CN107504075A - Novel wheel hub bearing unit seal assembly - Google Patents
Novel wheel hub bearing unit seal assembly Download PDFInfo
- Publication number
- CN107504075A CN107504075A CN201710804931.0A CN201710804931A CN107504075A CN 107504075 A CN107504075 A CN 107504075A CN 201710804931 A CN201710804931 A CN 201710804931A CN 107504075 A CN107504075 A CN 107504075A
- Authority
- CN
- China
- Prior art keywords
- skeleton
- lip
- outside
- raceway
- static
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000003068 static effect Effects 0.000 claims abstract description 30
- 238000005452 bending Methods 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 239000004519 grease Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- -1 silt Substances 0.000 description 1
- 239000013589 supplement Substances 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
- F16C33/78—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
- F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
-
- 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
- F16C33/72—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
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
-
- 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)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The present invention relates to a kind of novel wheel hub bearing unit seal assembly, its structure includes the static skeleton being arranged on outer ring and the rotation skeleton being arranged on ring flange, raceway is formed between the outer ring and ring flange, cavity and space are formed on the outside of the raceway, the rotation skeleton is set in the cavities close to the position of raceway, water dumping lip is provided with the rotation skeleton, the water dumping lip autorotation skeleton is obliquely installed to the lateral direction of outer ring and is engaged with static skeleton；Raceway is isolated from the outside by rotation skeleton, water dumping lip and the static skeleton, and the cavity rotated on the outside of skeleton, water dumping lip and static skeleton forms storage chamber.The present invention provides a kind of new seal component architecture and set-up mode, so as to avoid the water of outside from being flowed to along seal near lip, and in time can discharge the water of entrance；Secondly, the structure and set-up mode can automatically adjust the relation of draining and sealing according to lateral load size.
Description
Technical field
The present invention relates to a kind of sealing device, particularly a kind of novel wheel hub bearing unit seal assembly.
Background technology
Because the hub bearing of automobile has very high requirement for durability and reliability, except avoiding automobile bearing from going out
Beyond existing raceway fatigue failure, hub bearing seal fails are also relatively common failure mode, frequently can lead to the external world
The pollutants such as silt, dust and steam are invaded in bearing, bearing is produced abnormal sound, are accelerated the abrasion of raceway groove and steel ball, are made steel
There is fatigue flake in ball, channel surface, and internal grease is revealed laterally, causes insufficient lubrication, influences life of product, if grease is let out
Drain on brake disc or brake drum, its stopping power can be caused to decline and fail, consequence is very serious.
Chinese patent bulletin text CN107044488A discloses a kind of new hub-bearing unit seal assembly, its
On the basis of existing seal assembly, rubber bumps are increased newly and have not contacted lip to reduce the possibility of external foreign matter intrusion bearing
Property, but still exist and seal the problem of unreal, main cause is that water still can be flowed near lip along seal assembly
And flowed into from gap in lip, although the rubber components that the technical scheme of the patent application reduces at sealing can with abnormal contact
Energy property, but can not effectively handle the infiltration problem for remaining in water on seal assembly.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of new seal component architecture and set-up mode, so as to avoid
Outside water is flowed near lip along seal, and in time can be discharged the water of entrance；Secondly, the structure and setting side
Formula can automatically adjust the relation of draining and sealing according to lateral load size.
Technical scheme is used by the present invention solves above-mentioned technical problem：
A kind of novel wheel hub bearing unit seal assembly, its structure include static skeleton and the setting being arranged on outer ring
Rotation skeleton on ring flange, raceway is formed between the outer ring and ring flange, cavity and space, institute are formed on the outside of the raceway
State the setting of rotation skeleton and be provided with water dumping lip, the water dumping lip on skeleton close to the position of raceway, described rotate in the cavities
Mouth autorotation skeleton is obliquely installed to the lateral direction of outer ring and is engaged with static skeleton；The rotation skeleton, water dumping lip
Raceway is isolated from the outside with static skeleton, the cavity rotated on the outside of skeleton, water dumping lip and static skeleton forms water storage
Chamber.Set by the seal assembly of the structure, muddy water initially enters storage chamber without adhering to after entering hub-bearing unit
On water dumping lip, flowed to so as to avoid water along seal near lip, and water dumping lip rotating through in bearing unit
Journey can utilize the effect of centrifugal force when rotating to play the effect of water dumping, the water in storage chamber is arranged from hub-bearing unit
Go out.
