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JP5333064B2 - Rolling bearing device for wheels - Google Patents
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JP5333064B2 - Rolling bearing device for wheels - Google Patents

Rolling bearing device for wheels Download PDF

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JP5333064B2
JP5333064B2 JP2009197969A JP2009197969A JP5333064B2 JP 5333064 B2 JP5333064 B2 JP 5333064B2 JP 2009197969 A JP2009197969 A JP 2009197969A JP 2009197969 A JP2009197969 A JP 2009197969A JP 5333064 B2 JP5333064 B2 JP 5333064B2
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Prior art keywords
ring member
protective cover
magnetized
outer ring
rolling bearing
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JP2011047490A (en
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広 矢野
賢治 漆川
剛史 奥村
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JTEKT Corp
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JTEKT 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

この発明は車輪用転がり軸受装置に関する。   The present invention relates to a wheel rolling bearing device.

従来、車輪用転がり軸受装置においては、外輪部材と、内輪部材と、これら外輪部材と内輪部材との間に転動可能に配置される転動体とを備え、外輪部材と内輪部材との両部材のうち、一方の部材に周方向に磁気特性が交互に変化するように着磁された着磁リングに組み付けられ、他方の部材に着磁リングに対応する車速センサが配置された構造のものが知られている。
また、この種の車輪用転がり軸受装置において、車体側部材及び車軸に車輪用転がり軸受装置を組み付ける前の状態では、着磁リングが露出状態となり、例えば、鉄粉が着磁リングに付着することがある。
着磁リングに鉄粉が付着することを防止するために、例えば、特許文献１に開示されている。
これにおいては、内輪部材の内径孔に弾性的に嵌込まれて係合される筒状の係合部と、着磁リングを覆って保護する覆い部とを備えた保護カバーが開示されている。 2. Description of the Related Art Conventionally, in a wheel rolling bearing device, an outer ring member, an inner ring member, and a rolling element that is arranged to roll between the outer ring member and the inner ring member, both members of the outer ring member and the inner ring member are provided. Among them, there is a structure in which one member is assembled to a magnetized ring magnetized so that the magnetic characteristics alternately change in the circumferential direction, and a vehicle speed sensor corresponding to the magnetized ring is arranged on the other member. Are known.
Further, in this type of wheel rolling bearing device, the magnetizing ring is exposed before the wheel rolling bearing device is assembled to the vehicle body side member and the axle, for example, iron powder adheres to the magnetizing ring. There is.
In order to prevent iron powder from adhering to the magnetized ring, for example, it is disclosed in Patent Document 1.
In this case, a protective cover including a cylindrical engaging portion that is elastically fitted into and engaged with an inner diameter hole of an inner ring member and a cover portion that covers and protects the magnetized ring is disclosed. .

特開２００４−１７６８２７号公報JP 2004-176827 A

ところで、前記従来の車輪用転がり軸受装置においては、車輪用転がり軸受装置を運搬・保管する際に、内輪部材の内径孔から保護カバーの筒状の係合部が不測に抜け出て保護カバーが脱落する場合がある。
このため、内輪部材の内径孔に対する保護カバーの筒状の係合部の嵌合長さを長くしたり、あるいは、内輪部材の内径孔に嵌込んだときに筒状の係合部の弾性力を高めて、保護カバーの脱落を防止することが考えられる。
しかしながら、保護カバーの筒状の係合部の嵌合長さを長くしたり、あるいは弾性力を高めると、内輪部材の内径孔に対する保護カバーの取り付けが厄介となる。 By the way, in the conventional wheel rolling bearing device, when the wheel rolling bearing device is transported and stored, the cylindrical engagement portion of the protective cover comes off unexpectedly from the inner diameter hole of the inner ring member, and the protective cover falls off. There is a case.
Therefore, the fitting length of the cylindrical engagement portion of the protective cover with respect to the inner diameter hole of the inner ring member is increased, or the elastic force of the cylindrical engagement portion when fitted into the inner diameter hole of the inner ring member. To prevent the protective cover from falling off.
However, when the fitting length of the cylindrical engaging portion of the protective cover is increased or the elastic force is increased, it is difficult to attach the protective cover to the inner diameter hole of the inner ring member.

この発明の目的は、前記問題点に鑑み、着磁リングを覆って保護する保護カバーを容易に取り付けることができると共に、不測の脱落を防止することができる車輪用転がり軸受装置を提供することである。   In view of the above problems, an object of the present invention is to provide a rolling bearing device for a wheel that can be easily attached with a protective cover that covers and protects a magnetized ring and that can prevent unexpected dropout. is there.

