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JP4829679B2 - Mounting method of magnetic encoder to wheel bearing device - Google Patents
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JP4829679B2 - Mounting method of magnetic encoder to wheel bearing device - Google Patents

Mounting method of magnetic encoder to wheel bearing device Download PDF

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JP4829679B2
JP4829679B2 JP2006142364A JP2006142364A JP4829679B2 JP 4829679 B2 JP4829679 B2 JP 4829679B2 JP 2006142364 A JP2006142364 A JP 2006142364A JP 2006142364 A JP2006142364 A JP 2006142364A JP 4829679 B2 JP4829679 B2 JP 4829679B2
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magnetic encoder
press
cylindrical portion
annular
inner member
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JP2007315411A (en
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晃 鳥居
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NTN Corp
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NTN Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To allow a magnetic encoder to press-fit a core bar provided to a bearing outside surface of a circular part to an end outside diameter surface of an inward member without deforming and damaging the magnetic encoder. <P>SOLUTION: A stepped circular part 11c rises in the same direction as a circular part 11b from a cylinder part 11a and a stepped cylinder part 11d axially extending from the tip of the stepped circular part 11c and continuing to the base end of the circular part 11b are provided between the cylinder part 11a of a core bar 11 externally fitted to the end outside diameter surface of the inner ring 3a in an inward member 3 and the circular part 11b including a magnetic encoder 12 on a bearing outside surface. By so doing, when press-fitting the core bar 11 to the end outside diameter surface of the inner ring 3a, the stepped circular part 11c which is provided with no magnetic encoder 12 can be pressed with a press-fitting jig or the like. As a result, the core bar 11 can be press-fitted to the end outside diameter surface of the inner ring 3a without deforming nor damaging the magnetic encoder 12. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

本発明は、回転センサが装着された車輪用軸受装置への磁気エンコーダの装着方法に関する。 The present invention relates to a method for attaching a magnetic encoder to a wheel bearing device to which a rotation sensor is attached.

自動車の車輪を支持する車輪用軸受装置には、複列の軌道面を内径側に有する外方部材と、この外方部材の各軌道面と対向する複列の軌道面を外径側に有する内方部材と、これらの外方部材と内方部材の軌道面間に複列に配列された転動体とからなり、外方部材を車体側に固定される固定部材、内方部材を車輪側に取り付けられる回転部材としたものがある。   A wheel bearing device for supporting a wheel of an automobile has an outer member having a double row raceway surface on the inner diameter side, and a double row raceway surface facing each raceway surface on the outer member on the outer diameter side. The inner member and rolling elements arranged in a double row between the outer member and the inner member raceway surface, a fixing member for fixing the outer member to the vehicle body side, and the inner member for the wheel side There is a rotating member that can be attached to.

また近年では、自動車の走行安定性を向上させるために、ＡＢＳ（Antilock Brake System）等が組み込まれることが多く、その制御のための車輪の回転を検出する回転センサが車輪用軸受装置に装着されている。この車輪の回転を検出する回転センサは、円周方向で複数の磁極に着磁された磁気エンコーダと、磁気エンコーダの回転に伴う磁束の変化を検出する磁気センサとからなり、磁気エンコーダが外方部材と内方部材のうちの回転部材側に装着され、磁気センサがこれと対向させて固定部材側に装着される。通常、磁気センサはセンサユニットに組み込まれ、このセンサユニットが固定部材側に装着される。   In recent years, ABS (Antilock Brake System) or the like is often incorporated in order to improve the running stability of a car, and a rotation sensor for detecting the rotation of the wheel for the control is mounted on the wheel bearing device. ing. The rotation sensor that detects the rotation of the wheel includes a magnetic encoder that is magnetized on a plurality of magnetic poles in the circumferential direction and a magnetic sensor that detects a change in magnetic flux accompanying the rotation of the magnetic encoder. The member is mounted on the rotating member side of the member and the inward member, and the magnetic sensor is mounted on the fixed member side so as to face this. Usually, a magnetic sensor is incorporated in a sensor unit, and this sensor unit is mounted on the fixed member side.

