Hub bearing sealing structure

Abstract

The utility model relates to a hub bearing sealing structure, which belongs to the technical field of bearing sealing equipment and comprises an outer ring, an inner ring, an inner connecting ring and a roller, the roller is positioned on the inner side of the outer ring and on the outer side of the inner ring, and a first sealing structure is arranged on the inner side of the joint of the outer ring and the inner ring. A second sealing structure is arranged on the outer side of the joint of the outer ring and the inner ring, and the first sealing structure is arranged on one side of the second sealing structure. The hub bearing has the advantages that the first sealing structure and the second sealing structure are arranged, the gap between the inner ring and the outer ring of the hub bearing is primarily sealed through the inner side sealing ring, and the first framework and the second framework are inserted into the first inserting ring and the second inserting ring respectively; and meanwhile, the second sealing structure is adopted for secondary sealing, and the sealing oil layer is injected into the cavity formed by the second framework, so that the sealing performance of the hub bearing is better, and the sealing strength of the hub bearing is better.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing sealing equipment, in particular to a hub bearing sealing structure. Background Art

[0002] The wheel hub bearing is mainly responsible for bearing weight and providing precise guidance for the rotation of the automobile wheel hub. It bears both axial and radial loads and is an important component. The wheel hub bearing is a sealed bearing with a sealing ring. The working environment of the automobile wheel hub unit is harsh, and it is constantly accompanied by huge impact loads and operates under vibration conditions. There is intense heat exchange inside and outside the bearing, so the wheel hub bearing needs to be sealed.

[0003] The wheel hub bearing seals of the prior art still have the following disadvantages: during use, automobile wheel hub bearings often fail to seal due to the intrusion of muddy water or moisture in the outside air, which in turn causes leakage of the lubricating oil inside the bearings, resulting in stronger friction between the wheel hub bearings and abnormal noise, which in turn causes user complaints and claims. Utility Model Content

[0004] To solve the problems raised in the above background technology. The utility model provides a wheel hub bearing sealing structure, which has a sealing structure 1, and is used to solve the problem that the automobile wheel hub bearing often fails to seal due to the intrusion of muddy water or moisture in the outside air during use, and then the lubricating oil inside the bearing leaks, thereby causing the friction between the wheel hub bearing to be stronger, abnormal noise occurs, and thus causes user complaints and claims.

[0005] The technical solution of the utility model is: a wheel hub bearing sealing structure, comprising an outer ring, an inner ring, an inner connecting ring and a roller, wherein the roller is located inside the outer ring and outside the inner ring, a sealing structure 1 is arranged inside the connection between the outer ring and the inner ring, a sealing structure 2 is arranged outside the connection between the outer ring and the inner ring, and the sealing structure 1 is arranged on one side of the sealing structure 2;

[0006] The sealing structure 1 includes skeleton 1, skeleton 2, plug-in ring 1, plug-in ring 2, connecting sleeve, cross reinforcing ribs and inner sealing ring. One group of plug-in ring 1 is embedded in the inner wall of the outer ring, and the other group of plug-in ring 1 is embedded in the outer wall of the inner ring. One end of the skeleton 1 is limitedly inserted into the interior of plug-in ring 1, and one end of the skeleton 2 is limitedly inserted into the interior of plug-in ring 2. The other end of the skeleton 2 is fixedly connected to the inner sealing ring. A through hole is opened in the interior of the skeleton 2. One end of the connecting sleeve is fixedly connected to the inner sealing ring, and cross reinforcing ribs are fixedly installed on the inner wall of the connecting sleeve.

[0007] Furthermore, a collar is fixedly mounted on the outer side wall of the outer ring, and a plug-in block 1 is fixedly mounted on the outside of the collar.

[0008] Furthermore, the inner connecting ring is fixedly mounted on the inner wall of the inner ring, and a plug-in block 2 is fixedly mounted on the inner wall of the inner connecting ring.

[0009] Furthermore, the sealing structure 2 includes a sealing plate 2, a sealing plate 1, an outer sealing ring, a threaded ring 1, a limiting ring, a sealing ring, a water absorption layer and an injection hole, a limiting ring is fixedly installed on the outer wall of one side of the sealing plate 1, and one group of limiting rings is arranged inside the outer ring, and the other group of limiting rings is arranged inside the inner ring, the threaded ring 1 is threadedly installed inside the sealing plate 1, and the other side of the threaded ring 1 is fixedly installed on the outer wall of the sealing plate 1.

[0010] Furthermore, a groove is opened on the outer wall of one side of the sealing plate 2, the sealing ring and the water absorption layer are both arranged inside the groove, the outer sealing ring is embedded in the inside of one side wall of the sealing plate 1 and is located on the outside of the sealing ring, and an injection hole is opened inside the sealing plate 1 for connecting the sealing plate 1 with the cavity at the connection between the outer ring and the inner ring.

