CN113847349B - Labyrinth seal ring at outer side of hub bearing - Google Patents
Labyrinth seal ring at outer side of hub bearing Download PDFInfo
- Publication number
- CN113847349B CN113847349B CN202110937560.XA CN202110937560A CN113847349B CN 113847349 B CN113847349 B CN 113847349B CN 202110937560 A CN202110937560 A CN 202110937560A CN 113847349 B CN113847349 B CN 113847349B
- Authority
- CN
- China
- Prior art keywords
- annular cover
- lip
- annular
- hub bearing
- labyrinth seal
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F16C33/80—Labyrinth sealings
-
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides a labyrinth seal ring at the outer side of a hub bearing, which belongs to the technical field of bearings and comprises a first annular cover rotating during use, a second annular cover fixed during use, a first lip, a second lip and a third lip, wherein the first lip and the second lip are arranged on the first annular cover, extend from the first annular cover to the inner surface of the second annular cover opposite to the first annular cover to form zero clearance fit and interference fit respectively, and the third lip is arranged on the second annular cover, and extends from the second annular cover to the inner surface of the first annular cover opposite to the second annular cover to form zero clearance fit. The invention provides a non-concentrated labyrinth type three-lip sealing ring, which realizes a superior sealing effect by a small number of sealing lips and an atypical labyrinth type sealing structure, and is particularly suitable for the third-generation hub bearing with low torque and low load.
Description
Technical Field
The invention relates to the technical field of bearing sealing, in particular to an outer labyrinth ring seal of a third-generation hub bearing.
Background
Fig. 1 shows a structure of an outer sealing ring of a conventional third-generation hub bearing, which uses a three-lip sealing structure, but mainly has the following problems: in order to ensure the sealing performance, the sealing lip is designed to be too large, so that the moment of the sealing monomer is very large, and a certain obstacle is caused to the normal operation of the third-generation hub bearing.
Based on this, the present application is presented.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the labyrinth seal ring at the outer side of the hub bearing with low moment, solves the problems that the moment of a labyrinth seal structure is overlarge and the operation of the bearing is influenced in the prior art, improves the sealing performance and ensures the normal operation of the bearing.
In order to achieve the above purpose, the specific structure of the labyrinth seal ring at the outer side of the hub bearing is as follows: the bearing comprises a first annular cover rotating in use, a second annular cover fixed in use, and a first lip, a second lip and a third lip, wherein the first lip and the second lip are arranged on the first annular cover, extend from the first annular cover to the inner surface of the second annular cover opposite to the first lip to form zero clearance fit and interference fit respectively, the third lip is arranged on the second annular cover, extend from the second annular cover to the inner surface of the first annular cover opposite to the second annular cover to form zero clearance fit, and form labyrinth seal under the staggered design through the fit of the first lip and the second lip and the fit of the third lip and the first annular cover, and the first lip and the third lip can form dynamic seal when the bearing operates, so that the related requirements of the interference fit between the lips and the annular cover are reduced, and low-torque seal is realized.
The invention is further provided as follows: the first and second lips are on the same side, the third lip is on the other side and the side on which the first and second lips are located is closer to the interior of the bearing in use. Different from traditional labyrinth seal structure that distributes more densely and more in quantity, this section structural design has utilized both sides end simultaneous seal structure one to be close to the seal structure design of arbitrary side, combines the third generation bearing operation process and the enhancement effect of the interference fit of pressure to the second lip that produces at the both sides end of annular cover, separates the gas circulation between the both sides, also can effectively maintain the clearance fit relation and the dynamic seal that first lip, third lip formed under the pressure effect, ensures sealed effect.
The invention is further provided as follows: the bottom end of the first annular cover is arranged at an interval opposite to the second annular cover, and the first lip is arranged in the interval. This configuration facilitates zero clearance fit of the first lip with the second annular shroud and more readily achieves a fit relationship that also maintains zero clearance fit or only makes slight contact under pressure.
The invention is further provided as follows: the bottom of the first annular cover is spaced parallel to the lower middle portion or bottom of the second annular cover and the second lip is disposed in the space. The structural design can enable the second lip edge to be close to the first lip edge, and effectively isolate foreign matters from entering between the first lip edge and the second annular cover so as to improve the sealing effect of the first lip edge and the second annular cover.
