CN203067557U - Four-lip combined type sealing structure and wheel hub bearing unit - Google Patents
Four-lip combined type sealing structure and wheel hub bearing unit Download PDFInfo
- Publication number
- CN203067557U CN203067557U CN 201320042081 CN201320042081U CN203067557U CN 203067557 U CN203067557 U CN 203067557U CN 201320042081 CN201320042081 CN 201320042081 CN 201320042081 U CN201320042081 U CN 201320042081U CN 203067557 U CN203067557 U CN 203067557U
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- lip
- wheel hub
- sealing
- sealing lip
- cavity
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Abstract
The utility model provides a four-lip combined type sealing structure and a wheel hub bearing unit. The four-lip combined type sealing structure comprises an L-shaped inner framework, an L-shaped outer framework and a cavity, wherein the cavity is formed by the enclosure of the L-shaped inner framework and the L-shaped outer framework, the edge of the cavity is provided with a gap, a multi-lip sealing structure is arranged inside the cavity and has a four-lip structure, the root of the four-lip structure is connected with the inner framework into a whole, the end parts of a first sealing lip and a second sealing lip are sequentially matched on the side surface of the outer framework, the end parts of a third sealing lip and a fourth sealing lip are sequentially matched on the bottom surface of the outer framework, and the cavity is separated into four spaces by the four-lip structure, the inner framework and the outer framework. The four-lip combined type sealing structure is used on the third-generation wheel hub bearing unit, and when a bearing rotates at a high speed, the sealing structure gives out little heat, is narrow in temperature rise range, has the capability of efficiently preventing external mud and dust, and also can effectively prevent the leakage of lubricating grease so as to meet the service life need of the wheel hub bearing unit and achieve the permanent sealing effect.
Description
Technical field
The utility model relates to the auto parts machinery field, is specially a kind of four lip combined seal structure and hub-bearing units for the automobile hub bearing sealing.
Background technique
Combined labyrinth and carbon gland is according to the design of the structural feature of hub-bearing unit, it belongs to low moment of torsion formula sealing, friction torque is less, heating is few, temperature rise is lower, and the excellent ability of resisting external mud, dust is arranged, and the ability that prevents that preferably lubricating grease from leaking is also arranged, can satisfy the high reliability of hub-bearing unit, reach the effect of permanent seal.Chinese patent discloses a kind of combined type labyrinth seal, and (publication number: CN 2411388Y), an end of skeleton is provided with the static seal circle body outside, and the main lip interference fit of static seal circle body is in the inboard of inner frame; And be provided with the motive sealing circle body at an end of inner frame; The lateral lip that its outer periphery arranges and outer lip difference interference fit are in the inboard of outer skeleton.The lateral lip of motive sealing circle body can be fixed against on the quiet side of outer skeleton; Outer lip is crooked laterally, and is fixed against on the outside of outer skeleton.The lateral lip of motive sealing circle body is fixed against on the outside of outer skeleton.In addition, the static seal circle body is provided with a secondary lip that stretches to inner frame inner edge inboard.But this sealing configuration friction torque is bigger, and sealing effect is relatively poor, and when the gas pressure of bearing interior space raises, causes the external and internal pressure difference big easily, makes lubricating grease leak.
The model utility content
The purpose of this utility model is exactly the defective that exists at prior art, provide that a kind of friction torque is less, good sealing effect and lubricating grease leaks the four lip combined seal structures that are not easy to leak, and the hub-bearing unit of using above-mentioned four lip combined seal structures.
A kind of four lip combined seal structures at first are provided, and its structure is: comprise that L shaped inside and outside skeleton and the two surround the cavity that the marginal zone that forms has the space, cavity inside is provided with the multi-lip seal structure; Described multi-lip seal structure is four procheilon structures, root and the inner frame of described four procheilon structures connect as one, wherein the end of first sealing lip and second sealing lip is engaged on the side of outer skeleton successively, the end of the 3rd sealing lip and the 4th sealing lip is engaged on the bottom surface of outer skeleton successively, and four procheilon structures and inside and outside skeleton are spaced apart four spaces with cavity.
Such scheme further is improved to:
Described first sealing lip and second sealing lip all are interference fitted on the side of outer skeleton obliquely, and described the 3rd sealing lip and the 4th sealing lip homocline are engaged in downwards on the bottom surface of outer skeleton, and the bottom surface of the 4th sealing lip and outer skeleton is Spielpassung.
A kind of hub-bearing unit of using above-mentioned four lip combined seal structures below is provided, its concrete structure is: include flange plate, the wheel hub inner ring that the flange plate outside is provided with the wheel hub outer ring and matches, be equipped with steel ball by retainer between wheel hub outer ring and the wheel hub inner ring, four lip combined type packing rings are assemblied in the end of wheel hub outer ring and inner ring; Described wheel hub outer ring also is provided with sensor.