[0011] Furthermore, one group of the plug-in rings 2 are embedded in the inner wall of the outer ring, and another group of the plug-in rings 2 are embedded in the outer wall of the inner ring. The connecting sleeve, frame 1 and frame 2 are fixedly installed on the outer wall of one side of the sealing plate 2.

[0012] The utility model provides a hub bearing sealing structure through improvement, which has the following improvements and advantages compared with the prior art:

[0013] By providing sealing structure one and sealing structure two, the gap between the inner ring and the outer ring of the wheel hub bearing is initially sealed by the inner sealing ring, and the skeleton one and the skeleton two are respectively plugged into the inside of the plug-in ring one and the plug-in ring two, thereby sealing the gap between the inner ring and the outer ring of the wheel hub bearing for a second time. At the same time, the sealing structure two is used for re-sealing, and a sealing oil layer is injected into the cavity formed by the skeleton two, so that the wheel hub bearing has better sealing performance and better sealing strength, and it is not easy for muddy water or moisture in the outside air to invade and cause seal failure, thereby greatly reducing the leakage of lubricating oil inside the bearing, so that it is not easy to cause stronger friction between the wheel hub bearings and abnormal noise, greatly improving the service life of the bearing and reducing the probability of user complaints and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a main schematic diagram of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 4 For the utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0019] Explanation of the reference numerals: 1. Outer ring; 2. Inner ring; 3. Roller; 4. Ring; 5. Plug-in block one; 6. Inner ring; 7. Plug-in block two; 8. Sealing plate two; 9. Sealing plate one; 10. Outer sealing ring; 11. Threaded ring one; 12. Limiting ring; 13. Sealing ring; 14. Water-absorbing layer; 15. Injection hole; 16. Connecting sleeve; 17. Cross reinforcement rib; 18. Inner sealing ring; 19. Skeleton one; 20. Plug-in ring one; 21. Plug-in ring two; 22. Skeleton two. DETAILED DESCRIPTION

[0020] The following will be combined with the attached Figures 1 to 4 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0021] The utility model provides a hub bearing sealing structure through improvement, such as Figure 1-4 As shown in the figure, it includes an outer ring 1, an inner ring 2, an inner ring 6 and a roller 3. The roller 3 is located on the inner side of the outer ring 1 and on the outer side of the inner ring 2. A sealing structure 1 is provided on the inner side of the connection between the outer ring 1 and the inner ring 2, and a sealing structure 2 is provided on the outer side of the connection between the outer ring 1 and the inner ring 2. The sealing structure 1 is provided on one side of the sealing structure 2.

[0022] Sealing structure 1 includes skeleton 19, skeleton 22, plug-in ring 120, plug-in ring 21, connecting sleeve 16, cross reinforcing ribs 17 and inner sealing ring 18. One group of plug-in rings 20 are embedded in the inner wall of outer ring 1, and the other group of plug-in rings 20 are embedded in the outer wall of inner ring 2. One end of skeleton 19 is limitedly inserted into the inside of plug-in ring 120, and one end of skeleton 22 is limitedly inserted into the inside of plug-in ring 21. The other end of skeleton 22 is fixedly connected to the inner sealing ring 18. A through hole is opened in the inside of skeleton 22. One end of connecting sleeve 16 is fixedly connected to the inner sealing ring 18. Cross reinforcing ribs 17 are fixedly installed on the inner wall of connecting sleeve 16. One group of plug-in rings 21 are embedded in the inner wall of outer ring 1, and the other group of plug-in rings 21 are embedded in the outer wall of inner ring 2. Connecting sleeve 16, skeleton 19 The skeleton 22 is fixedly mounted on the outer wall of one side of the sealing plate 8, and the sealing structure 1 and the sealing structure 2 are provided, and the gap between the inner ring 2 and the outer ring 1 of the wheel hub bearing is initially sealed through the inner sealing ring 18, and the skeleton 1 19 and the skeleton 2 22 are respectively plugged into the inside of the plug-in ring 1 20 and the plug-in ring 2 21, so as to seal the gap between the inner ring 2 and the outer ring 1 of the wheel hub bearing for a second time, and the sealing structure 2 is used for re-sealing, and a sealing oil layer is injected into the cavity formed by the skeleton 2 22, so that the wheel hub bearing has better sealing performance and better sealing strength, and it is not easy for muddy water or moisture in the external air to invade and cause sealing failure, thereby greatly reducing the leakage of the lubricating oil inside the bearing, so that it is not easy to cause the friction between the wheel hub bearings to be stronger and abnormal noise to occur, greatly improving the service life of the bearing and reducing the probability of user complaints and claims.

[0023] A collar 4 is fixedly mounted on the outer wall of the outer ring 1, a plug-in block 5 is fixedly mounted on the outside of the collar 4, an inner connecting ring 6 is fixedly mounted on the inner wall of the inner ring 2, and a plug-in block 2 7 is fixedly mounted on the inner wall of the inner connecting ring 6. When in use, the plug-in block 1 5 and the plug-in block 2 7 can be installed to suitable equipment accessories by interference fit, and the wheel hub bearing can be used.

[0024] The sealing structure 2 includes a sealing plate 28, a sealing plate 19, an outer sealing ring 10, a threaded ring 11, a limiting ring 12, a sealing ring 13, a water absorbing layer 14 and an injection hole 15. The limiting ring 12 is fixedly installed on the outer wall of one side of the sealing plate 9, and one group of limiting rings 12 is arranged inside the outer ring 1, and the other group of limiting rings 12 is arranged inside the inner ring 2. The threaded ring 11 is threadedly installed inside the sealing plate 9, and the other side of the threaded ring 11 is fixedly installed on the outer wall of the sealing plate 9. A groove is opened on the outer wall of one side of the sealing plate 28, and the sealing ring 13 and the water absorbing layer 14 are both arranged inside the groove. The outer sealing ring 10 is embedded in one side wall of the sealing plate 9 and is located on the outside of the sealing ring 13. An injection hole 15 is opened inside the sealing plate 9 to communicate with the cavity at the connection between the sealing plate 9 and the outer ring 1 and the inner ring 2. The sealing oil layer is injected into the cavity formed by the sealing structure 1 through the injection hole 15, thereby avoiding the leakage of the lubricating oil inside the bearing and the entry of external impurities. It is very convenient and effective to use. At the same time, multiple sealing rings and sealing rings 13 are used for sealing, which greatly improves the sealing performance of the bearing. At the same time, the water absorption layer 14 can absorb moisture in the outside air.

[0025] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wheel hub bearing sealing structure, comprising an outer ring (1), an inner ring (2), an inner ring (6) and a roller (3), characterized in that: The roller (3) is located on the inner side of the outer ring (1) and on the outer side of the inner ring (2); a sealing structure 1 is provided on the inner side of the connection between the outer ring (1) and the inner ring (2); a sealing structure 2 is provided on the outer side of the connection between the outer ring (1) and the inner ring (2); and the sealing structure 1 is provided on one side of the sealing structure 2; The sealing structure 1 comprises a frame 1 (19), a frame 2 (22), a plug-in ring 1 (20), a plug-in ring 2 (21), a connecting sleeve (16), a cross reinforcing rib (17) and an inner sealing ring (18). One group of the plug-in rings 1 (20) is embedded in the inner wall of the outer ring (1), and the other group of the plug-in rings 1 (20) is embedded in the outer wall of the inner ring (2). One end of the frame 1 (19) is limitedly inserted into the inside of the plug-in ring 1 (20), and one end of the frame 2 (22) is limitedly inserted into the inside of the plug-in ring 2 (21). The other end of the frame 2 (22) is fixedly connected to the inner sealing ring (18). A through hole is opened inside the frame 2 (22). One end of the connecting sleeve (16) is fixedly connected to the inner sealing ring (18), and a cross reinforcing rib (17) is fixedly installed on the inner wall of the connecting sleeve (16).

2. The wheel hub bearing sealing structure according to claim 1, characterized in that: A collar (4) is fixedly mounted on the outer side wall of the outer ring (1), and a plug-in block (5) is fixedly mounted on the outside of the collar (4).

3. The wheel hub bearing sealing structure according to claim 1, characterized in that: The inner connecting ring (6) is fixedly mounted on the inner wall of the inner ring (2), and a second plug-in block (7) is fixedly mounted on the inner wall of the inner connecting ring (6).

4. The wheel hub bearing sealing structure according to claim 1, characterized in that: The sealing structure 2 comprises a sealing plate 2 (8), a sealing plate 1 (9), an outer sealing ring (10), a threaded ring 1 (11), a limiting ring (12), a sealing ring (13), a water absorbing layer (14) and an injection hole (15); a limiting ring (12) is fixedly mounted on an outer wall of one side of the sealing plate 1 (9); one group of limiting rings (12) is arranged inside the outer ring (1), and another group of limiting rings (12) is arranged inside the inner ring (2); the threaded ring 1 (11) is threadedly mounted inside the sealing plate 1 (9), and the other side of the threaded ring 1 (11) is fixedly mounted on the outer wall of the sealing plate 1 (9).

5. The wheel hub bearing sealing structure according to claim 4, characterized in that: A groove is formed on the outer wall of one side of the sealing plate 2 (8), and the sealing ring (13) and the water absorbing layer (14) are both arranged inside the groove. The outer sealing ring (10) is embedded inside the wall of one side of the sealing plate 1 (9) and is located outside the sealing ring (13). An injection hole (15) is formed inside the sealing plate 1 (9) for connecting the sealing plate 1 (9) with the cavity at the connection between the outer ring (1) and the inner ring (2).

6. The wheel hub bearing sealing structure according to claim 1, characterized in that: One group of the plug-in rings (21) are embedded in the inner wall of the outer ring (1), and another group of the plug-in rings (21) are embedded in the outer wall of the inner ring (2). The connecting sleeve (16), the frame (19) and the frame (22) are fixedly mounted on the outer wall of one side of the sealing plate (8).

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