CN201539564U - Combined heavy truck hub oil seal - Google Patents
Combined heavy truck hub oil seal Download PDFInfo
- Publication number
- CN201539564U CN201539564U CN2009200291340U CN200920029134U CN201539564U CN 201539564 U CN201539564 U CN 201539564U CN 2009200291340 U CN2009200291340 U CN 2009200291340U CN 200920029134 U CN200920029134 U CN 200920029134U CN 201539564 U CN201539564 U CN 201539564U
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- oil seal
- sealing
- lip
- seal
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Abstract
The utility model belongs to a sealing device, in particular to a combined oil seal. A combined heavy truck hub oil seal is provided for overcoming the disadvantages of a rotary shaft oil seal in the existing vehicle hub of high failure rate and poor sealing effect. The combined heavy truck hub oil seal comprises an external oil seal, an internal oil seal and a check ring, wherein the internal oil seal is arranged in the external oil seal; the check ring is arranged in the end surface of the external oil ring; the external oil seal comprises an external oil seal skeleton and a second sealing lip; the internal oil seal comprises an internal oil seal skeleton and a main sealing lip; protective sleeves are arranged in the oil seals; the sections of the protective sleeves are in a T shape; one end of the each protective sleeve with large diameter is arranged outside the sealing end surface of the external oil seal, and a part with small diameter is in a cylinder shape; the protective sleeves extend into internal holes of the external oil seal and the internal oil seal, and are in interference fit with the main sealing lip and the second sealing lip ; and the waist part of the main sealing lip of the internal oil seal is in a wave shape. The utility model has the advantages of simple assembly, convenient location, good sealing effect and good eccentric ability resistance; and the use life of the combined oil seal is prolonged.
Description
Technical field
The utility model belongs to seal arrangement, especially a kind of combined type oil sealing.
Background technique
Along with the continuous development of automotive industry, more and more higher to the requirement of oil sealing.The oil sealing at automotive hub place is a rotary shaft oil seal, seals after a plurality of monomer seal combination of general at present employing, and as shown in Figure 1, single Sealing comprises external sealed body 1, skeleton 2, spring 3, sealing lip 4 etc.As everyone knows, automotive hub often is in overload condition, the wearing and tearing of bearing and gear are comparatively serious, the iron filings that the wearing and tearing back produces can cause oil seal failure, frock breakage in addition, the not high reason of medium luboil cleanness also can reduce the sealability of oil sealing, therefore the failure rate of rotary shaft oil seal is very high in the automotive hub, and working life is short, and sealing effect is poor; Secondly, oil sealing is in transportation and assembly process, and the inevitable sealing lip lip to oil sealing such as be affectedly bashful of external environment such as frock or people's both hands pollutes, and has reduced sealing effect; When assembling in addition, each monomer oil sealing must be installed respectively, is easy to cause the oil sealing location inaccurate like this, thereby reduces sealing effect.
Summary of the invention
The purpose of this utility model is to overcome the rotary shaft oil seal failure rate height in the existing automotive hub and the defective of sealing effect difference, propose a kind of combined type and heavily blocked hub oil seal, its assembling is simple, be convenient to the location, and accurate positioning, sealing effect is better, and anti-eccentric ability is good, has prolonged the working life of oil sealing.
The utility model is to adopt following technological scheme to realize: a kind of combined type heavily blocks hub oil seal; comprise outer oil seal; inner oil seal and back-up ring; inner oil seal is arranged on the inside of outer oil seal; back-up ring is arranged on the inboard of outer oil seal end face and the outside of inner oil seal; outer oil seal comprises outer oil seal skeleton and secondary sealing lip; inner oil seal comprises inner oil seal skeleton and primary seal lip; wherein; be provided with protecting jacket in the described oil sealing; the protecting jacket cross section is "T"-shaped; the end that its diameter is big is arranged on the outside of outer oil seal seal face; the part that diameter is little is cylindric; stretch in the endoporus of outer oil seal and inner oil seal, and be interference fit with primary seal lip and secondary sealing lip, it is in wave shape that described inner oil seal seals the waist of main lip.Prevented oil sealing effectively in transportation and assembly process by protecting jacket, external environment has guaranteed the turbidity test of lip to the pollution of sealing lip lip, has improved the sealing effect of oil sealing.Waist in wave shape has then improved the follow-up capability of sealing lip with axle in the primary seal lip, has also improved the sealing effect of oil sealing.
In the utility model, described back-up ring one end contacts with the outer oil seal internal surface, and the corresponding the other end is provided with little secondary sealing lip.Oil sealing is in assembly process, and back-up ring has played supporting effect, has prevented the extrusion-deformation of oil sealing outer ring, has also reduced the impact of medium oil to primary seal lip simultaneously; Little secondary sealing lip on the back-up ring can stop iron filings or impurity in the medium oil to contact with primary seal lip in addition, has guaranteed the sealing effect of primary seal lip.
Described outer oil seal adopts half encapsulate, half skeletal structure.This structure has been saved sizing material, has improved the coaxality of oil sealing when assembling, also helps the heat radiation of oil sealing on the other hand.
This oil sealing is at first installed each parts before using, and utilizes frock that it is assembled on the running shaft after oil sealing is mounted to one, so its location is simple and accurately.
The beneficial effects of the utility model are: by increase protecting jacket in oil sealing; prevented pollution to the sealing lip lip; be designed to waveform by waist with primary seal lip; improved the anti-eccentric ability of oil sealing, in addition in outer oil seal combination and the structural type that increases back-up ring, all improved of the pollution of impurity such as iron filings in the medium oil effectively to the sealing lip lip; and prolonged working life of oil sealing; easy to assembly, and accurate positioning, improved the sealing effect of oil sealing greatly.
Description of drawings
Fig. 1 partly cuts open structural representation for existing monomer Sealing;
Fig. 2 is the structural representation that partly cuts open of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 2, this oil sealing adopts inside and outside fabricated structure, and it comprises outer oil seal 3 and inner oil seal 2, and outer oil seal 3 comprises skeleton and secondary sealing lip 7, and inner oil seal 2 comprises skeleton and primary seal lip 6.Half rubber-wrapping structure is adopted in the outside of outer oil seal 3, and more existing full encapsulate formula structure is compared, and the coaxality during its assembling is good, has saved sizing material.And improved the radiating effect of oil sealing.Inner oil seal 2 is positioned at the inside of outer oil seal 3, wherein the outside of the inboard of outer oil seal 3 end faces and inner oil seal 2 is provided with back-up ring 4, one end of back-up ring 4 contacts with the internal surface of outer oil seal skeleton, the other end is provided with little secondary sealing lip 5, back-up ring 4 and little secondary sealing lip 5 thereof can reduce the impact of medium oil to primary seal lip 6, and prevent that impurity such as iron filings in the medium oil to the destruction of lip, having guaranteed the sealing effect of primary seal lip, and having improved its working life.Oil sealing is when assembling simultaneously, and back-up ring 4 has played the effect of supporting, and prevents the extrusion-deformation of oil sealing outer ring when assembling.The waist of primary seal lip 6 is in wave shape, and it has improved the followability of primary seal lip lip with axle, makes oil sealing can bear the distortion and the overload of vehicle bridge, has improved sealing effect.In addition, be provided with protecting jacket 1 in this oil sealing, its sectional shape is " T ", and the end that its diameter is bigger is arranged on the end end face outside that outer oil seal 3 is closed shape, and the less end of diameter is cylindric, and it stretches in the endoporus of oil sealing, and is interference fit with sealing lip.Can prevent oil sealing in transportation and assembly process by protecting jacket, the frock during being affectedly bashful or assembling of staff has guaranteed the sealing effect of oil sealing to the pollution of sealing lip lip.Secondary sealing lip 7 can prevent that outside dust, earth etc. from entering medium oil, played the effect of auxiliary seal.
This oil sealing at first is mounted to one with each several part before assembling.Compare with existing monomer seal configuration, only need one-time positioning during assembling, so good positioning effect, and can bear the distortion and the overload of vehicle bridge.The utility model is mainly used in the rotation axis seal in the hub reduction vehicle bridge.
Claims (3)
1. a combined type heavily blocks hub oil seal; comprise outer oil seal; inner oil seal and back-up ring; inner oil seal is arranged on the inside of outer oil seal; back-up ring is arranged on the inboard of outer oil seal end face and the outside of inner oil seal; outer oil seal comprises outer oil seal skeleton and sealing pair lip; inner oil seal comprises inner oil seal skeleton and the main lip of sealing; it is characterized in that: be provided with protecting jacket in the described oil sealing; the protecting jacket cross section is "T"-shaped; the end that its diameter is big is arranged on the outside of outer oil seal seal face, and the part that diameter is little is cylindric, stretches in the endoporus of outer oil seal and inner oil seal; and be interference fit with sealing main lip and sealing pair lip, it is in wave shape that described inner oil seal seals the waist of main lip.
2. combined type according to claim 1 heavily blocks hub oil seal, it is characterized in that: described back-up ring one end contacts with the outer oil seal internal surface, and the corresponding the other end is provided with little sealing pair lip.
3. combined type according to claim 1 heavily blocks hub oil seal, it is characterized in that: described outer oil seal adopts half encapsulate, half skeletal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200291340U CN201539564U (en) | 2009-06-30 | 2009-06-30 | Combined heavy truck hub oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200291340U CN201539564U (en) | 2009-06-30 | 2009-06-30 | Combined heavy truck hub oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539564U true CN201539564U (en) | 2010-08-04 |
Family
ID=42591016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200291340U Expired - Fee Related CN201539564U (en) | 2009-06-30 | 2009-06-30 | Combined heavy truck hub oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539564U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726983A (en) * | 2014-01-09 | 2014-04-16 | 镇江大力液压马达股份有限公司 | High-speed flow distribution cycloid hydraulic motor |
| CN105156685A (en) * | 2015-07-23 | 2015-12-16 | 海盐欧亚特汽配有限公司 | Combination oil seal of automobile hub |
| CN105840831A (en) * | 2016-05-20 | 2016-08-10 | 西安法士特汽车传动有限公司 | Integrated combination oil seal |
| CN107806516A (en) * | 2016-09-08 | 2018-03-16 | 纳博特斯克有限公司 | Seal, sealing adaptor device and containment member |
-
2009
- 2009-06-30 CN CN2009200291340U patent/CN201539564U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726983A (en) * | 2014-01-09 | 2014-04-16 | 镇江大力液压马达股份有限公司 | High-speed flow distribution cycloid hydraulic motor |
| CN105156685A (en) * | 2015-07-23 | 2015-12-16 | 海盐欧亚特汽配有限公司 | Combination oil seal of automobile hub |
| CN105840831A (en) * | 2016-05-20 | 2016-08-10 | 西安法士特汽车传动有限公司 | Integrated combination oil seal |
| CN107806516A (en) * | 2016-09-08 | 2018-03-16 | 纳博特斯克有限公司 | Seal, sealing adaptor device and containment member |
| CN107806516B (en) * | 2016-09-08 | 2021-06-29 | 纳博特斯克有限公司 | Device comprising a sealing member |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20170630 |