前記課題を解決するために、この発明の請求項１に係る車輪用転がり軸受装置は、外輪部材と、内輪部材と、これら外輪部材と内輪部材との間に転動可能に配置される転動体とを備え、前記外輪部材と前記内輪部材とのうち、一方の部材が車体側部材に組み付けられ、他方の部材が車軸側に組み付けられ、さらに、前記外輪部材と前記内輪部材との両部材のうち、一方の部材には、周方向に磁気特性が交互に変化するように着磁された着磁リングが組み付けられた車輪用転がり軸受装置であって、
前記外輪部材と前記内輪部材とのうち、一方の部材には、この部材に係脱可能に係合される係合部と、前記着磁リングを覆って保護する覆い部とを一体状に有する保護カバーが装着され、
前記保護カバーの少なくとも前記覆い部は、前記着磁リングの磁力によって吸着される磁性粉が混合された樹脂材によって形成されていることを特徴とする。 In order to solve the above-mentioned problem, a rolling bearing device for a wheel according to claim 1 of the present invention includes an outer ring member, an inner ring member, and a rolling element that is arranged to be able to roll between the outer ring member and the inner ring member. Of the outer ring member and the inner ring member, one member is assembled to the vehicle body side member, the other member is assembled to the axle side, and both the outer ring member and the inner ring member One of the members is a rolling bearing device for a wheel in which a magnetized ring magnetized so that the magnetic characteristics are alternately changed in the circumferential direction is assembled,
Of the outer ring member and the inner ring member, one member integrally includes an engaging portion that is detachably engaged with the member and a cover portion that covers and protects the magnetized ring. A protective cover is attached,
At least the cover part of the protective cover is formed of a resin material mixed with magnetic powder adsorbed by the magnetic force of the magnetizing ring.

前記構成によると、保護カバーは、その係合部が外輪部材と内輪部材とのうち、一方の部材に係合されて取り付けられ、保護カバーの覆い部が着磁リングを覆って保護すると共に、着磁リングの磁力によって吸着される。
このため、保護カバーの取付状態において、保護カバーは、係合部の係合力に加えて、着磁リングの磁力によって取り付け状態が保たれる。
この結果、保護カバーの不測の脱落を良好に防止することができる。 According to the above configuration, the protective cover is attached so that the engaging portion is engaged with one of the outer ring member and the inner ring member, and the cover portion of the protective cover covers and protects the magnetized ring, It is attracted by the magnetic force of the magnetized ring.
For this reason, in the attachment state of the protection cover, the attachment state of the protection cover is maintained by the magnetic force of the magnetizing ring in addition to the engagement force of the engagement portion.
As a result, it is possible to satisfactorily prevent the protective cover from being accidentally dropped off.

請求項２に係る車輪用転がり軸受装置は、請求項１に記載の車輪用転がり軸受装置であって、
保護カバーは、磁性粉が混合された樹脂材によって一体成形された成形品であることを特徴とする。 The rolling bearing device for a wheel according to claim 2 is the rolling bearing device for a wheel according to claim 1,
The protective cover is a molded product integrally formed of a resin material mixed with magnetic powder.

前記構成によると、磁性粉が混合された樹脂材によって一体成形された成形品によって保護カバーを安価に製作することができる。   According to the said structure, a protective cover can be manufactured at low cost with the molded article integrally molded with the resin material with which magnetic powder was mixed.

この発明の実施例１に係る車輪用転がり軸受装置が車体側部材及び車軸にそれぞれ組み付けられた状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state by which the rolling bearing device for wheels which concerns on Example 1 of this invention was each assembled | attached to the vehicle body side member and the axle shaft. 同じく車輪用転がり軸受装置が車体側部材及び車軸にそれぞれ組み付けられる前の状態を示す縦断面図である。Similarly, it is a longitudinal cross-sectional view showing a state before the wheel rolling bearing device is assembled to the vehicle body side member and the axle, respectively. 同じく着磁リングと保護カバーとの関係を拡大して示す断面図である。Similarly, it is sectional drawing which expands and shows the relationship between a magnetized ring and a protective cover. 同じく保護カバーを破断して示す斜視図である。It is a perspective view which fractures | ruptures and shows a protective cover similarly. この発明の実施例２に係る車輪用転がり軸受装置が車体側部材及び車軸にそれぞれ組み付けられた状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state by which the rolling bearing device for wheels which concerns on Example 2 of this invention was each assembled | attached to the vehicle body side member and the axle. 同じく車輪用転がり軸受装置が車体側部材及び車軸にそれぞれ組み付けられる前の状態を示す縦断面図である。Similarly, it is a longitudinal cross-sectional view showing a state before the wheel rolling bearing device is assembled to the vehicle body side member and the axle, respectively. 同じく着磁リングと保護カバーとの関係を拡大して示す断面図である。Similarly, it is sectional drawing which expands and shows the relationship between a magnetized ring and a protective cover. 同じく保護カバーを示す斜視図である。It is a perspective view which similarly shows a protective cover.

この発明を実施するための最良の形態について実施例にしたがって説明する。   The best mode for carrying out the present invention will be described in accordance with an embodiment.

この発明の実施例１を図１〜図４にしたがって説明する。
図１に示すように、この実施例１に係る車輪用転がり軸受装置（車輪用ハブユニットとも呼ばれることがある）は、転がり軸受としての複列のアンギュラ玉軸受３１を構成する外輪部材５０、内輪部材（ハブホイールと呼ばれることもある）４０、各複数個の玉（この発明の転動体に相当する）５３、５４及び保持器５５、５６を備えている。
すなわち、筒状をなす外輪部材５０の外周面の軸方向中央部には、車体側部材、例えば、車両の懸架装置（図示しない）に支持されたナックル１３（又はキャリア）の取付面に固定するため固定フランジ５７が形成されている。そして、外輪部材５０は、その一端部外周面がナックル１３の組付孔に嵌挿され、固定フランジ５７がナックル１３の取付面に当接した状態で複数本のボルト（図示しない）が固定フランジ５７を通してナックル１３の取付面にねじ込まれることによって固定される。この外輪部材５０の内周面には複列の外輪軌道面５１、５２が形成されている。 A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wheel rolling bearing device according to the first embodiment (sometimes referred to as a wheel hub unit) includes an outer ring member 50 and an inner ring constituting a double row angular ball bearing 31 as a rolling bearing. A member (sometimes referred to as a hub wheel) 40, a plurality of balls (corresponding to rolling elements of the present invention) 53 and 54, and cages 55 and 56 are provided.
That is, it fixes to the attachment surface of the knuckle 13 (or carrier) supported by the vehicle body side member, for example, the suspension device (not shown) of a vehicle, in the axial direction center part of the outer peripheral surface of the cylindrical outer ring member 50. Therefore, a fixing flange 57 is formed. The outer ring member 50 has an outer peripheral surface at one end inserted into the assembly hole of the knuckle 13 and a plurality of bolts (not shown) are fixed to the fixing flange 57 in contact with the mounting surface of the knuckle 13. It is fixed by being screwed into the mounting surface of the knuckle 13 through 57. Double row outer ring raceway surfaces 51 and 52 are formed on the inner peripheral surface of the outer ring member 50.

外輪部材５０の複列の外輪軌道面５１、５２に対応する複列の内輪軌道面４６、４７が外周面に形成された内輪部材４０は、筒軸状をなすハブ軸４２と、ハブ軸４２の一端部寄り外周面に形成されたフランジ４３とを一体に有している。
そして、内輪部材４０は、そのハブ軸４２の内孔に車軸（例えば、ドライブシャフト）２０のスプライン軸部２１がスプライン嵌合された後、車軸２０先端の雄ねじ部２２に締付ナット２３が締め付けられることで、トルク伝達可能に連結固定されるようになっている。
また、フランジ４３には、ブレーキロータ（図示しない）を間に挟んで車輪（図示しない）を取り付けるための複数本のハブボルト４４が所定ピッチで圧入によって固定されている。 An inner ring member 40 in which double-row inner ring raceway surfaces 46 and 47 corresponding to double-row outer ring raceway surfaces 51 and 52 of the outer ring member 50 are formed on the outer peripheral surface includes a hub shaft 42 having a cylindrical shaft shape, and a hub shaft 42. It has integrally with the flange 43 formed in the outer peripheral surface near one end part.
In the inner ring member 40, after the spline shaft portion 21 of the axle (for example, drive shaft) 20 is spline-fitted into the inner hole of the hub shaft 42, the tightening nut 23 is tightened to the male screw portion 22 at the tip of the axle 20. As a result, it is connected and fixed so that torque can be transmitted.
A plurality of hub bolts 44 for attaching a wheel (not shown) with a brake rotor (not shown) interposed therebetween are fixed to the flange 43 by press-fitting at a predetermined pitch.

外輪部材５０の複列の外輪軌道面５１、５２と、内輪部材４０の複列の内輪軌道面４６、４７の間には、転動体としての各複数個の玉５３、５４が保持器５５、５６によってそれぞれ保持された状態で転動可能に配置されている。
また、この実施例１においては、図１に示すように、ハブ軸４２の外周面に設けられた両内輪軌道面４６、４７のうち、ハブ軸４２のフランジ４３側に位置する内輪軌道面４６は、ハブ軸４２の外周面が研削加工されることによって形成され、ハブ軸４２の先端側の内輪軌道面４７は、ハブ軸４２の先端寄り外周面に圧入固定された内輪体４５の外周面に形成されている。 Between the double row outer ring raceway surfaces 51 and 52 of the outer ring member 50 and the double row inner ring raceway surfaces 46 and 47 of the inner ring member 40, a plurality of balls 53 and 54 as rolling elements are provided in a cage 55, The rollers 56 are arranged so as to be able to roll while being held by the respective members 56.
Further, in the first embodiment, as shown in FIG. 1, the inner ring raceway surface 46 located on the flange 43 side of the hub shaft 42 among the both inner ring raceway surfaces 46, 47 provided on the outer peripheral surface of the hub shaft 42. Is formed by grinding the outer peripheral surface of the hub shaft 42, and the inner ring raceway surface 47 on the front end side of the hub shaft 42 is press-fitted and fixed to the outer peripheral surface near the front end of the hub shaft 42. Is formed.

外輪部材５０と内輪部材４０との両部材のうち、一方の部材には、周方向に磁気特性（Ｓ極、Ｎ極）が交互に変化するように着磁された着磁リング（パルサーリング、磁気エンコーダ等とも呼ばれることがある）６３が組み付けられている。
また、外輪部材５０と内輪部材４０との両部材のうち、一方の部材には、着磁リング６３を覆って保護する保護カバー８０が装着されている。 Among the members of the outer ring member 50 and the inner ring member 40, one member has a magnetized ring (pulsar ring, magnetized so that magnetic characteristics (S pole, N pole) are alternately changed in the circumferential direction. 63 (sometimes called a magnetic encoder or the like).
A protective cover 80 that covers and protects the magnetized ring 63 is attached to one of the members of the outer ring member 50 and the inner ring member 40.

この実施例１において、内輪部材４０の内輪体４５と外輪部材５０の一側端部の間には、パックシールと呼ばれることもある一対の第１シール部材６０と第２シール部材６５とが組み込まれている。
第１シール部材６０は、円筒状に形成された筒状部６１と、この筒状部６１の一端から径方向外方へ直角状に曲げられた環状部６２とを備えて横断面Ｌ字状に形成され、その筒状部６１において、内輪体４５の鍔部外周面に圧入固定される。
そして、第１シール部材６０の環状部６２の外側面に着磁リング６３が接着剤等によって貼り付けられている。 In the first embodiment, a pair of a first seal member 60 and a second seal member 65, sometimes called a pack seal, are incorporated between the inner ring body 45 of the inner ring member 40 and one side end of the outer ring member 50. It is.
The first seal member 60 includes a cylindrical part 61 formed in a cylindrical shape, and an annular part 62 bent at a right angle from one end of the cylindrical part 61 radially outward. The cylindrical portion 61 is press-fitted and fixed to the outer peripheral surface of the flange portion of the inner ring body 45.
A magnetized ring 63 is attached to the outer surface of the annular portion 62 of the first seal member 60 with an adhesive or the like.

一方、第２シール部材６５は、円筒状に形成された筒状部６６と、この筒状部６６の一端から径方向内方へ直角状に曲げられた環状部６７とを備えて横断面Ｌ字状に形成され、その筒状部６６において、外輪部材５０の一端部内周面に圧入固定される。
また、第２シール部材６５には、ゴム弾性を有して第１シール部材６０の環状部６２の内側面に摺接するリップ６８と、筒状部６１の外周面に摺接するリップ６９とが形成されている。 On the other hand, the second seal member 65 includes a cylindrical portion 66 formed in a cylindrical shape and an annular portion 67 bent at a right angle inward in the radial direction from one end of the cylindrical portion 66. The cylindrical portion 66 is press-fitted and fixed to the inner peripheral surface of one end portion of the outer ring member 50.
Further, the second seal member 65 is formed with a lip 68 having rubber elasticity and slidably contacting the inner surface of the annular portion 62 of the first seal member 60 and a lip 69 slidably contacting the outer peripheral surface of the cylindrical portion 61. Has been.

図３と図４に示すように、保護カバー８０は、外輪部材５０と内輪部材４０との両部材のうち、一方の部材に係脱可能に係合される係合部８１と、着磁リング６３を覆って保護する覆い部８３とを一体状に有し、保護カバー８０の少なくとも覆い部８３は、着磁リング６３の磁力によって吸着される磁性粉が混合された樹脂材によって形成されている。   As shown in FIG. 3 and FIG. 4, the protective cover 80 includes an engagement portion 81 that is detachably engaged with one member of both the outer ring member 50 and the inner ring member 40, and a magnetizing ring. And a cover portion 83 that covers and protects 63, and at least the cover portion 83 of the protective cover 80 is formed of a resin material mixed with magnetic powder that is adsorbed by the magnetic force of the magnetizing ring 63. .

この実施例１において、保護カバー８０は、磁性粉が混合された樹脂材によって一体成形された成形品によって構成され、外輪部材５０の一端部外周面に嵌込まれて係合する筒状の係合部８１と、この係合部８１の一端の径方向内方へ直角状をなして形成された覆い部８３と備えている。
また、筒状の係合部８１の内径寸法は、外輪部材５０の一端部外周面の外径寸法と同等に形成され、係合部８１の先端部寄り内周面には、外輪部材５０の一端部外周面の外径寸法よりも小さい内径寸法をもって環状凸部８４が形成され、この環状凸部８４は、外輪部材５０の一端部外周面に凹設された環状溝５９に係脱可能に係合される。
また、保護カバー８０の取り付け状態において、覆い部８３が着磁リング６３の着磁面に接触又は接近して吸着されるようになっている。
なお、図１に示すように、着磁リング６３に対する車速センサ７０は、その先端部に配置された検出部７１が着磁リング６３の着磁面に臨んで車体側部材としてのナックル１３に形成された取付孔に取り付けられる。
また、車速センサ７０は、外輪部材５０に取り付けられる形式のものもある。 In the first embodiment, the protective cover 80 is formed of a molded product that is integrally formed of a resin material mixed with magnetic powder, and is fitted into and engaged with the outer peripheral surface of one end portion of the outer ring member 50. A joining portion 81 and a cover portion 83 formed at a right angle inward in the radial direction at one end of the engaging portion 81 are provided.
Further, the inner diameter dimension of the cylindrical engaging portion 81 is formed to be equal to the outer diameter dimension of the outer peripheral surface of the one end portion of the outer ring member 50, and the inner peripheral surface near the tip end portion of the engaging portion 81 is An annular convex portion 84 is formed with an inner diameter smaller than the outer diameter of the outer peripheral surface of the one end, and the annular convex 84 can be engaged with and disengaged from an annular groove 59 formed in the outer peripheral surface of the outer end of the outer ring member 50. Engaged.
Further, in the attached state of the protective cover 80, the cover 83 is brought into contact with or close to the magnetized surface of the magnetized ring 63.
As shown in FIG. 1, the vehicle speed sensor 70 for the magnetized ring 63 is formed in the knuckle 13 as a vehicle body side member with the detection unit 71 disposed at the tip thereof facing the magnetized surface of the magnetized ring 63. It is attached to the attached mounting hole.
The vehicle speed sensor 70 may be attached to the outer ring member 50.

上述したように構成されるこの実施例１に係る車輪用転がり軸受装置において、車体側部材としてのナックル１３及び車軸２０に車輪用転がり軸受装置を組み付ける前の運搬時や保管時の状態において、図３に示すように、保護カバー８０は、その筒状の係合部８１が外輪部材５０の一端部外周面に嵌込まれ、外輪部材５０の一端部外周面に凹設された環状溝５９に環状凸部８４が係合されることによって外輪部材５０に取り付けられる。
この保護カバー８０の取り付け状態において、覆い部８３が着磁リング６３の着磁面に接触又は接近して吸着される。
これによって、着磁リング６３の着磁面に鉄粉等の異物が吸着されることが防止される。 In the wheel rolling bearing device according to the first embodiment configured as described above, the knuckle 13 as the vehicle body side member and the axle 20 are assembled in a state during transportation and storage before the wheel rolling bearing device is assembled. As shown in FIG. 3, the protective cover 80 has a cylindrical engagement portion 81 fitted into the outer peripheral surface of one end portion of the outer ring member 50, and an annular groove 59 recessed in the outer peripheral surface of one end portion of the outer ring member 50. The annular projection 84 is attached to the outer ring member 50 by being engaged.
In the attached state of the protective cover 80, the cover portion 83 is attracted by contacting or approaching the magnetized surface of the magnetized ring 63.
This prevents foreign matters such as iron powder from being adsorbed on the magnetized surface of the magnetized ring 63.

また、保護カバー８０の取付状態において、保護カバー８０は、外輪部材５０に対する筒状の係合部８１による係合力に加えて、着磁リング６３の磁力による覆い部８３の吸着力によって取り付け状態が保たれる。
この結果、保護カバー８０の不測の脱落を良好に防止することができる。仮に、保護カバー８０が変形して外輪部材５０に対する係合力が低下したとしても、着磁リング６３の磁力による覆い部８３の吸着力によって保護カバー８０の取り付け状態を維持することでき、保護カバー８０の不測の脱落を良好に防止することができる。 In addition, in the attached state of the protective cover 80, the protective cover 80 is attached by the attractive force of the cover portion 83 due to the magnetic force of the magnetized ring 63 in addition to the engaging force of the cylindrical engaging portion 81 with respect to the outer ring member 50. Kept.
As a result, it is possible to satisfactorily prevent the protective cover 80 from dropping off. Even if the protective cover 80 is deformed and the engaging force with respect to the outer ring member 50 is reduced, the attachment state of the protective cover 80 can be maintained by the attractive force of the cover 83 due to the magnetic force of the magnetized ring 63. Can be prevented satisfactorily.

また、この実施例１において、磁性粉が混合された樹脂材によって一体成形された成形品によって保護カバー８０を安価に製作することができる。
また、保護カバー８０は、車両の組み付けラインにおいて、車体側部材としてのナックル１３及び車軸２０に車輪用転がり軸受装置を組み付ける直前に取り外されたり、あるいは、車体側部材としてのナックル１３及び車軸２０に車輪用転がり軸受装置を組み付けた後、取り外される。
また、ナックル１３及び車軸２０に車輪用転がり軸受装置を組み付けた後、保護カバー８０を取り外す場合には、保護カバー８０が破損されることで取り外される。この場合、保護カバー８０を破損しやすいように保護カバー８０の一部に脆弱部を形成することが望ましい。
また、車速センサ７０は、保護カバー８０を取り外した後、ナックル１３に形成された取付孔や外輪部材５０に取り付けられる。 Further, in the first embodiment, the protective cover 80 can be manufactured at a low cost by a molded product integrally formed of a resin material mixed with magnetic powder.
Further, the protective cover 80 is removed immediately before the wheel rolling bearing device is assembled to the knuckle 13 and the axle 20 as the vehicle body side member in the vehicle assembly line, or is attached to the knuckle 13 and the axle 20 as the vehicle body side member. After assembling the wheel rolling bearing device, it is removed.
In addition, when the protective cover 80 is removed after the wheel rolling bearing device is assembled to the knuckle 13 and the axle 20, the protective cover 80 is removed due to damage. In this case, it is desirable to form a weak part in a part of the protective cover 80 so that the protective cover 80 is easily damaged.
The vehicle speed sensor 70 is attached to an attachment hole formed in the knuckle 13 or the outer ring member 50 after removing the protective cover 80.

次に、この発明の実施例２を図５〜図８にしたがって説明する。
図５に示すように、この実施例２に係る車輪用転がり軸受装置においては、車体側部材としてのアクスルハウジング（図示しない）と、車軸（アクスルシャフト）１２０との間に配置される場合を例示するものであり、転がり軸受としての複列のアンギュラ玉軸受１３１を構成する内輪部材１４０は、それぞれ個別に形成された内輪体１４５ａ、１４５ｂによって構成され、これら両内輪体１４５ａ、１４５ｂが車軸１２０の外周面に圧入されて組み付けられる。
両内輪体１４５ａ、１４５ｂと同心上に組み付けられる外輪部材１５０の外周面には、アクスルハウジングにボルト等によって取り付けられる固定フランジ１５７が形成されている。
また、外輪部材１５０の複列の外輪軌道面１５１、１５２と、両内輪体１４５ａ、１４５ｂの各内輪軌道面１４６、１４７の間には、転動体としての各複数個の玉１５３、１５４が保持器１５５、１５６によってそれぞれ保持された状態で転動可能に配置されている。 Next, a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 5, in the wheel rolling bearing device according to the second embodiment, a case where the wheel bearing device is disposed between an axle housing (not shown) as a vehicle body side member and an axle (axle shaft) 120 is illustrated. The inner ring member 140 constituting the double-row angular ball bearing 131 as a rolling bearing is constituted by individually formed inner ring members 145a and 145b, and both the inner ring members 145a and 145b are formed on the axle 120. It is pressed into the outer peripheral surface and assembled.
On the outer peripheral surface of the outer ring member 150 that is assembled concentrically with the inner ring bodies 145a and 145b, a fixing flange 157 is formed that is attached to the axle housing with bolts or the like.
A plurality of balls 153 and 154 as rolling elements are held between the outer ring raceway surfaces 151 and 152 of the outer ring member 150 and the inner ring raceway surfaces 146 and 147 of the inner ring bodies 145a and 145b. The rollers 155 and 156 are arranged so as to be able to roll while being held.

図５に示すように、一方（車両インナ側）の内輪体１４５ｂと、外輪部材１５０の一側（車両インナ側）端部の間には、着磁リング１６３が保持部材１６０によって保持された状態に組み付けられている。
この実施例２において、図６と図７に示すように、保持部材１６０は、円筒状に形成された筒状部１６１と、この筒状部１６１の一端から径方向外方へ直角状に曲げられた環状部１６２とを備えて横断面Ｌ字状に形成され、その筒状部１６１において、一方の内輪体１４５ｂの鍔部外周面に圧入固定される。
そして、保持部材１６０の環状部１６２の外側面に着磁リング１６３が接着剤等によって貼り付けられている。 As shown in FIG. 5, the magnetized ring 163 is held by the holding member 160 between the inner ring body 145 b on one side (vehicle inner side) and the end portion on one side (vehicle inner side) of the outer ring member 150. It is assembled to.
In the second embodiment, as shown in FIGS. 6 and 7, the holding member 160 includes a cylindrical portion 161 formed in a cylindrical shape, and is bent at a right angle outward from the one end of the cylindrical portion 161 in the radial direction. The annular portion 162 is formed in an L-shaped cross section, and the cylindrical portion 161 is press-fitted and fixed to the outer peripheral surface of the flange portion of one inner ring body 145b.
A magnetized ring 163 is attached to the outer surface of the annular portion 162 of the holding member 160 with an adhesive or the like.

外輪部材１５０と一方の内輪体１４５ｂとの両部材のうち、一方の部材には、着磁リング１６３を覆って保護する保護カバー１８０が装着されている。
この実施例２において、保護カバー１８０は、磁性粉が混合された樹脂材によって一体成形された成形品によって構成され、外輪部材１５０の一端部内周面に嵌込まれて係合する筒状の係合部１８１と、この係合部１８１の一端の径方向内方へ直角状をなして形成された覆い部１８３と、筒状の係合部１８１の他端の径方向外方へ直角状をなして形成された環状部１８４と、環状部１８４の外周縁の一部から延出された把持部１８５と、環状部１８４の外周縁の複数箇所から延出されて固定フランジ１５７の外周面に沿って折り返された折返し片１８６とを備えている。
また、筒状の係合部１８１の外径寸法は、外輪部材５０の一端部内周面の内径寸法と同等に形成されている。
そして、図７に示すように、保護カバー１８０が取り付けられた状態において、覆い部１８３が着磁リング１６３の着磁面に接触又は接近して吸着されるようになっている。
なお、図５に示すように、着磁リング１６３に対する車速センサ１７０は、その先端部に配置された検出部１７１が着磁リング１６３の着磁面に臨んで外輪部材１５０に形成された取付孔に取り付けられる。 A protective cover 180 that covers and protects the magnetized ring 163 is attached to one of the members of the outer ring member 150 and the one inner ring body 145b.
In the second embodiment, the protective cover 180 is formed of a molded product integrally formed of a resin material mixed with magnetic powder, and is fitted into and engaged with the inner peripheral surface of one end portion of the outer ring member 150. The joint portion 181, a cover portion 183 formed at a right angle inward in the radial direction at one end of the engagement portion 181, and a right angle shape at the other end of the cylindrical engagement portion 181 in the radial outward direction. An annular portion 184 formed, a grip portion 185 extending from a part of the outer peripheral edge of the annular portion 184, and extending from a plurality of locations on the outer peripheral edge of the annular portion 184 to the outer peripheral surface of the fixing flange 157 And a folded piece 186 folded back along.
Further, the outer diameter of the cylindrical engaging portion 181 is formed to be equal to the inner diameter of the inner peripheral surface of the one end portion of the outer ring member 50.
As shown in FIG. 7, the cover portion 183 is attracted by contacting or approaching the magnetized surface of the magnetized ring 163 in a state where the protective cover 180 is attached.
As shown in FIG. 5, the vehicle speed sensor 170 for the magnetized ring 163 has a mounting hole formed in the outer ring member 150 with the detecting portion 171 disposed at the tip thereof facing the magnetized surface of the magnetized ring 163. Attached to.

上述したように構成されるこの実施例２に係る車輪用転がり軸受装置において、車体側部材としてのアクスルハウジング（図示しない）及び車軸１２０に車輪用転がり軸受装置を組み付ける前の運搬時や保管時の状態において、図７に示すように、保護カバー１８０は、筒状の係合部１８１が外輪部材１５０の一端部内周面に嵌込まれて係合されることによって外輪部材１５０に取り付けられる。
この保護カバー１８０の取り付け状態において、覆い部１８３が着磁リング１６３の着磁面に接触又は接近して吸着される。
これによって、着磁リング１６３の着磁面に鉄粉等の異物が吸着されることが防止される。 In the wheel rolling bearing device according to the second embodiment configured as described above, the axle housing (not shown) as the vehicle body side member and the axle 120 are assembled during transportation or storage before the wheel rolling bearing device is assembled to the axle 120. In the state, as shown in FIG. 7, the protective cover 180 is attached to the outer ring member 150 by the cylindrical engagement portion 181 being fitted and engaged with the inner peripheral surface of one end portion of the outer ring member 150.
In the attached state of the protective cover 180, the cover portion 183 is attracted by contacting or approaching the magnetized surface of the magnetized ring 163.
This prevents foreign matters such as iron powder from being adsorbed on the magnetized surface of the magnetized ring 163.

また、保護カバー１８０の取付状態において、保護カバー１８０は、外輪部材１５０に対する筒状の係合部１８１による係合力（嵌合力）及び固定フランジ５７の外周面に対する折返し片１８６の係合力に加えて、着磁リング１６３の磁力による覆い部１８３の吸着力によって取り付け状態が保たれる。
この結果、保護カバー１８０の不測の脱落を良好に防止することができる。仮に、保護カバー１８０が変形して外輪部材１５０に対する係合力が低下したとしても、着磁リング１６３の磁力による覆い部１８３の吸着力によって保護カバー１８０の取り付け状態を維持することでき、保護カバー１８０の不測の脱落を良好に防止することができる。 Further, in the attached state of the protective cover 180, the protective cover 180 is applied in addition to the engaging force (fitting force) by the cylindrical engaging portion 181 with respect to the outer ring member 150 and the engaging force of the folded piece 186 with respect to the outer peripheral surface of the fixing flange 57. The attached state is maintained by the attractive force of the cover 183 by the magnetic force of the magnetized ring 163.
As a result, it is possible to satisfactorily prevent the protective cover 180 from being accidentally dropped. Even if the protective cover 180 is deformed and the engaging force with respect to the outer ring member 150 is reduced, the attachment state of the protective cover 180 can be maintained by the attractive force of the cover portion 183 due to the magnetic force of the magnetized ring 163. Can be prevented satisfactorily.

また、この実施例２においても、実施例１と同様にして、磁性粉が混合された樹脂材によって一体成形された成形品によって保護カバー１８０を安価に製作することができる。
また、保護カバー１８０は、車両の組み付けラインにおいて、車体側部材としてのアクスルハウジング及び車軸１２０に車輪用転がり軸受装置を組み付ける直前に取り外されたり、あるいは、アクスルハウジング及び車軸１２０に車輪用転がり軸受装置を組み付けた後、取り外される。
また、アクスルハウジング及び車軸１２０に車輪用転がり軸受装置を組み付けた後、保護カバー１８０を取り外す場合には、保護カバー１８０が破損されることで取り外される。この場合、保護カバー１８０を破損しやすいように保護カバー１８０の一部に脆弱部を形成することが望ましい。
また、車速センサ１７０は、保護カバー１８０を取り外した後、外輪部材１５０の取付孔に取り付けられる。 Also in the second embodiment, similarly to the first embodiment, the protective cover 180 can be manufactured at low cost by using a molded product integrally formed of a resin material mixed with magnetic powder.
Further, the protective cover 180 is removed immediately before the wheel rolling bearing device is mounted on the axle housing and the axle 120 as the vehicle body side member in the vehicle assembly line, or the wheel rolling bearing device is mounted on the axle housing and the axle 120. After assembling, it is removed.
In addition, when the protective cover 180 is removed after the wheel rolling bearing device is assembled to the axle housing and the axle 120, the protective cover 180 is removed due to damage. In this case, it is desirable to form a fragile portion in a part of the protective cover 180 so that the protective cover 180 is easily damaged.
The vehicle speed sensor 170 is attached to the attachment hole of the outer ring member 150 after the protective cover 180 is removed.

なお、この発明は前記実施例１及び２に限定するものではなく、この発明の要旨を逸脱しない範囲内において、種々なる形態で実施することもできる。
例えば、前記実施例１及び２においては、磁性粉が混合された樹脂材によって一体成形された成形品によって保護カバー８０（１８０）が形成される場合を例示したが、保護カバー８０（１８０）の覆い部８３（１８３）のみが、着磁リング６３（１６３）の磁力によって吸着される磁性粉が混合された樹脂材によって形成される場合においてもこの発明を実施可能である。 In addition, this invention is not limited to the said Example 1 and 2, In the range which does not deviate from the summary of this invention, it can also be implemented with a various form.
For example, in the first and second embodiments, the case where the protective cover 80 (180) is formed by a molded product integrally formed of a resin material mixed with magnetic powder is illustrated. The present invention can be implemented even when only the cover portion 83 (183) is formed of a resin material mixed with magnetic powder adsorbed by the magnetic force of the magnetizing ring 63 (163).

１３ ナックル（車体側部材）
２０ 車軸
３１、１３１ 複列のアンギュラ玉軸受（転がり軸受）
４０、１４０ 内輪部材
４５ 内輪体
１４５ａ、１４５ｂ 内輪体
５０、１５０ 外輪部材
５３、５４、１５３、１５４ 玉（転動体）
６３、１６３ 着磁リング
７０、１７０ 車速センサ
８０、１８０ 保護カバー
８１、１８１ 筒状の係合部
８３、１８３ 覆い部 13 Knuckles (vehicle body side members)
20 Axle 31, 131 Double row angular contact ball bearing (rolling bearing)
40, 140 Inner ring member 45 Inner ring body 145a, 145b Inner ring body 50, 150 Outer ring member 53, 54, 153, 154 Ball (rolling element)
63, 163 Magnetized ring 70, 170 Vehicle speed sensor 80, 180 Protective cover 81, 181 Cylindrical engagement part 83, 183 Cover part

Claims (2)

外輪部材と、内輪部材と、これら外輪部材と内輪部材との間に転動可能に配置される転動体とを備え、前記外輪部材と前記内輪部材とのうち、一方の部材が車体側部材に組み付けられ、他方の部材が車軸側に組み付けられ、さらに、前記外輪部材と前記内輪部材との両部材のうち、一方の部材には、周方向に磁気特性が交互に変化するように着磁された着磁リングが組み付けられた車輪用転がり軸受装置であって、
前記外輪部材と前記内輪部材とのうち、一方の部材には、この部材に係脱可能に係合される係合部と、前記着磁リングを覆って保護する覆い部とを一体状に有する保護カバーが装着され、
前記保護カバーの少なくとも前記覆い部は、前記着磁リングの磁力によって吸着される磁性粉が混合された樹脂材によって形成されていることを特徴とする車輪用転がり軸受装置。 An outer ring member, an inner ring member, and a rolling element that is rotatably arranged between the outer ring member and the inner ring member, and one of the outer ring member and the inner ring member is a vehicle body side member. The other member is assembled on the axle side, and one of the outer ring member and the inner ring member is magnetized so that the magnetic characteristics alternately change in the circumferential direction. A rolling bearing device for a wheel in which a magnetized ring is assembled,
Of the outer ring member and the inner ring member, one member integrally includes an engaging portion that is detachably engaged with the member and a cover portion that covers and protects the magnetized ring. A protective cover is attached,
At least the cover part of the protective cover is formed of a resin material mixed with magnetic powder adsorbed by the magnetic force of the magnetizing ring. 請求項１に記載の車輪用転がり軸受装置であって、
保護カバーは、磁性粉が混合された樹脂材によって一体成形された成形品であることを特徴とする車輪用転がり軸受装置。 It is a rolling bearing device for wheels according to claim 1,
The rolling bearing device for a wheel according to claim 1, wherein the protective cover is a molded product integrally formed of a resin material mixed with magnetic powder.
JP2009197969A 2009-08-28 2009-08-28 Rolling bearing device for wheels Expired - Fee Related JP5333064B2 (en)

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JP6547543B2 (en) * 2015-09-24 2019-07-24 日本精工株式会社 Sensor-equipped rolling bearing, motor, vehicle and mechanical device

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US20070172164A1 (en) * 2006-01-20 2007-07-26 Jtekt Corporation Rolling bearing system for vehicles
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