CN210444096U

CN210444096U - Brushless motor

Info

Publication number: CN210444096U
Application number: CN201921662673.8U
Authority: CN
Inventors: 周洋
Original assignee: Ningbo Fujia Industrial Co Ltd
Current assignee: Ningbo Fujia Industrial Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-05-01
Anticipated expiration: 2029-10-08

Abstract

The utility model relates to the technical field of electric machines, especially, relate to a brushless motor. It includes casing (1), support (2) and sets up rotor (3) between casing (1) and support (2), just casing (1) includes rotor seat (4), solid fixed ring (5) and shell (6), set up fastening muscle (7) between rotor seat (4) and solid fixed ring (5), be equipped with air guide muscle (8) between solid fixed ring (5) and shell (6), air guide muscle (8) divide into first air guide muscle and second air guide muscle, first air guide muscle sets up between solid fixed ring (5) and shell (6) with the even interval of second air guide muscle, just the height that highly is greater than the second air guide muscle of first air guide muscle. The brushless motor has a good air guide effect.

Description

Brushless motor

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a brushless motor.

Background

The small permanent magnet brushless direct current motor is exquisite in structure, is widely applied due to the advantages of high working efficiency, low noise and the like, and almost extends to various fields of aerospace, national defense, industrial and agricultural production and daily life. The electric fan is usually applied to household appliances such as electric fans, electric hair dryers, handheld dust collectors and the like in daily life.

Permanent magnetism direct current brushless motor generally includes casing and support, and the rotor setting is between casing and support, and the casing generally includes rotor seat, solid fixed ring and shell, is equipped with the fastening muscle between solid fixed ring and the rotor seat, is provided with a plurality of wind guiding muscle between solid fixed ring and the shell, but prior art's wind guiding muscle height all is the same, and the wind-guiding effect is relatively poor like this.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the brushless motor with the good air guide effect is provided.

The utility model adopts the technical proposal that: the utility model provides a brushless motor, includes casing, support and sets up the rotor between casing and support, just the casing includes rotor seat, solid fixed ring and shell, set up fastening muscle between rotor seat and the solid fixed ring, be equipped with the wind guiding muscle between solid fixed ring and the shell, the wind guiding muscle divide into first wind guiding muscle and second wind guiding muscle, first wind guiding muscle sets up between solid fixed ring and shell with the even interval of second wind guiding muscle, just the height that highly is greater than the second wind guiding muscle of first wind guiding muscle.

Compared with the prior art in the structure more than adopting, the utility model has the advantages of it is following: the air guide ribs are arranged to be different in height and arranged at intervals, so that the air guide effect is better.

Preferably, the air guiding rib is in the shape of an airfoil. The wing-shaped wind guide ribs are adopted, wind can be released from the head parts of the two ribs to the tail parts of the two ribs, and the wind guide effect is better.

Preferably, the diameter of the lower end of the inner surface of the fixing ring is larger than the diameter of the upper end of the inner surface. Therefore, the inner surface of the fixing ring is made into a horn-shaped opening, and a good wind gathering effect can be achieved.

Preferably, the bracket is provided with a first mounting part for mounting the rotor and a second mounting part for mounting the bracket on the casing, the heat dissipation holes are arranged between the first mounting part and the second mounting part, and the heat dissipation holes are also arranged between the second mounting part and the edge of the bracket. Set up a plurality of louvres on the support, can make things convenient for the motor to dispel the heat like this under the prerequisite that does not influence the support normal function.

Preferably, the outer end surface of the second mounting member is a circular arc surface. Set up like this, the back is installed on the casing to the second installed part, and the support is also less to the windage of the wind of leading from the casing, and then makes motor wind-guiding effect better.

Drawings

Fig. 1 is an exploded view of the brushless motor of the present invention.

Fig. 2 is a schematic structural diagram of the casing of the brushless motor according to the present invention.

Fig. 3 is a top view of the casing of the brushless motor of the present invention.

Fig. 4 is a schematic structural diagram of the bracket in the brushless motor of the present invention.

As shown in the figure: 1. a housing; 2. a support; 3. a rotor; 4. a rotor base; 5. a fixing ring; 6. a housing; 7. fastening ribs; 8. a wind guiding rib; 9. a first mounting member; 10. a second mount; 11. and (4) heat dissipation holes.

Detailed Description

The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the following specific embodiments.

