Shell assembly, electric drive assembly and vehicle

Abstract

This application relates to the field of vehicle technology, specifically disclosing a housing assembly, an electric drive assembly, and a vehicle. The housing assembly includes a housing body, a damping assembly, and a cover plate. The outer wall of the housing body is provided with a plurality of receiving grooves. The damping assembly is filled in the receiving grooves. The cover plate is connected to the housing body and covers at least part of the receiving grooves. The housing assembly of this application, by providing receiving grooves on its outer wall and filling them with damping assemblies, and using a cover plate to connect the housing assembly and cover the receiving grooves, forms an integrated structure of the damping assembly, cover plate, and housing assembly. This structure can absorb the vibration energy generated by gear meshing, reduce the sound energy radiation along the noise propagation path, thereby reducing noise, improving the noise environment inside the vehicle, and enhancing the stability and reliability of vehicle operation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a housing assembly, an electric drive assembly, and a vehicle. Background Technology

[0002] When the electric drive assembly of a vehicle is working, the gear assembly of the reducer rotates and meshes with each other. This process is prone to generating noise, part of which is transmitted through the air and the other part is radiated through the housing assembly of the reducer.

[0003] However, most vehicles currently suffer from problems such as loud reducer noise and poor interior noise environment. Utility Model Content

[0004] This application provides a housing assembly, an electric drive assembly, and a vehicle. The housing assembly can absorb or reduce the propagation of noise energy, improve the noise environment inside the vehicle, and enhance the stability and reliability of the vehicle during operation.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a housing assembly, which includes a housing body, a damping assembly and a cover plate; the outer wall of the housing body is provided with a plurality of receiving grooves; the damping assembly is filled in the receiving grooves; the cover plate is connected to the housing body and covers at least part of the receiving grooves.

[0006] The outer wall of the shell body is provided with multiple first reinforcing ribs and multiple second reinforcing ribs. The multiple first reinforcing ribs and multiple second reinforcing ribs intersect to form a reinforcing grid, and each reinforcing grid corresponds to a receiving groove.

[0007] The shell body is provided with a bearing chamber, and a first reinforcing rib extends circumferentially around the bearing chamber; at least a portion of the second reinforcing ribs extend from the bearing chamber to the edge of the shell body and are arranged at intervals along the circumferential direction of the bearing chamber.

[0008] The bearing housing includes a first sub-bearing housing, a second sub-bearing housing, and a third sub-bearing housing, with the first and second sub-bearing housings arranged at intervals. The first reinforcing rib includes a U-shaped first sub-reinforcing rib, with both ends of the first sub-reinforcing rib connected to the first sub-bearing housing, and the middle part of the first sub-reinforcing rib bent and arranged around the outer periphery of the second sub-bearing housing.

[0009] The bearing housing further includes a third sub-bearing housing, which is arranged at intervals with the second sub-bearing housing and is located on the side of the second sub-bearing housing away from the first sub-bearing housing; the first reinforcing rib also includes a second sub-reinforcing rib, which is also U-shaped, and the two ends of the second sub-reinforcing rib are respectively connected to the portions located on both sides of the first sub-reinforcing rib, and the middle portion of the second sub-reinforcing rib is bent and arranged around the outer periphery of the third sub-bearing housing; wherein, at least a portion of the second reinforcing rib extends from the second sub-bearing housing to the third sub-bearing housing.

[0010] The first reinforcing rib also includes a third sub-reinforcing rib, one end of which is connected to the first sub-bearing chamber, and the other end extends along the edge of the shell body to the part of the first sub-reinforcing rib that is away from the first sub-bearing chamber.

[0011] The shell body has several mounting holes located at the intersection of the first reinforcing rib and the second reinforcing rib. The shell body assembly also includes a fastener that passes through the cover plate into the mounting hole, so that the cover plate is fixedly connected to the shell body.

[0012] The cover plate is provided with a clearance hole, which is connected to the bearing chamber.

[0013] This application also includes a second technical solution, providing an electric drive assembly, including the aforementioned housing assembly and reducer, with the reducer disposed within the housing assembly.