上述した外方部材を固定部材、内方部材を回転部材とした車輪用軸受装置には、回転部材である内方部材のインボード側の端部外径面に円筒部で外嵌される芯金に、この円筒部の軸受外側端から径方向に立ち上がる円環部を設け、この円環部の軸受外側面に磁気エンコーダを設けたものがある（例えば、特許文献１参照）。特許文献１に記載されたものでは、固定部材側に装着される磁気センサは、外方部材のインボード側の端部に取り付けられるカバーに装着している。外方部材側に装着される磁気センサは、外方部材に直接、または外方部材を固定するナックル等に取り付けられることもある。   In the wheel bearing device in which the outer member described above is a fixed member and the inner member is a rotating member, a core that is externally fitted with a cylindrical portion on the outer diameter surface on the inboard side of the inner member that is the rotating member. Some gold has an annular portion that rises in the radial direction from the outer end of the bearing of the cylindrical portion, and a magnetic encoder is provided on the bearing outer surface of the annular portion (see, for example, Patent Document 1). In the device described in Patent Document 1, the magnetic sensor attached to the fixed member side is attached to a cover attached to an end portion of the outer member on the inboard side. The magnetic sensor mounted on the outer member side may be attached directly to the outer member or a knuckle or the like that fixes the outer member.

特開平１０−３１９０２７号公報Japanese Patent Laid-Open No. 10-319027

特許文献１に記載された車輪用軸受装置のように、内方部材の端部外径面に外嵌される芯金の円環部の軸受外側面に磁気エンコーダを設けたものは、図５に示すように、芯金１１の円筒部１１ａを内方部材３の端部外径面に圧入する際に、磁気エンコーダ１２が設けられた円環部１１ｂの軸受外側面を圧入治具２０等によって押圧する必要があるので、磁気エンコーダ１２が変形したり、傷付いたりする問題がある。   As shown in the wheel bearing device described in Patent Document 1, a magnetic encoder is provided on the bearing outer surface of the annular portion of the core metal that is externally fitted to the outer diameter surface of the inner member. As shown in FIG. 2, when the cylindrical portion 11a of the core 11 is press-fitted into the outer diameter surface of the end portion of the inner member 3, the bearing outer surface of the annular portion 11b provided with the magnetic encoder 12 is inserted into the press-fitting jig 20 or the like. Therefore, there is a problem that the magnetic encoder 12 is deformed or damaged.

そこで、本発明の課題は、磁気エンコーダが円環部の軸受外側面に設けられた芯金を、磁気エンコーダを変形させたり、傷付けたりすることなく、内方部材の端部外径面に圧入できるようにすることである。   Accordingly, an object of the present invention is to press-fit the core bar provided on the outer surface of the bearing of the annular part into the outer diameter surface of the end of the inner member without deforming or scratching the magnetic encoder. Is to be able to do it.

上記の課題を解決するために、本発明は、複列の軌道面を内径側に有し、車体側に固定される外方部材と、この外方部材の各軌道面と対向する複列の軌道面を外径側に有し、車輪側に取り付けられる内方部材と、これらの外方部材と内方部材の軌道面間に複列に配列された転動体とからなり、前記内方部材のインボード側の端部外径面に円筒部で外嵌される芯金に、この円筒部の軸受外側端から径方向内方または外方に立ち上がる円環部を設け、この円環部の軸受外側面に、円周方向で複数の磁極に着磁された磁気エンコーダを設けた車輪用軸受装置への磁気エンコーダの装着方法において、前記芯金の円筒部と円環部との間に、円筒部から円環部と同方向に立ち上がる段差円環部と、この段差円環部の先端から軸方向に延びて円環部の基端に連なる段差円筒部とを設け、前記段差円環部を圧入治具で押圧して前記円筒部を内方部材のインボード側の端部外径面に圧入する構成を採用した。 In order to solve the above-described problems, the present invention has an outer member that has a double-row raceway surface on the inner diameter side and is fixed to the vehicle body side, and a double-row facing each raceway surface of the outer member. The inner member includes an inner member having a raceway surface on the outer diameter side and attached to the wheel side, and rolling elements arranged in a double row between the outer member and the raceway surface of the inner member. An annular portion that rises inward or outward in the radial direction from the outer end of the bearing of the cylindrical portion is provided on a core metal that is externally fitted to the outer diameter surface of the end portion on the inboard side of the cylindrical portion. In the mounting method of the magnetic encoder to the wheel bearing device provided with the magnetic encoder magnetized by a plurality of magnetic poles in the circumferential direction on the outer surface of the bearing, between the cylindrical portion and the annular portion of the core metal, A step ring part rising from the cylindrical part in the same direction as the ring part, and a base end of the ring part extending in the axial direction from the tip of the step ring part A stepped cylindrical portion continuous provided and is pressed by a pressure jig the stepped annular portion adopts a structure for press-fitting the cylindrical portion at an end outer diameter surface of the inboard side of the inner member.

すなわち、芯金の円筒部と円環部との間に、円筒部から円環部と同方向に立ち上がる段差円環部と、この段差円環部の先端から軸方向に延びて円環部の基端に連なる段差円筒部とを設けることにより、芯金を内方部材の端部外径面に圧入する際に、磁気エンコーダが設けられていない段差円環部を圧入治具等で押圧できるようにし、磁気エンコーダを変形させたり、傷付けたりすることなく、芯金を内方部材の端部外径面に圧入できるようにした。   That is, a stepped annular part that rises in the same direction as the annular part from the cylindrical part between the cylindrical part and the annular part of the cored bar, and extends in the axial direction from the tip of the stepped annular part. By providing a step cylindrical portion connected to the base end, a step annular portion not provided with a magnetic encoder can be pressed with a press-fitting jig or the like when the core metal is press-fitted into the outer diameter surface of the end portion of the inner member. In this way, the cored bar can be press-fitted into the outer diameter surface of the end portion of the inner member without deforming or scratching the magnetic encoder.

本発明の車輪用軸受装置への磁気エンコーダの装着方法においては、芯金の円筒部と円環部との間に、円筒部から円環部と同方向に立ち上がる段差円環部と、この段差円環部の先端から軸方向に延びて円環部の基端に連なる段差円筒部とを設け、磁気エンコーダが設けられていない段差円環部を圧入治具で押圧して、芯金の円筒部を内方部材の端部外径面に圧入するようにしたので、内方部材の端部に磁気エンコーダを変形させたり、傷付けたりすることなく装着することができる。 In the mounting method of the magnetic encoder to the wheel bearing device of the present invention, a step annular part rising from the cylindrical part in the same direction as the annular part between the cylindrical part and the annular part of the core metal, and the step set only a stepped cylindrical portion continuous to the base end of the annular portion extending from the distal end of the annular portion in the axial direction, and pressed by the press-fitting jig stepped annular portion in which the magnetic encoder is not provided, the core metal Since the cylindrical portion is press-fitted into the outer diameter surface of the end portion of the inner member, the magnetic encoder can be attached to the end portion of the inner member without being deformed or damaged.

以下、図面に基づき、本発明の実施形態を説明する。図１および図２は、第１の実施形態を示す。この車輪用軸受装置は、図１に示すように、複列の軌道面２ａ、２ｂを内径側に有する外方部材１と、外方部材１の各軌道面２ａ、２ｂと対向する複列の軌道面４ａ、４ｂを外径側に有する内方部材３と、これらの外方部材１と内方部材３の間の軸受空間に複列に配列された転動体としてのボール５とからなり、外方部材１がフランジ６で車体側に固定される固定部材、内方部材３がフランジ７に車輪がハブボルト８で取り付けられる回転部材とされている。内方部材３のインボード側の軌道面４ｂは、内方部材３にかしめ付けで固定された別体の内輪３ａの外径面に設けられている。また、軸受空間のアウトボード側はシール部材９で密封され、インボード側は、装置全体が外方部材１に取り付けられたカバー１０で密封されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment. As shown in FIG. 1, the wheel bearing device includes an outer member 1 having double-row raceway surfaces 2 a and 2 b on the inner diameter side, and double-row facing each raceway surface 2 a and 2 b of the outer member 1. An inner member 3 having raceway surfaces 4a and 4b on the outer diameter side, and balls 5 as rolling elements arranged in a double row in a bearing space between the outer member 1 and the inner member 3, The outer member 1 is a fixed member fixed to the vehicle body side by a flange 6, and the inner member 3 is a rotating member whose wheels are attached to the flange 7 by hub bolts 8. The track surface 4b on the inboard side of the inner member 3 is provided on the outer diameter surface of a separate inner ring 3a fixed to the inner member 3 by caulking. The outboard side of the bearing space is sealed with a seal member 9, and the entire inboard side is sealed with a cover 10 attached to the outer member 1.

前記内方部材３の内輪３ａのインボード側には、その端部外径面に外嵌された円筒部１１ａと、円筒部１１ａの軸受外側端から径方向内方に立ち上がる段差円環部１１ｃと、段差円環部１１ｃの先端から軸方向外方に延びる段差円筒部１１ｄと、段差円筒部１１ｄの先端からさらに径方向内方に立ち上がる円環部１１ｂとからなる芯金１１が装着され、円環部１１ｂの軸受外側面に、円周方向で複数の磁極に着磁された磁性ゴムで形成された磁気エンコーダ１２が設けられている。また、外方部材１のインボード側に取り付けられたカバー１０には、磁気エンコーダ１２と対向する磁気センサ１３ａを組み込んだセンサユニット１３が装着されている。   On the inboard side of the inner ring 3a of the inner member 3, a cylindrical portion 11a fitted on the outer diameter surface of the end portion, and a stepped annular portion 11c rising radially inward from the bearing outer end of the cylindrical portion 11a. And a metal core 11 comprising a step cylindrical portion 11d extending axially outward from the tip of the step annular portion 11c and a ring portion 11b rising further radially inward from the tip of the step cylindrical portion 11d, A magnetic encoder 12 made of magnetic rubber magnetized on a plurality of magnetic poles in the circumferential direction is provided on the bearing outer surface of the annular portion 11b. A sensor unit 13 incorporating a magnetic sensor 13 a facing the magnetic encoder 12 is attached to the cover 10 attached to the inboard side of the outer member 1.

図２（ａ）は、前記芯金１１を内方部材３の内輪３ａの端部外径面に圧入する状態を示す。芯金１１は、磁気エンコーダ１２が設けられていない段差円環部１１ｃを、圧入治具２０の環状の先端部で押圧され、内輪３ａの端部外径面に圧入される。したがって、磁気エンコーダ１２が変形したり、傷付いたりすることはない。   FIG. 2A shows a state in which the metal core 11 is press-fitted into the outer diameter surface of the end portion of the inner ring 3 a of the inner member 3. The cored bar 11 is pressed into the annular outer end surface of the inner ring 3a by pressing the stepped annular portion 11c on which the magnetic encoder 12 is not provided with the annular tip of the press-fitting jig 20. Therefore, the magnetic encoder 12 is not deformed or damaged.

図２（ｂ）は、前記芯金１１の変形例を示す。この変形例は、内輪３ａの端部外径面に外嵌される円筒部１１ａが軸方向外方に延長され、その先端から径方向内方に立ち上がる段差円環部１１ｃと、段差円環部１１ｃの先端から軸方向内方に戻る段差円筒部１１ｄと、段差円筒部１１ｄの先端から径方向内方に立ち上がる円環部１１ｂとからなり、円環部１１ｂの軸受外側面に磁気エンコーダ１２が設けられている。この芯金１１も、磁気エンコーダ１２が設けられていない段差円環部１１ｃを押圧され、内輪３ａの端部外径面に圧入される。   FIG. 2B shows a modification of the cored bar 11. In this modified example, a cylindrical portion 11a that is fitted on the outer diameter surface of the end portion of the inner ring 3a is extended outward in the axial direction, and a step annular portion 11c that rises radially inward from the tip thereof, and a step annular portion A step cylindrical portion 11d that returns inward in the axial direction from the tip of 11c and an annular portion 11b that rises radially inward from the tip of the step cylindrical portion 11d. Is provided. The core metal 11 is also pressed into the outer diameter surface of the end portion of the inner ring 3a by pressing the stepped annular portion 11c where the magnetic encoder 12 is not provided.

