Hub bearing and vehicle

Abstract

The utility model relates to a hub bearing and a vehicle, belongs to the technical field of vehicles, and solves the problem that the hub bearing in the prior art is difficult to consider the impact resistance and the driving safety of the vehicle at the same time. The hub bearing comprises an inner flange, a flange and a plurality of first rollers, the inner flange comprises a flange inner ring and a first flange plate which are coaxially arranged, the outer flange comprises a flange outer ring, the flange outer ring is arranged on the outer side of the flange inner ring in a sleeving mode, and the end, facing the inner flange, of the flange outer ring is opposite to the first flange plate in the axial direction of the hub bearing. The multiple first rollers are arranged between the first flange plate and the flange outer ring and distributed in the circumferential direction of the first flange plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, concretely relates to a wheel hub bearing and vehicle. BACKGROUND

[0002] In the vehicle technical field, NVH performance has been an important index for measuring vehicle performance. In the process of vehicle driving, when the vehicle turns or encounters side-to-side collision or side-to-side driving on the road shoulder, the wheel hub bearing of the vehicle will be subjected to lateral impact, which will cause indentation in the raceway of the wheel hub bearing, resulting in an abnormal noise when the wheel hub bearing rotates at high speed, and adversely affecting the NVH performance of the vehicle.

[0003] In related technology, in order to improve the impact resistance of the wheel hub bearing, an impact-resistant wheel hub bearing is provided, which comprises a flange inner ring and a flange outer ring sleeved on the flange inner ring. One end of the flange inner ring has a coaxial flange plate. There is a gap between the flange outer ring and the flange plate, so that when the vehicle is subjected to lateral impact, the flange inner ring and the flange outer ring are in contact, which can improve the lateral impact resistance. However, under certain working conditions of the vehicle, the wheel hub bearing is prone to rotational jamming, which poses a risk to driving safety. Therefore, in related technology, the wheel hub bearing cannot simultaneously consider the impact resistance and the driving safety of the vehicle. SUMMARY

[0004] The utility model aims at overcoming the problem of the wheel hub bearing in related technology that cannot simultaneously consider the impact resistance and the driving safety of the vehicle.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] According to the first aspect of the present application, the present application provides a wheel hub bearing, which comprises an inner flange, a flange and a plurality of first rollers. The inner flange comprises a coaxial flange inner ring and a first flange plate. The outer flange comprises a flange outer ring, which is sleeved on the outer side of the flange inner ring. Along the axial direction of the wheel hub bearing, the end of the flange outer ring facing the inner flange is opposite to the first flange plate. The plurality of first rollers are arranged between the first flange plate and the flange outer ring and are arranged along the circumferential direction of the first flange plate.

[0007] According to the above technical means, when the wheel hub bearing of the vehicle is subjected to lateral impact, the first roller can be used to bear the lateral impact force, which improves the lateral impact resistance of the wheel hub bearing and reduces or avoids the situation that the wheel hub bearing produces abnormal noise. At the same time, the first roller can avoid rotational jamming between the inner flange and the outer flange of the wheel hub bearing, thereby avoiding driving safety risks caused by the wheel hub bearing. In this way, the wheel hub bearing can consider both its own lateral impact resistance and the driving safety of the vehicle.

[0008] In a possible implementation, the first flange is provided with a first raceway, the flange outer ring is provided with a second raceway opposite to the first raceway in the axial direction of the hub bearing, and the plurality of first rollers are arranged in the first raceway and the second raceway.

[0009] According to the above technical means, the design of the first raceway and the second raceway makes the contact area between the rollers and the first flange and the flange outer ring more uniform, reduces local stress concentration, reduces friction loss, and can better absorb and disperse external impact force, avoiding damage to the rollers caused by instantaneous impact, thereby improving the impact resistance of the bearing.

[0010] In a possible implementation, the plurality of first rollers and the first raceway and the second raceway are all in interference fit.

[0011] According to the above technical means, the lateral impact resistance of the hub bearing and the overall rigidity can be further improved, and the rolling resistance generated by the rolling of the first rollers can be avoided, which is conducive to reducing the energy consumption of the vehicle.

