Wheel hub bearing structure and vehicle

Abstract

This application relates to the field of vehicle chassis technology, and provides a wheel hub bearing structure and a vehicle. The wheel hub bearing structure includes: an inner flange, an inner ring fitted onto the inner flange; rolling elements and an outer flange, the outer flange fitted outside the inner flange, forming a space between the outer flange and the inner ring and inner flange to accommodate the rolling elements; a magnetic element, the inner circumference of the outer flange having a groove, the magnetic element being disposed within the groove; and a first sealing assembly, sealingly disposed between the inner ring and the outer flange, and pressing against the inner circumference of the outer flange to seal the magnetic element. By providing a groove on the inner circumference of the outer flange, the magnetic element being disposed within the groove, and being covered and sealed by the first sealing assembly disposed between the inner ring and the outer flange, a concealed design of the magnetic element is achieved. Compared to existing technologies, the magnetic element is protected between the first sealing assembly and the outer flange, rather than being exposed, improving the operating environment of the magnetic element and reducing or even eliminating the influence of external impurities on the magnetic element.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and in particular to a wheel hub bearing structure and a vehicle. Background Technology

[0002] Currently, the main structure of vehicle wheel hub bearings consists of an inner flange, an outer flange, and an inner ring. Rolling elements and a cage are assembled on the inner flange, followed by the outer flange. The inner flange and inner ring are nested together, and the rolling elements are sealed by the inner flange and inner ring to form a single unit. The space containing the rolling elements is filled with grease to ensure lubrication. Sealing rings are installed between the inner and outer flanges, as well as at the outer flange and inner ring, to prevent external impurities from entering and causing abnormal noise.

[0003] To detect wheel speed, a magnetic seal is usually used at the connection between the outer flange and the inner ring. The magnetic seal has magnetic poles, and the wheel speed is obtained by capturing the changes of the magnetic poles during rotation by a wheel speed sensor fixed on the stationary steering knuckle. However, the magnetic poles are exposed and lack protection, making them susceptible to external impurities such as sand and mud, which can affect the collection of wheel speed data. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a wheel hub bearing structure and vehicle, so as to achieve sealing of magnetic components through the cooperation of a first sealing component and an outer flange, realize the hidden design of magnetic components, and avoid the influence of external impurities on magnetic components.

[0005] The first aspect of this application provides a hub bearing structure, including: Inner flange The inner ring is fitted onto the inner flange. Rolling element and outer flange, wherein the outer flange is sleeved on the outside of the inner flange and forms a space for accommodating the rolling element between the outer flange and the inner ring and the inner flange; A magnetic component is provided in the groove on the inner circumference of the outer flange, and the magnetic component is disposed in the groove. The first sealing assembly is disposed between the inner ring and the outer flange, and presses against the inner circumference of the outer flange to seal the magnetic component.

[0006] The hub bearing structure provided in this application embodiment has a groove on the inner circumference of the outer flange, in which a magnetic component is disposed. The magnetic component is covered and sealed by a first sealing component disposed between the inner ring and the outer flange. This achieves a hidden design for the magnetic component. Compared with the prior art, the magnetic component is protected between the first sealing component and the outer flange, rather than being exposed. This improves the survival environment of the magnetic component, reduces the probability of the magnetic component being affected by external impurities, and even avoids the magnetic component being affected by external impurities.

[0007] In some embodiments, the first sealing assembly includes an upper sealing ring, the upper sealing ring including an upper skeleton and a flexible upper sealing body disposed outside the upper skeleton, the upper skeleton being interference-fitted to the outer flange, and the upper sealing body pressing against the inner circumference of the outer flange to seal the magnetic element.

[0008] By interfering with the outer flange through the upper skeleton, the upper sealing ring is fixed, and the upper sealing body presses against the outer circumference of the outer flange to achieve a covering seal on the magnetic component. This allows the magnetic component to be hidden between the upper sealing ring and the outer flange, preventing the magnetic component from being affected by external impurities.

[0009] In some embodiments, the first sealing assembly further includes a lower sealing ring, the lower sealing ring including a lower skeleton and a flexible lower sealing body disposed outside the lower skeleton, the lower skeleton being interference-fitted to the inner ring; The upper sealing body has a plurality of outwardly extending upper sealing teeth, wherein at least one of the upper sealing teeth abuts against the lower skeleton in the radial direction of the inner flange, and at least one of the upper sealing teeth extends radially away from the inner flange and abuts against the lower sealing ring in the axial direction of the inner flange.

[0010] The upper sealing ring is located on the outer flange, and the lower sealing ring is located on the inner flange. The upper sealing teeth of the upper sealing ring press against the lower skeleton radially on the inner flange, thus achieving a seal between the upper and lower sealing rings. The upper sealing teeth also press against the lower sealing ring axially on the inner flange, thus forming multiple seals between the upper and lower sealing rings. This effectively isolates external impurities and prevents them from entering the space where the rolling elements are located.

[0011] In some embodiments, both the inner flange and the inner ring have a receiving groove for accommodating the rolling element, and the height of the sidewall of the receiving groove on the outer side of the rolling element is greater than or equal to the radius of the rolling element.

[0012] The rolling element is positioned between the inner flange, outer flange, and inner ring. Therefore, the inner ring and inner flange need to limit the rolling element in the axial direction of the inner flange to prevent the rolling element from coming off. Thus, setting the height of the side wall of the receiving groove on the outside of the rolling element to be greater than or equal to the radius of the rolling element can effectively block the rolling element and prevent it from coming off.

[0013] In some embodiments, a second sealing assembly is further included, which is disposed between the outer flange and the inner flange, and the first sealing assembly and the second sealing assembly are respectively located on both sides of the outer flange in the axial direction.

[0014] By installing a second sealing assembly between the outer and inner flanges, a seal can be achieved between the outer and inner flanges, preventing external impurities from entering the space where the rolling elements are located and causing abnormal noise.

[0015] In some embodiments, the second sealing assembly includes an outer sealing ring and an inner sealing ring, the inner sealing ring being mounted on the outer flange and the outer sealing ring being mounted on the inner flange and covering the outside of the inner sealing ring.

[0016] The aforementioned second sealing assembly includes two sealing rings, one inside the other. The outer and inner sealing rings work together to seal the gap between the outer and inner flanges, preventing external impurities from entering the space where the rolling elements are located.

[0017] In some embodiments, the inner sealing ring includes an inner skeleton and a flexible inner sealing body disposed outside the inner skeleton, the inner skeleton being mounted on the outer flange; The inner sealing body has a plurality of outwardly extending inner sealing teeth, wherein at least one of the inner sealing teeth abuts against the outer sealing ring in the radial direction of the inner flange, and at least one of the inner sealing teeth abuts against the outer sealing ring in the axial direction of the inner flange.

[0018] In some embodiments, the inner flange further has a shoulder, and the outer sealing ring abuts against the shoulder in the axial direction of the inner flange.

[0019] By setting multiple internal sealing teeth, at least one internal sealing tooth presses against the outer sealing ring radially on the inner flange, and at least one internal sealing tooth presses against the outer sealing ring axially on the inner flange. In this way, the internal sealing teeth form multiple seals between the inner and outer sealing rings, thereby preventing external impurities from entering.

[0020] In some embodiments, the inner ring is interference-fitted to the inner flange; And / or, the hardness HRC of the outer circumference of the inner flange and the inner circumference of the outer flange are both 60-64, and the hardness HRC of the inner ring is 60-64.

[0021] By using an interference fit between the inner ring and the inner flange, compared to existing methods, there is no need to set a flange structure on the inner flange to limit the inner ring. This eliminates the need to consider the toughness of the inner flange, and can improve the hardness and strength of the inner flange, thereby enabling the inner flange to withstand high-intensity rolling element impacts.

[0022] By setting the hardness of the flange, outer flange, and inner ring to HRC 60-64, all three components can withstand high-intensity rolling element impacts.

[0023] A second aspect of this application provides a vehicle including a hub bearing structure as described in any of the preceding claims.

[0024] The vehicle provided in this application has the beneficial effects of the wheel hub bearing structure described in any of the above claims because it includes the wheel hub bearing structure described in any of the above claims. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the hub bearing structure provided in the embodiments of this application; Figure 2 for Figure 1 Side view of the hub bearing structure in the image; Figure 3 for Figure 2 Schematic sectional view along the middle AA direction; Figure 4 for Figure 3 A partial structural diagram; Figure 5 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 6 for Figure 3 A magnified schematic diagram of the local structure at point B.

[0028] Among them, 1 is the inner flange; 11 is the shaft shoulder; 2. Inner circle; 3. Rolling elements; 4. Outer flange; 4a. Groove; 5. Magnetic components; 6. First sealing assembly; 61. Upper sealing ring; 611. Upper skeleton; 612. Upper sealing body; 612a. Upper sealing tooth; 62. Lower sealing ring; 621. Lower skeleton; 622. Lower sealing body; 7. Second sealing assembly; 71. Inner sealing ring; 711. Inner skeleton; 712. Inner sealing body; 712a. Inner sealing tooth; 72. Outer sealing ring; 72a. First part; 72b. Second part; 72c. Third part; 72d. Fourth part; 72e. Fifth part; 8. Cage. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0031] Currently, the main structure of vehicle wheel hub bearings consists of an inner flange, an outer flange, and an inner ring. Rolling elements and a cage are assembled on the inner flange, followed by the outer flange. The inner flange and inner ring are nested together, and the rolling elements are sealed by the inner flange and inner ring to form a single unit. The space containing the rolling elements is filled with grease to ensure lubrication. Sealing rings are installed between the inner and outer flanges, as well as between the outer flange and the inner ring, to prevent external impurities from entering and causing abnormal noise.

[0032] Among them, the magnetic sealing rings used for wheel speed detection often adopt a structure that combines with conventional sealing rings. The magnetic sealing rings work together to seal and prevent dust. At the same time, the magnetic sealing rings work with wheel speed sensors to detect wheel speed. The wheel speed sensors are fixed on the stationary steering knuckle, and the magnetic sealing rings are equipped with magnetic poles. As the magnetic sealing rings rotate, the wheel speed sensors generate an induced electromotive force through the change of the magnetic field, thus forming an alternating current.

[0033] For ease of inspection, the magnetic poles of the magnetic ring are usually exposed, which leaves the magnetic poles unprotected and makes them susceptible to the adhesion of external impurities such as sand and mud, thus reducing the accuracy of wheel speed detection.

[0034] Based on this, embodiments of this application provide a wheel hub bearing structure and vehicle, which achieves a concealed design of the magnetic component by providing a groove for accommodating the magnetic component on the inner circumference of the outer flange, with the magnetic component disposed in the groove, and sealing the magnetic component by a first sealing component pressing against the inner circumference of the outer flange, thereby improving the survival environment of the magnetic component and preventing the magnetic component from being affected by external impurities.

[0035] Reference Figures 1 to 6 As shown, some embodiments of this application provide a hub bearing structure, including an inner flange 1, an inner ring 2, rolling elements 3, an outer flange 4, a magnetic element 5, and a first sealing assembly 6.

[0036] The inner ring 2 is fitted onto the inner flange 1. The outer flange 4 is fitted onto the outside of the inner flange 1, forming a space between the outer flange 4 and the inner ring 2 to accommodate the rolling element 3. A groove 4a is provided on the inner circumference of the outer flange 4, and the magnetic element 5 is disposed in the groove 4a. The first sealing assembly 6 is disposed between the inner ring 2 and the outer flange 4, and presses against the inner circumference of the outer flange 4 to seal the magnetic element 5.

[0037] Understandably, the outer flange 4 is located outside the inner flange 1, and the inner ring 2 is fitted onto the inner flange 1. Thus, the outer flange 4, the inner flange 1, and the inner ring 2 enclose a space for accommodating the rolling elements 3. Two sets of rolling elements 3 are provided: one set is sandwiched between the inner flange 1 and the outer flange 4, and the other set is sandwiched between the outer flange 4 and the inner ring 2. Both sets of rolling elements 3 cooperate with the cage 8.

[0038] The hub bearing structure provided in this application embodiment has a groove 4a on the inner circumference of the outer flange 4, and the magnetic component 5 is disposed in the groove 4a. The magnetic component 5 is covered and sealed by the first sealing component 6 disposed between the inner ring 2 and the outer flange 4. This achieves a hidden design for the magnetic component 5. Compared with the prior art, the magnetic component 5 is protected between the first sealing component 6 and the outer flange 4, rather than being exposed. This can improve the survival environment of the magnetic component 5, reduce the probability of the magnetic component 5 being affected by external impurities, and even avoid the magnetic component 5 being affected by external impurities.

[0039] In some embodiments, refer to Figure 3 The inner ring 2 is interference-fitted to the inner flange 1. By using the interference fit between the inner ring 2 and the inner flange 1, compared with the existing method, there is no need to set a flange structure on the inner flange 1 to limit the inner ring 2. Thus, there is no need to consider the toughness of the inner flange 1, and the hardness and strength of the inner flange 1 can be improved, so that the inner flange 1 can withstand the impact of high-intensity rolling elements 3.

