Motor housing
By setting up a section of the ring-shaped runner inside the motor housing, the existing water-cooled motor housing connecting structure has solved the problem of large space and high production costs, and the effect of efficient heat dissipation and reducing production costs is achieved.
Patent Information
- Application Number
- CN202422101030.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The pipe connection structure of the existing water-cooled motor housing occupies a lot of installation space, and multiple runners need to be connected to multiple water pipes, resulting in high production costs and is not conducive to large-scale production.
A motor housing is designed, with an open-loop flow channel segmented around the motor housing, and the water inlet and outlet interfaces at both ends of the flow channel are arranged at the end surface of the pipe, and the cooling water fully contacts the motor housing through the flow channel to achieve efficient heat dissipation.
It reduces the space occupied by the takeover structure, reduces production costs, is suitable for large-scale production, and achieves a more uniform and efficient heat dissipation effect through global heat dissipation.
Smart Images
Figure CN222966806U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of motors, and particularly to a motor housing. Background Art
[0002] With the rapid development of domestic semiconductors and high-end machine tool equipment, the demand for direct drive motors with high precision and high power is increasing. Such motors require large torque, high positioning accuracy, and higher requirements for motor heat dissipation. Therefore, the outer shells of such motors are generally equipped with water-cooling structures. In the water-cooling housing of existing water-cooled motors, generally multiple S-shaped or Z-shaped flow channels are provided, and the water inlet and outlet at both ends of the flow channels are respectively arranged on two end faces of the water-cooling housing. When connecting water pipes, it is necessary to connect the pipes from both end faces of the water-cooling housing respectively, resulting in the pipe connection structure occupying a relatively large installation space; moreover, multiple flow channels require connecting multiple water pipes, and the production cost is also relatively high, which is not conducive to mass production. Summary of the Utility Model
[0003] The purpose of the embodiments of the present utility model is to provide a motor housing, which can solve the above problems existing in the prior art.
[0004] To achieve the above object, the present application adopts the following technical solutions:
[0005] A motor housing has a cylindrical structure, and one end thereof is a pipe connection end face; a flow channel is provided inside the motor housing, and both ends of the flow channel are respectively a water inlet interface and a water outlet interface, and the water inlet interface and the water outlet interface are both arranged on the pipe connection end face; the flow channel includes multiple annular flow channel segments arranged around the motor housing at intervals along the axial direction of the motor housing; each flow channel segment respectively has a water inlet port and a water outlet port, the water inlet port of the flow channel segment closest to the pipe connection end face is communicated with the water inlet interface, the water outlet port of the flow channel segment farthest from the pipe connection end face is communicated with the water outlet interface, and in the direction from the flow channel segment closest to the pipe connection end face to the flow channel segment farthest from it, for any two adjacent flow channel segments, the water outlet port of the previous flow channel segment is communicated with the water inlet port of the next flow channel segment.
[0006] Optionally, the flow channel further includes a first connection segment and a second connection segment, the first connection segment connects any two adjacent flow channel segments; one end of the second connection segment is connected to the water outlet port of the flow channel segment farthest from the pipe connection end face, and the other end is connected to the water outlet interface; a certain interval is maintained between any two adjacent first connection segments, and the second connection segment passes through the area between multiple first connection segments.
[0007] Optionally, the first transition segment and the second transition segment are both arranged to be inclined in the same direction relative to the axis of the motor housing.
[0008] Optionally, a plurality of the flow channel segments are connected end to end to form a spiral shape, and the flow channel also includes a second transition segment, one end of the second transition segment is connected to the water outlet port of the flow channel segment farthest from the end face of the connecting pipe, and the other end is connected to the water outlet interface, and the second transition segment and the flow channel segment are staggered in the radial direction of the motor housing.
[0009] Optionally, the outer wall surface of the motor housing is also provided with an extended water inlet interface and an extended water outlet interface, and the water inlet port of the flow channel segment closest to the connecting pipe end face is connected to the extended water inlet interface, and the water outlet port of the flow channel segment farthest from the connecting pipe end face is connected to the extended water outlet interface.
