KR101779787B1 - Wheel bearing - Google Patents

Wheel bearing Download PDF

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Publication number
KR101779787B1
KR101779787B1 KR1020150143586A KR20150143586A KR101779787B1 KR 101779787 B1 KR101779787 B1 KR 101779787B1 KR 1020150143586 A KR1020150143586 A KR 1020150143586A KR 20150143586 A KR20150143586 A KR 20150143586A KR 101779787 B1 KR101779787 B1 KR 101779787B1
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KR
South Korea
Prior art keywords
slinger
wheel hub
fixing
bearing
bearing space
Prior art date
Application number
KR1020150143586A
Other languages
Korean (ko)
Other versions
KR20170043918A (en
Inventor
윤효중
이범수
Original Assignee
주식회사 일진글로벌
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 주식회사 일진글로벌 filed Critical 주식회사 일진글로벌
Priority to KR1020150143586A priority Critical patent/KR101779787B1/en
Publication of KR20170043918A publication Critical patent/KR20170043918A/en
Application granted granted Critical
Publication of KR101779787B1 publication Critical patent/KR101779787B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0005—Hubs with ball bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0073—Hubs characterised by sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0078—Hubs characterised by the fixation of bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0078—Hubs characterised by the fixation of bearings
    • B60B27/0089—Hubs characterised by the fixation of bearings caulking to fix outer 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
    • F16C33/78—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
    • F16C33/783—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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Abstract

A wheel bearing is disclosed. A slinger mounted on the wheel hub, and a fixing member coupled to the slinger for fixing the slinger to the wheel hub, thereby improving the mounting stability of the slinger to the wheel hub, thereby improving the sealing performance of the wheel bearing.

Description

Wheel bearing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel bearing, and more particularly, to a wheel bearing that effectively prevents foreign matter from entering into a bearing through stable mounting of a slinger.

Generally, a bearing is a mechanical element that fixes the axis of a rotating machine at a fixed position, supports the load applied to the shaft together with the weight of the shaft, and supports the shaft so that it can rotate smoothly. It is divided into sliding bearings and rolling bearings, and is divided into radial bearings and thrust bearings depending on the direction of supporting the load.

The rolling bearing supports a rotating shaft using a rolling member such as a ball or a roller. The rolling bearing has a cylindrical roller bearing, a tapered roller bearing, and a needle bearing depending on the shape of the roller.

A wheel bearing used in a vehicle is a type of bearing as described above, which is mounted on a wheel of a vehicle to support the load of the wheel and the vehicle, receives the force of the drive shaft to minimize the rotational resistance and transmits the wheel to the wheel, And serves to support the impact generated by the axle generated during rotation and the impact generated when bouncing the vehicle up and down.

FIG. 1 is a cross-sectional view showing a structure of a wheel bearing according to a related art, and FIG. 1 is a cross-sectional view of a wheel bearing according to a related art, wherein the outer ring 10, the wheel hub 20, the bearing space between the wheel hub 20 and the outer ring 10 A plurality of inserted rolling elements 30, and a seal 50 and a slinger 40 sealing the bearing space, respectively.

The outer ring 10 is fixedly connected to a vehicle body or knuckle (not shown), and supports the wheel hub 20 in a radially inward direction.

The wheel hub 20 includes a radially expanded flange 22 and an unillustrated hub bolt through the flange 22 is fastened to the wheel and serves to rotatably support the wheel .

The rolling elements 30 are ball-shaped and arranged in a plurality of rows along the circumferential direction, and arranged in a heat-insulating or double-row manner along the axial direction so that relative rotation can be established between the outer ring 10 and the wheel hub 20.

In order to prevent foreign matter such as moisture from entering into the bearing space formed for smooth relative rotation of the wheel hub 20 with respect to the outer ring 10, a slinger (not shown) is formed on the outer periphery of the wheel hub 20, And the seal 50 is mounted on the axial front end portion and the outer circumferential surface of the outer ring 10 facing the outer circumferential surface of the wheel hub 20.

