Shell mounting assembly and motor device

Abstract

The invention provides a shell mounting assembly and a motor device, the shell mounting assembly comprises a shell assembly and a base assembly, the shell assembly comprises a shell main body and a threaded piece embedded in the shell main body, the threaded piece is provided with an internal threaded hole, the shell main body is a die casting, and the shell main body is provided with an external threaded hole; the wear resistance and the hardness of the threaded piece are higher than those of the case main body; the base assembly comprises a base main body and a limiting piece embedded in the base main body, the base main body is a die casting, the limiting piece is provided with a through hole, and the wear resistance and hardness of the limiting piece are both higher than those of the base main body; when the machine shell assembly and the base assembly are combined together, the through holes correspond to the inner threaded holes, screws are inserted into the inner threaded holes, and the materials of the screws are the same as the materials of the threaded pieces, so that the technical problem that in the prior art, the stability of connection between a machine shell and a base is poor can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a housing mounting assembly and a motor device. Background Art

[0002] At present, industrial motors are designed with different base structures according to the center height to meet installation requirements. The structural parts are designed to be lightweight according to the actual application scenarios, and cast aluminum structures are used to meet the load requirements. The whole machine structure can be die-casted for the casing and the base separately, and then assembled twice. In other words, the casing and the base are die-cast separately, and then assembled twice. The casing and the base are die-cast separately, and then assembled twice. This method can not only increase the contact area, improve the support stability and disperse the support force, but also further reduce mechanical resonance, and reduce the hidden dangers of structural failure and increased vibration and noise caused by resonance. At the same time, split die-casting is easier to implement in terms of structural design and mold realization. Fig.14 and Fig.15 As shown, in the prior art, the casing and the base are connected together by screws after assembly. Since the material of the screws is different from that of the cast aluminum parts, during the operation of the motor, due to vibration and other reasons, the connection between the screws and the casing may become loose, resulting in abnormalities such as reduced stability of the connection between the casing and the base.

[0003] How to improve the stability of the connection between the housing and the base is a technical problem that urgently needs to be solved. Summary of the invention

[0004] The present invention provides a shell mounting assembly and a motor device, which can solve the technical problem of poor connection stability between a shell and a base in the prior art.

[0005] On the one hand, the present invention provides a shell mounting assembly, including a casing assembly and a base assembly, the casing assembly including a casing body and a threaded part embedded in the casing body, the threaded part is provided with an internal threaded hole, the casing body is a die-casting, and the wear resistance and hardness of the threaded part are higher than those of the casing body; the base assembly includes a base body and a limiting part embedded in the base body, the base body is a die-casting, the limiting part has a through hole, and the wear resistance and hardness of the limiting part are higher than those of the base body; when the casing assembly and the base assembly are combined together, the through hole corresponds to the internal threaded hole, screws are inserted into the through hole and the internal threaded hole, and the material of the screw is the same as that of the threaded part.

[0006] In some embodiments, the outer wall of the threaded member is provided with limiting ribs.

[0007] In some embodiments, the limiting rib includes a first external spiral rib, and the rotation direction of the first external spiral rib is opposite to the rotation direction of the thread of the internal threaded hole.

[0008] In some embodiments, the limiting rib includes a second external spiral rib, and the rotation direction of the second external spiral rib is the same as the rotation direction of the thread of the internal threaded hole.

[0009] In some embodiments, the limiting ribs include a plurality of inclined ribs, and the plurality of inclined ribs extend along the circumferential direction and the axial direction of the outer surface of the threaded member at the same time.

[0010] In some embodiments, the limiting rib includes an annular reinforcing rib, and the annular reinforcing rib surrounds the threaded member;

[0011] and / or,

[0012] The outer wall of the threaded component is provided with axial reinforcement ribs, and the axial reinforcement ribs extend along the axial direction of the threaded component.

[0013] In some embodiments, an outer wall of the limiting member is provided with an annular groove, and the annular groove surrounds the limiting member.

[0014] In some embodiments, the housing body is provided with a first surface for pressing against the base body, and the threaded member includes a limiting end extending out of the first surface; the base body is provided with a second surface for pressing against the housing body;

[0015] The limiting member is provided with an annular groove, and when the first surface and the second surface are pressed against each other, the limiting end is inserted into the annular groove.

[0016] In some embodiments, a gasket is disposed between the first surface and the second surface, and the material of the gasket is the same as the material of the threaded member, or the material of the gasket is the same as the material of the limiting member.

[0017] In some embodiments, one of the first surface and the second surface is provided with a first protruding structure, and the other is provided with a first concave structure, and the first protruding structure is adapted to fit with the first concave structure.

[0018] In some embodiments, the outer wall surface of the threaded member is provided with a second protruding structure and / or a second concave structure, and the outer wall surface of the limiting member is provided with a third protruding structure and / or a third concave structure.

[0019] The present invention further provides a motor device, comprising a stator and the housing mounting assembly, wherein the stator is arranged in the housing body.

[0020] The present invention realizes connecting the casing body and the base body together by arranging a threaded part in the casing body and a limiting part in the base body, and passing a screw through a through hole on the limiting part and threadedly connecting with the threaded part. The wear resistance and hardness of the threaded part and the limiting part are relatively high, which makes the connection between the casing body and the base body higher in precision and better in stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 is a schematic diagram of a motor according to an embodiment of the present invention provided with a wire screw sleeve;

[0023] Figure 2 The embodiment of the present invention Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 2 is a schematic diagram of the structure of a wire thread sleeve according to an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a motor according to an embodiment of the present invention provided with a threaded member;

[0026] Figure 5 The embodiment of the present invention Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 is an oblique view of a threaded member according to an embodiment of the present invention;

[0028] Figure 7 is a schematic diagram of an embodiment of the present invention in which the outer wall of the threaded member is provided with inclined ribs;

[0029] Figure 8 is an axial schematic diagram of a threaded member according to an embodiment of the present invention when an axial reinforcing rib is provided on the outer wall of the threaded member;

[0030] Fig. 9 is a radial schematic diagram of a threaded member according to an embodiment of the present invention when an axial reinforcing rib is provided on the outer wall thereof;

[0031] Fig.10 is an oblique view of a stopper according to an embodiment of the present invention;

[0032] Fig.11 is a radial partial cross-sectional view of a stopper according to an embodiment of the present invention;

[0033] Fig.12 is a schematic diagram of an embodiment of the present invention in which an annular protrusion is provided on the outer wall of the position limiting member;

[0034] Fig.13 is a schematic diagram of an embodiment of the present invention in which a first protruding structure is arranged on the first plane and a first concave structure is arranged on the second plane;

[0035] Fig.14 It is an exploded view of the motor body and base of the prior art;

[0036] Fig.15 It is a schematic diagram of the motor body and the base in the prior art when they are matched together;

[0037] The accompanying drawings are marked as follows:

[0038] 1. Casing assembly; 101. Casing body; 1011. First surface; 2. Base assembly; 201. Base body; 2011. Second surface; 3. Threaded member; 301. First outer spiral rib; 302. Internal threaded hole; 303. Axial reinforcing rib; 304. Inclined rib; 305. Limiting end; 4. Limiting member; 401. Annular groove; 402. Annular groove; 403. Annular rib; 5. Screw; 6. Wire screw sleeve; 701. First protruding structure; 702. Second protruding structure. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] See also Figure 1-13 As shown, the present invention provides a shell mounting assembly, including a casing assembly 1 and a base assembly 2, the casing assembly 1 including a casing body 101 and a threaded member 3 embedded in the casing body 101, the threaded member 3 is provided with an internal threaded hole 302, the casing body 101 is a die-casting, and the wear resistance and hardness of the threaded member 3 are higher than those of the casing body 101; the base assembly 2 includes a base body 201 and a limit member 4 embedded in the base body 201, the base body 201 is a die-casting, the limit member 4 has a through hole, and the wear resistance and hardness of the limit member 4 are higher than those of the base body 201; when the casing assembly 1 and the base assembly 2 are combined together, the through hole corresponds to the internal threaded hole 302, and screws 5 are inserted into the through hole and the internal threaded hole 302, and the material of the screw 5 is the same as that of the threaded member 3.

