KR101814596B1 - Wheel bearing and sealing apparatus thereof - Google Patents
Wheel bearing and sealing apparatus thereof Download PDFInfo
- Publication number
- KR101814596B1 KR101814596B1 KR1020160026664A KR20160026664A KR101814596B1 KR 101814596 B1 KR101814596 B1 KR 101814596B1 KR 1020160026664 A KR1020160026664 A KR 1020160026664A KR 20160026664 A KR20160026664 A KR 20160026664A KR 101814596 B1 KR101814596 B1 KR 101814596B1
- Authority
- KR
- South Korea
- Prior art keywords
- hub
- flange
- press
- outer ring
- support member
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/001—Hubs with roller-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
- F16C33/72—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
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller 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
- F16C33/72—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2380/00—Bearings
- B60B2380/10—Type
- B60B2380/14—Roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel bearing and a sealing device for a wheel bearing, which prevent separation of a supporting member constituting a sealing device.
A wheel bearing according to an embodiment of the present invention includes: a hub having a stepped portion formed on the inner side and a wheel mounted on the outer side; An inner ring mounted to surround the step of the hub; An outer ring disposed so as to surround the outer circumferential surface of the hub and the outer circumferential surface of the inner ring at a predetermined distance; A rolling member interposed between the hub and the outer ring and between the inner ring and the outer ring; And an outer sealing device mounted between the axially outer surface of the outer ring and the hub.
The outer sealing device includes a hub support member that is press-fit into the hub, and the hub support member may be mounted to a hub flange extending radially outwardly from the cylindrical middle portion of the hub.
Description
BACKGROUND OF THE
Generally, a bearing is a device mounted between a rotating element and a non-rotating element to facilitate rotation of the rotating element. Currently, various bearings such as roller bearings, tapered bearings, and needle bearings are used.
Wheel bearings are one type of such bearings, which rotatably connect a wheel, which is a rotating element, to a vehicle body, which is a non-rotating element. The wheel bearing includes an inner ring (and / or hub) connected to one of the wheels or the vehicle body, an outer ring connected to the other one of the wheel or the vehicle body, and a rolling member interposed between the outer ring and the inner ring.
These wheel bearings are basically mounted on the wheels of the vehicle, and thus are exposed to foreign substances such as dust and moisture. If such foreign matter penetrates into the interior of the wheel bearing, particularly the portion where the rolling element is mounted, the raceway, which is a polishing surface, may be damaged. Such a damaged raceway may cause noise and vibration during operation of the wheel bearing and shorten the life of the wheel bearing. Therefore, at one end or both ends of the wheel bearing, a sealing device for preventing foreign matter from entering from the outside and preventing leakage of filled grease or the like for lubrication of the rolling member is mounted.
Such a sealing device includes a support member mounted on a hub, an outer ring or an inner ring, and a lip coupled to the support member in a shape protruding from the support member. The outer ring and the inner ring (and / Hub) of the present invention.
However, if the support member is detached from the home position mounted on the hub, the outer ring or the inner ring, the sealing performance of the wheel bearing sealing device may be deteriorated. Further, if the support member is excessively separated from the hub, the outer ring or the inner ring, the self-performance of the wheel bearing may be adversely affected.
Particularly, in a vehicle in which a wheel is coupled to the hub (and / or outer ring), the hub (and / or the outer ring) is instantaneously or continuously connected by a load transmitted to the wheel depending on a load transmitted to the wheel directly from the ground, So that the support member mounted on the hub (and / or the outer ring) can be released from the original mounting position.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a wheel for preventing detachment of a support member, which is mounted on a hub (and / or an outer ring) And to provide a sealing device for a bearing and a wheel bearing.
According to an aspect of the present invention, there is provided a wheel bearing comprising: a hub having a stepped portion formed on an inner side thereof and a wheel mounted on an outer side thereof; An inner ring mounted to surround the step of the hub; An outer ring disposed so as to surround the outer circumferential surface of the hub and the outer circumferential surface of the inner ring at a predetermined distance; A rolling member interposed between the hub and the outer ring and between the inner ring and the outer ring; And an outer sealing device mounted between the axially outer surface of the outer ring and the hub.
Wherein the outer sealing device includes a hub support member mounted to the hub and the hub support member is press-fitted into a surface formed parallel to the axial direction in a hub flange extending radially outward from the cylindrical middle portion of the hub .
