CN212839387U

CN212839387U - Hub oil seal

Info

Publication number: CN212839387U
Application number: CN202021704499.1U
Authority: CN
Inventors: 胡志根; 刘春阳; 寇贵平; 孟兆恩
Original assignee: Zhejiang Oufu Sealing Parts Co ltd
Current assignee: Zhejiang Oufu Sealing Parts Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-03-30
Anticipated expiration: 2030-08-14

Abstract

The utility model relates to the technical field of sealing elements, aim at providing a wheel hub oil blanket, including the rubber body, the rubber body includes interior sealing and outer sealing, it is equipped with the skeleton to inlay between outer sealing and the interior sealing, be provided with round annular clamping groove along circumference on the outer periphery wall of outer sealing, still be provided with round and annular clamping groove joint complex sealing ring on the outer periphery wall of outer sealing, be provided with the arch of protrusion in the outer periphery of outer sealing on the outer periphery wall of sealing ring; the utility model discloses make sealing ring and rubber body can dismantle and be connected, in time change after the protruding wearing and tearing on the sealing ring to guarantee the leakproofness of external seal portion and sticis the effect.

Description

Hub oil seal

Technical Field

The utility model relates to a sealing member technical field, in particular to wheel hub oil blanket.

Background

The wheel hub oil seal is used for sealing lubricating oil inside a wheel hub, and the oil seal mainly has the following two functions: the leakage of lubricating oil is prevented through the main sealing lip of the oil seal, so that the bearing is ensured to have good lubricating conditions, and the lubricating oil is prevented from polluting a brake pad, a brake drum and the like to cause the weakening or failure of the braking capacity; prevent through the dust lip that outside foreign matter from invading inside the wheel hub, cause the damage to the bearing.

In the prior art, the chinese patent document with the publication number of CN202251973U discloses a multifunctional hub oil seal, which includes a metal framework, an inner sealing colloid located at the inner end of the metal framework and in close contact with a working shaft, an outer sealing colloid located at the outer side surface of the metal framework and in close fit with the internal thread of an outer screw cap, and a spring sleeved on the inner sealing colloid, wherein the upper end of the metal framework is in bearing contact with the bottom of the outer screw cap, and the lower bottom surface of the metal framework is in bearing contact with an outer connecting ring. The outer sealing colloid contains a thread structure matched with the thread of the outer spiral cover, and a double-pressure-relief auxiliary lip is arranged below the inner sealing colloid.

The above prior art solutions have the following drawbacks: the thread structure and the outer sealing colloid are integrally formed, and the thread structure is easy to wear after being matched with an outer spiral cover of an axle for a long time, so that the sealing and compressing effects are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a wheel hub oil blanket makes the sealing ring can dismantle with the rubber body and is connected, in time changes after the protruding wearing and tearing on the sealing ring to guarantee the leakproofness of external seal portion and sticis the effect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a wheel hub oil seal, includes the rubber body, the rubber body includes interior sealing and external seal portion, it is equipped with the skeleton to inlay between external seal portion and the interior sealing, be provided with round ring groove along circumference on the outer circumferential wall of external seal portion, still be provided with round and ring groove joint complex sealing ring on the outer circumferential wall of external seal portion, be provided with the arch of protrusion in the outer circumferential surface of external seal portion on the outer circumferential wall of sealing ring.

Through adopting above-mentioned technical scheme, the effect that outer sealing portion reaches the fitting surface that sticiss wheel hub through the arch on the sealing ring, and the sealing ring provides sealed effect simultaneously, will have elastic sealing ring and take off the sealing ring of more renewing from ring groove after protruding wearing and tearing to guarantee the leakproofness of outer sealing portion and sticis the effect.

The utility model discloses further set up to: the inner walls of two opposite sides of the annular clamping groove incline towards the direction away from each other, and the opening width of the annular clamping groove is larger than the width of the groove bottom.

Through adopting above-mentioned technical scheme, the slope inner wall of ring channel is convenient for the sealing ring and is taken off from ring channel groove.

The utility model discloses further set up to: the both ends of sealing ring are the tip of slope inwards, tip and the corresponding slope inner wall laminating of ring groove, the tip of slope is last to be provided with the round sealing washer along circumference.

Through adopting above-mentioned technical scheme, the sealing washer provides sealed effect, prevents that the dust granule from entering into in the wheel hub between sealing ring and the ring groove.

The utility model discloses further set up to: the inner circumferential wall of the sealing ring is circumferentially provided with a plurality of limiting strips, and the bottom of the annular clamping groove is circumferentially provided with a plurality of limiting grooves matched with the limiting strips in an inserting manner.

Through adopting above-mentioned technical scheme, spacing strip plays and prevents that the sealing ring from taking place pivoted effect for the rubber body, prevents that during operation shaft portion from taking place idle running.

The utility model discloses further set up to: the outer circumferential wall of the rubber body is sleeved with a circle of protection ring which covers the outer circumferential wall of the sealing ring.

By adopting the technical scheme, the protection ring plays a role in protecting the sealing ring before the oil seal is used, and prevents dust from attaching to the outer circumferential wall of the sealing ring, so that the bulge is abraded due to the dust after the oil seal is installed.

The utility model discloses further set up to: the inner wall of the protection ring is provided with a circle of protection layer, and the circumferential inner wall of the protection layer is attached to the circumferential outer wall of the sealing ring.

Through adopting above-mentioned technical scheme, the protective layer prevents that the arch setting from producing wearing and tearing in the protective ring, and the setting of the interior perisporium of arch and protective layer makes the protective ring be difficult for droing from the sealing ring simultaneously.

The utility model discloses further set up to: the outer circumferential wall of the protection ring is provided with a hanging block, and the hanging block is provided with a hanging hole.

By adopting the technical scheme, the hanging block is used for hanging the protection ring.

The utility model discloses further set up to: and a plurality of weight reduction grooves are formed in the inner side wall of the framework along the circumferential direction.

Through adopting above-mentioned technical scheme, subtract the lightweight demand of skeleton is satisfied in the setting of heavy groove.

To sum up, the beneficial effects of the utility model are that:

the effect that the fitting surface of wheel hub is sticis reached through the arch on the sealing ring in external seal portion, and the sealing ring provides sealed effect simultaneously, will have elastic sealing ring and take off the sealing ring of more renewing from ring groove after protruding wearing and tearing to guarantee the leakproofness of external seal portion and sticis the effect.

Drawings

Fig. 1 is a schematic partial cross-sectional view of the present invention;

fig. 2 is an enlarged schematic view at a in the drawing.

Reference numerals: 1. a rubber body; 2. an outer seal portion; 21. an annular neck; 22. a limiting groove; 3. an inner seal portion; 4. a framework; 41. a weight reduction groove; 5. a seal ring; 51. a protrusion; 52. an angled end; 53. a limiting strip; 6. a seal ring; 7. a guard ring; 71. a protective layer; 72. hanging blocks; 721. and (7) hanging holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a hub oil seal, as shown in fig. 1 and 2, the hub oil seal comprises a rubber body 1, the rubber body 1 comprises an inner sealing part 3 and an outer sealing part 2 which are integrally formed, a framework 4 is fixedly embedded between the outer sealing part 2 and the inner sealing part 3, and a plurality of weight reduction grooves 41 are formed in the inner side wall of the framework 4 along the circumferential direction.

