JP2006161970A - Wheel bearing device - Google Patents

Wheel bearing device Download PDF

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Publication number
JP2006161970A
JP2006161970A JP2004354798A JP2004354798A JP2006161970A JP 2006161970 A JP2006161970 A JP 2006161970A JP 2004354798 A JP2004354798 A JP 2004354798A JP 2004354798 A JP2004354798 A JP 2004354798A JP 2006161970 A JP2006161970 A JP 2006161970A
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Prior art keywords
inner ring
ring
inboard side
hub
wheel
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JP2004354798A
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JP4628766B2 (en
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Hiroshi Fujimura
啓 藤村
Takayasu Takubo
孝康 田窪
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2004354798A priority Critical patent/JP4628766B2/en
Priority to US11/663,850 priority patent/US7883272B2/en
Priority to DE112005002498T priority patent/DE112005002498T5/en
Priority to PCT/JP2005/016738 priority patent/WO2006040897A1/en
Publication of JP2006161970A publication Critical patent/JP2006161970A/en
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Publication of JP4628766B2 publication Critical patent/JP4628766B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel bearing device for preventing the come-off of an inner ring due to vibration during a time from the delivery of a bearing to assembly on a vehicle while minimizing the deformation of the inner ring and hoop stress on the inner ring. <P>SOLUTION: The wheel bearing device for supporting a driving wheel comprises an outward member 1 having double-raw rolling surfaces 3 on the inner periphery, an inward member 2 having rolling surfaces 4 opposed to the rolling surfaces 3, and double-raw rolling elements 5 laid between the opposed rolling surfaces 3, 4. The inward member 2 has a hub ring 9 having a wheel mounting flange 9a and the inner ring 10 fitted to the outer periphery of an inboard side portion of the hub ring 9. The double-raw rolling surfaces 4 are formed on the hub ring 9 and the inner ring 10, respectively. An annular recessed portion 11 is provided in the outer periphery of the hub ring 9 near its inboard side end. A portion of the hub ring 9 on its inboard side beyond the annular recessed portion 11 is plastically deformed to the outer diameter side, and the plastically deformed portion 12 is opposed to the face directed to the inboard side in a stepped portion 10b of the inner ring 10 to prevent the come-off of the inner ring 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、自動車等の車輪を回転自在に支持する車輪用軸受装置に関する。   The present invention relates to a wheel bearing device that rotatably supports a wheel of an automobile or the like.

従来、駆動輪支持用の車輪用軸受装置として、図５に示すものが提案されている（例えば特許文献１）。これは、外方部材２１と内方部材２２の対向する転走面２３，２４間に複列にボール２５を介在させ、上記内方部材２２を、車輪取付用ハブフランジ２９ａを外周に有するハブ輪２９と、このハブ輪２９のインボード側端の外周に嵌合した内輪３０とで構成したものである。内輪３０は、ハブ輪２９に設けられた段部３５に嵌合する。ハブ輪３０の中央孔３１には、等速ジョイントの外輪３３のステム部３３ａが挿通されてスプライン嵌合され、等速ジョイント外輪３３の段面３３ｂが内輪３０のインボード側端面３０ａに押し当てられる。この状態で、前記ステム部３３ａの先端にナット３４を螺合させることにより、等速ジョイント外輪３３とナット３４とで内方部材２２が幅締めされる。   Conventionally, what is shown in FIG. 5 is proposed as a wheel bearing device for driving wheel support (for example, patent document 1). This is because the balls 25 are interposed between the opposing rolling surfaces 23 and 24 of the outer member 21 and the inner member 22 in a double row, and the inner member 22 is a hub having a wheel mounting hub flange 29a on the outer periphery. This is composed of a ring 29 and an inner ring 30 fitted to the outer periphery of the inboard side end of the hub ring 29. The inner ring 30 is fitted into a step portion 35 provided on the hub ring 29. The stem portion 33a of the outer ring 33 of the constant velocity joint is inserted into the central hole 31 of the hub wheel 30 and is spline-fitted. The step surface 33b of the constant velocity joint outer ring 33 is pressed against the inboard side end surface 30a of the inner ring 30. It is done. In this state, the inner member 22 is tightened by the constant velocity joint outer ring 33 and the nut 34 by screwing the nut 34 into the tip of the stem portion 33a.

この種の車輪用軸受装置では、ハブ輪２９に嵌合させた内輪３０が、軸受装置の実車への組付けまでの間に不用意に抜けることを防止することが望まれる。このような要望に応じて、同図の提案例では、内輪３０のインボード側端部の内周に段部３６を形成し、この段部３６を、ハブ輪２９の端部全周に設けた加締部２９ｂで抑え付けるようにしている。   In this type of wheel bearing device, it is desirable to prevent the inner ring 30 fitted to the hub wheel 29 from being inadvertently removed before the bearing device is assembled to the actual vehicle. In response to such a request, in the proposed example of the figure, a step portion 36 is formed on the inner periphery of the end portion on the inboard side of the inner ring 30, and this step portion 36 is provided on the entire periphery of the end portion of the hub wheel 29. The caulking portion 29b is used for restraining.

