the operation time, so that the high temperature in the motor can be caused to influence the output power. Or even damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a dust type brushless motor.

A dust-protection brushless motor who designs according to this purpose includes the brushless motor body, still includes the circular dustproof shell of lower extreme open-ended, be equipped with the shaft hole on the up end of circular dustproof shell, the pivot of brushless motor body is passed the shaft hole upwards extends the equipartition has the air inlet groove on the up end of circular dustproof shell be equipped with loop type support piece in the circular dustproof shell, the brushless motor body sets up in the loop type support piece, the air runner that runs through about having in the loop type support piece install radiator fan under the loop type support piece on the terminal surface the lower extreme of circular dustproof shell is installed the lower extreme cover, the equipartition has the air-out groove on the lower extreme cover, be equipped with first dust screen on the up end of lower extreme cover, install the second dust screen on the interior top surface of circular dustproof shell.

Preferably, the annular support piece comprises a fixing ring fixedly arranged on the inner wall of the lower part of the circular dustproof shell, the fixing ring is provided with a plurality of inverted L-shaped supporting pieces along the circumferential array of the fixing ring, the air flow channel is positioned between the two inverted L-shaped supporting pieces, the upper end face and the side wall of the brushless motor body are both attached to the inverted L-shaped supporting pieces, a plurality of support frames are arranged on the inner wall of the fixing ring along the circumferential array of the fixing ring, and the upper end face of each support frame is attached to the lower end face of the brushless motor body.

Preferably, the support frame is L-shaped, a first mounting hole is formed in the support frame, the fixing ring corresponds to a first threaded hole formed in the position of the support frame, and a first bolt penetrates into the first mounting hole to be in threaded connection with the first threaded hole.

Preferably, the fixing ring is provided with a plurality of second threaded holes along the circumferential array of the fixing ring, the outer wall of the lower portion of the circular dustproof shell is provided with a plurality of first countersunk holes corresponding to the second threaded holes, and second bolts penetrate through the first countersunk holes and are in threaded connection with the second threaded holes.

Preferably, the upper end surface of the first dust screen is attached to the lower end surface of the annular support member, a threaded connection ring is arranged on the lower end cover, and the threaded connection ring is in threaded connection with the inner wall of the lower portion of the circular dust-proof shell.

Preferably, the second dust screen is disposed between an inner top surface of the circular dust-proof case and an upper end surface of the ring-shaped support.

Preferably, the brushless motor body comprises a motor shell, a stator assembly, a rotor assembly and a rotating shaft, and heat dissipation ventilation grooves are uniformly distributed on the end faces of the upper side and the lower side of the motor shell.

Preferably, bearings are mounted on the upper end face and the lower end face of the motor shell, and the upper end and the lower end of the rotating shaft are fixed on inner rings of the bearings.

The utility model has the advantages of simple and reasonable structure, supplementary motor body heat dissipation, assurance normal operating compare with current technique the equipartition has the air inlet duct on the up end of circular dustproof shell be equipped with loop type support piece in the circular dustproof shell, the brushless motor body sets up in the loop type support piece, the air runner that runs through from top to bottom has in the loop type support piece install radiator fan under the loop type support piece on the terminal surface the lower extreme of circular dustproof shell installs the lower extreme cover, the equipartition has the air outlet duct on the lower extreme cover, be equipped with first dust screen on the up end of lower extreme cover, install the second dust screen on the interior top surface of circular dustproof shell. The utility model discloses a set up a circular dust shell and be used for installing motor body, adopt loop type support piece to support motor body and form the air runner that is used for circulating air simultaneously. When heat is dissipated, the heat dissipation fan can drive air to flow downwards. The air enters from the air inlet groove, can take away the heat that brushless motor body produced when the air runner, then from air outlet groove output again. And the utility model discloses a first dust screen and second dust screen can isolated most dust to prevent that the dust from adhering on brushless motor body outer wall and influencing the heat dissipation.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the exploded cross-sectional structure of the present invention;