The invention is further provided as follows: the upper outer side of the first annular cover is inwards concave to form a horizontal inner groove for the insertion and fixation of the coaxial bearing inner ring, the inner groove corresponds to a protruding structure on the inner side of the first annular cover, the upper surface of the protruding structure is oppositely arranged with the top parallel interval of the second annular cover, and the third lip is arranged in the interval.
Through the inner groove or the protruding structure, a rigid protruding structure is formed between the first annular cover and the second annular cover, so that resistance of air flow or foreign matters entering a gap between the first annular cover and the second annular cover is increased, and sealing effect is improved; meanwhile, the third lip is in clearance-free fit with the protruding structure, the structure is skillfully utilized, the sealing gasket where the third lip is located is separated from the first lip and the second lip by physical separation, the mutual influence is avoided, the stability of the clearance-free fit of the third lip and the second annular cover can be improved, and the sealing effect is further improved.
The invention is further provided as follows: the lower half part of the first annular cover below the protruding structure is inclined towards one side where the second annular cover is located, and meanwhile the bottom of the bottom end of the lower half part of the first annular cover is reversely inclined to form a structure parallel or inclined to the middle part of the second annular cover, and the sealing main bodies forming the first lip and the second lip are embedded in an included angle gap between the inclined lower half part of the first annular cover and the lower surface of the protruding structure.
As described above, the inclined portion can form an angle gap for accommodating the seal body, increase the volume of the seal body, ensure the stability of the structure of the seal body, and maintain the stability of the first lip and the second lip, thereby ensuring the stability of the seal structure. In addition, the uneven surface of the second annular cover is used for influencing the air flow in the gap between the first annular cover and the second annular cover when the bearing is in operation, so that the probability of external foreign matters entering the inner gap is reduced.
The invention is further provided as follows: the semi-ring section of the second annular cover is C-shaped, the middle to the bottom of the semi-ring section is an arc line with smooth transition, and the top of the semi-ring section is two or more sections of lines with edges and corners, so that the semi-ring is convenient to process and is also convenient to adapt to the first annular cover which is bent and uneven.
The invention is further provided as follows: the top of the first annular cover extends towards the upper part of the top of the second annular cover, and a shielding part capable of shielding the end part of the top of the second annular cover is arranged. By the shielding, the third lip can be protected from external influence, an inlet formed between the first annular cover and the second annular cover is reduced, and influence of external environment on the sealing ring is reduced.
To maintain zero clearance fit stability, the invention is further configured as follows: the third lip projects obliquely downward from the top of the second annular shroud into the first annular shroud.
In order to improve the sealing effect, the invention further provides the following steps: the gap between the first annular cover and the second annular cover where the third lip is located is smaller than that of the first lip and the second lip.
The beneficial effects of the invention are as follows:
1. the labyrinth seal structure is further complicated through the structural design, so that the impact of muddy water on the seal lip is reduced, and the muddy water performance is improved.
2. According to the invention, through complicating the sealing structure, the number of the sealing lips which need interference fit is reduced, and the interference needed by the sealing lips is correspondingly reduced, so that the pressure at the sealing lips is reduced, and the moment is reduced.
Drawings
FIG. 1 is a prior art schematic diagram of an embodiment of the present invention.
FIG. 2 is a schematic overall view of an embodiment of the present invention.
FIG. 3 is a schematic view of a first annular cover according to an embodiment of the present invention.
Fig. 4 is an enlarged partial schematic view of a first lip according to an embodiment of the present invention.
Fig. 5 is an enlarged partial schematic view of a second lip according to an embodiment of the present invention.
Fig. 6 is an enlarged partial schematic view of a third lip according to an embodiment of the present invention.
Reference numerals: 1. a first annular cover; 2. a second annular cover; 3. a first seal body; 4. a second seal body; 31. a first lip; 32. a second lip; 41. a third lip; 11. an inner groove; 11', a projection structure; 12. a shielding part; 13. an inclined portion; 14. an included angle gap; 15. a first annular shroud bottom; 21. a second annular shroud top; 22. the middle part of the second annular cover; 23. a second annular shroud bottom; 24. an arc-shaped connecting part.
Detailed Description
The invention provides a labyrinth seal ring at the outer side of a hub bearing, which is provided with two annular covers, two lips which are in zero clearance fit and one lip which are in interference fit and used for sealing.
The invention is further illustrated below with reference to examples.
Embodiment 1 this embodiment provides an outboard labyrinth seal for a three-generation hub bearing comprising a first annular shroud 1 which rotates in use and a second annular shroud 2 which is fixed in use, the first annular shroud 1 being generally fixed to the outer race of the three-generation hub bearing and the second annular shroud 2 being generally fixed to the inner race of the three-generation hub bearing. The first annular cover 1 and the second annular cover 2 are arranged in a clearance fit way, a first sealing body with a first lip 31 and a second lip 32 and a first sealing body with a third lip 41 are arranged in the clearance between the first annular cover 1 and the second annular cover, the first sealing body is attached to the first annular cover 1, the first lip 31 and the second lip 32 are in zero clearance fit and interference fit with the inner surface of the second annular cover 2 opposite to the first lip, and the first sealing body is assisted in zero clearance fit with the second annular cover 2, and the third lip 41 is in zero clearance fit with the inner surface of the first annular cover 1 opposite to the first lip, so that a labyrinth seal is formed.
Referring to fig. 3, in this embodiment, the first annular cover 1 has a complex structure, and a half-ring section is a curved multi-section line, specifically, a horizontal inner groove 11 is concavely formed from the outer side of the first annular cover 1 to the inner side (in this embodiment, a side of a gap between the first annular cover 1 and the second annular cover 2 is taken as an inner side), and the inner groove 11 can be used for inserting and fixing the inner ring of the third-generation hub bearing. The inner recess 11 corresponds to a projection 11 'on the inner side of the first annular cap 1, the upper and lower surfaces of the projection 11' being arranged close to the horizontal aspect shown in fig. 2.
The lower half of the first annular cover 1 below the protruding structure 11 'is inclined to the side where the second annular cover 2 is located to form an inclined portion 13, and is located at the bottom end of the lower half of the first annular cover 1, that is, the bottom of the first annular cover 1 is reversely inclined at a certain angle to form a structure parallel to or inclined to the middle of the second annular cover 2, so that the first sealing body 3 forming the first lip 31 and the second lip 32 is embedded in an included angle gap 14 between the inclined lower half of the first annular cover 1 and the lower surface of the protruding structure 11'. The lower half of the first annular cap 1 is inclined at an angle of less than 35 ° with respect to the lower surface of the projecting structure 11'. The structure can form an included angle gap 14 with enough space, and a relatively stable included angle relation is formed between the lower half part and the protruding structure 11', so that the stability of the structure of the first annular cover 1 is ensured.
The structure of the second annular cover 2 is relatively simple, the semi-ring section of the second annular cover 2 is C-shaped, the middle to bottom of the second annular cover is an arc line in smooth transition, and the top of the second annular cover is two sections with edges and corners. As shown in fig. 2, the top of the second annular cover 2 is spaced apart in parallel with the upper surface of the projecting structure 11' of the first annular cover 1, and the third lip 41 projects obliquely downward from the top of the second annular cover 2 into the first annular cover 1. The second sealing body 4 of the third lip 41 is attached to the top of the second annular cap 2. Meanwhile, a shielding portion 12 for shielding the end of the top of the second annular cover 2 extends from the top of the first annular cover 1 to the upper side of the top of the second annular cover 2. The protruding portion of the protruding structure 11' is opposite to the middle of the second annular cover 2 and the width of the gap is relatively uniform.
As shown in fig. 2 and 4, under the inclined portion 13 of the first annular cover 1, the bottom of the first annular cover is spaced apart in parallel with the bottom of the second annular cover 2, and the second lip 32 is provided in the space obliquely upward from the bottom of the first annular cover 1. The bottom end of the first annular shroud 1 is disposed opposite the bottom of the second annular shroud 2 at a spacing in which the first lip 31 is disposed obliquely downward. Thereby forming a non-centralized labyrinth seal structure with the first lip 31, the second lip 32 on the same side and the third lip 41 on the other side. Also, in the present embodiment, the side of the first lip 31, the second lip 32 is closer to the inside of the bearing when in use. In this structure, the middle part of the second annular cover 2 is arranged vertically and the bottom of the second annular cover 2 is arranged horizontally, and the middle part of the second annular cover 2 and the bottom of the second annular cover 2 are connected in a transitional manner by an arc-shaped connecting part 24.
