Motor casing

Abstract

The utility model provides a motor casing, which solves the problem that the processing difficulty of the existing casing is large. The motor shell comprises a front end cover, a rear end cover and a machine barrel fixed between the front end cover and the rear end cover, a circle of heat dissipation assembly is arranged on the outer wall of the machine barrel, the heat dissipation assembly comprises a plurality of first heat dissipation fins formed on the outer wall of the machine barrel, and the first heat dissipation fins extend front and back in the length direction. The plurality of first radiating fins in the same radiating assembly are divided into two groups of radiating units which are symmetrically distributed in the circumferential direction, and each group of radiating units comprises at least two first radiating fins which are distributed in the circumferential direction at equal intervals; the two ends and the middle of the first cooling fin are in a straight strip shape, the two ends of the first cooling fin are parallel to the axis of the machine barrel, and the two ends of the first cooling fin are staggered so that the middle of the first cooling fin can incline relative to the axis of the machine barrel. The motor casing is low in processing difficulty.

Description

Technical Field

[0001] This utility model relates to an electric motor, and more particularly to an electric motor housing. Background Technology

[0002] The motor housing is an important component of the motor, mainly used to protect internal components (such as the stator and rotor), provide mechanical support, and dissipate heat.

[0003] Existing motor housings, such as the motor heat dissipation housing disclosed in the Chinese Patent Database (application number: 201320856271.8), include a cylindrical housing. The housing is characterized by: a plurality of raised strips evenly arranged on the inner circumference of the housing, the length direction of the raised strips being consistent with the axial direction of the housing, the raised strips being integrally formed with the housing; a plurality of heat dissipation fins evenly arranged on the outer circumference of the housing, the length direction of the heat dissipation fins being the same as the length direction of the raised strips, and the cross-section of the heat dissipation fins being wavy.

[0004] In actual products, metal casings are generally formed by casting. However, in the aforementioned casing, the heat sinks form a wavy, curved shape in the radial direction of the casing, which is not conducive to the design of casting molds and increases the design and manufacturing difficulty. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a motor housing with good heat dissipation and low manufacturing difficulty.

[0006] The objective of this utility model can be achieved through the following technical solution: an electric motor housing, including a front cover, a rear cover, and a cylinder fixed between the front cover and the rear cover, wherein a heat dissipation assembly is provided on the outer wall of the cylinder, the heat dissipation assembly includes a plurality of first heat dissipation fins formed on the outer wall of the cylinder, and the length of the first heat dissipation fins extends front and rear, characterized in that the plurality of first heat dissipation fins in the same heat dissipation assembly are divided into two groups of heat dissipation units that are circumferentially symmetrically distributed, and each group of heat dissipation units includes at least two first heat dissipation fins that are circumferentially equidistantly distributed; both ends and the middle of the first heat dissipation fins are straight strips, both ends of the first heat dissipation fins are parallel to the axis of the cylinder, and the two ends of the first heat dissipation fins are staggered so that the middle of the first heat dissipation fin is inclined relative to the axis of the cylinder.

[0007] The first heat sink is set so that its two ends are parallel to the axis of the barrel and its middle part is inclined relative to the axis of the barrel, so that the first heat sink is roughly wavy in the axial direction. This not only enhances the heat exchange effect by increasing the heat dissipation area of ​​the first heat sink, but also enhances the airflow turbulence effect by the shape and arrangement of the first heat sink, thereby further enhancing the heat dissipation effect and efficiency.

[0008] Meanwhile, the two ends and the middle of the first heat sink are both straight strips, which can effectively reduce the shape of the first heat sink in the radial direction of the barrel, so that the structure of the first heat sink is simpler, thereby greatly reducing the processing and manufacturing difficulty.

[0009] In the aforementioned motor housing, a second heat sink is formed on the outer wall of the casing. The second heat sink is straight and its length extends parallel to the axial direction of the casing. The second heat sink is also provided between the front sides of the two heat dissipation units within the same heat dissipation assembly. Because there is a large space between the front sides of the two heat dissipation units, placing the second heat sink at this location not only further enhances the heat exchange area of ​​the casing but also further enhances the airflow turbulence effect at this point, thereby further improving the heat dissipation of the housing.

[0010] In the aforementioned motor housing, a straight strip-shaped front heat sink is formed on the outer wall of the front cover, and the length extension direction of the front heat sink is parallel to the axial direction of the cylinder; the number of front heat sinks and the first heat sinks are the same and their positions correspond one-to-one, and the rear end of the front heat sink is in contact with the front end of the corresponding first heat sink.

[0011] In the aforementioned motor housing, a straight strip-shaped rear heat sink is formed on the outer wall of the rear end cover, and the length extension direction of the rear heat sink is parallel to the axial direction of the cylinder; the number of rear heat sinks and the first heat sinks are the same and their positions correspond one-to-one, and the front end of the rear heat sink contacts and connects with the rear end of the corresponding first heat sink.

[0012] By setting the front and rear heat sinks to contact the front and rear ends of the first heat sink respectively, the heat exchange area can be further increased, and the airflow path can be extended, making the heat dissipation of the casing better and faster.

[0013] In the aforementioned motor housing, a third heat sink in the shape of a straight strip is formed on the outer wall of the front end cover, and the length extension direction of the third heat sink is parallel to the axial direction of the cylinder; the number of the second heat sink and the third heat sink are the same and their positions correspond one-to-one, and the rear end of the third heat sink contacts and connects with the front end of the corresponding second heat sink.

[0014] In the aforementioned motor housing, a plurality of fourth heat sinks are formed on the rear end face of the rear end cover, which are distributed in a left-right manner, and the length of the fourth heat sinks extends vertically.

[0015] In the aforementioned motor housing, the two ends and the middle of the fourth heat sink are both straight strips, the two ends of the fourth heat sink are both vertically arranged, and the two ends of the fourth heat sink are staggered so that the middle of the fourth heat sink is inclined.

[0016] In the aforementioned motor housing, the inclination direction of the middle part of the fourth heat sink located on the left side of the rear end cover is opposite to the inclination direction of the middle part of the fourth heat sink located on the right side of the rear end cover.

[0017] In the aforementioned motor housing, the casing is a single cast component.

[0018] Compared with existing technologies, this motor housing has the following advantages:

[0019] 1. The two ends of the first heat sink are parallel to the axis of the barrel, and the middle part is inclined relative to the axis of the barrel, so that the first heat sink is roughly wavy in the axial direction. This not only enhances the heat exchange effect by increasing the heat dissipation area of ​​the first heat sink, but also enhances the airflow turbulence effect by the shape and arrangement of the first heat sink, thereby further enhancing the heat dissipation effect and efficiency.

[0020] 2. The two ends and the middle of the first heat sink are both straight strips, which can effectively reduce the shape of the first heat sink in the radial direction of the barrel, so as to make the structure of the first heat sink simpler and thus greatly reduce the processing and manufacturing difficulty. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an electric motor.

[0022] Figure 2 This is a right-side view of the electric motor.

[0023] Figure 3 This is a rear view diagram of the electric motor.

[0024] Figure 4 This is a cross-sectional view of an electric motor.

[0025] In the figure, 1 is the front cover; 1a is the front positioning block; 1b is the front heat sink; 1c is the third heat sink; 2 is the rear cover; 2a is the rear positioning block; 2b is the rear heat sink; 2c is the fourth heat sink; 3 is the barrel; 3a is the connecting pipe; 3b is the first heat sink; 3c is the second heat sink; 4 is the heat dissipation assembly; 4a is the heat dissipation unit. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1As shown, the motor housing includes a front cover 1, a rear cover 2, and a cylinder 3 fixed between the front cover 1 and the rear cover 2, with the cylinder 3, front cover 1, and rear cover 2 arranged coaxially. The cylinder 3, front cover 1, and rear cover 2 are made of metal materials such as cast iron and aluminum alloy, and are connected as follows: a connecting pipe 3a is formed on the outer wall of the cylinder 3 in an axial direction; a front positioning block 1a is correspondingly provided on the front cover 1, and a rear positioning block 2a is correspondingly provided on the rear cover 2; the front positioning block 1a and the rear positioning block 2a respectively press against the two ends of the corresponding connecting pipe 3a, and both the front positioning block 1a and the rear positioning block 2a are fixed to the connecting pipe 3a by screws.

[0028] Specifically

[0029] A ring of heat dissipation components 4 is provided on the outer wall of the barrel 3. In the actual product, the number of heat dissipation components 4 and connecting pipes 3a are the same, and the heat dissipation components 4 and connecting pipes 3a are alternately distributed along the circumference of the barrel 3.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, the heat dissipation assembly 4 includes a plurality of first heat dissipation fins 3b integrally formed on the outer wall of the barrel 3, and the length of the first heat dissipation fins 3b extends front to back. The plurality of first heat dissipation fins 3b in the same heat dissipation assembly 4 are divided into two groups of heat dissipation units 4a that are circumferentially symmetrically distributed, and each group of heat dissipation units 4a includes at least two first heat dissipation fins 3b that are circumferentially equidistant. In the actual product, the heat dissipation unit 4a includes three first heat dissipation fins 3b. The two ends and the middle of the first heat dissipation fins 3b are both straight strips, wherein the two ends of the first heat dissipation fins 3b are parallel to the axis of the barrel 3, and the two ends of the first heat dissipation fins 3b are staggered so that the middle of the first heat dissipation fins 3b is inclined relative to the axis of the barrel 3.

[0031] The first heat sink 3b is arranged so that its two ends are parallel to the axis of the barrel 3 and its middle part is inclined relative to the axis of the barrel 3, so that the first heat sink 3b is roughly wavy in the axial direction. This not only enhances the heat exchange effect by increasing the heat dissipation area of ​​the first heat sink 3b, but also enhances the airflow turbulence effect by the shape and arrangement of the first heat sink 3b, thereby further enhancing the heat dissipation effect and efficiency.

[0032] Meanwhile, the two ends and the middle of the first heat sink 3b are both straight strips, which can effectively reduce the shape of the first heat sink 3b in the radial direction of the barrel 3, so that the structure of the first heat sink 3b is simpler, thereby greatly reducing the processing and manufacturing difficulty.

[0033] To further explain, a second heat sink 3c is integrally formed on the outer wall of the casing 3. The second heat sink 3c is straight and its length extends parallel to the axis of the casing 3. The aforementioned second heat sink 3c is provided between the front sides of the two heat dissipation units 4a within the same heat dissipation assembly 4. Since there is a large space between the front sides of the two heat dissipation units 4a, the placement of the second heat sink 3c at this position not only further enhances the heat exchange area of ​​the casing 3, but also further enhances the airflow turbulence effect at this location, thereby further enhancing the heat dissipation of the casing.

[0034] like Figure 1 and Figure 2 As shown, a straight strip-shaped front heat sink 1b is formed on the outer wall of the front cover 1, and the length extension direction of the front heat sink 1b is parallel to the axial direction of the casing 3. The number of front heat sinks 1b and the first heat sinks 3b are the same and their positions correspond one-to-one, and the rear end of the front heat sink 1b contacts and connects with the front end of the corresponding first heat sink 3b. A straight strip-shaped rear heat sink 2b is formed on the outer wall of the rear cover 2, and the length extension direction of the rear heat sink 2b is parallel to the axial direction of the casing 3. The number of rear heat sinks 2b and the first heat sinks 3b are the same and their positions correspond one-to-one, and the front end of the rear heat sink 2b contacts and connects with the rear end of the corresponding first heat sink 3b. By setting the front heat sink 1b and the rear heat sink 2b to contact and connect with the front end and the rear end of the first heat sink 3b, respectively, the heat exchange area can be further increased, and the airflow path can be extended, making the heat dissipation of the casing better and faster.

[0035] Furthermore, a straight strip-shaped third heat sink 1c is formed on the outer side wall of the front cover 1, and the length extension direction of the third heat sink 1c is parallel to the axis of the barrel 3; the number of the second heat sink 3c and the third heat sink 1c are the same and their positions correspond one-to-one, and the rear end of the third heat sink 1c contacts and connects with the front end of the corresponding second heat sink 3c.

[0036] like Figure 3 As shown, a plurality of fourth heat sinks 2c are formed on the rear end face of the rear end cover 2, arranged horizontally, and the length of the fourth heat sinks 2c extends vertically. Specifically, both ends and the middle of the fourth heat sink 2c are straight strips, both ends of the fourth heat sink 2c are vertically arranged, and the two ends of the fourth heat sink 2c are staggered so that the middle of the fourth heat sink 2c is inclined. Furthermore, the inclination direction of the middle of the fourth heat sink 2c on the left side of the rear end cover 2 is opposite to the inclination direction of the middle of the fourth heat sink 2c on the right side of the rear end cover 2.

[0037] In the actual product, both the barrel 3 and the front cover 1 are integrally cast parts.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An electric motor housing, comprising a front cover (1), a rear cover (2), and a cylinder (3) fixed between the front cover (1) and the rear cover (2), wherein a heat dissipation assembly (4) is provided on the outer wall of the cylinder (3), the heat dissipation assembly (4) comprising a plurality of first heat dissipation fins (3b) formed on the outer wall of the cylinder (3), and the length of the first heat dissipation fins (3b) extends front to back, characterized in that, The first heat sinks (3b) in the same heat dissipation component (4) are divided into two groups of heat dissipation units (4a) that are symmetrically distributed in the circumferential direction, and each group of heat dissipation units (4a) contains at least two first heat sinks (3b) that are equidistantly distributed in the circumferential direction; the two ends and the middle of the first heat sink (3b) are both straight strips, the two ends of the first heat sink (3b) are parallel to the axis of the barrel (3), and the two ends of the first heat sink (3b) are staggered so that the middle of the first heat sink (3b) is inclined relative to the axis of the barrel (3).

2. The motor housing according to claim 1, characterized in that, A second heat sink (3c) is also formed on the outer wall of the barrel (3). The second heat sink (3c) is straight and its length extension direction is parallel to the axis of the barrel (3). The second heat sink (3c) is provided between the front sides of the two heat sink units (4a) in the same heat sink assembly (4).

3. The motor housing according to claim 1, characterized in that, The front cover (1) has a straight strip-shaped front heat sink (1b) formed on its outer side wall, and the length extension direction of the front heat sink (1b) is parallel to the axis of the barrel (3); the number of front heat sinks (1b) and the first heat sink (3b) are the same and their positions correspond one to one, and the rear end of the front heat sink (1b) is in contact with the front end of the corresponding first heat sink (3b).

4. The motor housing according to claim 1, characterized in that, The rear heat sink (2b) is formed on the outer side wall of the rear cover (2), and the length extension direction of the rear heat sink (2b) is parallel to the axis of the barrel (3); the number of rear heat sinks (2b) and the first heat sink (3b) are the same and their positions correspond one-to-one, and the front end of the rear heat sink (2b) contacts and connects with the rear end of the corresponding first heat sink (3b).

5. The motor housing according to claim 2, characterized in that, The outer side wall of the front cover (1) is also formed with a straight strip-shaped third heat sink (1c), and the length extension direction of the third heat sink (1c) is parallel to the axis of the barrel (3); the number of the second heat sink (3c) and the third heat sink (1c) are the same and their positions correspond one to one, and the rear end of the third heat sink (1c) is in contact with the front end of the corresponding second heat sink (3c).

6. The motor housing according to claim 1, characterized in that, The rear end cover (2) has several fourth heat sinks (2c) formed on its rear end surface, which are distributed in a left-right manner, and the length of the fourth heat sinks (2c) extends vertically.

7. The motor housing according to claim 6, characterized in that, The fourth heat sink (2c) is straight at both ends and in the middle. Both ends of the fourth heat sink (2c) are vertically arranged. The two ends of the fourth heat sink (2c) are staggered so that the middle of the fourth heat sink (2c) is inclined.

8. The motor housing according to claim 7, characterized in that, The tilt direction of the middle part of the fourth heat sink (2c) located on the left side of the rear end cover (2) is opposite to the tilt direction of the middle part of the fourth heat sink (2c) located on the right side of the rear end cover (2).

9. The motor housing according to claim 1, characterized in that, The barrel (3) is a cast integral part.

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