fig. 5 is a second schematic cross-sectional view of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 5, a dustproof brushless motor includes a brushless motor body 10, and further includes a circular dustproof housing 20 with an open lower end, a shaft hole is provided on an upper end face of the circular dustproof housing 20, a rotation shaft 140 of the brushless motor body 10 penetrates through the shaft hole and extends upwards, air inlet slots 220 are uniformly distributed on the upper end face of the circular dustproof housing 20, a ring-shaped support member 50 is provided in the circular dustproof housing 20, the brushless motor body 10 is provided in the ring-shaped support member 50, an air flow channel 530 penetrating from top to bottom is provided in the ring-shaped support member 50, a heat dissipation fan 70 is installed on a lower end face of the ring-shaped support member 50, a lower end cover 210 is installed at a lower end of the circular dustproof housing 20, air outlet slots are uniformly distributed on the lower end cover 210, a first dustproof mesh 30 is provided on an upper end face of the lower end cover 210, and a second dustproof mesh 40 is installed on an inner top face of the circular dustproof housing 20.

The utility model discloses a set up a circular dust cover and be used for installing motor body, adopt ring type support piece to support motor body and form the air runner that is used for the circulation air simultaneously. When heat is dissipated, the heat dissipation fan can drive air to flow downwards. The air enters from the air inlet groove, can take away the heat that the brushless motor body produced when passing through the air runner, and then export from the air outlet groove. And the utility model discloses a first dust screen and second dust screen can isolated most dust to prevent that the dust from adhering on brushless motor body outer wall and influencing the heat dissipation.

The present invention relates to a brushless motor, and more particularly, to a brushless motor having a brushless motor body 10.

Referring to fig. 2 to 5, the ring-shaped supporting member 50 includes a fixing ring 520 fixedly disposed on the inner wall of the lower portion of the circular dustproof case 20, the fixing ring 520 is provided with a plurality of inverted L-shaped supporting sheets 510 along a circumferential array thereof, the air flow channel 530 is located between the two inverted L-shaped supporting sheets 510, the upper end surface and the side wall of the brushless motor body 10 are both attached to the inverted L-shaped supporting sheets 510, the inner wall of the fixing ring 520 is provided with a plurality of supporting frames 60 along the circumferential array thereof, and the upper end surface of the supporting frame 60 is attached to the lower end surface of the brushless motor body 10.

That is, air enters from the air inlet duct and then flows down between the two inverted-L-shaped support sheets 510. The inverted-L support sheet 510 can support the brushless motor body and simultaneously can allow air to flow up and down.

Referring to fig. 2 to 5, the support frame 60 is L-shaped, a first mounting hole 610 is formed in the support frame 60, a first threaded hole 522 is formed in a position of the fixing ring 520 corresponding to the support frame 60, and a first bolt 620 penetrates through the first mounting hole 610 to be in threaded connection with the first threaded hole 522.

The utility model discloses in, support frame 60 and brushless motor body 10's lower terminal surface welded fastening. Further, it can also choose the fixed mode such as bolt to carry out fixed connection.

Namely, when assembling, fix ring type support piece in circular dirt proof housing, then from bottom to top with the motor embedding in ring type support piece, then adopt first bolt to carry out fixed connection with support frame and solid fixed ring.

Referring to fig. 3, a plurality of second threaded holes 521 are formed in the fixing ring 520 along a circumferential array thereof, a plurality of first platform sinking holes 201 corresponding to the second threaded holes 521 are formed in the outer wall of the lower portion of the circular dustproof shell 20, and second bolts 540 are inserted into the first platform sinking holes 201 and are in threaded connection with the second threaded holes 521. Simple structure, convenient assembly and good stability.

Referring to fig. 3, the upper end surface of the first dust screen 30 is attached to the lower end surface of the ring-shaped support 50, and a threaded connection ring 212 is disposed on the lower end cover 210, and the threaded connection ring 212 is in threaded connection with the inner wall of the lower portion of the circular dust-proof housing 20. Simple structure, convenient assembly and good stability.

Referring to fig. 2, the second dust screen 40 is disposed between an inner top surface of the circular dust case 20 and an upper end surface of the ring-shaped support 50. Namely, the second dustproof net is fixed by clamping the annular supporting frame and the circular dustproof shell.

