WHEEL SUPPORT DEVICE

• US 20130229046A1
• Filed: 02/22/2013
• Published: 09/05/2013
• Est. Priority Date: 03/02/2012
• Status: Active Grant

• Current Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Original Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Inventors: HARADA, Katsuyuki, ANNO, Hiroshi
• Granted Patent: US 9,221,299 B2
• Time in Patent Office: Days
• US Class Current: 301/110
• 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 27/0031 of the axial type, e.g. front teeth
• 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: B60B 27/065 characterised by the fixation of the hub to the axle
• 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 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 33/586 outside the space between the races, e.g. end faces or bore of inner ring
• CPC Class Codes: F16C 35/063 Fixing them on the shaft with interposition of an element F16C35/07
• CPC Class Codes: F16D 1/076 by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
• 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

Abstract

A rotary ring of a hub unit has an annular first end face on one side in the axial direction, and an outer ring of a joint has an annular second end face on the other side in the axial direction. Outer splines are formed in a radially outer-side region of the first end face and outer splines are formed in a radially outer-side region of the second end face. The outer splines of the first end face and the outer splines of the second end face mesh with each other. Inner splines are formed in a radially inner-side region of the first end face and inner splines are formed in a radially inner-side region of the second end face. The inner splines of the first end face and the inner splines of the second end face mesh with each other.

Claims

1. A wheel support device, comprising:

a hub unit that includes a fixed ring that is fixed to a vehicle body-side member, a rotary ring to which a wheel is fitted, and rolling elements that are provided between the fixed ring and the rotary ring; and

a joint that is provided on one side of the hub unit in an axial direction, and that has a torque transmission ring that transmits rotary torque to the rotary ring, wherein

the rotary ring has an annular first end face on one side in the axial direction, and the torque transmission ring has an annular second end face on the other side in the axial direction,

outer splines are formed in a radially outer-side region of the first end face and outer splines are formed in a radially outer-side region of the second end face, and the outer splines of the first end face and the outer splines of the second end face mesh with each other, and

inner splines are formed in a radially inner-side region of the first end face and inner splines are formed in a radially inner-side region of the second end face, and the inner splines of the first end face and the inner splines of the second end face mesh with each other.

2. The wheel support device according to claim 1, wherein:

a tapered outer periphery of which a diameter increases toward the other side in the axial direction is formed in the radially outer-side region of the first end face;

a tapered inner periphery of which a diameter increases toward the other side in the axial direction and which faces the tapered outer periphery of the first end face is formed in the radially outer-side region of the second end face; and

the outer splines are formed in each of the tapered outer periphery of the first end face and the tapered inner periphery of the second end face.

3. The wheel support device according to claim 1, wherein:

the number of spline grooves of the inner splines is 1/n, where n is an integer, of the number of spline grooves of the outer splines; and

the spline grooves of the inner splines are arranged on extension lines that extend radially inward from the spline grooves of the outer splines.

4. The wheel support device according to claim 2, wherein:

the number of spline grooves of the inner splines is 1/n, where n is an integer, of the number of spline grooves of the outer splines; and

the spline grooves of the inner splines are arranged on extension lines that extend radially inward from the spline grooves of the outer splines.