Further, the skeleton that rotates is provided with the inner fovea part extended to raceway.Indent in the middle part of skeleton is rotated to set, can
To create more water storage spaces, so as to which the space of outside cavity is fully utilized.
Preferably, the outer ring is inclined plane close to the inner surface of ring flange, the inner surface inclines from space to raceway
Tiltedly taper into the cross-sectional volume of storage chamber, the static skeleton presses close to inclined plane setting.Ring flange, which is arranged to inclined plane, to be made
Water is easier to discharge out of storage chamber, and angle is smaller so as to reducing rotational resistance between water dumping lip and static skeleton.
Further, the static skeleton is packaged on the outer surface, end and inner surface of outer ring, on the outside of the end
Static skeleton is provided with first projection in L-shaped section, and first projection is prolonged to be arranged to annular and form draining on the outside of end
Groove.The water for enabling to enter rhone by the first raised setting is discharged from below by gravity along rhone, so as to reduce into
Enter the water of storage chamber.
Further, between ring flange there is gap in first projection in its natural state, and the gap is convex first
Rise and diminish when being in mated condition with ring flange.First projection does not contact when lateral load is small with ring flange, so as to subtract
Slight drag, and in this condition water enter storage chamber possibility it is smaller, gap makes the water in storage chamber effectively to pass through centrifugation
Power effect discharge；When lateral load is big, water is easier into storage chamber and more than the speed of centrifugal force discharge, therefore between reduction
Gap size or eliminate the gap make water enter storage chamber possibility further reduce.
Preferably, the static skeleton on the outside of the outer surface is provided with the second projection.Resistance is played in second raised setting
The outside muddy water of gear flows directly into the effect of storage chamber from upside.
Preferably, being additionally provided with the oily lip of gear on the rotation skeleton, the oily lip of gear is bending structure, described interior
The static skeleton end of outer side surface is connected with bending part, and the bending part is engaged with keeping off oily lip.Prevent internal grease from leaking.
Rotated preferably, the water dumping lip is connected to by rubber parts on skeleton, the rubber parts is wrapped in rotation
The skeleton side adjacent with storage chamber.Muddy water in storage chamber may produce corrosion to rotating skeleton, pass through rubber parts anti-package
Wrap up in and play a part of protection rotation skeleton.
The present invention compared with the existing technology has advantages below and effect：Set by the seal assembly of the present invention, muddy water
Storage chamber is initially entered without being adhered on water dumping lip after into hub-bearing unit, so as to avoid water along sealing
Part is flowed near lip, and water dumping lip can utilize the effect of centrifugal force when rotating to play in the rotary course of bearing unit
The effect of water dumping, the water in storage chamber is set to be discharged from hub-bearing unit.Rotate indent in the middle part of skeleton to set, can create
More water storage spaces, so as to which the space of outside cavity is fully utilized.Ring flange be arranged to inclined plane make water be easier from
Discharge in storage chamber, and angle is smaller so as to reducing rotational resistance between water dumping lip and static skeleton.Pass through setting for the first projection
Putting enables the water into rhone to be discharged from below along rhone by gravity, so as to reduce the water into storage chamber.First is convex
Rise and do not contacted when lateral load is small with ring flange, so as to reduce resistance, and in this condition water enter storage chamber can
Energy property is smaller, and gap makes the water in storage chamber effectively can be discharged by centrifugal action；When lateral load is big, water be easier into
Enter storage chamber and more than centrifugal force discharge speed, therefore reduce gap length or eliminate the gap make water enter storage chamber can
Energy property further reduces.Second raised setting is played a part of stopping that outside muddy water flows directly into storage chamber from upside and keeps off oil
Lip plays a part of preventing grease from leaking.Setting is wrapped up in by rubber parts anti-package and plays a part of protection rotation skeleton, so as to prolong
The life-span of long seal.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Label declaration：
The static outer ring inclined inner surface 12 of skeleton 11 in outer ring 1
Ring flange 2 rotates skeleton 21 and rotates skeleton inner fovea part 22
The cavity 4 of 23 raceway of outpacking rubber 3
The water dumping lip 6 of 5 gap of space 51
Keep off raised 8 second projections 9 of oily lip 7 first
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Embodiment 1：
As shown in figure 1, raceway 3, cavity 4 and space 5 are formed between the outer ring 1 of the present embodiment and ring flange 2, wherein static
Skeleton 11 is arranged on the outer surface, end and inner surface of outer ring 1, is rotated skeleton 21 and is arranged on ring flange 2 and positioned at sky
Close to the position of raceway 3 in chamber 4, the upper end for rotating skeleton 21 is connected with water dumping lip 6, the autorotation skeleton 21 of water dumping lip 6 to
The direction of space 5 is obliquely installed and the static skeleton 11 with being arranged on the inner surface of outer ring 1 is interference fitted, so as to by raceway 3 with
External world's isolation, and storage chamber is formed in the part of cavity 4 for rotating the outside of skeleton 21, the middle part for rotating skeleton 21 is arranged to rolling
The direction of road 3 is recessed inner fovea part 22, so that water storage cavity space is bigger.The upper end another side for rotating skeleton 21 is connected with gear oil
Lip 7, oily lip 7 is kept off as bending structure and is engaged with static skeleton 11 close to the bending part of raceway 3.On the outside of the end of outer ring 1
Static skeleton 11 be provided with first projection 8 in L-shaped section, the first projection 8 is prolonged and is arranged to annular and the row of being formed on the outside of end
Tank, the first projection 8 is not in contact with ring flange 2 under nature, forms gap 51, when lateral load is big, method between the two
Blue disk 2 is close to the first projection 8, and gap 51 tapers into finally to be in contact with the first projection 8.It is quiet on the outside of the outer surface of outer ring 1
Only skeleton 11 is provided with the second projection, and the second raised height is higher by plane 3mm or so.
Embodiment 2：
The scheme of embodiment 2 and embodiment 1 is essentially identical, and distinctive points are inner surface 12 of the outer ring close to ring flange to incline
Inclined-plane, inner surface 12 tilts from space 5 to raceway 3 tapers into the cross-sectional volume of storage chamber, and static skeleton 11 is pressed close to tilt
Face is set, and the outside for rotating skeleton 21 is provided with outpacking rubber 23.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or substituted using similar mode, structure without departing from the present invention or surmounts this
Scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (8)
1. a kind of novel wheel hub bearing unit seal assembly, including the static skeleton being arranged on outer ring and it is arranged on ring flange
On rotation skeleton, form raceway between the outer ring and ring flange, form cavity on the outside of the raceway and space, its feature exist
In：The rotation skeleton is set in the cavities close to the position of raceway, and described rotate is provided with water dumping lip on skeleton, described to get rid of
Water lip autorotation skeleton is obliquely installed to the lateral direction of outer ring and is engaged with static skeleton；The rotation skeleton, water dumping
Raceway is isolated from the outside by lip and static skeleton, and the cavity rotated on the outside of skeleton, water dumping lip and static skeleton is formed
Storage chamber.
2. novel wheel hub bearing unit seal assembly according to claim 1, it is characterised in that：On the rotation skeleton
Provided with the inner fovea part extended to raceway.
3. novel wheel hub bearing unit seal assembly according to claim 2, it is characterised in that：The outer ring is close to method
The inner surface of blue disk is inclined plane, and the inner surface tilts from space to raceway tapers into the cross-sectional volume of storage chamber, institute
State static skeleton and press close to inclined plane setting.
4. novel wheel hub bearing unit seal assembly according to claim 1, it is characterised in that：The static skeleton bag
It is located on the outer surface, end and inner surface of outer ring, the static skeleton on the outside of the end first provided with L-shaped section is convex
Rise, first projection is prolonged to be arranged to annular and form rhone on the outside of end.
5. novel wheel hub bearing unit seal assembly according to claim 4, it is characterised in that：First projection exists
Gap under nature between ring flange be present, the gap diminishes when the first projection is in mated condition with ring flange.
6. the novel wheel hub bearing unit seal assembly according to claim 4 or 5, it is characterised in that：The outer surface
It is raised that the static skeleton in outside is provided with second.
7. the novel wheel hub bearing unit seal assembly according to claim 4 or 5, it is characterised in that：The rotation bone
It is additionally provided with the oily lip of gear on frame, the oily lip of gear is bending structure, and the static skeleton end on the outside of the inner surface is connected with
Bending part, the bending part are engaged with keeping off oily lip.
8. novel wheel hub bearing unit seal assembly according to claim 1, it is characterised in that：The water dumping lip leads to
Cross rubber parts to be connected on rotation skeleton, the rubber parts, which is wrapped in, rotates the skeleton side adjacent with storage chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804931.0A CN107504075A (en) | 2017-09-08 | 2017-09-08 | Novel wheel hub bearing unit seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804931.0A CN107504075A (en) | 2017-09-08 | 2017-09-08 | Novel wheel hub bearing unit seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107504075A true CN107504075A (en) | 2017-12-22 |
Family
ID=60695236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710804931.0A Pending CN107504075A (en) | 2017-09-08 | 2017-09-08 | Novel wheel hub bearing unit seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107504075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503162A (en) * | 2020-04-24 | 2020-08-07 | 浙江万向精工有限公司 | Hub bearing unit of diversion type high-sealing low-torque sealing structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2350138A1 (en) * | 2000-08-28 | 2002-02-28 | Brenco, Incorporated | Seal assembly |
| WO2010013439A1 (en) * | 2008-07-30 | 2010-02-04 | Ntn株式会社 | Wheel-bearing device |
| JP2010048346A (en) * | 2008-08-22 | 2010-03-04 | Ntn Corp | Wheel-bearing device |
| JP2010065800A (en) * | 2008-09-12 | 2010-03-25 | Jtekt Corp | Rolling bearing device |
| CN201436417U (en) * | 2009-07-06 | 2010-04-07 | 上海人本集团有限公司 | Complex seal element for automobile wheel hub bearing |
| CN104053934A (en) * | 2012-03-22 | 2014-09-17 | 舍弗勒技术有限两合公司 | Cassette seal, particularly for a wheel bearing arrangement of a motor vehicle |
| CN204253601U (en) * | 2014-12-05 | 2015-04-08 | 新昌县开源汽车轴承有限公司 | The hub-bearing unit of the two raceway of a kind of flange plate |
| WO2015064400A1 (en) * | 2013-11-01 | 2015-05-07 | 内山工業株式会社 | Bearing sealing device |
| WO2015119215A1 (en) * | 2014-02-05 | 2015-08-13 | Ntn株式会社 | Bearing device for wheel |
| CN105840664A (en) * | 2015-01-30 | 2016-08-10 | 日进全球株式会社 | Sealing structure of wheel bearing for vehicle and wheel bearing provided with the same |
| CN105909796A (en) * | 2016-06-17 | 2016-08-31 | 浙江万向精工有限公司 | Outer sealing assembly with two skeletons |
-
2017
- 2017-09-08 CN CN201710804931.0A patent/CN107504075A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2350138A1 (en) * | 2000-08-28 | 2002-02-28 | Brenco, Incorporated | Seal assembly |
| WO2010013439A1 (en) * | 2008-07-30 | 2010-02-04 | Ntn株式会社 | Wheel-bearing device |
| JP2010048346A (en) * | 2008-08-22 | 2010-03-04 | Ntn Corp | Wheel-bearing device |
| JP2010065800A (en) * | 2008-09-12 | 2010-03-25 | Jtekt Corp | Rolling bearing device |
| CN201436417U (en) * | 2009-07-06 | 2010-04-07 | 上海人本集团有限公司 | Complex seal element for automobile wheel hub bearing |
| CN104053934A (en) * | 2012-03-22 | 2014-09-17 | 舍弗勒技术有限两合公司 | Cassette seal, particularly for a wheel bearing arrangement of a motor vehicle |
| WO2015064400A1 (en) * | 2013-11-01 | 2015-05-07 | 内山工業株式会社 | Bearing sealing device |
| WO2015119215A1 (en) * | 2014-02-05 | 2015-08-13 | Ntn株式会社 | Bearing device for wheel |
| CN204253601U (en) * | 2014-12-05 | 2015-04-08 | 新昌县开源汽车轴承有限公司 | The hub-bearing unit of the two raceway of a kind of flange plate |
| CN105840664A (en) * | 2015-01-30 | 2016-08-10 | 日进全球株式会社 | Sealing structure of wheel bearing for vehicle and wheel bearing provided with the same |
| CN105909796A (en) * | 2016-06-17 | 2016-08-31 | 浙江万向精工有限公司 | Outer sealing assembly with two skeletons |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503162A (en) * | 2020-04-24 | 2020-08-07 | 浙江万向精工有限公司 | Hub bearing unit of diversion type high-sealing low-torque sealing structure |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |