JP2009241615A - Wheel bearing device - Google Patents

Wheel bearing device Download PDF

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JP2009241615A
JP2009241615A JP2008087093A JP2008087093A JP2009241615A JP 2009241615 A JP2009241615 A JP 2009241615A JP 2008087093 A JP2008087093 A JP 2008087093A JP 2008087093 A JP2008087093 A JP 2008087093A JP 2009241615 A JP2009241615 A JP 2009241615A
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inner ring
wheel
hub
hub shaft
spline
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Takeshi Kamikawa
剛 上川
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JTEKT Corp
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JTEKT Corp
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Priority to JP2008087093A priority Critical patent/JP2009241615A/en
Priority to EP20090004376 priority patent/EP2105321B1/en
Priority to US12/385,085 priority patent/US8052332B2/en
Publication of JP2009241615A publication Critical patent/JP2009241615A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel bearing device capable of sufficiently transmitting torque between a hub wheel and an outer ring of a constant velocity joint and having a high safety ratio relative to shearing force by rotation torque. <P>SOLUTION: In the vehicle bearing device 10, an inner ring 22 of an obliquely contact type double-row ball bearing 20 is fitted to an outer periphery of the hub shaft 14 of a hub wheel 12 mounted with a wheel, the hub shaft 14 and the outer ring 32 of the constant velocity joint 30 are torque-transmissibly connected to each other, and an end part of the inner ring 22 and an end part of the outer ring 32 of the constant velocity joint 30 are engaged with each other by engagement of face splines 29, 35. An inner peripheral surface of the inner ring 22 and the outer peripheral surface of the hub shaft 14 of the hub wheel 12 are spline-fitted. Further, the spline fitting part formed at a position out of a contact line of a roller 21 having a raceway surface on the inner ring 22 to an inner side in an axial direction. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

この発明は車輪用軸受装置に関する。具体的には、車輪が取付けられるハブホイールのハブ軸の外周に斜接型転がり軸受が設けられ、ハブ軸と等速ジョイントの外輪とがトルク伝達可能に連結された車輪用軸受装置に関する。   The present invention relates to a wheel bearing device. More specifically, the present invention relates to a wheel bearing device in which an oblique contact type rolling bearing is provided on the outer periphery of a hub shaft of a hub wheel to which a wheel is attached, and the hub shaft and an outer ring of a constant velocity joint are connected so as to be able to transmit torque.

車輪用軸受装置には、ハブホイールのハブ軸の外周に斜接型転がり軸受の内輪が嵌合され、ハブ軸と等速ジョイントの外輪がボルトで結合されたものがある。
図３にこの種の車輪用軸受装置１１０を示す。車輪用軸受装置１１０は、ハブホイール１１２のハブ軸１１４の外周に斜接型転がり軸受である複列玉軸受１２０の内輪１２２が嵌合されている。そして、複列玉軸受１２０はハブ軸１１４と複列玉軸受１２０の内輪１２２を内輪軌道面としており、ハブ軸１１４と内輪１２２は、ハブ軸１１４の端部１１５が複列玉軸受１２０の内輪１２２の端部１２８にカシメ固定され、一体化されている。
また、ハブホイール１１２と等速ジョイント１３０とをトルク伝達可能に接続するために、ハブ軸１１４の端部１１５に形成されたカシメ部１１６と等速ジョイント１３０の外輪１３２のアウター側の端面１３４に、相互に噛み合うフェーススプライン１１７、１３５が形成されている。そして、ハブ軸１１４と等速ジョイント１３０の外輪１３２がボルト１４０によって連結され、ナット１４２によって締結固定されることにより、フェーススプライン１１７、１３５が噛み合わされ係合されている。 In some wheel bearing devices, an inner ring of a slanted rolling bearing is fitted on the outer periphery of a hub shaft of a hub wheel, and the outer ring of a constant velocity joint is connected to the hub shaft by a bolt.
FIG. 3 shows this type of wheel bearing device 110. In the wheel bearing device 110, an inner ring 122 of a double row ball bearing 120 that is an oblique contact type rolling bearing is fitted to the outer periphery of the hub shaft 114 of the hub wheel 112. The double row ball bearing 120 has the hub shaft 114 and the inner ring 122 of the double row ball bearing 120 as the inner raceway surface. The hub shaft 114 and the inner ring 122 have an end 115 of the hub shaft 114 at the inner ring of the double row ball bearing 120. The end portion 128 of 122 is fixed by caulking and integrated.
Further, in order to connect the hub wheel 112 and the constant velocity joint 130 so that torque can be transmitted, the caulking portion 116 formed on the end portion 115 of the hub shaft 114 and the outer side end surface 134 of the outer ring 132 of the constant velocity joint 130 are provided. , Face splines 117 and 135 meshing with each other are formed. The hub shaft 114 and the outer ring 132 of the constant velocity joint 130 are connected by a bolt 140 and fastened and fixed by a nut 142, whereby the face splines 117 and 135 are engaged and engaged.

先行技術文献として、特願昭６２−１９４９０３号公報（特許文献１）がある。特許文献１には、軸受の内レース（２２）と外継手部材（７）に設けた端面に千鳥プレスによる歯列（１６）を形成して、軸受の内レース（２２）と外継手部材（７）をトルク伝達可能に接続する方法が記載されている。
特開昭６２−１９４９０３号公報 As a prior art document, there is Japanese Patent Application No. 62-194903 (Patent Document 1). In Patent Document 1, a tooth row (16) formed by a staggered press is formed on end faces provided on an inner race (22) and an outer joint member (7) of a bearing, and an inner race (22) of the bearing and an outer joint member ( 7) describes a method of connecting the torque transmission capability.
JP-A-62-194903

ところで、車輪用軸受装置１１０では、ハブ軸１１４の端部１１５に塑性変形により形成されたカシメ部１１６にフェーススプライン１１７を形成しているため、より大きな回転トルクを伝達するためには、回転トルクによるフェーススプライン１１７の歯面へのせん断応力に対して強度を確保するために、フェーススプライン１１７を大型化する必要があり、車輪用軸受装置を小型軽量化することが出来ない。   By the way, in the wheel bearing device 110, the face spline 117 is formed in the caulking portion 116 formed by plastic deformation at the end portion 115 of the hub shaft 114. Therefore, in order to transmit a larger rotational torque, the rotational torque Therefore, it is necessary to increase the size of the face spline 117 in order to secure the strength against the shearing stress on the tooth surface of the face spline 117, and the wheel bearing device cannot be reduced in size and weight.

そこで、本発明が解決しようとする課題は、小型軽量でありながらハブ軸と等速ジョイントの外輪との間で良好にトルクを伝達することができ、回転トルクによるせん断応力に対して安全率の高い車輪用軸受装置を提供することである。   Thus, the problem to be solved by the present invention is that the torque can be transmitted well between the hub shaft and the outer ring of the constant velocity joint while being small and light, and the safety factor is low with respect to the shear stress due to the rotational torque. It is to provide a high wheel bearing device.

上記課題を解決するため、本発明は次の手段をとる。
まず、本発明の第１の発明は、車輪が取付けられるハブホイールのハブ軸の外周に斜接型転がり軸受の内輪が嵌合され、ハブ軸と等速ジョイントの外輪とがトルク伝達可能に連結され、内輪の端部と等速ジョイントの外輪の端部とがフェーススプラインの噛み合いにより係合された、車両用軸受装置において、
前記内輪の内周面と前記ハブホイールのハブ軸の外周面とがスプライン嵌合されており、該内輪と該ハブ軸のスプライン嵌合部は、内輪に軌道面を持つ転動体の接触線上から軸方向でインナー側に外れた位置に形成されていることを特徴とする。 In order to solve the above problems, the present invention takes the following means.
First, according to the first aspect of the present invention, the inner ring of the oblique contact type rolling bearing is fitted to the outer periphery of the hub shaft of the hub wheel to which the wheel is mounted, and the hub shaft and the outer ring of the constant velocity joint are connected so as to transmit torque. In the vehicle bearing device in which the end portion of the inner ring and the end portion of the outer ring of the constant velocity joint are engaged by meshing of the face spline,
The inner peripheral surface of the inner ring and the outer peripheral surface of the hub shaft of the hub wheel are spline-fitted, and the spline-fitting portion of the inner ring and the hub shaft is from above the contact line of a rolling element having a raceway surface on the inner ring. It is characterized by being formed at a position deviated from the inner side in the axial direction.

