CN113464564A - High-performance labyrinth low-torque magnetic sealing assembly - Google Patents
High-performance labyrinth low-torque magnetic sealing assembly Download PDFInfo
- Publication number
- CN113464564A CN113464564A CN202110799291.5A CN202110799291A CN113464564A CN 113464564 A CN113464564 A CN 113464564A CN 202110799291 A CN202110799291 A CN 202110799291A CN 113464564 A CN113464564 A CN 113464564A
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- Prior art keywords
- framework
- magnetic
- lip
- labyrinth
- rubber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/82—Arrangements for electrostatic or magnetic action against dust or other particles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a high-performance labyrinth type low-torque magnetic sealing assembly, which relates to the field of hub bearings and comprises a magnetic ring framework and the like, wherein one side of magnetic rubber is coated on the magnetic ring framework, and the other side of the magnetic rubber is tightly attached to a middle framework; the inner sealing ring framework is in interference fit with the outer ring, sealing rubber is coated on the inner sealing ring framework, a grease lip, a main sealing lip and a middle labyrinth lip are arranged on the sealing rubber, and the grease lip is in interference fit with the magnetic ring framework for isolated lubrication; one end of the inner sealing ring framework, which is close to the magnetic rubber, is bent towards the magnetic rubber to form an inner framework bending, an inner top lip is coated outside the inner framework bending, and the inner top lip is tightly attached to the outer ring. The invention adopts two contact lips and adopts a plurality of non-contact labyrinth lips for pre-sealing, thereby not only reducing the friction torque, but also realizing the good sealing of the hub bearing; meanwhile, the magnetic rubber is protected from being damaged by the external environment, and the magnetic rubber can stably generate magnetic signals.
Description
Technical Field
The invention relates to the field of hub bearings, in particular to a high-performance labyrinth type low-torque magnetic sealing assembly.
Background
Referring to fig. 1, the inner magnetic seal commonly used in the third generation wheel hub bearing of the prior art includes three seal lips to seal and provide ABS signal. Because the three sealing lips adopt contact type lips, larger friction is brought by contact, and the energy consumption of the whole vehicle is influenced. In addition, the magnetic rubber is exposed outside, lacks protection, is easily influenced by external environments such as external sand, mud and the like, and loses the function of providing ABS signals.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-performance labyrinth low-torque magnetic sealing assembly, which adopts two contact lips and adopts a plurality of non-contact labyrinth lips for pre-sealing, thereby not only reducing the friction torque, but also realizing good sealing of a hub bearing; meanwhile, the magnetic rubber is protected from being damaged by the external environment, and the magnetic rubber can stably generate magnetic signals.
The purpose of the invention is achieved by the following technical scheme: the high-performance labyrinth low-torque magnetic sealing assembly is arranged on the inner side of a hub bearing, the hub bearing comprises an outer ring, an inner ring, a steel ball and a flange plate, the inner ring is arranged on the flange plate in a clamping groove manner, a raceway is formed between the inner ring and the outer ring and between the flange plate and the outer ring, and the steel ball held by a retainer is arranged in the raceway; the high-performance labyrinth low-torque magnetic sealing assembly comprises a magnetic ring framework, a middle framework and an inner sealing ring framework, wherein the magnetic ring framework is in interference fit with an inner ring, the middle framework is in interference fit with the magnetic ring framework, one side of magnetic rubber is coated on the magnetic ring framework, and the other side of the magnetic rubber is tightly attached to the middle framework; the inner sealing ring framework is in interference fit with the outer ring, sealing rubber is coated on the inner sealing ring framework, a grease lip, a main sealing lip and a middle labyrinth lip are arranged on the sealing rubber, the grease lip is in interference fit with the magnetic ring framework and used for isolating lubricating grease, and the main sealing lip is in interference fit with the middle framework; one end of the inner sealing ring framework, which is close to the magnetic rubber, is bent towards the magnetic rubber to form an inner framework bending, an inner top lip is coated outside the inner framework bending, and the inner top lip is tightly attached to the outer ring.
As a further technical scheme, a magnetic rubber side lip is arranged on one side, close to the bending of the inner framework, of the magnetic rubber, and the magnetic rubber side lip is not in contact with the bending of the inner framework in a natural state.
As a further technical scheme, a labyrinth A is formed between the magnetic rubber side lip and the bent inner framework.
As a further technical scheme, one end of the middle framework, which is close to the inner sealing ring framework, is provided with a middle reverse-folding lip, and the middle reverse-folding lip is not contacted with the inner sealing ring framework in a natural state.
As a further technical scheme, a labyrinth B is formed on the middle reverse folding lip.
As a further technical scheme, the middle labyrinth lip is not contacted with the middle framework in a natural state.