Further, referring to fig. 2, the brushless motor body 10 of the present invention is composed of a motor housing 110, a stator assembly 130, a rotor assembly 120, and a rotating shaft 140, wherein heat dissipation ventilation grooves 111 are uniformly formed on the upper and lower end surfaces of the motor housing 110.

The heat dissipation ventilation slot 111 has the function of enabling air to enter the brushless motor body, so that the heat dissipation efficiency is further enhanced.

Further, bearings 150 are mounted on both upper and lower end surfaces of the motor housing 110, and both upper and lower ends of the rotating shaft 140 are fixed to an inner ring of the bearings 150.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of technical features indicated.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A dust-protection brushless motor, includes brushless motor body (10), its characterized in that: still include lower extreme open-ended circular dust shell (20), be equipped with the shaft hole on the up end of circular dust shell (20), pivot (140) of brushless motor body (10) pass the shaft hole upwards extends the equipartition has air inlet duct (220) on the up end of circular dust shell (20) be equipped with loop type support piece (50) in circular dust shell (20), brushless motor body (10) set up in loop type support piece (50), air flow channel (530) that run through about having in loop type support piece (50) install radiator fan (70) on the terminal surface under loop type support piece (50) lower end cover (210) are installed to the lower extreme of circular dust shell (20), the equipartition has the air outlet duct on lower end cover (210), be equipped with first dust screen (30) on the up end of lower end cover (210), install second dust screen (40) on the interior top surface of circular dust shell (20).

2. The dust-proof brushless motor according to claim 1, wherein: the annular support piece (50) comprises a fixing ring (520) fixedly arranged on the inner wall of the lower portion of the circular dustproof shell (20), a plurality of inverted L-shaped support sheets (510) are arranged on the fixing ring (520) along the circumferential array of the fixing ring, air flow channels (530) are located between the two inverted L-shaped support sheets (510), the upper end face and the side wall of the brushless motor body (10) are attached to the inverted L-shaped support sheets (510), a plurality of support frames (60) are arranged on the inner wall of the fixing ring (520) along the circumferential array of the fixing ring, and the upper end face of each support frame (60) is attached to the lower end face of the brushless motor body (10).

3. The dust-proof brushless motor according to claim 2, wherein: the support frame (60) is the L type, be equipped with first mounting hole (610) on support frame (60), gu fixed ring (520) correspond be equipped with first screw hole (522) on the position of support frame (60) penetrate first bolt (620) in first mounting hole (610) with first screw hole (522) threaded connection.

4. The dust-proof brushless motor according to claim 2, wherein: a plurality of second threaded holes (521) are formed in the fixing ring (520) along the circumferential array of the fixing ring, a plurality of first sinking platform holes (201) corresponding to the second threaded holes (521) are formed in the outer wall of the lower portion of the circular dustproof shell (20), and second bolts (540) penetrate into the first sinking platform holes (201) to be in threaded connection with the second threaded holes (521).

5. The dust-proof brushless motor according to any one of claims 1 to 4, wherein: the upper end face of the first dust screen (30) is attached to the lower end face of the annular supporting piece (50), a threaded connecting ring (212) is arranged on the lower end cover (210), and the threaded connecting ring (212) is in threaded connection with the inner wall of the lower portion of the circular dust-proof shell (20).

6. The dust-proof brushless motor according to any one of claims 2 to 4, wherein: the second dust screen (40) is arranged between the inner top surface of the circular dust-proof shell (20) and the upper end surface of the ring-shaped support (50).

7. The dust-proof brushless motor according to any one of claims 1 to 4, wherein: the brushless motor body (10) is composed of a motor shell (110), a stator component (130), a rotor component (120) and a rotating shaft (140), and heat dissipation ventilating grooves (111) are uniformly distributed on the end faces of the upper side and the lower side of the motor shell (110).

8. The dust-proof brushless motor according to claim 7, wherein: bearings (150) are mounted on the upper end face and the lower end face of the motor shell (110), and the upper end and the lower end of the rotating shaft (140) are fixed to the inner ring of the bearings (150).