Bearing connecting structure and vehicle

Abstract

The utility model relates to the technical field of vehicle production and manufacturing, in particular to a bearing connecting structure and a vehicle. The bearing rotates in the mounting groove, and the vibration isolation piece is arranged between the mounting groove and the bearing and surrounds the bearing, so that the effect of reducing noise can be achieved. Specifically, the wave crest section and the wave trough section corresponding to the first corrugated structure and the second corrugated structure on the vibration isolation piece can play a role in buffering the shell and the bearing, direct contact between the bearing and the shell is avoided, energy transmitted to the shell by the bearing is effectively reduced, and then gear order noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle production and manufacturing, and particularly relates to a bearing connection structure and a vehicle. Background Art

[0002] The power system of the motor plus reducer of new energy vehicles is gradually replacing the engine plus gearbox, and the integrated structure of the motor, reducer and controller is gradually becoming a trend. At the same time, consumers have higher and higher requirements for the noise, vibration and harshness (English full name: Noise Vibration and Harshness, abbreviated as NVH) performance of vehicles. Since electric vehicles lose the shielding effect of the engine, the control of their electric drive noise has become the focus of attention of major vehicle manufacturers and even customers. Therefore, how to control the electric drive noise is a technical problem to be solved urgently. Summary of the Utility Model

[0003] The purpose of this application is to provide a bearing connection structure and a vehicle.

[0004] This application provides a bearing connection structure, including a housing, a vibration isolator and a bearing. The housing forms an installation groove, the bearing is arranged in the installation groove, the vibration isolator is arranged between the installation groove and the bearing. The vibration isolator is of an annular structure, the outer side wall of the vibration isolator forms a first corrugated structure, the inner side wall of the vibration isolator forms a second corrugated structure. The wave crest sections and wave trough sections of the first corrugated structure and the second corrugated structure correspond to each other, and the wave crest of the wave crest section and the wave trough of the wave trough section are on the same radius path.

[0005] In an exemplary embodiment of this application, the wave crest section of the first corrugated structure is the first wave crest section; the wave trough section of the first corrugated structure is the first wave trough section; the wave crest section of the second corrugated structure is the second wave crest section; the wave trough section of the second corrugated structure is the second wave trough section; the first wave crest section and the second wave trough section correspond to each other, the wave crest of the first wave crest section and the wave trough of the second wave trough section are on the first radius path; the first wave trough section and the second wave crest section correspond to each other, the wave trough of the first wave trough section and the wave crest of the second wave crest section are on the second radius path.

[0006] In an exemplary embodiment of this application, the vibration isolator is a plastic vibration isolator, and the plastic vibration isolator includes a special polymer of polyether ether ketone.

[0007] In an exemplary embodiment of this application, a first oil passage hole is formed between the first corrugated structure and the outer side wall of the bearing, and a second oil passage hole is formed between the second corrugated structure and the inner side wall of the housing.

[0008] In an exemplary embodiment of the present application, the vibration isolator further includes a limiting portion, the limiting portion is connected to the inner side wall and extends towards the center, and the limiting portion is located on the side of the bearing facing the bottom of the mounting groove.

[0009] In an exemplary embodiment of the present application, in the radial direction, the width of the limiting portion is less than the thickness of the bearing.

[0010] In an exemplary embodiment of the present application, the housing includes a reducer housing, a motor housing, and a compressor housing.

[0011] In an exemplary embodiment of the present application, the bearing connection structure further includes a gear shaft, the gear shaft includes a connection portion and a gear, the connection portion and the gear are coaxially arranged, the connection portion is connected to the bearing, and the gear is used to drive the transmission structure.

[0012] In an exemplary embodiment of the present application, the connection portion and the gear are of an integral structure.

[0013] The present application also provides a vehicle, including the bearing connection structure described above.

[0014] A bearing connection structure and a vehicle according to the solution of the present application have the following beneficial effects: The bearing rotates in the mounting groove. By arranging the vibration isolator between the mounting groove and the bearing and surrounding the bearing, it can play a role in reducing noise. Specifically, the peak segments and valley segments corresponding to the first corrugated structure and the second corrugated structure on the vibration isolator can buffer the housing and the bearing, avoiding direct contact between the bearing and the housing, thereby effectively reducing the energy transmitted from the bearing to the housing, and further reducing the gear order noise.

