A motor casing

Abstract

The utility model provides a motor casing, belonging to the technical field of motors. It solves the problem of poor heat dissipation of existing casings. The motor casing includes a front cover and a barrel, and a rear bearing seat coaxial with the barrel is formed at the rear end of the barrel. The front cover is composed of a coaxially arranged front ring body and a rear ring body and a circle of connecting strips for connecting the front ring body and the rear ring body, and the connecting strip is located between the front ring body and the rear ring body; a front bearing seat is formed on the rear side of the front ring body; the rear ring body is pressed on the front end surface of the barrel, and the rear ring body is fixedly connected to the barrel by a circle of screws, and a lateral air diffuser is formed between the two adjacent connecting strips and the rear ring body and the front ring body, and the head of each screw is located in the corresponding lateral air diffuser; a circle of axial air diffusers is axially penetrated on the front ring body, and the axial air diffuser is staggered from the position of the front bearing seat. The motor casing has good heat dissipation.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors and relates to a motor casing. Background Art

[0002] The motor casing is a protective shell for important internal components of the motor. Its structure is as disclosed in the Chinese Patent Library, a high-strength motor casing (application number: 202320197083.2), including a motor casing body arranged in a cylindrical structure, motor end covers for improving the working strength are arranged at both ends of the motor casing body, a plurality of heat dissipation holes 1 for dissipating the heat inside the motor are opened on the motor casing body, axial holes are opened on the center parts of the two motor end covers, a plurality of reinforcing ribs for improving the working strength are arranged on the motor end covers, a plurality of through-hole portions connected to the motor casing body are arranged between two adjacent reinforcing ribs, a plurality of heat dissipation holes 2 for accelerating the heat dissipation inside the motor are opened on the plurality of reinforcing ribs, and the two motor end covers are fixedly connected to the motor casing body by fastening bolts.

[0003] There are two problems with the above motor housing: 1. The main body of the motor housing is in direct contact with the outside for heat dissipation through a circle of through holes arranged on the motor end cover, and the heat dissipation speed is not very good; 2. The head of the fastening bolt is pressed on the motor end cover and is completely exposed to the outside, which increases the probability of loosening due to external force collision. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a motor casing with good heat dissipation.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a motor casing, including a front cover and a barrel, a rear bearing seat coaxial with the barrel is formed at the rear end of the barrel, and the front cover is composed of a coaxially arranged front ring body and a rear ring body and a circle of connecting strips for connecting the front ring body and the rear ring body, and the connecting strip is located between the front ring body and the rear ring body; a front bearing seat coaxial with the front ring body is formed on the rear side of the front ring body; the rear ring body is pressed on the front end surface of the barrel, and the rear ring body is fixedly connected to the barrel by a circle of screws, and the axis of the screws is parallel to the axis of the barrel; a lateral air diffusion port is formed between two adjacent connecting strips and the rear ring body and the front ring body, the number of the lateral air diffusion ports and the screws is the same, and the head of each screw is located in the corresponding lateral air diffusion port; the front end surface of the rear ring body is a plane, and the head of the screw is pressed on the plane; a circle of axial air diffusion ports axially penetrates the front ring body, and the axial air diffusion ports are staggered from the position of the front bearing seat.

[0006] A circle of axial air diffusion ports and lateral air diffusion ports are respectively arranged on the front end surface and side wall of the front cover, which effectively increases the hollow area of ​​the front cover, greatly improves the heat dissipation speed of the casing, and improves the life and working stability of the motor.

[0007] The screw head is hidden in the side air vent, which can reduce the chance of the screw head being hit from the side, thereby reducing the chance of the screw loosening. That is, in the present application, the side air vent has both the effects of protecting the screw and improving the heat dissipation of the casing, having a dual function, simplifying the structure and facilitating assembly.

[0008] In the above-mentioned motor casing, the above-mentioned lateral air diffusion ports and axial air diffusion ports are both in the shape of an arc coaxial with the barrel, so as to further increase the hollow area of ​​the front cover and achieve better heat dissipation of the casing.

[0009] In the motor housing, the outer diameter of the front ring body is smaller than the outer diameter of the rear ring body, the connecting strip is inclined, and the connecting strip gradually moves away from the central axis of the barrel from front to back. The above design is adopted to make the lateral air diffuser be inclined, which is convenient for screw installation.

[0010] In the motor housing, the front end surface of the front ring body is axially penetrated by bolt holes, the number of bolt holes and axial air diffusers is the same, and the bolt holes and axial air diffusers are alternately distributed along the circumference of the barrel. The bolt holes are provided to facilitate the overall positioning and installation of the motor.

[0011] In the motor housing, a circular ring matching the barrel is formed on the rear end of the rear ring body, and the circular ring is inserted into the front end of the barrel. The circular ring plays a role of installation guide, which facilitates the connection between the front cover and the barrel.

[0012] In the motor housing, a plurality of annular grooves are provided on the outer wall of the barrel and are distributed along the axial direction of the barrel, and the annular grooves are arranged coaxially with the barrel. The plurality of annular grooves are provided on the outer wall of the barrel, which can effectively increase the heat exchange area of ​​the barrel and further improve the heat dissipation of the housing.

[0013] In the motor housing, two adjacent annular grooves are connected end to end to form a heat dissipation groove, and the axial cross-section of the heat dissipation groove is wavy to further enhance the heat exchange area of ​​the barrel.

[0014] In the above motor housing, the front cover is a cast integral part to ensure that the front cover has high strength.

[0015] In the above-mentioned motor casing, the rear ring body is arranged opposite to the front bearing seat; the front cover is also formed with a circle of ribs between the rear ring body and the front bearing seat, and the two ends of the ribs extend to the inner wall of the rear ring body and the outer wall of the front bearing seat respectively, so as to effectively enhance the strength of the rear ring body and make the connection between the rear ring body and the barrel more stable.

[0016] Compared with the prior art, the motor housing has the following advantages:

[0017] 1. A circle of axial air diffusers and lateral air diffusers are respectively arranged on the front end face and side wall of the front cover, which effectively increases the hollow area of ​​the front cover, greatly improves the heat dissipation speed of the casing, and improves the life and working stability of the motor.

[0018] 2. The screw head is hidden in the lateral air vent, which can reduce the chance of the screw head being hit from the side, thereby reducing the chance of the screw loosening. That is, in the present application, the lateral air vent has the two major effects of protecting the screw and improving the heat dissipation of the casing, having a dual function, simplifying the structure and facilitating assembly.

[0019] 3. The front cover is also formed with a circle of ribs between the rear ring body and the front bearing seat, which can effectively strengthen the strength of the rear ring body and make the connection between the rear ring body and the barrel more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the motor.

[0021] Figure 2 It is a schematic diagram of the connection between the barrel and the front cover.

[0022] In the figure, 1, front cover; 1a, front ring body; 1a1, front bearing seat; 1a2, axial air diffuser; 1a3, bolt hole; 1b, rear ring body; 1b1, circular ring; 1c, connecting strip; 1d, lateral air diffuser; 1e, rib; 2, barrel; 2a, rear bearing seat; 2b, annular groove; 3, screw. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 As shown, the motor housing includes a coaxially arranged front cover 1 and a barrel 2, and the barrel 2 and the front cover 1 are both made of heat-conducting materials, so that the motor housing itself has good heat dissipation.

[0025] in,

[0026] A rear bearing seat 2 a coaxial with the barrel 2 is formed at the rear end of the barrel 2 .

[0027] like Figure 1 and Figure 2As shown, the front cover 1 is composed of a coaxially arranged front ring body 1a and a rear ring body 1b and a circle of connecting strips 1c for connecting the front ring body 1a and the rear ring body 1b, the rear ring body 1b is between the front ring body 1a and the barrel 2, and the connecting strips 1c are between the front ring body 1a and the rear ring body 1b. Among them, the rear side of the front ring body 1a is formed with a front bearing seat 1a1 coaxial with the front ring body 1a; the rear ring body 1b is pressed on the front end surface of the barrel 2, and the rear ring body 1b is fixedly connected to the barrel 2 through a circle of screws 3, and the axis of the screws 3 is parallel to the axis of the barrel 2; a lateral air diffuser 1d is formed between two adjacent connecting strips 1c and the rear ring body 1b and the front ring body 1a, and the number of lateral air diffuser 1d and screws 3 is the same, and the head of each screw 3 is in the corresponding lateral air diffuser 1d. The front end surface of the rear ring body 1b is a plane, and the head of the screw 3 is pressed on the plane. A circle of axial air diffusion openings 1a2 axially penetrates the front ring body 1a, and the axial air diffusion openings 1a2 are staggered from the front bearing seat 1a1.

[0028] A circle of axial air diffusion openings 1a2 and lateral air diffusion openings 1d are respectively arranged on the front end surface and the side wall of the front cover 1, which effectively increases the hollow area of ​​the front cover 1, greatly improves the heat dissipation speed of the casing, and improves the life and working stability of the motor.

[0029] The head of the screw 3 is hidden in the lateral air vent 1d, which can reduce the probability of the head of the screw 3 being hit from the side, thereby reducing the probability of the screw 3 loosening. That is, in the present application, the lateral air vent 1d has the two major effects of protecting the screw 3 and improving the heat dissipation of the casing, and has a dual function, which simplifies the structure and facilitates assembly.

[0030] In this embodiment,

[0031] The screw 3 is installed as follows: a through hole is axially penetrated on the rear ring body 1b, and a threaded hole is axially opened on the front end face of the barrel 2. The through holes, threaded holes and screws 3 are the same in number and have corresponding positions. The screw 3 passes through the corresponding through hole and is screwed into the corresponding threaded hole.

[0032] The front cover 1 is a cast one-piece to ensure that the front cover 1 has high strength. Among them, the rear ring body 1b is arranged opposite to the front bearing seat 1a1; the front cover 1 also has a circle of ribs 1e formed between the rear ring body 1b and the front bearing seat 1a1, and the ribs 1e are distributed at intervals along the circumference of the front cover 1, and the two ends of the ribs 1e extend to the inner wall of the rear ring body 1b and the outer wall of the front bearing seat 1a1 respectively, so as to effectively strengthen the strength of the rear ring body 1b and make the connection between the rear ring body 1b and the barrel 2 more stable.

[0033] In order to facilitate the installation of the screw 3, the lateral air diffuser 1d and the axial air diffuser 1a2 are both in the shape of an arc coaxial with the barrel 2, the outer diameter of the front ring body 1a is smaller than the outer diameter of the rear ring body 1b, the connecting strip 1c is arranged at an angle, and the connecting strip 1c gradually moves away from the central axis of the barrel 2 from the front to the back, so that the lateral air diffuser 1d is arranged at an angle. Further explanation, a circular ring 1b1 matching the barrel 2 is formed on the rear end of the rear ring body 1b, and the circular ring 1b1 is inserted into the front end of the barrel 2. The circular ring 1b1 serves as an installation guide to facilitate the connection between the front cover 1 and the barrel 2.

[0034] like Figure 2 As shown, the outer wall of the barrel 2 is provided with a plurality of annular grooves 2b distributed along the axial direction of the barrel 2, and the annular grooves 2b are coaxially arranged with the barrel 2. The plurality of annular grooves 2b are arranged on the outer wall of the barrel 2, which can effectively increase the heat exchange area of ​​the barrel 2 to further improve the heat dissipation of the casing. Further explanation is given, two adjacent annular grooves 2b are connected end to end to form a heat dissipation groove, and the axial cross-section of the heat dissipation groove is wavy to further enhance the heat exchange area of ​​the barrel 2.