However, in the conventional wheel bearing sealing structure as described above, when a load is applied to the wheel bearing, the slinger 40 does not maintain the initial mounted position and moves in the axial direction and / or the radial direction, The foreign matter may flow into the interior of the bearing space through the inlet, thereby deteriorating the performance of the bearing.

The embodiment of the present invention has been devised to solve the above-described problems, and it is possible to mount the slinger more firmly on the wheel hub, so that even if the slinger receives an external load, The present invention is intended to provide a wheel bearing capable of reliably preventing intrusion of foreign matter into the inside of the wheel bearing and effectively preventing the lubricating oil from leaking out of the wheel bearing to improve the durability and life of the wheel bearing.

A wheel bearing according to an embodiment of the present invention includes a slinger mounted on a wheel hub and a fixing member coupled to the slinger, wherein the fixing member is seated on the slinger on the opposite side of the wheel hub with respect to the slinger And a plurality of through holes formed in the slinger to prevent the slinger from being detached from the wheel hub in the axial direction, And a fixing protrusion inserted into the fixing groove formed in the wheel hub.

The slinger and the fixing member may be formed in a ring shape.

Wherein the fixing member includes at least one fixing protrusion; The wheel hub may include a fixing groove into which the at least one fixing protrusion is inserted.

The at least one fixing protrusion may be disposed at a predetermined interval along the circumferential direction.

The fixing member may be formed in a block shape and may be coupled to the slinger by at least one number.

The slinger being formed in a ring shape; The at least one fixing member may be disposed at a predetermined interval along the circumferential direction of the ring shape.

Wherein the at least one holding member includes a fixing protrusion, respectively; The wheel hub may include a fixing groove into which the fixing protrusion is inserted.

The wheel hub being engaged with the outer ring and relatively rotatably engaged; A radially and axially extending bearing space is formed between the wheel hub and the outer ring; The wheel hub comprising a flange defining an inlet of the bearing space and a cylindrical portion extending from the flange, The slinger may be mounted to the flange and the cylindrical portion.

The outer ring may be fitted with a seam member which faces the slinger and blocks the inlet of the bearing space.

Wherein the slinger comprises a first extension extending radially in close contact with a flange of the wheel hub, a second extension extending in the axial direction and press-fitted into the outer periphery of the cylindrical portion of the wheel hub, And a blocking portion extending axially inwardly from the radially outer proximal end of the first extension portion and blocking a portion of the inlet of the bearing space, ; The fixing member may include a polygonal fixed body which is in close contact with the inclined portion and the second extended portion of the slinger, and the fixing protrusions protruding radially inward from the fixed body.

The at least one fixing protrusion may be inserted and protruded through a through hole formed in the second extended portion of the slinger.

A plurality of rolling elements may be inserted into the bearing space such that the wheel hub rotates relative to the outer ring.

The seed part material includes a support member mounted on the outer ring, and a seal fixedly attached to the support member; Wherein the support member includes a cylindrical portion into which the outer circumferential surface of the outer ring is press-fitted, and a support portion formed to extend in a radially inward direction from the axially outward end portion of the cylindrical portion in a multi- Wherein the seal includes a root attached to the cylindrical portion and a support portion respectively, a first and second seal lip extending axially outwardly from the root to block the inlet of the bearing space, and radially inwardly extending from the root And a third seal lip which is in close contact with the second extension of the slinger; Wherein the first sealing lip is formed to extend radially outwardly of the blocking portion of the slinger and extend axially inwardly to overlap with the blocking portion to block the inlet of the bearing space, The lip may be formed in close contact with the first extension of the slinger.

The fixing member may be made of reinforced plastic.

According to the wheel bearing according to the embodiment of the present invention, the fixing member is mounted on the slinger, each of the fixing members includes fixing protrusions protruding through the inner circumferential surface of the slinger, The fixing projections of the fixing member are inserted into and engaged with the fixing grooves of the wheel hub, so that the fixing projections of the fixing member and the wheel hubs, as well as the pressing force of the pressing member, between the slinger and the wheel hub, The slinger can stably maintain the posture in which the slinger is stably mounted on the outer circumferential surface of the wheel hub, thereby effectively preventing the intrusion of foreign substances into the wheel bearing through the slinger.

In addition, as the slinger maintains the stable mounting posture, the sealing performance of the seam part closely adhered to the slinger is improved, thereby preventing the performance of the wheel bearing from being deteriorated due to intrusion of foreign matter.

In addition, even when an external load is applied to the wheel bearing, the slinger can be prevented from flowing due to the mutual restraint of the fixing protrusion of the fixing member and the fixing groove of the wheel hub, thereby improving the performance of preventing the entry of foreign materials into the wheel bearing. It is possible to improve the performance and extend the service life.

1 is a partial cross-sectional view of a wheel bearing according to the prior art.
FIG. 2 is a perspective view of a combination of a slinger and a fixing member according to an embodiment of the present invention.
3 is a partial cross-sectional view of a wheel bearing according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, a wheel bearing according to an embodiment of the present invention includes an outer ring 110, a wheel hub 120, a plurality of wheels installed in a bearing space formed between the wheel hub 120 and the outer ring 110, And a seal member 150 and a slinger 140 sealing and sealing the entrance of the bearing space, respectively.

The wheel hub 120 includes a cylindrical portion 122. The outer wheel 110 is formed to be larger than the outer diameter of the cylindrical portion 122 of the wheel hub 120 so that the cylindrical portion 122 of the wheel hub 120 And is inserted and supported in the axial direction.

The wheel hub 120 is fitted to the outer ring 110 and is supported to be rotatable relative to the outer ring 110 via the plurality of rolling elements 130. The outer ring 110 is fixedly connected to a vehicle body or knuckle.

The wheel hub 120 includes a flange 124 extending radially outwardly from the cylindrical portion 122 and an unillustrated hub bolt through the flange 124 is fastened to the wheel to support the wheel rotatably .

The plurality of rolling elements 130 are ball-shaped and arranged in a plurality of circumferential directions, and are arranged in an annular shape or a double row along the axial direction so that relative rotation can be established between the outer ring 110 and the wheel hub 120 do.

A bearing space extending in an axial direction and a radial direction is formed between the outer ring 110 and the wheel hub 120 for smooth relative rotation of the wheel hub 120 with respect to the outer ring 110, A slinger 140 and a seal member 150 are seated to seal the inlet of the bearing space 160 to prevent intrusion of the same foreign matter.

The inlet of the bearing space 160 is formed between the flange 124 of the wheel hub 120 and the axially outer end face 112 of the outer ring 110 opposite thereto and the slinger 140 has a bearing space 160 The seal member 150 is also mounted on the flange 124 of the wheel hub 120 forming the inlet of the bearing member 160 and the cylindrical portion 122 connected thereto to block part of the inlet of the bearing space 160, (112) of the bearing housing (110) to block the rest of the inlet of the bearing space (160).

The slinger 140 is generally formed into a ring shape and may be formed of a metal material.

The slinger 140 includes a first extended portion 142 which is in contact with the flange 124 of the wheel hub 120 and extends in the radial direction and an outer peripheral surface of the cylindrical portion 122 of the wheel hub 120 is press- An axially extending second extension 144, an angled portion 146 that connects the first and second extensions and is axially and radially inclined, and a radially outer portion 144 of the first extension 142 And a blocking portion 148 that extends axially inwardly from the leading end and blocks a portion of the inlet of the bearing space 160. [

The fixing member 170 may be coupled to the slinger 140. The fixing member 170 may be formed in a ring shape.

The fixing member 170 includes a fixed body 172 having a generally polygonal shape and closely adhered to the inclined portion 146 and the second extended portion 144 of the slinger 140, Respectively, as shown in FIG.

The fixing protrusions 174 may be formed at one or more positions at predetermined intervals along the circumferential direction.

Although not shown in the drawing, the fixing member may be formed in a block shape other than a ring shape, and may be coupled to the slinger 140 in a state where one or more fixing members are disposed at predetermined intervals along the circumferential direction.

The fixing member 170 may be made of a material different from the slinger 140, for example, reinforced plastic.

A through hole may be formed in the second extended portion 144 of the slinger 140 so that the fixing protrusion 174 of the fixing member 170 penetrates.

The fixing protrusion 174 may be inserted through the through hole of the slinger 140 and have a sufficient length to project radially inward from the slinger 140. [

One or more fixing grooves 126 may be formed in the cylindrical portion 122 of the wheel hub 120 in correspondence with the number of the fixing protrusions 174. [

The fixing groove 126 may be formed to be radially inwardly grasped from the outer circumferential surface of the cylindrical portion 122. The fixing protrusions 174 and the fixing grooves 126 may be formed in various shapes such that they are mutually coalesced.

The seal member 150 includes a support member 152 having a suitable rigidity and a seal fixedly attached to the support member 152, respectively.

The support member 152 has a cylindrical portion 152a into which the outer circumferential surface of the outer ring 110 is press-fitted and a support portion 152b formed so as to be bent in multiple stages radially inwardly from the axially outer end portion of the cylindrical portion 152a Respectively.

The seal includes a root 154a which is respectively attached to the cylindrical portion 152a and the support portion 152b and first and second sealing portions 154b which extend axially outward from the root 154a to block the inlet of the bearing space 160, Lips 154b and 154c and a third seal lip 154d extending radially inwardly from the root 154a and coming in tight contact with the second extension 144 of the slinger 140. [

The first sealing lip 154b is formed to extend radially outwardly of the blocking portion 148 of the slinger 140 and extend axially inward so that the inlet of the bearing space 160 together with the blocking portion 148 And the second sealing lip 154c is formed to be in close contact with the first extension 142 of the slinger 140. [

The first seal lip 154b and the second seal lip 154c respectively serve to prevent foreign matter from entering into the bearing space 160 while the third seal lip 154d serves to prevent foreign matter from entering into the bearing space 160. [ It mainly serves to prevent leakage of lubricating oil filled inside.

As described above, when the slinger 140 is fitted to the outer circumferential surface of the wheel hub with the fixing member 170 engaged with the slinger 140, at least one fixing protrusion 174 of the fixing member 170 is engaged with the wheel hub The slinger 140 and the wheel hub 120 are coupled to each other by the interlocking structure of the fixing protrusion 174 and the fixing groove 126 in addition to the force for pressing force between the slinger 140 and the wheel hub 120, So that the intrusion of foreign matter into the wheel bearing can be effectively prevented through the slinger 140. [0050] As shown in FIG.

Also, since the slinger 140 maintains a stable mounting posture, the sealing performance of the seal member 150 that is in close contact with the slinger 140 is improved, thereby preventing the performance of the wheel bearing from being deteriorated due to intrusion of foreign matter.

The slinger 140 is prevented from flowing due to mutual constraint between the fixing protrusions 174 of the fixing member 170 and the fixing grooves 126 of the wheel hub 120 even when an external load acts on the wheel bearings, It is possible to improve the performance of the wheel bearing and to prolong the life of the wheel bearing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Various modifications and variations are possible within the scope of the appended claims.

110: outer ring
120: Wheel hub
126: Fixing groove
130: rolling body
140: Slinger
150: Seal member
160: Bearing space
170: Fixing member
172: Fixed body
174: Fixing projection

Claims (14)

A slinger mounted on a wheel hub; And
A fixing member coupled to the slinger,
Wherein:
A fixed body that is seated on the slinger on the opposite side of the wheel hub relative to the slinger and is supported and fixed by the slinger; And
The slinger is formed to protrude radially inward from the fixed body and is inserted into a fixing groove formed in the wheel hub through a through hole formed in the slinger to prevent the slinger from being detached from the wheel hub in an axial direction A wheel bearing comprising a locking protrusion. The method according to claim 1,
Wherein the slinger and the fixing member are formed in a ring shape. 3. The method of claim 2,
Wherein the fixing member includes at least one fixing protrusion;
And the fixing groove of the wheel hub is formed so that the at least one fixing protrusion is inserted and engaged. The method of claim 3,
Wherein the at least one fixing protrusion is disposed at a predetermined interval along the circumferential direction of the ring. The method according to claim 1,
Wherein the fixing member is formed in a block shape and is coupled to the slinger in at least one number. 6. The method of claim 5,
The slinger being formed in a ring shape;
Wherein the at least one holding member is disposed at a predetermined interval along the circumferential direction of the ring shape. The method according to claim 6,
Wherein the at least one holding member includes a fixing protrusion, respectively;
Wherein the fixing groove of the wheel hub is formed such that the fixing protrusions are inserted and engaged with each other. The method according to claim 1,
The wheel hub being engaged with the outer ring and relatively rotatably engaged;
A radially and axially extending bearing space is formed between the wheel hub and the outer ring;
The wheel hub comprising a flange defining an inlet of the bearing space and a cylindrical portion extending from the flange,
Wherein the slinger is mounted to the flange and the cylindrical portion. 9. The method of claim 8,
And a seam member which is opposite to the slinger and blocks an inlet of the bearing space is mounted on the outer ring. 10. The method of claim 9,
Wherein the slinger comprises a first extension extending radially in close contact with a flange of the wheel hub, a second extension extending in the axial direction and press-fitted into the outer periphery of the cylindrical portion of the wheel hub, And a blocking portion extending axially inwardly from the radially outer proximal end of the first extension portion and blocking a portion of the inlet of the bearing space, ;
Wherein the fixed body is formed to have a polygonal shape in close contact with an inclined portion and a second extended portion of the slinger. 11. The method of claim 10,
And the through-hole is formed in the second extension of the slinger. 12. The method of claim 11,
Wherein a plurality of rolling elements are inserted in the bearing space such that the wheel hub is relatively rotated relative to the outer ring. 13. The method of claim 12,
The seed part material includes a support member mounted on the outer ring, and a seal fixedly attached to the support member;
Wherein the support member includes a cylindrical portion into which the outer circumferential surface of the outer ring is press-fitted, and a support portion formed to extend in a radially inward direction from the axially outward end portion of the cylindrical portion in a multi-
Wherein the seal includes a root attached to the cylindrical portion and a support portion respectively, a first and second seal lip extending axially outwardly from the root to block the inlet of the bearing space, and radially inwardly extending from the root And a third seal lip which is in close contact with the second extension of the slinger;
Wherein the first sealing lip is formed to extend radially outwardly of the blocking portion of the slinger and extend axially inwardly to overlap with the blocking portion to block the inlet of the bearing space, Wherein the lip is configured to come into close contact with the first extension of the slinger. The method according to claim 1,
Wherein the fixing member is made of reinforced plastic.

KR1020150143586A 2015-10-14 2015-10-14 Wheel bearing KR101779787B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150143586A KR101779787B1 (en) 2015-10-14 2015-10-14 Wheel bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150143586A KR101779787B1 (en) 2015-10-14 2015-10-14 Wheel bearing

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KR20170043918A KR20170043918A (en) 2017-04-24
KR101779787B1 true KR101779787B1 (en) 2017-09-19

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102119633B1 (en) * 2018-08-21 2020-06-08 (주)진양오일씰 Encoder Sealing Assembly in hub bearings for vehicle
KR102525228B1 (en) * 2018-12-14 2023-04-25 주식회사 일진글로벌 Wheel bearing assembly
CN112196903A (en) * 2020-09-01 2021-01-08 浙江万向精工有限公司 Box-type hub bearing unit outer sealing structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008281170A (en) * 2007-05-14 2008-11-20 Jtekt Corp Oil seal and rolling bearing unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008281170A (en) * 2007-05-14 2008-11-20 Jtekt Corp Oil seal and rolling bearing unit

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