KR101411617B1 - Wheel bearing having hub and inner ring - Google Patents

Wheel bearing having hub and inner ring Download PDF

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Publication number
KR101411617B1
KR101411617B1 KR1020120090222A KR20120090222A KR101411617B1 KR 101411617 B1 KR101411617 B1 KR 101411617B1 KR 1020120090222 A KR1020120090222 A KR 1020120090222A KR 20120090222 A KR20120090222 A KR 20120090222A KR 101411617 B1 KR101411617 B1 KR 101411617B1
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KR
South Korea
Prior art keywords
hub
inner ring
spline
coupling portion
wheel bearing
Prior art date
Application number
KR1020120090222A
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Korean (ko)
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KR20140023776A (en
Inventor
금동호
Original Assignee
주식회사 일진글로벌
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Priority to KR1020120090222A priority Critical patent/KR101411617B1/en
Publication of KR20140023776A publication Critical patent/KR20140023776A/en
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Publication of KR101411617B1 publication Critical patent/KR101411617B1/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
    • 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
    • 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
    • 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
    • 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 having a hub and an inner ring according to an embodiment of the present invention includes a hub disposed to rotate, an inner ring coupled to the hub, an outer ring disposed at a predetermined distance from an outer peripheral surface of the inner ring, And a fastening portion which is fastened to an inner side end portion of the hub and the inner ring of the inner ring and rotates together with the hub and the inner ring, wherein an inner ring spline and a hub spline are respectively formed at an inner side end portion of the inner ring and the hub And a coupling part spline which is engaged with the inner ring spline and the hub spline may be formed in the coupling part. The hub spline and the inner race spline may be formed along an inclined line whose length from the rotation axis is long inward from the outside of the vehicle body.
Therefore, the wheel bearing having the hub and the inner ring according to the embodiment of the present invention can reduce the overall weight by forming the hub spline and the inner ring spline on the hub and the inner ring, respectively. The coupling part spline is splined to the hub spline and the inner ring spline to prevent the inner ring from rotating in the hub, thereby minimizing the creep. In addition, the torque transmission efficiency can be improved by dispersing and transmitting the rotational force of the coupling portion to the hub and the inner ring at the same time.

Figure R1020120090222

Description

[0001] WHEEL BEARING HAVING HUB AND INNER RING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel bearing having a hub and an inner ring for effectively transmitting the rotational force of a constant velocity joint to a wheel bearing using a hub connected to the wheel and an inner ring mounted thereon and firmly fixing the inner ring to the hub.

Wheel bearings and constant velocity joints in the axle of a car are power transmission devices for transmitting the power generated by the engine to wheels.

Among them, the wheel bearing minimizes the friction loss when the wheel is fixed and rotated, so that the wheel is smoothly rotated, and the constant velocity joint can transmit the power without fluctuating the rotational speed in the power transmission between the shafts.

The wheel bearing is composed of an outer ring connected to the vehicle body, and a hub provided on the inner side of the outer ring and having a rolling member interposed between the outer peripheral surface and the outer ring. Here, the outer end of the hub is connected to the wheel, and the rolling members are arranged in a double row to maintain smooth rotation and rigidity against the load of the vehicle body.

In addition, the hub is configured to be able to adjust a preload applied to the rolling member by being coupled with the inner ring to support the rolling member.

The constant velocity joint is constituted by a housing coupled to the hub, an inner ring installed inside the housing and receiving a rotational force from the constant velocity shaft, and a ball for transmitting a uniform rotational speed between the housing and the inner ring.

On the other hand, a structure and a manufacturing method capable of reducing the weight, more firmly supporting the inner ring coupled to the hub, and improving the power transmission efficiency are improved by improving the connection structure between the hub bearing and the constant velocity joint.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to improve the efficiency of transmission of power by improving the structure in which the hub and the inner ring are connected to the constant velocity joint and to reduce the weight, Thereby providing a bearing.

A wheel bearing having a hub and an inner ring according to an embodiment of the present invention includes a hub disposed to rotate, an inner ring coupled to the hub, an outer ring disposed at a predetermined distance from an outer peripheral surface of the inner ring, And a fastening portion which is fastened to an inner side end portion of the hub and the inner ring of the inner ring and rotates together with the hub and the inner ring, wherein an inner ring spline and a hub spline are respectively formed at an inner side end portion of the inner ring and the hub And a coupling part spline which is engaged with the inner ring spline and the hub spline may be formed in the coupling part.

The hub spline and the inner race spline may be formed along an inclined line whose length from the rotation axis is long inward from the outside of the vehicle body.

The hub spline and the inner ring spline can be formed at the same time along the tilted line while the inner ring is fixed to the hub.

And the inner ring can be press-fitted into the outer peripheral surface of the hub and fixed.

The hub spline and the inner ring spline may be formed in the circumferential direction thereof.

The tilted line may be part of a straight, concave, or convex curve.

And a constant velocity joint connected to the coupling portion, wherein the constant velocity joint is integrally connected to the coupling portion; An inner ring disposed inside the housing, and a joint ball disposed between the housing and the inner ring.

And a hub bolt arranged to penetrate the hub and the center portion of the coupling portion and fixing the coupling portion to the hub and the inner ring.

The fastening portion is formed with an insertion portion inserted into the hole formed in the center portion of the hub, and the hub bolt is inserted into the center portion of the insertion portion and can be screwed.

As described above, in the wheel bearing having the hub and the inner ring according to the embodiment of the present invention, the drive shaft can be eliminated by forming the hub spline and the inner ring spline on the hub and the inner ring respectively and spline coupling with the housing of the constant velocity joint. Therefore, the overall weight can be reduced.

The hub spline and the inner ring spline are simultaneously spline-coupled to the inner ring spline, thereby preventing the inner ring from rotating in the hub, thereby minimizing the creep.

Further, the torque transmission efficiency can be improved by dispersing and transmitting the rotational force of the coupling portion to the hub and the inner ring.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a whole sectional view of a wheel bearing with a hub and an inner ring according to an embodiment of the present invention.
2 is a partially exploded cross-sectional view of a wheel bearing having a hub and an inner ring according to an embodiment of the present invention.
3 is a partial detailed sectional view of a wheel bearing having a hub and an inner ring according to an embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a hub bearing according to an embodiment of the present invention.
5 is a partially exploded cross-sectional view of a wheel bearing having a hub and an inner ring according to another embodiment of the present invention.
6 is a partially exploded cross-sectional view of a wheel bearing having a hub and an inner ring according to another embodiment of the present invention.

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

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a whole sectional view of a wheel bearing with a hub and an inner ring according to an embodiment of the present invention.

1, the hub bearing includes a hub bolt 180, a hub 170, an inner ring 160, a rolling member 105, an outer ring 125, and a sealing member 127, A wheel (not shown) and a brake disc (not shown) are attached to the hub flange formed on the outer circumferential surface of the wheel bolt 100.

The outer ring 125 is connected to one side of a vehicle body (not shown) through an outer ring flange 110 formed on the outer peripheral surface thereof.

The coupling portion 130 for transmitting the rotational force from the constant velocity joint 135 to the hub 170 and the inner ring 160 is formed on the outer circumferential surface of the hub 170 on the vehicle body side, And is fastened to the hub 170 and the inner ring 160.

A rolling member 105 is interposed between the hub 170 and the outer ring 125 and between the inner ring 160 and the outer ring 125. The sealing member 127 is fixed to the rolling member 105, A sealing member 127 (not shown) is interposed between the outer ring 125 and the inner ring 160 and between the hub 170 and the outer ring 125 to prevent leakage of grease filling the interior. ).

The hub bolt 180 is inserted through the hub hole 220 formed along the rotation axis 182 of the hub 170 and the insertion end of the hub bolt 180 is inserted into the rotation shaft 182 of the coupling portion 130. [ And is screwed into the bolt hole 225 which is formed along the through-hole. Accordingly, the coupling portion 130 is coupled to the hub 170 and the inner ring 160.

The constant velocity joint 135 includes a housing 140 formed integrally with the coupling portion 130, an inner ring 150 disposed at an inner central portion of the housing 140, (Not shown). The inner ring 150 receives rotational force from a constant velocity shaft (not shown).

Further, in the embodiment of the present invention, the spline coupling portion 155 is formed at a portion where the coupling portion 130, the hub 170, and the inner ring 160 face each other.

The spline coupler 155 is connected to the hub spline 205 formed on the hub 170 and the inner ring spline 200 formed on the inner ring 160 2) of the fastening part splines 210. The spline coupler 155 will be described in more detail with reference to FIG.

2 is a partially exploded cross-sectional view of a wheel bearing having a hub and an inner ring according to an embodiment of the present invention.

2, a hub hole 220 is formed along the rotation axis 182 of the hub 170 and a hub spline 205 is formed at an inner end of the hub 170 facing the coupling portion 130. [ Is formed along the circumference of the hub hole 220. [

In addition, the inner ring spline 200 is formed in a circumferential direction on the inner end surface of the inner ring 160 facing the coupling portion 130.

A bolt hole 225 is formed at the center of the coupling part 130 to receive the end of the hub bolt 180 and the coupling part spline 210 is connected to the hub spline 205 and the inner ring spline 200, Are formed at corresponding positions. Here, the coupling part splines 210 are also formed in the circumferential direction.

The hub 170 and the inner end of the inner ring 160 are splined together with the inner ring 160 fixed to the hub 170 by press-fitting the hub 170 into the hub spline 205 And the inner ring spline 200 can be formed at the same time.

3 is a partial detailed sectional view of a wheel bearing having a hub and an inner ring according to an embodiment of the present invention.

3, an imaginary extension line 300 parallel to the rotation axis 182 is formed along the inner circumferential surface of the hub hole 220 formed in the rotation axis 182 of the hub 170, and the extension line 300 And an inclined line 310 is formed at an angle (A °).

The inclined line 310 may be formed at an angle (90 ° -A °) with respect to the inner side end surface 340 of the inner ring 160.

In the embodiment of the present invention, the hub spline 205 and the inner ring spline 200 may be formed at the same time along the tilted line 310.

Particularly, the slanting line 310 is formed so as to be distanced from the hub 170 in the direction of the coupling part 130 from the rotation axis 182.

3, an insertion part 320 is formed adjacent to the rotation shaft 182 in the coupling part 130 and a bolt hole 225 is formed in the center part of the insertion part 320 along the rotation axis 182. [ .

In addition, a threaded portion 330 is formed on the inner circumferential surface of the bolt hole 225 to be screwed with the hub bolt 180.

The coupling part spline 210 is formed in the coupling part 130 adjacent to the inner ring 160 and the hub 170. The insertion part 320 is inserted into the hub hole 220, Section. This coupling part spline 210 is spline coupled with the hub spline 205 and the inner ring spline 200.

The inner ring end surface 340 of the inner ring 160 facing the coupling part 130 is in close contact with the joint end surface 350 formed on the outer side of the coupling part 130.

In the embodiment of the present invention, it will be described that the hub 170 is disposed outside the vehicle body (outside the vehicle body), and the constant velocity joint 135 is disposed inside the vehicle body (inside the vehicle body) And the rotation axis 182 may be regarded as a virtual axis for convenience of explanation.

4 is a flowchart illustrating a method of manufacturing a hub bearing according to an embodiment of the present invention.

In the embodiment of the present invention, S400, S410, and S420, which will be described later, are listed in order for explanation, and the order can be changed before and after the order, and two or more can be simultaneously performed.

Referring to FIG. 4, the inner ring 160 is fixed to the hub 170 (S400). Here, press fitting is exemplified as a method of fixing the inner ring 160 to the hub 170, but the present invention is not limited thereto.

Splines 200 and 205 are formed along the slant lines 310 formed on the inner surface of the hub 170 and the inner ring 160 at step S410.

The hub spline 205 and the inner ring spline 200 are simultaneously formed in a state where the inner ring 160 is assembled to the hub 170 as described above.

Next, a coupling part spline 210 is formed on the coupling part 130 (S420). In an embodiment of the present invention, a method of forming a spline in a hub, an inner ring, and a fastening portion is well known in the art.

The insertion portion 320 of the coupling portion 130 is then inserted into the hub hole 220 of the hub 170 and the hub spline 205 and the inner ring spline 200 are inserted into the coupling portion spline (210) so as to be fastened (S430)

At this time, the coupling part 130 is firmly fixed to the hub 170 and the inner ring 160 using the hub bolts 180, and the preload applied to the inner ring 160 and the hub 170 Can be adjusted.

FIG. 5 is a partially exploded cross-sectional view of a wheel bearing having a hub and an inner ring according to another embodiment of the present invention, and FIG. 6 is a partially exploded sectional view of a wheel bearing having a hub and an inner ring according to another embodiment of the present invention. Except for the parts described so far, the characteristic differences will be described in detail.

5, the hub spline 205 and the inner ring spline 200 are formed on the hub 170 and the inner ring 160 along a slant line of a concave shape.

In addition, a coupling part spline 210 having a convex shape is formed in the coupling part 130 corresponding to the concave sloping line.

Referring to FIG. 6, the hub spline 205 and the inner ring spline 200 are formed on the hub 170 and the inner ring 160 along a tilted line of a convex shape.

In addition, concave coupling part splines 210 are formed in the coupling part 130 corresponding to the inclined lines of the convex shape.

The overall weight can be reduced by forming the hub spline 205 and the inner ring spline 200 on the hub 170 and the inner ring 160 as described above. Can be prevented from rotating.

In addition, the torque transmission efficiency can be improved by dispersing and transmitting the rotational force of the coupling part 130 to the hub 170 and the inner ring 160 at the same time.

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.

100: wheel bolt 105: rolling member
110: outer ring flange 125: outer ring
127: sealing member 130:
135: constant velocity joint 140: housing
145: joint ball 150: inner ring
155: spline coupling portion 160: inner ring
170: hub 180: hub bolt
182: rotating shaft 200: inner ring spline
205: Hub spline 210: Coupling spline
220: hub hole 225: bolt hole
300: extension line 310: bevel line
320: insertion portion 330:
340: inner ring end face 350: joint end face

Claims (11)

A hub disposed to rotate about a rotational axis;
An inner ring fastened to the hub;
An outer ring disposed at a predetermined interval from an outer circumferential surface of the inner ring;
A rolling member interposed between the inner ring and the outer ring; And
A fastening portion fastened to an inner end of a vehicle body of the hub and the inner ring and rotated together with the hub and the inner ring; Lt; / RTI >
Wherein an inner ring spline and a hub spline are formed at an inner side end portion of the inner ring and the hub, respectively, and a coupling portion spline which is engaged with the inner ring spline and the hub spline is formed in the coupling portion,
And the hub spline and the inner ring spline,
Wherein the bearing is formed along an inclined line extending from the outside to the inside of the vehicle body from the rotational axis. delete delete The method of claim 1,
And the inner ring is press-fitted and fixed to the outer peripheral surface of the hub. The method of claim 1,
And the hub spline and the inner ring spline are formed in a circumferential direction thereof. The method of claim 1,
Wherein the one inclined line is a straight line. The method of claim 1,
Wherein the one inclined line is a part of a concave or a convex curve. The method of claim 1,
A constant velocity joint connected to the coupling portion; Further comprising:
The constant velocity joint
A housing integrally connected to the coupling portion; An inner ring disposed inside the housing; And a joint ball disposed between the housing and the inner ring; And the inner ring and the hub. The method of claim 1,
A hub bolt penetrating the center of the hub and the coupling portion and fixing the coupling portion to the hub and the inner ring; Wherein the wheel bearing has a hub and an inner ring. The method of claim 9,
Wherein the fastening portion is formed with an insertion portion inserted into a hole formed in a central portion of the hub,
Wherein the hub bolt is inserted into a center portion of the insertion portion and is screwed into the hub portion. A manufacturing method of a wheel bearing having a hub and an inner ring according to claim 1,
And a hub and an inner ring which form the hub spline and the inner ring spline along the one inclined line in a state in which the inner ring is press-fitted and fastened to the hub.
KR1020120090222A 2012-08-17 2012-08-17 Wheel bearing having hub and inner ring KR101411617B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120090222A KR101411617B1 (en) 2012-08-17 2012-08-17 Wheel bearing having hub and inner ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120090222A KR101411617B1 (en) 2012-08-17 2012-08-17 Wheel bearing having hub and inner ring

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KR20140023776A KR20140023776A (en) 2014-02-27
KR101411617B1 true KR101411617B1 (en) 2014-06-25

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KR1020120090222A KR101411617B1 (en) 2012-08-17 2012-08-17 Wheel bearing having hub and inner ring

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014208946A1 (en) * 2014-05-12 2015-11-12 Zf Friedrichshafen Ag Shaft, hub, shaft-hub connection, compressor, commercial vehicle as well as method of producing a shaft-hub connection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007508986A (en) 2003-10-24 2007-04-12 ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Joint outer part with support disk
JP2009234541A (en) 2008-03-28 2009-10-15 Jtekt Corp Wheel bearing assembly
JP2011168266A (en) * 2010-01-19 2011-09-01 Nsk Ltd Bearing unit for driving wheel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007508986A (en) 2003-10-24 2007-04-12 ゲー カー エヌ ドライブライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング Joint outer part with support disk
JP2009234541A (en) 2008-03-28 2009-10-15 Jtekt Corp Wheel bearing assembly
JP2011168266A (en) * 2010-01-19 2011-09-01 Nsk Ltd Bearing unit for driving wheel

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