[0014] This application also includes a third technical solution, providing a vehicle including the aforementioned electric drive assembly.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, the housing assembly provided in this application includes a housing body, a damping component, and a cover plate. The outer wall of the housing body is provided with several receiving grooves. The damping component is filled within the receiving grooves. The cover plate is connected to the housing body and covers at least a portion of the receiving grooves. By providing receiving grooves on the outer wall of the housing body and filling them with damping components, and using a cover plate to connect the housing body and cover the receiving grooves, the housing assembly, cover plate, and housing body form an integrated structure. This structure can absorb the vibration energy generated by gear meshing, reduce the sound energy radiation along the noise propagation path, thereby reducing noise, improving the noise environment inside the vehicle, and enhancing the stability and reliability of vehicle operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a schematic diagram of a housing assembly according to an embodiment of the present application, wherein the housing assembly includes a housing body;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure of section AA in the middle;

[0019] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle shell.

[0020] Reference numerals: 1. Shell body; 11. First reinforcing rib; 111. First sub-reinforcing rib; 112. Second sub-reinforcing rib; 113. Third sub-reinforcing rib; 12. Second reinforcing rib; 13. Receiving groove; 14. Bearing chamber; 141. First sub-bearing chamber; 142. Second sub-bearing chamber; 143. Third sub-bearing chamber; 15. Mounting hole; 2. Damping assembly; 3. Cover plate; 31. Clearance hole; 4. Fastener; 100. Shell assembly. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Please refer to the reference. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of one embodiment of the housing assembly provided in this application. Figure 2 yes Figure 1 A structural schematic diagram of the AA section. In one aspect, this application provides a housing assembly 100, which includes a housing body 1, a damping assembly 2, and a cover plate 3. The outer wall of the housing body 1 is provided with a plurality of receiving grooves 13; the damping assembly 2 is filled in the receiving grooves 13; the cover plate 3 is connected to the housing body 1 and covers at least a portion of the receiving grooves 13. The housing assembly 100 of this embodiment, by providing receiving grooves 13 on the outer wall of the housing body 1 and filling them with damping assemblies 2, and using a cover plate 3 to connect the housing body 1 and cover the receiving grooves 13, forms an integral structure of the damping assembly 2, the cover plate 3, and the housing body 1. This structure can absorb the vibration energy generated by gear meshing, reduce the sound energy radiation along the noise propagation path, thereby reducing noise, improving the noise environment inside the vehicle, and enhancing the stability and reliability of vehicle operation.

[0026] Specifically, the housing assembly 100 includes a housing body 1, a damping assembly 2, and a cover plate 3. The outer wall of the housing body 1 has a receiving groove 13 for accommodating the damping assembly 2. The damping assembly 2 can be filled in the receiving groove 13 in the form of damping material. The cover plate 3 covers at least part of the receiving groove 13 through a connecting structure. By providing a receiving groove 13 on the outer wall of the housing and filling it with the damping assembly 2, the vibration energy generated by gear meshing can be effectively absorbed, reducing the sound energy radiation along the noise propagation path. The composite structure formed by the damping assembly 2 and the cover plate 3 can change the modal characteristics of the housing body 1, avoiding the overlap of the excitation frequency and the resonant frequency, thereby reducing the noise peak in a specific frequency band.

[0027] Furthermore, the cover plate 3 can be made of composite damping steel plate. The partial or complete coverage of the receiving groove 13 by the cover plate 3 can form an acoustic barrier, reducing the propagation efficiency of high-frequency noise. This structural design, while keeping the processing cost under control, can achieve noise optimization of more than 5dB(A) in the 500-2000Hz frequency range and noise improvement of more than 3dB(A) in the frequency range above 2000Hz, thereby improving the noise environment inside the vehicle and enhancing comfort.

[0028] Furthermore, the damping component 2 can fill the receiving groove 13, enabling it to contact the shell body 1 and the cover plate 3 without gaps, thereby improving the noise reduction effect and the stability of the structure.

[0029] Please continue to combine Figure 3 , Figure 3 yes Figure 1 A schematic diagram of the structure of the shell body. In one embodiment of this application, the outer wall of the shell body 1 is provided with multiple first reinforcing ribs 11 and multiple second reinforcing ribs 12. The multiple first reinforcing ribs 11 and multiple second reinforcing ribs 12 intersect to form a reinforcing grid, and each reinforcing grid corresponds to a receiving groove 13.

[0030] Specifically, the first reinforcing rib 11 and the second reinforcing rib 12 on the outer wall of the shell body 1 are arranged in a crisscross pattern, forming multiple interconnected grid structures. Each grid area is provided with a corresponding receiving groove 13, which can accommodate the installation of the damping component 2. The intersection angle between the first reinforcing rib 11 and the second reinforcing rib 12 can be a right angle or an oblique angle, and the specific shape can be adjusted according to the structural requirements of the shell body 1. The shape and size of the receiving groove 13 are related to the intersection point position and density of the reinforcing ribs.

[0031] Furthermore, the grid structure formed by the intersecting first reinforcing ribs 11 and second reinforcing ribs 12 can disperse the force on the shell body 1, improve structural rigidity, and also provide directional filling space for the damping component 2. The arrangement of the first reinforcing ribs 11 and second reinforcing ribs 12 can also change the modal frequency of the shell body 1, reduce the vibration energy at a specific frequency, and thus improve the noise at a specific vehicle speed. The one-to-one correspondence between the receiving groove 13 and the grid allows the damping component 2 to form a tight contact with the cover plate 3 and the shell body 1, thereby enhancing the absorption effect of vibration energy. This structure, through multi-level vibration reduction design, combines the reinforcing ribs and the damping component 2 to improve the noise reduction effect, changing the modal frequency distribution of the shell body 1 and increasing the vibration energy dissipation path, thereby reducing the noise in the 500-2000Hz frequency range by more than 5dB and the noise in the frequency range above 2000Hz by more than 3dB. The intersecting grid structure also has the characteristics of strong process compatibility, and can be realized through a one-time molding process, reducing manufacturing costs.

[0032] In one embodiment of this application, the shell body 1 is provided with a bearing chamber 14, and a first reinforcing rib 11 extends circumferentially around the bearing chamber 14; at least a portion of the second reinforcing ribs 12 extend from the bearing chamber 14 to the edge of the shell body 1 and are arranged at intervals along the circumferential direction of the bearing chamber 14.

[0033] Specifically, the shell body 1 has a bearing chamber 14 for mounting bearings inside. First reinforcing ribs 11 are distributed in a circumferential manner around the bearing chamber 14, forming a ring structure. Second reinforcing ribs 12 extend from the bearing chamber 14 to the edge of the shell body 1, radially distributed and maintaining circumferential spacing. By setting a grid structure around the bearing chamber 14 with ring and radial reinforcing ribs, the vibration modal characteristics of the shell body 1 can be altered, dispersing high-frequency vibration energy across a wider frequency range. This structural design not only enhances the local rigidity of the shell but also provides a stable fixing space for the damping assembly 2, ensuring a tight contact surface between the cover plate 3 and the shell body 1.

[0034] When the electric drive assembly is working, the vibration energy generated by gear meshing is dispersed by the reinforcing rib structure and absorbed by the damping component 2 during the propagation through the housing body 1, thereby reducing the noise radiation intensity.

[0035] In one specific embodiment, the first reinforcing rib 11 and the second reinforcing rib 12 can be manufactured by stamping metal sheets to reduce manufacturing costs. In another specific embodiment, the first reinforcing rib 11 and the second reinforcing rib 12 can also be manufactured by welding or casting processes.

[0036] In one embodiment of this application, the bearing chamber 14 includes a first sub-bearing chamber 141, a second sub-bearing chamber 142, and a third sub-bearing chamber 143, with the first sub-bearing chamber 141 and the second sub-bearing chamber 142 arranged at intervals; the first reinforcing rib 11 includes a U-shaped first sub-reinforcing rib 111, with both ends of the first sub-reinforcing rib 111 respectively connected to the first sub-bearing chamber 141, and the middle part of the first sub-reinforcing rib 111 is bent and arranged around the outer periphery of the second sub-bearing chamber 142.