[0010] Optionally, the extended water inlet interface and the extended water outlet interface are arranged on the outer wall surface of the motor housing close to the end surface of the connecting pipe.
[0011] Optionally, a plurality of reinforcing ribs are distributed circumferentially on the outer wall of the motor housing, and the reinforcing ribs extend along the axial direction of the motor housing.
[0012] Optionally, a positioning pin hole is provided on the inner wall of the motor housing.
[0013] Optionally, the motor housing is an integral casting structure.
[0014] Optionally, the outer wall of the motor housing is provided with a mold opening process boss.
[0015] The beneficial effects of the present application are as follows: the present utility model provides a motor housing, and a flow channel for water flow is arranged inside the motor housing, so that the cooling water can fully contact the motor housing through the flow channel to achieve efficient heat dissipation. The water inlet interface and the water outlet interface at both ends of the flow channel are simultaneously arranged on the end face of the pipe located at one end of the motor housing, so when connecting with the external cooling water pipe, it is only necessary to connect the pipe on the side of the pipe end face, so the pipe structure of this solution will only occupy the installation space at one end of the motor housing, compared with the traditional method of connecting pipes at both ends, the installation space occupied by the pipe structure of this solution is smaller when applied; and the present solution sets a through flow channel in the motor housing, and only one water inlet pipe and one water outlet pipe need to be connected when connecting, which realizes the simplification of the structure, reduces the production cost, and is conducive to mass production. In addition, the flow channel of the present scheme is arranged to include multiple open-loop flow channel segments arranged around the motor housing, adjacent flow channel segments are connected end to end, and the flow channel segment closest to the end face of the connecting pipe is connected to the water inlet interface, and the flow channel segment farthest from the end face of the connecting pipe is connected to the water outlet interface, thereby realizing a flow channel that runs through the entire motor housing, achieving global heat dissipation of the motor housing, and obtaining a more uniform and efficient heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present application is further described in detail below based on the drawings and embodiments.
[0017] Figure 1 This is a structural schematic diagram of a motor housing according to an embodiment of the present application from one perspective;
[0018] Figure 2 This is a schematic structural diagram of the motor housing from another perspective according to an embodiment of the present application;
[0019] Figure 3 A cross-sectional view of the motor housing according to an embodiment of the present application;
[0020] Figure 4 A schematic diagram of the structure of one embodiment of the flow channel described in the embodiments of the present application;
[0021] Figure 5 This is a schematic structural diagram of another embodiment of the flow channel described in the embodiment of the present application.
[0022] In the figure:
[0023] 10. Motor housing; 1. Flow channel; 11. Flow channel segment; 12. First transfer segment; 13. Second transfer segment; 14. Water inlet interface; 15. Water outlet interface; 16. Extended water inlet interface; 17. Extended water outlet interface; 2. Pipe end face; 3. Reinforced ribs; 4. Mold process boss; 5. Positioning pin hole; 6. Limiting step surface. DETAILED DESCRIPTION
[0024] To make the technical problems solved by this application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of this application will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.
[0025] In the description of this application, unless otherwise clearly specified and defined, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.
[0026] In this application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.
[0027] With the rapid development of domestic semiconductors and high-end machine tool equipment, the demand for direct drive motors with high precision and high power is increasing. Such motors require large torque, high positioning accuracy, and higher requirements for motor heat dissipation. Therefore, the outer shells of such motors are generally equipped with water-cooling structures. In the water-cooling shell of the existing water-cooled motors, generally multiple S-shaped or Z-shaped flow channels are provided, and the water inlets and outlets at both ends of the flow channels are respectively arranged on two end faces of the water-cooling shell. When connecting the water pipes, it is necessary to connect the pipes from both end faces of the water-cooling shell respectively, resulting in the pipe connection structure occupying a relatively large installation space; moreover, multiple flow channels require connecting multiple water pipes, and the production cost is also relatively high, which is not conducive to mass production.