図３および図４は、第２の実施形態を示す。図３に示すように、この車輪用軸受装置は基本的な構成は第１の実施形態のものと同じであり、前記磁気エンコーダ１２の芯金１１の形態が異なる。この芯金１１は、内方部材３の内輪３ａの端部外径面に外嵌された円筒部１１ａと、円筒部１１ａの軸受外側端から径方向外方に立ち上がる段差円環部１１ｃと、段差円環部１１ｃの先端から軸方向外方に延びる段差円筒部１１ｄと、段差円筒部１１ｄの先端からさらに径方向外方に立ち上がる円環部１１ｂとからなり、円環部１１ｂの軸受外側面に、磁性ゴムで形成された磁気エンコーダ１２が設けられている。また、外方部材１のインボード側に取り付けられたカバー１０には、磁気エンコーダ１２と対向する磁気センサ１３ａを組み込んだセンサユニット１３が装着されている。   3 and 4 show a second embodiment. As shown in FIG. 3, the basic structure of this wheel bearing device is the same as that of the first embodiment, and the form of the metal core 11 of the magnetic encoder 12 is different. The metal core 11 includes a cylindrical portion 11a that is externally fitted to an end outer diameter surface of the inner ring 3a of the inner member 3, a step annular portion 11c that rises radially outward from the bearing outer end of the cylindrical portion 11a, A step cylindrical portion 11d extending axially outward from the tip end of the step annular portion 11c and a ring portion 11b rising further radially outward from the tip end of the step cylindrical portion 11d, the bearing outer surface of the ring portion 11b. Further, a magnetic encoder 12 made of magnetic rubber is provided. A sensor unit 13 incorporating a magnetic sensor 13 a facing the magnetic encoder 12 is attached to the cover 10 attached to the inboard side of the outer member 1.

図４（ａ）は、前記芯金１１を内方部材３の内輪３ａの端部外径面に圧入する状態を示す。芯金１１は、第１の実施形態のものと同様に、磁気エンコーダ１２が設けられていない段差円環部１１ｃを、圧入治具２０の環状の先端部で押圧され、内輪３ａの端部外径面に圧入される。したがって、磁気エンコーダ１２が変形したり、傷付いたりすることはない。   FIG. 4A shows a state in which the core metal 11 is press-fitted into the outer diameter surface of the end portion of the inner ring 3 a of the inner member 3. As in the first embodiment, the core metal 11 is pressed against the stepped annular portion 11c, on which the magnetic encoder 12 is not provided, by the annular tip portion of the press-fitting jig 20, and outside the end portion of the inner ring 3a. Press-fitted into the radial surface. Therefore, the magnetic encoder 12 is not deformed or damaged.

図４（ｂ）は、前記芯金１１の変形例を示す。この変形例は、内輪３ａの端部外径面に外嵌される円筒部１１ａが軸方向外方に延長され、その先端から径方向外方に立ち上がる段差円環部１１ｃと、段差円環部１１ｃの先端から軸方向内方に戻る段差円筒部１１ｄと、段差円筒部１１ｄの先端から径方向外方に立ち上がる円環部１１ｂとからなり、円環部１１ｂの軸受外側面に磁気エンコーダ１２が設けられている。この芯金１１も、磁気エンコーダ１２が設けられていない段差円環部１１ｃを押圧され、内輪３ａの端部外径面に圧入される。   FIG. 4B shows a modification of the core metal 11. In this modified example, a cylindrical portion 11a fitted on the outer diameter surface of the end portion of the inner ring 3a is extended outward in the axial direction, and a step annular portion 11c rising radially outward from the tip thereof, and a step annular portion A step cylindrical portion 11d that returns inward in the axial direction from the tip of 11c and an annular portion 11b that rises radially outward from the tip of the step cylindrical portion 11d. A magnetic encoder 12 is provided on the bearing outer surface of the annular portion 11b. Is provided. The core metal 11 is also pressed into the outer diameter surface of the end portion of the inner ring 3a by pressing the stepped annular portion 11c where the magnetic encoder 12 is not provided.

上述した各実施形態では、センサユニットに組み込まれた磁気センサを、外方部材に取り付けられたカバーに装着したが、磁気センサは、外方部材に直接、または外方部材が固定されるナックル等に装着することもできる。   In each of the embodiments described above, the magnetic sensor incorporated in the sensor unit is mounted on the cover attached to the outer member. However, the magnetic sensor can be directly attached to the outer member or a knuckle to which the outer member is fixed. It can also be attached to.

第１の実施形態の車輪用軸受装置を示す縦断面図The longitudinal cross-sectional view which shows the wheel bearing apparatus of 1st Embodiment ａは図１の芯金を圧入する状態を示す断面図、ｂはａの芯金の変形例を示す断面図a is a sectional view showing a state in which the cored bar of FIG. 1 is press-fitted, and b is a sectional view showing a modification of the cored bar of a. 第２の実施形態の車輪用軸受装置を示す縦断面図The longitudinal cross-sectional view which shows the wheel bearing apparatus of 2nd Embodiment ａは図３の芯金を圧入する状態を示す断面図、ｂはａの芯金の変形例を示す断面図a is a sectional view showing a state in which the cored bar of FIG. 3 is press-fitted, and b is a sectional view showing a modification of the cored bar of a. 従来の磁気エンコーダの芯金を圧入する状態を示す断面図Sectional drawing which shows the state which press-fits the metal core of the conventional magnetic encoder

符号の説明Explanation of symbols

１ 外方部材
２ａ、２ｂ 軌道面
３ 内方部材
３ａ 内輪
４ａ、４ｂ 軌道面
５ ボール
６、７ フランジ
８ ハブボルト
９ シール部材
１０ カバー
１１ 芯金
１１ａ 円筒部
１１ｂ 円環部
１１ｃ 段差円環部
１１ｄ 段差円筒部
１２ 磁気エンコーダ
１３ センサユニット
１３ａ 磁気センサ
２０ 圧入治具 DESCRIPTION OF SYMBOLS 1 Outer member 2a, 2b Raceway surface 3 Inner member 3a Inner ring 4a, 4b Raceway surface 5 Ball 6, 7 Flange 8 Hub bolt 9 Seal member 10 Cover 11 Core metal 11a Cylindrical part 11b Ring part 11c Step ring part 11d Step Cylindrical part 12 Magnetic encoder 13 Sensor unit 13a Magnetic sensor 20 Press fitting jig

Claims (1)

複列の軌道面を内径側に有し、車体側に固定される外方部材と、この外方部材の各軌道面と対向する複列の軌道面を外径側に有し、車輪側に取り付けられる内方部材と、これらの外方部材と内方部材の軌道面間に複列に配列された転動体とからなり、前記内方部材のインボード側の端部外径面に円筒部で外嵌される芯金に、この円筒部の軸受外側端から径方向内方または外方に立ち上がる円環部を設け、この円環部の軸受外側面に、円周方向で複数の磁極に着磁された磁気エンコーダを設けた車輪用軸受装置への磁気エンコーダの装着方法において、
前記芯金の円筒部と円環部との間に、円筒部から円環部と同方向に立ち上がる段差円環部と、この段差円環部の先端から軸方向に延びて円環部の基端に連なる段差円筒部とを設け、前記段差円環部を圧入治具で押圧して前記円筒部を内方部材のインボード側の端部外径面に圧入することを特徴とする車輪用軸受装置への磁気エンコーダの装着方法。 A double-row raceway surface on the inner diameter side, an outer member fixed to the vehicle body side, and a double-row raceway surface facing each raceway surface of the outer member on the outer diameter side, on the wheel side The inner member to be attached, and rolling elements arranged in a double row between the outer member and the raceway surface of the inner member, a cylindrical portion on the outer diameter surface of the inner member on the inboard side An annular portion that rises inward or outward in the radial direction from the outer end of the bearing of the cylindrical portion is provided on the metal core that is externally fitted in the outer peripheral surface of the cylindrical portion. In the mounting method of the magnetic encoder to the wheel bearing device provided with the magnetized magnetic encoder,
A stepped annular part rising in the same direction as the annular part from the cylindrical part between the cylindrical part and the annular part of the core metal, and extending in the axial direction from the tip of the stepped annular part to the base of the annular part A step cylindrical portion connected to the end, and press the step annular portion with a press-fitting jig to press-fit the cylindrical portion into the outer diameter surface of the inboard side end portion of the inner member . Mounting method of magnetic encoder to bearing device.
JP2006142364A 2006-05-23 2006-05-23 Mounting method of magnetic encoder to wheel bearing device Expired - Fee Related JP4829679B2 (en)

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JP5005565B2 (en) * 2008-01-29 2012-08-22 Ｎｔｎ株式会社 Wheel bearing device
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