CN204852029U - Shield formula bearing sealing device - Google Patents
Shield formula bearing sealing device Download PDFInfo
- Publication number
- CN204852029U CN204852029U CN201520592809.8U CN201520592809U CN204852029U CN 204852029 U CN204852029 U CN 204852029U CN 201520592809 U CN201520592809 U CN 201520592809U CN 204852029 U CN204852029 U CN 204852029U
- Authority
- CN
- China
- Prior art keywords
- dust cover
- flexible sealing
- sealing lip
- groove
- rigidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 82
- 239000000428 dust Substances 0.000 claims abstract description 102
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 238000002788 crimping Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005987 sulfurization reaction Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Landscapes
- Sealing Of Bearings (AREA)
Abstract
The utility model relates to a shield formula bearing sealing device, in the bearing, outer lane and sealing washer, the sealing washer includes the shield and the rubber seal on roll coil of strip limit, the turn -up pressure equipment of shield is at bearing inner race's dustproof inslot, the rubber seal includes rubber matrix and flexible sealing lip, the flexible sealing lip is located the shield inboard, the internal diameter end of shield extends has the rigidity dust lip who keeps off in the flexible sealing lip outside, rigidity dust lip and flexible sealing lip all with the sealed cooperation in bearing inner race upper seal groove, the seal groove is outer low, interior high two -stage step groove, the flexible sealing lip extends along internal diameter end and the slope of slant rigidity dust lip, the flexible sealing lip is contradicted sealed the cooperation to the terminal surface with the inboard step fluted shaft in two -stage step groove, and the inboard step fluted shaft in two -stage step groove is the slope to the terminal surface, the outside step groove top clearance fit in rigidity dust lip and two -stage step groove. The utility model has the advantages of structural design is reasonable, and is sealed effectual.
Description
Technical field
The utility model relates to mechanical seal structure, is specifically dust cover formula associated sealing arrangement for bearings.
Background technique
At present, associated sealing arrangement for bearings main structure with dust cover is: comprise bearing outer ring, bearing inner race, and the dust cover between bearing outer ring and bearing inner race, the external diameter end of dust cover has crimping or rubber dust-proof lip, the inner peripheral surface of bearing outer ring is provided with dustproof groove, crimping or rubber dust-proof lip are interference fitted in dustproof groove, dust cover is attached with rubber seal, rubber seal is formed with flexible sealing lip, the corresponding inner-diameter end at dust cover of flexible sealing lip, usual rubber seal lip is positioned at the inner side of dust cover, the inner-diameter end of dust cover is extended with the rigidity dust excluder lips of gear outside rubber seal lip, flexible sealing lip contacts with the outer peripheral surface of bearing inner race and is sealed and matched, the outer peripheral surface Spielpassung of rigidity dust excluder lips and bearing inner race, for improving sealability, having and digging step-like seal groove on the outer peripheral surface of bearing inner race, but its to there is structural design unreasonable, the defect of poor sealing performance.And the direct sulfuration of existing rubber seal is attached on dust cover sidewall, the sidewall of dust cover is burnishing surface, and rubber seal easily comes off after a long time use.
Summary of the invention
The present utility model object is: the deficiency existed for prior art, the utility model provides a kind of reasonable in design, the dust cover formula associated sealing arrangement for bearings of good sealing effect.
For achieving the above object, the utility model provides following technological scheme: a kind of dust cover formula associated sealing arrangement for bearings, comprise bearing inner race, bearing outer ring and the seal ring be located between bearing inner race and bearing outer ring, the inner peripheral surface of bearing outer ring is provided with dustproof groove, the outer peripheral surface of bearing inner race is provided with seal groove, seal ring comprises dust cover and rubber seal, the external diameter end of described dust cover is provided with the crimping of outside turnup, the crimping of dust cover is fitted in dustproof groove, rubber seal comprises the rubber matrix be attached on dust cover, rubber matrix is provided with flexible sealing lip, flexible sealing lip is positioned at inside described dust cover, the inner-diameter end of dust cover is extended with the rigidity dust excluder lips be blocked in outside flexible sealing lip, rigidity dust excluder lips and flexible sealing lip are all sealed and matched with described seal groove, gap-forming Seal cage between rigidity dust excluder lips and flexible sealing lip, it is characterized in that: described seal groove is outer low, interior high two-stage stepped slot, described flexible sealing lip is the extension and oblique rigidity dust excluder lips tilts along inner-diameter end, the inner side step groove axial end of described flexible sealing lip and two-stage stepped slot is conflicted and is sealed and matched, and the inner side step groove axial end of described two-stage stepped slot is slope, rigidity dust excluder lips coordinates with the stepped slot top clearance, outside of two-stage stepped slot.