[0037] Specifically, the bearing housing 14 includes three sub-bearing housings 14, wherein the first sub-bearing housing 141 and the second sub-bearing housing 142 are arranged at intervals. The first sub-reinforcing rib 111 adopts a U-shaped structure design, with its two ends connected to the first sub-bearing housing 141, and the middle part forming a structure surrounding the outer periphery of the second sub-bearing housing 142 by bending. The opening direction of the U-shaped structure faces the first sub-bearing housing 141, and the radius of curvature of the bent part can be determined according to the outer dimensions of the second sub-bearing housing 142, so that the surrounding structure maintains a certain distance of fitting gap with the outer wall of the bearing housing 14, so as to form the receiving groove 13 and provide a stable space for the damping assembly 2.

[0038] Furthermore, by having the bent portion of the U-shaped reinforcing rib surround the second sub-bearing chamber 142, a local stress dispersion area can be formed, improving the uniformity of vibration energy distribution of the shell body 1 under gear meshing excitation and reducing the risk of local resonance. This structural design allows the first reinforcing rib 11 to maintain its supporting role for the first sub-bearing chamber 141, and also to form a dynamic coupling with the second sub-bearing chamber 142 through the surrounding structure, thereby improving the effect of suppressing vibration transmission between the bearing chambers 14.

[0039] In one embodiment of this application, the bearing chamber 14 further includes a third sub-bearing chamber 143, which is arranged at intervals with the second sub-bearing chamber 142 and is located on the side of the second sub-bearing chamber 142 away from the first sub-bearing chamber 141; the first reinforcing rib 11 further includes a second sub-reinforcing rib 112, which is also U-shaped, and the two ends of the second sub-reinforcing rib 112 are respectively connected to the portions located on both sides of the first sub-reinforcing rib 111, the middle portion of the second sub-reinforcing rib 112 is bent and arranged around the outer periphery of the third sub-bearing chamber 143; wherein, at least a portion of the second reinforcing rib 12 extends from the second sub-bearing chamber 142 to the third sub-bearing chamber 143.

[0040] Specifically, the third sub-bearing chamber 143 is spaced apart from the second sub-bearing chamber 142 and is located on the side of the second sub-bearing chamber 142 away from the first sub-bearing chamber 141. The second sub-reinforcing rib 112 has a U-shaped structure, with its two ends connected to the two sides of the first sub-reinforcing rib 111, and its middle part wrapped around the outer periphery of the third sub-bearing chamber 143 by a bending design. Furthermore, a portion of the multiple second reinforcing ribs 12 can connect the second sub-bearing chamber 142 and the third sub-bearing chamber 143, which can enhance the structural connection between the second sub-bearing chamber 142 and the third sub-bearing chamber 143, and also facilitate the formation of a grid structure between the second sub-bearing chamber 142 and the third sub-bearing chamber 143.

[0041] Furthermore, by placing the third sub-bearing chamber 143 on the side of the second sub-bearing chamber 142 away from the first sub-bearing chamber 141, the spatial distribution between the sub-bearing chambers 14 can be optimized, avoiding stress concentration. Moreover, the placement of the second sub-reinforcing rib 112 can increase the number of layers in the multi-level vibration damping design, thereby improving the vibration damping effect, suppressing the noise propagation path, and while maintaining lightweight design, further improving the acoustic performance of the housing assembly 100 by optimizing stress distribution and vibration control, thereby reducing overall noise radiation.

[0042] In one embodiment of this application, the first reinforcing rib 11 further includes a third sub-reinforcing rib 113, one end of which is connected to the first sub-bearing chamber 141, and the other end extends along the edge of the shell body 1 to the portion connected to the first sub-reinforcing rib 111 away from the first sub-bearing chamber 141.

[0043] Specifically, one end of the third sub-reinforcing rib 113 is connected to the first sub-bearing chamber 141, and the other end extends along the edge of the shell body 1 and connects to the portion of the first sub-reinforcing rib 111 away from the first sub-bearing chamber 141. This structure enhances the structural rigidity of a local area of ​​the shell body 1 by forming a continuous network of reinforcing ribs in the edge region of the shell body 1. The extension path of the third sub-reinforcing rib 113 can be set along the curvature of the shell surface, or it can be in the form of a U-shape, with its two ends connected to the two sides of the first sub-bearing chamber 141 respectively, and the middle part bent and extending along the edge of the shell body 1.

