CN207935439U - A kind of car rear axle semi-axis sealing structure - Google Patents
A kind of car rear axle semi-axis sealing structure Download PDFInfo
- Publication number
- CN207935439U CN207935439U CN201820325689.9U CN201820325689U CN207935439U CN 207935439 U CN207935439 U CN 207935439U CN 201820325689 U CN201820325689 U CN 201820325689U CN 207935439 U CN207935439 U CN 207935439U
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- China
- Prior art keywords
- rear axle
- lip
- semiaxis
- sealing
- cylindrical portion
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Abstract
The utility model discloses a kind of car rear axle semi-axis sealing structures, including rear axle, the semiaxis being connect with rear axle axis hole, oil sealing and dust cover, the inner ring surface of the oil sealing is equipped with main lip successively in an axial direction, secondary lip and lateral lip mouth, its outer ring surface is equipped with cylindrical portion, the cylindrical portion is embedded in the axis hole inner peripheral surface of rear axle, from the end on the outside of the rear axle of cylindrical portion towards radial outside integrally formed with end face portion, the dust cover is set on the outside of rear axle, rear axle inner side end is interference fitted with the lateral lip mouth, the peripheral surface of periphery canister portion is interference fitted with the inner peripheral surface of oil sealing cylindrical portion.It can improve the leakproofness of rear axle shaft, reduce manufacture and assembly technology difficulty.
Description
Technical field
The utility model is related to drive systems after automobile, and in particular to a kind of car rear axle semi-axis sealing structure.
Background technology
Oil sealing is also known as oil baffle, and installation oil sealing prevents leaking and leaking for lubricating oil or lubricating grease, prevents dust from soaking
Enter, keeps the good lubrication condition of rolling or sliding friction part, prolong the service life.
Currently, referring to Fig. 1, the sealing structure of car rear axle semi-axis is in the prior art：Existing semiaxis be mounted on it is existing after
In bridge axle hole, existing oil sealing is installed between existing semiaxis bar portion and existing rear axle axis hole inner peripheral surface, is prevented in existing rear axle
Lubricating oil leak, and metal dust-proof cover is arranged on existing semiaxis, but the part that dustproof cover works is designed to mostly
Cylinder is parallel with the axis of existing oil sealing and existing semiaxis in terms of section, and dust-proof effect is poor, and sand and dust are easy to slide into existing oil
Envelope is then likely to occur existing oil sealing damage failure.Meanwhile dustproof cover can increase cost, increase manufacture and assembly technology difficulty.
Invention content
The purpose of this utility model is to provide a kind of car rear axle semi-axis sealing structure, can improve the close of rear axle shaft
Feng Xing reduces manufacture and assembly technology difficulty.
Car rear axle semi-axis sealing structure described in the utility model, including rear axle, the semiaxis being connect with rear axle axis hole, oil
Envelope and dust cover, the oil-sealing sleeve are set on semiaxis and are sealed to the sealing fluid in rear axle, the inner ring surface of the oil sealing
It is equipped with main lip, secondary lip and lateral lip mouth, outer ring surface successively in an axial direction and is equipped with cylindrical portion, the cylindrical portion is embedded in rear axle
Axis hole inner peripheral surface, it is described dust-proof to be provide with from the end on the outside of the rear axle of cylindrical portion towards radial outside integrally formed with end face portion
On the outside of the rear axle, rear axle inner side end is interference fitted with the lateral lip mouth, and the peripheral surface of periphery canister portion is interior with oil sealing cylindrical portion
Circumferential surface is interference fitted.
Further, the shaft shoulder of the semiaxis is equipped with the annular groove coaxial with semiaxis, the rear axle outside of the dust cover
End face is equipped with protrusion corresponding with the annular groove.
Further, the lip end of the main lip is towards on the inside of rear axle, and shock mount is embedded in lip, and lip end with
The peripheral surface sealing cooperation of semiaxis, is sealed the sealing fluid in rear axle.
Further, the lip end of the secondary lip is towards rear axle outside, and the peripheral surface of lip end and semiaxis seals
Cooperation, is sealed foreign.
Further, the oil sealing and dust cover are integrally formed.
The utility model compared with prior art, has the advantages that：
Coordinated respectively with the semiaxis shaft shoulder and rear axle beam hole end surface by the end face portion of oil sealing, form the first seal structures,
In addition, the male cooperation on annular groove and dust cover on semiaxis, forms second labyrinth type dust-proof sealing structure, while oil
The main lip of envelope and secondary lip coordinate with semiaxis bar portion, form third seal structures.By the three seal structures, effectively
Leakproofness of the rear axle shaft to foreign is improved, and since dust cover and oil sealing are integrally formed, reduces manufacture and dress
With technology difficulty.
Description of the drawings
Fig. 1 is the sealed structural representation of existing rear axle shaft；
Fig. 2 is the assembling schematic diagram of the utility model rear axle and semiaxis；
Fig. 3 is the cut-away illustration of the utility model rear axle shaft sealing structure；
Fig. 4 is the structural schematic diagram of the utility model oil sealing；
Fig. 5 is the cut-away illustration of the utility model oil sealing；
Fig. 6 is the cut-away illustration of the utility model rear axle；
Fig. 7 is the cut-away illustration of the utility model semiaxis.
In figure, 1-rear axle, 11-axis hole inner peripheral surfaces, 12-rear axle splines, 13-rear axle jump-ring slots, 2-semiaxis, 21-
Annular groove, 22-Formation of Axle Shaft Spline, 23-semiaxis clamp springs, 3-oil sealings, 31-main lips, 32-secondary lips, 33-lateral lip mouths,
34-cylindrical portions, 35-end face portions, 36-springs, 4-dust covers, 41-protrusions, 42-periphery canister portions, 5-existing rear axles,
6-existing semiaxis, 7-existing oil sealings, 8-existing dust covers.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the utility model.
Referring to Fig. 2 to Fig. 7, shown in car rear axle semi-axis sealing structure, including rear axle 1, semiaxis 2, oil sealing 3 and dust cover
4, shown semiaxis 2 be equipped with Formation of Axle Shaft Spline 22 and semiaxis clamp spring 23, respectively with the rear axle spline 12 and rear axle card in 1 axis hole of rear axle
13 corresponding matching of spring slot, semiaxis 2 are connected by Formation of Axle Shaft Spline 22 with rear axle spline 12, and semiaxis clamp spring 23 and rear axle jump-ring slot are passed through
13 realize axial restraint.
The oil sealing 3 is sheathed on semiaxis 2 and is sealed to the sealing fluid in rear axle 1, the inner ring surface of the oil sealing 3
It is equipped with main lip 31, secondary lip 32 and lateral lip mouth 33, outer ring surface successively in an axial direction and is equipped with cylindrical portion 34, the cylindrical portion 34 is embedding
Together in the axis hole inner peripheral surface 11 of rear axle 1, from the end on the outside of the rear axle of cylindrical portion 34 towards radial outside integrally formed with end face
Portion 35, the dust cover 4 are set on the outside of rear axle, and rear axle inner side end is interference fitted with the lateral lip mouth 33, periphery canister portion 42
The inner peripheral surface of cylindrical portion 34 of peripheral surface and oil sealing 3 be interference fitted.The lip end of the main lip 31 towards on the inside of rear axle,
Shock mount 36 is embedded in lip, and lip end and the peripheral surface sealing of semiaxis 2 coordinate, and are carried out to the sealing fluid in rear axle close
Envelope.The lip end of the pair lip 32 is towards rear axle outside, and lip end and the peripheral surface sealing of semiaxis 2 coordinate, externally
Portion's foreign matter is sealed.
The shaft shoulder of the semiaxis 2 is equipped with the annular groove 21 coaxial with semiaxis 2, the rear axle outboard end of the dust cover 4
Face is equipped with corresponding with the annular groove 21 raised 41.Described raised 41 with 3 global formation of dust cover, then with oil sealing 3 be molded
It is sulfided into an one-piece parts.
When specific works, the shaft shoulder of semiaxis 2 and 1 axis hole end face of rear axle coordinate with the both sides of the end face portion of oil sealing 3 35 respectively,
Form the first seal structures.The upper annular groove 21 of 2 shaft shoulder of semiaxis coordinates with the protrusion 41 of dust cover 4, forms second
Sealing structure.The bar portion of the main lip 31 of oil sealing 3 and secondary lip 32 and semiaxis 2 coordinates, and cylindrical portion 34 is embedded in the axis hole of rear axle 1
Inner peripheral surface 11 forms third seal structures.Rear axle half is effectively increased including the sealing structure that oil sealing 3 and dust cover 4 combine
Shaft connection place is to the leakproofness of foreign, will and relative to existing oil sealing 7 and existing dust cover 8 be individually designed and assembly
Oil sealing 3 and dust-proof 4 cover integration, reduce manufacture and assembly technology difficulty.
Claims (5)
1. a kind of car rear axle semi-axis sealing structure, including rear axle（1）The semiaxis being connect with rear axle axis hole（2）, feature exists
In：It further include oil sealing（3）And dust cover（4）；The inner ring surface of the oil sealing is equipped with main lip successively in an axial direction（31）, secondary lip
（32）With lateral lip mouth（33）, outer ring surface is equipped with cylindrical portion（34）, the cylindrical portion is embedded in the axis hole inner peripheral surface of rear axle（11）,
From the end on the outside of the rear axle of cylindrical portion towards radial outside integrally formed with end face portion（35）；The dust cover is set to outside rear axle
Side, rear axle inner side end are interference fitted with the lateral lip mouth, periphery canister portion（42）Peripheral surface and oil sealing cylindrical portion inner circumferential
Face is interference fitted.
2. car rear axle semi-axis sealing structure according to claim 1, it is characterised in that：The semiaxis（2）The shaft shoulder on
Equipped with the annular groove coaxial with semiaxis（21）, the dust cover（4）Rear axle end face outside be equipped with and the annular groove pair
The protrusion answered（41）.
3. car rear axle semi-axis sealing structure according to claim 1 or 2, it is characterised in that：The main lip（31）'s
Lip end embeds shock mount towards rear axle inside in lip（36）, and lip end and semiaxis（2）Peripheral surface sealing match
It closes, to rear axle（1）Interior sealing fluid is sealed.
4. car rear axle semi-axis sealing structure according to claim 1 or 2, it is characterised in that：The pair lip（32）'s
Lip end is towards on the outside of rear axle, and lip end and semiaxis（2）Peripheral surface sealing cooperation, foreign is sealed.
5. car rear axle semi-axis sealing structure according to claim 1 or 2, it is characterised in that：The oil sealing（3）With it is dust-proof
Cover（4）It is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820325689.9U CN207935439U (en) | 2018-03-09 | 2018-03-09 | A kind of car rear axle semi-axis sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820325689.9U CN207935439U (en) | 2018-03-09 | 2018-03-09 | A kind of car rear axle semi-axis sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207935439U true CN207935439U (en) | 2018-10-02 |
Family
ID=63654894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820325689.9U Active CN207935439U (en) | 2018-03-09 | 2018-03-09 | A kind of car rear axle semi-axis sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207935439U (en) |
-
2018
- 2018-03-09 CN CN201820325689.9U patent/CN207935439U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |