Air-cooled motor casing structure
Through integrated molding and high-pressure casting technology, the problems of poor air-cooled motor housing structure complexity and air-cooling effect are solved, and the assembly and air-cooling effect are simplified, while reducing costs and increasing structural functionality.
Patent Information
- Application Number
- CN202420066079.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The existing air-cooled motor housing structure is complex in design and assembly, and the annular arrangement of the heat dissipation fins leads to poor air-cooling effect, and the extruded aluminum profile material is high and the processing cost is higher.
The casing body, heat sink fins and front end cover are integrated into a structure. The direction of the heat sink fins can be axial or radial. Combined with high-pressure casting technology, it increases structural complexity and designs breathing valves and sealing grooves to reduce assembly complexity and cost.
It achieves simplified assembly, improves integration and air cooling effects, reduces costs, and increases structural functionality such as waterproof and breathable functions.
Smart Images
Figure CN222282918U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motor housings, in particular to an air-cooled motor housing structure. Background Art
[0002] The existing air-cooled motor includes an air-cooled motor housing, a motor front cover and a motor rear cover, and the motor front cover, the motor rear cover and the motor housing are detachably connected; the air-cooled motor housing includes a shell and heat dissipation fins distributed on the outer surface of the shell, and the heat inside the air-cooled motor is transmitted to the outside through the heat dissipation fins; in addition, the motor housing, the motor front cover and the motor rear cover are often made of aluminum alloy. For details, please refer to the Chinese utility model patent with announcement number CN 220067077 U and name: A radial heat dissipation housing for an asynchronous motor.
[0003] The inventors found that:
[0004] (1) In the above technical solution, the motor housing needs to be matched with the front and rear end cover structures. The connection design and sealing design of the front and rear end covers increase the number of parts and the complexity of assembly;
[0005] (2) The cooling fins of the casing are arranged in a circular direction. When the wind direction is parallel to the axial direction of the casing, the cooling effect of this motor is poor;
[0006] (3) The existing air-cooled motor casing generally adopts extruded aluminum profiles, which have the advantages of simple molding process molds and stable product dimensions. However, the material cost of the extruded aluminum profile casing is high. At the same time, the characteristic of the extruded profile is that the cross-section is completely consistent, and the machining cost caused by adding design features is also very high. Utility Model Content
[0007] The purpose of the utility model is to provide an air-cooled motor casing structure, in which the casing body, heat dissipation fins and front end cover adopt an integrally formed structure, which reduces the complexity of assembly and improves the overall integration; at the same time, the heat dissipation fins are set in an axial or radial direction, which is consistent with the wind direction in the casing, and the air cooling effect is good.
[0008] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
[0009] The utility model is a kind of air-cooled motor casing structure, comprising a casing body, heat dissipation fins and a front end cover, wherein the casing body, heat dissipation fins and the front end cover are an integrally formed structure, and the front end cover is arranged at the bottom of the casing body; a No. 1 annular inner wall is arranged at the central position of the top of the front end cover, and the No. 1 annular inner wall is arranged to protrude inwardly; a No. 2 annular inner wall is arranged at the central position of the bottom of the front end cover, and the No. 2 annular inner wall is arranged to protrude outwardly; the No. 1 annular inner wall and the No. 2 annular inner wall are connected to form a bearing chamber.
[0010] Optionally, the heat dissipation fins are arranged in an axial or radial direction, which is consistent with the wind direction in the casing.
[0011] Optionally, sealing grooves are provided on the circumferential side of the second annular inner wall, the rear axle or the reducer.
[0012] Optionally, a base is provided at the bottom of the front end cover, and the base is arranged around the circumference of the second annular inner wall.
[0013] Optionally, the base includes an outer shell, a receiving hole is provided at the center of the outer shell, the second annular inner wall is provided in the receiving hole, and a reinforcing rib is provided between the receiving hole and the outer shell.
[0014] Optionally, a breathing valve mounting hole and a No. 1 threaded hole are provided on the base, and a breathing valve is installed in the breathing valve mounting hole.
[0015] Optionally, a No. 2 threaded hole is provided on the top of the casing body, and a rear end cover is threadedly connected to the No. 2 threaded hole.
[0016] Optionally, the casing body is a barrel-shaped casing structure, and a marking surface and a lifting lug are also provided on the casing body.
[0017] Optionally, the housing body, heat dissipation fins and front end cover are integrally formed by high-pressure casting.