Compared with prior art, the utlity model has following advantage: when bearing rotates at a high speed, the sealing configuration heating is few, the intensification scope is little, has the ability of resisting outside mud, dust efficiently, can prevent effectively that also lubricating grease from leaking, satisfy the requirements for life of hub-bearing unit, reach the effect of permanent seal.For overall sealing performance, Applicable scope and the efficiency of assembling of unit, it is a kind of comparatively ideal sealing configuration.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model structural representation;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is a kind of embodiment's of the utility model assembling schematic representation;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Among the figure: the outer skeleton of 1-, 2-inner frame, 3-gap, 4-four procheilon structure roots, 5-first sealing lip, 6-second sealing lip, 7-the 3rd sealing lip, 8-the 4th sealing lip, 9-space one, 10-space two, 11-space three, 12-space four, 13-four lip combined seal structures and hub-bearing unit, 14-wheel hub outer ring, 15-wheel hub inner ring, 16-flange plate, 17-retainer, 18-steel ball, 19-sensor.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1-2, a kind of four lip combined seal structures, comprise L shaped inside and outside skeleton 2,1 and the two marginal zone that surround to form the cavity in space 3 is arranged, cavity inside is provided with the multi-lip seal structure; The multi-lip seal structure is four procheilon structures, four procheilon structure roots 4 connect as one with inner frame 2, wherein first sealing lip 5 and second sealing lip 6 all are interference fitted on the side of outer skeleton 1 obliquely, the 3rd sealing lip 7 and the 4th sealing lip 8 homoclines are engaged in downwards on the bottom surface of outer skeleton 1, and the bottom surface of the 4th sealing lip 8 and outer skeleton 1 is Spielpassung; Four procheilon structures and inside and outside 2,1 skeleton are spaced apart four spaces with cavity, are followed successively by space 1, space 2 10, space 3 11 and space 4 12.
During use, as Fig. 3-4, a kind of hub-bearing unit that above-mentioned four lip combined seal structures are installed, it includes flange plate 16, the wheel hub inner ring 15 that flange plate 16 outsides are provided with wheel hub outer ring 14 and match, be equipped with steel ball 18 by retainer 17 between wheel hub outer ring 14 and the wheel hub inner ring 15, four lip combined type packing rings 13 be assemblied in the end of wheel hub outer ring 14 and inner ring 15.First sealing lip 5 and second sealing lip 6 are bigger with the angle of bearing unit shaft axis, and contact magnitude of interference and area of contact are bigger, and contact force is less, can effectively reduce friction torque, the more important thing is and has strengthened sealing effect.When the bearing rotation, when temperature raises, the gas pressure of bearing interior space raises, because the 4th sealing lip 8 is Spielpassung with outer skeleton 1 down, do not form obstruction, in internal pressure hour, just form the passage discharge that leaks by the 3rd sealing lip 7 and the 4th sealing lip 8, because the external and internal pressure difference is less, can prevent the leakage of lubricating grease.External mud, dust will enter by gap 7; when external mud, when dust will enter by the gap; at first be stranded in space 1; after space 1 is filled with; could enter bearing inside via space 2 10, space 3 11, space 4 12; because there is storing function in space 1, space 2 10, space 3 11 and space 4 12, so can more effectively protect bearing inside to exempt from the invasion of external mud, dust.
The mechanism of above-mentioned four lip combined labyrinth and carbon glands has the following advantages:
1, sealing configuration is oversimplified, and has adopted many lips rubber sealing structure, and first prevents the function that bearing cavity lubricating grease leaks; Second can stop outside mud, dust to immerse, and the bearing unit internal structure is kept clean;
2, suitable rubber material, lip and magnitude of interference can be guaranteed optimal compression power and the low friction moment of sealing lip;
3, the lubricated space of sealed lip is enough big, can hold abundant lubricating grease, effectively protects sealing lip;
4, special framework material helps to improve the reliability of corrosion resistance and sealing.
For those skilled in the art, under the prerequisite that does not break away from the utility model principle, might be to concrete size, perhaps partial structurtes are made some improvements and modifications, and these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. lip combined seal structure, comprise that L shaped inside and outside skeleton and the two surround the cavity that the marginal zone that forms has the space, cavity inside is provided with the multi-lip seal structure, it is characterized in that: described multi-lip seal structure is four procheilon structures, root and the inner frame of described four procheilon structures connect as one, wherein the end of first sealing lip and second sealing lip is engaged on the side of outer skeleton successively, the end of the 3rd sealing lip and the 4th sealing lip is engaged on the bottom surface of outer skeleton successively, and four procheilon structures and inside and outside skeleton are spaced apart four spaces with cavity.
2. four lip combined seal structures according to claim 1, it is characterized in that: described first sealing lip and second sealing lip all are interference fitted on the side of outer skeleton obliquely, described the 3rd sealing lip and the 4th sealing lip homocline are engaged in downwards on the bottom surface of outer skeleton, and the bottom surface of the 4th sealing lip and outer skeleton is Spielpassung.
3. application rights requires the hub-bearing unit of 1 or 2 described four lip combined seal structures, it is characterized in that: include flange plate, the wheel hub inner ring that the flange plate outside is provided with the wheel hub outer ring and matches, be equipped with steel ball by retainer between wheel hub outer ring and the wheel hub inner ring, four lip combined type packing rings are assemblied in the end of wheel hub outer ring and inner ring; Described wheel hub outer ring also is provided with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042081 CN203067557U (en) | 2013-01-27 | 2013-01-27 | Four-lip combined type sealing structure and wheel hub bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042081 CN203067557U (en) | 2013-01-27 | 2013-01-27 | Four-lip combined type sealing structure and wheel hub bearing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067557U true CN203067557U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320042081 Expired - Fee Related CN203067557U (en) | 2013-01-27 | 2013-01-27 | Four-lip combined type sealing structure and wheel hub bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498867A (en) * | 2013-09-01 | 2014-01-08 | 南通儒尚电动车科技有限公司 | Ball bearing device for wheel hub |
| CN108488242A (en) * | 2018-05-30 | 2018-09-04 | 湖北新火炬科技有限公司 | A kind of Combined hub bearing unit sealing element |
-
2013
- 2013-01-27 CN CN 201320042081 patent/CN203067557U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498867A (en) * | 2013-09-01 | 2014-01-08 | 南通儒尚电动车科技有限公司 | Ball bearing device for wheel hub |
| CN108488242A (en) * | 2018-05-30 | 2018-09-04 | 湖北新火炬科技有限公司 | A kind of Combined hub bearing unit sealing element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20190127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |