CN209683339U - The mounting structure of hub oil seal - Google Patents

Abstract

The mounting structure of hub oil seal, including wheel hub, hub oil seal, hub oil seal includes oil sealing inner ring and the oil sealing inner ring oil sealing outer ring fastened and the flexible seals being clamped between oil sealing inner ring and oil sealing outer ring, the inner surface of wheel hub is provided with a limit end face, and oil sealing inner ring inner end is connected to the limit end face；Bearing and the gasket on the outside of bearing are also equipped in wheel hub, gasket is resisted against the end face outside of bearing outer ring, and gasket has a compression face far from the side of bearing, which is resisted against the inner end of oil sealing outer ring.The utility model is during installing spindle nose, oil sealing outer ring and oil sealing outer ring are limited by wheel hub and gasket respectively, the two is able to maintain original mated condition, to avoid flexible seals from being squeezed by transition, so in vehicle travel process, oil sealing outer ring and oil sealing inner ring keep original fit clearance, and biggish frictional resistance is generated when the two being avoided to relatively rotate, prevents lubricating oil temperature from increasing.

Description

The mounting structure of hub oil seal

Technical field

The utility model relates to vehicle spare and accessory parts technical fields, and in particular to a kind of mounting structure of hub oil seal.

Background technique

Currently, hub oil seal is generally mounted in the oil sealing groove being arranged on vehicle hub, it is benefit first during installation Oil sealing is caught in oil sealing groove with press mounting tool, is then fitted into wheel hub by the spindle nose of vehicle, when spindle nose and wheel hub assemble, It needs spindle nose being caught in oil sealing, since hub oil seal generally comprises oil sealing inner ring and oil sealing outer ring, is loaded into wheel in hub oil seal After in hub groove, the inward bottom wall in oil sealing groove, when spindle nose is caught in wheel hub, spindle nose are supported in the inner end of oil sealing inner ring Inner wall is bonded oil sealing outer ring, generates biggish frictional force between the two, therefore, during spindle nose is packed into, rubs above-mentioned Under the action of wiping power, oil sealing outer ring can generate relative displacement in the axial of wheel hub with oil sealing inner ring, in this way, being installed in spindle nose Afterwards, cause to generate biggish contact stress between oil sealing outer ring and oil sealing inner ring, which makes in oil sealing outer ring and oil sealing Flexible seals between ring are squeezed by transition, and in vehicle travel process, oil sealing outer ring and oil sealing inner ring are relatively rotated and generated Frictional force it is larger, so that the operating temperature of hub oil seal be made sharply to increase, influence the normal work of lubricating oil.

Utility model content

In view of the deficiencies of the prior art, the purpose of this utility model is intended to provide a kind of mounting structure of hub oil seal, It can spindle nose install when, avoid between oil sealing outer ring and oil sealing inner ring generate relative movement, thus avoid oil sealing inner ring and Sealing element between oil sealing outer ring is squeezed by transition.

To achieve the above objectives, the present invention adopts the following technical solutions:

The mounting structure of hub oil seal, including wheel hub, hub oil seal, hub oil seal include oil sealing inner ring and oil sealing inner ring The oil sealing outer ring of fastening and the flexible seals being clamped between oil sealing inner ring and oil sealing outer ring, the inner surface setting of wheel hub There is a limit end face, oil sealing inner ring inner end is connected to the limit end face；It is also equipped with bearing in wheel hub and is located at outside bearing The gasket of side, gasket are resisted against the end face outside of bearing outer ring, and gasket has a compression face, the compression face far from the side of bearing It is resisted against the inner end of oil sealing outer ring.

Gasket is provided with first boss far from what the side of bearing was protruded, and compression face is the end face of the first boss.

The end face protrusion of first boss is provided with second boss, and the end face of the second boss forms an axis confined planes.

Oil sealing outer ring include outer ring end wall and as outer ring end wall inner end towards the first ring made of gasket bending Wall, the first ring wall are supported on compression face far from one end of outer ring end wall；Oil sealing inner ring includes inner ring end wall, and has inner ring end The outboard end of wall is supported far from one end of inner ring end wall in positive stop end towards the second ring wall made of gasket bending, second ring wall On face.

Hub oil seal further includes a snap ring, which is set in the periphery of the first ring wall, flexible seals quilt It is clamped between snap ring and the first ring wall, sealing lips is additionally provided on flexible seals, which is clamped in Between outer ring end wall and inner ring end wall.

The utility model has the beneficial effects that:

Compared with the prior art, the utility model is during installing spindle nose, oil sealing outer ring and oil sealing outer ring respectively by Wheel hub and gasket limit, the two is able to maintain original mated condition, will not generate biggish contact stress, to avoid soft Property sealing element squeezed by transition, so in vehicle travel process, oil sealing outer ring and oil sealing inner ring keep original fit clearance, Biggish frictional resistance is generated when the two being avoided to relatively rotate, and prevents lubricating oil temperature from increasing.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the enlarged view in Fig. 1 at A；

Fig. 3 is the scheme of installation of the utility model；

Fig. 4 is the enlarged view in Fig. 3 at B.

Specific embodiment

In the following, being further described in conjunction with the drawings and specific embodiments to the utility model:

It as shown in Figure 1, 2, is a kind of mounting structure of hub oil seal of the utility model comprising wheel hub 10, wheel hub oil Envelope 20, bearing 30 and gasket 40, wherein hub oil seal includes oil sealing outer ring 21, oil sealing outer ring 22 and flexible seals 23, oil Envelope outer ring 21 and oil sealing inner ring 22 are mutually interlocked, and flexible seals 23 are clamped between oil sealing outer ring 21 and oil sealing inner ring 22, use The gap formed between hermetic oil seal outer ring 21 and oil sealing inner ring 22；The inner surface of wheel hub 10 is provided with a limit end face 11, The limit end face 11 can be the step surface that 10 inner surface of wheel hub opens up, and the inner end of oil sealing inner ring 22 is connected to the limit end face On 11；Bearing 30 and gasket 40 are installed in wheel hub 10, and gasket 40 is located at the outside of bearing 30, and gasket 40 is supported In the end face outside of 30 outer ring of bearing, gasket 40 has a compression face 411 far from the side of bearing 30, which supports In the inner end of oil sealing outer ring 21, in this way, the oil sealing inner ring 22 of above-mentioned hub oil seal 20 and oil sealing outer ring 21 are supported respectively It limits on end face 11 and compression face 411, i.e. the freedom degree point of oil sealing inner ring 22 and oil sealing outer ring 21 towards 10 medial movement of wheel hub It is not limited by wheel hub 10 and gasket 40.

Referring to Fig. 3,4, when installing spindle nose 50, the inside of the outer surface contact seal outer ring 21 of spindle nose 50, and and oil sealing Outer ring 21 generates biggish frictional force, since the inner end of oil sealing outer ring 21 is limited by the compression face 411 on gasket 40, Above-mentioned frictional force can not make to push oil sealing outer ring 21 towards the medial movement of wheel hub 10, then make oil sealing outer ring 21 and oil sealing Inner ring 22 keeps synchronizing, and will not generate relative displacement, i other words, during spindle nose 50 are installed, oil sealing outer ring 21 and oil sealing Outer ring 22 keeps original state, will not generate biggish contact stress between the two, to avoid 23 quilt of flexible seals Transition squeezes, in this way, oil sealing outer ring 21 and oil sealing inner ring 22 keep original fit clearance in vehicle travel process, avoids The two generates biggish frictional resistance when relatively rotating, and prevents lubricating oil temperature from increasing.

In a preferred embodiment, it is provided with first boss 41 far from what the side of bearing 30 was protruded in gasket 40, by Pressure surface 411 be the first boss 41 end face, using the first boss 41 for protruding from 40 surface of gasket come to oil sealing outer ring 21 into Row limit, can be such that gasket 40 effectively contacts with the inner end of oil sealing outer ring 21.Further, on the gasket 40 of the utility model It is additionally provided with by the second boss 42 of the end face protrusion of first boss 41, the end face of the second boss 42 forms an axis confined planes 421, which is used to limit spindle nose 50 when spindle nose 50 is installed, specifically, when spindle nose 50 is installed in place Afterwards, the step surface on spindle nose 50 presses against on axis confined planes 421, to prevent spindle nose 50 from continuing to 10 medial movement of wheel hub, thus Hub oil seal 20 is prevented to be subject to crushing.

The specific structure of the above-mentioned hub oil seal 20 of the utility model is as follows: oil sealing outer ring 21 includes 211 He of outer ring end wall First ring wall 212, wherein the first ring wall 212 is formed by the direction bending of inner end towards the gasket 40 of outer ring end wall 211, the The outer surface of the inner surface and spindle nose 50 of one ring wall 212 is engaged, and the first ring wall 212 is supported far from one end of outer ring end wall 211 It withstands on compression face 411, can be radially outer in one end setting one of first ring wall 212 far from outer ring end wall 211 Bending part, to increase the contact area of the first ring wall 212 with compression face 411, thus enable compression face 411 preferably to oil sealing outside Ring 21 plays the role of limit；Oil sealing inner ring 22 includes inner ring end wall 221 and the second ring wall 222, and the second ring wall 222 is by inner ring end The direction bending of the outboard end of wall 221 towards gasket 40 forms, and the second ring wall 222 is supported far from one end of inner ring end wall 221 It limits on end face 11.

In addition, hub oil seal 20 includes a snap ring 24, which is set in the outer of the first ring wall 212 It encloses, the main part of flexible seals 23 is clamped between snap ring 24 and the first ring wall 212, in this way, by flexible sealing Part 23 is fixed, and sealing lips 231 is provided on flexible seals 23, and sealing lips 231 is clamped in outer ring end wall 211 and inner ring Between end wall 221, so, it is ensured that the leakproofness between oil sealing outer ring 21 and oil sealing inner ring 22.

Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality Example is applied the utility model is described in detail, those skilled in the art should understand that, it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features, and these It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (5)

1. the mounting structure of hub oil seal, which is characterized in that including wheel hub, hub oil seal, hub oil seal include oil sealing inner ring, with The oil sealing outer ring that oil sealing inner ring fastens and the flexible seals that are clamped between oil sealing inner ring and oil sealing outer ring, wheel hub it is interior Surface is provided with a limit end face, and oil sealing inner ring inner end is connected to the limit end face；Bearing and position are also equipped in wheel hub Gasket on the outside of bearing, gasket are resisted against the end face outside of bearing outer ring, and gasket has a compression face far from the side of bearing, The compression face is resisted against the inner end of oil sealing outer ring.

2. the mounting structure of hub oil seal as described in claim 1, which is characterized in that gasket is protruded far from the side of bearing It is provided with first boss, compression face is the end face of the first boss.

3. the mounting structure of hub oil seal as claimed in claim 2, which is characterized in that the setting of the end face protrusion of first boss There is second boss, the end face of the second boss forms an axis confined planes.

4. the mounting structure of hub oil seal as described in claim 1, which is characterized in that oil sealing outer ring include outer ring end wall, with And as outer ring end wall inner end towards the first ring wall made of gasket bending, the first ring wall is supported far from one end of outer ring end wall On compression face；Oil sealing inner ring includes inner ring end wall, and has the outboard end of inner ring end wall towards second made of gasket bending Ring wall, second ring wall are supported on limit end face far from one end of inner ring end wall.

5. the mounting structure of hub oil seal as claimed in claim 4, which is characterized in that hub oil seal further includes an elastic card Ring, the snap ring are set in the periphery of the first ring wall, and flexible seals are clamped between snap ring and the first ring wall, soft It is additionally provided with sealing lips on property sealing element, which is clamped between outer ring end wall and inner ring end wall.