[0028] To overcome the above technical problems, refer to Figures 1-5, this embodiment provides a motor housing 10, which is in a cylindrical structure, and one end thereof is a connection pipe end face 2; a flow channel 1 is arranged inside the motor housing 10, and two ends of the flow channel 1 are an inlet interface 14 and an outlet interface 15 respectively, and the inlet interface 14 and the outlet interface 15 are both arranged on the connection pipe end face 2; the flow channel 1 includes a plurality of open-ring-shaped flow channel segments 11 arranged around the motor housing 10, and the plurality of flow channel segments 11 are arranged at intervals along the axial direction of the motor housing 10; each flow channel segment 11 has an inlet port and an outlet port respectively, the inlet port of the flow channel segment 11 closest to the connection pipe end face 2 is communicated with the inlet interface 14, the outlet port of the flow channel segment 11 farthest from the connection pipe end face 2 is communicated with the outlet interface 15, and in the direction from the flow channel segment 11 closest to the connection pipe end face 2 to the flow channel segment 11 farthest away, among any two adjacent flow channel segments 11, the outlet port of the previous flow channel segment 11 is communicated with the inlet port of the next flow channel segment 11.
[0029] Specifically, the motor housing 10 of this embodiment is in a straight cylindrical structure, and its outer shape can be a circular cylinder, a polygonal cylinder or other shapes, and it has a cylindrical through cavity inside, which can accommodate necessary components such as an iron core and a coil in the motor. During application, after the internal structure is installed inside the motor housing 10, front and rear covers are respectively installed at both ends of the motor housing 10 to achieve sealing. The connection pipe end face 2 can be the side of the motor housing 10 connecting the front cover or the side connecting the rear cover. For the convenience of connecting water pipes, during implementation, holes corresponding to the inlet interface 14 and the outlet interface 15 need to be set on the corresponding cover, so that the inlet pipe and the outlet pipe can be smoothly connected to the inlet interface 14 and the outlet interface 15.
[0030] The flow channel 1 arranged inside the motor housing 10 of this embodiment is through from beginning to end. It is provided with a plurality of open-ring-shaped flow channel segments 11, and the adjacent flow channels 1 are connected end to end, so that the cooling water can only flow unidirectionally along the extending direction of the flow channel 1; the plurality of open-ring-shaped flow segments are arranged around the motor housing 10, realizing all-round heat dissipation of the motor housing 10 in the circumferential direction and the axial direction.
[0031] During specific implementation, the number, size and interval of the flow channel segments 11 can be optimized according to the specific size and power requirements of the motor. For example, for a motor with a larger power, the number of the flow channel segments 11 can be increased or its size can be increased to improve the heat dissipation capacity.
[0032] In summary, for the motor housing 10 based on this embodiment, a water flow channel 1 for water passage is provided inside the motor housing 10, so that the cooling water can fully contact the motor housing 10 through the flow channel 1 to achieve efficient heat dissipation. The water inlet interface 14 and the water outlet interface 15 at both ends of the flow channel 1 are both arranged on the connection pipe end face 2 at one end of the motor housing 10. Therefore, when connecting to an external cooling water pipe, only the connection pipe needs to be made on the side of the connection pipe end face 2. Therefore, the connection pipe structure of this solution only occupies the installation space at one end of the motor housing 10. Compared with the traditional method of connecting pipes at both ends respectively, the connection pipe structure of this solution occupies less installation space during application; moreover, this solution provides a through flow channel 1 in the motor housing 10. When connecting pipes, only one water inlet pipe and one water outlet pipe need to be connected, which simplifies the structure, reduces the production cost, and is conducive to mass production. In addition, the flow channel 1 of this solution is arranged to include a plurality of flow channel segments 11 arranged in an open loop around the motor housing 10. Adjacent flow channel segments 11 are connected end to end, and the flow channel segment 11 closest to the connection pipe end face 2 is connected to the water inlet interface 14, and the flow channel segment 11 farthest from the connection pipe end face 2 is connected to the water outlet interface 15. Thus, a through-flow channel 1 is arranged to surround the entire motor housing 10, achieving global heat dissipation of the motor housing 10 and obtaining a more uniform and efficient heat dissipation effect.
[0033] In one embodiment, referring to Figure 4 , the flow channel 1 further includes a first transfer segment 12 and a second transfer segment 13. The first transfer segment 12 connects any two adjacent flow channel segments 11; one end of the second transfer segment 13 is connected to the water outlet port of the flow channel segment 11 farthest from the connection pipe end face 2, and the other end is connected to the water outlet interface 15; a certain interval is maintained between any two adjacent first transfer segments 12, and the second transfer segment 13 passes through the area between multiple first transfer segments 12.
[0034] It should be noted that for the convenience of expression, Figure 4 shown in this embodiment is one form of the flow channel 1, and its internal structure is a virtual structure. During use, water flows along the direction of the flow channel 1 shown in the figure.
[0035] Specifically, in this embodiment, the inner fillet of each flow channel segment 11 is less than 360° to achieve an open-loop design. During specific implementation, the size of the inner fillet of the flow channel segment 11 with a suitable size can be set according to the widths of the first transfer segment 12 and the second transfer segment 13, as long as the first transfer segment 12 and the second transfer segment 13 can be separated.
[0036] Taking Figure 4Taking the direction shown as an example, the central axis (i.e., the axis of the motor housing 10) around the flow channel 1 extends in the up-down direction, the water outlet interface 15 is located at the lower side of the motor housing 10, and the second adapter segment 13 extends from top to bottom; the first adapter segment 12 is respectively provided on the left and right sides of the second adapter segment 13 to connect the flow channel segment 11. In this structure, the flow channel segment 11, the first adapter segment 12, and the second adapter segment 13 are arranged on the same circumferential surface, that is, the segments do not need to avoid each other in the radial direction, so the width of each segment can be maximized in the radial direction, and the flow area of the flow channel 1 is maximized, so that higher heat dissipation efficiency is obtained when in use.
[0037] In one embodiment, the first transition segment 12 and the second transition segment 13 are both arranged to be inclined in the same direction relative to the axis of the motor housing 10 .
[0038] Reference Figure 4 , the first transition segment 12 is tilted, and the angle between the two flow channel segments 11 connected at both ends and one of the flow channel segments 11 will increase. Increasing the angle can reduce the pressure drop when the water flows through the corner; the angle between the other flow channel segment 11 will decrease, but the inner angle space of the angle increases, so the flow area of the water flow at the angle is increased, which can also achieve the effect of reducing the pressure drop when the water flows through the corner. Similarly, the second transition segment 13 is tilted, which can increase the angle between the flow channel segments 11 connected to it, and achieve the effect of reducing the pressure drop when the water flows through the corner. Therefore, the structure of this scheme can achieve the effect of reducing the pressure loss of cooling water flowing in the flow channel 1 to a certain extent.
[0039] In another embodiment, referring to Figure 5 , multiple flow channel segments 11 are connected end to end to form a spiral shape, and the flow channel 1 also includes a second transition segment 13, one end of the second transition segment 13 is connected to the water outlet port of the flow channel segment 11 farthest from the connecting pipe end face 2, and the other end is connected to the water outlet interface 15, and the second transition segment 13 and the flow channel segment 11 are staggered in the radial direction of the motor housing 10.
[0040] Specifically, each flow channel segment 11 in this embodiment is a thread with a full pitch, and the water outlet ports and water inlet ports at both ends thereof are staggered in a direction parallel to the axis of the motor housing 10 to realize an open loop, and the water outlet ports and water inlet ports of two adjacent flow channel segments 11 are directly connected. In this embodiment, the second adapter segment 13 and the flow channel segment 11 need to be staggered in the radial direction, so that the cooling water can enter and exit from the water inlet interface 14 and the water outlet interface 15 located on the same end face.
[0041] In one embodiment, referring to Figure 1 and Figure 4The outer wall surface of the motor housing 10 is also provided with an extended water inlet interface 16 and an extended water outlet interface 17. The water inlet port of the flow channel segment 11 closest to the connecting pipe end face 2 is connected to the extended water inlet interface 16, and the water outlet port of the flow channel segment 11 farthest from the connecting pipe end face 2 is connected to the extended water outlet interface 17.
[0042] Specifically, avoiding setting the extended water inlet interface 16 and the extended water outlet interface 17 on the outside of the motor housing 10 can provide more options for the connection position, which is convenient for users to reasonably adjust the connection position according to actual conditions. Specifically, when the water inlet interface 14 and the water outlet interface 15 are selected for connection, the extended water inlet interface 16 and the extended water outlet interface 17 need to be blocked with a sealing plug; conversely, when the extended water inlet interface 16 and the extended water outlet interface 17 are used for connection, the water inlet interface 14 and the water outlet interface 15 need to be blocked with a sealing plug.
[0043] In one embodiment, the extended water inlet interface 16 and the extended water outlet interface 17 are disposed on the outer wall of the motor housing 10 near the connecting pipe end surface 2 .
[0044] The extended water inlet interface 16 and the extended water outlet interface 17 are arranged near the pipe end surface 2 , so as to be directly connected with both ends of the flow channel 1 in the motor housing 10 .
[0045] In one embodiment, a plurality of reinforcing ribs 3 are distributed circumferentially on the outer wall of the motor housing 10 , and the reinforcing ribs 3 extend along the axial direction of the motor housing 10 .
[0046] The outer wall of the motor housing 10 is provided with a reinforcing rib 3, which can effectively enhance the compression and bending resistance of the motor housing 10 and improve the durability of the motor housing 10. In addition, based on the thickened structure at the reinforcing rib, a threaded hole for locking the cover plate can be provided at the reinforcing rib to avoid the problem of the threaded hole and the flow channel 1 being pierced.
[0047] In one embodiment, a positioning pin hole 5 is provided on the inner wall of the motor housing 10 .
[0048] A positioning pin hole 5 is provided on the inner wall of the motor housing 10. When in use, the positioning pin can be used to lock the fixed iron core installed inside to keep the fixed iron core stable and avoid the fixed iron core rotating to cause the motor to fail.
[0049] In one embodiment, an inwardly protruding limiting step surface 6 is further provided at one end of the motor housing 10. The limiting step surface 6 can provide a limit for the installation of the internal fixed iron core and effectively maintain the stability of the fixed iron core after installation.
[0050] Regarding the molding of the motor housing 10 of this embodiment, in one embodiment, the motor housing 10 is an integral casting structure.
[0051] The motor housing 10 directly adopts an integral casting structure, which has the advantages of fast molding, low processing difficulty, and low processing cost. Importantly, the integral casting structure can provide good internal sealing performance, enabling water flow to only enter from the water inlet ports of each flow channel segment 11, and avoiding the problem of water cross-flow between the flow channels 1.
[0052] In one embodiment, a mold opening process boss 4 is provided on the outer wall of the motor housing 10.
[0053] Specifically, when manufacturing the motor housing 10 using the casting process, a sand core corresponding to the shape of the flow channel 1 needs to be pre-made, and then molten iron is poured to obtain the motor housing 10. By providing a mold opening process boss 4 on the outer wall of the motor housing 10, and using the thickening in the area of the mold opening process boss 4, holes can be drilled at the mold opening process boss 4 to facilitate the cleaning of the internal sand core. After the sand is cleaned out, the drilled holes can be sealed. Since the material at the mold opening process boss 4 is relatively thick, it can ensure that the material at the drilled holes retains sufficient strength, and at the same time, the material for sealing the holes later can be more reliably combined with the motor housing 10, improving the reliability of the motor housing 10.
