CN217421897U

CN217421897U - Novel flow guide sealing assembly

Info

Publication number: CN217421897U
Application number: CN202221061652.2U
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: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-09-13
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses a novel water conservancy diversion seal assembly relates to wheel hub bearing field, be in including setting up static skeleton on the outer lane is in with the setting rotation skeleton on the ring flange, the cladding has outsourcing rubber A on the static skeleton, and the cladding has outsourcing rubber B on the rotation skeleton. The beneficial effects of the utility model are that: through structural design, reduce the entry openness, set up the protruding and slope structure of guide muddy water circulation route, inside the muddy water entering seal assembly of reduction, make things convenient for muddy water to discharge. Reduce because muddy water infiltrates the risk that grease pollution and grease excessive that the raceway caused through the space between rotation skeleton and ring flange, improve sealing performance. Simultaneously, set up more complicated passageway through the design, increaseed the degree of difficulty of muddy water invasion, reduced the infiltration risk.

Description

Novel water conservancy diversion seal assembly

Technical Field

The utility model relates to a field of wheel hub bearing, concretely relates to novel water conservancy diversion seal assembly.

Background

In the existing sealing technical scheme of the hub bearing, more lips are adopted to be in contact with a rotating framework, so that larger friction torque is easily caused. Simultaneously, there is muddy water invasion route comparatively simple, and the entry is comparatively open, can take place muddy water invasion raceway inefficacy, grease pollution and the excessive risk of grease after long-term the use, and current structure still lacks the water conservancy diversion setting, guides muddy water and discharges.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a novel water conservancy diversion seal assembly, under the prerequisite of ensureing sealing performance, reduce friction torque. Through structural design labyrinth passageway, increase the degree of difficulty of muddy water invasion, improve sealing performance. Meanwhile, the self-adjustment performance of the sealing performance is improved through design, and the requirements of different use conditions can be met.

The purpose of the utility model is accomplished through following technical scheme: the novel flow guide sealing assembly is arranged on the outer side of a raceway of a hub bearing, the hub bearing comprises an outer ring and a flange plate, the raceway is formed between the outer ring and the flange plate, rollers are arranged on the inner side of the raceway, the flow guide sealing assembly comprises a static framework and a rotating framework, the static framework is arranged on the outer ring, the rotating framework is arranged on the flange plate, an outer packing rubber A is coated on the static framework, and an outer packing rubber B is coated on the rotating framework; a bulge A is arranged on one side, facing the flange, of the outer-coated rubber A, and a slit A is formed between the bulge A and the bolts of the flange and used for preliminarily limiting muddy water from entering; a bulge B is arranged at one end, facing the bulge A, of the outer-coated rubber B, a slit B is formed between the bulge B and the bulge A, a lip B, a lip C and a lip D are sequentially arranged on the outer-coated rubber A below the bulge B, and a cavity A is formed between the lower side of the bulge B and the lip A and used for containing muddy water flowing from the slit B; the lip A is in clearance fit with the rotating framework in a natural state, and a cavity B is formed between the lip A and the lip B and is used for containing muddy water flowing from the cavity A; the lip B is in clearance fit with the rotating framework in a natural state, the lip C is in interference fit with the rotating framework in a natural state, and a cavity C is formed between the lip B and the lip C and is used for containing muddy water flowing from the cavity B; the lip D is in interference fit with the rotating framework in a natural state, a cavity D is formed between the lip C and the lip D, the lip C is used for stopping muddy water from entering the cavity D, and the lip D is used for stopping lubricating grease on the inner side of the roller path from entering the cavity D.

As a further technical scheme, a cavity F is formed between the lower part of the slit A and the bolt and the flange for containing muddy water flowing from the slit A.

As a further technical scheme, the side wall of the bulge A is matched with the side wall of the outer covering rubber B to form a slope surface for guiding muddy water into the cavity F.

As a further technical scheme, a flow guide texture is arranged on the surface of the bulge B on one side facing to the bulge A and is used for guiding muddy water entering the slit B to be discharged.

As a further technical scheme, one end, far away from the protrusion B, of the outer-coated rubber B is provided with a protrusion C, and the protrusion C and the flange are in interference fit sealing.

As a further technical scheme, patterns are arranged at the sealing position of the surface of the protrusion C and the flange plate.

As a further technical scheme, a cavity E is formed between the rotating framework and the flange plate below the protrusion C, and sealant is filled in the cavity E.

As a further technical scheme, grease is filled in the lip C and the lip D in the cavity D for lubrication.

The utility model has the advantages that: through structural design, reduce the entry openness, set up the protruding and slope structure of guide muddy water circulation route, inside the muddy water entering seal assembly of reduction, make things convenient for muddy water to discharge. Reduce because muddy water infiltrates the risk that grease pollution and grease excessive that the raceway caused through the space between rotation skeleton and ring flange, improve sealing performance. Meanwhile, a more complex channel is arranged through design, the difficulty of muddy water invasion is increased, and the water seepage risk is reduced.

Drawings

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

Fig. 2 is a partially enlarged schematic view of a region a in fig. 1.

Description of the reference numerals: the structure comprises a static framework 1, a rotating framework 2, an outer covering rubber A3, an outer covering rubber B4, a lip A5, a lip B6, a lip C7, a lip D8, a cavity A9, a cavity B10, a cavity C11, a cavity D12, a cavity E13, a protrusion A14, a protrusion B15, a protrusion C16, a pattern 17, an outer ring 18, a flange 19, a roller 20, a roller 21, a bolt 22, a slit A23, a slit B24, a cavity F25, a slope surface 26 and a flow guide texture 27.

Detailed Description

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

example (b): as shown in fig. 1 and 2, the novel diversion seal assembly is arranged outside a raceway 20 of a hub bearing, the hub bearing comprises an outer ring 18 and a flange plate 19, the raceway 20 is formed between the outer ring 18 and the flange plate 19, a roller 21 is arranged inside the raceway 20, the diversion seal assembly comprises a static skeleton 1 arranged on the outer ring 18 and a rotating skeleton 2 arranged on the flange plate 19, the static skeleton 1 is coated with an outer-coated rubber a3, and the rotating skeleton 2 is coated with an outer-coated rubber B4; the side, facing the flange plate 19, of the wrapping rubber A3 is provided with a protrusion A14, and a slit A23 is formed between the protrusion A14 and the bolt 22 of the flange plate 19 and is used for preliminarily limiting muddy water from entering; a protrusion B15 is arranged at one end, facing the protrusion A14, of the wrapping rubber B4, a slit B24 is formed between the protrusion B15 and the protrusion A14, a lip A5, a lip B6, a lip C7 and a lip D8 are sequentially arranged on the wrapping rubber A3 below the protrusion B15, and a cavity A9 is formed between the lower portion of the protrusion B15 and the lip A5 and used for containing muddy water flowing from the slit B24; the lip A5 is in clearance fit with the rotating skeleton 2 in a natural state, and a cavity B10 is formed between the lip A5 and the lip B6 and used for containing muddy water flowing from the cavity A9; lip B6 is in clearance fit with the rotating skeleton 2 in a natural state, lip C7 is in interference fit with the rotating skeleton 2 in a natural state, and a cavity C11 is formed between lip B6 and lip C7 and used for containing muddy water flowing from the cavity B10; the lip D8 is in interference fit with the rotating framework 2 in a natural state, a cavity D12 is formed between the lip C7 and the lip D8, the lip C7 is used for stopping muddy water from entering the cavity D12, and the lip D8 is used for stopping lubricating grease on the inner side of the raceway 20 from entering the cavity D12.

Further, as shown in fig. 2, a cavity F25 is formed between the lower part of the slit a23 and the bolt 22 and the flange 19, and is used for containing muddy water which flows in from the slit a 23. The side wall of the bulge A14 and the side wall of the outer covering rubber B4 are matched to form a slope surface 26 for guiding muddy water to enter the cavity F25, so that the muddy water is prevented from entering the inside of the sealing assembly (the slit B24), the muddy water is convenient to discharge, and a pre-seal is formed.

Further, the surface of the projection B15 on the side facing the projection a14 is provided with a flow guiding texture 27 for guiding the muddy water entering the slit B24 to be discharged. One end of the outer rubber B4, which is far away from the protrusion B15, is provided with a protrusion C16, and the protrusion C16 is in interference fit sealing with the flange 19. Preferably, the surface of the protrusion C16 is provided with a pattern 28 at the sealing position with the flange 19, so as to ensure the assembly to be static and stable when in interference fit with the flange 19.

Preferably, a cavity E13 is formed between the rotating framework 2 below the protrusion C16 and the flange 19, and a sealing agent is filled in the cavity E13 to play a sealing role, so that water or impurities are effectively prevented from entering the interior of the hub bearing, and the sealing performance is further optimized. Preferably, the lip C7 and the lip D8 in the cavity D12 are filled with grease for lubrication.

The utility model discloses a working process: when the hub bearing is impacted by muddy water, the muddy water firstly passes through the slit A23, most of the muddy water enters the cavity F25 under the action of the slope surface 26, and the muddy water in the cavity F25 can be discharged along the slope surface 26 at any time; a small amount of muddy water enters the cavity A9 through the slit B24, the cavity A9 can play a transient water storage role when a large amount of muddy water is poured in, and meanwhile, the muddy water in the cavity A9 can be effectively discharged in time through the centrifugal force; the muddy water remained in the slit B24 is discharged under the guidance of the flow guide texture 27; the lip A5 is not contacted with the rotating skeleton 2 in a natural state to form a cavity A9, and the cavity A9 is used as a first water storage cavity and can play a role in temporarily storing water when a large amount of muddy water is poured under the working condition of a deep water level; the lip B6 is not in contact with the rotating skeleton 2 in a natural state, a cavity B10 is formed by the lip B5 and the cavity B10 is used as a second water storage cavity, and the effect of further buffering under the working condition of deep water level and under the condition that the cavity A9 is overloaded can be achieved; the lip C7 is in contact with the rotating framework 2 in a natural state, a cavity C11 is formed by the lip C6 and the lip C7, and the lip C7 serves as a first lip line for preventing muddy water from splashing into the bearing, so that the muddy water is further prevented from invading; the lip D8 is an oil blocking lip, which plays a role in preventing lubricating grease in the raceway 20 from leaking and avoids the effect of mixing the lubricating grease with the areas of the inner lip C7 and the lip D8 of the cavity D12.

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. The utility model provides a novel water conservancy diversion seal assembly, sets up in the raceway (20) outside of hub bearing, hub bearing includes outer lane (18) and flange dish (19), forms raceway (20) between outer lane (18) and flange dish (19), and roller (21), its characterized in that are put into to raceway (20) inboard: the rubber sealing ring comprises a static framework (1) arranged on the outer ring (18) and a rotating framework (2) arranged on the flange plate (19), wherein the static framework (1) is coated with an outer-coated rubber A (3), and the rotating framework (2) is coated with an outer-coated rubber B (4); a bulge A (14) is arranged on one side, facing the flange plate (19), of the outer-coated rubber A (3), and a slit A (23) is formed between the bulge A (14) and a bolt (22) of the flange plate (19) and used for preliminarily limiting muddy water from entering; the outer-coated rubber B (4) is provided with a bulge B (15) towards one end of the bulge A (14), a slit B (24) is formed between the bulge B (15) and the bulge A (14), a lip A (5), a lip B (6), a lip C (7) and a lip D (8) are sequentially arranged on the outer-coated rubber A (3) below the bulge B (15), and a cavity A (9) is formed between the lower part of the bulge B (15) and the lip A (5) and used for containing muddy water flowing from the slit B (24); the lip A (5) is in clearance fit with the rotating framework (2) in a natural state, and a cavity B (10) is formed between the lip A (5) and the lip B (6) and is used for containing muddy water which is gushed from the cavity A (9); the lip B (6) is in clearance fit with the rotating framework (2) in a natural state, the lip C (7) is in interference fit with the rotating framework (2) in the natural state, and a cavity C (11) is formed between the lip B (6) and the lip C (7) and is used for containing muddy water flowing from the cavity B (10); the lip D (8) is in interference fit with the rotating framework (2) in a natural state, a cavity D (12) is formed between the lip C (7) and the lip D (8), the lip C (7) is used for stopping muddy water from entering the cavity D (12), and the lip D (8) is used for stopping lubricating grease on the inner side of the roller path (20) from entering the cavity D (12).

2. The novel flow directing seal assembly of claim 1, wherein: and a cavity F (25) is formed between the lower part of the slit A (23) and the bolt (22) and the flange plate (19) and is used for containing muddy water flowing from the slit A (23).

3. The novel flow directing seal assembly of claim 2, wherein: the side wall of the bulge A (14) and the side wall of the outer covering rubber B (4) are matched to form a slope surface (26) for guiding muddy water into the cavity F (25).

4. The novel flow directing seal assembly of claim 1, wherein: the surface of the bulge B (15) facing to the bulge A (14) is provided with a flow guiding texture (27) for guiding the muddy water entering the slit B (24) to be discharged.

5. The novel flow directing seal assembly of claim 1, wherein: and one end of the outer-coated rubber B (4) far away from the bulge B (15) is provided with a bulge C (16), and the bulge C (16) is in interference fit with the flange plate (19) for sealing.

6. The novel flow directing seal assembly of claim 5, wherein: and patterns (28) are arranged at the sealing position of the surface of the bulge C (16) and the flange plate (19).

7. The novel flow directing seal assembly of claim 5 or 6, wherein: and a cavity E (13) is formed between the rotating framework (2) below the protrusion C (16) and the flange plate (19), and sealant is filled in the cavity E (13).

8. The novel flow directing seal assembly of claim 1, wherein: and grease is filled in the lip C (7) and the lip D (8) in the cavity D (12) for lubrication.