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Sealing device for hub bearing

A technology for sealing devices and wheel hub bearings, applied to shafts and bearings, bearing components, casters, etc., can solve problems such as seal wear failure, general sealing performance, grease leakage, muddy water, etc.

Pending Publication Date: 2021-02-26
ZHEJIANG GUNAI RUBBER & PLASTIC SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the traditional sealing device is used to seal the wheel hub bearing, its sealing performance is average. The main reason is: when the lip of the existing sealing ring is loaded, the contact area between the lip of the sealing ring and the retainer becomes larger, resulting in larger torque and energy If the consumption is high, the seal wear failure will occur prematurely, which will affect the performance of the hub bearing; and when the contact area between the lip of the rubber seal ring and the retainer is designed to be too small, the sealing performance will deteriorate, and it is easy to cause grease leakage and muddy water to enter the internal seal of the bearing. lead to hub bearing failure

Method used

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  • Sealing device for hub bearing
  • Sealing device for hub bearing
  • Sealing device for hub bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a sealing device for hub bearings includes a rigid frame 1 for the outer ring, a retaining ring 13 for the inner ring, and a rubber layer 14. The rigid frame 1 for the outer ring is fixedly connected to the rubber layer 14, and the rubber layer 14 has four A protruding sealing lip, the port of the sealing lip is arc-shaped, wherein at least two sealing lips are obliquely abutting against the inner retaining ring 13 .

[0030] The design of the inclined sealing lip can reduce the contact area and reduce energy consumption, and the design of multiple inclined sealing lips can improve its sealing performance. The sealing device for the wheel hub bearing and the wheel hub bearing with this structure can improve the sealing failure caused by wear and improve the sealing performance.

[0031] It can be understood that, in order to match the annular shape of the bearing, the rigid frame 1 of the outer ring, the retaining ring 13 of the inner ring, t...

Embodiment 2

[0041] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that three sealing lips abut against the inner ring retaining ring 13, wherein the first sealing lip 7 and the second sealing lip 6 abut against the inner ring clamping The third sealing lip 5 abuts against the second connecting plate 11 .

Embodiment 3

[0043]Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that four sealing lips abut against the inner ring 13, wherein the first sealing lip 7 and the second sealing lip 6 abut against the inner ring The third sealing lip 5 abuts against the second connecting plate 11 , and the fourth sealing lip 8 abuts against the first blocking plate 10 .

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Abstract

The invention relates to a sealing device for a hub bearing. The sealing device comprises an outer ring rigid framework, an inner ring check ring and a rubber layer, wherein the outer ring rigid framework is fixedly connected with the rubber layer, the rubber layer is provided with four protruding sealing lip pieces, an end opening of each sealing lip piece is in an arc shape, and at least two ofthe sealing lip pieces abut against the inner ring check ring in an inclined manner. Due to the design of the inclined sealing lip pieces, the contact area can be reduced, the energy consumption can be reduced, and the sealing performance is improved through the design of the multiple inclined sealing lip pieces. According to the sealing device for the hub bearing, by the structure, the sealing failure condition caused by abrasion is improved, and the sealing performance is improved.

Description

technical field [0001] The invention relates to a sealing device for a hub bearing, which belongs to the technical field of mechanical bearing sealing. Background technique [0002] Hub bearings are parts applied to the axles of automobiles to bear weight and provide precise guidance for the rotation of the hubs. They bear both axial loads and radial loads, and are an important part of the load and rotation of automobiles. When the hub bearing is working, the end face is directly exposed to the outside and is in contact with external dust and muddy water. Therefore, it is required that the oil and grease cannot leak when the bearing is working; at the same time, the external muddy water cannot enter the inside of the bearing and affect the performance of the sealed bearing. Performance matters. [0003] When the traditional sealing device is used to seal the wheel hub bearing, its sealing performance is average. The main reason is: when the lip of the existing sealing ring ...

Claims

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Application Information

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IPC IPC(8): F16C33/78F16C33/82
CPCF16C33/782F16C33/7823F16C33/783F16C33/82F16C2326/02
Inventor 刘海沈夏雨陈诗江王昌盛施明烁
Owner ZHEJIANG GUNAI RUBBER & PLASTIC SCI & TECH
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