CN112797080A - Magnetic sealing assembly - Google Patents

Magnetic sealing assembly Download PDF

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Publication number
CN112797080A
CN112797080A CN202110150451.3A CN202110150451A CN112797080A CN 112797080 A CN112797080 A CN 112797080A CN 202110150451 A CN202110150451 A CN 202110150451A CN 112797080 A CN112797080 A CN 112797080A
Authority
CN
China
Prior art keywords
framework
lip
protrusion
cavity
rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110150451.3A
Other languages
Chinese (zh)
Inventor
汪峰
王建华
高柯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wanxiang Group Corp
Zhejiang Wanxiang Precision Industry Co Ltd
Original Assignee
Wanxiang Group Corp
Zhejiang Wanxiang Precision Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wanxiang Group Corp, Zhejiang Wanxiang Precision Industry Co Ltd filed Critical Wanxiang Group Corp
Priority to CN202110150451.3A priority Critical patent/CN112797080A/en
Publication of CN112797080A publication Critical patent/CN112797080A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • 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
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention discloses a magnetic sealing assembly which mainly comprises a framework A and the like, wherein the opening part of an outer ring is connected with the framework A, the framework A is wrapped with an outer wrapping rubber A, the outer wrapping rubber A is provided with a protrusion B, the protrusion B is in contact with the outer diameter edge of the outer ring in a natural state, the opening part of an inner ring is in interference fit with the framework B in a press-fitting mode to form pre-sealing, the framework B is covered with an outer wrapping rubber B, the outer wrapping rubber B is provided with a lip A, a lip B, a lip C and a protrusion A, the protrusion A is in contact with the inner diameter opening part of the inner ring in a natural state, a narrow channel is formed between the lip A and the framework A, a cavity A is formed between the inner side of the lip A and the framework A, the lip B and the lip C are in contact. On the premise of ensuring the wheel speed signal and the sealing performance, the invention adopts the lip-less design with only two contact lips, thereby reducing the number of parts and reducing the friction torque.