[0044] By embedding the threaded member 3 in the housing body 101 and setting the stopper 4 on the base body 201, the wear resistance and hardness of the threaded member 3 and the stopper 4 are higher than those of the die-cast material. When the housing assembly 1 and the base assembly 2 are combined together, the screw 5 is inserted into the threaded hole. The material of the screw 5 is the same as that of the threaded member 3, so that the firmness of the connection between the screw 5 and the threaded member 3 is improved.

[0045] Since the wear resistance and hardness of the threaded part 3 are higher than those of the casing body 101, the accuracy of the internal threaded hole 302 set on the threaded part 3 must also be greater than the threaded structure set on the die-casting during processing; this makes the accuracy of the thread itself higher and improves the accuracy of the threaded connection.

[0046] When the casing body 101 is die-cast, the threaded member 3 is set at a specific position in the mold, and then the die-casting operation is carried out; similarly, when the base is die-cast, the limiter 4 is set at a specific position in the mold, and then the die-casting operation is carried out. The threaded member 3 itself has an internal thread, and there is no need to process the thread after the die-casting is completed, which reduces the processing of the threaded surface of the casting. Since the contact surface accuracy between the threaded member 3 and the limiter 4 is high, the contact surface accuracy between the casing body 101 and the base body 201 is low. The size of the casing component 1 and the base component 2 is mainly determined by the casing body 101 and the base body 201, and the matching accuracy is determined by the threaded member 3 and the limiter 4. This eliminates the need to reprocess the casing body 101 and the base body 201 to improve the accuracy, reduces the matching surface processing steps between the two die-castings, and further reduces the positioning deviation caused by multiple processing of the product, and reduces the processing cost.

[0047] The axial direction in the present application refers to the axial direction of the threaded component 3 , the circumferential direction refers to the circumferential direction of the threaded component 3 , and the radial direction refers to the radial direction of the threaded component 3 .

[0048] Preferably, Figure 3 , Figure 6-Figure 9 As shown, the outer wall of the threaded member 3 is provided with limiting ribs.

[0049] By arranging limiting ribs on the outer wall of the screw member 3, the firmness of the screw member 3 in the housing body 101 is improved, and the stability of the connection between the housing body 101 and the base is improved.

[0050] During the rotation of the screw 5 inserted into the threaded member 3, a circumferential torsional force is exerted on the threaded member 3. When the screw 5 is fully rotated, a large axial tensile force is exerted on the threaded member 3. By providing the limiting ribs, the threaded member 3 is prevented from rotating in the housing body 101, and the threaded member 3 is prevented from axial displacement under the action of the tensile force.

[0051] Preferably, the limiting rib comprises a first external spiral rib 301 , and the rotation direction of the first external spiral rib 301 is opposite to the rotation direction of the thread of the internal threaded hole 302 .

[0052] The rotation direction of the first external spiral rib 301 is opposite to that of the internal threaded hole 302. This means that when the screw 5 is inserted into the internal threaded hole 302 and rotated, the threaded member 3 will have a tendency to rotate in the opposite direction to the rotation direction of the screw 5 under the action of the first external threaded rib 301, which is beneficial to the rotation and tightening between the screw 5 and the threaded member 3.

[0053] Preferably, Figure 3 As shown, the limiting rib includes a second outer spiral rib, and the rotation direction of the second outer spiral rib is the same as the rotation direction of the thread of the internal threaded hole 302.

[0054] The rotation direction of the second external spiral rib is the same as that of the internal threaded hole 302. When the screw 5 rotates in the internal threaded hole 302, the circumferential force generated by the screw 5 on the threaded member 3 will cause the threaded member 3 to move toward the inside of the housing body 101. In this way, the screw 5 will not cause the threaded member 3 to rotate and fall off from the housing body 101 during rotation. The second external spiral rib has an axial and circumferential limiting effect on the threaded member 3. When the screw 5 rotates to the bottom and generates a pulling force on the threaded member 3, the second external spiral rib has an axial limiting effect to prevent the threaded member 3 from falling off from the housing; similarly, the screw 5 generates a circumferential force on the threaded member 3 during rotation. Since the rotation direction of the second external spiral rib is the same as that of the internal threaded hole 302, the external threaded member 3 has a tendency to rotate circumferentially under the action of the circumferential force, but the threaded member 3 is die-cast in the housing and will not move inwards anymore, which also generates an axial limiting effect on the threaded member 3.

[0055] The provision of the second outer spiral rib is also beneficial to the casing body 101 during the die-casting process. When the molten metal covers the threaded part 3, the molten metal can flow along the second outer spiral rib, thereby improving the fit between the molten metal and the outer wall surface of the threaded part 3, thereby improving the connection firmness between the threaded part 3 and the casing body 101.

[0056] Furthermore, the threaded member 3 may be a standard wire thread insert 6; or a metal block may be used for reprocessing.

[0057] Preferably, Figure 6 and Figure 7 As shown, the limiting ribs include a plurality of inclined ribs 304 , and the plurality of inclined ribs 304 extend along the circumferential direction and the axial direction of the outer surface of the threaded member 3 at the same time.

[0058] like Figure 6 As shown, by providing inclined ribs, the inclined ribs can limit and fix the threaded member 3 in the axial direction, and can also limit and fix the threaded member 3 in the circumferential direction.

[0059] Preferably, the limiting rib comprises an annular reinforcing rib, and the annular reinforcing rib surrounds the threaded member 3 for one circle;

[0060] and / or,

[0061] The outer wall of the threaded member 3 is provided with axial reinforcement ribs 303 , and the axial reinforcement ribs 303 extend along the axial direction of the threaded member 3 .

[0062] On the one hand, the annular reinforcement rib can exert a circumferential reinforcement effect on the threaded component 3 , and on the other hand, it can limit the threaded component 3 in the axial direction to prevent it from being pulled out of the housing body 101 under the action of the screw 5 .

[0063] like Figure 8 and Fig. 9 As shown, the axial reinforcing ribs 303 can, on the one hand, provide axial reinforcement for the threaded component 3 , and on the other hand, limit the threaded component 3 in the circumferential direction to prevent the threaded component 3 from rotating in the housing body 101 .

[0064] Preferably, Fig.10 and Fig.11 As shown, the outer wall of the limiting member 4 is provided with an annular groove 401 , and the annular groove 401 surrounds the threaded member 3 .

[0065] The annular groove 401 can limit the limiting member 4 in the axial direction, thereby preventing the limiting member 4 from falling off the base body 201 .

[0066] Furthermore, the outer diameter of the limiter 4 is larger than the outer diameter of the nut of the screw 5, for example, 2 mm larger, so that there is a sufficient contact area between the nut of the screw 5 and the limiter 4, ensuring the friction between the screw 5 and the base assembly.

[0067] The provision of the annular groove 401 can reduce the processing cost and is suitable for a smaller force environment.

[0068] On the cross section passing through the axis of the limiting member 4 , the shape of the annular groove 401 can be rectangular, triangular, trapezoidal, or semicircular.

[0069] like Fig.12 As shown, an annular rib 403 may also be provided on the outer wall of the limit member 4. The provision of the annular rib 403 can increase the bonding area between the limit member 4 and the base body 201, and the bonding degree between the limit member 4 and the base body 201 is higher. At the same time, the annular rib 403 can also strengthen the circumferential structural strength of the limit member 4.

[0070] Preferably, Figure 2 and Fig.13 As shown, the housing body 101 is provided with a first surface 1011 for pressing against the base body 201, and the screw member 3 includes a limiting end 305 extending out of the first surface 1011; the base body 201 is provided with a second surface 2011 for pressing against the housing body 101;

[0071] The limiting member 4 is provided with an annular groove 402 , and when the first surface 1011 and the second surface 2011 are pressed against each other, the limiting end 305 is inserted into the annular groove 402 .

[0072] When the limiting end 305 is inserted into the annular groove 402, a radial limit is formed between the base body 201 and the casing body 101, which is not only conducive to the internal threaded hole 302 being relative to the through hole, but also can be limited in the radial direction after being firmly fixed, thereby preventing the casing body 101 from moving relative to the base body 201 along the plane where the first surface 1011 is located.

[0073] The first surface 1011 and the second surface 2011 are pressed and fitted with each other, which improves the consistency of the product. The limiting end 305 is inserted into the annular groove 402, which can improve the accuracy and stability of the center height of the casing body 101, which is beneficial to the installation and matching of the motor.

[0074] The fit between the first surface 1011 and the second surface 2011 improves the accuracy of the fit between the housing body 101 and the base body 201, ensures the balance of force between the two surfaces, reduces vibration wear and looseness caused by uneven assembly, and improves the long-term reliability of the product and load balance. At the same time, the assembly fit is high, avoiding rapid failure of the installation caused by the jitter of the whole machine under load after virtual installation.

[0075] Furthermore, the limiting end 305 is annular, and the outer wall surface of the limiting end 305 is interference fit with the inner wall surface of the annular groove 402. The limiting end 305 extends into the annular groove 402 and does not contact the bottom surface of the annular groove 402, thereby preventing obstruction of the fit between the first surface 1011 and the second surface 2011.

[0076] Preferably, a gasket is provided between the first surface 1011 and the second surface 2011 , and the material of the gasket is the same as that of the threaded member 3 , or the material of the gasket is the same as that of the limiting member 4 .

[0077] The material of the gasket is the same as at least one of the screw member 3 and the stopper 4. When the screw member 3 and the stopper 4 are made of the same material, the gasket, the screw member 3 and the stopper 4 are all made of the same material. By providing the gasket between the two surfaces, the fit between the gasket and the first surface 1011 can be improved, and the fit between the gasket and the second surface 2011 can be improved, thereby improving the firmness of the connection between the housing body 101 and the base body 201.

[0078] Preferably, Fig.13 As shown, one of the first surface 1011 and the second surface 2011 is provided with a first protruding structure 701 , and the other is provided with a first concave structure, and the first protruding structure is adapted to fit with the first concave structure.

[0079] The preliminary position limiting between the base body and the base body 201 is achieved through the cooperation between the first protrusion and the first depression. When the position accuracy requirement between the case body 101 and the base body 201 is not very high, the position limiting can be performed in this way. Further, when the cooperation accuracy between the case and the base is required to be high, a first pin hole is provided on the first surface 1011, and a second pin hole is provided on the second surface 2011. The high-precision cooperation between the case body 101 and the base body 201 is achieved by inserting a pin in the first pin hole and the second pin hole. In the specific process, the primary position limiting is first performed by the first protrusion structure 701 and the first depression structure. At this time, the first pin hole and the second pin hole are basically aligned. The insertion end of the pin is conical. The insertion end is inserted into the second pin hole from the bottom of the base, and then enters the first pin hole, thereby achieving the precise position limiting between the case body 101 and the base body 201.

[0080] Preferably, the outer wall surface of the threaded member 3 is provided with a second protruding structure and / or a second concave structure, and the outer wall surface of the limiting member 4 is provided with a third protruding structure and / or a third concave structure.

[0081] The raised and / or recessed structures limit the threaded member 3 and the limiting member 4, thereby achieving positioning between the threaded member 3 and the casing body 101, making the threaded member 3 more secure in the casing body 101; similarly, the limiting member 4 is also more secure in the base body 201.