The hub flange includes: a flange first inner surface opposed to an outer surface of the outer ring; A flange second inner surface stepped axially with the flange first inner surface; And a flange stepped surface connecting the first inner surface of the flange and the second inner surface of the flange in parallel to the axial direction.
And the hub support member can be press-fitted into the flange step difference surface.
Wherein the hub support member includes: a hub support portion that is held in surface contact with the first inner surface of the flange when the hub support member is press-fitted into the flange step difference surface; A hub press-in portion bent and extended from the hub support portion toward the flange second inner surface axially outwardly, and disposed at the flange step difference surface; And a bending extension portion that extends inwardly in the axial direction from the hub press-in portion.
When the hub flange is deformed, the hub support is deformed together with the flange first inner surface, and the hub press-in portion can be deformed together with the flange step difference surface.
The inner diameter of the hub press-fit portion may be formed to have a size corresponding to the outer diameter of the flange step surface so that the hub press-fit portion is press-fitted into the flange step surface.
The bend extension portion and the hub press-fit portion form a "U"
The hub press-in portion may extend to a position spaced a certain distance from the second inner surface of the flange.
The predetermined distance between the hub press-fit portion and the second inner surface of the flange may be 0.3 mm or more and 1.0 mm or less.
The bending extension may extend inwardly in the axial direction from the axially outer surface of the outer ring.
The hub flange may further include a hub outer circumferential surface sandwiched radially with the flange stepped surface with the first inner surface of the flange interposed therebetween.
The hub support member may further include an inner hub press-in portion that extends inwardly in the axial direction from the hub support portion so as to be disposed on the outer circumferential surface of the hub.
The inner hub press-fit portion has a size such that its inner diameter corresponds to the outer diameter of the outer peripheral surface of the hub, and can be press-fitted into the outer peripheral surface of the hub.
The wheel bearing sealing device according to the embodiment of the present invention includes an outer ring supporting member mounted on the outer ring in the wheel bearing, a hub supporting member mounted on the hub, and a sealing member disposed between the outer ring supporting member and the hub supporting member The bearing device may be a sealing device of a wheel bearing.
The hub support member comprising: a hub support disposed on one axial inner surface of a hub flange formed on the hub; A hub press-in portion bent axially outward from the radially outer end of the hub support and extending toward the other axial inner surface of the hub flange; And a bending extension portion that extends inwardly in the axial direction from the hub press-in portion.
The hub press-in portion can be press-fitted into the stepped surface of the hub flange connecting one axial inner surface of the hub flange and the other axial inner surface.
The inner diameter of the hub press-fit portion may be formed to have a size corresponding to the outer diameter of the stepped surface of the hub flange.
When the hub flange is deformed, the hub support deforms with one axial inner surface of the hub flange, and the hub press-in portion can be deformed together with the step surface of the hub flange.
The bend extension portion and the hub press-fit portion may be formed in a "U" shape.
The hub press-in portion may extend to a position spaced a distance from the axially inner surface of the other one of the hub flanges.
The predetermined distance between the hub press-fit portion and the other axial inner surface of the hub flange may be 0.3 mm or more and 1.0 mm or less.
The bending extension may extend inwardly in the axial direction from the axially outer surface of the outer ring.
The outer ring support member includes: an outer ring supporter disposed on an axially outer surface of the outer ring in parallel to the hub support portion; And an outer ring press-fitting portion that is bent inwardly in the axial direction from the outer ring support portion and extends to be disposed on an axially outer outer circumferential surface of the outer ring, and is press-fitted into the outer circumferential surface of the outer ring.
The hub support member may further include an inner hub press-in portion that extends inwardly in the axial direction from the radially inner end of the hub support portion.
The inner hub press-in portion can be press-fitted into the outer peripheral surface of the hub which is stepped radially with the step surface of the hub flange.
The inner diameter of the inner hub press-in portion may be formed to have a size corresponding to an outer diameter of the outer circumferential surface of the hub.
As described above, according to the embodiment of the present invention, the hub support member is pressed into the stepped surface of the hub flange, so that the hub support member can be prevented from being dislocated by the deformation of the hub flange in accordance with the axial load.
Further, since the press-fit portion of the hub support member and the inner surface of the flange are spaced apart from each other by a certain distance, the axial load can be prevented from being transmitted to the hub support member even if the inner surface of the flange is deformed to some extent.
Thus, the sealing performance of the wheel bearing sealing device can be ensured and ultimately the reliability of the wheel bearing's own performance can be improved.
1 is a configuration diagram of a wheel bearing according to an embodiment of the present invention.
Fig. 2 is a configuration diagram of a sealing device for a wheel bearing in which the portion "A" in Fig. 1 is enlarged.
3 is a block diagram of a wheel bearing according to another embodiment of the present invention.
Fig. 4 is a configuration diagram of a sealing device for a wheel bearing in which the portion "B" in Fig. 3 is enlarged.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the following description, for convenience of explanation, the side near the wheel in the axial direction (left side in the drawing) is referred to as "one side", "one side", "one side edge" Will be referred to as 'other side', 'other end', 'other end' and similar names.
1 is a configuration diagram of a wheel bearing according to an embodiment of the present invention.
1, a wheel bearing 1 according to an embodiment of the present invention includes a
The
A
A
A
A
The
The
A first
The outer peripheral surface of the
The first rolling
On the other hand, the plurality of rolling elements constituting the first and second rolling element rows (13, 14) are arranged at intervals set by the retainer or the cage (19), and the intervals therebetween can be maintained.
The
The
Hereinafter, the
Fig. 2 is a configuration diagram of a sealing device for a wheel bearing in which the portion "A" in Fig. 1 is enlarged.
2, the
The outer
The
The outer ring press-fitting
The
The
The hub press-
The bending
The
For example, when the
The sealing
Hereinafter, another embodiment modified from the embodiment of the present invention will be described with reference to FIG. 3 and FIG.
Fig. 3 is a configuration diagram of a wheel bearing according to another embodiment of the present invention, and Fig. 4 is a configuration diagram of a sealing device for a wheel bearing in which a portion "B"
In the following description, repetitive description of the same components as those of the embodiment of the present invention described above with reference to Figs. 1 and 2 will be omitted.
3 and 4, the
The inner hub press-in
The support member press-in
As described above, the
In comparison between the embodiment of the present invention and the other embodiments, the embodiment of the present invention is characterized in that when the flange first
As described above, according to the embodiments of the present invention, the
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.
1: Wheel bearing
10: hub 11: inner ring
12:
12b: outer peripheral surface of outer ring
13: first rolling member column 14: second rolling member column
15:
15b: flange stepped
17, 37: bolt hole 18: pilot
19: Cage 20: Inner sealing device
25: Middle hub
31: hub raceway 32: inner race raceway
35: Inner wheel mounting portion
39: Pillow flange
41: first outer race raceway 42: second outer race raceway
50: hub bend 59: bolt
100, 100a: outer sealing device 110: outer ring supporting member
112: outer ring supporting portion 114: outer ring press fitting portion
120: hub support member 122: hub support
124: hub press-in portion 126:
128: Inner hub press-
130: Sealing member 132: Seal lip
Claims (24)
An inner ring mounted to surround the step of the hub;
An outer ring disposed so as to surround the outer circumferential surface of the hub and the outer circumferential surface of the inner ring at a predetermined distance;
A rolling member interposed between the hub and the outer ring and between the inner ring and the outer ring; And
An outer sealing device mounted between the axially outer surface of the outer ring and the hub;
, ≪ / RTI &
Wherein the outer sealing device includes a hub support member mounted to the hub,
A hub flange extending radially outwardly from the cylindrical middle portion of the hub,
A first flange inner surface opposed to an outer surface of the outer ring;
A flange second inner surface stepped axially with the flange first inner surface; And
A flange stepped surface connecting the first inner surface of the flange and the second inner surface of the flange in parallel to the axial direction;
/ RTI >
The hub support member is press-fitted into the flange step difference surface,
The hub-
A hub support portion supported in surface contact with the first inner surface of the flange when press-fitted into the flange step difference surface;
A hub press-in portion bent and extended from the hub support portion toward the flange second inner surface axially outwardly, and disposed at the flange step difference surface; And
A bending extension portion that extends inwardly in the axial direction from the hub press-in portion;
Wherein the wheel bearing comprises:
When the hub flange is deformed,
Wherein the hub support portion is deformed together with the flange first inner surface, and the hub press-in portion is deformed together with the flange step difference surface.
Wherein an inner diameter of the hub press-fit portion is formed to have a size corresponding to an outer diameter of the flange step surface so that the hub press-fitting portion is press-fitted into the flange step surface.
Wherein the bend extension portion and the hub press-fit portion form a "U" shape.
Wherein the hub press-in portion extends to a position spaced a distance from the second inner surface of the flange.
And the predetermined distance between the hub press-in portion and the second inner surface of the flange is 0.3 mm or more and 1.0 mm or less.
And the bending extension portion extends axially inwardly of the axially outer surface of the outer ring.
Wherein the hub flange further comprises a hub outer circumferential surface sandwiched between the flange step inner surface and the radially inner surface with the first inner surface of the flange interposed therebetween,
And the hub support member further includes an inner hub press-in portion which is bent and axially inwardly extended from the hub support portion so as to be disposed on the outer circumferential surface of the hub.
Wherein the inner hub press-fit portion is formed to have an inner diameter corresponding to an outer diameter of the outer peripheral surface of the hub, and is press-fitted into the outer peripheral surface of the hub.
The hub-
A hub support disposed on one axial inner surface of the hub flange formed on the hub;
A hub press-in portion bent axially outward from the radially outer end of the hub support and extending toward the other axial inner surface of the hub flange; And
A bending extension portion that extends inwardly in the axial direction from the hub press-in portion;
Wherein the bearing device comprises:
And the hub press-in portion is press-fitted into the stepped surface of the hub flange connecting one axial inner surface of the hub flange and the other axial inner surface.
And the inner diameter of the hub press-fit portion is formed to have a size corresponding to the outer diameter of the stepped surface of the hub flange.
When the hub flange is deformed,
Wherein the hub support portion is deformed together with one axial inner surface of the hub flange and the hub press-in portion is deformed together with the step surface of the hub flange.
Wherein the bend extension and the hub press-fit portion form a " U "shape and are superimposed.
Wherein the hub press-fit portion extends to a position spaced a distance from the axially inner surface of the other one of the hub flanges.
And a predetermined distance between an axial inner surface of the hub press-fit portion and the other one of the hub flanges is 0.3 mm or more and 1.0 mm or less.
Wherein the bending extension portion extends axially inwardly of the axially outer surface of the outer ring.
Wherein the outer ring-
An outer ring supporter disposed on an axially outer surface of the outer ring in parallel with the hub support portion; And
An outer ring press-fitting portion which is bent inward in the axial direction from the outer ring support portion and extended to be disposed on an outer axial outer surface of the outer ring, and press-fitted into the outer peripheral surface of the outer ring;
Wherein the bearing device comprises:
Wherein the hub support member further comprises an inner hub press-fit portion that extends axially inwardly from the radially inner end of the hub support.
Wherein the inner hub press-fitting portion is press-fitted into the outer peripheral surface of the hub which is stepped radially with the step surface of the hub flange.
Wherein an inner diameter of the inner hub press-fit portion is formed to have a size corresponding to an outer circumference of the hub.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160026664A KR101814596B1 (en) | 2016-03-04 | 2016-03-04 | Wheel bearing and sealing apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160026664A KR101814596B1 (en) | 2016-03-04 | 2016-03-04 | Wheel bearing and sealing apparatus thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170103569A KR20170103569A (en) | 2017-09-13 |
KR101814596B1 true KR101814596B1 (en) | 2018-01-04 |
Family
ID=59967885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020160026664A KR101814596B1 (en) | 2016-03-04 | 2016-03-04 | Wheel bearing and sealing apparatus thereof |
Country Status (1)
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KR (1) | KR101814596B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200117329A (en) | 2019-04-03 | 2020-10-14 | 주식회사 일진글로벌 | Bearing device provided with inner pressure discharging groove |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009292303A (en) * | 2008-06-05 | 2009-12-17 | Ntn Corp | Bearing device for wheel |
US20100244388A1 (en) | 2007-12-17 | 2010-09-30 | Nok Corporation | Sealing device |
CN103206458A (en) | 2012-01-17 | 2013-07-17 | 株式会社捷太格特 | Wheel rolling bearing device |
-
2016
- 2016-03-04 KR KR1020160026664A patent/KR101814596B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100244388A1 (en) | 2007-12-17 | 2010-09-30 | Nok Corporation | Sealing device |
JP2009292303A (en) * | 2008-06-05 | 2009-12-17 | Ntn Corp | Bearing device for wheel |
CN103206458A (en) | 2012-01-17 | 2013-07-17 | 株式会社捷太格特 | Wheel rolling bearing device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200117329A (en) | 2019-04-03 | 2020-10-14 | 주식회사 일진글로벌 | Bearing device provided with inner pressure discharging groove |
Also Published As
Publication number | Publication date |
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KR20170103569A (en) | 2017-09-13 |
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