Description

Magnetic sealing assembly
Technical Field
The invention relates to the field of hub bearings, in particular to a magnetic seal assembly.
Background
The second-generation hub bearing is an automobile part for bearing weight for the rotation of an outer ring and providing accurate guide for the rotation of a hub; the magnetic ring is a component which provides an alternating magnetic field to provide a wheel speed signal; the sealing assembly is a part for preventing external muddy water from entering and internal grease from leaking.
In the prior art, the magnetic ring 18 is an independent part, is mounted on the outer ring 13 through interference fit of the framework and the outer ring 13, and provides a wheel speed signal for the sensor along with the rotation of the outer ring 13; the inner skeleton of the original sealing element 17 is arranged on the outer ring 13 of the hub, the outer skeleton is arranged on the inner ring 14, and the inner ring 14 is a static part. The contact between the rubber lip on the original seal 17 and the frame forms the sealing capability. In the prior art, the magnetic ring 18 and the original sealing element 17 are two groups of different parts and need to be installed independently; and more lips are in contact with the rotating framework, so that larger friction torque is easily caused. Meanwhile, the risk that muddy water permeates into the raceway through a gap between the rotating framework and the static framework in the rotating process, so that the muddy water enters, the raceway fails, and the grease is polluted and spilled out is caused. In a word, the prior art scheme has the defects of more parts, more complex installation, more contact between the lip and the rotating framework, larger friction torque and the like.
Disclosure of Invention
The present invention is directed to overcoming the deficiencies of the prior art and providing a magnetic seal assembly.
The purpose of the invention is achieved by the following technical scheme: the magnetic sealing component mainly comprises a framework A, a framework B, a lip A, a lip B, a lip C, a cavity A, a cavity B, a cavity C, an outer rubber coating A, a protrusion B, a glue filling area, an outer ring, an inner ring, a retainer and rolling elements, wherein the rolling elements retained by the retainer are arranged on a raceway between the outer ring and the inner ring to form a bearing, a cavity and a gap are formed outside the raceway, the framework A is connected with the opening of the outer ring, the outer rubber coating A is wrapped on the framework A and provided with the protrusion B, the protrusion B is in contact with the outer diameter edge of the outer ring in a natural state, the glue filling area is arranged at the chamfer of the inner diameters of the framework A and the outer ring, anaerobic glue is filled in the glue filling area, the opening of the inner ring is in interference fit with the framework B to press fit to form pre-sealing, the framework B is covered with the outer, the bulge A is in contact with an inner ring inner diameter opening in a natural state, a narrow channel is formed between the lip A and the framework A, a cavity A is formed between the inner side of the lip A and the framework A, the lip B and the lip C are in contact sealing with the framework A to form a cavity B, and a cavity C is formed between the inner side of the lip C and the framework A.
And the framework A and the framework B mutually form a labyrinth type sealing channel.
The outer rubber is magnetic rubber.
The invention has the beneficial effects that: on the premise of ensuring the wheel speed signal and the sealing performance, the invention adopts the lip-less design with only two contact lips, thereby reducing the number of parts and reducing the friction torque; by means of the novel labyrinth structure design, the length of a muddy water invasion path is increased, a labyrinth effect is generated, the muddy water invasion difficulty is further increased, the risks of oil pollution and oil overflow caused by muddy water permeating into the raceway are reduced, and the sealing performance is improved; the sealing performance and the assembling tightness are improved by arranging the bulges, and the purposes of low torque, less lip and high sealing performance are achieved; the cavity can improve the sealing performance and can also improve the utilization rate of grease as a grease buffer area.
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 a portion a in fig. 2.
Description of reference numerals: skeleton A1, skeleton B2, lip A3, lip B4, lip C5, cavity A6, cavity B7, cavity C8, outer coating rubber A9, protrusion A10, protrusion B11, glue filling area 12, outer ring 13, inner ring 14, retainer 15, rolling body 16, original sealing element 17, magnetic ring 18 and outer coating rubber B19.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached drawings, the magnetic sealing assembly mainly comprises a framework A1, a framework B2, a lip A3, a lip B4, a lip C5, a cavity A6, a cavity B7, a cavity C8, an outer wrapping rubber A9, a protrusion A10, a protrusion B11, a glue filling area 12, an outer ring 13, an inner ring 14, a retainer 15 and rolling bodies 16, wherein the rolling bodies 16 retained by the retainer 15 are mounted on a raceway between the outer ring 13 and the inner ring 14 to form a bearing, the cavity and a gap are formed on the outer side of the raceway, the opening of the outer ring 13 is connected with the framework A1, the framework A1 is wrapped with the outer wrapping rubber A9, and the outer wrapping rubber 9 is magnetic rubber. The outer rubber A9 is provided with a protrusion B11, the protrusion B11 is in contact with the outer diameter edge of the outer ring 13 in a natural state, muddy water is prevented from permeating into a raceway along a contact gap between the framework A1 and the outer ring 13 in the using process, a glue filling area 12 is arranged at the inner diameter chamfer of the framework A1 and the outer ring 13, anaerobic glue is filled in the glue filling area 12 to further improve the contact tightness between the framework A1 and the outer ring 13, muddy water permeation is avoided, the opening of the inner ring 14 is in interference fit with the press-fitting framework B2 to form pre-sealing, muddy water dust is prevented from entering the raceway, and a labyrinth sealing channel is formed between the framework A1 and the. The skeleton B2 is covered with an outer covering rubber B19, the outer covering rubber B19 is provided with a lip A3, a lip B4, a lip C5 and a protrusion A10, the protrusion A10 is naturally contacted with the inner diameter opening of the inner ring 14 to prevent muddy water from permeating into a raceway along a contact gap between the skeleton B2 and the inner ring 14 in the use process, a narrow channel is formed between the lip A3 and the skeleton A1, a cavity A6 is formed between the inner side of the lip A3 and the skeleton A1 to prevent a large amount of muddy water from entering and leading the invaded muddy water to enter the cavity A6 and be discharged in time, the cavity A6 can perform a short-time water storage function when a large amount of muddy water is gushed to facilitate the timely discharge of the muddy water through the action of gravity, the lip B9 and the lip C5 are in contact sealing with the skeleton A1 to form a cavity B7 to further prevent the invasion of the muddy water, the lip C5 prevents a large amount of the muddy water from leaking in the raceway, improves the sealing performance of lubricating oil, and the cavity 8 is used as a, the grease can be temporarily stored when the grease is separated out from the raceway, so that the grease can conveniently enter the raceway again for supplement.
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 (3)

