Axle assembly of wheel

• US 20080277999A1
• Filed: 07/25/2008
• Published: 11/13/2008
• Est. Priority Date: 02/28/2005
• Status: Abandoned Application

• Current Assignee: Il Jin Global Co., Ltd.
• Original Assignee: Il Jin Global Co., Ltd.
• Inventors: Lee, Hyung Joo, Song, Jae Myoung
• Application Number:
  US12/220,563
• Publication Number:
  US 20080277999A1
• Time in Patent Office: Days
• US Class Current: 301/132
• CPC Class Codes: B60B 27/0005 with ball bearings
• CPC Class Codes: B60B 27/0052 the element being a brake disc
• CPC Class Codes: B60B 27/0084 caulking to fix inner race
• CPC Class Codes: B60B 27/0094 one or more of the bearing races are formed by the hub
• CPC Class Codes: F16D 2065/1384 to wheel hub
• CPC Class Codes: F16D 2065/1388 to shaft or axle
• CPC Class Codes: F16D 65/12 Discs; Drums for disc brakes

Abstract

The present invention relates to an axle assembly of a wheel where a hub and a brake disk are integrally formed. An axle assembly of a wheel according to exemplary embodiments of the present invention may include: a wheel bearing assembly provided with a bearing inner shaft having a first inner raceway at an inner side thereof, an inner ring mounted at an outer side of the bearing inner shaft and having a second inner raceway, an outer ring having first and second outer raceways respectively corresponding to the first and second inner raceways and engaged to a knuckle, and bearings disposed between the first and second inner raceways and the first and second outer raceways; a hub for mounting the wheel, the hub being mounted at the outer side of the bearing inner shaft; and a brake disk integrally formed with the hub, wherein the bearing inner shaft is provided with a first stepped surface for mounting the inner ring and a second stepped surface for mounting the hub.

Claims

1. An axle assembly of a wheel comprising:

a wheel bearing assembly provided with a bearing inner shaft having a first inner raceway at an inner side thereof, an inner ring mounted at an outer side of the bearing inner shaft and having a second inner raceway, an outer ring having first and second outer raceways respectively corresponding to the first and second inner raceways and engaged to a knuckle, and bearings disposed between the first and second inner raceways and the first and second outer raceways;

a hub for mounting the wheel, the hub being mounted at the outer side of the bearing inner shaft; and

a brake disk integrally formed with the hub,

wherein the bearing inner shaft is provided with a first stepped surface for mounting the inner ring and a second stepped surface for mounting the hub.

2. The axle assembly of claim 1, wherein the first inner raceway and the first and second stepped surfaces are sequentially formed from the inner side to the outer side.

3. The axle assembly of claim 2, wherein a caulking portion bent radially outwardly in order to fix the hub and the inner ring is formed at the inner side end of the bearing inner shaft.

4. The axle assembly of claim 2, further comprising a drive shaft for transmitting driving torque,

wherein the bearing inner shaft is mounted on the drive shaft.

5. The axle assembly of claim 4, wherein a screw thread for mounting a nut is formed at the outer side of the drive shaft.

6. The axle assembly of claim 3, further comprising a drive shaft for transmitting driving torque,

wherein the bearing inner shaft is mounted on the drive shaft.

7. The axle assembly of claim 6, wherein a screw thread for mounting a nut is formed at the outer side of the drive shaft.

8. The axle assembly of claim 3, wherein the caulking portion is formed by forming or swaging.

9. The axle assembly of claim 2, wherein a screw thread for mounting an assembling bolt is formed at an interior circumference of the outer side of the bearing inner shaft.

10. The axle assembly of claim 1, wherein an contacting portion between the hub and the wheel bearing assembly is processed to be any one of non-circle, a polygon, and a spline, so as to prevent inter-skidding.