[0012] In a possible implementation, the hub bearing further comprises a sealing assembly, which is located on the outer circumferential side of the plurality of first rollers in the radial direction of the hub bearing and is used to seal the first flange and the flange outer ring.

[0013] According to the above technical means, the sealing assembly can effectively prevent dust, moisture and other pollutants from the outside from entering the hub bearing, and prevent the leakage of internal lubricants.

[0014] In a possible implementation, the sealing assembly comprises a first sealing skeleton, a second sealing skeleton and a sealing lip, the first sealing skeleton is arranged on the first flange, and the second sealing skeleton is arranged on the flange outer ring; in the axial direction of the hub bearing, the sealing lip abuts between the first sealing skeleton and the second skeleton.

[0015] According to the above technical means, in the assembly process of the hub bearing, the first sealing skeleton can be installed on the first flange, the second sealing skeleton can be installed on the flange outer ring, and then the inner flange and the outer flange can be assembled, which can reduce the installation difficulty of the sealing assembly, and also helps to ensure the close fit between the sealing lip and the two sealing skeletons, thereby improving the overall sealing effect.

[0016] In a possible implementation, in the axial direction of the hub bearing, the second sealing skeleton comprises a first part and a second part connected to each other, the first part is connected to the flange outer ring and opposite to the first sealing skeleton, and the second part is located on the outer circumferential side of the first sealing skeleton in the radial direction of the hub bearing; an end face of the first sealing skeleton facing the flange outer ring is a first end face, an end face of the first part facing the first flange is a second end face, and the sealing lip abuts the first end face and the second end face.

[0017] According to the above technical means, the structure of the first part and the second part of the first sealing framework is conducive to further improving the sealing effect of the sealing assembly.

[0018] In a possible implementation, the sealing assembly further comprises a plurality of sealing strips, along the radial direction of the hub bearing, the side of the first sealing framework away from the first roller is a first side, the side of the second part towards the first roller is a second side, the first side and the second side are opposite, part of the plurality of sealing strips is arranged on the first side and spaced apart from the second side, part of the plurality of sealing strips is arranged on the second side and spaced apart from the first side; along the axial direction of the hub bearing, part of the plurality of sealing strips arranged on the first side and part of the plurality of sealing strips arranged on the second side are staggered.

[0019] According to the above technical means, the plurality of sealing strips are staggered along the axial direction of the hub bearing to form a sealing labyrinth between the first flange plate and the flange outer ring, and the sealing strips are spaced apart from the first side and the second side to effectively reduce the frictional rotational resistance, thereby facilitating the reduction of the rotational resistance of the hub bearing.

[0020] In a possible implementation, the sealing lip is arranged on the second sealing framework.

[0021] According to the above technical means, it is helpful to ensure that the sealing lip is in close contact with the first end surface of the first sealing framework, thereby improving the reliability and consistency of the sealing.

[0022] In a possible implementation, the number of sealing lips is one.

[0023] According to the above technical means, compared with multiple sealing lips, a single sealing lip reduces the contact area with the first flange plate, thereby reducing friction loss, which is conducive to improving the working efficiency of the hub bearing and prolonging its service life.

[0024] In a possible implementation, the hub bearing further comprises a plurality of second rollers, the flange inner ring is provided with at least one third raceway, the flange inner ring is provided with a fourth raceway opposite to the at least one third raceway, and the plurality of second rollers are arranged in the at least one third raceway and the fourth raceway; the arrangement contact angle of the plurality of second rollers is greater than or equal to 25° and less than or equal to 35°.

[0025] According to the technical means, if the arrangement contact angle of the second roller is less than 25°, the lateral impact resistance of the hub bearing is poor, and even if the first roller acts together, the lateral impact resistance of the hub bearing cannot be met; if the arrangement contact angle of the second roller is greater than 35°, the radial bearing capacity of the hub bearing is poor, and the service life of the hub bearing is short. By arranging the arrangement contact angle of the second roller to be greater than or equal to 25° and less than or equal to 35°, under the joint action of the first roller and the second roller, the lateral impact resistance of the hub bearing is met, and the radial bearing capacity is also good, thereby prolonging the service life of the hub bearing.

[0026] According to the second aspect of the present application, the present application provides a vehicle comprising the hub bearing.

[0027] According to the technical means, the problem that the hub bearing cannot simultaneously consider the impact resistance and the driving safety of the vehicle is effectively solved.

[0028] The beneficial effects of the present application are as follows:

[0029] (1) The hub bearing can simultaneously consider the lateral impact resistance and the driving safety of the vehicle.

[0030] (2) The sealing assembly can effectively prevent dust, water and other pollutants from entering the hub bearing, and prevent the leakage of internal lubricants, and also reduce the rotation resistance of the hub bearing.

[0031] (3) The hub bearing can simultaneously consider the lateral impact resistance and the driving safety of the vehicle.

[0032] It should be noted that the technical effects brought by the second aspect implementation mode can refer to the technical effects brought by the corresponding implementation mode in the first aspect, which will not be repeated here.

[0033] 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 DRAWINGS

[0034] Figure 1 A cross-sectional view of a hub bearing is provided for some embodiments of the present application;

[0035] Figure 2 A side view of a hub bearing is provided for some embodiments of the present application;

[0036] Figure 3 For Figure 1a partial enlarged view in the figure;

[0037] Figure 4 a partial sectional view of a hub bearing provided for some embodiments of the present application.

[0038] Reference signs:

[0039] 100, hub bearing;

[0040] 1, first roller;

[0041] 2, second roller;

[0042] 3, inner flange; 31, flange inner ring; 32, first flange plate; 33, first raceway; 34, third raceway;

[0043] 4, outer flange; 41, flange outer ring; 42, second flange plate; 43, second raceway; 44, fourth raceway;

[0044] 5, sealing assembly; 51, first sealing backbone; 511, first part; 512, second part; 52, second sealing backbone; 53, sealing lip; 54, sealing strip; 55, sealing labyrinth; 56, first end face; 57, second end face; 58, first side face; 59, second side face. DETAILED DESCRIPTION

[0045] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0046] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0047] In some embodiments, the embodiments of the present application provide a vehicle. In the embodiments of the present application, the specific type of the vehicle is not specifically limited, for example, the vehicle provided by the embodiments of the present application can be an electric vehicle, a hybrid vehicle or a solar vehicle, etc. Meanwhile, the vehicle provided by the embodiments of the present application can also be a vehicle in different forms. For example, the vehicle provided by the embodiments of the present application can be a sedan, a sport utility vehicle (SUV) or a multi-Purpose Vehicles (MPV).

[0048] In some embodiments, the vehicle includes a hub bearing, which needs to be able to bear the weight of the vehicle itself and the load during the actual application of the vehicle, whether the vehicle is straight or turning, the hub bearing needs to ensure that the wheel can rotate freely and reduce the friction resistance as much as possible.

[0049] In some embodiments, the hub bearing of the vehicle is connected to the wheel and the suspension system. Specifically, the wheel bolt passes through the hole on the hub and is fixed to the hub bearing or the flange thereof, realizing the rigid connection between the wheel and the vehicle. The hub bearing is connected to the vehicle chassis through the knuckle or the suspension arm in the suspension system (such as Macpherson, double wishbone, etc.), so that the wheel moves up and down during driving to adapt to the road unevenness, while maintaining the correct positioning angle.

[0050] In order to improve the lateral impact resistance of the hub bearing, some embodiments of the present application provide a hub bearing. Next, a hub bearing provided by some embodiments of the present application will be described with reference to Figures 1-4 A hub bearing provided by some embodiments of the present application will be described.

[0051] In some embodiments, with reference to Figures 1-2 The embodiments of the present application provide a hub bearing 100, which includes an inner flange 3, a flange and a plurality of first rollers 1. The inner flange 3 includes a flange inner ring 31 and a first flange plate 32 coaxially arranged, and the outer flange 4 includes a flange outer ring 41, which is sleeved on the outer side of the flange inner ring 31. Along the axial direction of the hub bearing 100, the end of the flange outer ring 41 opposite to the inner flange 3 is opposite to the first flange plate 32. The plurality of first rollers 1 are arranged between the first flange plate 32 and the flange outer ring 41, and are arranged along the circumferential direction of the first flange plate 32.