[0040] Furthermore, the hardness HRC of the outer circumferential surface of the inner flange 1 and the inner circumferential surface of the outer flange 4 are both 60-64, and the surface hardness HRC of the inner ring 2 is also 60-64. This ensures that the surface hardness HRC of the outer circumferential surface of the inner flange 1, the inner circumferential surface of the outer flange 4, and the inner ring 2 all reach 60-64, thereby improving the hardness and strength of the inner flange 1, the outer flange 4, and the inner ring 2. This allows all three flanges to withstand the impact of high-intensity rolling elements 3.

[0041] The outer circumferential surface of inner flange 1 and the inner circumferential surface of outer flange 4 are surface hardened, with a maximum hardened layer thickness of 3.5 mm. Inner ring 2, on the other hand, is entirely hardened.

[0042] In some embodiments, refer to Figure 3Both the inner flange 1 and the inner ring 2 have receiving grooves for accommodating the rolling element 3, and the height of the receiving groove on the side wall outside the rolling element 3 is greater than or equal to the radius of the rolling element 3.

[0043] Understandably, the rolling element 3 is positioned between the inner flange 1, the outer flange 4, and the inner ring 2. Therefore, the inner ring 2 and the inner flange 1 need to limit the rolling element 3 in the axial direction of the inner flange 1 to prevent the rolling element 3 from coming off. Thus, setting the height of the side wall of the receiving groove on the outside of the rolling element 3 to be greater than or equal to the radius of the rolling element 3 can effectively block the rolling element 3 and prevent it from coming off.

[0044] It should be noted that the height of the side wall of the aforementioned receiving groove is defined as the length in the radial direction of the inner flange 1, starting from the lowest point where the rolling element 3 contacts the inner ring 2 or the inner flange 1. This effectively blocks and limits the rolling element 3.

[0045] The sidewall of the aforementioned receiving groove can also be understood as a shoulder for limiting the rolling element 3. The rolling element 3 is located between the shoulder of the inner flange 1 and the shoulder of the inner ring 2 in the axial direction of the inner flange 1.

[0046] In some embodiments, refer to Figures 3 to 6 The first sealing component 6 mentioned above includes an upper sealing ring 61, which includes an upper skeleton 611 and an upper sealing body 612 that is flexible and disposed outside the upper skeleton 611. The upper skeleton 611 is interference-fitted to the outer flange 4, and the upper sealing body 612 is pressed against the inner circumference of the outer flange 4 to seal the magnetic component 5.

[0047] Understandably, by interfering with the outer flange 4 through the upper frame 611, the upper sealing ring 61 is fixed, and by pressing the upper sealing body 612 against the outer periphery of the outer flange 4, the magnetic component 5 is covered and sealed, so that the magnetic component 5 is hidden between the upper sealing ring 61 and the outer flange 4, avoiding the magnetic component 5 from being affected by external impurities.

[0048] The upper sealing body 612 is made of rubber, and is thus integrally vulcanized onto the upper frame 611. The upper frame 611 can be made of metal, which provides high structural strength and facilitates an interference fit between the upper sealing ring 61 and the outer flange 4.

[0049] Reference Figure 5 and Figure 6 The first sealing component 6 further includes a lower sealing ring 62, which includes a lower skeleton 621 and a flexible lower sealing body 622 disposed outside the lower skeleton 621. The lower skeleton 621 is interference-fitted to the inner ring 2.

[0050] The aforementioned upper sealing body 612 has a plurality of outwardly extending upper sealing teeth 612a, wherein at least one upper sealing tooth 612a abuts against the lower skeleton 621 radially on the inner flange 1, and at least one upper sealing tooth 612a extends radially away from the inner flange 1 and abuts against the lower sealing ring 62 axially on the inner flange 1. The axial direction of the inner flange 1 is as follows... Figure 3 The X direction is shown, while the radial direction of the inner flange 1 is as follows. Figure 3 Y direction shown in .

[0051] The lower sealing body 622 is made of rubber, and is thus integrally vulcanized onto the lower skeleton 621. The lower skeleton 621 can be made of metal, which provides high structural strength and facilitates an interference fit between the lower sealing ring 62 and the inner ring 2.

[0052] Understandably, the upper sealing ring 61 is disposed on the outer flange 4, and the lower sealing ring 62 is disposed on the inner ring 2. The upper sealing teeth 612a of the upper sealing ring 61 abut against the lower skeleton 621 in the radial direction of the inner flange 1, thereby achieving a seal between the upper sealing ring 61 and the lower sealing ring 62. The upper sealing teeth 612a abut against the lower sealing ring 62 in the axial direction of the inner flange 1, thus forming multiple seals between the upper sealing ring 61 and the lower sealing ring 62, which can effectively isolate external impurities and prevent external impurities from entering the space where the rolling element 3 is located.

[0053] Furthermore, since the upper sealing tooth 612a extends radially away from the inner flange 1 and presses against the lower sealing ring 62 axially, even when external impurities enter between the upper sealing ring 61 and the lower sealing ring 62, the force exerted by the external impurities on the upper sealing tooth 612a will increase the deformation of the upper sealing tooth 612a, thereby increasing the tightness of the contact between it and the lower sealing ring 62. This can prevent external impurities from penetrating deeper and improve the sealing effect to a certain extent.

[0054] It should be noted that, referring to Figure 5 In the axial direction of the inner flange 1, the lower sealing ring 62 is located on the outer side of the upper sealing tooth 612a of the lower sealing ring 62, which reduces the space occupied by the first sealing assembly 6 in the axial direction of the inner flange 1.

[0055] Specifically, the upper sealing ring 61 comprises a first part and a second part arranged at a first preset angle. The first part is press-fitted with the outer flange 4. The lower sealing ring 62 comprises a third part and a fourth part arranged at a second preset angle. The third part is press-fitted with the inner ring 2, and the fourth part is located outside the second part in the axial direction of the inner flange 1. The first preset angle and the second preset angle can be set to 90°. This arrangement, in conjunction with the upper sealing teeth 612a of the upper sealing ring 61, achieves a labyrinth seal between the upper sealing ring 61 and the lower sealing ring 62, and reduces the space occupied by the first sealing assembly 6 in the axial direction of the inner flange 1.

[0056] Of course, the first and second preset angles mentioned above can also be selected according to actual needs.

[0057] Furthermore, for ease of description, the upper sealing tooth 612a that presses against the lower sealing ring 62 axially on the inner flange 1 is defined as the first upper sealing tooth, and the upper sealing tooth 612a that presses against the lower sealing ring 62 radially on the inner flange 1 is defined as the second upper sealing tooth. The second upper sealing tooth is relatively closer to the inner flange 1 radially than the first sealing tooth. That is, in the multi-seal formation of the upper sealing ring 61 and the lower sealing ring 62, the first upper sealing tooth is the preceding seal, while the second upper sealing tooth is the following seal.

[0058] For example, refer to Figure 5 The first upper sealing tooth is provided in two parts, and the second upper sealing tooth is provided in one part.

[0059] In some embodiments, refer to Figure 3 , Figure 4 and Figure 6 The hub bearing structure also includes a second sealing assembly 7, which is disposed between the outer flange 4 and the inner flange 1, and the first sealing assembly 6 and the second sealing assembly 7 are respectively located on both sides of the outer flange 4 in the axial direction.

[0060] Understandably, by providing a second sealing assembly 7 between the outer flange 4 and the inner flange 1, a seal can be achieved between the outer flange 4 and the inner flange 1, preventing external impurities from entering the space where the rolling element 3 is located and causing abnormal noise.

[0061] Reference Figure 4 and Figure 6 The second sealing assembly 7 includes an outer sealing ring 72 and an inner sealing ring 71. The inner sealing ring 71 is installed on the outer flange 4, and the outer sealing ring 72 is installed on the inner flange 1 and covers the outside of the inner sealing ring 71.

[0062] In other words, the second sealing assembly 7 includes two sealing rings, which are arranged inside and outside the other. In this way, the outer sealing ring 72 and the inner sealing ring 71 work together to seal the gap between the outer flange 4 and the inner flange 1, preventing external impurities from entering the space where the rolling element 3 is located.

[0063] Among them, reference Figure 6 The aforementioned inner sealing ring 71 includes an inner skeleton 711 and an inner sealing body 712 disposed outside the inner skeleton 711. The inner skeleton 711 is mounted on the outer flange 4. The inner skeleton 711 may be optionally interference-fitted onto the outer flange 4.

[0064] The inner sealing body 712 has a plurality of outwardly extending inner sealing teeth 712a, wherein at least one inner sealing tooth 712a abuts against the outer sealing ring 72 in the radial direction of the inner flange 1, and at least one inner sealing tooth 712a abuts against the outer sealing ring 72 in the axial direction of the inner flange 1.

