Wheel bearing device

• US 7,465,233 B2
• Filed: 04/25/2007
• Issued: 12/16/2008
• Est. Priority Date: 09/20/2000
• Status: Expired due to Fees

• Current Assignee: NTN Corporation
• Original Assignee: NTN Corporation
• Inventors: Suzuki, Syougo, Ohtsuki, Hisashi, Umekida, Mitsuru, Fukushima, Shigeaki, Sera, Akira, Torii, Akira, Tajima, Eiji, Ogura, Hiroyuki
• Primary Examiner(s): Dunwoody; Aaron M
• Application Number:
  US11/790,336
• Publication Number:
  US 20070219003A1
• Time in Patent Office: 601 Days
• Field of Search: 384/544, 384/537, 464/178, 298/943.61
• US Class Current: 464/178
• CPC Class Codes: B60B 27/00 Hubs non-metallic B60B5/00; of high resiliency B60B9/00
• CPC Class Codes: B60B 27/0005 with ball bearings
• CPC Class Codes: B60B 27/001 with roller-bearings
• CPC Class Codes: B60B 27/0026 of the radial type, e.g. splined key
• CPC Class Codes: B60B 27/0036 comprising homokinetic joints
• CPC Class Codes: B60B 27/0042 characterised by the fixation of the homokinetic joint to the hub
• 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: F16C 19/186 with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
• CPC Class Codes: F16C 19/187 with all four raceways integrated on parts other than race rings, e.g. fourth generation hubs
• CPC Class Codes: F16C 19/505 with the diameter of the rolling elements of one row differing from the diameter of those of another row
• CPC Class Codes: F16C 2240/80 Pitch circle diameters [PCD]
• CPC Class Codes: F16C 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 35/0635 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
• CPC Class Codes: F16C 43/04 Assembling rolling-contact bearings
• CPC Class Codes: F16D 1/072 involving plastic deformation plastic welding F16D1/068
• CPC Class Codes: F16D 2003/2232 Elements arranged in the hollow space between the end of the inner shaft and the outer joint member
• CPC Class Codes: F16D 2003/22326 Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
• CPC Class Codes: F16D 2300/10 Surface characteristics; Details related to material surfaces
• CPC Class Codes: F16D 3/223 the rolling members being guided in grooves in both coupling parts
• CPC Class Codes: Y10S 464/905 : Torque transmitted via radially extending pin
• CPC Class Codes: Y10S 464/906 : Torque transmitted via radially spaced balls
• CPC Class Codes: Y10T 29/49535 : with assembling

Abstract

A wheel bearing device includes a hub ring, a double-row bearing and a constant velocity universal joint which are unitized together. At least one of double-row inner raceways of the bearing and a wheel mounting flange are formed on a hub ring. The hub ring and a stem portion of a joint outer ring of the constant velocity universal joint are fitted through a torque transmission assembly, wherein a pilot member as a separate element having a wheel guide portion and a brake guide portion is fitted to a side-end portion of the wheel mounting flange of the hub ring, and the hub ring and the pilot member are fixed to the joint outer ring by swaging.

Claims

1. A wheel bearing device comprising:

a hub ring,

a constant velocity universal joint and a double-row bearing which are unitized together, at least one of double-row inner raceways of the bearing and a wheel mounting flange being formed on the hub ring, and

a stem portion of a joint outer ring of the constant velocity universal joint being fitted into the hub ring through torque transmission means,

wherein a pilot member as a separate element having a wheel guide portion and a brake guide portion is press-fitted to a side-end portion of the wheel mounting flange of the hub ring, and the hub ring and the pilot member are fixed to the joint outer ring by swaging.

2. The wheel bearing device according to claim 1, wherein the other inner raceway of the double-row inner raceways of the bearing is formed directly on the joint outer ring of the constant velocity universal joint.

3. The wheel bearing device according to claim 1, wherein the hub ring and the pilot member are unitized by swaging an axial end of the joint outer ring to the pilot member.

4. The wheel bearing device comprising:

a hub ring,

a constant velocity universal joint and a double-row bearing which are unitized together, at least one of double-row inner raceways of the bearing and a wheel mounting flange being formed on the hub ring, and

a stem portion of a joint outer ring of the constant velocity universal joint being fitted into the hub ring through torque transmission means,

wherein a pilot member as a separate element having a wheel guide portion and a brake guide portion is fitted to a side-end portion of the wheel mounting flange of the hub ring, and the hub ring and the pilot member are fixed to the joint outer ring by swaging, and

wherein a seal member is provided on a contact surface between the hub ring and the pilot member.