As a further technical scheme, a labyrinth C is formed on the middle labyrinth lip.
The invention has the beneficial effects that:
1. the invasion resistance of the hub bearing unit to external muddy water under various working conditions is met, and high-reliability sealing is achieved;
2. the leakage resistance of the hub bearing unit to the internal grease under various working conditions is met, and the high leakage resistance is achieved;
3. the friction level of the bearing is greatly reduced by adopting a unique 2-lip contact type structural design;
4. the magnetic rubber is protected from being damaged by external foreign matters, and the performance and the stability of the magnetic ring are ensured.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a partially enlarged view of the area a in fig. 2.
FIG. 4 is a schematic view of the invention in mud resist.
Description of reference numerals: the inner top lip comprises an inner top lip 1, an inner framework bend 2, a magnetic rubber side lip 3, a magnetic rubber 4, a magnetic ring framework 5, a middle framework 6, an inner sealing ring framework 7, a middle reverse folding lip 8, a middle labyrinth lip 9, a main sealing lip 10, a grease lip 11, an outer ring 12, an inner ring 13, a steel ball 14, a flange plate 15, a retainer 16, a labyrinth A17, a labyrinth B18 and a labyrinth C19.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in fig. 2 and 3, the high-performance labyrinth low-torque magnetic seal assembly is arranged inside a hub bearing, the hub bearing comprises an outer ring 12, an inner ring 13, a steel ball 14 and a flange plate 15, the inner ring 13 is arranged on the flange plate 15 in a clamping groove manner, a raceway is formed between the inner ring 13 and the outer ring 12 and between the flange plate 15 and the outer ring 12, and the steel ball 14 held by a retainer 16 is arranged in the raceway; the high-performance labyrinth low-torque magnetic sealing assembly comprises a magnetic ring framework 5, a middle framework 6 and an inner sealing ring framework 7, wherein the magnetic ring framework 5 is in interference fit with an inner ring 13, the middle framework 6 is in interference fit with the magnetic ring framework 5, one side of magnetic rubber 4 is coated on the magnetic ring framework 5, and the other side of the magnetic rubber 4 is tightly attached to the middle framework 6; the inner sealing ring framework 7 is in interference fit with the outer ring 12, sealing rubber is coated on the inner sealing ring framework 7, a grease lip 11, a main sealing lip 10 and a middle labyrinth lip 9 are arranged on the sealing rubber, the grease lip 11 is in interference fit with the magnetic ring framework 5 to be used for isolating lubricating grease, and the main sealing lip 10 is in interference fit with the middle framework 6; one end of the inner sealing ring framework 7, which is close to the magnetic rubber 4, is bent towards the magnetic rubber 4 to form an inner framework bending 2, an inner top lip 1 is coated outside the inner framework bending 2, and the inner top lip 1 is tightly attached to the outer ring 12.
Further, a magnetic rubber side lip 3 is arranged on one side, close to the inner framework bend 2, of the magnetic rubber 4, and the magnetic rubber side lip 3 is not in contact with the inner framework bend 2 in a natural state; a labyrinth A17 is formed between the magnetic rubber side lip 3 and the inner framework bend 2.
Furthermore, a middle reverse folding lip 8 is arranged at one end of the middle framework 6 close to the inner sealing ring framework 7, and the middle reverse folding lip 8 is not contacted with the inner sealing ring framework 7 in a natural state; the middle reverse folded lip 8 is formed with a labyrinth B18.
Further, the middle labyrinth lip 9 is not in contact with the middle framework 6 in a natural state; the central labyrinth lip 9 is formed with a labyrinth C19.
The working process of the invention is as follows:
when the automobile runs, the outer ring 12 is fixed with the automobile body and does not rotate, so the outer ring 12, the inner sealing ring framework 7, the inner top lip 1 attached to the inner sealing ring framework 7, the middle labyrinth lip 9, the main sealing lip 10 and the grease lip 11 are all static parts. The wheel drives the inner ring 13 to rotate together, so that the inner ring 13, the middle framework 6, the magnetic ring framework 5, the magnetic rubber 4 attached to the magnetic ring framework 5 and the middle reverse folding lip 8 attached to the middle framework 6 are all rotating parts.
Referring to fig. 4, after external slurry enters from a labyrinth a17 formed between the inner frame bend 2 and the magnetic rubber side lip 3, due to the reflection action of the labyrinth a17, part of the slurry flows out in the reverse direction, the rest of the slurry enters a labyrinth B18 formed by the middle reverse folding lip 8 and is blocked again, the rest of the slurry further enters a labyrinth C19 formed by the middle labyrinth lip 9, and finally the entering small amount of slurry is completely protected by the main seal lip 10, so that the hub bearing is protected from the external slurry.