[0082] The present invention further provides a motor device, comprising a stator and the housing mounting assembly, wherein the stator is disposed in the housing body 101 .

[0083] Specifically, the casing body 101 and the base body 201 of the present application are both cast aluminum parts, and the threaded part 3, the limit part 4 and the screw 5 are all made of 45 steel, which are heat-treated to improve the surface hardness and wear resistance.

[0084] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A housing mounting assembly, comprising a housing assembly (1) and a base assembly (2), characterized in that: The housing assembly (1) comprises a housing body (101) and a threaded member (3) embedded in the housing body (101), wherein the threaded member (3) is provided with an internal threaded hole (302), the housing body (101) is a die-casting, and the wear resistance and hardness of the threaded member (3) are higher than those of the housing body (101); the base assembly (2) comprises a base body (201) and a stopper (4) embedded in the base body (201), The base body (201) is a die-casting part, the limiting part (4) has a through hole, and the wear resistance and hardness of the limiting part (4) are higher than the wear resistance and hardness of the base body (201); when the housing component (1) and the base component (2) are combined together, the through hole corresponds to the internal threaded hole (302), and screws (5) are inserted into the through hole and the internal threaded hole (302), and the material of the screw (5) is the same as that of the threaded part (3).

2. The housing mounting assembly according to claim 1, characterized in that: The outer wall of the threaded member (3) is provided with limiting ribs.

3. The housing mounting assembly according to claim 2, characterized in that: The limiting rib comprises a first external spiral rib (301), wherein the direction of rotation of the first external spiral rib (301) is opposite to the direction of rotation of the thread of the internal threaded hole (302).

4. The housing mounting assembly according to claim 2, characterized in that: The limiting rib comprises a second external spiral rib, the rotation direction of the second external spiral rib is the same as the rotation direction of the thread of the internal threaded hole (302).

5. The housing mounting assembly according to claim 2, characterized in that: The limiting ribs include a plurality of inclined ribs (304), and the plurality of inclined ribs (304) extend simultaneously along the circumferential direction and the axial direction of the outer surface of the threaded member (3).

6. The housing mounting assembly according to claim 2, characterized in that: The limiting ribs include an annular reinforcing rib, and the annular reinforcing rib surrounds the threaded member (3); and / or, The outer wall of the threaded member (3) is provided with axial reinforcing ribs (303), and the axial reinforcing ribs (303) extend along the axial direction of the threaded member (3).

7. The housing mounting assembly according to claim 1, characterized in that: An annular groove (401) is provided on the outer wall of the limiting member (4), and the annular groove (401) surrounds the limiting member (4).

8. The housing mounting assembly according to claim 1, characterized in that: The housing body (101) is provided with a first surface (1011) for pressing against the base body (201), and the threaded member (3) comprises a limiting end (305) extending out of the first surface (1011); the base body (201) is provided with a second surface (2011) for pressing against the housing body (101); The limiting member (4) is provided with an annular groove (402), and when the first surface (1011) and the second surface (2011) are pressed against each other, the limiting end (305) is inserted into the annular groove (402).

9. The housing mounting assembly according to claim 8, characterized in that: A gasket is provided between the first surface (1011) and the second surface (2011), and the material of the gasket is the same as the material of the threaded member (3), or the material of the gasket is the same as the material of the limiting member (4).

10. The housing mounting assembly according to claim 8, characterized in that: One of the first surface (1011) and the second surface (2011) is provided with a first protruding structure (701), and the other is provided with a first concave structure, and the first protruding structure is adapted to fit with the first concave structure.

11. The housing mounting assembly according to any one of claims 1 to 10, characterized in that: The outer wall surface of the threaded member (3) is provided with a second protruding structure and / or a second recessed structure, and the outer wall surface of the limiting member (4) is provided with a third protruding structure and / or a third recessed structure.

12. A motor device, characterized in that: It comprises a stator and a housing mounting assembly as claimed in any one of claims 1 to 11, wherein the stator is arranged in the housing body (101).

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