[0044] In one embodiment of this application, the shell body 1 is provided with a plurality of mounting holes 15, the mounting holes 15 being located at the intersection of the first reinforcing rib 11 and the second reinforcing rib 12; the shell body 1 assembly also includes a fixing member 4, the fixing member 4 passing through the cover plate 3 into the mounting holes 15, so that the cover plate 3 is fixedly connected to the shell body 1.

[0045] Specifically, the mounting holes 15 on the shell body 1 are located at the intersection of the first reinforcing rib 11 and the second reinforcing rib 12. This location is connected to the shell body 1 via a fastener 4 passing through the cover plate 3. The layout of the mounting holes 15 works synergistically with the reinforcing rib structure. The fastener 4 can be mechanically fixed using bolts, rivets, or welding. The connection between the cover plate 3 and the shell body 1 is rigidly formed through the cooperation of the mounting holes 15 and the fastener 4. The structural strength at the intersection of the first reinforcing rib 11 and the second reinforcing rib 12 is sufficient to withstand the stress applied by the fastener 4. Furthermore, to reduce costs and increase efficiency, the fixing position and number of the mounting holes 15 are not required while ensuring stability and robustness, and can be adjusted according to actual conditions.

[0046] Furthermore, by placing the mounting hole 15 at the intersection of the first reinforcing rib 11 and the second reinforcing rib 12, the load-bearing capacity of this part can be improved by utilizing the reinforcing rib structure, making the connection between the cover plate 3 and the shell body 1 more stable. This design can improve the effect of dispersing the stress transmitted by the fastener 4, improve or avoid structural fatigue damage caused by local stress concentration, and at the same time enhance the connection stiffness between the cover plate 3 and the shell body 1. The reliable fixing of the fastener 4 can prevent or avoid the cover plate 3 from displacing or loosening under vibration conditions, thereby improving the stability of the overall structure. In this embodiment, the shell body 1 can reduce the vibration coupling effect on the noise propagation path by optimizing the structural strength of the connection part, and can further improve the acoustic performance in conjunction with the damping component 2.

[0047] In one embodiment of this application, as Figure 1 As shown, the cover plate 3 is provided with a clearance hole 31, which is connected to the bearing chamber 14.

[0048] Specifically, the clearance hole 31 provided on the cover plate 3 is used to form a communication channel between the cover plate 3 and the bearing chamber 14. The clearance hole 31 can be circular, elliptical, or irregularly shaped, and its position corresponds to the structure of the bearing chamber 14. By providing the clearance hole 31 to form a communication structure between the cover plate 3 and the bearing chamber 14, the heat accumulation during bearing operation can be reduced, the circulation of the lubricating medium can be improved, thereby reducing component deformation and noise increase caused by temperature rise. The communication design of the clearance hole 31 can also optimize the structural stress distribution and avoid vibration noise caused by local stress concentration. At the same time, this structure provides precise positioning space for bearing installation, ensuring the fitting accuracy between the bearing and the housing assembly 100, and reducing abnormal noise during operation. This design improves the stability of the bearing's working environment while ensuring structural strength, and has a synergistic effect on overall noise control.

[0049] Combination Figures 1 to 3In this embodiment of the application, the housing assembly 100 can be filled in the grid receiving groove 13 formed by the reinforcing ribs on the outer wall of the housing body 1 by the damping assembly 2, and the cover plate 3 is fixed to the housing body 1 by the fastener 4 passing through the mounting hole 15, forming a composite noise reduction system with structure-material synergistic vibration reduction, thereby reducing radiated noise in different frequency ranges and improving the effect and comfort of improving the noise environment inside the vehicle.

[0050] In another aspect, this application also provides an electric drive assembly, which includes the aforementioned housing assembly 100 and a reducer, the reducer being disposed within the housing assembly 100. Specifically, since this electric drive assembly includes the housing assembly 100 described in the above embodiments, it also possesses the beneficial effects of the aforementioned housing assembly 100, which will not be elaborated further here.

[0051] In another aspect, this application also provides a vehicle that includes the aforementioned electric drive assembly. Specifically, since the vehicle includes the electric drive assembly described in the above embodiments, it also possesses the beneficial effects of the aforementioned electric drive assembly, which will not be elaborated further here.

[0052] It should be noted that the terms "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. Similarly, the terms "parallel" and "perpendicular" do not imply that the components are absolutely parallel or perpendicular, but rather that they can have a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted. In addition, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships that are commonly used when the product of this application is in use. They are only for the purpose of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] It is understood that the term "multiple" in this document means at least two, such as two, three, etc., unless otherwise specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0054] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A housing assembly, characterized by, For a speed reducer, the housing assembly includes: Shell body (1), the outer wall of the shell body (1) is provided with a plurality of receiving grooves (13); Damping assembly (2), the damping assembly (2) being filled in the receiving groove (13); Cover plate (3), which is connected to the shell body (1) and covers at least part of the receiving groove (13).

2. The housing assembly according to claim 1, characterized in that, The outer wall of the shell body (1) is provided with multiple first reinforcing ribs (11) and multiple second reinforcing ribs (12). The multiple first reinforcing ribs (11) and multiple second reinforcing ribs (12) intersect to form a reinforcing grid, and each reinforcing grid corresponds to one receiving groove (13).

3. The housing assembly according to claim 2, characterized in that, The shell body (1) is provided with a bearing chamber (14), and the first reinforcing rib (11) extends circumferentially around the bearing chamber (14); At least a portion of the second reinforcing ribs (12) extend from the bearing chamber (14) to the edge of the shell body (1) and are arranged at circumferential intervals along the bearing chamber (14).

4. The housing assembly according to claim 3, characterized in that, The bearing chamber (14) includes a first sub-bearing chamber (141), a second sub-bearing chamber (142), and a third sub-bearing chamber (143), with the first sub-bearing chamber (141) and the second sub-bearing chamber (142) arranged at intervals; The first reinforcing rib (11) includes a U-shaped first sub-reinforcing rib (111), the two ends of which are respectively connected to the first sub-bearing chamber (141), and the middle part of the first sub-reinforcing rib (111) is bent and arranged around the outer periphery of the second sub-bearing chamber (142).

5. The housing assembly according to claim 4, characterized in that, The bearing chamber (14) further includes a third sub-bearing chamber (143), which is arranged at intervals with the second sub-bearing chamber (142) and is located on the side of the second sub-bearing chamber (142) away from the first sub-bearing chamber (141); The first reinforcing rib (11) further includes a second sub-reinforcing rib (112), which is also U-shaped. The two ends of the second sub-reinforcing rib (112) are respectively connected to portions located on both sides of the first sub-reinforcing rib (111). The middle portion of the second sub-reinforcing rib (112) is bent and surrounds the outer periphery of the third sub-bearing chamber (143). At least a portion of the second reinforcing rib (12) extends from the second sub-bearing chamber (142) to the third sub-bearing chamber (143).

6. The housing assembly according to claim 5, characterized in that, The first reinforcing rib (11) further includes a third sub-reinforcing rib (113), one end of which is connected to the first sub-bearing chamber (141), and the other end extends along the edge of the shell body (1) to the portion connected to the first sub-reinforcing rib (111) away from the first sub-bearing chamber (141).

7. The housing assembly according to claim 3, characterized in that, The shell body (1) is provided with a plurality of mounting holes (15), the mounting holes (15) being located at the intersection of the first reinforcing rib (11) and the second reinforcing rib (12); The shell body (1) assembly also includes a fastener (4) which passes through the cover plate (3) into the mounting hole (15) to fix the cover plate (3) to the shell body (1).

8. The housing assembly according to claim 3, characterized in that, The cover plate (3) is provided with a clearance hole (31), which is connected to the bearing chamber (14).

9. An electric drive assembly, comprising: include: The housing assembly according to any one of claims 1-8; The speed reducer is located within the housing assembly.

10. A vehicle characterized by comprising: include: The speed reducer as described in claim 9.

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