When external slurry collides with the magnetic sealing elements (the magnetic rubber side lip 3, the magnetic rubber 4 and the magnetic ring framework 5), almost all foreign matters such as slurry and the like impact on the magnetic ring framework 5 without damaging the magnetic rubber 4, so that the magnetic rubber 4 and functions thereof are well protected.
When the hub bearing operates, the internal temperature of the hub bearing is increased, the internal temperature of the hub bearing is far higher than the external temperature, pressure difference is formed due to the internal and external temperature difference, and the internal pressure is higher than the external pressure. Referring to fig. 3, the presence of the grease lip 11 will effectively prevent the leakage of grease.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (7)
1. The utility model provides a low moment magnetic seal subassembly of high performance labyrinth, sets up inboard at the wheel hub bearing, the wheel hub bearing includes outer lane (12), inner circle (13), steel ball (14) and flange dish (15), inner circle (13) draw-in groove formula is installed on flange dish (15), forms the raceway between inner circle (13) and outer lane (12), between flange dish (15) and outer lane (12), and steel ball (14) that keep by holder (16) are put into to the raceway, its characterized in that: the magnetic ring rubber sealing device comprises a magnetic ring framework (5), a middle framework (6) and an inner sealing ring framework (7), wherein the magnetic ring framework (5) is in interference fit with an inner ring (13), the middle framework (6) is in interference fit with the magnetic ring framework (5), one side of magnetic rubber (4) is coated on the magnetic ring framework (5), and the other side of the magnetic rubber (4) is tightly attached to the middle framework (6); the inner sealing ring framework (7) is in interference fit with the outer ring (12), sealing rubber is coated on the inner sealing ring framework (7), a grease lip (11), a main sealing lip (10) and a middle labyrinth lip (9) are arranged on the sealing rubber, the grease lip (11) is in interference fit with the magnetic ring framework (5) and used for isolating lubricating grease, and the main sealing lip (10) is in interference fit with the middle framework (6); one end, close to the magnetic rubber (4), of the inner sealing ring framework (7) is bent towards the magnetic rubber (4) to form an inner framework bending part (2), an inner top lip (1) is coated outside the inner framework bending part (2), and the inner top lip (1) is tightly attached to the outer ring (12).
2. The high performance labyrinth low torque magnetic seal assembly of claim 1, wherein: one side of the magnetic rubber (4) close to the inner framework bending part (2) is provided with a magnetic rubber side lip (3), and the magnetic rubber side lip (3) is not contacted with the inner framework bending part (2) in a natural state.
3. The high performance labyrinth low torque magnetic seal assembly of claim 2, wherein: a labyrinth A (17) is formed between the magnetic rubber side lip (3) and the inner framework bending part (2).
4. The high performance labyrinth low torque magnetic seal assembly of claim 1, wherein: one end of the middle framework (6) close to the inner sealing ring framework (7) is provided with a middle reverse-folding lip (8), and the middle reverse-folding lip (8) is not contacted with the inner sealing ring framework (7) in a natural state.
5. The high performance labyrinth low torque magnetic seal assembly of claim 4, wherein: a labyrinth B (18) is formed on the middle reverse folding lip (8).
6. The high performance labyrinth low torque magnetic seal assembly of claim 1, wherein: the middle labyrinth lip (9) is not contacted with the middle framework (6) in a natural state.
7. The high performance labyrinth low torque magnetic seal assembly of claim 6, wherein: a labyrinth C (19) is formed on the middle labyrinth lip (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799291.5A CN113464564A (en) | 2021-07-15 | 2021-07-15 | High-performance labyrinth low-torque magnetic sealing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799291.5A CN113464564A (en) | 2021-07-15 | 2021-07-15 | High-performance labyrinth low-torque magnetic sealing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113464564A true CN113464564A (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110799291.5A Pending CN113464564A (en) | 2021-07-15 | 2021-07-15 | High-performance labyrinth low-torque magnetic sealing assembly |
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| CN (1) | CN113464564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352640A (en) * | 2021-12-21 | 2022-04-15 | 浙江万向精工有限公司 | High-sealing self-adjusting sealing element and hub bearing thereof |
| CN114352641A (en) * | 2021-12-21 | 2022-04-15 | 浙江万向精工有限公司 | Low-torque self-adjusting sealing assembly and hub bearing thereof |
-
2021
- 2021-07-15 CN CN202110799291.5A patent/CN113464564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352640A (en) * | 2021-12-21 | 2022-04-15 | 浙江万向精工有限公司 | High-sealing self-adjusting sealing element and hub bearing thereof |
| CN114352641A (en) * | 2021-12-21 | 2022-04-15 | 浙江万向精工有限公司 | Low-torque self-adjusting sealing assembly and hub bearing thereof |
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