[0052] The wheel of the vehicle is fixedly connected to the first flange plate 32 by a bolt, so that the wheel of the vehicle is fixedly connected to the hub bearing 100.

[0053] When the vehicle is turning or encounters a lateral impact or a lateral driving on the shoulder, etc., the hub bearing 100 of the vehicle will be subjected to a lateral impact from the wheel, and the lateral impact force is first transmitted to the inner flange 3 via the wheel. The first roller 1 is arranged between the first flange plate 32 and the flange outer ring 41, so that the first roller 1 can bear the lateral impact force from the first flange plate 32, thereby improving the lateral impact resistance of the hub bearing 100 and the overall lateral rigidity of the hub bearing 100. This can also reduce the lateral impact force transmitted to the flange inner ring 31, thereby avoiding indentation of the raceway between the flange inner ring 31 and the flange outer ring 41, which can reduce or avoid the generation of an abnormal noise during high-speed rotation of the hub bearing 100, thereby improving the NVH performance of the vehicle.

[0054] Optionally, the outer flange 4 further comprises a second flange plate 42 coaxially arranged with the flange outer ring 41, and the knuckle in the suspension system is fixedly connected to the second flange plate 42 by bolts, which helps to ensure that the wheel can be stably connected to the suspension system of the vehicle and can freely rotate as needed.

[0055] Optionally, the first roller 1 can be a ball, for example, the first roller 1 is a steel ball.

[0056] Optionally, the first roller 1 of the hub bearing 100 is filled with a lubricant, such as lubricating oil or grease.

[0057] On this basis, when the hub bearing 100 of the vehicle is subjected to a lateral impact, the first roller 1 can be used to bear the lateral impact force, thereby improving the lateral impact resistance of the hub bearing 100 and reducing or avoiding the generation of an abnormal noise by the hub bearing 100; at the same time, the first roller 1 can avoid rotational jamming between the inner flange 3 and the outer flange 4 of the hub bearing 100, thereby avoiding the risk of driving safety caused by the hub bearing 100, so that the hub bearing 100 can balance the lateral impact resistance and the driving safety of the vehicle.

[0058] In some optional embodiments, referring to Figure 1 , the hub bearing 100 further comprises a retainer arranged between adjacent two first rollers 1 along the axial direction of the first flange plate 32. The retainer can ensure that the first rollers 1 maintain a proper distance from each other, preventing them from directly contacting and rubbing against each other. This can reduce the wear between the rolling elements, thereby prolonging the service life of the hub bearing 100.

[0059] It should be noted that the diameter and number of the first rollers 1 can be configured according to the specific type and working condition of the vehicle, and the present application does not make specific limitations thereto.

[0060] In some embodiments, referring to Figure 1, the first flange plate 32 is provided with a first raceway 33, the flange outer ring 41 is provided with a second raceway 43 opposite to the first raceway 33 in the axial direction of the hub bearing 100, and the plurality of first rollers 1 are arranged in the first raceway 33 and the second raceway 43.

[0061] In this way, the first raceway 33 and the second raceway 43 are opposite in the axial direction of the hub bearing 100, so that the first rollers 1 arranged in the first raceway 33 and the second raceway 43 can effectively withstand the lateral impact force.

[0062] In this way, the first raceway 33 and the second raceway 43 are both formed as arc-shaped raceways.

[0063] On this basis, the design of the first raceway 33 and the second raceway 43 makes the contact area between the rollers and the first flange plate 32 and the flange outer ring 41 more uniform, reduces the local stress concentration phenomenon, reduces the friction loss, and can better absorb and disperse external impact force, avoid damage to the rollers due to instantaneous impact, and thus improve the impact resistance of the bearing.

[0064] In addition, the first raceway 33 and the second raceway 43 can also provide a better distribution path for lubricating oil or grease, so that the lubricant can more uniformly cover the first rollers 1 and the raceway surface. Good lubrication conditions can further reduce friction and heat accumulation, thereby improving the working efficiency and reliability of the hub bearing 100.

[0065] In some embodiments, the plurality of first rollers 1 and the first raceway 33 and the second raceway 43 are all interference fit. Alternatively, the plurality of first rollers 1 and the first raceway 33 and the second raceway 43 are inspected with 0 clearance and small negative clearance to resist the load from the lateral direction of the hub bearing 100, thereby improving the overall rigidity of the hub bearing 100 in the lateral direction.

[0066] On this basis, the lateral impact resistance of the hub bearing 100 and the overall rigidity can be further improved, and the rolling resistance generated by the rolling of the first rollers 1 can be avoided, which is conducive to reducing the energy consumption of the vehicle.

[0067] In some embodiments, referring to Figure 1 and Figure 3 , the hub bearing 100 further comprises a sealing assembly 5, which is located on the outer circumferential side of the plurality of first rollers 1 in the radial direction of the hub bearing 100, and is used to seal the first flange plate 32 and the flange outer ring 41.

[0068] In the hub bearing 100, a gap is formed between the first flange plate 32 and the flange outer ring 41, and during the use of the vehicle, dust, water and other contaminants from the outside enter the interior of the hub bearing 100. In the embodiments of the present application, the arrangement of the first rollers 1 and the filling of lubricants and the like can effectively block part of the dust, water and other contaminants from entering the interior of the hub bearing 100.

[0069] On this basis, the sealing assembly 5 can further effectively prevent dust, water and other contaminants from the outside from entering the interior of the hub bearing 100, and can also prevent the leakage of internal lubricants and the like.

[0070] In some embodiments, referring to Figure 1 and Figure 3 , the sealing assembly 5 comprises a first sealing skeleton 51 and a second sealing skeleton 52 and a sealing lip 53, the first sealing skeleton 51 is arranged on the first flange plate 32, and the second sealing skeleton 52 is arranged on the flange outer ring 41; along the axial direction of the hub bearing 100, the sealing lip 53 abuts between the first sealing skeleton 51 and the second skeleton.

[0071] Among them, the first sealing skeleton 51 and the second sealing skeleton 52 can provide effective support for the structure of the sealing lip 53 and the like.

[0072] Optionally, the first sealing skeleton 51 and the second sealing skeleton 52 can be made of metal material, for example, the first sealing skeleton 51 and the second sealing skeleton 52 can be made of stainless steel, so as to have sufficient structural strength.

[0073] Optionally, the sealing lip 53 can be made of elastic material, for example, the sealing lip 53 can be made of rubber material.

[0074] Optionally, the sealing lip 53 can be connected to the first sealing skeleton 51 and abut with the second sealing skeleton 52, or the sealing lip 53 can be connected to the second sealing skeleton 52 and abut with the first sealing skeleton 51.

[0075] Optionally, the number of sealing lips 53 can be one or more.

[0076] On this basis, during the assembly of the hub bearing 100, the first sealing skeleton 51 can be pre-installed on the first flange plate 32, and the second sealing skeleton 52 can be pre-installed on the flange outer ring 41, and then the inner flange 3 and the outer flange 4 are assembled and combined, which can reduce the installation difficulty of the sealing assembly 5, and also helps to ensure the close fit between the subsequent sealing lip 53 and the two sealing skeletons, thereby improving the overall sealing effect.

[0077] In some embodiments, referring to Figure 1 and Figure 3The second sealing skeleton 52 comprises a first portion 511 and a second portion 512 connected to each other along the axial direction of the hub bearing 100, the first portion 511 is connected to the flange outer ring 41 and opposite to the first sealing skeleton 51, and the second portion 512 is located at the outer circumferential side of the first sealing skeleton 51 along the radial direction of the hub bearing 100. The end face of the first sealing skeleton 51 facing the flange outer ring 41 is a first end face 56, and the end face of the first portion 511 facing the first flange plate 32 is a second end face 57, and the sealing lip 53 abuts against the first end face 56 and the second end face 57.

[0078] Optionally, the first portion 511 can comprise a portion bent in a direction away from the flange outer ring 41 along the radial direction of the hub bearing 100, so as to avoid the first sealing skeleton 51.

[0079] On this basis, the structure of the first portion 511 and the second portion 512 of the first sealing skeleton 51 is conducive to further improving the sealing effect of the sealing assembly 5.