And, in the present embodiment, since the first lip 31 is inclined downward, the second lip 32 is inclined upward, and both are provided at the bottom end of the first annular cover 1, an angle of approximately 180 ° is formed between the first lip 31 and the second lip 32. This structure is convenient to process, also can make first lip 31 and second lip 32 mutually supporting, and when first annular cover 1 and second annular cover 2 pressurized were close, first lip 31 or can form little interference fit with second annular cover 2 bottom, improve sealed effect to satisfy actual sealing demand.
Example 2 this example differs from example 1 in that: the gap between the first annular cover 1 and the second annular cover 2 where the third lip 41 is located is smaller than the gap between the first annular cover 1 and the second annular cover 2 where the first lip 31 and the second lip 32 are located.
Example 3 this example differs from example 1 in that: an angle of 174 to 178 ° between the first lip 31 and the second lip 32, and, for example, 175 °, 176 °, 177 ° may be adopted.
In summary, the invention provides a non-centralized labyrinth and three-lip seal ring, which realizes a superior sealing effect with a smaller number of seal lips and an atypical labyrinth seal structure, and is particularly suitable for the third-generation hub bearing with low torque and low load.
Claims (7)
1. The utility model provides a wheel hub bearing outside labyrinth seal which characterized in that: the sealing device comprises a first annular cover rotating in use, a second annular cover fixed in use, a first lip, a second lip and a third lip, wherein the first lip and the second lip are arranged on the first annular cover, extend from the first annular cover to the inner surface of the second annular cover opposite to the first lip to form zero clearance fit and interference fit respectively, the third lip is arranged on the second annular cover, extend from the second annular cover to the inner surface of the first annular cover opposite to the second annular cover to form zero clearance fit, a horizontal inner groove is formed on the outer side of the first annular cover in a concave manner and is used for coaxial socket connection and fixation of an inner bearing ring, the inner groove corresponds to a protruding structure on the inner side of the first annular cover, the upper surface of the protruding structure is arranged opposite to the top parallel interval of the second annular cover and the third lip is arranged in the interval, the lower half part of the first annular cover below the protruding structure is inclined to the side where the second annular cover is located, the middle part of the bottom of the lower half of the first annular cover is located at the same time, and the protruding structure and the second lip is inclined to form an included angle with the first inclined or inclined main body parallel to the first annular cover and the lower lip is inclined to the first inclined or parallel to the second lip.
2. The hub bearing outer labyrinth seal as set forth in claim 1, wherein: the first and second lips are on the same side, the third lip is on the other side and the side on which the first and second lips are located is closer to the interior of the bearing in use.
3. The hub bearing outer labyrinth seal as set forth in claim 1, wherein: the bottom end of the first annular shroud is disposed opposite the second annular shroud in a gap, and the first lip is positioned in the gap for zero clearance fit with the second annular shroud.
4. The hub bearing outer labyrinth seal as set forth in claim 1, wherein: the bottom of the first annular cover is arranged in parallel with the middle of the second annular cover at intervals, and the second lip is arranged in the intervals.
5. The hub bearing outer labyrinth seal as set forth in claim 1, wherein: the semi-ring section of the second annular cover is C-shaped, the middle to the bottom of the semi-ring section is an arc line with smooth transition, and the top of the semi-ring section is two or more sections of lines with edges and corners.
6. The hub bearing outer labyrinth seal as set forth in claim 1, wherein: the top of the first annular cover extends towards the upper part of the top of the second annular cover, and a shielding part capable of shielding the end part of the top of the second annular cover is arranged.
7. The hub bearing outer labyrinth seal as claimed in claim 1 or 6, wherein: the third lip projects obliquely downward from the top of the second annular shroud into the first annular shroud;
and/or the gap between the first annular cover and the second annular cover where the third lip is located is smaller than that of the first lip and the second lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110937560.XA CN113847349B (en) | 2021-08-16 | 2021-08-16 | Labyrinth seal ring at outer side of hub bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110937560.XA CN113847349B (en) | 2021-08-16 | 2021-08-16 | Labyrinth seal ring at outer side of hub bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113847349A CN113847349A (en) | 2021-12-28 |
| CN113847349B true CN113847349B (en) | 2024-01-19 |
Family
ID=78975582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110937560.XA Active CN113847349B (en) | 2021-08-16 | 2021-08-16 | Labyrinth seal ring at outer side of hub bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847349B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004696A1 (en) * | 2008-07-08 | 2010-01-14 | Ntn株式会社 | Sealing device with magnetic encoder, and wheel bearing device using the sealing device |
| JP2012056411A (en) * | 2010-09-08 | 2012-03-22 | Ntn Corp | Wheel bearing device |
| CN103348153A (en) * | 2011-02-07 | 2013-10-09 | 谢夫勒科技股份两合公司 | Labyrinth seal of a radial rolling contact bearing having a radial flange |
| CN107044488A (en) * | 2017-02-22 | 2017-08-15 | 浙江万向精工有限公司 | Hub-bearing unit seal assembly |
| CN107949712A (en) * | 2015-08-31 | 2018-04-20 | Ntn株式会社 | Wheel bearing arrangement |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101681270B1 (en) * | 2015-01-30 | 2016-12-12 | 주식회사 일진글로벌 | Sealing structure of wheel bearing for vehicle |
| ITUB20160770A1 (en) * | 2015-02-17 | 2017-08-16 | Skf Ab | Seal assembly for rolling bearings, in particular for vehicle wheel hub units and associated wheel hub units. |
| WO2017061242A1 (en) * | 2015-10-09 | 2017-04-13 | Nok株式会社 | Sealing apparatus |
-
2021
- 2021-08-16 CN CN202110937560.XA patent/CN113847349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004696A1 (en) * | 2008-07-08 | 2010-01-14 | Ntn株式会社 | Sealing device with magnetic encoder, and wheel bearing device using the sealing device |
| JP2012056411A (en) * | 2010-09-08 | 2012-03-22 | Ntn Corp | Wheel bearing device |
| CN103348153A (en) * | 2011-02-07 | 2013-10-09 | 谢夫勒科技股份两合公司 | Labyrinth seal of a radial rolling contact bearing having a radial flange |
| CN107949712A (en) * | 2015-08-31 | 2018-04-20 | Ntn株式会社 | Wheel bearing arrangement |
| CN107044488A (en) * | 2017-02-22 | 2017-08-15 | 浙江万向精工有限公司 | Hub-bearing unit seal assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113847349A (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113847349B (en) | Labyrinth seal ring at outer side of hub bearing | |
| CN212959552U (en) | Sealing structure of bearing for belt pulley of decoupler built in automobile generator | |
| CN209483818U (en) | Bearing with sealing structure | |
| CN205429931U (en) | Arrange water pump rotor seal cover | |
| CN110886782A (en) | Sealed dustproof combined bearing sealing structure | |
| CN109268386A (en) | Nonstandard four point contact is usherd to seat roller bearing units | |
| CN209725208U (en) | Floating type double main lip combined seal rings | |
| CN2876457Y (en) | Composite sealing ring | |
| CN206320185U (en) | A kind of new ball bearing | |
| CN209212806U (en) | A kind of bearing sealed ring | |
| CN219549609U (en) | Novel crankshaft oil seal assembly structure for engine | |
| CN111288088A (en) | Wind generating set becomes oar bearing and protection sealing washer thereof | |
| CN217207732U (en) | Oil seal for oil return line | |
| CN201293046Y (en) | Bearing seal structure | |
| CN110594300A (en) | Automatic aligning labyrinth glued composite dust cover | |
| CN219035338U (en) | Suspension bearing with good sealing performance | |
| CN220523100U (en) | Automobile bearing sealing structure | |
| CN217207730U (en) | One-way oil seal | |
| CN211009893U (en) | Six-lip sealing ring | |
| CN212672243U (en) | Novel grease sealing ring for bearing | |
| CN217603350U (en) | Low-temperature high-pressure liquid oxygen rotary shaft seal | |
| CN205315506U (en) | Take resistant high pressure and high temperature of gas pocket and water proofness automobile water pump bearing seal circle | |
| CN217977361U (en) | Combined sealing ring structure suitable for vehicle hub bearing | |
| CN208106591U (en) | A kind of sealpiston-ring | |
| CN212615938U (en) | Wind generating set becomes oar bearing and protection sealing washer thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |