CN103542005A - Automobile hub bearing unit with sealing structure - Google Patents
Automobile hub bearing unit with sealing structure Download PDFInfo
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- CN103542005A CN103542005A CN201310502622.XA CN201310502622A CN103542005A CN 103542005 A CN103542005 A CN 103542005A CN 201310502622 A CN201310502622 A CN 201310502622A CN 103542005 A CN103542005 A CN 103542005A
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- ring
- bearing
- seal
- sealing configuration
- retainer
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Abstract
The invention discloses an automobile hub bearing unit with a sealing structure, belonging to the field of machinery. The automobile hub bearing unit comprises a bearing outer ring, a bearing inner ring, a rolling body, a retainer, a sealing structure and a lock ring, wherein an annular space is formed between the bearing inner ring and the bearing outer ring; a raceway is arranged in the annular space; the rolling body is mounted in the raceway through the retainer; the two side end surfaces of the annular space are sealed by the annular sealing structure; the outer diameter of the sealing structure is in interference fit with the inner diameter of the bearing outer ring and the inner diameter of the sealing structure, as well as the outer diameter of the bearing inner ring; with the sealing structure arranged in the bearing unit, isolation of a bearing working area from the outside is realized, and mud water can be prevented from entering the bearing unit. The bearing inner ring comprises two semi-inner rings symmetrically mounted in parallel; the semi-inner rings are connected and locked by the lock ring, and the thicknesses of the two sides of the semi-inner ring are different; therefore, lubricating grease in the bearing can be prevented from overflowing, and furthermore, the bearing unit is convenient to assemble.
Description
Technical field
The present invention relates to a kind of automobile hub bearing with sealing configuration, belong to mechanical field.
Background technique
Automobile hub bearing is for driving wheel or the non-driving wheel of car, and requiring has higher load-carrying ability, compact structure, non-maintaining, high reliability, so bearing must have good sealability.At present, mainly there is following defect in automobile hub bearing:
1. automobile hub bearing adopts single lip or lips sealing structure circle, do not have anti-muddy water function, and do not have leakproof fat function between bearing two inner rings yet;
Although in the market a lot of automotive hubs with anti-muddy water structure, but the anti-mud water sealing structures that adopt bearing external sealed more, this combination seal, requirement installing space is large, during high the and installation fee of cost, between bearing two inner rings, there is in addition seepage fat phenomenon, so in the urgent need to improving sealing means and the performance of hub-bearing unit more.
In view of this, the inventor studies this, develops specially a kind of automobile hub bearing with sealing configuration, and this case produces thus.
Summary of the invention
The object of this invention is to provide a kind of automobile hub bearing with sealing configuration, there is good sealability, and simple in structure, easy to assembly.
To achieve these goals, solution of the present invention is:
A kind of automobile hub bearing with sealing configuration, comprise bearing outer ring, bearing inner race, rolling element, retainer, sealing configuration and retainer etc., between described bearing inner race and outer ring, form an annular space, in this annular space, be provided with raceway, rolling element is arranged in raceway by retainer; The both sides end face of described annular space is by annular sealing configuration sealing, and wherein, internal diameter and the bearing inner race external diameter of the external diameter of institute's sealing configuration and bearing outer ring internal diameter, sealing configuration are interference fit; Above-mentioned bearing inner race comprises two symmetrical half inner rings of installing side by side, by retainer, is connected and is locked, and wherein the external diameter of retainer inwall and bearing inner race is interference fit, prevents that lubricating grease from flowing out from the gap location of two and half inner rings.
As preferably, described sealing configuration comprises seal ring and is positioned at the back-up ring of seal ring inner side, and described seal ring comprises O-ring seal and is wrapped in the skeleton in O-ring seal; Described bearing outer ring internal diameter both sides offer respectively the concave step that a circle card is established seal ring, and sealing configuration external diameter is arranged in above-mentioned concave step by O-ring seal.
Described O-ring seal comprises the first lip, the second lip and the 3rd lip, described back-up ring cross section is " ㄈ " type, comprise external diameter, internal diameter, and the vertical wall that connects internal-and external diameter, wherein, the inwall interference fit of the first lip, the second lip and back-up ring internal diameter, interference fit inside the 3rd lip and back-up ring vertical wall, the external diameter interference fit of the outer wall of back-up ring internal diameter and bearing inner race, back-up ring is buckled between seal ring and bearing inner race, effectively prevents that fat phenomenon from appearring leaking in bearing unit.
As preferably, last time, the concave step of bearing outer ring was further provided with a groove near raceway end, the O-ring seal external diameter of seal ring is provided with the boss of a correspondence, the cooperation of groove and boss, make the better tightness of seal ring and bearing outer ring, make seal ring more be fixedly mounted between bearing inner race and outer ring simultaneously, prevent displacement.
As preferably, above-mentioned sealing configuration comprises seal ring and is positioned at the oil thrower in seal ring outside, described seal ring and oil thrower include O-ring seal and are wrapped in the skeleton in O-ring seal, described bearing outer ring internal diameter both sides offer respectively the groove that a circle card is established seal ring, the free-ended external diameter in bearing half inner ring outside is provided with the groove that a circle card is established oil thrower, wherein, seal ring external diameter is arranged on by O-ring seal in the dust sealing groove of bearing outer ring, the outward-dipping turnover of internal diameter of O-ring seal and with bearing inner race external diameter interference fit; The internal diameter of oil thrower is arranged on by O-ring seal in the dust sealing groove of bearing inner race, the outer radial outer incline of O-ring seal turnover and with bearing outer ring internal diameter interference fit.
The turnover of outer radial outer incline and the bearing outer ring internal diameter interference fit of above-mentioned O-ring seal, such design can increase elasticity, reduces frictional force.
The cross section of above-mentioned skeleton is L shaped, and the stage casing of O-ring seal is supported fixing by skeleton.Described O-ring seal adopts nitrile butadiene rubber circle, and the skeleton on seal ring and back-up ring all adopt 2Cr13 steel to make.
The internal diameter of described bearing half inner ring connecting end is inwardly provided with a concave step, the concave step of two and half inner rings forms a groove, described retainer is " one " font, be arranged in above-mentioned groove, wherein the external diameter of retainer inwall and bearing inner race is interference fit, prevent that lubricating grease from flowing out from the gap location of two and half inner rings, above-mentioned retainer comprises that engineering plastics are outer, and is bonded in the nitrile rubber internal layer on the outer internal diameter of engineering plastics.
The internal diameter of described bearing half inner ring connecting end is inwardly provided with a groove, and described retainer is " ㄇ " type, and its two ends are arranged in the groove of two and half inner rings, the external diameter interference fit of retainer inwall and bearing inner race connecting end.Prevent that lubricating grease from flowing out from the gap location of two and half inner rings, above-mentioned retainer adopts engineering plastics to make.
Above-mentioned bearing half inner ring connecting end thickness is less than the free-ended thickness in outside, and non-so same Thickness Design can make bearing unit more convenient when assembling.
Described rolling element is spherical rolling body, and retainer adopts glass fibre reinforced nylon retainer, and described outer ring, inner ring, rolling element all adopt GCr15 steel to make.
After adopting technique scheme, the present invention is if any advantage:
1. by being arranged on the seal ring in bearing unit, back-up ring or oil thrower, solved bearing working district and extraneous isolating problem, can prevent that muddy water from entering bearing unit inside, is specially adapted to use on rainy day and the peaceful road of mud;
2. above-mentioned bearing inner race adopts two and half inner rings to form, and connects locking with retainer, and half inner ring thickness of two sides is different, can prevent that the lubricating grease in bearing from overflowing on the one hand, can make on the other hand bearing unit more convenient when assembling.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is embodiment 1 automobile hub bearing structural representation;
Fig. 2 is seal ring and the back-up ring structural representation of the present embodiment 1 and 2;
Fig. 3 embodiment 2 automobile hub bearing structural representation;
Fig. 4 embodiment 3 automobile hub bearing structural representation;
Fig. 5 is embodiment 3 seal ring and oil thrower mounting structure schematic diagram.
Embodiment
embodiment 1
Figure is as shown in 1-2, a kind of automobile hub bearing with sealing configuration, comprise bearing outer ring 1, bearing inner race 2, rolling element 3, retainer 4, sealing configuration and retainer 7 etc., between described bearing inner race 2 and outer ring 1, form an annular space, in this annular space, be provided with raceway, rolling element 3 is arranged in raceway by retainer 4; The both sides end face of described annular space is by annular sealing configuration sealing, and wherein, internal diameter and bearing inner race 2 external diameters of the external diameter of institute's sealing configuration and bearing outer ring 1 internal diameter, sealing configuration are interference fit; Above-mentioned bearing inner race 2 comprises two symmetrical half inner rings of installing side by side, by retainer 7, is connected and is locked.