[0065] Understandably, by setting multiple inner sealing teeth 712a, at least one inner sealing tooth 712a presses against the outer sealing ring 72 in the radial direction of the inner flange 1, and at least one inner sealing tooth 712a presses against the outer sealing ring 72 in the axial direction of the inner flange 1. In this way, the setting of the inner sealing teeth 712a makes the inner sealing ring 71 and the outer sealing ring 72 form multiple seals, thereby preventing external impurities from entering.

[0066] Furthermore, the inner sealing tooth 712a, which presses against the outer sealing ring 72 axially on the inner flange 1, extends radially away from the inner flange 1. Thus, the inner sealing tooth 712a is inclined, so even if external impurities enter, the force exerted by the external impurities on the inner sealing tooth 712a will increase the deformation of the inner sealing tooth 712a, thereby increasing the tightness of the contact between it and the outer sealing ring 72, thereby improving the sealing effect to a certain extent.

[0067] It should be noted that, for ease of description, the inner sealing tooth 712a that presses against the outer sealing ring 72 axially on the inner flange 1 is defined as the first inner sealing tooth, and the inner sealing tooth 712a that presses against the outer sealing ring 72 radially on the inner flange 1 is defined as the second inner sealing tooth. In the radial direction of the inner flange 1, the second sealing tooth is closer to the inner flange 1 than the first inner sealing tooth. Thus, in the sealing channel formed between the inner sealing ring 71 and the outer sealing ring 72, the first inner sealing tooth serves as the initial seal, and the second sealing tooth serves as the subsequent seal. Of course, one of the second sealing teeth can also be positioned further away from the inner flange 1 than the first inner sealing tooth 712a.

[0068] For example, refer to Figure 6The first inner sealing tooth is provided with three teeth, the second inner sealing tooth is provided with one tooth, and there is another inner sealing tooth 712a extending towards the outer sealing ring 72, but not contacting the outer sealing ring 72, thus forming five seals.

[0069] Reference Figure 4 and Figure 6 The inner flange 1 also has a shoulder 11, and the outer sealing ring 72 abuts against the shoulder 11 in the axial direction of the inner flange 1.

[0070] Understandably, the second sealing assembly 7 and the first sealing assembly 6 are located on both sides of the outer flange 4 in the axial direction, and the outer sealing ring 72 abuts against the shoulder 11 in the axial direction of the inner flange 1. This is to facilitate the installation of the outer sealing ring 72 into place when it is installed on the inner flange 1, and to limit the outer sealing ring 72 in the axial direction of the inner flange 1, preventing the outer sealing ring 72 from shifting.

[0071] The aforementioned shoulder 11 is used for connection with the wheel. The outer sealing ring 72 partially abuts against the inner flange 1 and partially abuts against the shoulder 11, and the outer sealing ring 72 extends axially from the inner flange to the outside of the outer flange 4. Thus, the opening of the gap between the outer sealing ring 72 and the outer flange 4 faces away from the wheel connected to the shoulder 11, thereby making it difficult for external impurities brought up by the wheel rotation to enter between the inner sealing ring 71 and the outer sealing ring 72.

[0072] It should be noted that the material of the aforementioned inner sealing body 712 can be rubber, in which case the inner sealing body 712 is integrally vulcanized and molded onto the inner skeleton 711. The inner skeleton 711 can be a metal part, which has high structural strength and facilitates an interference fit between the inner sealing ring 71 and the outer flange 4.

[0073] The aforementioned outer sealing ring 72 includes an outer skeleton and an outer sealing body disposed outside the outer skeleton. The material of the outer sealing body can be selected as rubber, thus the outer sealing body is integrally vulcanized onto the outer skeleton. The outer skeleton can be selected as a metal part, which has high structural strength and facilitates an interference fit between the outer sealing ring and the inner flange 1.

[0074] The outer sealing ring 72 has an annular structure and includes a first part 72a, a second part 72b, a third part 72c, a fourth part 72d, and a fifth part 72e connected sequentially from the inside to the outside. The first part 72a is interference-fitted to the inner flange 1. The third part 72c and the fifth part 72e are parallel to the first part 72a. The third part 72c extends towards the outer flange 4, and the fifth part 72e is located on the outside of the outer flange 4.

[0075] At least one inner sealing tooth 712a presses against the first part 72a, at least one inner sealing tooth 712a presses against the second part 72b, and at least one inner sealing tooth 712a presses against the fourth part 72d. In this way, a labyrinth seal is formed by the structure of the outer sealing ring 72 and the inner sealing tooth 712a of the inner sealing ring, ensuring the sealing effect of the inner sealing ring 71 and the outer sealing ring 72 on the gap between the outer flange 4 and the inner flange 1.

[0076] The second part 72b abuts against the shoulder 11. Furthermore, the overall length of the outer sealing ring 72 in the axial direction of the inner flange 1 can be set to 12.6 mm, while the radial width of the inner flange 1 can be set to 16 mm. The radial width of the second part in the inner flange 1 can be set to 8.9 mm.

[0077] For example, refer to Figure 1 and Figure 6 An exemplary hub bearing structure is provided, including an inner flange 1, an inner ring 2, rolling elements 3, an outer flange 4, a magnetic element 5, and a first sealing assembly 6.

[0078] The inner ring 2 is fitted onto the inner flange 1. The outer flange 4 is fitted onto the outside of the inner flange 1, forming a space between the outer flange 4 and the inner ring 2 to accommodate the rolling element 3. A groove 4a is provided on the inner circumference of the outer flange 4, and the magnetic element 5 is disposed in the groove 4a. The first sealing assembly 6 is disposed between the inner ring 2 and the outer flange 4, and presses against the inner circumference of the outer flange 4 to seal the magnetic element 5.

[0079] The inner ring 2 is interference-fitted to the inner flange 1. The hardness HRC of the outer circumferential surface of the inner flange 1 and the inner circumferential surface of the outer flange 4 is 60-64, and the surface hardness HRC of the inner ring 2 is 60-64.

[0080] Both the inner flange 1 and the inner ring 2 have receiving grooves for accommodating the rolling element 3, and the height of the receiving groove on the side wall outside the rolling element 3 is greater than or equal to the radius of the rolling element 3.

[0081] The aforementioned first sealing assembly 6 includes an upper sealing ring 61, which comprises an upper skeleton 611 and a flexible upper sealing body 612 disposed outside the upper skeleton 611. The upper skeleton 611 is interference-fitted to the outer flange 4, and the upper sealing body 612 presses against the inner circumference of the outer flange 4 to seal the magnetic component 5. The aforementioned first sealing assembly 6 also includes a lower sealing ring 62, which comprises a lower skeleton 621 and a flexible lower sealing body 622 disposed outside the lower skeleton 621. The lower skeleton 621 is interference-fitted to the inner ring 2.

[0082] The aforementioned upper sealing body 612 has a plurality of outwardly extending upper sealing teeth 612a, wherein at least one upper sealing tooth 612a abuts against the lower skeleton 621 in the radial direction of the inner flange 1, and at least one upper sealing tooth 612a extends in the radial direction away from the inner flange 1 and abuts against the lower sealing ring 62 in the axial direction of the inner flange 1.

[0083] The hub bearing structure also includes a second sealing assembly 7, which is disposed between the outer flange 4 and the inner flange 1, and the first sealing assembly 6 and the second sealing assembly 7 are respectively located on both sides of the outer flange 4 in the axial direction.

[0084] The aforementioned second sealing assembly 7 includes an outer sealing ring 72 and an inner sealing ring 71. The inner sealing ring 71 is installed on the outer flange 4, and the outer sealing ring 72 is installed on the inner flange 1 and covers the outside of the inner sealing ring 71.

[0085] The aforementioned inner sealing ring 71 includes an inner skeleton 711 and a flexible inner sealing body 712 disposed outside the inner skeleton 711, with the inner bracket mounted on the outer flange 4. The inner sealing body 712 has a plurality of outwardly extending inner sealing teeth 712a, wherein at least one inner sealing tooth 712a abuts against the outer sealing ring 72 in the radial direction of the inner flange 1, and at least one inner sealing tooth 712a abuts against the outer sealing ring 72 in the axial direction of the inner flange 1.

[0086] The aforementioned inner flange 1 also has a shoulder 11, and the outer sealing ring 72 abuts against the shoulder 11 in the axial direction of the inner flange 1.

[0087] Other embodiments of this application provide a vehicle including a hub bearing structure as described in any of the above embodiments.

[0088] The vehicle provided in this application embodiment has the beneficial effects of the wheel hub bearing structure of any of the above embodiments because it includes the wheel hub bearing structure of any of the above embodiments, which will not be described again here.

[0089] The vehicle also includes a steering knuckle, wheels, and wheel speed sensors. The steering knuckle connects to the wheels via the aforementioned wheel hub bearing structure. The wheel speed sensors are mounted on the steering knuckle, thus cooperating with the magnetic component 5 to collect wheel speed data. Furthermore, since the magnetic component 5 is located within the groove 4a on the outer flange 4 and is sealed by the first sealing assembly 6, the operating environment of the magnetic component 5 is improved. This reduces the probability of the magnetic component 5 being affected by external impurities such as sand, mud, or iron debris, and even prevents it from being affected by external impurities. Consequently, the magnetic component 5 and the wheel speed sensor can work together to accurately collect wheel speed data.

[0090] Moreover, the first sealing component 6 not only seals the magnetic component 5, but also seals the outer flange 4 and the inner ring 2, preventing external impurities from entering the space where the rolling element 3 is located.

[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0092] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hub bearing structure, characterized in that, include: Inner flange (1) The inner ring (2) is fitted onto the inner flange (1); Rolling element (3) and outer flange (4), wherein the outer flange (4) is sleeved on the outside of the inner flange (1) and forms a space for accommodating the rolling element (3) between the inner ring (2) and the inner flange (1); The magnetic component (5) is provided with a groove (4a) on the inner circumference of the outer flange (4), and the magnetic component (5) is disposed in the groove (4a); The first sealing assembly (6) is disposed between the inner ring (2) and the outer flange (4) and presses against the inner circumference of the outer flange (4) to seal the magnetic element (5).

2. The hub bearing structure according to claim 1, characterized in that, The first sealing assembly (6) includes an upper sealing ring (61), the upper sealing ring (61) includes an upper skeleton (611) and an upper sealing body (612) disposed outside the upper skeleton (611) and being flexible. The upper skeleton (611) is interference-fitted to the outer flange (4), and the upper sealing body (612) presses against the inner circumference of the outer flange (4) to seal the magnetic element (5).

3. The hub bearing structure according to claim 2, characterized in that, The first sealing assembly (6) further includes a lower sealing ring (62), the lower sealing ring (62) includes a lower skeleton (621) and a flexible lower sealing body (622) disposed outside the lower skeleton (621), the lower skeleton (621) being interference-fitted to the inner ring (2); The upper sealing body (612) has a plurality of outwardly extending upper sealing teeth (612a), wherein at least one of the upper sealing teeth (612a) abuts against the lower skeleton (621) radially on the inner flange (1), and at least one of the upper sealing teeth (612a) extends radially away from the inner flange (1) and abuts against the lower sealing ring (62) axially on the inner flange (1).

4. The hub bearing structure according to claim 1, characterized in that, Both the inner flange (1) and the inner ring (2) have receiving grooves for accommodating the rolling element (3), and the height of the receiving groove on the side wall outside the rolling element (3) is greater than or equal to the radius of the rolling element (3).

5. The hub bearing structure according to claim 1, characterized in that, It also includes a second sealing assembly (7), which is disposed between the outer flange (4) and the inner flange (1), and the first sealing assembly (6) and the second sealing assembly (7) are respectively located on both sides of the outer flange (4) in the axial direction.

6. The hub bearing structure according to claim 5, characterized in that, The second sealing assembly (7) includes an outer sealing ring (72) and an inner sealing ring (71). The inner sealing ring (71) is installed on the outer flange (4), and the outer sealing ring (72) is installed on the inner flange (1) and covers the outside of the inner sealing ring (71).

7. The hub bearing structure according to claim 6, characterized in that, The inner sealing ring (71) includes an inner skeleton (711) and a flexible inner sealing body (712) disposed outside the inner skeleton (711). The inner skeleton (711) is installed on the outer flange (4). The inner sealing body (712) has a plurality of outwardly extending inner sealing teeth (712a), wherein at least one of the inner sealing teeth (712a) abuts against the outer sealing ring (72) in the radial direction of the inner flange (1), and at least one of the inner sealing teeth (712a) abuts against the outer sealing ring (72) in the axial direction of the inner flange (1).

8. The hub bearing structure according to claim 6, characterized in that, The inner flange (1) also has a shoulder (11), and the outer sealing ring (72) abuts against the shoulder (11) in the axial direction of the inner flange (1).

9. The hub bearing structure according to claim 1, characterized in that, The inner ring (2) is interference-fitted to the inner flange (1); And / or, the hardness HRC of the outer periphery of the inner flange (1) and the inner periphery of the outer flange (4) are both 60-64, and the hardness HRC of the inner ring (2) is 60-64.

10. A vehicle, characterized in that, Includes the hub bearing structure as described in any one of claims 1 to 9.

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