[0015] Other features and advantages of the present application will become apparent from the following detailed description, or will be partially learned through the practice of the present application.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is an exploded schematic view of a bearing connection structure in an embodiment of the present invention;

[0019] Figure 2 is the front view schematic diagram of the vibration isolation member in the embodiment of the present utility model;

[0020] Figure 3 is the axonometric schematic diagram of the vibration isolation member in the embodiment of the present utility model.

[0021] Explanation of reference numerals:

[0022] 10. Housing; 11. Installation groove; 20. Vibration isolation member; 21. First corrugated structure; 22. Second corrugated structure; 23. Radius path; 211. First wave crest section; 212. First wave trough section; 221. Second wave crest section; 222. Second wave trough section; 231. First radius path; 232. Second radius path; 241. First oil passage hole; 242. Second oil passage hole; 25. Limiting part; 30. Bearing; 40. Gear shaft; 41. Connecting part; 42. Gear. Detailed implementation manners

[0023] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0024] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0025] The following further details this application with reference to the accompanying drawings and specific embodiments. It should be noted here that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain this application and should not be construed as limiting this application.

[0026] It should be noted that: "a plurality of" mentioned in this article means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0027] The rapid economic development has promoted the growth of the number of cars owned by residents, but also aggravated energy shortages, environmental pollution and other issues. Automobile energy and environmental issues are a major challenge facing the world. New energy vehicles have emerged. The power system of motor and reducer is gradually replacing the engine and gearbox, and the integrated structure of motor, reducer and controller has gradually become a trend. At the same time, consumers have higher and higher requirements for the noise, vibration and harshness (NVH) performance of automobiles. Electric vehicles have lost the shielding effect of the engine, and their electric drive noise control has become the focus of major OEMs and even customers. Therefore, how to control electric drive noise is a technical problem that needs to be solved urgently.

[0028] Commonly used design solutions to reduce NVH performance include: 1. Gear macro parameter design and gear modification optimization can reduce gear transmission errors to a certain extent, but due to the influence of gear processing / installation / housing deformation, gear noise still accounts for a high proportion of howling; 2. Improving the gear accuracy level will increase the cost accordingly and affect production efficiency; 3. Strengthening the housing will increase the weight of the assembly and fail to meet the requirements of lightweight assembly design. Therefore, it is necessary to seek new design solutions based on the commonly used designs.

[0029] In order to solve the above technical problems, refer to Figures 1 to 3 As shown, the present application provides a bearing connection structure, including a housing 10, a vibration isolator 20 and a bearing 30, wherein the housing 10 forms a mounting groove 11, the bearing 30 is arranged in the mounting groove 11, the vibration isolator 20 is arranged between the mounting groove 11 and the bearing 30, the vibration isolator 20 is an annular structure, the outer wall of the vibration isolator 20 forms a first corrugated structure 21, the inner wall of the vibration isolator 20 forms a second corrugated structure 22, the crest section and the trough section of the first corrugated structure 21 and the second corrugated structure 22 correspond to each other, and the crest of the crest section and the trough of the trough section are on the same radius path 23. Thus, the bearing 30 rotates in the mounting groove 11, and by arranging the vibration isolator 20 between the mounting groove 11 and the bearing 30, surrounding the bearing 30, it can play a role in reducing noise. Specifically, the peak sections and trough sections corresponding to the first corrugated structure 21 and the second corrugated structure 22 on the vibration isolation member 20 can buffer the housing 10 and the bearing 30, avoiding direct contact between the bearing 30 and the housing 10, thereby effectively reducing the energy transferred from the bearing 30 to the housing 10, and further reducing the order noise of the gear 42.

[0030] In some embodiments, the housing 10 includes but is not limited to a reducer housing, a motor housing, and a compressor housing. The bearing connection structure in the present application can be applied to the above housing structures to reduce NVH performance.

