Bearing inner flange, hub bearing and vehicle

Abstract

The utility model provides a bearing inner flange, a hub bearing and a vehicle, and belongs to the technical field of bearings, the bearing inner flange comprises a flange plate and a protruding part protruding towards one side of the flange plate, and the protruding part is used for being inserted into an outer flange of the hub bearing. Wherein the flange plate is provided with a plurality of protrusions protruding towards the other side, the protrusions are arranged at intervals in the circumferential direction of the flange plate, each protrusion is provided with a first installation part, at least one protrusion is provided with a second installation part, the first installation parts are used for installing a rim, and the second installation parts are used for installing a brake disc. According to the bearing inner flange, the installation matching area can be reduced, the machining precision can be improved, and then the influence of the flatness of an installation face on brake disc jumping is reduced. Besides, the requirements of different wheel treads can be met by setting the protruding height of the protrusions, different hub bearing structures do not need to be specially designed for different wheel treads, and the universality of the hub bearing can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bearing inner flange. Simultaneously, the utility model also relates to a wheel hub bearing provided with the bearing inner flange, and a vehicle provided with the wheel hub bearing. Background Art

[0002] Wheel hub bearings are key components in a vehicle's chassis system. Installed between the wheels and axles, their primary function is to support the weight of the vehicle, including the body, passengers, and cargo. They also enable the wheels to rotate flexibly relative to the axles, reducing friction during wheel rotation and ensuring smooth and comfortable driving.

[0003] The main structure of the wheel hub bearing includes an inner flange and an outer flange, and the inner flange is integrated with the wheel mounting hole, brake disc mounting hole and positioning structure. Among them, the mating surface between the inner flange and the brake disc of the existing wheel hub bearing is relatively large. After processing, the high flatness requirement will have an adverse effect on the disc jump index of the brake disc, which may cause jitter and uneven braking force during braking. In addition, the existing wheel hub bearing structure is also unable to meet the requirements of different wheel track requirements. Different models or different configurations of the same model may require different wheel track requirements. The design limitations of current wheel hub bearings limit their versatility under various wheel track requirements and increase the complexity of production and assembly. Utility Model Content

[0004] In view of this, the present invention aims to provide a bearing inner flange to reduce brake disc jump and meet different wheelbase requirements.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A bearing inner flange comprises a flange plate and a protruding portion protruding toward one side of the flange plate, wherein the protruding portion is used to be inserted into an outer flange of a hub bearing;

[0007] Relative to the protruding portion, the flange is provided with a protrusion protruding toward the other side, and the protrusions are multiple and arranged at intervals along the circumference of the flange. Each of the protrusions is provided with a first mounting portion, and at least one of the protrusions is provided with a second mounting portion. The first mounting portion is used to mount the rim, and the second mounting portion is used to mount the brake disc.

[0008] Furthermore, a positioning portion is provided on the flange, and the positioning portion is used to position the brake disc on the flange.

[0009] Furthermore, the positioning portion includes a positioning boss provided on the flange, and relative to the protruding portion, the positioning boss protrudes toward the other side of the flange.

[0010] Furthermore, the second mounting portion includes a second mounting hole provided on the corresponding protrusion.

[0011] Furthermore, the positioning boss is cylindrical, and the outer diameter of the positioning boss is different from the inner diameter of the second mounting hole.

[0012] Furthermore, a positioning pin is interference-pressed onto the flange, and the positioning pin constitutes the positioning boss.

[0013] Furthermore, the first mounting portion includes a first mounting hole provided on the corresponding protrusion, and a bolt fixed in the first mounting hole.

[0014] Furthermore, the bolt is interference-pressed into the first mounting hole, and teeth are provided at the portion of the bolt located in the first mounting hole. The teeth are multiple and are sequentially arranged along the circumference of the bolt.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The bearing inner flange described in the present invention provides a protrusion on the flange plate, and provides a first mounting portion for mounting the wheel hub and a second mounting portion for mounting the brake disc on the protrusion. Compared with the traditional method of directly providing the mounting portion on the end face of the flange plate, the mounting fitting area can be reduced, which is conducive to improving the processing accuracy, thereby reducing the influence of the flatness of the mounting surface on the brake disc jump, and making the braking process smoother and more reliable; in addition, the protruding height of the protrusion can be set to meet the needs of different wheel spacings, and there is no need to specially design different wheel hub bearing structures for different wheel spacings, which greatly reduces the production cost and production complexity, and can improve the versatility of the wheel hub bearing.

[0017] Furthermore, by providing a positioning portion on the flange for positioning the brake disc, the brake disc can be quickly and accurately positioned, improving installation efficiency and precision. This effectively prevents problems such as uneven braking and increased braking distance caused by disc installation deviations. The positioning portion, comprising a positioning boss on the flange, has a simple structure and is easy to design and implement. Furthermore, it accurately limits the position of the brake disc, effectively preventing disc deviation during installation.

[0018] Secondly, the second mounting portion includes a second mounting hole provided on the protrusion, which has a simple structure and facilitates installation and removal of the brake disc, reducing maintenance costs and difficulty. By setting the outer diameter of the positioning boss and the inner diameter of the second mounting hole to be different, workers can easily distinguish the positioning boss from the second mounting hole based on this size difference, avoiding the accidental alignment of the brake disc's mounting portion with the positioning boss, thereby achieving quick and correct installation and improving assembly efficiency.

[0019] Compared with the form of integrally forming the positioning boss on the flange, using the positioning pin as the positioning boss can ensure its strength and rigidity through appropriate manufacturing processes, such as using high-strength materials and precision processing, so that the positioning pin can firmly maintain the position of the brake disc and prevent the brake disc from loosening or displacement due to external forces.

[0020] Furthermore, the first mounting portion includes a first mounting hole provided on the protrusion and a bolt provided in the first mounting hole, which can improve the installation firmness of the rim. At the same time, the bolt can also facilitate installation by providing positioning for the installation of the wheel without setting up a special positioning structure, which is beneficial to reducing the weight of the inner flange. Moreover, when the vehicle is maintained or the rim needs to be replaced, this bolt connection method is easy to disassemble.

[0021] In addition, by providing a plurality of teeth arranged in sequence along the circumference of the portion where the bolt is located in the first mounting hole, not only can the bolt be effectively prevented from rotating, but also the tight engagement of the teeth with the wall of the mounting hole can be utilized to improve the firmness of the bolt on the flange, thereby improving the installation firmness of the rim.

[0022] In addition, another object of the present invention is to provide a wheel hub bearing, which includes the bearing inner flange as described above.

[0023] The wheel hub bearing of the present invention can make the braking process smoother and more reliable by providing the bearing inner flange as described above; at the same time, the protruding height of the protrusion can be set to meet the requirements of different wheel spacings, without the need to design different wheel hub bearing structures specifically for different wheel spacings, thereby improving the versatility of the wheel hub bearing.

[0024] In addition, the utility model also relates to a vehicle, on which the wheel hub bearing as described above is provided.

[0025] The vehicle described in the present invention has all the beneficial effects of the above-mentioned wheel hub bearings, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of the bearing inner flange according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic structural diagram of the bearing inner flange according to an embodiment of the present utility model from another perspective;

[0029] Figure 3 This is a schematic structural diagram of a hub bearing according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic structural diagram of the hub bearing according to an embodiment of the present utility model from another perspective;

[0031] Figure 5 for Figure 4 Sectional view along line AA.

[0032] Description of reference numerals:

[0033] 1. Inner flange; 2. Bolt; 3. Dowel pin; 4. Outer flange; 5. Cover plate; 6. Rolling element; 7. Cage;

[0034] 11. Flange; 101. Protrusion; 102. Protruding portion; 103. Second mounting hole. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0036] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] Example 1

[0040] Given the following shortcomings of existing wheel hub bearings, first, the mating surface between the inner flange 1 of the wheel hub bearing and the brake disc is relatively large. The high flatness requirements after machining can adversely affect the brake disc's disc jump index, potentially leading to jitter and uneven braking force during braking. Second, different vehicle models or different configurations of the same vehicle model may require different wheelbases, and existing wheel hub bearing structures cannot meet these requirements.

[0041] Therefore, this embodiment specifically proposes a new type of bearing inner flange (referred to as inner flange 1), and in terms of overall structure, the inner flange 1 includes a flange plate 11 and a protruding portion 102 protruding to one side of the flange plate 11, and the protruding portion 102 is used to be inserted into the outer flange 4 of the hub bearing.

[0042] Among them, relative to the protruding portion 102, the flange 11 is provided with a protrusion 101 protruding to the other side. There are multiple protrusions 101 arranged at intervals along the circumference of the flange 11. Each protrusion 101 is provided with a first mounting portion, and at least one of the protrusions 101 is provided with a second mounting portion. The first mounting portion is used to install the rim, and the second mounting portion is used to install the brake disc.

[0043] In this embodiment, by providing a plurality of protrusions 101 on the flange 11, and providing a first mounting portion for mounting the wheel hub, and a second braking portion for mounting the brake disc, on the protrusions 101, not only can the weight of the wheel rim be more evenly distributed on the flange 11, thereby reducing the risk of damage to a single portion due to excessive force. Moreover, compared to the traditional method of directly providing the mounting portion on the end face of the flange 11, the mounting mating area can be reduced, which is conducive to improving processing accuracy, thereby reducing the impact of the flatness of the mounting surface on the brake disc jump, and making the braking process more stable and reliable. In addition, the protruding height of the protrusions 101 can be set to meet the requirements of different wheelbases, eliminating the need to design different hub bearing structures for different wheelbases, greatly reducing production costs and complexity, and improving the versatility of the hub bearings.

[0044] Based on the above overall introduction, an exemplary structure of the inner flange 1 of this embodiment is shown in FIG. Figures 1 to 5 As shown in , the flange 11 is disk-shaped as a whole, and the protrusions 101 are specifically five spaced apart along its circumference. Here, in order to facilitate the arrangement of the protrusions 101 and to minimize its weight, as a preferred embodiment, the flange 11 of this embodiment is roughly pentagonal, and each protrusion 101 is provided at each corner of the flange 11. In addition, the protruding portion 102 is cylindrical in shape as a whole. In this case, in order to reduce the overall weight of the inner flange 1, as shown in FIG. Figure 1 、 Figure 2 and Figure 5 As shown in , weight-reducing grooves are formed in the middle of the flange 11 and at the ends of the protruding portion 102. In addition, the shape of the protrusion 101 is generally rectangular. Here, the shape of the protrusion 101 is not specifically limited and can be set to other irregular shapes, or to regular circular or rectangular shapes.

[0045] It should be noted that the shape of the flange 11 and the number of the protrusions 101 are not limited to Figure 1 As shown in , it can also be adjusted accordingly according to design requirements. For example, the flange 11 is set to a circle, or the number of the protrusions 101 is set to six, and the shape of the flange 11 can also be set to be roughly hexagonal.

[0046] Combine Figure 1 and Figure 2 As shown in , as a preferred embodiment, the first mounting portion of this embodiment includes a first mounting hole provided on the corresponding protrusion 101, and a bolt 2 secured in the first mounting hole. The first mounting portion of this embodiment, including the first mounting hole and the bolt 2, provides sufficient tightening force to securely mount the rim on the protrusion 101, ensuring that the rim will not loosen or shift due to external forces. Furthermore, the bolt 2 provides positioning for wheel installation, facilitating installation without the need for a dedicated positioning structure, thereby reducing the weight of the inner flange 1. Furthermore, this bolt 2 connection facilitates disassembly during vehicle maintenance or when the rim needs to be replaced.

[0047] As a further embodiment, the bolt 2 of this embodiment is press-fitted into the first mounting hole, and a plurality of teeth are provided at the portion of the bolt 2 located in the first mounting hole. The teeth are arranged sequentially along the circumference of the bolt 2. By press-fitting the bolt 2 into the first mounting hole, a high friction force is generated between the bolt 2 and the mounting hole, thereby ensuring that the bolt 2 is more firmly positioned within the first mounting hole.

[0048] Furthermore, by providing multiple teeth arranged circumferentially around the portion of bolt 2 within the first mounting hole, when torque is applied to bolt 2, the teeth create resistance against the inner wall of the first mounting hole, preventing bolt 2 from rotating within the first mounting hole. During vehicle operation, the wheel rim transmits torque to bolt 2. The teeth effectively prevent bolt 2 from rotating as torque is transmitted, ensuring that the relative position between the wheel rim and inner flange 1 remains fixed, thereby enhancing the secure connection between the two.

[0049] In addition, as a specific implementation, in this embodiment, the second mounting portion is provided only on one protrusion 101. Figure 1 As shown in FIG, as a preferred embodiment, the second mounting portion of this embodiment includes a second mounting hole 103 provided on the protrusion 101. This structure is simple and can facilitate the installation of the brake disc; at the same time, it can also facilitate the disassembly of the brake disc, which can reduce maintenance costs and difficulty. The position of the second mounting hole 103 is not limited to Figure 1 The second mounting portion is located on one of the protrusions 101. In specific implementation, it can be determined based on the installation requirements of the brake disc and the layout of the entire wheel hub bearing inner flange 1. Providing the second mounting portion on one of the protrusions 101 helps ensure the machining accuracy of this location, thereby improving the assembly accuracy between the brake disc and the inner flange 1.

[0050] As a further embodiment, a positioning portion is provided on the flange 11, and the positioning portion is used to position the brake disc on the flange 11. Figure 1 As shown in , as a specific embodiment, the positioning portion of this embodiment includes a positioning boss provided on the flange 11, and relative to the protruding portion 102, the positioning boss 1 protrudes toward the other side of the flange 11. The positioning portion adopts a positioning boss, which has a simple structure and is easy to design and implement. At the same time, it can also accurately limit the position of the brake disc, and can effectively avoid the deviation of the brake disc during the installation process. In addition, since the positioning boss forms an additional protruding structure on the flange 11, after cooperating with other components, the contact area and connection tightness between the flange 11 and related components can be increased to a certain extent, which helps to better withstand forces from all directions during the operation of the vehicle, thereby enhancing the structural stability of the entire hub bearing inner flange 1 and even the entire hub system.

[0051] In addition, as a preferred embodiment, the positioning boss of this embodiment is cylindrical, and the outer diameter of the positioning boss is different from the inner diameter of the second mounting hole 103. This configuration not only facilitates the processing and manufacturing of the positioning boss, but also, the outer diameter of the positioning boss 1 is different from the inner diameter of the second mounting hole 103, so that the two different functional areas can be clearly divided in the structure, which can avoid confusion that may occur during assembly or use. In addition, as a preferred embodiment, if Figure 1and Figure 4 As shown in FIG, the positioning boss and the second mounting hole 103 of this embodiment are respectively provided on opposite sides of the flange 11. This design has the advantage of not only preventing the structure on one side of the flange 11 from being too crowded, but also facilitating the simultaneous deployment of workers on both sides of the flange 11 for positioning and brake disc installation during assembly on the automobile production line, thereby improving assembly efficiency.

[0052] In addition, if Figure 2 As shown in , as a preferred embodiment, a locating pin 3 is interference-pressed on the flange 11, and the locating pin 3 constitutes a locating boss. With such an arrangement, compared with an integrally formed locating boss, its strength and rigidity can be ensured through appropriate manufacturing processes, such as the use of high-strength materials and precision machining, so that the locating pin 3 can firmly maintain the position of the brake disc and prevent the brake disc from loosening or displacement due to external forces. Moreover, if the locating pin 3 is damaged during the production process, it can be easily replaced. In addition, the locating pin 3 acts as a locating boss, and because of its typical columnar shape, its cylindrical side surface can provide a more uniform contact and positioning effect when cooperating with other components. When cooperating with external locating holes or locating grooves and other structures, the circumferential surface of the locating pin 3 can be more accurately embedded in the corresponding position along the axial and circumferential directions to achieve precise positioning.

[0053] By employing the above-described structure, the inner flange 1 of this embodiment reduces the mounting area with the wheel rim, thereby improving machining accuracy and further reducing the impact of mounting surface flatness on brake disc bounce, resulting in a smoother and more reliable braking process. Furthermore, the protrusion height of the protrusion 101 can be adjusted to accommodate different wheelbases, eliminating the need to design separate hub bearing structures for different wheelbases. This significantly reduces production costs and complexity, and enhances the versatility of the hub bearing.

[0054] Example 2

[0055] This embodiment relates to a wheel hub bearing, which includes the bearing inner flange in the first embodiment.

[0056] In addition, if Figure 4 and Figure 5 As shown in , similar to the prior art, the wheel hub bearing of this embodiment further includes an outer flange 4 sleeved over the protruding portion 102, and a cover plate 5 positioned at the end of the outer flange 4. Furthermore, an inner ring is sleeved over the end of the protruding portion 102 away from the flange 11, with rolling elements 6 and a retainer 7 disposed between the inner ring and the outer flange 4, and between the protruding portion 102 and the outer flange 4, respectively. Furthermore, an oil seal is disposed between the end of the protruding portion 102 closer to the flange 11 and the outer flange 4. For other structures of the wheel hub bearing, reference can be made to the third-generation wheel hub bearings of the prior art.

[0057] The wheel hub bearing of this embodiment can make the braking process smoother and more reliable by setting the inner flange 1 in the first embodiment; at the same time, the requirements of different wheel spacings can be met by setting the protruding height of the protrusion 101, without the need to design different wheel hub bearing structures specifically for different wheel spacings, which can improve the versatility of the wheel hub bearing.

[0058] In addition, this embodiment also relates to a vehicle, which is provided with the above-mentioned wheel hub bearing.

[0059] The vehicle of this embodiment has all the beneficial effects of the above-mentioned wheel hub bearings, which will not be described in detail here.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bearing inner flange, characterized in that: It comprises a flange (11) and a protruding portion (102) protruding toward one side of the flange (11), wherein the protruding portion (102) is used for inserting into an outer flange (4) of a hub bearing; Relative to the protruding portion (102), the flange (11) is provided with a protrusion (101) protruding toward the other side, and the protrusions (101) are multiple and spaced apart along the circumference of the flange (11), each of the protrusions (101) is provided with a first mounting portion, and at least one of the protrusions (101) is provided with a second mounting portion, the first mounting portion is used to mount a wheel rim, and the second mounting portion is used to mount a brake disc.

2. The bearing inner flange according to claim 1, characterized in that: A positioning portion is provided on the flange (11), and the positioning portion is used to position the brake disc on the flange (11).

3. The bearing inner flange according to claim 2, characterized in that: The positioning portion comprises a positioning boss provided on the flange (11), and relative to the protruding portion (102), the positioning boss protrudes toward the other side of the flange (11).

4. The bearing inner flange according to claim 3, characterized in that: The second mounting portion includes a second mounting hole (103) provided on the corresponding protrusion (101).

5. The bearing inner flange according to claim 4, characterized in that: The positioning boss is cylindrical, and the outer diameter of the positioning boss is different from the inner diameter of the second mounting hole (103).

6. The bearing inner flange according to claim 3, characterized in that: A positioning pin (3) is installed on the flange (11) by interference pressure, and the positioning pin (3) constitutes the positioning boss.

7. The bearing inner flange according to any one of claims 1 to 6, characterized in that: The first mounting portion comprises a first mounting hole provided on the protrusion (101), and a bolt (2) fixed in the first mounting hole.

8. The bearing inner flange according to claim 7, characterized in that: The bolt (2) is interference-pressed in the first mounting hole, and teeth are provided at the portion of the bolt (2) located in the first mounting hole. The teeth are a plurality of teeth sequentially arranged along the circumference of the bolt (2).

9. A wheel hub bearing, characterized in that: The hub bearing includes the bearing inner flange according to any one of claims 1 to 8.

10. A vehicle, characterized in that: The vehicle is provided with the wheel hub bearing according to claim 9.

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