[0018] Optionally, the shape of the base is compatible with the rear axle or the reducer.
[0019] The utility model has the following beneficial effects:
[0020] 1. The utility model provides an air-cooled motor casing structure, in which the casing body, heat dissipation fins and front end cover adopt an integrated molding structure, which reduces the complexity of assembly, improves the overall integration and reduces the cost; at the same time, the setting direction of the heat dissipation fins is axial or radial, which is consistent with the wind direction in the casing, and the air cooling effect is good.
[0021] 2. The casing structure of the utility model is high-pressure casting, so it is easy to increase the complexity of the structure, and more functions can be designed on the casing structure, such as the breathing valve installation hole at the bottom, the process positioning hole at the bottom, etc.
[0022] 3. A breathing valve is provided on the base of the utility model to maintain the waterproof and breathable function of the casing body when the temperature changes.
[0023] 4. A sealing groove is provided on the circumferential side of the second annular inner wall of the utility model, and the sealing of the external interface is achieved by an O-ring or other sealing means.
[0024] 5. The size of the heat sink fins can be adjusted according to the installation in the vehicle. The height of the fins can be partially reduced, or the fins can be partially removed to avoid air.
[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0028] Figure 2 It is a bottom view schematic diagram of the overall structure of the utility model;
[0029] Figure 3 For the utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.
[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0031] 1 housing body, 2 cooling fins, 3 front end cover, 4 No. 1 annular inner wall, 5 No. 2 annular inner wall, 6 bearing chamber, 7 sealing groove, 8 base, 9 reinforcing ribs, 10 breathing valve, 11 No. 1 threaded hole, 12 No. 2 threaded hole, 13 partial fins, 14 marking surface, 15 lifting ears. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0033] Embodiment 1:
[0034] See also Figure 1 , Figure 3As shown, the utility model is a fan-cooled motor casing structure, including a casing body 1, heat dissipation fins 2 and a front end cover 3, wherein the casing body 1, heat dissipation fins 2 and the front end cover 3 are an integrally formed structure, and the front end cover 3 is arranged at the bottom of the casing body 1; a No. 1 annular inner wall 4 is arranged at the central position of the top of the front end cover 3, and the No. 1 annular inner wall 4 is protruded inwardly; a No. 2 annular inner wall 5 is arranged at the central position of the bottom of the front end cover 3, and the No. 2 annular inner wall 5 is protruded outwardly; the No. 1 annular inner wall 4 and the No. 2 annular inner wall 5 are connected to form a bearing chamber 6.
[0035] like Figure 3 As shown, the casing body 1 is a barrel-shaped shell structure, and the casing body 1 is used for the assembly of the stator and rotor and for installation and fixation on the whole vehicle. The front end cover 3 and the casing body 1 are designed to be integrally formed by high-pressure casting, integrating the traditional front end cover 3 and the casing together, reducing the number of parts and assembly process, and also reducing costs.
[0036] A bearing chamber 6 is designed inside the casing body 1. The bearing chamber 6 is preferably lined with a steel sleeve to prevent bearing failure due to wear of the bearing seat.
[0037] The heat dissipation fins 2 reduce the motor temperature by heat exchange with the outside air. The heat dissipation fins 2 are arranged in an axial or radial direction, which is consistent with the wind direction in the casing. In this embodiment, the heat dissipation fins 2 are flexibly arranged according to the motor arrangement direction and the wind direction. The direction of the heat dissipation fins 2 is selected to be circumferential, which is consistent with the wind direction in the casing, and the air cooling effect is good.
[0038] Depend on Figure 3 It can be seen that the size of the heat dissipation fin 2 can be adjusted according to the installation in the vehicle, and the fin height can be partially reduced to form a Figure 3 The local fins 13 in the middle; or the fins are removed in the airtight area.
[0039] A sealing groove 7 is provided on the circumferential side 5 of the second annular inner wall, the rear axle or the reducer.
[0040] The sealing groove 7 on the circumferential side 5 of the second annular inner wall is arranged at a position cooperating with the rear axle or the reducer, and the sealing of the external interface is achieved by an O-ring or other sealing means, thereby improving the sealing effect.
[0041] like Figure 2 As shown, a base 8 is provided at the bottom of the front cover 3, and the base 8 is arranged around the second annular inner wall 5. The shape of the base 8 is adapted to the rear axle or the reducer. In this embodiment, the shape of the base 8 is triangular. An external interface is designed at the bottom of the motor, and a threaded hole is installed on the rear axle or the reducer, which is fixed by bolt connection.
[0042] In this embodiment, the casing structure is high-pressure casting, so the complexity of the structure can be increased, and more functions can be designed on the casing structure, such as the breathing valve 10 installation hole at the bottom, the process positioning hole at the bottom, etc.
[0043] Specifically, the base 8 includes a shell, a receiving hole is provided in the center of the shell, the second annular inner wall 5 is provided in the receiving hole, and a reinforcing rib 9 is provided between the receiving hole and the shell, and the design of the reinforcing rib 9 enhances the overall strength. The base 8 is provided with a breather valve 10 mounting hole and a first threaded hole 11, and a breather valve 10 is installed in the breather valve 10 mounting hole.
[0044] The housing body 1 is also provided with a marking surface 14 and a lifting lug 15 . The marking surface 14 is used for marking, and the lifting lug 15 can facilitate the installation of the motor on the vehicle.
[0045] A No. 2 threaded hole 12 is provided on the top of the housing body 1, and a rear end cover is threadedly connected to the No. 2 threaded hole 12.
[0046] Working principle:
[0047] The direction of the heat dissipation fins 2 can be flexibly arranged according to the wind direction, which can be circumferential or axial, and the position of the local fins 13 can be flexibly arranged; the casing body 1 is threadedly connected to the rear axle or the reducer through the No. 1 threaded hole 11 and the threaded hole on the rear axle or the reducer; the rear end cover is threadedly connected to the casing body 1 through the No. 2 threaded hole 12 to complete the assembly.
[0048] When the powertrain is in a high temperature environment or is running under load, the heat will cause thermal expansion of the internal gas, resulting in an internal and external pressure difference. At this time, the designed breathing valve 10 will be used to balance the internal and external pressure difference; at the same time, the breathing valve 10 can also ensure that condensed liquid or mist water vapor generated by the outside cannot pass through when the temperature drops suddenly, thereby satisfying the waterproof and breathable functions.
[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0050] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An air-cooled motor casing structure, characterized in that: It includes a casing body, heat dissipation fins and a front end cover, wherein the casing body, heat dissipation fins and the front end cover are an integrally formed structure, and the front end cover is arranged at the bottom of the casing body; a No. 1 annular inner wall is arranged at the central position of the top of the front end cover, and the No. 1 annular inner wall is arranged to protrude inwardly; a No. 2 annular inner wall is arranged at the central position of the bottom of the front end cover, and the No. 2 annular inner wall is arranged to protrude outwardly; the No. 1 annular inner wall and the No. 2 annular inner wall are connected to form a bearing chamber.
2. The air-cooled motor housing structure according to claim 1, characterized in that: The heat dissipation fins are arranged in an axial or radial direction, which is consistent with the wind direction in the casing.
3. The air-cooled motor housing structure according to claim 1, characterized in that: Sealing grooves are arranged on the circumferential side of the second annular inner wall, the rear axle or the reducer.
4. The air-cooled motor housing structure according to claim 1, characterized in that: A base is arranged at the bottom of the front end cover, and the base is arranged around the circumference of the second annular inner wall.
5. The air-cooled motor housing structure according to claim 4, characterized in that: The base comprises a shell, a receiving hole is arranged at the center of the shell, the second annular inner wall is arranged in the receiving hole, and a reinforcing rib is arranged between the receiving hole and the shell.
6. The air-cooled motor housing structure according to claim 4, characterized in that: The base is provided with a breathing valve mounting hole and a No. 1 threaded hole, and a breathing valve is mounted in the breathing valve mounting hole.
7. The air-cooled motor housing structure according to claim 1, characterized in that: A No. 2 threaded hole is arranged on the top of the casing body, and a rear end cover is threadedly connected to the No. 2 threaded hole.
8. The air-cooled motor housing structure according to claim 1, characterized in that: The casing body is a barrel-shaped casing structure, and a marking surface and a lifting lug are also provided on the casing body.
9. The air-cooled motor housing structure according to claim 1, characterized in that: The housing body, the heat dissipation fins and the front end cover are integrally formed by high pressure casting.
10. The air-cooled motor housing structure according to claim 4, characterized in that: The shape of the base is adapted to the rear axle or the reducer.