A brushless motor includes a housing 1, a holder 2, and a rotor 3 disposed between the housing 1 and the holder 2, wherein:

the rotor 3 is a common rotor and is a relatively conventional structure in the prior art, so the rotor is not developed in detail;

casing 1 includes rotor seat 4, solid fixed ring 5 and shell 6, sets up fastening muscle 7 between rotor seat 4 and the solid fixed ring 5, is equipped with air guide muscle 8 between solid fixed ring 5 and the shell 6, wherein:

because the rotor 3 is a common rotor, the width of the rotor seat 4 can be smaller, so that the rotor seat 4 can be well fixed on the fixing ring 5 by adopting a group of three fastening ribs 7, and the three fastening ribs 7 are uniformly arranged between the fixing ring 5 and the rotor seat 4;

the diameter of the lower end of the inner surface of the fixing ring 5 is larger than that of the upper end of the inner surface, so that the wind gathering function can be well achieved, and the fixing ring 5 is provided with three mounting positions for mounting the bracket 2, wherein the three mounting positions are uniformly arranged on the fixing ring 5 and staggered with the fastening ribs 7;

the air guide ribs 8 are uniformly arranged between the fixing ring 5 and the shell 6, the shape of the air guide ribs 8 is similar to that of the wings of an airplane or a warhead shape, the air guide ribs 8 are horizontally placed, at the moment, the upper ends of the air guide ribs 8 are used as the upper ends, the lower end of the wind guiding rib 8 is used as the lower end, the joint of the wind guiding rib 8 and the fixed ring 5 is used as the front end, the joint of the wind guiding rib 8 and the shell 6 is used as the rear end, and the left end and the right end are judged according to the front end and the rear end, then the thickness of the upper end and the lower end of the air guiding rib 8 is limited to be smaller than the thickness of the middle part of the air guiding rib 8, the left side and the right side of the air guiding rib 8 are cambered surfaces, and the front section and the rear section of the air guiding rib 8 are in a willow leaf shape, so that the air guiding effect can be well achieved, and the air guiding ribs 8 are divided into a first air guiding rib and a second air guiding rib, and the upper and lower height of the first air guiding rib is larger than that of the second air guiding rib, the first air guiding ribs and the second air guiding ribs are uniformly arranged between the fixing ring 5 and the shell 6 at intervals;

the wind guiding ribs 8 are divided into connecting parts and wind guiding parts, the wind guiding ribs 8 are divided into the wind guiding ribs 8 connected with the installation positions and the wind guiding ribs 8 connected with other positions according to the positions, and the installation positions can protrude out of a part of the fixing ring 5, so that the wind guiding ribs 8 connected with the installation positions are longer in connecting parts or not in connecting parts, and the wind guiding parts are shorter, according to the specific embodiment, three wind guiding ribs 8 are connected with the installation parts, wherein the middle wind guiding rib 8 is not provided with the connecting parts, but the wind guiding parts are directly connected with the installation positions, the wind guiding ribs 8 on two sides are provided with the connecting parts, the connecting parts are longer than the wind guiding ribs 8 connected with other parts of the fixing ring 5, and the wind guiding parts of the three wind guiding ribs 8 are the same in length;

support 2, including first installed part 9 that is used for installing rotor 3 and be used for installing support 2 to casing 1 on second installed part 10, wherein first installed part 9 is one, set up at the middle part, second installed part 10 is three, evenly distributed along first installed part 9 circumference, and be equipped with louvre 11 between first installed part 9 and the second installed part 10, also be equipped with louvre 11 between second installed part 10 and the support 2 edge, through set up louvre 11 in these positions, can help the motor to dispel the heat, and can not influence the original function of support 2, and second installed part 10 outer terminal surface is the arc surface, and the distance of second installed part 10 outer end lower part and second installed part 10 center is less than the distance of second installed part 10 outer end upper part and second installed part 10 center.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a brushless motor, includes casing (1), support (2) and sets up rotor (3) between casing (1) and support (2), just casing (1) includes rotor seat (4), solid fixed ring (5) and shell (6), set up fastening muscle (7) between rotor seat (4) and solid fixed ring (5), be equipped with between solid fixed ring (5) and shell (6) wind guiding muscle (8), its characterized in that: air guide muscle (8) divide into first air guide muscle and second air guide muscle, first air guide muscle sets up between solid fixed ring (5) and shell (6) with the even interval of second air guide muscle, just the height that highly is greater than the second air guide muscle of first air guide muscle.

2. The brushless electric machine according to claim 1, wherein: the air guide ribs (8) are in the shape of wings.

3. The brushless electric machine according to claim 1, wherein: the diameter of the lower end of the inner surface of the fixing ring (5) is larger than that of the upper end of the inner surface.

4. The brushless electric machine according to claim 1, wherein: be equipped with on support (2) and be used for installing first installed part (9) of rotor (3) and be used for installing second installed part (10) on casing (1) with support (2), be equipped with louvre (11) between first installed part (9) and second installed part (10), just also be equipped with louvre (11) between second installed part (10) and support (2) edge.

5. The brushless electric machine of claim 4, wherein: the outer end face of the second mounting piece (10) is an arc face.