[0031] In some embodiments, the material of the housing 10 can be materials such as iron and aluminum, and it can be formed by a casting process. The material and process method are selected according to actual needs and are not specifically limited herein.

[0032] In some embodiments, the sizes of the mounting groove 11 and the bearing 30 correspond to each other. Their specific sizes are selected according to the actual situation and are not specifically limited herein.

[0033] In some embodiments, referring to Figure 1 As shown, the bearing connection structure further includes a gear shaft 40. The gear shaft 40 includes a connection portion 41 and a gear 42. The connection portion 41 and the gear 42 are coaxially arranged. The connection portion 41 is connected to the bearing 30, and the gear 42 is used to drive the transmission structure. Specifically, the connection portion 41 and the gear 42 are an integral structure. The gear 42 can be formed by processes such as cutting and hobbing on the blank of the gear shaft 40. The gear 42 can be a helical gear 42, a spur gear 42, etc. The connection portion 41 is a cylindrical structure and extends into the bearing 30 to cooperate with the bearing 30.

[0034] In some embodiments, referring to Figure 2 As shown, the peak section of the first corrugated structure 21 protrudes in a direction away from the axis, and the trough section of the second corrugated structure 22 protrudes in a direction close to the axis. The peak section and the trough section correspond such that their protruding directions are opposite, thereby forming a gap between the bearing 30 and the housing 10 and achieving a better buffering effect.

[0035] In some embodiments, referring to Figure 2As shown, the peak section of the first corrugated structure 21 is the first peak section 211; the trough section of the first corrugated structure 21 is the first trough section 212; the peak section of the second corrugated structure 22 is the second peak section 221; the trough section of the second corrugated structure 22 is the second trough section 222; the first peak section 211 corresponds to the second trough section 222, and the peak of the first peak section 211 and the trough of the second trough section 222 are located on the first radius path 231; the first trough section 212 corresponds to the second peak section 221, and the trough of the first trough section 212 and the peak of the second peak section 221 are located on the second radius path 232. Specifically, the number of the first peak section 211, the second peak section 221, the first trough section 212, and the second trough section 222 is configured as multiple, and the specific number is set according to actual needs and is not specifically limited here. When the first peak section 211 corresponds to the second trough section 222 and the first trough section 212 corresponds to the second peak section 221, on the side close to the housing 10, the first peak section 211 plays a supporting role, and the first trough section 212 is recessed to form a gap; on the side close to the bearing 30, the first trough section 212 plays a supporting role, and the first peak section 211 is recessed to form a gap. Thus, support can be simultaneously provided on both the inner wall and the outer wall of the vibration isolator 20, and gaps can also be formed, achieving a better vibration isolation effect.

[0036] In some embodiments, the vibration isolator 20 is a plastic vibration isolator, and the plastic vibration isolator includes a special polymer of polyether ether ketone. Polyether ether ketone belongs to the category of engineering plastics, is light in weight, wear-resistant and high-temperature resistant, and can be easily processed into various shapes through casting processing methods. Specifically, this structure is obtained through an injection molding process, and the production process is simple.

[0037] In some embodiments, referring to Figure 3 As shown, a first oil passage hole 241 is formed between the first corrugated structure 21 and the outer wall of the bearing 30, and a second oil passage hole 242 is formed between the second corrugated structure 22 and the inner wall of the housing 10. The first oil passage hole 241 is equivalent to the gap formed by the depression of the first trough section 212, and the second oil passage hole 242 is equivalent to the gap formed by the depression of the first peak section 211. Lubricating oil will flow through the first oil passage hole 241 and the second oil passage hole 242 to improve the lubrication and cooling effects of the bearing 30.

[0038] In some embodiments, referring to Figure 3As shown, the vibration isolator 20 further includes a limiting portion 25. The limiting portion 25 is connected to the inner side wall and extends towards the center, and the limiting portion 25 is located on the side of the bearing 30 facing the bottom of the mounting groove 11. The limiting portion 25, the first corrugated structure 21, and the second corrugated structure 22 are an integral structure. When the vibration isolator 20 is sleeved on the bearing 30, the limiting portion 25 can abut against the cross-section of the bearing 30; it can also prevent the vibration isolator 20 from falling off between the bearing 30 and the housing 10 during the rotation of the bearing 30, playing a better fixing role.

