CN201954002U - Cassette type oil seal - Google Patents
Cassette type oil seal Download PDFInfo
- Publication number
- CN201954002U CN201954002U CN2011200802220U CN201120080222U CN201954002U CN 201954002 U CN201954002 U CN 201954002U CN 2011200802220 U CN2011200802220 U CN 2011200802220U CN 201120080222 U CN201120080222 U CN 201120080222U CN 201954002 U CN201954002 U CN 201954002U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- oil
- face
- seal lip
- lip
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 12
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides a cassette type oil seal, which comprises an inner shaft sleeve and an outer oil seal assembly. An air side face of the outer oil seal assembly is provided with a dustproof ring, the lower part of a rubber body is provided with an oil seal lip, the upper side of the rubber body on the oil seal lip is provided with a spring, an outer skeleton and the rubber body are vulcanized into a whole, the oil seal lip extends outwards and downwards to form an end face sealing lip, and the surface of the air side of the oil seal lip is provided with an oil return line; the middle section of the inner side of the outer oil seal assembly is provided with a dustproof port; and the inner shaft sleeve adopts an L-shaped structure, and the outer end face of the L-shaped inner shaft sleeve and the outer oil seal lip are contacted to form an end face seal. When the oil seal is combined, the rubber seal lip cannot be directly contacted with a rotating shaft, but can be directly matched with the inner side of the outer end face of the inner sleeve to form a rotating end face seal, a liquid medium to flow out can return to the oil storage end under pressure, the self-tightening force of the oil seal can be compensated by the spring at any time, and external dust, impurities and the like can be prevented from entering the sealing surface due to the dustproof port and the dustproof ring, so that the sealing surface can be cleaner, and the service life of the oil seal can be prolonged.
Description
Technical field
The utility model relates to the seal arrangement at auto lubrication position, specifically is a kind of boxlike oil sealing.
Background technique
At present, in automobile industry, rubber seal is most widely used.Fluid dynamic type rubber lip ring structure is generally adopted in the sealing that is used for running shaft, its sealing mechanism is to form wire contact zones between oil sealing rubber lip and the running shaft, form an extremely thin even oil film between the axle at this band place and the rubber, thickness is approximately 2.5 μ m. oil films and can will takes away because of the frictional heat of caused by relative motion between lip and the axle, makes it lubricated; Can produce certain force of strain on the surface of oil film again, stop the outflow of lubricant oil, form sealing.
Can guarantee this thickness of oil film, the sealing of oil sealing is just good. but always there is friction in rubber lip with axle, the sharp-pointed lip of oil sealing will wear and tear gradually and form band shape, and some factory is added the restriction of technology especially, the rough surface of axle does not reach sealing desired proper surface roughness scope Ra0.32～Ra0.8 μ m, aggravated the quick wearing and tearing of rubber lip, at this moment, oil sealing increases with the contact width of axle, the oil film thickening, oil film tension force diminishes and leaks.
In addition because machining and assembly error, cause in the mistake in axle and hole off-centre; In the bending of running shaft, the mistake or the circular runout that causes when uneven, the degree of eccentricity of excessive axle and seat can be by increase ashamedly because wearing and tearing and elastomericly increase progressively the caused fatigue ruption of hardening, influence sealability, the off-centre of excessive axle will cause that oil seal lip beats, inordinate wear takes place, and destroys the sealing of oil sealing.
That is to say that when the rough surface of axle does not reach the desired proper surface roughness of sealing and requires, when the eccentric of axle and beat when excessive, such as always beating greater than 0.7mm, the General Purpose Rubber seal ring can't satisfy usage requirement.
Summary of the invention
The utility model proposes a kind of boxlike oil sealing; Purpose is in order to solve because an axle surface roughness does not reach requirement and eccentric shaft and beats when excessive, the too fast and inordinate wear of oil seal lip, and oil film breakdown and cause sealing the problem of failure improves the new type sealing element of the sealing of oil sealing.
The technical solution of the utility model is for this reason, a kind of boxlike oil sealing, comprise internal axle sleeve, outer oil seal assembly, the outer oil seal assembly comprises dust ring, outer skeleton, rubber body, the air side of outer oil seal assembly is provided with dust ring, and rubber body has oil seal lip, it is characterized in that: outer skeleton and rubber body sulfuration are one, oil seal lip outwards extends to form the end face seal lip downwards, is provided with oil drive back thread at the oil seal lip air side surface; The inboard stage casing of oil seal assembly is provided with dustproof mouthful outside; Internal axle sleeve is designed to L shaped structure, and L shaped internal axle sleeve exterior edge face contacts with oil seal lip and forms end face seal.
Improvement to such scheme is: the rubber body upside of oil seal lip is equipped with oil seal spring.
Beneficial effect:
After the combination of the utility model oil sealing, the rubber seal lip does not directly contact with running shaft, it directly forms end face rotary seal with inboard cooperation of inner sleeve exterior edge face, there are not wearing and tearing with axle, to the eccentric of axle and beat insensitive, the oil drive back thread of lip air side surface can produce pump-absorb action, the liquid medium of desire outflow can be pushed back the oil storage end, the adding of spring, at any time Compensation oil seal self-tightening power, the adding of dustproof mouthful and dust ring can prevent external dust. impurity etc. enter sealing surface, sealing surface is more cleaned, thereby effectively raise the working life of oil sealing.
The axial external diameter of L shaped internal axle sleeve contacts with dust ring with the dustproof mouth of outer oil seal assembly and prevents that external agency from entering sealing surface.L shaped internal axle sleeve internal diameter is coated with sealer and guarantees and the cooperating and sealing of running shaft.
The rubber body upside of the oil seal lip of end face seal is equipped with oil seal spring, and lasting radial force is provided, and seals more reliable.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
Fig. 2 installs cross-sectional view in position of the present utility model.
Fig. 3 is that rubber body, outer skeleton two partly become an integral body, the cross-sectional view of post vulcanization then with the mould molded vulcanization.
Fig. 4 is an outer oil seal assembly schematic representation.
1 is internal axle sleeve, the 2nd among the figure, outer oil seal assembly, the 3rd, dust ring, the 4th, outer skeleton, the 5th, rubber body, the 6th, oil seal spring, the 7th, oil seal lip, the 8th, oil drive back thread, 9 dustproof mouths.
Embodiment
The utility model is shown in Fig. 1,2,3,4.
A kind of boxlike oil sealing of the utility model, comprise internal axle sleeve 1, outer oil seal assembly 2, outer oil seal assembly 2 comprises dust ring 3, outer skeleton 4, rubber body 5 and oil seal spring 6, the air side of outer oil seal assembly 2 is provided with dust ring 3, rubber body 5 has oil seal lip 7, the rubber body upside of oil seal lip 7 is provided with spring groove and oil seal spring 6 is installed, be that outer skeleton 4 is one with rubber body 5 sulfurations, oil seal lip 7 outwards extends to form the end face seal lip downwards, is provided with oil drive back thread 8 at the oil seal lip air side surface; The inboard stage casing of oil seal assembly 2 is provided with dustproof mouthful 9 outside; Internal axle sleeve 1 is designed to L shaped structure, and L shaped internal axle sleeve 1 exterior edge face contacts with oil seal lip 7 and forms end face seal.
L shaped internal axle sleeve axle 1 contacts with dust ring 3 to external diameter and outer oil seal assembly dustproof mouthful 9.
L shaped internal axle sleeve 1 internal diameter is coated with sealer.
Production stage of the present utility model is:
One partly becomes integral body, a post vulcanization then with the mould molded vulcanization for 4 liang with rubber body 5, outer skeleton earlier.
2 glue, bonding nonwovens and cover oil seal springs 6.
1 impact briquetting of three internal axle sleeves, differential hardening is handled, upper-end surface external diameter oral area car thin (assembly deflections is used).
Four assemble internal axle sleeve with the outer oil seal assembly.
Five internal axle sleeve internal diameters spraying sealer.
Claims (2)
1. boxlike oil sealing, comprise internal axle sleeve, outer oil seal assembly, the outer oil seal assembly comprises dust ring, outer skeleton, rubber body, the air side of outer oil seal assembly is provided with dust ring, rubber body has oil seal lip, it is characterized in that: outer skeleton and rubber body sulfuration are one, and oil seal lip outwards extends to form the end face seal lip downwards, is provided with oil drive back thread at the oil seal lip air side surface; The inboard stage casing of oil seal assembly is provided with dustproof mouthful outside; Internal axle sleeve is designed to L shaped structure, and L shaped internal axle sleeve exterior edge face contacts with oil seal lip and forms end face seal.
2. a kind of boxlike oil sealing according to claim 1: the rubber body upside of oil seal lip is equipped with oil seal spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200802220U CN201954002U (en) | 2011-03-24 | 2011-03-24 | Cassette type oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200802220U CN201954002U (en) | 2011-03-24 | 2011-03-24 | Cassette type oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201954002U true CN201954002U (en) | 2011-08-31 |
Family
ID=44498112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200802220U Expired - Lifetime CN201954002U (en) | 2011-03-24 | 2011-03-24 | Cassette type oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201954002U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769338A (en) * | 2012-10-23 | 2015-07-08 | Nok株式会社 | Oil seal |
| CN106763787A (en) * | 2017-01-23 | 2017-05-31 | 广西玉柴机器股份有限公司 | Improve the lateral oil seal of sealing reliability |
| US20180038485A1 (en) * | 2014-06-10 | 2018-02-08 | Nok Corporation | Sealing device |
| CN112096872A (en) * | 2020-09-08 | 2020-12-18 | 江门市鑫辉密封科技有限公司 | Agricultural machinery sealing ring |
| CN114877073A (en) * | 2022-03-28 | 2022-08-09 | 蔚来汽车科技(安徽)有限公司 | Seal structure, shock absorber and vehicle |
-
2011
- 2011-03-24 CN CN2011200802220U patent/CN201954002U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769338A (en) * | 2012-10-23 | 2015-07-08 | Nok株式会社 | Oil seal |
| US10371260B2 (en) | 2012-10-23 | 2019-08-06 | Nok Corporation | Oil seal |
| US20180038485A1 (en) * | 2014-06-10 | 2018-02-08 | Nok Corporation | Sealing device |
| EP3301333A1 (en) * | 2014-06-10 | 2018-04-04 | NOK Corporation | Sealing device |
| US10352450B2 (en) | 2014-06-10 | 2019-07-16 | Nok Corporation | Sealing device |
| US10683935B2 (en) | 2014-06-10 | 2020-06-16 | Nok Corporation | Sealing device |
| CN106763787A (en) * | 2017-01-23 | 2017-05-31 | 广西玉柴机器股份有限公司 | Improve the lateral oil seal of sealing reliability |
| CN112096872A (en) * | 2020-09-08 | 2020-12-18 | 江门市鑫辉密封科技有限公司 | Agricultural machinery sealing ring |
| CN114877073A (en) * | 2022-03-28 | 2022-08-09 | 蔚来汽车科技(安徽)有限公司 | Seal structure, shock absorber and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |