Motor, air blower and vehicle

Abstract

The utility model relates to the technical field of vehicle engineering, and discloses a motor, an air blower and a vehicle. The motor comprises a brush carrier assembly and a rear end cover, the brush carrier assembly is installed in the rear end cover, a first air inlet is formed in one side of the rear end cover and located in one side of the brush carrier assembly, the rear end cover is provided with a guide wall, the guide wall is located between the brush carrier assembly and the first air inlet, and the guide wall is in a fan shape. The cross section of the side, facing the first air inlet, of the guide wall comprises an arc-shaped section and an extension section which are sequentially connected, and the extension section extends in the axial direction of the motor. The guide wall can filter impurities in the air to prevent fine particle foreign matters from directly impacting the surface of the commutator, so that the dustproof effect is achieved, and the service life of the brush carrier assembly is prolonged; moreover, the arc-shaped section and the extension section of the guide wall can guide the air into the motor, the heat dissipation efficiency is improved, the guide wall is fan-shaped, the guide wall can guide the air into the rear end cover, and the heat dissipation efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle engineering technical field especially relates to a motor, air blower and vehicle. BACKGROUND

[0002] As an important part of automobile equipment industry, automobile air conditioner has been more and more concerned by people. In recent years, with the increasingly strict environmental protection policy and the white-hot market competition, the automobile air conditioner blower is the core part of automobile air conditioner, and the motor in the air blower works, air enters the motor, and the fine particles in the air directly impact the commutator in the motor, resulting in the damage of the commutator and the reduction of the service life of the motor.

[0003] Therefore, there is an urgent need for a motor, air blower and vehicle to solve the above problems. UTILITY MODEL CONTENT

[0004] Based on the above, the utility model aims to provide a motor, air blower and vehicle to prevent fine particles from directly impacting the surface of the commutator, achieve dustproof effect and improve heat dissipation efficiency.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] In the first aspect, a motor is provided, which includes a brush holder assembly and a rear end cover, the brush holder assembly is installed in the rear end cover, one side of the rear end cover is provided with a first air inlet, the first air inlet is located on one side of the brush holder assembly, the rear end cover is provided with a guide wall, the guide wall is located between the brush holder assembly and the first air inlet, the guide wall is fan-shaped, and the cross section of one side of the guide wall towards the first air inlet includes an arc segment and an extension segment connected in sequence, and the extension segment extends along the axial direction of the motor.

[0007] As a preferred technical scheme of the motor, the radius of the arc segment ranges from 3mm to 5mm.

[0008] As a preferred technical scheme of the motor, the angular amplitude of the fan-shaped guide wall ranges from 75° to 85°.

[0009] As a preferred technical scheme of the motor, the side wall of the rear end cover is provided with a plurality of second air inlets in the circumferential direction.

[0010] As a preferred technical scheme of the motor, the first air inlet and the second air inlet are square.

[0011] As a preferred technical scheme of the motor, the brush holder assembly comprises a support, a commutator and a plug, the commutator is installed on the support, the support is detachably connected to the inner wall of the rear end cover, the support is in the shape of "1", the rear end cover is provided with an installation notch, the installation notch and the first air inlet are located on the two sides of the support, and the plug is installed in the installation notch.

[0012] As a preferred technical scheme of the motor, the brush holder assembly further comprises a plurality of rubber pads, the plurality of rubber pads are installed at the two ends of the support, the inner wall of the rear end cover is provided with a plurality of clamping grooves, the rubber pads and the clamping grooves are in one-to-one correspondence, and the rubber pads can be clamped in the clamping grooves.

[0013] As a preferred technical scheme of the motor, the motor further comprises a stator shell and a front end cover, and the front end cover and the rear end cover are clamped at the two ends of the stator shell.

[0014] As a preferred technical scheme of the motor, the rear end cover is made of plastic.

[0015] In the second aspect, the air blower comprises the motor according to any one of the preceding aspects.

[0016] In the third aspect, the vehicle comprises the air blower.

[0017] The air blower has the following beneficial effects:

[0018] The motor, the air blower and the vehicle are provided, and when the motor works, air enters the rear end cover through the first air inlet and blows towards the guide wall, and then the air preferentially contacts the guide wall, on one hand, fine particulate foreign matters in the air directly impact the guide wall, the guide wall can filter impurities in the air, preventing the fine particulate foreign matters from directly impacting the surface of the commutator, so as to achieve a dustproof effect and improve the service life of the brush holder assembly, on the other hand, the arc segment and the extension segment of the guide wall can guide the air to the inside of the motor, the extension segment can increase the guiding distance, so that the air can sufficiently heat the motor, improving the heat dissipation efficiency, and the guide wall is in the shape of a fan, the guide wall can guide the air to the inside of the rear end cover, effectively taking away the heat in the inside of the rear end cover, further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the present application and the drawings.

[0020] Figure 1 is a structural diagram of a motor provided by the embodiment of the utility model;

[0021] Figure 2 is an exploded view of the motor provided by the embodiment of the utility model;

[0022] Figure 3 is a partial structural diagram of the motor provided by the embodiment of the utility model;

[0023] Figure 4 is a structural diagram of the rear end cover provided by the embodiment of the utility model.

[0024] The signs in the figure are as follows:

[0025] 1, brush holder assembly; 11, support; 12, commutator; 13, plug; 14, rubber pad;

[0026] 2, rear end cover; 21, first air inlet; 22, guide wall; 221, arc segment; 222, extension segment; 23, second air inlet; 24, clamping groove; 25, installation notch;

[0027] 3, stator shell; 4, front end cover; 5, stator; 6, mover assembly. DETAILED DESCRIPTION

[0028] The utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or only indicates that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under" includes that first feature is in second feature directly below and obliquely below, or only indicates that first feature horizontal height is less than second feature.

[0031] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and 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, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0032] In the prior art, when the motor in the air blower works, air enters the inside of the motor, and the fine particles in the air directly impact the commutator inside the motor, causing the commutator to be damaged, reducing the service life of the motor.

[0033] To solve the above problems, as shown in the embodiment, a vehicle is provided, the vehicle comprising an air blower, the air blower comprising a motor. Figures 1-4 The motor comprises a brush holder assembly 1 and a rear end cover 2, the brush holder assembly 1 being installed in the rear end cover 2, one side of the rear end cover 2 being provided with a first air inlet 21, the first air inlet 21 being located on one side of the brush holder assembly 1, the rear end cover 2 being provided with a guide wall 22, the guide wall 22 being located between the brush holder assembly 1 and the first air inlet 21, the guide wall 22 being fan-shaped, and the cross section of the side of the guide wall 22 facing the first air inlet 21 comprising an arc segment 221 and an extension segment 222 connected in sequence, the extension segment 222 extending along the axial direction of the motor.

[0034] When the motor is working, air enters the rear cover 2 through the first air inlet 21 and blows towards the guide wall 22. The air then preferentially contacts the guide wall 22. On the one hand, fine particles in the air directly impact the guide wall 22, which filters impurities in the air and prevents them from directly impacting the commutator 12 surface, thus achieving a dustproof effect and improving the service life of the brush holder assembly 1. On the other hand, the arc-shaped section 221 and the extension section 222 of the guide wall 22 can guide the air into the motor. The extension section 222 can increase the guiding distance so that the air can fully dissipate heat from the motor, improving the heat dissipation efficiency. Moreover, the guide wall 22 is fan-shaped, which can guide the air into the rear cover 2, effectively removing the heat inside the rear cover 2 and further improving the heat dissipation efficiency.

[0035] Preferably, such as Figure 1 and Figure 3 As shown, the radius of the arc segment 221 ranges from 3mm to 5mm. Specifically, the radius of the arc segment 221 is 3mm, 4mm, or 5mm. Utilizing the high air guiding efficiency of the curved surface of the arc segment 221, external air can be introduced into the motor for heat dissipation with maximum efficiency. At the same time, water molecules carried in by the external air are discharged to the outside of the motor through the arc surface.

[0036] Furthermore, the angular radius of the fan-shaped guide wall 22 ranges from 75° to 85°. Specifically, the angular radius of the guide wall 22 can be 75°, 80°, or 85° to prevent foreign objects in the air and water from directly contacting the surface of the commutator 12 as much as possible, thereby improving the lifespan of the commutator 12.

[0037] Preferably, such as Figure 2 and Figure 4 As shown, the side wall of the rear cover 2 is provided with multiple second air inlets 23 along the circumference, and air can also enter the motor through the second air inlets 23, further improving the heat dissipation efficiency of the motor.

[0038] In this embodiment, the first air inlet 21 and the second air inlet 23 are square. Compared with circular holes or other shapes, square holes have the largest area. By setting the maximum cross-sectional area of ​​the first air inlet 21 and the second air inlet 23, the heat dissipation effect can be improved.

[0039] Furthermore, such as Figure 1 and Figure 2 As shown, the brush holder assembly 1 includes a bracket 11, a commutator 12, and a plug 13. The commutator 12 is mounted on the bracket 11. The bracket 11 is detachably connected to the inner wall of the rear end cover 2. The bracket 11 is in the shape of an "I". The rear end cover 2 is provided with an installation notch 25. The installation notch 25 and the first air inlet 21 are located on both sides of the bracket 11. The plug 13 is installed in the installation notch 25. The first air inlet 21 is the main air inlet.

[0040] Preferably, the brush holder assembly 1 further comprises a plurality of rubber pads 14, the plurality of rubber pads 14 are installed at both ends of the support 11, the inner wall of the rear end cover 2 is provided with a plurality of clamping grooves 24, the rubber pads 14 and the clamping grooves 24 correspond one by one, the rubber pads 14 can be clamped in the clamping grooves 24, which can effectively reduce the vibration noise of the automobile air conditioner blower during work. In the embodiment, the rubber pads 14 are four, and two rubber pads 14 are installed at both ends of the support 11 respectively.

[0041] The motor further comprises a stator housing 3 and a front end cover 4, the front end cover 4 and the rear end cover 2 are clamped at both ends of the stator housing 3, the inner wall of the stator housing 3 is installed with a stator 5, the center of the stator 5 is provided with a rotor assembly 6, both ends of the rotor assembly 6 are rotatably connected to the front end cover 4 and the rear end cover 2 respectively, and the stator 5 can drive the rotor assembly 6 to rotate.

[0042] In the prior art, the rear end cover of the conventional automobile air conditioner blower motor is made of metal, which is heavy, simple in structure, single in function, and needs to be rust-proof treated on the surface. In the embodiment, the rear end cover 2 is made of plastic material, which is lighter in weight and realizes lightweight design, and the plastic material is easy to be formed, the side wall of the rear end cover 2 is processed with four second air inlets 23 and one first air inlet 21, and the square hole hollow structure is adopted in five directions for heat dissipation, which is beneficial to the heat dissipation of the blower.

[0043] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An electric motor characterized by, The application relates to a brush holder assembly (1) and a rear end cover (2), the brush holder assembly (1) is installed in the rear end cover (2), one side of the rear end cover (2) is provided with a first air inlet (21), the first air inlet (21) is located at one side of the brush holder assembly (1), the rear end cover (2) is provided with a guide wall (22), the guide wall (22) is located between the brush holder assembly (1) and the first air inlet (21), the guide wall (22) is in a fan shape, and the cross section of one side of the guide wall (22) towards the first air inlet (21) comprises an arc segment (221) and an extension segment (222) connected in sequence, and the extension segment (222) extends along the axial direction of the motor.

2. The electric motor of claim 1, wherein, The radius of the arc segment (221) ranges from 3mm to 5mm.

3. The electric motor of claim 1, wherein, The angular radian of the fan-shaped guide wall (22) ranges from 75 DEG to 85 DEG.

4. The electric motor of claim 1, wherein, The side wall of the rear end cover (2) is provided with a plurality of second air inlets (23) in the circumferential direction.

5. The electric motor of claim 4, wherein, The first air inlet (21) and the second air inlet (23) are square.

6. The electric motor of any one of claims 1-5, wherein, The brush holder assembly (1) comprises a support (11), a commutator (12) and a plug (13), the commutator (12) is installed on the support (11), the support (11) is detachably connected to the inner wall of the rear end cover (2), the support (11) is in a "I" shape, the rear end cover (2) is provided with an installation gap (25), the installation gap (25) and the first air inlet (21) are located at two sides of the support (11), and the plug (13) is installed in the installation gap (25).

7. The electric motor of claim 6, wherein, The brush holder assembly (1) further comprises a plurality of rubber pads (14), the rubber pads (14) are installed at two ends of the support (11), the inner wall of the rear end cover (2) is provided with a plurality of clamping grooves (24), the rubber pads (14) and the clamping grooves (24) are in one-to-one correspondence, and the rubber pads (14) can be clamped in the clamping grooves (24).

8. The electric motor of any one of claims 1-5, wherein, The motor further comprises a stator shell (3) and a front end cover (4), the front end cover (4) and the rear end cover (2) are clamped at two ends of the stator shell (3).

9. A blower, characterized by The application relates to a motor comprising any one of the brush holder assemblies according to claims 1-8.

10. A vehicle characterized by comprising: The application relates to a blower comprising the motor according to claim 9.

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