Inner ring and profiling ring integrated hub unit bearing

Abstract

The utility model discloses an inner ring and profiling ring integrated hub unit bearing, and particularly relates to the field of milling cutters, the hub unit bearing comprises a bearing unit assembly, an inner ring, an outer ring, a lubricating ring groove and a straight oil groove, the inner ring is arranged at the right end of the bearing unit assembly, a driving shaft cavity is formed in an inner cavity of the inner ring, the outer ring is arranged on the outer surface of the inner ring, and the lubricating ring groove is communicated with the straight oil groove. Steel balls are arranged between the inner ring and the outer ring, the lubricating ring groove is formed in the left side of the inner surface of the driving shaft cavity, and the straight oil groove is formed in the center of the inner cavity of the driving shaft cavity. Through the lubricating ring groove and the straight oil groove, a user can easily block the oil inlet hole only by rotating a bolt to abut against the sealing ring, it is ensured that lubricating oil can be directly injected into the bearing when needed, the design that the linear oil groove is communicated with the annular oil groove ensures that the lubricating oil can be effectively distributed in the bearing, abrasion caused by insufficient oil films is reduced, and the service life of the bearing is prolonged. And through the double-sealing design of the first sealing ring and the second sealing ring, the sealing effect of the driving shaft cavity is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of automobile wheel hubs, and more specifically, to an inner ring and a contour ring integrated wheel hub unit bearing. Background Art

[0002] The wheel hub is a cylindrical metal part with the inner profile of the tire supporting the tire and the center mounted on the shaft, which is also commonly known as the "wheel rim" or "steel rim". With the development of technology, car wheel hub units have been widely used in cars;

[0003] After searching, the existing patent (publication number: CN220009335U) discloses an automobile wheel hub unit with a contour ring integrated on the inner ring, including a wheel hub unit assembly, the wheel hub unit assembly includes a hub flange, an outer ring flange movably connected to the hub flange is provided on one side of the hub flange, a convex inner ring is provided between the rear of the outer ring flange and the hub flange and is clamped and connected to the wheel flange, and the contact surfaces of the convex inner ring and the outer port flange and the hub flange and the outer ring flange are provided with retainers, and a plurality of rollers are provided inside the retainer, and the rollers are distributed in an annular manner with equal spacing. The convex inner ring is fixedly connected by two semi-inner circles through bearings and threaded holes, and the surface of the semi-inner circle is penetrated with positioning bolt holes, and the automobile wheel hub unit is installed through the positioning bolt holes, so that it is firm and convenient to operate by one person during installation, thereby saving manpower and facilitating positioning of multiple bolt holes. In the process of realizing the utility model, the inventor found that the prior art has the following problems:

[0004] During the use of existing automobile hub units, the lubricating oil will be absorbed or taken away by the equipment, especially under high speed and high load conditions, the oil will gradually decrease, resulting in the need to disassemble and tediously replenish the oil. In addition, under high load or high speed conditions, the lubricating oil may not reach various parts in time, causing the oil film to rupture, thereby increasing the wear of metal contacts, causing some areas to wear faster due to insufficient lubrication;

[0005] Therefore, in order to solve the above problems, an inner ring contour ring integrated hub unit bearing is proposed. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides an inner ring contour ring integrated hub unit bearing to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inner ring and contour ring integrated hub unit bearing, comprising a bearing unit assembly, an inner ring, an outer ring, a lubrication ring groove and a straight oil groove, wherein the inner ring is arranged at the right end of the bearing unit assembly, the inner cavity of the inner ring is provided with a drive shaft cavity, the outer ring is arranged on the outer surface of the inner ring, a steel ball is arranged between the inner ring and the outer ring, and the steel ball is arranged in a plurality of groups, the lubrication ring groove is arranged on the left side of the inner surface of the drive shaft cavity, and the straight oil groove is arranged at the center of the inner cavity of the drive shaft cavity;

[0008] An oil inlet hole is provided at the upper end of the lubrication ring groove, a sealing ring is provided on the upper end surface of the oil inlet hole, a threaded hole is provided above the sealing ring, and a bolt is installed in the inner cavity of the threaded hole.

[0009] Preferably, a connecting flange is provided on the outer surface of the right end of the bearing unit assembly, and retaining frames are provided on both ends of the outer ring.

[0010] Preferably, the lubrication ring groove is communicated with the straight oil groove, and the oil inlet hole is communicated with the lubrication ring groove.

[0011] Preferably, the bolt and the threaded hole are threadedly connected, and the bolt penetrates the threaded hole and abuts against the sealing ring.

[0012] Preferably, a first sealing ring is provided on the left side of the inner surface of the drive shaft cavity, and a second sealing ring is provided on the right side of the inner surface of the drive shaft cavity, and the first sealing ring and the second sealing ring form a double sealing structure.

[0013] Preferably, the first sealing ring, the second sealing ring and the sealing ring are all made of rubber material, and a plurality of groups of the steel balls are equidistantly spaced around the inner ring and the outer ring.

[0014] Technical effects and advantages of the utility model:

[0015] 1. Compared with the prior art, the inner ring contour ring integrated hub unit bearing has a lubrication ring groove and a straight oil groove. The user only needs to rotate the bolt against the sealing ring to easily block the oil inlet hole, ensuring that the lubricating oil can be directly injected into the bearing when needed. The connection design of the linear oil groove and the annular oil groove ensures that the lubricating oil can be effectively distributed in the bearing, reducing the wear caused by insufficient oil film and improving the running stability and flexibility.

[0016] 2. Compared with the prior art, the inner ring contour ring integrated hub unit bearing enhances the sealing effect of the drive shaft cavity through the double sealing design of the first sealing ring and the second sealing ring, effectively prevents the leakage of the lubricating oil, can effectively prevent external impurities and moisture from entering the drive shaft cavity, keep the lubricating oil clean, ensure the lubrication effect, reduce friction and wear, ensure the integrity of the lubrication system, and extend the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall front section structure of the utility model.

[0018] Figure 2 It is a left-side structural schematic diagram of the utility model.

[0019] Figure 3 It is a right side structural schematic diagram of the utility model.

[0020] Figure 4 For this utility model Figure 1 Schematic diagram of the local enlarged structure at A in the figure.

[0021] The accompanying drawings are marked as follows: 1. bearing unit assembly; 2. inner ring; 21. drive shaft cavity; 3. outer ring; 4. steel ball; 5. retaining frame; 6. first sealing ring; 7. second sealing ring; 8. lubrication ring groove; 9. straight oil groove; 10. oil inlet hole; 11. threaded hole; 12. bolt; 13. sealing ring; 14. connecting flange. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] As attached Figures 1 to 4 The inner ring and contour ring integrated hub unit bearing shown in the figure comprises a bearing unit assembly 1, an inner ring 2, an outer ring 3, a lubrication ring groove 8 and a straight oil groove 9, the inner cavity of the inner ring 2 is provided with a drive shaft cavity 21, steel balls 4 are arranged between the inner ring 2 and the outer ring 3, and the steel balls 4 are arranged in a plurality of groups, the lubrication ring groove 8 is arranged on the left side of the inner surface of the drive shaft cavity 21, and the straight oil groove 9 is arranged at the center of the inner cavity of the drive shaft cavity 21;

[0025] An oil inlet hole 10 is formed at the upper end of the lubrication ring groove 8 , a sealing ring 13 is provided on the upper end surface of the oil inlet hole 10 , a threaded hole 11 is formed above the sealing ring 13 , and a bolt 12 is installed in the inner cavity of the threaded hole 11 .

[0026] Among them: when the user needs to replenish lubricating oil, since the bolt 12 engages the threaded hole 11 and blocks the oil inlet hole 10, the user only needs to rotate the bolt 12 to remove it from the threaded hole 11 cavity to unlock the oil inlet hole 10, so as to quickly and conveniently replenish the oil. After rotating to open the oil inlet hole 10, the new lubricating oil quickly flows into the lubrication ring groove 8 through the oil inlet hole 10. Since the lubrication ring groove 8 is connected with the straight oil groove 9 in the drive shaft cavity 21, after the oil circulates in the lubrication ring groove 8, it can effectively cover various working surfaces through the straight oil groove 9, thereby achieving thorough lubrication, providing a lubrication basis for the entire drive shaft cavity 21, and reducing friction and wear.

[0027] Example 2

[0028] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 4 As shown, see the following description for details:

[0029] As a preferred embodiment, the inner ring 2 is arranged at the right end of the bearing unit assembly 1, and the outer ring 3 is arranged on the outer surface of the inner ring 2. The outer surface of the right end of the bearing unit assembly 1 is provided with a connecting flange 14, and retaining frames 5 are provided at both ends of the outer ring 3; further, the outer ring 3 is the external structure of the hub unit, which is connected to the wheel and bears the load from the wheel, while providing a stable rolling surface so that the steel ball 4 can roll smoothly thereon. The inner ring 2 is mainly fixed to the wheel hub, providing a rolling path for the steel ball 4 and helping to transfer the load to the outer ring 3. The connecting flange 14 installs the bearing unit assembly 1 in the automobile transmission system, and the retaining frame 5 fixes the position of the steel ball 4 to prevent collision or extrusion between the steel balls 4.

[0030] As a preferred embodiment, the lubrication ring groove 8 is connected to the straight oil groove 9, and the oil inlet hole 10 is connected to the lubrication ring groove 8; further, the connection design between the lubrication ring groove 8 and the straight oil groove 9 ensures that the lubrication oil can be evenly distributed to each component that needs lubrication, and enters the lubrication ring groove 8 through the oil inlet hole 10.

[0031] As a preferred embodiment, the bolt 12 and the threaded hole 11 are threadedly connected, and the bolt 12 penetrates the threaded hole 11 and abuts against the sealing ring 13; further, the bolt 12 can be engaged and fixed in the threaded hole 11 and abut against the surface of the sealing ring 13, thereby blocking the oil inlet hole 10.

[0032] As a preferred embodiment, a first sealing ring 6 is provided on the left side of the inner surface of the drive shaft cavity 21, and a second sealing ring 7 is provided on the right side of the inner surface of the drive shaft cavity 21, and the first sealing ring 6 and the second sealing ring 7 constitute a double sealing structure; further, the double sealing structure composed of the first sealing ring 6 and the second sealing ring 7 effectively prevents the leakage of lubricating oil or other fluids, ensures the reliability of the sealing performance, and prevents external contaminants from entering the drive shaft cavity 21, thereby keeping the lubricating oil clean.

[0033] As a preferred embodiment, the first sealing ring 6, the second sealing ring 7 and the sealing ring 13 are all made of rubber material, and several groups of steel balls 4 are equidistantly spaced around the inner ring 2 and the outer ring 3; further, the first sealing ring 6, the second sealing ring 7 and the sealing ring 13 made of rubber material provide a stable sealing effect, and several groups of steel balls 4 act as rolling bodies, rolling between the inner ring 2 and the outer ring 3, which can effectively disperse the load, while reducing friction loss, thereby improving the operating efficiency and service life of the wheel hub.

[0034] The working process of the utility model is as follows: first, the outer ring 3 is the external structure of the wheel hub unit, which is connected to the wheel and bears the load from the wheel. At the same time, it provides a stable rolling surface so that the steel ball 4 can roll smoothly on it. The inner ring 2 is mainly fixed to the wheel hub, providing a rolling path for the steel ball 4 and helping to transfer the load to the outer ring 3. The retaining frame 5 fixes the position of the steel ball 4. The connecting flange 14 installs the bearing unit assembly 1 in the automobile transmission system. When the user needs to add lubricating oil, since the bolt 12 engages the threaded hole 11 and abuts against the surface of the sealing ring 13 to block the oil inlet hole 10, only the bolt 12 needs to be rotated to close the oil inlet hole 10. The bolt 12 is taken out from the threaded hole 11 to unlock the oil inlet 10, so that the oil can be replenished quickly and conveniently. After the oil inlet 10 is opened, the new lubricating oil quickly flows into the lubrication ring groove 8 through the oil inlet 10. Since the lubrication ring groove 8 is connected with the straight oil groove 9 in the drive shaft cavity 21, the oil circulates in the lubrication ring groove 8 and can effectively cover the surface of the drive shaft through the straight oil groove 9, thereby achieving thorough lubrication. The double sealing structure composed of the first sealing ring 6 and the second sealing ring 7 effectively prevents the leakage of lubricating oil or other fluids. The above is the working principle of the inner ring contour ring integrated hub unit bearing.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An inner ring and contour ring integrated hub unit bearing, comprising a bearing unit assembly (1), an inner ring (2), an outer ring (3), a lubrication ring groove (8) and a straight oil groove (9), characterized in that: The inner ring (2) is arranged at the right end of the bearing unit assembly (1); the inner cavity of the inner ring (2) is provided with a drive shaft cavity (21); the outer ring (3) is arranged on the outer surface of the inner ring (2); a steel ball (4) is arranged between the inner ring (2) and the outer ring (3); the steel ball (4) is arranged in a plurality of groups; the lubrication ring groove (8) is arranged on the left side of the inner surface of the drive shaft cavity (21); and the straight oil groove (9) is arranged at the center of the inner cavity of the drive shaft cavity (21); An oil inlet hole (10) is provided at the upper end of the lubricating ring groove (8), a sealing ring (13) is provided on the upper end surface of the oil inlet hole (10), a threaded hole (11) is provided above the sealing ring (13), and a bolt (12) is installed in the inner cavity of the threaded hole (11).

2. The inner ring and contour ring integrated hub unit bearing according to claim 1, characterized in that: The outer surface of the right end of the bearing unit assembly (1) is provided with a connecting flange (14), and both ends of the outer ring (3) are provided with retaining frames (5).

3. The inner ring and contour ring integrated hub unit bearing according to claim 1, characterized in that: The lubrication ring groove (8) is communicated with the straight oil groove (9), and the oil inlet hole (10) is communicated with the lubrication ring groove (8).

4. The inner ring and contour ring integrated hub unit bearing according to claim 1, characterized in that: The bolt (12) and the threaded hole (11) are threadedly connected, and the bolt (12) penetrates the threaded hole (11) and abuts against the sealing ring (13).

5. The inner ring and contour ring integrated hub unit bearing according to claim 1, characterized in that: A first sealing ring (6) is provided on the left side of the inner surface of the drive shaft cavity (21), and a second sealing ring (7) is provided on the right side of the inner surface of the drive shaft cavity (21). The first sealing ring (6) and the second sealing ring (7) form a double sealing structure.

6. The inner ring and contour ring integrated hub unit bearing according to claim 5, characterized in that: The first sealing ring (6), the second sealing ring (7) and the sealing ring (13) are all made of rubber material, and a plurality of groups of steel balls (4) are arranged in an equidistant manner around the inner ring (2) and the outer ring (3).

Images