In the present embodiment, described sealing configuration comprises seal ring 6 and the back-up ring 5 that is positioned at seal ring 6 inner sides, and described seal ring 6 comprises O-ring seal 61 and is wrapped in the skeleton 62 in O-ring seal; Above-mentioned O-ring seal 61 comprises the first lip 611, the second lip 612 and the 3rd lip 613, described back-up ring 5 cross sections are " ㄈ " type, comprise external diameter 52, internal diameter 51, and the vertical wall 53 that connects internal-and external diameter, wherein, the inwall interference fit of the first lip 611, the second lip 612 and back-up ring internal diameter 51, the 3rd lip 613 and back-up ring vertical wall 53 inner side interference fit.Bearing outer ring 1 internal diameter both sides offer respectively the concave step 11 that a circle card is established seal ring 6, and sealing configuration external diameter is arranged in above-mentioned concave step 11 by O-ring seal 61, and internal diameter is the external diameter interference fit with bearing inner race 2 by back-up ring internal diameter 51.By being arranged on the seal ring 6 in bearing unit, back-up ring 5, has solved bearing working district and extraneous isolating problem, can prevent that muddy water from entering bearing unit inside, is specially adapted to use on rainy day and the peaceful road of mud.
Last time, bearing outer ring 1 concave step 11 was further provided with a groove 12 near raceway end, O-ring seal 61 external diameters of seal ring 6 are provided with the boss 614 of a correspondence, the cooperation of groove 12 and boss 614, make the better tightness of seal ring 6 and bearing outer ring 1, make seal ring 6 more be fixedly mounted between bearing inner race and outer ring simultaneously, prevent displacement.
The cross section of above-mentioned skeleton 62 is L shaped, and the stage casing of O-ring seal 61 is supported fixing by skeleton 62.Described O-ring seal 61 adopts nitrile butadiene rubber circle, and skeleton 62 and back-up ring 5 all adopt 2Cr13 steel to make.
The internal diameter of described bearing half inner ring 2 connecting end 22 is inwardly provided with a concave step 23, the concave step 23 of two and half inner rings forms a groove, described retainer is " one " font, be arranged in above-mentioned groove, retainer 7 comprises that engineering plastics are outer, with the nitrile rubber internal layer being bonded on the outer internal diameter of engineering plastics, wherein the nitrile rubber internal layer of retainer 7 and the external diameter of bearing inner race 2 are interference fit, prevent that lubricating grease from flowing out from the gap location of two and half inner rings.Above-mentioned bearing half inner ring 2 connecting end 22 thickness are less than the thickness of outside free end 21, and non-so same Thickness Design can make bearing unit more convenient when assembling.Above-mentioned bearing inner race 2 adopts two and half inner rings to form, and connects locking with retainer 7, and half inner ring thickness of two sides is different, can prevent that the lubricating grease in bearing from overflowing on the one hand, can make on the other hand bearing unit more convenient when assembling.
Described rolling element 3 is spherical rolling body, and retainer 4 adopts glass fibre reinforced nylon retainer, and described outer ring 1, inner ring, 2 rolling elements 3 all adopt GCr15 steel to make.
A kind of automobile hub bearing with sealing configuration of the present embodiment, its structure is with embodiment 1, and difference is:
As shown in Figure 3, the internal diameter of bearing half inner ring connecting end 22 is inwardly provided with groove 23 ＇, described retainer 7 ＇ are " ㄇ " type, its two ends are arranged in groove 23 ＇ of two and half inner rings, the external diameter interference fit of retainer 7 ＇ inwalls and bearing inner race 2 connecting ends 22, prevent that lubricating grease from flowing out from the gap location of two and half inner rings, retainer 7 ＇ adopt engineering plastics to make.
" ㄇ " type of employing retainer 7 ＇ can more effectively pin two inner rings, make both inseparable.
A kind of automobile hub bearing with sealing configuration of the present embodiment, its structure is with embodiment 1, and difference is:
As shown in Fig. 4-5, described sealing configuration comprises the oil thrower 5 in seal ring 6 " and being positioned at seal ring 6 " outside ", described seal ring 6 " and oil thrower 5 " includes O-ring seal 61 ", skeleton 62 in 51 " and being wrapped in O-ring seal 61 " ", 52 ", bearing outer ring 1 internal diameter both sides offer respectively a circle card and establish seal ring 6 " groove 11 ", the external diameter of the free end 21 in bearing half inner ring 2 outsides is provided with the groove 24 that a circle card is established oil thrower 5 ", wherein, seal ring 6 " external diameter is by O-ring seal 61 " is arranged on the dust sealing groove 11 of bearing outer ring 1 " in, O-ring seal 61 " the outward-dipping turnover of internal diameter and with bearing inner race 2 external diameter interference fit, the outer radial outer incline turnover that oil thrower 5 " internal diameter by O-ring seal 51 " is arranged on the dust sealing groove 24 of bearing inner race 2 " in, O-ring seal 51 " and with bearing outer ring 1 internal diameter interference fit.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present invention.