[0039] In some embodiments, in the radial direction, the width of the limiting portion 25 is smaller than the thickness of the bearing 30. Such a design ensures that the limiting portion 25 does not affect the cooperation between the bearing 30 and the gear shaft 40 and avoids interference.

[0040] In this application, the peak segments and valley segments corresponding to the first corrugated structure 21 and the second corrugated structure 22 on the vibration isolator 20 can buffer the housing 10 and the bearing 30, avoiding direct contact between the bearing 30 and the housing 10. Thus, the energy transmitted from the bearing 30 to the housing 10 is effectively reduced, and further, the gear 42 - order noise is reduced. The first oil passage hole 241 is formed by the depression of the first valley segment 212 to form a void, and the second oil passage hole 242 is formed by the depression of the first peak segment 211 to form a void. Lubricating oil will flow through the first oil passage hole 241 and the second oil passage hole 242, improving the lubrication and cooling effect of the bearing 30.

[0041] This application provides a vehicle, including the above - mentioned bearing connection structure.

[0042] In this application, unless otherwise clearly specified and limited, terms such as "arranged (provided with)", "connected" should 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 components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in this application can be understood according to specific situations.

[0043] In the description of this specification, the description referring to terms such as "some embodiments" means that the specific features, structures, materials, or characteristics described in connection with the embodiment are included in at least one embodiment of this application. In this specification, the schematic representation of the above - mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and the description of the present application shall fall within the scope covered by the patent of the present application.

Claims

1. A bearing connection structure, characterized in that: The invention comprises a shell, a vibration isolator and a bearing, wherein the shell forms a mounting groove, the bearing is arranged in the mounting groove, the vibration isolator is arranged between the mounting groove and the bearing, the vibration isolator is an annular structure, the outer wall of the vibration isolator forms a first corrugated structure, the inner wall of the vibration isolator forms a second corrugated structure, the crest section and the trough section of the first corrugated structure correspond to each other, and the crest of the crest section and the trough of the trough section are on the same radial path.

2. The bearing connection structure according to claim 1, characterized in that: The wave crest section of the first corrugated structure is a first wave crest section; the wave trough section of the first corrugated structure is a first wave trough section; the wave crest section of the second corrugated structure is a second wave crest section; The trough section of the second corrugated structure is a second trough section; the first peak section corresponds to the second trough section, and the peak of the first peak section and the trough of the second trough section are located on a first radial path; the first trough section corresponds to the second peak section, and the trough of the first trough section and the peak of the second peak section are located on a second radial path.

3. The bearing connection structure according to claim 1, characterized in that: The vibration isolator is a plastic vibration isolator, and the plastic vibration isolator includes a special polymer of polyetheretherketone.

4. The bearing connection structure according to claim 1, characterized in that: A first oil hole is formed between the first corrugated structure and the outer side wall of the bearing, and a second oil hole is formed between the second corrugated structure and the inner side wall of the housing.

5. The bearing connection structure according to claim 1, characterized in that: The vibration isolator also includes a limiting portion, which is connected to the inner side wall and extends toward the center. The limiting portion is located on a side of the bearing facing the bottom of the installation groove.

6. The bearing connection structure according to claim 5, characterized in that: In the radial direction, the width of the limiting portion is smaller than the thickness of the bearing.

7. The bearing connection structure according to claim 1, characterized in that: The housing includes a reducer housing, a motor housing, and a compressor housing.

8. The bearing connection structure according to claim 1, characterized in that: The bearing connection structure also includes a gear shaft, which includes a connecting portion and a gear. The connecting portion and the gear are coaxially arranged, the connecting portion is connected to the bearing, and the gear is used to drive the transmission structure.

9. The bearing connection structure according to claim 8, characterized in that: The connecting portion and the gear are an integrated structure.

10. A vehicle, characterized in that: The bearing connection structure comprises the bearing connection structure according to any one of claims 1 to 9.

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