CN218598641U

CN218598641U - Low-torque self-adjusting sealing assembly

Info

Publication number: CN218598641U
Application number: CN202123241656.7U
Authority: CN
Inventors: 陈伟军; 汪峰
Original assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Current assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2023-03-10
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to a low torque is from adjusting seal assembly, including skeleton I, skeleton II and skeleton III, skeleton I and II settings of skeleton circle on the wheel hub outer lane, and skeleton III sets up on the ring flange, forms the raceway between wheel hub outer lane and the ring flange, raceway outside vacuole formation and space, skeleton I, skeleton II and skeleton III are located raceway outside cavity, and the parcel has water-swelling rubber on the skeleton I, and II parcels of skeleton have outsourcing rubber, and the protruding and skeleton III of outsourcing rubber cooperate. The utility model discloses profitable effect is: the utility model discloses an add long and narrow sealed passageway, produce the labyrinth effect, increase the path length that muddy water invaded, and then increase the degree of difficulty that external muddy water dust invaded the bearing raceway, reduce the destruction of dirt particle impurity to seal lip in the muddy water. The contact lip is reduced, the water-absorbing rubber is additionally arranged, high sealing performance is ensured, low torque is realized, and the purpose of self-adjusting sealing performance is achieved.

Description

Low-torque self-adjusting sealing assembly

Technical Field

The utility model relates to a wheel hub bearing structure, especially a low torque self-interacting seal assembly.

Background

The conventional sealing assembly is adopted in the conventional hub bearing, a muddy water intrusion channel of a sealing structure is relatively open, a muddy water intrusion path is relatively simple, a plurality of contact lips are provided, and the requirement of low torque cannot be met while the sealing performance is improved. And the traditional sealing assembly structure can not be correspondingly adjusted according to the wading condition. Therefore, in the using process, splashing muddy water and impurity particles in the muddy water can easily enter and contact the sealing lip, and in the long-time rotating and loading process, the muddy water and the impurity particles can accelerate the abrasion of the sealing lip, the sealing failure is easily accelerated, and the risks of muddy water invasion raceway failure, grease pollution and grease overflow are caused. More contact lips cannot meet the requirement of low torque while improving the sealing performance.

Disclosure of Invention

The utility model discloses solve above-mentioned prior art's shortcoming, provide a friction torque reduces, the better low torque self-interacting seal assembly of sealing performance.

The utility model provides a technical scheme that its technical problem adopted: this kind of low torque self-interacting seal assembly, including skeleton I, skeleton II and skeleton III, skeleton I and II settings of skeleton are on the wheel hub outer lane, and skeleton III sets up on the ring flange, forms the raceway between wheel hub outer lane and the flange dish, the raceway outside forms cavity and space, and skeleton I, skeleton II and skeleton III are located raceway outside cavity, and the parcel has the water-absorbing expansion rubber on the skeleton I, and II parcels of skeleton have outsourcing rubber, and the protruding and the III cooperations of skeleton of outsourcing rubber.

The outsourcing rubber protrusion is lip I, lip II and lip III, and lip I, lip II and lip III form cavity I, cavity II and cavity III with between the skeleton III, and skeleton III cooperatees with the ring flange, forms cavity IV.

And the cavity IV is filled with a sealant.

The framework III is designed in a U shape, the framework II is provided with an inward-folding structure, and the framework III is matched with the framework II to form a long and narrow bent sealing channel to generate a labyrinth effect.

And rubber protrusions are arranged on the outer rubber of the framework II and are in contact with the outer ring of the hub.

And a groove is arranged on the outer ring of the hub.

The utility model discloses profitable effect is: the utility model discloses an add long and narrow sealed passageway, produce the labyrinth effect, increase the path length that muddy water invaded, and then increase the degree of difficulty that external muddy water dust invaded the bearing raceway, reduce the destruction of dirt particle impurity in the muddy water to the seal lip. The contact lip is reduced, and the purpose of low torque is achieved while ensuring high sealing performance. The water-absorbing expansion rubber is arranged, so that the size of a gap between the framework and the flange plate is changed under the condition of long-term wading, and the opening degree of the inlet is adjusted, so that the effect of adjusting the sealing performance is achieved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: skeleton I1, skeleton II 2, skeleton III 3, outsourcing rubber 4, the swelling rubber that absorbs water 5, lip I6, lip II 7, lip III 8, rubber are protruding 9, cavity I10, cavity II 11, cavity III 12, cavity IV 13, recess 14, wheel hub outer lane 15, ring flange 16.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in the figure, this kind of low torque self-interacting seal assembly, including skeleton I1, skeleton II 2 and skeleton III 3, skeleton I1 and skeleton II 2 set up on wheel hub outer lane 15, and skeleton III 3 sets up on ring flange 16, forms the raceway between wheel hub outer lane 15 and the ring flange 16, the raceway outside forms cavity and space, and skeleton I1, skeleton II 2 and skeleton III 3 are located raceway outside cavity, and the parcel has the inflation rubber 5 that absorbs water on skeleton I1, and under the serious condition of wading with water for a long time, through the inflation that absorbs water, reduce with the space passageway of ring flange, reduce the inflow of muddy water, play self-interacting sealing performance's effect.

The framework II 2 is wrapped with an outer wrapping rubber 4, and the bulges of the outer wrapping rubber 4 are matched with the framework III 3. The protrusion of outsourcing rubber 4 is lip I6, lip II 7 and lip III 8, forms cavity I10, cavity II 11 and cavity III 12 between lip I6, lip II 7 and lip III 8 and skeleton III 3, and skeleton III 3 cooperatees with ring flange 16, forms cavity IV 13, and cavity IV 13 intussuseption is filled with the sealant, plays the sealing effect, prevents effectively that water or impurity from getting into inside the wheel hub bearing, further optimizes sealing performance. Skeleton III 3 is the U-shaped design, and skeleton II 2 is equipped with the infolding structure, and skeleton III 3 cooperatees with skeleton II 2 and forms long and narrow sealed passageway of buckling, produces the labyrinth effect, has increased the path length that muddy water invaded, and then increases the degree of difficulty that external muddy water dust invaded the bearing raceway. The groove 14 is formed in the outer ring 15 of the hub, water entering the groove 14 can be discharged from the lower portion along the groove 14 through gravity, flow guiding is facilitated, and muddy water flowing into the cavity I10 directly is reduced. The outer rubber coating 4 on the framework II 2 reduces the gap between the framework II and the flange plate 16 to form pre-sealing, and reduces water flow entering the cavity I10. The rubber protrusion 9 is arranged on the outer rubber coating 4 of the framework II 2, and the rubber protrusion 9 is in contact with the hub outer ring 15 to play a role in fixing the framework II 2.

A cavity I10 formed by a water flow skeleton III 3 and a lip I6 and guided by a labyrinth channel prevents water flow from directly entering a sealed cavity II 11. The cavity I10 can be used for temporarily storing water when a large amount of muddy water is poured in, and meanwhile water in the cavity I10 can be effectively discharged in time under the action of centrifugal force. A gap is reserved between the lip I6 and the framework III 3 in a natural state, and the lip I is used as a first lip defense line for preventing muddy water from splashing into the cavity II 11. Lip II 7 contacts with the rotating framework in a natural state and is used as a first lip line in the sealed cavity. Lip II 7 and the cavity II 11 that rotates the skeleton and form can play the short-term retaining effect when a large amount of muddy water gushes out under the deep water position operating mode as the retaining chamber. Lip III 8 is for keeping off the oil lip, plays the leakage that prevents the interior lubricating grease of raceway, avoids its and III 12 interior lip II 7 of cavity, the regional effect that adds the grease and mix of lip III 8.

The utility model discloses under the prerequisite of ensureing sealing performance, reduced friction torque, through the labyrinth passageway, increased the degree of difficulty of muddy water invasion, improved sealing performance. Meanwhile, the self-adjustment performance of the sealing performance is improved, and the requirements of different use conditions can be met.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The utility model provides a low torque is from adjusting seal assembly, includes skeleton I (1), skeleton II (2) and skeleton III (3), characterized by: skeleton I (1) and skeleton II (2) set up on wheel hub outer lane (15), and skeleton III (3) set up on ring flange (16), form the raceway between wheel hub outer lane (15) and ring flange (16), raceway outside vacuole formation and space, skeleton I (1), skeleton II (2) and skeleton III (3) are located raceway outside cavity, and the parcel has water absorption expansion rubber (5) on skeleton I (1), and skeleton II (2) is upwrapped has outsourcing rubber (4), and the arch of outsourcing rubber (4) cooperatees with skeleton III (3).

2. The low torque, self adjusting seal assembly of claim 1, wherein: outsourcing rubber (4) protruding be lip I (6), lip II (7) and lip III (8), form cavity I (10), cavity II (11) and cavity III (12) between lip I (6), lip II (7) and lip III (8) and skeleton III (3), skeleton III (3) and ring flange (16) cooperate, form cavity IV (13).

3. The low torque, self adjusting seal assembly of claim 2, wherein: and a sealant is filled in the cavity IV (13).

4. A low torque, self adjusting seal assembly according to claim 1 or claim 2, wherein: skeleton III (3) are the U-shaped design, and skeleton II (2) are equipped with infolding structure, and skeleton III (3) cooperate with skeleton II (2) to form long and narrow sealed passageway of buckling, produce the labyrinth effect.

5. The low torque, self adjusting seal assembly of claim 1, wherein: and rubber protrusions (9) are arranged on the outer wrapping rubber (4) of the framework II (2), and the rubber protrusions (9) are in contact with the outer ring (15) of the hub.

6. The low torque, self adjusting seal assembly of claim 1, wherein: and a groove (14) is arranged on the outer ring (15) of the hub.