CN216134381U

CN216134381U - Low-noise brushless motor

Info

Publication number: CN216134381U
Application number: CN202122078939.8U
Authority: CN
Inventors: 陈雪江
Original assignee: Zhejiang Chuanghong Intelligent Technology Co ltd
Current assignee: Zhejiang Chuanghong Intelligent Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-25
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a low-noise brushless motor, comprising: the motor comprises a housing, a stator and a rotor core, wherein the stator and the rotor core are positioned in the housing, the rotor core is positioned in the stator, a front cover and a rear cover are respectively installed on the front end surface and the rear end surface of the housing, the rotor core is fixed on the outer side surface of a rotor shaft, two ends of the rotor shaft are respectively connected with the front cover and the rear cover through a front bearing and a rear bearing, a fan blade is sleeved on the rotor shaft and positioned between the stator, the rotor core and the front cover, a plurality of exhaust holes are formed in the peripheral area of the fan blade of the housing at intervals, and a plurality of air inlet holes are formed in the rear cover at intervals. The low-noise brushless motor is more beneficial to the outside air to enter the motor from the air inlet and to be discharged from the air outlet, the cooling of the motor is ensured, and the service life of the motor is prolonged.

Description

Low-noise brushless motor

Technical Field

The utility model relates to the technical field of motors, in particular to a low-noise brushless motor.

Background

The structure of the direct current motor is composed of a stator and a rotor, wherein the stationary part of the direct current motor is called the stator when the direct current motor operates, the stator mainly functions to generate a magnetic field, the rotating part of the direct current motor is called the rotor when the direct current motor operates, the main functions of the rotor are to generate electromagnetic torque and induced electromotive force, and the rotor is a pivot for energy conversion of the direct current motor, so the rotor is also called an armature. Direct current motors are widely used due to their good speed regulation performance, but there is still room for improvement in existing direct current motors.

Disclosure of Invention

The utility model aims to provide a low-noise brushless motor, which is more favorable for external air to enter the motor from an air inlet and to be discharged from an air outlet, ensures the cooling of the motor, and prolongs the service life of the motor.

In order to achieve the purpose, the utility model adopts the technical scheme that: a low noise brushless motor comprising: the motor comprises a housing, a stator and a rotor core, wherein the stator and the rotor core are positioned in the housing, the rotor core is positioned in the stator, a front cover and a rear cover are respectively installed on the front end surface and the rear end surface of the housing, the rotor core is fixed on the outer side surface of a rotor shaft, two ends of the rotor shaft are respectively connected with the front cover and the rear cover through a front bearing and a rear bearing, a fan blade is sleeved on the rotor shaft and positioned between the stator, the rotor core and the front cover, a plurality of exhaust holes are formed in the peripheral area of the fan blade of the housing at intervals, and a plurality of air inlet holes are formed in the rear cover at intervals.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the front cover is provided with 2 threaded holes.

2. In the above scheme, the rear end face of the rotor shaft is flush with the outer surface of the rear cover.

3. In the above scheme, the air inlet is an arc-shaped air inlet.

4. In the scheme, the shape of the exhaust hole is strip-shaped.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model relates to a low-noise brushless motor, wherein fan blades are sleeved on a rotor shaft and positioned between a stator, a rotor iron core and a front cover, a plurality of exhaust holes are formed in the peripheral area of a machine shell positioned on the fan blades at intervals, a plurality of air inlet holes are formed in the rear cover at intervals, when the motor rotates at a high speed, the rotor iron core and the fan blades drive air to circulate, so that external air can enter the motor from the air inlet holes and is exhausted from the exhaust holes, the cooling of the motor is ensured, and the service life of the motor is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional view of a low noise brushless motor according to the present invention;

FIG. 2 is a schematic diagram of the right-hand side view of FIG. 1;

FIG. 3 is a left side view schematic of the structure of FIG. 1;

fig. 4 is a schematic bottom view of fig. 1.

In the above drawings: 1. a housing; 2. a stator; 3. a rotor core; 4. a front cover; 5. a rear cover; 6. a rotor shaft; 7. a front bearing; 8. a rear bearing; 9. a fan blade; 10. an air inlet; 11. an exhaust hole; 12. a threaded bore.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1: a low noise brushless motor comprising: the motor comprises a housing 1, a stator 2 and a rotor core 3, wherein the stator 2 and the rotor core 3 are positioned in the housing 1, the rotor core 3 is positioned in the stator 2, a front cover 4 and a rear cover 5 are respectively installed on the front end face and the rear end face of the housing 1, the rotor core 3 is fixed on the outer side surface of a rotor shaft 6, two ends of the rotor shaft 6 are respectively connected with the front cover 4 and the rear cover 5 through a front bearing 7 and a rear bearing 8, a fan blade 9 is sleeved on the rotor shaft 6 and positioned between the stator 2, the rotor core 3 and the front cover 4, a plurality of exhaust holes 11 are formed in the peripheral area of the fan blade 9 of the housing 1 at intervals, and a plurality of air inlet holes 10 are formed in the rear cover 5 at intervals.

The air inlet holes 10 are arc-shaped air inlet holes.

The rear end face of the rotor shaft 6 is flush with the outer surface of the rear cover 5.

The exhaust holes 11 are formed in a bar shape.

Example 2: a low noise brushless motor comprising: the motor comprises a housing 1, a stator 2 and a rotor core 3, wherein the stator 2 and the rotor core 3 are positioned in the housing 1, the rotor core 3 is positioned in the stator 2, a front cover 4 and a rear cover 5 are respectively installed on the front end face and the rear end face of the housing 1, the rotor core 3 is fixed on the outer side surface of a rotor shaft 6, two ends of the rotor shaft 6 are respectively connected with the front cover 4 and the rear cover 5 through a front bearing 7 and a rear bearing 8, a fan blade 9 is sleeved on the rotor shaft 6 and positioned between the stator 2, the rotor core 3 and the front cover 4, a plurality of exhaust holes 11 are formed in the peripheral area of the fan blade 9 of the housing 1 at intervals, and a plurality of air inlet holes 10 are formed in the rear cover 5 at intervals.

The front cover 4 is provided with 2 threaded holes 12.

The air inlet hole 10 is an arc-shaped air inlet hole, and the air outlet hole 11 is in a strip shape.

When the low-noise brushless motor is adopted, the fan blades are sleeved on the rotor shaft and positioned between the stator, the rotor core and the front cover, the plurality of exhaust holes are formed in the area, located on the periphery of the fan blades, of the machine shell at intervals, the plurality of air inlet holes are formed in the rear cover at intervals, when the motor rotates at a high speed, the rotor core and the fan blades drive air to circulate together, external air can enter the motor from the air inlet holes and is discharged from the exhaust holes, the motor is cooled and guaranteed, and the service life of the motor is prolonged.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A low noise brushless motor characterized in that: the method comprises the following steps: casing (1) and stator (2), rotor core (3) that are located casing (1), this rotor core (3) are located stator (2), protecgulum (4) and hou gai (5) are installed respectively to terminal surface before casing (1) and rear end face, rotor core (3) are fixed in the outside surface of a rotor shaft (6), rotor shaft (6) both ends are connected with protecgulum (4) and hou gai (5) through fore bearing (7) and rear bearing (8) respectively, and a fan blade (9) suit is on rotor shaft (6) and is located between stator (2), rotor core (3) and protecgulum (4), casing (1) are located the regional interval ground of fan blade (9) and are opened a plurality of exhaust hole (11), the interval ground is opened on hou gai (5) has a plurality of inlet port (10).

2. The low noise brushless motor of claim 1, wherein: the front cover (4) is provided with 2 threaded holes (12).

3. The low noise brushless motor of claim 1, wherein: the air inlet holes (10) are arc-shaped air inlet holes.

4. The low noise brushless motor of claim 1, wherein: the rear end face of the rotor shaft (6) is flush with the outer surface of the rear cover (5).

5. The low noise brushless motor of claim 1, wherein: the shape of the exhaust hole (11) is strip-shaped.