CN212564081U

CN212564081U - Magnetic sealing assembly for end face gear hub bearing unit

Info

Publication number: CN212564081U
Application number: CN202020183081.4U
Authority: CN
Inventors: 汪峰; 刘煜
Original assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Current assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2021-02-19
Anticipated expiration: 2030-02-19

Abstract

The utility model discloses a face gear wheel hub magnetic seal subassembly for bearing unit mainly includes static skeleton and the rotation skeleton of setting in the circle, inboard sealing ring of setting on the outer lane. The utility model has the advantages that: on the basis that the conventional hub magnetic sealing component bears the bearing raceway seal, the combination of an inner side sealing ring is added. The addition of the inner seal ring further prevents the failure caused by the intrusion of muddy water from the fitting of the inner ring and the seal assembly, as compared with the conventional hub bearing. Meanwhile, due to the addition of the inner sealing ring, the problem of transmission failure caused by muddy water intrusion at the matching position of the gear surface of the ball cage and the gear surface of the bearing is solved, the spline of the matching end surface is protected in a sealing manner, and the transmission efficiency of the end surface spline is ensured.

Description

Magnetic sealing assembly for end face gear hub bearing unit

Technical Field

The utility model relates to a wheel hub bearing field, concretely relates to face gear wheel hub magnetic seal subassembly for bearing unit.

Background

For the end face gear hub bearing, if the matching position of the end face tooth surface and the driving shaft ball cage head tooth surface is not protected in a sealing way, the end face tooth surface and the driving shaft ball cage head tooth surface are easily corroded by muddy water in an actual road condition, so that the corrosion and the failure of the matching position are caused, and the transmission of an end face spline is influenced. Therefore, a novel seal ring assembly needs to be designed to realize effective sealing of the matched spline.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a magnetic sealing component for a hub bearing unit of a face gear, which can prevent the slurry from entering the matching part of an inner ring and the sealing component to cause failure; the problem of transmission failure caused by muddy water intrusion at the matched part of the gear surface of the ball cage and the gear surface of the bearing is solved, sealing protection is carried out on the matched end face spline, and the transmission efficiency of the end face spline is ensured.

The purpose of the utility model is accomplished through following technical scheme: the magnetic sealing component for the end face gear hub bearing unit mainly comprises a static framework arranged on an outer ring, a rotating framework arranged on an inner ring and an inner side sealing ring; the rotating framework and the static framework form a sealed cavity facing the outside of the bearing between the outer ring and the inner ring, and the cavity consists of a cavity A and a cavity B; a magnetic material layer is arranged outside the rotating framework and is used for transmitting magnetic induction signals; the periphery of the static framework is coated with rubber, a rubber bulge is arranged on the rubber coated on the periphery and used for being matched with an outer ring to further seal the static framework, a lip A, a lip B and a lip C are also arranged on the rubber coated on the periphery, the lip A is a non-contact lip, the lip B is in interference fit with the rotating framework to divide a sealed cavity between the inner ring and the outer ring into a cavity A and a cavity B, and the lip C is arranged close to the inner side of the bearing and is in interference fit with the rotating framework; the inner side sealing ring is further sealed in interference fit with the magnetic material layer, and the tail end of the inner side sealing ring is used for sealing the matching surface of the bearing end face spline and the ball cage end face spline through the interference fit of the sealing lip and the ball cage head.

The utility model has the advantages that: on the basis that the conventional hub magnetic sealing component bears the bearing raceway seal, the combination of an inner side sealing ring is added. The addition of the inner seal ring further prevents the failure caused by the intrusion of muddy water from the fitting of the inner ring and the seal assembly, as compared with the conventional hub bearing. Meanwhile, due to the addition of the inner sealing ring, the problem of transmission failure caused by muddy water intrusion at the matching position of the gear surface of the ball cage and the gear surface of the bearing is solved, the spline of the matching end surface is protected in a sealing manner, and the transmission efficiency of the end surface spline is ensured.

Drawings

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

Description of reference numerals: the sealing structure comprises a static framework 1, a rotating framework 2, a lip A3, a lip B4, a lip C5, a magnetic material layer 6, a cavity A7, a cavity B8, an inner side sealing ring 9, a rubber bulge 10, a sealing lip 11, an outer ring 12, an inner ring 13, a flange 14 and a ball cage head 15.

Detailed Description

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

example (b): as shown in the attached drawings, the magnetic sealing assembly for the face gear hub bearing unit mainly comprises a static framework 1 arranged on an outer ring 12, a rotating framework 2 arranged on an inner ring 13 and an inner side sealing ring 9; the rotating framework 2 and the static framework 1 form a sealed cavity facing the outside of the bearing between the outer ring 12 and the inner ring 13, and the cavity consists of a cavity A7 and a cavity B8; a magnetic material layer 6 is arranged outside the rotating framework 2 and used for transmitting magnetic induction signals; the periphery of the static framework 1 is coated with rubber, a rubber bulge 10 used for being matched with an outer ring 12 to further seal the static framework 1 is arranged on the rubber coated on the periphery, a lip A3, a lip B4 and a lip C5 are further arranged on the rubber coated on the periphery, the lip A3 is a non-contact lip, the lip B4 is in interference fit with the rotating framework 2 to divide a sealed cavity between the inner ring 13 and the outer ring 12 into a cavity A7 and a cavity B8, and the lip C5 is arranged close to the inner side of the bearing and in interference fit with the rotating framework 2; the inner ring 13 is nested and mounted on a flange plate 14, and the end surface of the flange plate 14 is connected with a ball cage head 15 through a spline; the inner side sealing ring 9 is further sealed in an interference fit mode with the magnetic material layer 6, and the tail end of the inner side sealing ring 9 is used for sealing a matching surface of the bearing end face spline and the ball cage end face spline through the sealing lip 11 and the ball cage head 15 in an interference fit mode.

The utility model discloses a theory of operation: the arrangement of the static framework 1 and the rotating framework 2 ensures that a sealed cavity facing to the outside environment is formed between the outer ring 12 and the inner ring 13, so that the invasion of muddy water can be prevented, the diversion is facilitated, the muddy water directly flowing into the cavity B8 is reduced, and the water in the cavity B8 can be effectively discharged through the action of centrifugal force; meanwhile, the lip A3 is a non-contact lip, a gap is formed between the lip A3 and the rotating framework 2 in a natural state, and a large amount of muddy water is prevented from directly invading the cavity B8 by applying a labyrinth effect; the cavity B8 formed by the lip B4 and the rotating framework 2 can be used as a water storage cavity to play a role in temporarily storing water when a large amount of muddy water is poured under the deep water level working condition; meanwhile, the lip B4 is in interference fit with the rotating framework 2, so that muddy water can be prevented from entering the cavity A7 to pollute grease of the lip, and further the muddy water can be prevented from further invading the bearing raceway; the lip C5 is a grease lip, so that the leakage of lubricating grease in a bearing raceway is prevented, the lubrication failure of the raceway is caused, and the grease is prevented from being mixed with grease added to the areas of the lip B4 and the lip C5 in the cavity A7; the inner sealing ring 9 is in interference fit with the magnetic material layer 6 on the outer side of the rotating framework 2, so that muddy water is prevented from invading the inner ring 13 to cause corrosion, and muddy water is prevented from invading the matching position of the inner ring 13 and the rotating framework 2 to cause matching failure; meanwhile, the seal lip 11 at the tail end of the inner side seal ring 9 is in interference fit with the ball cage head 15, the effective sealing effect is achieved on the matching position after the bearing end face spline and the ball cage end face spline are assembled, external muddy water is prevented from invading the matching position, tooth face matching failure is caused, and the end face tooth transmission effect is influenced.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. A magnetic seal assembly for a hub bearing unit, characterized by: mainly comprises a static framework (1) arranged on an outer ring (12), a rotating framework (2) arranged on an inner ring (13) and an inner side sealing ring (9); the rotating framework (2) and the static framework (1) form a sealed cavity facing the outside of the bearing between the outer ring (12) and the inner ring (13), and the cavity consists of a cavity A (7) and a cavity B (8); a magnetic material layer (6) is arranged outside the rotating framework (2) and is used for transmitting magnetic induction signals; the periphery of the static framework (1) is coated with rubber, a rubber bulge (10) is arranged on the rubber coated on the periphery and used for being matched with an outer ring (12) to further seal the static framework (1), a lip A (3), a lip B (4) and a lip C (5) are further arranged on the rubber coated on the periphery, the lip A (3) is a non-contact lip, the lip B (4) is in interference fit with the rotary framework (2) to divide a sealing cavity between the inner ring and the outer ring (13 and 12) into a cavity A (7) and a cavity B (8), and the lip C (5) is arranged close to the inner side of the bearing and is in interference fit with the rotary framework (2); inboard sealing ring (9) and magnetic material layer (6) interference fit further sealed, inboard sealing ring (9) end is sealed bearing end face spline and the fitting surface of ball cage end face spline through seal lip (11) and ball cage head (15) interference fit.