By adopting technique scheme, flexible sealing lip coordinates with the axial end of stepped slot, for axially contacting cooperation, more traditional radial interference fit is compared, and assembles more easy and convenient, and flexible sealing lip is along inner-diameter end and oblique rigidity dust excluder lips inclination extension, and coordinate the axial end of stepped slot to design for slope, the elastic deformability of flexible sealing lip is good, and flexible sealing lip contacts reliably with the axial end of stepped slot, realizes good contact sealing; Seal groove adopts two-stage stepped slot, and impurity, when entering Bearing inner, has larger climb altitude, and coordinates rigidity dust excluder lips at the stepped slot top, outside of two-stage stepped slot, becomes dual dust-proof barrier, thus reach good sealing with flexible sealing lip; Rigidity dust excluder lips plays protective action to flexible sealing lip, improves flexible sealing lip working life and performance; Seal ring coordinates with bearing outer ring, adopts the crimping that dust cover is formed to be fitted in the dustproof groove of bearing outer ring, and good sealing effect and assembling are easily.
The utility model is set to further: the sidewall of described flexible sealing lip root and rubber matrix joint is provided with annular groove.Under this structural design, when assembling, after flexible sealing lip contacts with slope, being convenient to flexible sealing lip root and bending, improve sealed elastic, improve sealability.
The utility model is set to further: described annular groove is circular arc.Under this structure, tear when circular arc avoids flexible sealing lip to bend, improve reliability.
The utility model is set to further: the outside stepped slot axial end of described seal groove is also slope, described rigidity dust excluder lips tip inside offers annular gap slot, projection is formed accordingly in rigidity dust excluder lips end, the corresponding outside stepped slot at seal groove of gap slot of described rigidity dust excluder lips and inner side step groove joint, the outside stepped slot axial end corresponding matching of protruding and described seal groove.Under said structure, the impurity being convenient to enter Seal cage between rigidity dust excluder lips and flexible sealing lip flows out, and the annular gap slot design of rigidity dust excluder lips end, and is buckled in outside stepped slot and the inner side step groove joint of seal groove, coordinate more reliable, sealing is better.
The utility model is set to further: in the middle part of described dust cover, evagination is arranged, in the middle part of dust cover by straight plate be connected swash plate and connect and compose, and through straight plate be connected swash plate and surround the chamber of stepping down be positioned at inside dust cover, connect swash plate and connect straight plate and crimping, described rubber matrix is embedded in steps down in chamber, and rubber matrix is attached on the inwall of connection swash plate and straight plate.Under said structure design, dust cover evagination designs, and realizes stepping down, and improves bearing interior space, and cavity of stepping down embeds for rubber seal, compact structure, and rubber matrix is attached to the inwall connecting swash plate and straight plate, and connection area is large, firm and reliable connection.
The utility model is set to further: the straight plate upper punch swaging of described dust cover becomes the annular convex rib towards outer lug, and the corresponding cavity that formation is corresponding with annular convex rib inside the straight plate of dust cover, described rubber matrix embeds in cavity.Under said structure, when sulfuration, rubber matrix enters in cavity, rubber seal is combined more solid and reliable with dust cover, and annular convex rib plays reinforing function, improves the intensity of dust cover.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the utility model specific embodiment structural representation;
Fig. 2 is the part A partial enlarged view of Fig. 1.
Embodiment
See accompanying drawing 1 and accompanying drawing 2, a kind of dust cover formula associated sealing arrangement for bearings disclosed in the utility model, comprise bearing inner race 2, bearing outer ring 1 and the seal ring 3 be located between bearing inner race 2 and bearing outer ring 1, the inner peripheral surface of bearing outer ring 1 is provided with dustproof groove 11, the outer peripheral surface of bearing inner race 2 is provided with seal groove 21, seal ring 3 comprises dust cover 31 and rubber seal 32, the external diameter end of described dust cover 31 is provided with the crimping 311 of outside turnup, the crimping 311 of dust cover 31 is fitted in dustproof groove 11, rubber seal 32 comprises the rubber matrix 321 be attached on dust cover 31, rubber matrix 321 is provided with flexible sealing lip 322, flexible sealing lip 322 is positioned at inside described dust cover 31, the inner-diameter end of dust cover 31 is extended with the rigidity dust excluder lips 312 be blocked in outside flexible sealing lip 322, rigidity dust excluder lips 312 and flexible sealing lip 322 are all sealed and matched with described seal groove 21, gap-forming Seal cage 33 between rigidity dust excluder lips 312 and flexible sealing lip 322, described seal groove 21 is outer low, interior high two-stage stepped slot 21, described flexible sealing lip 322 is the extension and oblique rigidity dust excluder lips 312 tilts along inner-diameter end, described flexible sealing lip 322 is conflicted with inner side step groove 211 axial end 2111 of two-stage stepped slot 21 and is sealed and matched, and inner side step groove 211 axial end 2111 of described two-stage stepped slot 21 is slope, rigidity dust excluder lips 312 coordinates with outside stepped slot 212 top clearance of two-stage stepped slot 21.Flexible sealing lip coordinates with the axial end of stepped slot, for axially contacting cooperation, more traditional radial interference fit is compared, assemble more easy and convenient, and flexible sealing lip is along inner-diameter end and oblique rigidity dust excluder lips tilts to extend, and coordinate the axial end of stepped slot to design for slope, the elastic deformability of flexible sealing lip is good, flexible sealing lip contacts reliably with the axial end of stepped slot, realizes good contact sealing; Seal groove adopts two-stage stepped slot, and impurity, when entering Bearing inner, has larger climb altitude, and coordinates rigidity dust excluder lips at the stepped slot top, outside of two-stage stepped slot, becomes dual dust-proof barrier, thus reach good sealing with flexible sealing lip; Rigidity dust excluder lips plays protective action to flexible sealing lip, improves flexible sealing lip working life and performance; Seal ring coordinates with bearing outer ring, adopts the crimping that dust cover is formed to be fitted in the dustproof groove of bearing outer ring, and good sealing effect and assembling are easily.
For improving sealability further, outside stepped slot 212 axial end 2121 of described seal groove 21 is also slope, described rigidity dust excluder lips 312 tip inside offers annular gap slot 3121, protruding 3122 are formed accordingly in rigidity dust excluder lips 312 end, gap slot 3121 correspondence of described rigidity dust excluder lips 312 in the outside stepped slot 212 of seal groove 21 and inner side step groove 211 joint, protruding 3122 with outside stepped slot 212 axial end 2121 corresponding matching of described seal groove 21.Under said structure, the impurity being convenient to enter Seal cage between rigidity dust excluder lips and flexible sealing lip flows out, and the annular gap slot design of rigidity dust excluder lips end, and is buckled in outside stepped slot and the inner side step groove joint of seal groove, coordinate more reliable, sealing is better.And the gradient of outside stepped slot 212 axial end 2121 of seal groove 21 is less than the gradient of inner side step groove 211 axial end 2111 of seal groove 21, convenient processing, and ensure the intensity of bearing inner race.
For improving the sealability of flexible sealing lip, the sidewall of described flexible sealing lip 322 root and rubber matrix 321 joint is provided with annular groove 323.Under this structural design, when assembling, after flexible sealing lip contacts with slope, being convenient to flexible sealing lip root and bending, improve sealed elastic, improve sealability.And described annular groove 323 is circular arc.Tear when circular arc avoids flexible sealing lip to bend, improve reliability.
For improving the adhesive strength of rubber seal and dust cover, in the middle part of described dust cover 31, evagination is arranged, in the middle part of dust cover 31 by straight plate 313 be connected swash plate 314 and connect and compose, and through straight plate 313 be connected swash plate 314 and surround the chamber of stepping down be positioned at inside dust cover 31, connect swash plate 314 and connect straight plate 313 and crimping 311, described rubber matrix 321 is embedded in steps down in chamber, and rubber matrix 321 is attached on the inwall of connection swash plate 314 and straight plate 313.Dust cover evagination designs, and realizes stepping down, and improves bearing interior space, and cavity of stepping down embeds for rubber seal, compact structure; Rubber matrix is attached to the inwall connecting swash plate and straight plate, and connection area is large, firm and reliable connection.Wherein, the straight plate 313 upper punch swaging of described dust cover 31 becomes the annular convex rib 315 towards outer lug, and the corresponding cavity 316 that formation is corresponding with annular convex rib 315 inside the straight plate 313 of dust cover 31, described rubber matrix 321 embeds in cavity 316.Rubber seal is when sulfuration, and rubber matrix enters in cavity, rubber seal is combined more solid and reliable with dust cover, and annular convex rib plays reinforing function, improves the intensity of dust cover.Preferred annular convex rib 315 sectional shape is circular arc, and intensity is better.
Claims (6)
1. a dust cover formula associated sealing arrangement for bearings, comprise bearing inner race, bearing outer ring and the seal ring be located between bearing inner race and bearing outer ring, the inner peripheral surface of bearing outer ring is provided with dustproof groove, the outer peripheral surface of bearing inner race is provided with seal groove, seal ring comprises dust cover and rubber seal, the external diameter end of described dust cover is provided with the crimping of outside turnup, the crimping of dust cover is fitted in dustproof groove, rubber seal comprises the rubber matrix be attached on dust cover, rubber matrix is provided with flexible sealing lip, flexible sealing lip is positioned at inside described dust cover, the inner-diameter end of dust cover is extended with the rigidity dust excluder lips be blocked in outside flexible sealing lip, rigidity dust excluder lips and flexible sealing lip are all sealed and matched with described seal groove, gap-forming Seal cage between rigidity dust excluder lips and flexible sealing lip, it is characterized in that: described seal groove is outer low, interior high two-stage stepped slot, described flexible sealing lip is the extension and oblique rigidity dust excluder lips tilts along inner-diameter end, the inner side step groove axial end of described flexible sealing lip and two-stage stepped slot is conflicted and is sealed and matched, and the inner side step groove axial end of described two-stage stepped slot is slope, rigidity dust excluder lips coordinates with the stepped slot top clearance, outside of two-stage stepped slot.
2. dust cover formula associated sealing arrangement for bearings according to claim 1, is characterized in that: the sidewall of described flexible sealing lip root and rubber matrix joint is provided with annular groove.
3. dust cover formula associated sealing arrangement for bearings according to claim 2, is characterized in that: described annular groove is circular arc.
4. dust cover formula associated sealing arrangement for bearings according to claim 1 or 2 or 3, it is characterized in that: the outside stepped slot axial end of described seal groove is also slope, described rigidity dust excluder lips tip inside offers annular gap slot, projection is formed accordingly in rigidity dust excluder lips end, the corresponding outside stepped slot at seal groove of gap slot of described rigidity dust excluder lips and inner side step groove joint, the outside stepped slot axial end corresponding matching of protruding and described seal groove.
5. dust cover formula associated sealing arrangement for bearings according to claim 1 or 2 or 3, it is characterized in that: in the middle part of described dust cover, evagination is arranged, in the middle part of dust cover by straight plate be connected swash plate and connect and compose, and through straight plate be connected swash plate and surround the chamber of stepping down be positioned at inside dust cover, connect swash plate and connect straight plate and crimping, described rubber matrix is embedded in steps down in chamber, and rubber matrix is attached on the inwall of connection swash plate and straight plate.
6. dust cover formula associated sealing arrangement for bearings according to claim 5, it is characterized in that: the straight plate upper punch swaging of described dust cover becomes the annular convex rib towards outer lug, the corresponding cavity that formation is corresponding with annular convex rib inside the straight plate of dust cover, described rubber matrix embeds in cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592809.8U CN204852029U (en) | 2015-08-07 | 2015-08-07 | Shield formula bearing sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592809.8U CN204852029U (en) | 2015-08-07 | 2015-08-07 | Shield formula bearing sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204852029U true CN204852029U (en) | 2015-12-09 |
Family
ID=54742580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520592809.8U Expired - Fee Related CN204852029U (en) | 2015-08-07 | 2015-08-07 | Shield formula bearing sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204852029U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486177A (en) * | 2019-01-28 | 2020-08-04 | 舍弗勒技术股份两合公司 | Dust cap and bearing |
| CN112460150A (en) * | 2020-11-24 | 2021-03-09 | 杭州人本电机轴承有限公司 | High-sealing low-friction one-way bearing |
-
2015
- 2015-08-07 CN CN201520592809.8U patent/CN204852029U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486177A (en) * | 2019-01-28 | 2020-08-04 | 舍弗勒技术股份两合公司 | Dust cap and bearing |
| CN112460150A (en) * | 2020-11-24 | 2021-03-09 | 杭州人本电机轴承有限公司 | High-sealing low-friction one-way bearing |
| CN112460150B (en) * | 2020-11-24 | 2022-04-08 | 杭州人本电机轴承有限公司 | High-sealing low-friction one-way bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Shield formula bearing sealing device Effective date of registration: 20171221 Granted publication date: 20151209 Pledgee: Agricultural Bank of China branch of Wenzhou economic and Technological Development Zone, Limited by Share Ltd. Pledgor: WENZHOU C&U AUTO BEARING CO.,LTD. Registration number: 2017330000316 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201221 Granted publication date: 20151209 Pledgee: Agricultural Bank of China branch of Wenzhou economic and Technological Development Zone, Limited by Share Ltd. Pledgor: WENZHOU C&U AUTO BEARING Co.,Ltd. Registration number: 2017330000316 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |