JP2010133482A5

JP2010133482A5 -

Info

Publication number: JP2010133482A5
Application number: JP2008309632A
Authority: JP
Filing date: 2008-12-04
Publication date: 2012-10-04

Description

上記課題を解決するために、本発明は、車両インナ側にて車体側部材に固定され内周部に複列の軌道面を有する非回転部材と、車両アウタ側にて車輪側部材に固定され外周部に複列の軌道面の一に対応する軌道面を有する回転部材と、回転部材の車両インナ側端に一体形成された円筒状の嵌め合い部に外嵌圧入され外周部に複列の軌道面の他に対応する軌道面を有する内輪と、回転部材及び内輪の軌道面と非回転部材の軌道面との間にそれぞれ配置される転動体とを備えた転がり軸受装置であって、回転部材には、非回転部材の中心軸線と同軸のスプライン穴が形成されるとともに、内輪が押し当てられる肩面を有する段部が形成され、スプライン穴は、嵌め合い部の内周部の中間部位が車両インナ側におけるスプライン加工開始位置とされ、嵌め合い部は、スプライン加工開始位置から回転部材の段部の肩面に至る、円筒状の外周面を有する基端側部位と、スプライン加工開始位置から嵌め合い部の先端に至る、円筒状の外周面を有する先端側部位とを備え、内輪が嵌め合い部に外嵌圧入される前の回転部材の単体状態において、基端側部位の外周面の外径が先端側部位の外周面の外径に比して小さく形成されていることを特徴とする。この場合、例えば、内輪に対する嵌め合い部の基端側部位での締め代が１０〜２０μｍに設定され、内輪に対する嵌め合い部の先端側部位での締め代が５０〜７０μｍに設定されていると好適である。 In order to solve the above-mentioned problems, the present invention is fixed to a vehicle body side member on the vehicle inner side and a non-rotating member having a double-row track surface on the inner periphery, and to a wheel side member on the vehicle outer side. A rotating member having a raceway surface corresponding to one of the double-row raceway surfaces on the outer peripheral portion and a cylindrical fitting portion integrally formed on the vehicle inner side end of the rotating member are press-fitted into the outer peripheral portion. an inner ring having a raceway surface corresponding to the other raceway surface, a rolling bearing device provided with rolling elements which are arranged between the raceway surface of the rotary member and the inner ring raceway surface and the non-rotating member, The member is formed with a spline hole that is coaxial with the central axis of the non-rotating member and a step portion having a shoulder surface against which the inner ring is pressed. The spline hole is an intermediate portion of the inner peripheral portion of the fitting portion. Is the spline machining start position on the vehicle inner side. The fitting part is a cylindrical part extending from the spline processing start position to the shoulder surface of the stepped portion of the rotating member and having a cylindrical outer peripheral surface, and from the spline processing start position to the tip of the fitting part. and a distal end portion having an outer peripheral surface, in a single state before rotating member inner ring is fitted pressed into each other part fitted, the outer diameter of the outer peripheral surface of the proximal end side portion is above end portion of the outer peripheral surface It is characterized by being formed smaller than the outer diameter. In this case, for example, the tightening allowance at the proximal end portion of the fitting portion with respect to the inner ring is set to 10 to 20 μm, and the tightening allowance at the distal end portion of the fitting portion with respect to the inner ring is set to 50 to 70 μm. Is preferred.

Claims

A non-rotating member that is fixed to the vehicle body side member on the vehicle inner side and has a double row raceway surface on the inner peripheral portion, and a non-rotating member that is fixed to the wheel side member on the vehicle outer side and is one of the double row raceway surfaces on the outer peripheral portion. Rotating member having a corresponding raceway surface, and a raceway surface corresponding to the outer peripheral portion of the rotary member, which is press-fitted into a cylindrical fitting portion integrally formed on the vehicle inner side end, in addition to the double-row raceway surface. A rolling bearing device comprising: an inner ring having: a rolling element disposed between the rotating member and the raceway surface of the inner ring and the raceway surface of the non-rotating member;
A spline hole coaxial with the central axis of the non-rotating member is formed in the rotating member, and a step portion having a shoulder surface against which the inner ring is pressed is formed.
In the spline hole, an intermediate portion of the inner peripheral portion of the fitting portion is a spline processing start position on the vehicle inner side,
The fitting portion includes a proximal end portion having a cylindrical outer peripheral surface extending from the spline processing start position to the shoulder surface of the step portion of the rotating member, and the spline processing start position to the distal end of the fitting portion. A leading end side portion having a cylindrical outer peripheral surface,
The ratio on the outer diameter of said at single state of said rotary member before the inner ring is fitted pressed into portion fitting the outer peripheral surface of the outer diameter of the outer peripheral surface of the front Kimoto end site before Kisaki end portion The rolling bearing device is characterized in that it is formed small.