[0035] In actual products, the front end surface of the front ring body 1a is axially penetrated by bolt holes 1a3, the number of bolt holes 1a3 and the number of axial air diffuser ports 1a2 are the same, and the bolt holes 1a3 and the axial air diffuser ports 1a2 are alternately distributed along the circumference of the barrel 2. The bolt holes 1a3 are provided to facilitate the overall positioning and installation of the motor.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A motor housing, comprising a front cover (1) and a barrel (2), wherein a rear bearing seat (2a) coaxial with the barrel (2) is formed at the rear end of the barrel (2), characterized in that: The front cover (1) is composed of a front ring body (1a) and a rear ring body (1b) which are coaxially arranged, and a circle of connecting strips (1c) for connecting the front ring body (1a) and the rear ring body (1b), and the connecting strip (1c) is located between the front ring body (1a) and the rear ring body (1b); a front bearing seat (1a1) coaxial with the front ring body (1a) is formed on the rear side of the front ring body (1a); the rear ring body (1b) is pressed onto the front end surface of the barrel (2), and the rear ring body (1b) is fixedly connected to the barrel (2) by a circle of screws (3), and the axis of the screws (3) is aligned with the barrel. (2) the axes are parallel; a lateral air diffuser (1d) is formed between two adjacent connecting strips (1c) and the rear ring body (1b) and the front ring body (1a); the number of the lateral air diffuser (1d) and the number of the screws (3) are the same, and the head of each screw (3) is located in the corresponding lateral air diffuser (1d); the front end surface of the rear ring body (1b) is a plane, and the head of the screw (3) is pressed on the plane; a circle of axial air diffuser (1a2) is axially penetrated on the front ring body (1a), and the position of the axial air diffuser (1a2) and the front bearing seat (1a1) are staggered.

2. The motor housing according to claim 1, characterized in that: The lateral air diffusion port (1d) and the axial air diffusion port (1a2) are both in the shape of an arc coaxial with the barrel (2).

3. The motor housing according to claim 2, characterized in that: The outer diameter of the front ring body (1a) is smaller than the outer diameter of the rear ring body (1b), the connecting strip (1c) is arranged in an inclined manner, and the connecting strip (1c) gradually moves away from the central axis of the barrel (2) from front to back.

4. The motor housing according to claim 1, 2 or 3, characterized in that: The front end surface of the front ring body (1a) is also axially penetrated by bolt holes (1a3), the number of the bolt holes (1a3) and the number of the axial air diffusion ports (1a2) are the same, and the bolt holes (1a3) and the axial air diffusion ports (1a2) are alternately distributed along the circumference of the barrel (2).

5. The motor housing according to claim 1, 2 or 3, characterized in that: A circular ring (1b1) matching the barrel (2) is formed on the rear end of the rear ring body (1b), and the circular ring (1b1) is inserted into the front end of the barrel (2).

6. The motor housing according to claim 1, characterized in that: A plurality of annular grooves (2b) distributed along the axial direction of the barrel (2) are provided on the outer wall of the barrel (2), and the annular grooves (2b) are coaxially arranged with the barrel (2).

7. The motor housing according to claim 6, characterized in that: Two adjacent annular grooves (2b) are connected end to end to form a heat dissipation groove, and the axial cross-section of the heat dissipation groove is wavy.

8. The motor housing according to claim 2 or 3, characterized in that: The front cover (1) is a cast one-piece part.

9. The motor housing according to claim 8, characterized in that: The rear ring body (1b) is arranged opposite to the front bearing seat (1a1); the front cover (1) is also formed with a circle of ribs (1e) between the rear ring body (1b) and the front bearing seat (1a1), and the two ends of the ribs (1e) extend to the inner wall of the rear ring body (1b) and the outer wall of the front bearing seat (1a1) respectively.

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