[0054] In another embodiment, the motor housing 10 can adopt a double-layer shell structure, which includes a nested inner shell and outer shell. Grooves are provided on the inner wall of the outer shell. After the outer shell is sleeved outside the inner shell, the groove areas form the flow channel 1 structure. This structure can be directly processed using extruded profiles.
[0055] In the description herein, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.
[0056] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
[0057] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0058] The technical principles of the present application have been described above in connection with specific embodiments. These descriptions are only for explaining the principles of the present application and should not be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present application without creative efforts, and these embodiments will fall within the scope of protection of the present application.
Claims
1. A motor housing, characterized in that: The motor housing (10) is provided with a flow channel (1) inside, and the two ends of the flow channel (1) are respectively a water inlet interface (14) and a water outlet interface (15), and the water inlet interface (14) and the water outlet interface (15) are simultaneously provided on the pipe end surface (2); the flow channel (1) comprises a plurality of open-loop flow channel segments (11) arranged around the motor housing (10), and the plurality of flow channel segments (11) are arranged at intervals along the axial direction of the motor housing (10); each of the flow channel segments (11) has a water inlet interface (14) and a water outlet interface (15). The water inlet port of the flow channel segment (11) closest to the connecting pipe end face (2) is connected to the water inlet port (14), and the water outlet port of the flow channel segment (11) farthest from the connecting pipe end face (2) is connected to the water outlet port (15). From the direction of the flow channel segment (11) closest to the connecting pipe end face (2) to the direction farthest from the flow channel segment (11), in any two adjacent flow channel segments (11), the water outlet port of the previous flow channel segment (11) is connected to the water inlet port of the next flow channel segment (11).
2. The motor housing according to claim 1, characterized in that: The flow channel (1) further comprises a first transition segment (12) and a second transition segment (13); the first transition segment (12) is connected to any two adjacent flow channel segments (11); one end of the second transition segment (13) is connected to the water outlet port of the flow channel segment (11) farthest from the pipe end face (2), and the other end is connected to the water outlet interface (15); a certain interval is maintained between any two adjacent first transition segments (12), and the second transition segment (13) passes through the area between a plurality of the first transition segments (12).
3. The motor housing according to claim 2, characterized in that: The first transition section (12) and the second transition section (13) are both arranged to be inclined in the same direction relative to the axis of the motor housing (10).
4. The motor housing according to claim 1, characterized in that: A plurality of the flow channel segments (11) are connected end to end to form a spiral shape, and the flow channel (1) further comprises a second transition segment (13), one end of the second transition segment (13) is connected to the water outlet port of the flow channel segment (11) farthest from the pipe end face (2), and the other end is connected to the water outlet interface (15), and the second transition segment (13) and the flow channel segment (11) are staggered in the radial direction of the motor housing (10).
5. The motor housing according to claim 1, characterized in that: The outer wall surface of the motor housing (10) is also provided with an extended water inlet interface (16) and an extended water outlet interface (17); the water inlet port of the flow channel segment (11) closest to the connecting pipe end surface (2) is connected to the extended water inlet interface (16), and the water outlet port of the flow channel segment (11) farthest from the connecting pipe end surface (2) is connected to the extended water outlet interface (17).
6. The motor housing according to claim 5, characterized in that: The extended water inlet interface (16) and the extended water outlet interface (17) are arranged on the outer wall surface of the motor housing (10) close to the connecting pipe end surface (2).
7. The motor housing according to claim 1, characterized in that: A plurality of reinforcing ribs (3) are distributed circumferentially on the outer wall of the motor housing (10), and the reinforcing ribs (3) extend along the axial direction of the motor housing (10).
8. The motor housing according to claim 1, characterized in that: The inner wall of the motor housing (10) is provided with a positioning pin hole (5).
9. The motor housing according to claim 1, characterized in that: The motor housing (10) is an integral casting structure.
10. The motor housing according to claim 9, characterized in that: The outer wall of the motor housing (10) is provided with a mold opening process boss (4).