Claims (10)
1. the automobile hub bearing with sealing configuration, it is characterized in that: comprise bearing outer ring, bearing inner race, rolling element, retainer, sealing configuration and retainer, between described bearing inner race and outer ring, form an annular space, in this annular space, be provided with raceway, rolling element is arranged in raceway by retainer; The both sides end face of described annular space is by annular sealing configuration sealing, and wherein, internal diameter and the bearing inner race external diameter of the external diameter of institute's sealing configuration and bearing outer ring internal diameter, sealing configuration are interference fit; Above-mentioned bearing inner race comprises two symmetrical half inner rings of installing side by side, by retainer, is connected and is locked, and wherein the external diameter of retainer inwall and bearing inner race is interference fit.
2. a kind of automobile hub bearing with sealing configuration as claimed in claim 1, is characterized in that: described sealing configuration comprises seal ring and the back-up ring that is positioned at seal ring inner side, and described seal ring comprises O-ring seal and is wrapped in the skeleton in O-ring seal; Described bearing outer ring internal diameter both sides offer respectively the concave step that a circle card is established seal ring, and sealing configuration external diameter is arranged in above-mentioned concave step by O-ring seal.
3. a kind of automobile hub bearing with sealing configuration as claimed in claim 2, it is characterized in that: described O-ring seal comprises the first lip, the second lip and the 3rd lip, described back-up ring cross section is " ㄈ " type, comprise external diameter, internal diameter, and the vertical wall that connects internal-and external diameter, wherein, the inwall interference fit of the first lip, the second lip and back-up ring internal diameter, interference fit inside the 3rd lip and back-up ring vertical wall, the external diameter interference fit of the outer wall of back-up ring internal diameter and bearing inner race.
4. a kind of automobile hub bearing with sealing configuration as claimed in claim 3, is characterized in that: last time, the concave step of bearing outer ring was further provided with a groove near raceway end, and the O-ring seal external diameter of seal ring is provided with the boss of a correspondence.
5. a kind of automobile hub bearing with sealing configuration as claimed in claim 1, it is characterized in that: above-mentioned sealing configuration comprises seal ring and is positioned at the oil thrower in seal ring outside, described seal ring and oil thrower include O-ring seal and are wrapped in the skeleton in O-ring seal, described bearing outer ring internal diameter both sides offer respectively the groove that a circle card is established seal ring, the free-ended external diameter in bearing half inner ring outside is provided with the groove that a circle card is established oil thrower, wherein, seal ring external diameter is arranged in the dust sealing groove of bearing outer ring by O-ring seal, the outward-dipping turnover of internal diameter of O-ring seal and with bearing inner race external diameter interference fit, the internal diameter of oil thrower is arranged on by O-ring seal in the dust sealing groove of bearing inner race, the outer radial outer incline of O-ring seal turnover and with bearing outer ring internal diameter interference fit.
6. a kind of automobile hub bearing with sealing configuration as described in claim 2 or 5, is characterized in that: the cross section of above-mentioned skeleton is L shaped, and the stage casing of O-ring seal is supported fixing by skeleton.
7. a kind of automobile hub bearing with sealing configuration as described in claim 2 or 5, is characterized in that: described O-ring seal adopts nitrile butadiene rubber circle, and the skeleton on seal ring and back-up ring all adopt 2Cr13 steel to make.
8. a kind of automobile hub bearing with sealing configuration as claimed in claim 1, it is characterized in that: the internal diameter of described bearing half inner ring connecting end is inwardly provided with a concave step, the concave step of two and half inner rings forms a groove, described retainer is " one " font, be arranged in above-mentioned groove, wherein the external diameter of retainer inwall and bearing inner race is interference fit, and above-mentioned retainer comprises that engineering plastics are outer, and is bonded in the nitrile rubber internal layer on the outer internal diameter of engineering plastics.
9. a kind of automobile hub bearing with sealing configuration as claimed in claim 1, it is characterized in that: the internal diameter of described bearing half inner ring connecting end is inwardly provided with a groove, described retainer is " ㄇ " type, its two ends are arranged in the groove of two and half inner rings, the external diameter interference fit of retainer inwall and bearing inner race connecting end, above-mentioned retainer adopts engineering plastics.