As shown in fig. 1 and 2, a circle of integrally formed ring-shaped clamping grooves 21 is circumferentially arranged on the outer circumferential wall of the outer sealing portion 2, a circle of sealing rings 5 in clamping fit with the ring-shaped clamping grooves 21 is further arranged on the outer circumferential wall of the outer sealing portion 2, the sealing rings 5 are elastic members, and the outer circumferential surface of the sealing rings 5 is flush with the outer circumferential surface of the outer sealing portion 2. The outer circumferential wall of the sealing ring 5 is integrally formed with a protrusion 51 protruding from the outer circumferential surface of the outer sealing portion 2, and the protrusion 51 enables the outer sealing portion 2 to have pressing and sealing effects at the same time. The inner walls of two opposite sides of the annular clamping groove 21 incline towards the direction away from each other, the opening width of the annular clamping groove 21 is larger than the width of the groove bottom, two ends of the sealing ring 5 are inclined ends 52 inclining inwards, and the inclined ends 52 are attached to the corresponding inclined inner walls of the annular clamping groove 21; a circle of sealing ring 6 is fixedly embedded on the inclined end 52 along the circumferential direction, the sealing ring 6 is used for enhancing the sealing performance between the sealing ring 5 and the ring clamping groove 21, and the arrangement of the inclined end 52 enables the sealing ring 6 to be pressed by the pressing force from the protrusion 51, so that the sealing effect is better.

As shown in fig. 1 and 2, a plurality of limiting strips 53 are integrally formed on the inner circumferential wall of the sealing ring 5 along the circumferential direction, and a plurality of limiting grooves 22 are formed on the bottom of the ring-shaped clamping groove 21 along the circumferential direction, and the limiting grooves are in insertion fit with the limiting strips 53. The stop strip 53 cooperates with the stop groove 22 to prevent rotation of the sealing ring 5 relative to the outer seal 2. The outer circumferential wall of the rubber body 1 is sleeved with a protection ring 7 which covers the outer circumferential wall of the sealing ring 5. A circle of protective layer 71 is fixedly connected to the inner wall of the protective ring 7, the protective layer 71 is a felt layer to protect the protrusion 51 from abrasion, and the circumferential inner wall of the protective layer 71 is attached to the circumferential outer wall of the sealing ring 5. The outer circumferential wall of the protection ring 7 is fixedly connected with a hanging block 72, and the hanging block 72 is provided with a hanging hole 721 convenient for hanging.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a wheel hub oil blanket, includes the rubber body (1), the rubber body (1) includes interior sealing (3) and external sealing (2), it is equipped with skeleton (4), its characterized in that to inlay between external sealing (2) and interior sealing (3): be provided with round ring groove (21) along circumference on the outer circumferential wall of external sealing portion (2), still be provided with round and ring groove (21) joint complex sealing ring (5) on the outer circumferential wall of external sealing portion (2), be provided with arch (51) of protrusion in the outer periphery of external sealing portion (2) on the outer circumferential wall of sealing ring (5).

2. The wheel hub oil seal of claim 1, wherein: the inner walls of two opposite sides of the annular clamping groove (21) incline towards the direction away from each other, and the opening width of the annular clamping groove (21) is greater than the width of the groove bottom.

3. The wheel hub oil seal of claim 2, wherein: the both ends of sealing ring (5) are tilt end (52) of leanin, tilt end (52) and the corresponding slope inner wall laminating of ring groove (21), be provided with round sealing washer (6) along circumference on tilt end (52).

4. The wheel hub oil seal of claim 1, wherein: the inner circumferential wall of the sealing ring (5) is circumferentially provided with a plurality of limiting strips (53), and the bottom of the annular clamping groove (21) is circumferentially provided with a plurality of limiting grooves (22) which are in plug-in fit with the limiting strips (53).

5. The wheel hub oil seal of claim 1, wherein: the outer circumferential wall of the rubber body (1) is sleeved with a ring of protection rings (7) which cover the outer circumferential wall of the sealing ring (5).

6. The wheel hub oil seal of claim 5, wherein: the inner wall of the protection ring (7) is provided with a circle of protection layer (71), and the circumferential inner wall of the protection layer (71) is attached to the circumferential outer wall of the sealing ring (5).

7. The wheel hub oil seal of claim 5, wherein: the outer circumferential wall of the protection ring (7) is provided with a hanging block (72), and the hanging block (72) is provided with a hanging hole (721).

8. The wheel hub oil seal of claim 1, wherein: and a plurality of weight reduction grooves (41) are formed in the inner side wall of the framework (4) along the circumferential direction.