JP2005299764A5

JP2005299764A5 -

Info

Publication number: JP2005299764A5
Application number: JP2004115145A
Authority: JP
Filing date: 2004-04-09
Publication date: 2006-11-16

Claims

外周に懸架装置に取り付けるための車体取付フランジを一体に有し、内周に複列の外側転走面が形成された外方部材と、
一端部に車輪を取り付けるための車輪取付フランジを一体に有し、外周に軸方向に延びる円筒状の小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された少なくとも一つの内輪とからなり、外周に前記複列の外側転走面に対向する内側転走面が形成された内方部材と、
前記外方部材および内方部材のそれぞれの転走面間に転動自在に収容された複列の転動体と、
前記内輪に外嵌されたエンコーダと、このエンコーダに対向するように前記外方部材の端部に装着された円環状のセンサホルダと、
このセンサホルダに一体モールドされ、前記エンコーダに所定の径方向すきまを介して対峙する回転速度センサーと、を備えた回転速度検出装置付き車輪用軸受装置において、
前記エンコーダが円環状をなし、その円周方向に関する特性が交互にかつ等間隔に変化するように構成されると共に、このエンコーダのインボード側にシールが配設され、このシールが、前記センサホルダと内輪にそれぞれ装着され、互いに対向して配置された環状の第１および第２のシール板からなることを特徴とする回転速度検出装置付き車輪用軸受装置。 An outer member integrally having a vehicle body mounting flange for mounting to a suspension device on the outer periphery, and a double row outer rolling surface formed on the inner periphery;
A hub wheel integrally having a wheel mounting flange for mounting a wheel at one end and having a cylindrical small-diameter step portion extending in the axial direction on the outer periphery, and at least one press-fitted into the small-diameter step portion of the hub ring An inner member formed of two inner rings and having an inner rolling surface facing the outer rolling surface of the double row on the outer periphery;
A double row rolling element housed in a freely rolling manner between the rolling surfaces of the outer member and the inner member;
An encoder externally fitted to the inner ring, and an annular sensor holder attached to an end of the outer member so as to face the encoder;
In the wheel bearing device with a rotational speed detection device, which is integrally molded with the sensor holder and includes a rotational speed sensor facing the encoder via a predetermined radial clearance,
The encoder has an annular shape, and the characteristic in the circumferential direction changes alternately and at equal intervals, and a seal is disposed on the inboard side of the encoder. And a bearing device for a wheel with a rotational speed detecting device, comprising annular first and second sealing plates that are respectively attached to the inner ring and disposed opposite to each other.

前記センサホルダが、鋼板製の嵌合環と、この嵌合環に一体モールドされた保持部とからなると共に、前記嵌合環が、外方部材の外周に圧入される円筒状の嵌合部と、この嵌合部から径方向内方に延び、前記外方部材の端面に密着される鍔部と、この鍔部から軸方向に延びる円筒部とからなり、この円筒部に前記第１のシール板が内嵌されている請求項１に記載の回転速度検出装置付き車輪用軸受装置。 The sensor holder includes a steel-made fitting ring and a holding part integrally molded with the fitting ring, and the fitting ring is press-fitted into the outer periphery of the outer member. And a flange that extends radially inward from the fitting portion and is in close contact with the end surface of the outer member, and a cylindrical portion that extends in the axial direction from the flange, and the cylindrical portion includes the first portion The wheel bearing device with a rotational speed detection device according to claim 1, wherein a seal plate is fitted therein.

前記第２のシール板が、前記内輪に外嵌され、その外周面に前記エンコーダが一体に設けられた円筒部と、この円筒部から軸方向に延びる円筒状の大径段部と、この大径段部から径方向外方に延びる立板部とを有する断面略Ｌ字状に形成され、この立板部の先端部にラビリンスシールが構成されている請求項１または２に記載の回転速度検出装置付き車輪用軸受装置。 The second seal plate is externally fitted to the inner ring, and a cylindrical portion in which the encoder is integrally provided on an outer peripheral surface thereof, a cylindrical large diameter step portion extending in the axial direction from the cylindrical portion, The rotational speed according to claim 1 or 2, wherein a labyrinth seal is formed at a distal end portion of the standing plate portion, which is formed in a substantially L-shaped section having a standing plate portion extending radially outward from the radial step portion. Wheel bearing device with detection device.

前記シールのさらにインボード側に断面略コの字状のシールドが配設され、このシールドを外側継手部材の肩部に僅かな径方向すきまを介して対向させてラビリンスシールが構成される請求項１乃至３いずれかに記載の回転速度検出装置付き車輪用軸受装置。 A labyrinth seal is constructed by arranging a shield having a substantially U-shaped cross section on the inboard side of the seal and making the shield face the shoulder of the outer joint member through a slight radial clearance. The wheel bearing apparatus with a rotational speed detection apparatus in any one of 1 thru | or 3.

前記シールドは、前記センサホルダに内嵌される第１円筒部と、この第１円筒部から径方向内方に延びる立板部と、この立板部から軸方向に延びる第２円筒部とからなり、前記立板部を前記第２のシール板に僅かな軸方向すきまを介して対向させてラビリンスシールが構成されている請求項４に記載の回転速度検出装置付き車輪用軸受装置。 The shield includes a first cylindrical portion fitted in the sensor holder, a standing plate portion extending radially inward from the first cylindrical portion, and a second cylindrical portion extending in the axial direction from the standing plate portion. The wheel bearing device with a rotational speed detection device according to claim 4, wherein a labyrinth seal is configured such that the standing plate portion is opposed to the second seal plate via a slight axial clearance.

前記シールドは、前記センサホルダに内嵌される第１円筒部と、この第１円筒部から径方向内方に延びる立板部と、この立板部から軸方向に延びる第２円筒部とからなり、前記第２円筒部を前記内輪の端面に僅かな軸方向すきまを介して対向させてラビリンスシールが構成されている請求項４に記載の回転速度検出装置付き車輪用軸受装置。 The shield includes a first cylindrical portion fitted in the sensor holder, a standing plate portion extending radially inward from the first cylindrical portion, and a second cylindrical portion extending in the axial direction from the standing plate portion. The wheel bearing device with a rotational speed detecting device according to claim 4, wherein a labyrinth seal is configured by causing the second cylindrical portion to face the end surface of the inner ring via a slight axial clearance.