同図の提案例は、次の改善を図ったものである。すなわち、従来の一般的な駆動輪支持用の車輪用軸受装置では、図５の提案例の内輪３０に段部３６を設けずに、内輪３０の端面を直接に加締部２９ｂで抑え付けている。その場合、加締部２９ｂが内輪３０よりも軸方向に突出するため、加締部２９ｂに、等速ジョイント外輪３３との突き当て面とするための追加工が、加締加工後に必要になる。図５の提案例のものでは、加締部２９ｂが内輪３０の段部３６外にはみ出さず、内輪３０の端面を突き当て面とすることができ、追加工が不要となる。
特開平９−１６４８０３号公報 The proposed example in the figure is the following improvement. That is, in the conventional wheel bearing device for driving wheel support, the end face of the inner ring 30 is directly held down by the crimping part 29b without providing the step part 36 in the inner ring 30 of the proposed example of FIG. Yes. In that case, since the crimping portion 29b protrudes in the axial direction from the inner ring 30, an additional process for making the abutting surface with the constant velocity joint outer ring 33 is necessary for the crimping portion 29b after the crimping process. . In the proposed example of FIG. 5, the caulking portion 29 b does not protrude from the step portion 36 of the inner ring 30, and the end surface of the inner ring 30 can be used as an abutting surface, so that no additional work is required.
JP-A-9-164803

しかし、同図の提案例は、次のような問題がある。
(1)加締加工において、加締工具が内輪３０の内径部と干渉し、加工が困難である。この場合、通常の揺動加締と異なり、加締外径部を抑えることができないため、軸方向に押し潰す要素の高い加締となる。その結果、ハブ輪２９の軸部の膨張量が過大となり、内輪３０に発生するフープ応力が高くなる。フープ応力が過大となると、内輪３０の割れや早期剥離を引き起こす原因となる。
(2) 内輪３０に段部３６を大きく設けると、内輪３０と等速ジョイント外輪３３の段面３３ｂとの突き合わせ面積が小さくなり、接触面圧が過大となる。すなわち、上記のように、等速ジョイント外輪３３とナット３４とで内方部材２２が幅締めされる。この時、内輪３０の端面と等速ジョイント外輪３３の段面３３ｂとが接触することになるが、内輪３０の端面の面積が小さいと、接触面圧が大きくなり、実車において摩耗や異音発生の原因となる。
なお、ハブ輪２９に加締部２９ｂを設けない車輪用軸受装置では、上記のような内輪３０の変形や面圧過大等の問題は生じないが、軸受出荷から車両への組付けまでに、振動等により内輪に不用意な抜けが生じることがある。 However, the proposed example in the figure has the following problems.
(1) In the caulking process, the caulking tool interferes with the inner diameter portion of the inner ring 30, and the machining is difficult. In this case, unlike normal swing caulking, the caulking outer diameter portion cannot be suppressed, and therefore, caulking of the elements that are crushed in the axial direction is high. As a result, the amount of expansion of the shaft portion of the hub ring 29 becomes excessive, and the hoop stress generated in the inner ring 30 increases. If the hoop stress is excessive, it will cause cracking of the inner ring 30 and early peeling.
(2) If the inner ring 30 is provided with a large step portion 36, the abutting area between the inner ring 30 and the step surface 33b of the constant velocity joint outer ring 33 is reduced, and the contact surface pressure becomes excessive. That is, as described above, the inner member 22 is tightened by the constant velocity joint outer ring 33 and the nut 34. At this time, the end surface of the inner ring 30 and the stepped surface 33b of the constant velocity joint outer ring 33 come into contact with each other. However, if the area of the end surface of the inner ring 30 is small, the contact surface pressure increases, and wear and noise are generated in the actual vehicle. Cause.
In the wheel bearing device in which the hub ring 29 is not provided with the caulking portion 29b, the problems such as the deformation of the inner ring 30 and the excessive surface pressure do not occur, but from the bearing shipment to the assembly to the vehicle, Inadvertent disconnection may occur in the inner ring due to vibration or the like.

この発明の目的は、内輪の変形および内輪に発生するフープ応力を最小限に抑え、かつ軸受出荷から車両への組付けまでに振動等により内輪の抜けが生じるのを防止できる車輪用軸受装置を提供することである。   An object of the present invention is to provide a wheel bearing device capable of minimizing deformation of the inner ring and hoop stress generated in the inner ring and preventing the inner ring from coming off due to vibration or the like from the shipment of the bearing to assembly to the vehicle. Is to provide.

この発明の車輪用軸受装置は、内周に複列の転走面を有する外方部材と、前記各転走面に対向する転走面を外周に有する内方部材と、これら対向する転走面の間に介在した複列の転走面を有する転動体とを備え、前記内方部材が車輪取付用のフランジを有するハブ輪とこのハブ輪のインボード側部の外周に嵌合した内輪とでなり、前記ハブ輪および内輪に各列の前記転走面が形成され、車体に対して駆動輪となる車輪を回転自在に支持する車輪用軸受装置に適用される。上記構成において、前記ハブ輪のインボード側端の付近の外周に環状凹部を設け、前記ハブ輪の前記環状凹部よりもインボード側の部分を外径側へ塑性変形させてその塑性変形部分を前記内輪のインボード側に向く面に対向させることにより、内輪の抜け止めを行ったことを特徴とする。前記塑性変形部分は、内輪のインボード側を向く面に対向させれば良く、例えば前記塑性変形部分を前記内輪のインボード側を向く面に押し付けたものとしても良く、また前記塑性変形部分と前記内輪のインボード側を向く面との間に隙間を有するものとしても良い。
この構成によると、ハブ輪のインボード側の端部を外径側へ塑性変形させて、その塑性変形部分を内輪のインボード側を向く面に対向させたため、軸受出荷から車両への組付けまでに振動等で内輪が不用意にハブ輪から抜けることが防止できる。この場合に、ハブ輪のインボード側端の付近の外周に環状凹部を設け、この環状凹部よりもインボード側の部分を塑性変形させるため、環状凹部により形成されるハブ輪のくびれ形状により、外径側への塑性変形加工が容易に行える。そのため加締加工で内輪を変形させることが回避でき、またハブ輪軸部の膨張量の過大により内輪にフープ応力が大きく発生することが回避される。 The wheel bearing device of the present invention includes an outer member having a double-row rolling surface on the inner periphery, an inner member having a rolling surface facing the respective rolling surfaces on the outer periphery, and the opposing rolling A rolling element having a double-row rolling surface interposed between the surfaces, and the inner ring is fitted with a hub ring having a wheel mounting flange and an outer periphery of an inboard side portion of the hub ring. The rolling surfaces of each row are formed on the hub wheel and the inner ring, and the present invention is applied to a wheel bearing device that rotatably supports a wheel serving as a driving wheel with respect to a vehicle body. In the above configuration, an annular recess is provided on the outer periphery of the hub wheel in the vicinity of the inboard side end, and a plastic deformation portion is formed by plastically deforming a portion of the hub wheel on the inboard side from the annular recess. The inner ring is prevented from coming off by being opposed to a surface facing the inboard side of the inner ring. The plastic deformation portion may be opposed to the surface facing the inboard side of the inner ring, for example, the plastic deformation portion may be pressed against the surface facing the inboard side of the inner ring, and the plastic deformation portion and It is good also as what has a clearance gap between the surfaces which face the inboard side of the said inner ring | wheel.
According to this configuration, the end of the hub ring on the inboard side is plastically deformed to the outer diameter side, and the plastic deformation portion is opposed to the surface facing the inboard side of the inner ring. By this, it is possible to prevent the inner ring from inadvertently coming off the hub ring due to vibration or the like. In this case, an annular recess is provided on the outer periphery in the vicinity of the end of the inboard side of the hub wheel, and the portion on the inboard side is plastically deformed from the annular recess. Plastic deformation to the outer diameter side can be easily performed. Therefore, the inner ring can be prevented from being deformed by caulking, and a large hoop stress is prevented from being generated in the inner ring due to an excessive expansion amount of the hub ring shaft portion.

この発明において、内輪の内径面におけるインボード側端の全周に、前記内径面よりも大径となる段部を設け、前記ハブ輪の前記塑性変形部分を前記内輪の前記段部内におけるインボード側を向く面のみに対向させても良い。
前記段部が設けられていると、塑性変形部分が内輪の段部外にはみ出さず、内輪の端面を等速ジョイント外輪の段面に対する突き当て面とすることができて、塑性変形部分を偏平化する追加工が不要となる。また、塑性変形部分が前記段部内におけるインボード側を向く端面のみに係合し、段部の内径面に接触しないため、フープ応力の発生をより確実に防止できる。 In this invention, a step portion having a larger diameter than the inner diameter surface is provided on the entire circumference of the inboard side end of the inner ring surface of the inner ring, and the plastic deformation portion of the hub ring is placed in the inboard portion of the inner ring. You may make it oppose only to the surface which faces the side.
When the step portion is provided, the plastic deformation portion does not protrude outside the step portion of the inner ring, and the end surface of the inner ring can be abutting surface with respect to the step surface of the constant velocity joint outer ring. No additional work for flattening is required. Further, since the plastically deformed portion engages only with the end surface facing the inboard side in the stepped portion and does not contact the inner diameter surface of the stepped portion, generation of hoop stress can be prevented more reliably.

この発明において、前記ハブ輪の前記塑性変形部分が、前記内輪よりもインボード側へ突出しないものとしても良い。必ずしも上記段部を設けなくても、ハブ輪の前記塑性変形部分を内輪から突出ないものとすると、内輪の端面を等速ジョイント外輪との突き当て面とすることができ、塑性変形部分に突き当て面を確保するための追加工が不要となる。   In the present invention, the plastically deformed portion of the hub ring may not protrude toward the inboard side from the inner ring. Even if the stepped portion is not necessarily provided, if the plastic deformation portion of the hub ring does not protrude from the inner ring, the end surface of the inner ring can be used as a contact surface with the constant velocity joint outer ring, and the plastic deformation portion is protruded. No additional work is required to secure the contact surface.

この発明の車輪用軸受装置は、内方部材が車輪取付用のフランジを有するハブ輪とこのハブ輪のインボード側部の外周に嵌合した内輪とでなり、前記ハブ輪および内輪に各列の前記転走面が形成された車輪用軸受装置において、前記ハブ輪のインボード側端の付近の外周に環状凹部を設け、前記ハブ輪の前記環状凹部よりもインボード側の部分を外径側へ塑性変形させてその塑性変形部分を前記内輪のインボード側を向く面に対向させることにより、内輪の抜け止めを行ったため、内輪の変形、および内輪に発生するフープ応力を最小限に抑え、かつ軸受出荷から車両への組付けまでに振動等により内輪の抜けが生じるこを防止することができる。   The wheel bearing device according to the present invention comprises a hub ring having an inner member having a wheel mounting flange and an inner ring fitted to the outer periphery of the inboard side portion of the hub ring. In the wheel bearing device in which the rolling surface is formed, an annular recess is provided on the outer periphery in the vicinity of the inboard side end of the hub wheel, and an inboard side portion of the hub wheel is formed on the outer side of the annular recess. The inner ring is prevented from coming off by plastically deforming it toward the side facing the inboard side of the inner ring, so that deformation of the inner ring and hoop stress generated in the inner ring are minimized. In addition, it is possible to prevent the inner ring from coming off due to vibration or the like from the shipment of the bearing to the assembly to the vehicle.

この発明の第１の実施形態を図１および図２と共に説明する。この実施形態は、第３世代型の内輪回転タイプで、かつ駆動輪支持用の車輪用軸受装置に適用したものである。なお、この明細書において、車両に取付けた状態で車両の車幅方向外側寄りとなる側をアウトボード側と言い、車両の中央寄りとなる側をインボード側と呼ぶ。
この車輪用軸受装置は、内周に複列の転走面３を形成した外方部材１と、これら各転走面３に対向する転走面４を形成した内方部材２と、これら外方部材１および内方部材２の転走面３，４間に介在した複列の転動体５とで構成される。この車輪用軸受装置は、複列のアンギュラ玉軸受型とされていて、転動体５はボールからなり、各列毎に保持器６で保持されている。上記各転走面３，４は断面円弧状であり、各転走面３，４はボール接触角が背面合わせとなるように形成されている。外方部材１と内方部材２との間の軸受空間の両端は、シール７，８によりそれぞれ密封されている。 A first embodiment of the present invention will be described with reference to FIGS. This embodiment is a third generation type inner ring rotation type and is applied to a wheel bearing device for driving wheel support. In this specification, the side closer to the outer side in the vehicle width direction of the vehicle when attached to the vehicle is referred to as the outboard side, and the side closer to the center of the vehicle is referred to as the inboard side.
The wheel bearing device includes an outer member 1 in which double-row rolling surfaces 3 are formed on the inner periphery, an inner member 2 in which rolling surfaces 4 facing the respective rolling surfaces 3 are formed, and the outer members 1. It is comprised by the double row rolling element 5 interposed between the rolling surfaces 3 and 4 of the direction member 1 and the inner member 2. As shown in FIG. This wheel bearing device is a double-row angular ball bearing type, and the rolling elements 5 are formed of balls, and are held by a cage 6 for each row. Each of the rolling surfaces 3 and 4 has an arc shape in cross section, and each of the rolling surfaces 3 and 4 is formed such that the ball contact angle is aligned with the back surface. Both ends of the bearing space between the outer member 1 and the inner member 2 are sealed by seals 7 and 8, respectively.

外方部材１は固定側の部材となるものであって、車体取付フランジ１ａを外周に有し、全体が一体の部品とされている。前記車体取付フランジ１ａは、車体（図示せず）に設置されたナックルにボルト（図示せず）で締結される。
内方部材２は回転側の部材となるものであって、外周に車輪取付用のフランジ９ａを有するハブ輪９と、このハブ輪９のインボード側部の外周に嵌合した内輪１０とでなり、前記複列の転走面４におけるアウトボード側列の転走面４がハブ輪９に、インボード側列の転走面４が内輪１０にそれぞれ形成されている。ハブ輪９はインボード側部の外周に段差部とされた内輪嵌合面９ｂを有し、この内輪嵌合面９ｂに内輪１０が嵌合する。ハブ輪９は中央孔１４を有し、その転走面４は、高周波焼入れ処理した表面硬化処理面とされている。また、内輪１０は、表面から芯部までの全体が焼き入れ処理により硬化させてある。 The outer member 1 is a member on the fixed side, has a vehicle body mounting flange 1a on the outer periphery, and is formed as an integral part as a whole. The vehicle body mounting flange 1a is fastened to a knuckle installed on a vehicle body (not shown) with a bolt (not shown).
The inner member 2 is a rotating member, and includes a hub wheel 9 having a wheel mounting flange 9a on the outer periphery, and an inner ring 10 fitted to the outer periphery of the inboard side portion of the hub wheel 9. Thus, the rolling surface 4 of the outboard side row in the double row rolling surface 4 is formed on the hub wheel 9, and the rolling surface 4 of the inboard side row is formed on the inner ring 10, respectively. The hub wheel 9 has an inner ring fitting surface 9b formed as a step portion on the outer periphery of the inboard side portion, and the inner ring 10 is fitted to the inner ring fitting surface 9b. The hub wheel 9 has a center hole 14 and its rolling surface 4 is a surface-hardened surface subjected to induction hardening. Further, the inner ring 10 is entirely hardened by quenching from the surface to the core.

図１（Ｂ）に一部を拡大して示すように、内輪１０の内径面１０ａにおけるインボード側端の全周には、前記内径面１０ａよりも大径となる段部１０ｂが設けられている。ハブ輪９のインボード側端の付近の外周には環状凹部１１が設けられており、このハブ輪９の前記環状凹部１１よりも先端側の部分、つまりインボード側の部分を外径側へ塑性変形させて、その塑性変形部分１２を内輪１０のインボード側を向く面に対向させることにより、内輪１０の抜け止めが図られている。
具体的には、図２（Ａ）に示す塑性加工前の状態で、ハブ輪９の環状凹部１１は、そのアウトボード側に向く側面１１ａが前記内輪段部１０ｂのインボード側を向く面１０ｂａよりも若干インボード側寄りとなる位置に設けられている。また、この状態で、ハブ輪９のインボード側の端面は、内輪１０のインボード側の端面よりも若干アウトボード側寄りとなる位置とされている。この加工前の状態から、図２（Ｂ）のように、ハブ輪９の前記環状凹部１１よりもインボード側の部分を、その内径面側に治具１３を押し込んで外径側へ塑性変形させる。前記治具１３は、先端側が小径となったテーパ状（テーパの角度θ）の外径面を有するものとされている。
これにより、図２（Ｃ）のように、前記環状凹部１１におけるアウトボード側に向く側面１１ａを、前記内輪段部１０ｂにおけるインボード側を向く面１０ｂａのみに対向させる。このとき、ハブ輪９の塑性変形部分１２は、内輪１０よりもインボード側へ突出しない。また、ハブ輪９における塑性変形部分１２の外径面と、内輪１０における前記段部１０ｂとの間には若干の隙間δが確保される。
同図（Ｃ），図１（Ｂ）の例においては、塑性変形部分１２は、内輪１０のインボード側を向く面１０ｂａに押し付けたものとしているが、図４に示すように、塑性変形部分１２と内輪１０のインボード側を向く面１０ｂａとの間に隙間δ２を有するものとしても良い。 As shown in a partially enlarged view in FIG. 1 (B), a step portion 10b having a larger diameter than the inner diameter surface 10a is provided on the entire circumference of the inboard side end of the inner diameter surface 10a of the inner ring 10. Yes. An annular recess 11 is provided on the outer periphery of the hub wheel 9 in the vicinity of the inboard side end, and a portion of the hub wheel 9 on the tip side of the annular recess 11, that is, a portion on the inboard side is directed to the outer diameter side. The inner ring 10 is prevented from coming off by being plastically deformed so that the plastically deformed portion 12 faces the surface of the inner ring 10 facing the inboard side.
Specifically, in the state before the plastic working shown in FIG. 2A, the annular recess 11 of the hub wheel 9 has a surface 10ba in which the side surface 11a facing the outboard side faces the inboard side of the inner ring step portion 10b. It is provided at a position slightly closer to the inboard side. Further, in this state, the end surface on the inboard side of the hub wheel 9 is positioned slightly closer to the outboard side than the end surface on the inboard side of the inner ring 10. From the state before this processing, as shown in FIG. 2 (B), the portion on the inboard side of the annular recess 11 of the hub wheel 9 is plastically deformed by pushing the jig 13 into the inner diameter side thereof and moving toward the outer diameter side. Let The jig 13 has an outer diameter surface having a tapered shape (taper angle θ) having a small diameter on the tip side.
Thus, as shown in FIG. 2C, the side surface 11a facing the outboard side in the annular recess 11 is made to face only the surface 10ba facing the inboard side in the inner ring step portion 10b. At this time, the plastically deformed portion 12 of the hub wheel 9 does not protrude toward the inboard side from the inner ring 10. In addition, a slight gap δ is secured between the outer diameter surface of the plastic deformation portion 12 of the hub wheel 9 and the stepped portion 10b of the inner ring 10.
In the examples of FIGS. 1C and 1B, the plastically deformed portion 12 is pressed against the surface 10ba facing the inboard side of the inner ring 10, but as shown in FIG. 12 and a surface 10ba facing the inboard side of the inner ring 10 may have a gap δ2.

この車輪用軸受装置の車両への組付けにおいては、ハブ輪９の中央孔１４に、等速ジョイント１５の片方の継手部材となる外輪１６のステム部１６ａが挿通されてスプライン嵌合され、ステム部１６ａの先端に螺合するナット１７の締め付けにより、等速ジョイント外輪１６が内方部材２に結合される。このとき、等速ジョイント外輪１６に設けられたアウトボード側に向く段面１６ｂが、内輪１０のインボード側に向く端面１０ｃに押し付けられ、等速ジョイント外輪１６とナット１７とで内方部材２が幅締めされる。車輪取付用のフランジ９ａは、ハブ輪９のアウトボード側端に位置しており、このフランジ９ａにブレーキロータを介して駆動輪となる車輪（いずれも図示せず）がボルト１８で取付けられる。   In assembling the wheel bearing device to the vehicle, the stem portion 16a of the outer ring 16 serving as one joint member of the constant velocity joint 15 is inserted into the central hole 14 of the hub wheel 9 and is spline-fitted. The constant velocity joint outer ring 16 is coupled to the inner member 2 by tightening the nut 17 that is screwed into the tip of the portion 16a. At this time, the step surface 16 b provided on the constant velocity joint outer ring 16 facing the outboard side is pressed against the end surface 10 c facing the inboard side of the inner ring 10, and the inner member 2 is formed by the constant velocity joint outer ring 16 and the nut 17. Is tightened. The wheel mounting flange 9a is located at the end of the hub wheel 9 on the outboard side, and a wheel (not shown) serving as a driving wheel is attached to the flange 9a with a bolt 18 via a brake rotor.

この構成の車輪用軸受装置によると、ハブ輪９のインボード側端の付近の外周に環状凹部１１を設け、ハブ輪９の前記環状凹部１１よりもインボード側の部分を外径側へ塑性変形させて、その塑性変形部分１２を内輪１０のインボード側を向く面１０ｂａに対向させることにより、内輪１０の抜け止めを図っているので、軸受出荷から車両への組付けまでに振動等で内輪１０が不用意にハブ輪９から抜けることを防止できる。前記環状凹部１１を設けたため、環状凹部１１により形成されるハブ輪９のくびれ形状により、外径側への塑性変形加工が容易に行える。そのため加締加工で内輪１０を変形させることが回避できる。また、ハブ輪９における前記環状凹部１１の軸方向位置を調整することにより、その塑性変形部分１２の位置を調整することができる。   According to the wheel bearing device of this configuration, the annular recess 11 is provided on the outer periphery near the inboard side end of the hub wheel 9, and the portion on the inboard side of the hub wheel 9 from the annular recess 11 is plasticized to the outer diameter side. The inner ring 10 is prevented from coming off by deforming the plastic deformation portion 12 so as to face the surface 10ba facing the inboard side of the inner ring 10, so that vibration or the like may occur between shipment of the bearing and assembly to the vehicle. The inner ring 10 can be prevented from inadvertently coming off the hub ring 9. Since the annular recess 11 is provided, the plastic deformation to the outer diameter side can be easily performed by the constricted shape of the hub wheel 9 formed by the annular recess 11. Therefore, it is possible to avoid deformation of the inner ring 10 by caulking. Further, by adjusting the axial position of the annular recess 11 in the hub wheel 9, the position of the plastic deformation portion 12 can be adjusted.

この実施形態では、内輪１０の内径面１０ａにおけるインボード側端の全周に、前記内径面１０ａよりも大径となる段部１０ｂを設け、ハブ輪９の前記塑性変形部分１２を前記段部１０ｂ内に配置し、塑性変形部分１２が、内輪１０よりもインボード側へ突出しないものとされているので、内輪１０の端面を等速ジョイント外輪１６との突き当て面とすることができ、従来例のように突き当て面を確保するための追加工が不要となる。   In this embodiment, a step portion 10b having a larger diameter than the inner diameter surface 10a is provided on the entire circumference of the inboard side end of the inner diameter surface 10a of the inner ring 10, and the plastic deformation portion 12 of the hub wheel 9 is connected to the step portion. 10b, and the plastic deformation portion 12 does not protrude from the inner ring 10 to the inboard side. Therefore, the end surface of the inner ring 10 can be a contact surface with the constant velocity joint outer ring 16, As in the conventional example, no additional work for securing the abutting surface is required.

また、ハブ輪９の塑性変形部分１２は、内輪１０の前記段部１０ｂ内におけるインボード側に向く面１０ｂａのみに対向させており、段部１０ｂの内径面から離れているため、塑性変形部分１２の塑性変形加工に伴う内輪１０の変形や、内輪１０に発生するフープ応力を最小限に抑えることができる。
内輪１０に段部１０ｂが設けられていても、段部１０ｂを必要最少限の径方向深さとすることで、内輪１０の端面の平坦面幅の減少も最小限に抑えることがきる。これにより、内輪１０の端面と等速ジョイント外輪１６の段面１６ｂの接触面圧が大きくなることが回避され、実車における摩耗や異音発生の原因が解消される。 Further, the plastic deformation portion 12 of the hub wheel 9 faces only the surface 10ba facing the inboard side in the step portion 10b of the inner ring 10 and is separated from the inner diameter surface of the step portion 10b. The deformation of the inner ring 10 accompanying the plastic deformation process 12 and the hoop stress generated in the inner ring 10 can be minimized.
Even if the inner ring 10 is provided with the stepped portion 10b, the reduction in the flat surface width of the end surface of the inner ring 10 can be minimized by setting the stepped portion 10b to the minimum necessary radial depth. Thereby, it is avoided that the contact surface pressure between the end surface of the inner ring 10 and the step surface 16b of the constant velocity joint outer ring 16 is increased, and causes of wear and noise generation in the actual vehicle are eliminated.

なお、上記実施形態では、ハブ輪９の環状凹部１１を、ハブ輪９の外径面に対して垂直な両側面を有する断面方形状のものとしたが、これに限らず、図３のように例えばインボード側に向く側面が円弧状となった環状凹部１１としても良い。このように環状凹部１１の一方の側面を断面円弧状とすることにより、ハブ輪９の端部の塑性加工において前記環状凹部１１に応力が集中するのを緩和できる。   In the above embodiment, the annular recess 11 of the hub wheel 9 has a rectangular cross section having both side surfaces perpendicular to the outer diameter surface of the hub wheel 9, but the present invention is not limited to this, as shown in FIG. For example, it is good also as the annular recessed part 11 by which the side surface facing an inboard side became circular arc shape. Thus, by making one side surface of the annular recess 11 in a circular arc shape, it is possible to alleviate stress concentration in the annular recess 11 in the plastic working of the end portion of the hub wheel 9.

（Ａ）はこの発明の第１の実施形態にかかる車輪用軸受装置の断面図、（Ｂ）は（Ａ）におけるＭ部の拡大断面図である。(A) is sectional drawing of the wheel bearing apparatus concerning 1st Embodiment of this invention, (B) is an expanded sectional view of the M section in (A). 同車輪用軸受装置におけるハブ輪の塑性加工の説明図である。It is explanatory drawing of the plastic working of the hub ring in the bearing device for the wheels. 同車輪用軸受装置におけるハブ輪塑性加工部分の変形例を示す部分拡大断面図である。It is a partial expanded sectional view which shows the modification of the hub ring plastic processing part in the bearing apparatus for wheels. 同車輪用軸受装置におけるハブ輪塑性加工部分の他の変形例を示す部分拡大断面図である。It is a partial expanded sectional view which shows the other modification of the hub ring plastic processing part in the bearing apparatus for wheels. 従来例の断面図である。It is sectional drawing of a prior art example.

符号の説明Explanation of symbols

１…外方部材
２…内方部材
３，４…転走面
５…転動体
９…ハブ輪
９ａ…車輪取付用のフランジ
１０…内輪
１０ａ…内径面
１０ｂ…段部
１０ｂａ…端面
１１…環状凹部
１２…塑性変形部分 DESCRIPTION OF SYMBOLS 1 ... Outer member 2 ... Inner member 3, 4 ... Rolling surface 5 ... Rolling body 9 ... Hub wheel 9a ... Wheel mounting flange 10 ... Inner ring 10a ... Inner diameter surface 10b ... Step part 10ba ... End surface 11 ... Annular recessed part 12 ... Plastic deformation part

Claims (5)

内周に複列の転走面を有する外方部材と、前記各転走面に対向する転走面を外周に有する内方部材と、これら対向する転走面の間に介在した複列の転走面を有する転動体とを備え、前記内方部材が車輪取付用のフランジを有するハブ輪とこのハブ輪のインボード側部の外周に嵌合した内輪とでなり、前記ハブ輪および内輪に各列の前記転走面が形成され、車体に対して駆動輪となる車輪を回転自在に支持する車輪用軸受装置において、
前記ハブ輪のインボード側端の付近の外周に環状凹部を設け、前記ハブ輪の前記環状凹部よりもインボード側の部分を外径側へ塑性変形させてその塑性変形部分を前記内輪のインボード側を向く面に対向させることにより、内輪を抜け止めを行ったことを特徴とする車輪用軸受装置。 An outer member having a plurality of rolling surfaces on the inner periphery, an inner member having a rolling surface facing each of the rolling surfaces on the outer periphery, and a double row interposed between the facing rolling surfaces. A hub ring having a rolling element having a rolling surface, the inner member having a wheel mounting flange, and an inner ring fitted to an outer periphery of an inboard side portion of the hub ring. In the wheel bearing device, in which the rolling surfaces of each row are formed and the wheels serving as driving wheels are rotatably supported with respect to the vehicle body,
An annular recess is provided on the outer periphery of the hub wheel in the vicinity of the inboard side end, and a portion of the hub wheel on the inboard side of the annular recess is plastically deformed to the outer diameter side, and the plastically deformed portion is inserted into the inner ring of the inner ring. A bearing device for a wheel, wherein the inner ring is prevented from coming off by facing the surface facing the board side. 請求項１において、前記塑性変形部分を前記内輪のインボード側を向く面に押し付けた車輪用軸受装置。   The wheel bearing device according to claim 1, wherein the plastically deformed portion is pressed against a surface of the inner ring facing the inboard side. 請求項１において、前記塑性変形部分と前記内輪のインボード側を向く面との間に隙間を有する車輪用軸受装置。   The wheel bearing device according to claim 1, wherein a gap is provided between the plastically deformed portion and a surface facing the inboard side of the inner ring. 請求項１ないし請求項３のいずれか１項において、内輪の内径面におけるインボード側端の全周に、前記内径面よりも大径となる段部を設け、前記ハブ輪の前記塑性変形部分を前記内輪の前記段部内におけるインボード側を向く面のみに係合させた車輪用軸受装置。   4. The plastic deformation portion of the hub ring according to claim 1, wherein a stepped portion having a larger diameter than the inner diameter surface is provided on the entire circumference of the inboard side end of the inner diameter surface of the inner ring, and the hub ring has the plastic deformation portion. A wheel bearing device in which the inner ring is engaged only with the surface facing the inboard side in the step portion of the inner ring. 請求項１ないし請求項４のいずれか１項において、前記ハブ輪の前記塑性変形部分が、前記内輪よりもインボード側へ突出しないものとした車輪用軸受装置。   5. The wheel bearing device according to claim 1, wherein the plastically deformed portion of the hub ring does not protrude toward the inboard side from the inner ring. 6.
JP2004354798A 2004-10-08 2004-12-08 Wheel bearing device Expired - Fee Related JP4628766B2 (en)

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US11/663,850 US7883272B2 (en) 2004-10-08 2005-09-12 Wheel support bearing assembly
DE112005002498T DE112005002498T5 (en) 2004-10-08 2005-09-12 Wheel support bearing assembly
PCT/JP2005/016738 WO2006040897A1 (en) 2004-10-08 2005-09-12 Bearing device for wheel

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007024131A (en) * 2005-07-14 2007-02-01 Ntn Corp Bearing device for wheel and caulking method therefor
JP2007153105A (en) * 2005-12-05 2007-06-21 Ntn Corp Wheel bearing device, and its manufacturing method
JP2008082350A (en) * 2006-09-25 2008-04-10 Jtekt Corp Wheel rolling bearing device
WO2008087857A1 (en) * 2007-01-17 2008-07-24 Ntn Corporation Bearing device for wheel and method for manufacturing the same
JP2008190692A (en) * 2007-02-07 2008-08-21 Nsk Ltd Method for manufacturing bearing device
US7874734B2 (en) 2005-06-02 2011-01-25 Ntn Corporation Wheel support bearing assembly
US7883272B2 (en) 2004-10-08 2011-02-08 Ntn Corporation Wheel support bearing assembly
US8745874B2 (en) 2005-12-05 2014-06-10 Ntn Corporation Method of manufacturing wheel support bearing assembly
DE112007001819B4 (en) 2006-08-08 2018-06-14 Ntn Corp. wheel bearing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164803A (en) * 1995-12-15 1997-06-24 Nippon Seiko Kk Driving wheel supporting hub unit
JPH1095203A (en) * 1996-09-25 1998-04-14 Nippon Seiko Kk Rolling bearing unit for supporting wheel
JP2001001710A (en) * 1999-06-18 2001-01-09 Ntn Corp Axle bearing
JP2002283804A (en) * 2001-03-29 2002-10-03 Ntn Corp Bearing device for drive axle
JP2006105343A (en) * 2004-10-08 2006-04-20 Ntn Corp Bearing device for wheel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09164803A (en) * 1995-12-15 1997-06-24 Nippon Seiko Kk Driving wheel supporting hub unit
JPH1095203A (en) * 1996-09-25 1998-04-14 Nippon Seiko Kk Rolling bearing unit for supporting wheel
JP2001001710A (en) * 1999-06-18 2001-01-09 Ntn Corp Axle bearing
JP2002283804A (en) * 2001-03-29 2002-10-03 Ntn Corp Bearing device for drive axle
JP2006105343A (en) * 2004-10-08 2006-04-20 Ntn Corp Bearing device for wheel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7883272B2 (en) 2004-10-08 2011-02-08 Ntn Corporation Wheel support bearing assembly
US7874734B2 (en) 2005-06-02 2011-01-25 Ntn Corporation Wheel support bearing assembly
JP4526455B2 (en) * 2005-07-14 2010-08-18 Ｎｔｎ株式会社 Wheel bearing device and caulking method thereof
JP2007024131A (en) * 2005-07-14 2007-02-01 Ntn Corp Bearing device for wheel and caulking method therefor
JP2007153105A (en) * 2005-12-05 2007-06-21 Ntn Corp Wheel bearing device, and its manufacturing method
US8745874B2 (en) 2005-12-05 2014-06-10 Ntn Corporation Method of manufacturing wheel support bearing assembly
DE112007001819B4 (en) 2006-08-08 2018-06-14 Ntn Corp. wheel bearing device
JP2008082350A (en) * 2006-09-25 2008-04-10 Jtekt Corp Wheel rolling bearing device
WO2008087857A1 (en) * 2007-01-17 2008-07-24 Ntn Corporation Bearing device for wheel and method for manufacturing the same
JP2008175262A (en) * 2007-01-17 2008-07-31 Ntn Corp Wheel bearing device and its manufacturing method
US8221004B2 (en) 2007-01-17 2012-07-17 Ntn Corporation Method of making wheel support bearing
JP2008190692A (en) * 2007-02-07 2008-08-21 Nsk Ltd Method for manufacturing bearing device
JP4552951B2 (en) * 2007-02-07 2010-09-29 日本精工株式会社 Manufacturing method of bearing device

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