[0080] In some embodiments, referring to Figure 1 and Figure 3 , the sealing assembly 5 further comprises a plurality of sealing strips 54, along the radial direction of the hub bearing 100, the side of the plurality of sealing strips 54 away from the first roller 1 on the first sealing skeleton 51 is a first side 58, and the side of the plurality of sealing strips 54 facing the first roller 1 on the second portion 512 is a second side 59, the first side 58 and the second side 59 are opposite to each other, part of the plurality of sealing strips 54 are arranged on the first side 58 and spaced apart from the second side 59, and part of the plurality of sealing strips 54 are arranged on the second side 59 and spaced apart from the first side 58; along the axial direction of the hub bearing 100, part of the plurality of sealing strips 54 arranged on the first side 58 and part of the plurality of sealing strips 54 arranged on the second side 59 are arranged staggered.

[0081] Optionally, the lengths of the plurality of sealing strips 54 can be the same or different, which is not specifically limited in the present application. The length of the sealing strip 54 arranged at one end of the second side 59 away from the first portion 511 can cover the interval between the second portion 512 and the first sealing skeleton 51, so as to improve the sealing effect.

[0082] On this basis, the plurality of sealing strips 54 are arranged staggered along the axial direction of the hub bearing 100 so that the sealing labyrinth 55 can be formed between the first flange plate 32 and the flange outer ring 41, and the sealing strips 54 are spaced apart from the first side 58 and the second side 59, which can effectively reduce the frictional rotational resistance caused thereby, thereby being conducive to reducing the rotational resistance of the hub bearing 100.

[0083] In some embodiments, referring to Figure 3 , the sealing lip 53 is arranged on the second sealing skeleton 52. For example, the sealing lip 53 is arranged on the second end face 57 of the first portion 511 of the second sealing skeleton 52.

[0084] On this basis, it is helpful to ensure that the sealing lip 53 and the first end face 56 of the first sealing skeleton 51 form a close contact, thereby improving the reliability and consistency of the seal.

[0085] In some embodiments, referring to Figure 1 and Figure 3 , the number of sealing lips 53 is one. Since the arrangement of the first roller 1 and the filling of lubricants and the like can form a certain blocking effect on the entry of part of the dust, moisture and other contaminants into the hub bearing 100, one sealing lip 53 can be selected to play a further sealing role.

[0086] On this basis, compared with multiple sealing lips 53, a single sealing lip 53 reduces the contact area with the first flange plate 32, thereby reducing friction loss, helping to improve the working efficiency of the hub bearing 100, and being conducive to prolonging its service life.

[0087] For example, the assembly process of the hub bearing 100 can include the following steps:

[0088] First, the first sealing skeleton 51 is pre-installed on the first flange plate 32, and the second sealing skeleton 52 is pre-installed on the flange outer ring 41; then, the inner flange 3 and the outer flange 4 are assembled together, so that the sealing lip 53 provided on the second sealing skeleton 52 abuts against the first end face 56 of the first sealing skeleton 51, and forms a sealing labyrinth 55 between the first side face 58 and the second side face 59.

[0089] Referring to Figure 1 and Figure 4 , in some embodiments, the hub bearing 100 further comprises a plurality of second rollers 2, the flange inner ring 31 is provided with at least one third raceway 34, the flange outer ring 41 is provided with a fourth raceway 44 opposite to the at least one third raceway 34, and the plurality of second rollers 2 are arranged in the at least one third raceway 34 and the fourth raceway 44. The arrangement contact angle of the plurality of second rollers 2 is β, which is greater than or equal to 25° and less than or equal to 35°. On this basis, this can improve the radial load capacity of the bearing.

[0090] For example, the arrangement contact angle can be 25°, 30° or 35°, etc.

[0091] Among them, the second roller 2 is arranged along the circumference of the flange inner ring 31.

[0092] Optionally, the flange inner ring 31 is provided with at least one third raceway 34, which can include the following cases: for example, the flange inner ring 31 is provided with one third raceway 34; for another example, the flange inner ring 31 is provided with a plurality of third raceways 34, such as two third raceways 34 arranged along the axial direction of the flange inner ring 31. Correspondingly, the fourth raceway 44 and the third raceway 34 have the same number.

[0093] When the third raceway 34 is two, the second rollers 2 can be divided into two groups, and the two groups of second rollers 2 correspond to the two third raceways 34 respectively. The number of the two groups of second rollers 2 can be the same or different, and the diameters of the two groups of second rollers 2 can be the same or different, which can be configured according to the actual working condition of the vehicle.

[0094] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hub bearing (100), characterized in that The application relates to a hub bearing (100) comprising: an inner flange (3) comprising a flange inner ring (31) and a first flange plate (32) coaxially arranged; an outer flange (4) comprising a flange outer ring (41) sleeved on the outer side of the flange inner ring (31) along the axial direction of the hub bearing (100), and opposite to the end of the inner flange (3) and the first flange plate (32); a plurality of first rollers (1) arranged between the first flange plate (32) and the flange outer ring (41) and arranged along the circumferential direction of the first flange plate (32).

2. The hub bearing (100) according to claim 1, characterized in that The first flange plate (32) is provided with a first raceway (33), and the end of the flange outer ring (41) towards the inner flange (3) is provided with a second raceway (43) opposite to the first raceway (33) along the axial direction of the hub bearing (100), and the plurality of first rollers (1) are arranged in the first raceway (33) and the second raceway (43).

3. The hub bearing (100) according to claim 2, characterized in that The plurality of first rollers (1) and the first raceway (33) and the second raceway (43) are all in interference fit.

4. The hub bearing (100) according to claim 1, characterized in that The hub bearing (100) further comprises a sealing assembly (5) located on the outer circumferential side of the plurality of first rollers (1) along the radial direction of the hub bearing (100) and used for sealing the first flange plate (32) and the flange outer ring (41).

5. The hub bearing (100) according to claim 4, characterized in that The sealing assembly (5) comprises a first sealing skeleton (51), a second sealing skeleton (52) and a sealing lip (53), the first sealing skeleton (51) is arranged on the first flange plate (32), and the second sealing skeleton (52) is arranged on the flange outer ring (41); The sealing lip (53) is abutted between the first sealing skeleton (51) and the second sealing skeleton along the axial direction of the hub bearing (100).

6. The hub bearing (100) according to claim 5, characterized in that The second sealing skeleton (52) comprises a first part (511) and a second part (512) connected together along the axial direction of the hub bearing (100), the first part (511) is connected to the flange outer ring (41) and opposite to the first sealing skeleton (51), and the second part (512) is located on the outer circumferential side of the first sealing skeleton (51) along the radial direction of the hub bearing (100); The end face of the first sealing skeleton (51) towards the flange outer ring (41) is a first end face (56), the end face of the first part (511) towards the first flange plate (32) is a second end face (57), and the sealing lip (53) is abutted to the first end face (56) and the second end face (57).

7. The hub bearing (100) according to claim 6, characterized in that The sealing assembly (5) further comprises a plurality of sealing strips (54), the plurality of sealing strips (54) are arranged on the first side (58) of the first sealing frame (51) away from the first roller (1) in the radial direction of the hub bearing (100), the second part (512) is arranged on the second side (59) of the first sealing frame (51) facing the first roller (1), the first side (58) and the second side (59) are opposite, part of the plurality of sealing strips (54) are arranged on the first side (58) and spaced apart from the second side (59), part of the plurality of sealing strips (54) are arranged on the second side (59) and spaced apart from the first side (58); In the axial direction of the hub bearing (100), part of the plurality of sealing strips (54) arranged on the first side (58) and part of the plurality of sealing strips (54) arranged on the second side (59) are staggered.

8. The hub bearing (100) according to claim 5, characterized in that The sealing lip (53) is arranged on the second sealing frame (52); and / or, the number of the sealing lip (53) is one.

9. The hub bearing (100) according to any one of claims 1 to 8, characterized in that The hub bearing (100) further comprises a plurality of second rollers (2), the flange inner ring (31) is provided with at least one third raceway (34), the flange inner ring (31) is provided with a fourth raceway (44) opposite to the at least one third raceway (34), and the plurality of second rollers (2) are arranged in the at least one third raceway (34) and the fourth raceway (44); The arrangement contact angle of the plurality of second rollers (2) is greater than or equal to 25° and less than or equal to 35°.

10. A vehicle characterized by comprising: Comprise: The hub bearing (100) according to any one of claims 1-9.

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