KR101689839B1 - Wheel bearing and wheel bearing assembly using the same - Google Patents

Wheel bearing and wheel bearing assembly using the same Download PDF

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Publication number
KR101689839B1
KR101689839B1 KR1020140147705A KR20140147705A KR101689839B1 KR 101689839 B1 KR101689839 B1 KR 101689839B1 KR 1020140147705 A KR1020140147705 A KR 1020140147705A KR 20140147705 A KR20140147705 A KR 20140147705A KR 101689839 B1 KR101689839 B1 KR 101689839B1
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KR
South Korea
Prior art keywords
hub
inner ring
constant velocity
velocity joint
spline
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KR1020140147705A
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Korean (ko)
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KR20160049903A (en
Inventor
이지현
Original Assignee
주식회사 일진글로벌
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Priority to KR1020140147705A priority Critical patent/KR101689839B1/en
Publication of KR20160049903A publication Critical patent/KR20160049903A/en
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Publication of KR101689839B1 publication Critical patent/KR101689839B1/en

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    • 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
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheel bearing and a wheel bearing assembly using the same.
The wheel bearing according to the embodiment of the present invention has a cylindrical shape, a hub flange is formed radially outward at one end, a step is formed at the outer circumferential surface of the other end, and a hub orbital is formed between the hub flange and the step ; An inner ring mounted on a stepped portion of the hub, the inner ring having an inner ring raceway formed on an outer circumferential surface thereof, and a surface of the inner ring abutting on the hub; An outer ring that surrounds the hub and the inner ring so as to form a space between the hub and the inner ring and has first and second outer ring trajectories formed on an inner peripheral surface thereof corresponding to the hub trajectory and the inner ring trajectory; And a plurality of rolling elements slidably mounted between the hub orbit and the first outer ring raceway and between the inner ring raceway and the second outer ring raceway, wherein a constant velocity joint and a driving force are respectively applied to the other surfaces of the inner ring and the hub And a center bolt for coupling the constant velocity joint and the hub, allowing the constant velocity joint to apply a preload to the rolling elements, and for securing frictional engagement between the constant velocity joint and the inner ring and the hub. .

Description

WHEEL BEARING AND WHEEL BEARING ASSEMBLY USING THE SAME <br> <br> <br> Patents - stay tuned to the technology WHEEL BEARING AND WHEEL BEARING ASSEMBLY USING THE SAME

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel bearing and a wheel bearing assembly using the same, and more particularly, to a wheel bearing and a wheel bearing assembly using the same, which can reduce weight and improve fuel economy and drive force.

In general, 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 depending on the shape of rolling elements.

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.

A conventional wheel bearing assembly includes a hub that receives a driving force through a spindle of a constant velocity joint and transmits the driving force to a wheel, an inner ring provided on an outer circumferential surface of the hub, an outer ring surrounding the hub and the inner ring, And a plurality of rolling elements installed between the outer rings.

Such a wheel bearing assembly is configured such that the hub is spline (or serration) coupled with the spindle of the constant velocity joint to receive the driving force. That is, splines are formed in the axial direction on the inner peripheral surface of the hub and the outer peripheral surface of the spindle, and the inner peripheral surface of the hub and the outer peripheral surface of the spindle are spline coupled.

As described above, in the conventional wheel bearing assembly, since the spindle of the constant velocity joint is splined to the inner circumferential surface of the hub, the radius of the spline has to be small. In order to smoothly transmit the driving force, the coupling area between the splines of the hub and the spindle must be increased. Thus, in a conventional wheel bearing assembly having a small radius of the spline, the length of the spline naturally becomes long. Such an increase in the length of the spline necessarily increases the length of the spindle, thereby increasing the length and weight of the wheel bearing assembly.

In addition, in the conventional wheel bearing assembly, a preload is applied to the rolling member to improve the life. In the prior art, after pushing the inner ring into the stepped portion formed in the hub, one end of the hub is bent radially outward to fix the inner ring, and a preload is applied to the rolling element (this method is called 'orbital forming' forming ').

However, when a preload is applied to the wheel bearing by orbital forming, a strong pressure is applied to the inner ring on the radially outer side, which causes deformation. Further, since the orbital forming portion is positioned between the inner ring and the constant velocity joint, the constant velocity joint is moved away from the inner ring by the thickness of the orbital forming portion. This further increases the length of the spindle of the constant velocity joint.

Further, in the conventional wheel bearing assembly, since the radius of the spindle is small and it is difficult to form a sufficient number of splines, there is a clearance between the splines of the hub and the constant velocity joint. This causes a load , Rotational force, etc.) increase the clearance, thereby causing noise and defects.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hub and a constant velocity joint which are spline-coupled together, And to provide a wheel bearing assembly using the same.

It is another object of the present invention to provide a wheel bearing and a wheel bearing assembly using the wheel bearing which are easy to mass-produce by facilitating engagement of the hub and constant velocity joint.

Further, it is a further object of the present invention to provide a wheel bearing having improved durability and a wheel bearing assembly using the wheel bearing so that the preload can be easily and precisely adjusted.

In order to achieve the above object, a wheel bearing according to an embodiment of the present invention is cylindrical, a hub flange is formed radially outward at one end, a step is formed at an outer circumferential surface of the other end, A hub in which a hub orbit is formed; An inner ring mounted on a stepped portion of the hub, the inner ring having an inner ring raceway formed on an outer circumferential surface thereof, and a surface of the inner ring abutting on the hub; An outer ring that surrounds the hub and the inner ring so as to form a space between the hub and the inner ring and has first and second outer ring trajectories formed on an inner peripheral surface thereof corresponding to the hub trajectory and the inner ring trajectory; And a plurality of rolling elements slidably mounted between the hub orbit and the first outer ring raceway and between the inner ring raceway and the second outer ring raceway, wherein a constant velocity joint and a driving force are respectively applied to the other surfaces of the inner ring and the hub And a center bolt for coupling the constant velocity joint and the hub, allowing the constant velocity joint to apply a preload to the rolling elements, and for securing frictional engagement between the constant velocity joint and the inner ring and the hub. .

A center bolt hole for inserting the center bolt is formed in the inner circumferential surface of the hub, the diameter of the inner circumferential surface of the hub on the other side of the center bolt hole is larger than the diameter of the center bolt hole, A first spline may be formed.

A second spline may be formed on at least a part of the outer circumferential surface of the step portion and a third spline may be formed on at least a part of the inner circumferential surface of the inner ring to engage with the second spline.

According to another aspect of the present invention, there is provided a wheel bearing assembly having a cylindrical shape, wherein a hub flange is formed radially outward at one end portion, a stepped portion is formed at an outer circumferential surface of the other end portion, and a hub orbit is formed between the hub flange and the stepped portion A hub on which the friction material is attached; An inner ring mounted on a stepped portion of the hub, the inner ring having an inner ring raceway formed on an outer circumferential surface thereof, one surface abutting on the hub, and a friction material adhered on the other surface; An outer ring that surrounds the hub and the inner ring so as to form a space between the hub and the inner ring and has first and second outer ring trajectories formed on an inner peripheral surface thereof corresponding to the hub trajectory and the inner ring trajectory; A plurality of rolling elements slidably mounted between the hub orbit and the first outer ring raceway and between the inner ring raceway and the second outer ring raceway; A constant velocity joint for attaching a friction material frictionally engaged with the friction material of the hub and the friction material of the inner ring at the same time to transmit driving force to the hub and the inner ring; And a center bolt for coupling the constant velocity joint and the hub, allowing the constant velocity joint to apply a preload to the rolling elements, and for securing frictional engagement between the constant velocity joint and the inner ring and the hub.

A center bolt hole for inserting the center bolt is formed in the inner circumferential surface of the hub, the diameter of the inner circumferential surface of the hub on the other side of the center bolt hole is larger than the diameter of the center bolt hole, A first spline may be formed.

A second spline may be formed on at least a part of the outer circumferential surface of the step portion and a third spline may be formed on at least a part of the inner circumferential surface of the inner ring to engage with the second spline.

Wherein the constant velocity joint comprises: a protrusion formed to extend axially on one side of a central portion of one side of the constant velocity joint; And a fourth spline formed on at least a part of the outer circumferential surface of the projection and engaging with the first spline of the hub.

As described above, according to the present invention, the driving force of the constant velocity joint can be transmitted to the hub through the spline coupling of the hub and the constant velocity joint, and the driving force can be smoothly transmitted even if the length of the spline is reduced. Can be reduced.

Further, the driving force of the constant velocity joint transmitted to the inner ring through the friction material can be transmitted to the hub by spline coupling of the hub and the inner ring, thereby more smoothly transmitting the driving force.

In addition, since the total weight of the wheel bearing assembly is reduced, the fuel consumption is improved.

Also, instead of spline coupling the constant velocity joint to the hub and the inner ring, friction coupling is performed through the friction material to facilitate assembly. Therefore, the mass productivity is improved.

Furthermore, it is possible to control the preload applied to the rolling elements through the center bolt, and at the same time to secure the frictional engagement between the constant velocity joint and the hub and the inner ring.

1 is a cross-sectional view of a wheel bearing assembly according to an embodiment of the present invention.

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

1 is a cross-sectional view of a wheel bearing assembly according to an embodiment of the present invention.

For convenience of explanation, the axially closer side (left side in the drawing) to the wheel is referred to as "one side", "one side", "one side" and the like, ) Will be referred to as 'other side', 'other end', 'other end' and similar names.

1, a wheel bearing assembly according to an embodiment of the present invention includes a wheel bearing 1, a center bolt 70, and a constant velocity joint 80. As shown in FIG.

The wheel bearing 1 rotatably supports a wheel with respect to a vehicle body (for example, a knuckle), receives a driving force from the constant velocity joint 80, and transmits the driving force to the wheel.

The wheel bearing 1 includes a hub 10, an inner ring 30, an outer ring 40 and first and second rows of rolling elements 50 and 52.

The hub 10 is rotated by receiving a rotational force from the constant velocity joint 80 so that the other end of the hub 10 is coupled to one end of the constant velocity joint 80 so that power can be transmitted.

A hub flange 12 protrudes radially outward from one end of the hub 10 and a hub bolt hole 14 is formed in the hub flange 12 for coupling with the wheel. A wheel bolt (not shown) for engaging with the wheel may be press-fitted into the hub bolt hole 14. A pilot 16 protrudes axially on one side of the hub 10 to guide the wheel when the wheel is mounted.

A stepped portion 18 having a small radius is formed on the outer peripheral surface of the other end of the hub 10 and the inner ring 30 is press-fitted into the stepped portion 18. At this time, one surface of the inner ring 30 comes into contact with the stepped surface 29 defining the boundary of the stepped portion 18. A hub orbit 28 is formed between the hub flange 12 of the hub 10 and the stepped portion 18.

The hub 10 has a cylindrical shape and a center bolt hole 24 through which the center bolt 70 passes in the axial direction is formed on the inner circumferential surface. The center bolt hole 24 is formed on the other side and a first spline 22 is formed on the inner circumferential surface of the hub 10 on the other side of the center bolt hole 24. The diameter of the first spline (22) is larger than the diameter of the center bolt hole (24).

A second spline 26 is formed on at least a part of the outer peripheral surface of the step portion 18 of the hub 10. A friction material 19 is attached to the other surface of the hub 10 through the fixing means 92 . As the fixing means 92, any means capable of attaching the friction material 19 to the other surface of the hub 10 may be used. The second spline 26 makes the coupling between the inner ring 30 and the hub 10 strong so that power can be transmitted from the inner ring 30 to the hub 10. The friction material 19 is transmitted through the constant velocity joint 80, &lt; / RTI &gt;

The inner ring 30 is formed in a cylindrical shape and is press-fitted into the stepped portion 18 of the hub 10. A third spline 34 engaged with the second spline 26 is formed on at least a part of the inner circumferential surface of the inner ring 30. A friction member 36 is fixed to the other surface of the inner ring 30 by a fixing means 94 ). As the fixing means 94, any means capable of attaching the friction material 19 to the other surface of the hub 10 may be used. The power of the constant velocity joint 80 transmitted to the inner ring can be stably transmitted to the hub 10 by the second and third splines 26 and 34. The inner ring 30 is rotated by the friction material 36 Power can be delivered from the joint. An inner ring raceway (32) is formed on the outer peripheral surface of the inner ring (30).

The outer ring 40 is located outside the radius of the hub 10 and the inner ring 30 and surrounds the hub 10 and the inner ring 30. A space is formed between the outer ring 40 and the hub 10 and the inner ring 30 and the space is sealed by the first and second sealing members 60 and 62.

An outer ring flange 42 extends radially outward from the outer circumferential surface of the outer ring 40. An outer ring bolt hole (not shown) for mounting the outer ring 40 to the vehicle body is formed in the outer ring flange 42 in the axial direction .

A first outer ring raceway 44 corresponding to the hub raceway 28 and a second outer ring raceway 46 corresponding to the inner ring raceway 32 are formed on the inner peripheral surface of the outer ring 40. [

The first and second rows of rolling elements 50 and 52 are mounted between the hub 10 and the inner ring 30 and the outer ring 40. That is, the rolling elements 50 of the first row are slidably mounted between the hub orbit 28 and the first outer ring raceway 44, and the rolling elements 52 of the second row are mounted on the inner ring raceway 32 And a second outer ring raceway 46. The second outer ring raceway 46 is slidably mounted. Therefore, the first and second rows of rolling members 50 and 52 allow the hub 10 and / or the inner ring 30 to rotate relative to the outer ring 40. [

The first and second rows of rolling elements 50 and 52 are formed by inserting a plurality of rolling elements into the first and second retainers, which are typically made of a plastic material.

The center bolt 70 engages the constant velocity joint 80 and the hub 10 and the constant velocity joint 80 pushes the inner ring 30 to one side in the axial direction to move the rolling elements 50, Preload is applied. The center bolt 70 is formed by closely adhering one surface of the constant velocity joint 80 and the other surface of the hub 10 and the inner ring 30 to the constant velocity joint 80 and the hub 10 and the inner ring 30 So that the frictional engagement is strengthened. The center bolt 70 includes a bolt head and a bolt shaft similar to a conventional bolt, and a screw is formed on an outer circumferential surface of the bolt shaft. When the center bolt 70 is mounted, the head of the center bolt 70 is caught by one side of the inner circumference of the hub 10, and the shaft of the center bolt 70 is inserted into the center bolt hole 24, ). Thus, the constant velocity joint 80 and the hub 10 are engaged.

The constant velocity joint 80 is a member that transmits a driving force to the hub 10. [ At the center of one side of the constant velocity joint 80, a protrusion 82 and an insertion groove 84 are formed.

The projecting portion 82 extends axially on one side of the constant velocity joint 80. The protrusion 82 has a cylindrical shape, and a fourth spline 86 is formed at least on an outer circumferential surface of the protrusion 82 to be engaged with the first spline 22. Therefore, the diameter of the outer circumferential surface of the projecting portion 82 is substantially similar to the diameter of the inner circumferential surface of the first spline 22. The constant velocity joint 80 can transmit the driving force to the hub 10 by the spline coupling of the fourth spline 86 and the first spline 22. At this time, the constant velocity joint 80 can transmit the driving force to the hub 10 even by the friction materials 19, 36, 90, so that the length of the first and fourth splines 22, 86 The driving force can be smoothly transmitted. In addition, since the length of the fourth spline 86 is reduced, the length of the projecting portion 82 of the constant velocity joint 80 is reduced and the weight of the constant velocity joint 80 is reduced. Therefore, the total weight of the wheel bearing assembly is reduced, thereby improving fuel economy.

The insertion groove 84 is formed in the central portion of the projection 82 in the axial direction. The diameter of the insertion groove 84 is the same as the diameter of the center bolt hole 24 and is aligned in the axial direction with respect to each other. Accordingly, the center bolt 70 is simultaneously inserted into the center bolt hole 24 and the insertion groove 84, so that the hub 10 and the constant velocity joint 80 are engaged. At this time, the preload applied to the rolling elements (50, 52) can be adjusted by adjusting the tightening degree of the center bolt (70).

A friction member 90 corresponding to the friction member 19 of the hub 10 and the friction member 36 of the inner ring 30 is fixed to one side outer peripheral portion 88 of the constant velocity joint 80 by fastening means 92, Respectively. The friction material 90 of the constant velocity joint 80 is frictionally engaged with the friction material 19 of the hub 10 and the friction material 36 of the inner ring 30 so that the power of the constant velocity joint 80 is transmitted to the hub 10 To the inner ring (30). As the friction materials 19, 36 and 90, a friction material (that is, a friction material used for transmitting power) used in a conventional clutch can be used. On the other hand, since the hub 80 and the constant velocity joint 80 are coupled by the center bolt 70, the frictional coupling between the friction materials 19, 36, and 90 can be firmened by tightening the center bolt 70 strongly. Therefore, more stable power transmission becomes possible.

As described above, according to the embodiment of the present invention, the hub 10 and the constant velocity joint 80 are coupled so as to be able to transmit power not only by the spline coupling but also by the friction materials 19, 36 and 90, The length of the spline can be reduced compared to the wheel bearing assembly. Therefore, even if the lengths of the first and fourth splines 22 and 86 are reduced, the driving force can be smoothly transmitted from the constant velocity joint 80 to the hub 10, and the total weight of the wheel bearing assembly can be reduced.

The constant velocity joint 80 and the inner ring 30 are also joined by the friction materials 36 and 90 so that the power of the constant velocity joint 80 is transmitted to the inner ring 30 and the inner ring 30 and the hub 10 It is possible to stably transmit the power transmitted to the inner ring 30 to the hub 10 by coupling. Therefore, the driving force can be more smoothly transmitted from the constant velocity joint 80 to the hub 10. [

Further, since the hub 10 and the constant velocity joint 80 are connected to each other by the center bolt 70, the preload applied to the rolling elements 50 and 52 is controlled and the friction between the friction materials 19, The bonding can be made strong.

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.

Claims (7)

A hub in which a hub flange is formed radially outward at one end, a step is formed at an outer circumferential surface of the other end, and a hub orbit is formed between the hub flange and the step;
An inner ring mounted on a stepped portion of the hub, the inner ring having an inner ring raceway formed on an outer circumferential surface thereof, and a surface of the inner ring abutting on the hub;
An outer ring that surrounds the hub and the inner ring so as to form a space between the hub and the inner ring and has first and second outer ring trajectories formed on an inner peripheral surface thereof corresponding to the hub trajectory and the inner ring trajectory; And
A plurality of rolling elements slidably mounted between the hub orbit and the first outer ring raceway and between the inner ring raceway and the second outer ring raceway;
/ RTI &gt;
A friction material is attached to the other surface of the inner ring and the hub so as to receive a constant velocity joint and a driving force,
Further comprising a center bolt which engages the constant velocity joint and the hub, permits the constant velocity joint to apply a preload to the rolling elements, and to secure frictional engagement between the constant velocity joint and the inner ring and the hub,
A center bolt hole for inserting the center bolt is formed on an inner circumferential surface of the hub,
Wherein a diameter of an inner circumferential surface of the hub on the other side of the center bolt hole is larger than a diameter of the center bolt hole and a first spline for engagement with a constant velocity joint is formed. delete The method according to claim 1,
Wherein a second spline is formed on at least a part of an outer circumferential surface of the step portion and a third spline is formed on at least a part of an inner circumferential surface of the inner ring to engage with the second spline. A hub in which a hub flange is formed radially outward at one end, a step is formed at an outer circumferential surface of the other end, a hub orbit is formed between the hub flange and the step, and a friction material is attached to the other surface;
An inner ring mounted on a stepped portion of the hub, the inner ring having an inner ring raceway formed on an outer circumferential surface thereof, one surface abutting on the hub, and a friction material adhered on the other surface;
An outer ring that surrounds the hub and the inner ring so as to form a space between the hub and the inner ring and has first and second outer ring trajectories formed on an inner peripheral surface thereof corresponding to the hub trajectory and the inner ring trajectory;
A plurality of rolling elements slidably mounted between the hub orbit and the first outer ring raceway and between the inner ring raceway and the second outer ring raceway;
A constant velocity joint for attaching a friction material frictionally engaged with the friction material of the hub and the friction material of the inner ring at the same time to transmit driving force to the hub and the inner ring; And
A center bolt for coupling the constant velocity joint and the hub, allowing the constant velocity joint to apply a preload to the rolling elements, and for securing frictional engagement between the constant velocity joint and the inner ring and the hub;
/ RTI &gt;
A center bolt hole for inserting the center bolt is formed on an inner circumferential surface of the hub,
Wherein a diameter of an inner peripheral surface of the hub on the other side of the center bolt hole is larger than a diameter of the center bolt hole and a first spline is formed for engagement with a constant velocity joint. delete 5. The method of claim 4,
Wherein a second spline is formed on at least a part of the outer circumferential surface of the step portion and a third spline is formed on at least a part of the inner circumferential surface of the inner ring to engage with the second spline. 5. The method of claim 4,
The constant velocity joint
A protrusion formed to extend axially on one side in a central portion of the one side surface; And
And a fourth spline formed on at least a portion of an outer circumferential surface of the projection and engaging a first spline of the hub.
KR1020140147705A 2014-10-28 2014-10-28 Wheel bearing and wheel bearing assembly using the same KR101689839B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020140147705A KR101689839B1 (en) 2014-10-28 2014-10-28 Wheel bearing and wheel bearing assembly using the same

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KR101689839B1 true KR101689839B1 (en) 2016-12-26

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KR101960720B1 (en) * 2016-10-05 2019-07-17 주식회사 일진글로벌 Wheel bearing

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2008196665A (en) * 2007-02-15 2008-08-28 Jtekt Corp Wheel rolling bearing device

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Publication number Priority date Publication date Assignee Title
KR101338447B1 (en) * 2011-12-26 2013-12-10 주식회사 일진베어링 Connecting structure of wheel bearing
KR101454905B1 (en) * 2013-04-12 2014-10-27 주식회사 일진글로벌 Wheel bearing and wheel bearing assembly using the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008196665A (en) * 2007-02-15 2008-08-28 Jtekt Corp Wheel rolling bearing device

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