1. A magnetic seal assembly, characterized by: mainly comprises a framework A (1), a framework B (2), a lip A (3), a lip B (4), a lip C (5), a cavity A (6), a cavity B (7), a cavity C (8), an outer wrapping rubber A (9), a protrusion A (10), a protrusion B (11), a glue filling area (12), an outer ring (13), an inner ring (14), a retainer (15) and a rolling body (16), wherein a raceway between the outer ring (13) and the inner ring (14) is provided with the rolling body (16) kept by the retainer (15) to form a bearing, a cavity and a gap are formed outside the raceway, the opening of the outer ring (13) is connected with the framework A (1), the outer wrapping rubber A (9) is wrapped on the framework A (1), the protrusion B (11) is arranged on the outer wrapping rubber A (9), the protrusion B (11) is in natural state and is in contact with the outer diameter edge of the outer ring (13), the glue filling area (12) is arranged at the inner diameter chamfer of the, anaerobic glue is filled in a glue filling area (12), an inner ring (14) opening interference fit press-fitting framework B (2) forms pre-sealing, an outer packing rubber B (19) is coated on the framework B (2), a lip A (3) is arranged on the outer packing rubber B (19), a lip B (4), a lip C (5) and a protrusion A (10) are arranged on the outer packing rubber B (2), the protrusion A (10) is in contact with an inner ring (14) inner diameter opening under a natural state, a narrow channel is formed between the lip A (3) and the framework A (1), a cavity A (6) is formed between the inner side of the lip A (3) and the framework A (1), the lip B (4), the lip C (5) is in contact sealing with the framework A (1) and forms a cavity B (7), and a cavity C (8) is formed between the inner side of the lip C (5) and the framework A (.
2. The magnetic seal assembly of claim 1, wherein: the framework A (1) and the framework B (2) mutually form a labyrinth type sealing channel.
3. The magnetic seal assembly of claim 1, wherein: the outer rubber (9) is magnetic rubber.
CN202110150451.3A 2021-02-03 2021-02-03 Magnetic sealing assembly Pending CN112797080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110150451.3A CN112797080A (en) 2021-02-03 2021-02-03 Magnetic sealing assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110150451.3A CN112797080A (en) 2021-02-03 2021-02-03 Magnetic sealing assembly

Publications (1)

Publication Number Publication Date
CN112797080A true CN112797080A (en) 2021-05-14

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CN202110150451.3A Pending CN112797080A (en) 2021-02-03 2021-02-03 Magnetic sealing assembly

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2058539A2 (en) * 2007-11-09 2009-05-13 SNR Roulements Sealing device, in particular with a built-in magnetic encoder, comprising a magnetic sealing lip
JP2016186319A (en) * 2015-03-27 2016-10-27 Ntn株式会社 Sealing device and wheel bearing device having the same
JP2017106514A (en) * 2015-12-08 2017-06-15 内山工業株式会社 Seal device
CN107923540A (en) * 2015-09-01 2018-04-17 Nok株式会社 Sealing device
CN109689396A (en) * 2016-09-12 2019-04-26 Ntn株式会社 Bearing apparatus for wheel
CN110462237A (en) * 2017-03-24 2019-11-15 Ntn株式会社 Bearing apparatus for wheel
CN210290504U (en) * 2018-07-30 2020-04-10 日本精工株式会社 Rolling bearing unit for wheel support
US20200130411A1 (en) * 2018-10-24 2020-04-30 Aktiebolaget Skf Sealing device for a wheel hub unit
CN111271381A (en) * 2020-02-19 2020-06-12 浙江万向精工有限公司 Sealing assembly for hub bearing unit
CN211501360U (en) * 2019-11-14 2020-09-15 浙江万向精工有限公司 High leakproofness magnetism seal structure
CN112228459A (en) * 2020-09-28 2021-01-15 浙江万向精工有限公司 Wheel hub bearing unit seal assembly
CN215567359U (en) * 2021-02-03 2022-01-18 浙江万向精工有限公司 Magnetic seal assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2058539A2 (en) * 2007-11-09 2009-05-13 SNR Roulements Sealing device, in particular with a built-in magnetic encoder, comprising a magnetic sealing lip
JP2016186319A (en) * 2015-03-27 2016-10-27 Ntn株式会社 Sealing device and wheel bearing device having the same
CN107923540A (en) * 2015-09-01 2018-04-17 Nok株式会社 Sealing device
JP2017106514A (en) * 2015-12-08 2017-06-15 内山工業株式会社 Seal device
CN109689396A (en) * 2016-09-12 2019-04-26 Ntn株式会社 Bearing apparatus for wheel
CN110462237A (en) * 2017-03-24 2019-11-15 Ntn株式会社 Bearing apparatus for wheel
CN210290504U (en) * 2018-07-30 2020-04-10 日本精工株式会社 Rolling bearing unit for wheel support
US20200130411A1 (en) * 2018-10-24 2020-04-30 Aktiebolaget Skf Sealing device for a wheel hub unit
CN211501360U (en) * 2019-11-14 2020-09-15 浙江万向精工有限公司 High leakproofness magnetism seal structure
CN111271381A (en) * 2020-02-19 2020-06-12 浙江万向精工有限公司 Sealing assembly for hub bearing unit
CN112228459A (en) * 2020-09-28 2021-01-15 浙江万向精工有限公司 Wheel hub bearing unit seal assembly
CN215567359U (en) * 2021-02-03 2022-01-18 浙江万向精工有限公司 Magnetic seal assembly

Cited By (1)

* Cited by examiner, † Cited by third party
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

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