10. a kind of automobile hub bearing with sealing configuration as claimed in claim 8 or 9, is characterized in that: described bearing half inner ring connecting end thickness is less than the free-ended thickness in outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502622.XA CN103542005A (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit with sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502622.XA CN103542005A (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit with sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542005A true CN103542005A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502622.XA Pending CN103542005A (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit with sealing structure |
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| Country | Link |
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| CN (1) | CN103542005A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206816A (en) * | 2018-02-28 | 2019-09-06 | 斯凯孚公司 | Bearing |
| CN111434937A (en) * | 2019-01-14 | 2020-07-21 | 斯凯孚公司 | Bearing assembly |
| CN117006156A (en) * | 2023-09-27 | 2023-11-07 | 万向钱潮股份公司 | Combined roller bearing for new energy vehicle |
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| DE102005018042A1 (en) * | 2004-04-20 | 2005-11-17 | Aktiebolaget Skf | Tapered roller bearing has plastic retaining ring with sections which fit into wedge-shaped grooves in inner half-rings and hold them in position axially, ends of ring forming shoulders which hold rollers in position during assembly |
| JP2007057014A (en) * | 2005-08-25 | 2007-03-08 | Ntn Corp | Double row tapered roll bearing for wheel |
| CN201401437Y (en) * | 2009-04-07 | 2010-02-10 | 温岭市环宇轴承有限公司 | Hub bearing with lock mouth |
| US20100232734A1 (en) * | 2007-11-09 | 2010-09-16 | Akira Torii | Sealing device for bearing assembly and wheel support bearing assembly therewith |
| CN201843900U (en) * | 2010-08-25 | 2011-05-25 | 杭州捷拓轴承有限公司 | Double-row tapered roller bearing with outer ring with containing and pressing slot |
| CN202023846U (en) * | 2011-04-20 | 2011-11-02 | 杭州沃众汽车轴承有限公司 | Hub bearing unit with long life and sealed structure |
| CN202251435U (en) * | 2011-08-17 | 2012-05-30 | 浙江大铭汽车零部件有限公司 | Dual-row conical roller bearing used for automobile wheel hub unit |
| CN102933864A (en) * | 2010-03-19 | 2013-02-13 | Ntn株式会社 | Wheel bearing device |
-
2013
- 2013-10-22 CN CN201310502622.XA patent/CN103542005A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005018042A1 (en) * | 2004-04-20 | 2005-11-17 | Aktiebolaget Skf | Tapered roller bearing has plastic retaining ring with sections which fit into wedge-shaped grooves in inner half-rings and hold them in position axially, ends of ring forming shoulders which hold rollers in position during assembly |
| JP2007057014A (en) * | 2005-08-25 | 2007-03-08 | Ntn Corp | Double row tapered roll bearing for wheel |
| US20100232734A1 (en) * | 2007-11-09 | 2010-09-16 | Akira Torii | Sealing device for bearing assembly and wheel support bearing assembly therewith |
| CN201401437Y (en) * | 2009-04-07 | 2010-02-10 | 温岭市环宇轴承有限公司 | Hub bearing with lock mouth |
| CN102933864A (en) * | 2010-03-19 | 2013-02-13 | Ntn株式会社 | Wheel bearing device |
| CN201843900U (en) * | 2010-08-25 | 2011-05-25 | 杭州捷拓轴承有限公司 | Double-row tapered roller bearing with outer ring with containing and pressing slot |
| CN202023846U (en) * | 2011-04-20 | 2011-11-02 | 杭州沃众汽车轴承有限公司 | Hub bearing unit with long life and sealed structure |
| CN202251435U (en) * | 2011-08-17 | 2012-05-30 | 浙江大铭汽车零部件有限公司 | Dual-row conical roller bearing used for automobile wheel hub unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206816A (en) * | 2018-02-28 | 2019-09-06 | 斯凯孚公司 | Bearing |
| CN110206816B (en) * | 2018-02-28 | 2022-09-06 | 斯凯孚公司 | Bearing assembly |
| CN111434937A (en) * | 2019-01-14 | 2020-07-21 | 斯凯孚公司 | Bearing assembly |
| CN111434937B (en) * | 2019-01-14 | 2024-04-05 | 斯凯孚公司 | Bearing assembly |
| CN117006156A (en) * | 2023-09-27 | 2023-11-07 | 万向钱潮股份公司 | Combined roller bearing for new energy vehicle |
| CN117006156B (en) * | 2023-09-27 | 2023-12-26 | 万向钱潮股份公司 | Combined roller bearing for new energy vehicle |
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Application publication date: 20140129 |