この第１の発明によれば、等速ジョイント側のトルクは、等速ジョイントの外輪の端面と斜接型転がり軸受の内輪の端面のフェーススプラインの噛み合いによる係合により内輪に伝達される。そして内輪に伝達されたトルクは、内輪の内周面とハブホイールのハブ軸の外周面とのスプライン嵌合部によりハブ軸に伝達される。よって、等速ジョイントからハブ軸へ良好にトルクを伝達することができる。また、内輪の熱処理により、フェーススプラインの強度を高めることができる。
そして、内輪の内周面とハブホイールのハブ軸の外周面のスプライン嵌合部は、斜接型転がり軸受の内輪に軌道面を持つ転動体の接触線上から軸方向でインナー側に外れた位置に形成されているので、転動体の転動時の荷重がスプライン嵌合部にかかることがなく、斜接型転がり軸受の転動体の動作が安定する。 According to the first aspect of the invention, the torque on the constant velocity joint side is transmitted to the inner ring by the engagement of the end surface of the outer ring of the constant velocity joint and the face spline of the end surface of the inner ring of the oblique contact type rolling bearing. The torque transmitted to the inner ring is transmitted to the hub shaft by a spline fitting portion between the inner peripheral surface of the inner ring and the outer peripheral surface of the hub shaft of the hub wheel. Therefore, it is possible to satisfactorily transmit torque from the constant velocity joint to the hub shaft. Further, the strength of the face spline can be increased by heat treatment of the inner ring.
And the spline fitting part of the inner peripheral surface of the inner ring and the outer peripheral surface of the hub axle of the hub wheel is a position that is axially dislocated from the contact line of the rolling element having the raceway surface to the inner ring of the oblique contact type rolling bearing. Therefore, the load at the time of rolling of the rolling element is not applied to the spline fitting portion, and the operation of the rolling element of the oblique contact type rolling bearing is stabilized.

次に、本発明の第２の発明は、上記第１の発明に係る車輪用軸受装置であって、
前記斜接型転がり軸受は複列転がり軸受であって、一方の内輪軌道面が前記内輪に形成され、他方の内輪軌道面が前記ハブ軸の外周面に形成されており、
前記内輪のインナー側の側部が径方向外方へ延設形成され、前記ハブ軸のインナー側端部が前記複列転がり軸受の内輪のインナー側端面にカシメ固定され、該カシメ固定位置よりも該内輪の径方向の外側において、該内輪の端部と前記等速ジョイントの外輪の端部とがスプライン係合されることを特徴とする。 Next, a second invention of the present invention is the wheel bearing device according to the first invention,
The oblique contact type rolling bearing is a double row rolling bearing, wherein one inner ring raceway surface is formed on the inner ring, and the other inner ring raceway surface is formed on the outer peripheral surface of the hub shaft,
An inner side side portion of the inner ring is formed to extend radially outward, and an inner side end portion of the hub shaft is caulked and fixed to an inner side end surface of the inner ring of the double row rolling bearing. An outer end of the inner ring in the radial direction is spline-engaged with an end of the inner ring and an end of the outer ring of the constant velocity joint.

この第２の発明によれば、ハブ軸のインナー側の端部が複列転がり軸受の内輪のインナー側の端面にカシメ固定されているので、ハブ軸と内輪の軸方向の緩みが抑止され、複列転がり軸受の内輪の軌道面が安定する。そして、内輪の端面のフェーススプラインが形成された部位は、車輪用軸受装置の組立時にカシメ等による塑性変形を受けることがない。そこで、組立前に内輪を熱処理してフェーススプラインの歯面の強度を高めておくことができる。よって、スプラインが形成された部位の強度が高く、良好にトルクを伝達でき、回転トルクによるせん断応力に対して安全率が高い。
また、内輪のインナー側の側部が径方向外方へ延設形成され、カシメ固定位置よりも内輪の径方向の外側で、内輪の端面と等速ジョイントの外輪の端面とがフェーススプラインの噛み合いにより係合する。そこで、フェーススプラインの径が拡大するためトルクの伝達力が向上し、せん断応力対する安全率を高めることができる。 According to the second aspect of the invention, since the end portion on the inner side of the hub shaft is caulked and fixed to the end surface on the inner side of the inner ring of the double row rolling bearing, loosening of the hub shaft and the inner ring in the axial direction is suppressed, The raceway surface of the inner ring of the double row rolling bearing is stabilized. And the site | part in which the face spline of the end surface of the inner ring | wheel was formed does not receive plastic deformation by caulking etc. at the time of the assembly of the wheel bearing apparatus. Therefore, the inner ring can be heat-treated before assembly to increase the strength of the tooth surface of the face spline. Therefore, the strength of the portion where the spline is formed is high, torque can be transmitted satisfactorily, and the safety factor is high against the shear stress due to the rotational torque.
In addition, the inner ring side portion of the inner ring is formed to extend radially outward, and the end surface of the inner ring and the end surface of the outer ring of the constant velocity joint are engaged with the face spline on the outer side of the inner ring in the radial direction from the caulking fixing position. To engage. Therefore, since the diameter of the face spline is increased, the torque transmission force is improved, and the safety factor against shear stress can be increased.

上記本発明の各発明によれば、次の効果が得られる。
まず、上述の第１の発明によれば、等速ジョイント側のトルクは、フェーススプラインの噛み合いによる係合により内輪に伝達される。そして内輪に伝達されたトルクは、内輪とハブ軸のスプライン嵌合部によりハブ軸に伝達される。よって、等速ジョイントからハブ軸へ良好にトルクを伝達することができる。また、内輪の熱処理により、フェーススプラインの強度を高めることができる。そして、内輪の内周面とハブホイールのハブ軸の外周面のスプライン嵌合部は、斜接型転がり軸受の内輪に軌道面を持つ転動体の接触線上から軸方向でインナー側に外れた位置に形成されているので、転動体の転動時の荷重がスプライン嵌合部にかかることがなく、斜接型転がり軸受の転動体の動作が安定する。
次に上述の第２の発明によれば、ハブ軸のインナー側の端部が複列転がり軸受の内輪のインナー側の端面にカシメ固定されているので、ハブ軸と内輪の軸方向の緩みが抑止され、複列転がり軸受の内輪の軌道面が安定する。そして、内輪の端面のフェーススプラインが形成された部位は、車輪用軸受装置の組立時にカシメ等による塑性変形を受けることがない。そこで、組立前に内輪を熱処理してフェーススプラインの歯面の強度を高めておくことができる。よって、フェーススプラインが形成された部位の強度が高く、良好にトルクを伝達でき、回転トルクによるせん断応力に対して安全率が高い。また、内輪のインナー側の側部が径方向外方へ延設形成され、カシメ固定位置よりも内輪の径方向の外側で、内輪の端面と等速ジョイントの外輪の端面とがフェーススプラインの噛み合いにより係合する。そこで、フェーススプラインの径が拡大するためトルクの伝達力が向上し、せん断応力対する安全率を高めることができる。 According to each invention of the present invention, the following effects can be obtained.
First, according to the first invention described above, the torque on the constant velocity joint side is transmitted to the inner ring by the engagement by the meshing of the face spline. The torque transmitted to the inner ring is transmitted to the hub shaft by the spline fitting portion between the inner ring and the hub shaft. Therefore, it is possible to satisfactorily transmit torque from the constant velocity joint to the hub shaft. Further, the strength of the face spline can be increased by heat treatment of the inner ring. And the spline fitting part of the inner peripheral surface of the inner ring and the outer peripheral surface of the hub axle of the hub wheel is a position that is axially dislocated from the contact line of the rolling element having the raceway surface to the inner ring of the oblique contact type rolling bearing. Therefore, the load at the time of rolling of the rolling element is not applied to the spline fitting portion, and the operation of the rolling element of the oblique contact type rolling bearing is stabilized.
Next, according to the second invention described above, the inner end of the hub shaft is caulked and fixed to the inner end surface of the inner ring of the double row rolling bearing, so that the hub shaft and the inner ring are loosened in the axial direction. It is restrained and the raceway surface of the inner ring of the double row rolling bearing is stabilized. And the site | part in which the face spline of the end surface of the inner ring | wheel was formed does not receive plastic deformation by caulking etc. at the time of the assembly of the wheel bearing apparatus. Therefore, the inner ring can be heat-treated before assembly to increase the strength of the tooth surface of the face spline. Therefore, the strength of the portion where the face spline is formed is high, torque can be transmitted satisfactorily, and the safety factor is high against the shear stress caused by the rotational torque. In addition, the inner ring side portion of the inner ring is formed to extend radially outward, and the end surface of the inner ring and the end surface of the outer ring of the constant velocity joint are engaged with the face spline on the outer side of the inner ring in the radial direction from the caulking fixing position. To engage. Therefore, since the diameter of the face spline is increased, the torque transmission force is improved, and the safety factor against shear stress can be increased.

以下、本発明を実施するための最良の形態について説明する。
図１に本発明の一実施例における車輪用軸受装置１０の軸平行断面図を示す。車輪用軸受装置１０は、ハブホイール１２のハブ軸１４の外周に斜接型転がり軸受である複列玉軸受２０の内輪２２が嵌合されており、複列玉軸受２０はハブ軸１４の外周と複列玉軸受２０の内輪２２に内輪の軌道面２４を有している。また、複列玉軸受２０は、車体のナックル５１に取付けられた外輪５２を有している。
そして、ハブ軸１４の外周面と内輪２２の内周面には相互に嵌合するスプライン１８、２３が形成されており、ハブ軸１４と内輪２２の相対的な回転が抑止されている。なお、ハブ軸１４の外周面のスプライン１８と内輪２２の内周面のスプライン２３の嵌合部は、複列玉軸受２０の内輪２２に軌道面２４を持つ玉２１の接触線５０上から軸方向でインナー側に外れた位置に形成されている。
そして、ハブ軸１４と内輪２２は、ハブ軸１４の端部１５が内輪２２の端面２８にカシメ固定されたカシメ部１６により、軸方向での緩みが抑止されている。
なお、このカシメ部１６は、円筒形状に形成されたハブ軸１４の端部１５をプレス加工により径方向外方に拡形させて内輪２２の端面２８に押し付けることにより形成されている。 Hereinafter, the best mode for carrying out the present invention will be described.
FIG. 1 shows an axial parallel sectional view of a wheel bearing device 10 in one embodiment of the present invention. In the wheel bearing device 10, an inner ring 22 of a double row ball bearing 20, which is an oblique contact type rolling bearing, is fitted to the outer periphery of the hub shaft 14 of the hub wheel 12. The inner ring 22 of the double row ball bearing 20 has a raceway surface 24 of the inner ring. The double-row ball bearing 20 has an outer ring 52 attached to a knuckle 51 of the vehicle body.
Splines 18 and 23 are formed on the outer peripheral surface of the hub shaft 14 and the inner peripheral surface of the inner ring 22, so that relative rotation between the hub shaft 14 and the inner ring 22 is suppressed. The fitting portion between the spline 18 on the outer peripheral surface of the hub shaft 14 and the spline 23 on the inner peripheral surface of the inner ring 22 is formed on the contact line 50 of the ball 21 having the raceway surface 24 on the inner ring 22 of the double row ball bearing 20. It is formed at a position deviating from the inner side in the direction.
The hub shaft 14 and the inner ring 22 are prevented from loosening in the axial direction by the crimping portion 16 in which the end portion 15 of the hub shaft 14 is fixed by crimping to the end surface 28 of the inner ring 22.
The caulking portion 16 is formed by expanding the end portion 15 of the hub shaft 14 formed in a cylindrical shape outwardly in the radial direction by pressing and pressing the end portion 28 against the end surface 28 of the inner ring 22.

また、複列玉軸受２０の内輪２２はインナー側の側部２６がハブ軸１４の端部１５がカシメ固定された部位よりも径方向外方へ延設形成されている。そして、延設成形された側部２６の端面２８には、ハブ軸１４の端部１５がカシメ固定された部位の径方向の外側にフェーススプライン２９が形成されている。
また、等速ジョイント３０の外輪３２のアウター側の端面３４には、内輪２２の端面２８に形成されたフェーススプライン２９と噛み合うフェーススプライン３５が形成されている。 Further, the inner ring 22 of the double row ball bearing 20 is formed such that the inner side portion 26 extends radially outward from the portion where the end 15 of the hub shaft 14 is fixed by crimping. A face spline 29 is formed on the end surface 28 of the extended side portion 26 on the outer side in the radial direction of the portion where the end portion 15 of the hub shaft 14 is fixed by caulking.
A face spline 35 that meshes with a face spline 29 formed on the end surface 28 of the inner ring 22 is formed on the outer end surface 34 of the outer ring 32 of the constant velocity joint 30.

そして、等速ジョイント３０の外輪３２のアウター側の中心部に形成された貫通孔３６とハブホイール１２の中心部に形成された貫通孔１３に等速ジョイント３０の外輪３２側からボルト４０が挿通されている。そして、ボルト４０にはハブ軸１４のアウター側でナット４２が螺着されて、ハブホイール１２のハブ軸１４と等速ジョイント３０の外輪３２が軸方向で締結固定されている。そして、ハブ軸１４に外嵌めされた内輪２２の端面２８のフェーススプライン２９と等速ジョイント３０の外輪３２の端面３４のフェーススプライン３５が噛み合って係合している。
なお、ハブ軸１４のカシメ部１６と等速ジョイント３０の外輪３２の端面３４の間には固定および密閉用にＯリング４４を装着している。 Then, the bolt 40 is inserted from the outer ring 32 side of the constant velocity joint 30 into the through hole 36 formed in the center portion of the outer ring 32 of the constant velocity joint 30 and the through hole 13 formed in the center portion of the hub wheel 12. Has been. A nut 42 is screwed onto the bolt 40 on the outer side of the hub shaft 14, and the hub shaft 14 of the hub wheel 12 and the outer ring 32 of the constant velocity joint 30 are fastened and fixed in the axial direction. The face spline 29 on the end face 28 of the inner ring 22 fitted on the hub axle 14 and the face spline 35 on the end face 34 of the outer ring 32 of the constant velocity joint 30 are engaged with each other.
An O-ring 44 is mounted between the caulking portion 16 of the hub shaft 14 and the end face 34 of the outer ring 32 of the constant velocity joint 30 for fixing and sealing.

上記の実施例によれば、等速ジョイント３０側のトルクは、等速ジョイント３０の外輪３２の端面３４のフェーススプライン３５と複列玉軸受２０の内輪２２の端面２８のフェーススプライン２３の噛み合いによる係合により内輪２２に伝えられる。そして内輪２２に伝えられたトルクは、内輪２２の内周面に形成されたスプライン２３とハブホイール１２のハブ軸１４の外周面に形成されたスプライン１８との嵌合部によりハブ軸１４に伝達される。
ここで、内輪２２の端面２８のフェーススプライン２９が形成された部位は、カシメ部１６のように塑性変形させる必要もなく、また、転がり軸受の内輪２２としての強度を有するために、フェーススプライン２９を形成した後で、内輪２２全体を熱処理することで、車輪用軸受装置１０の組立前にフェーススプライン２９の歯面の強度を高めてある。よって、フェーススプラインが形成された部位の強度が高く、良好にトルクを伝達できるので、車輪用軸受装置１０は回転トルクによるせん断応力に対して安全率が高い。 According to the above embodiment, the torque on the constant velocity joint 30 side is caused by the meshing of the face spline 35 on the end surface 34 of the outer ring 32 of the constant velocity joint 30 and the face spline 23 on the end surface 28 of the inner ring 22 of the double row ball bearing 20. It is transmitted to the inner ring 22 by engagement. The torque transmitted to the inner ring 22 is transmitted to the hub shaft 14 by a fitting portion between the spline 23 formed on the inner peripheral surface of the inner ring 22 and the spline 18 formed on the outer peripheral surface of the hub shaft 14 of the hub wheel 12. Is done.
Here, the portion of the end surface 28 of the inner ring 22 where the face spline 29 is formed does not need to be plastically deformed unlike the caulking portion 16 and has strength as the inner ring 22 of the rolling bearing. After forming, the entire inner ring 22 is heat-treated to increase the strength of the tooth surface of the face spline 29 before the assembly of the wheel bearing device 10. Therefore, the strength of the portion where the face spline is formed is high and torque can be transmitted satisfactorily, so the wheel bearing device 10 has a high safety factor against shear stress due to rotational torque.

また、内輪２２のインナー側の側部２６は径方向外方へ延設形成され、ハブ軸１４の端部１５のカシメ部１６がカシメ固定された位置よりも内輪２２の径方向の外側で、内輪２２の端面２８と等速ジョイント３０の外輪３２の端面３４とがフェーススプライン２９，３５により噛み合って係合している。よって、フェーススプラインの径の拡大によりトルクの伝達力が向上し、せん断応力に対する安全率を高めることができる。   Further, the inner side side portion 26 of the inner ring 22 is formed to extend outward in the radial direction, and on the outer side in the radial direction of the inner ring 22 from the position where the crimping portion 16 of the end portion 15 of the hub shaft 14 is fixed. The end surface 28 of the inner ring 22 and the end surface 34 of the outer ring 32 of the constant velocity joint 30 are engaged with and engaged with the face splines 29 and 35. Therefore, the transmission force of torque is improved by increasing the diameter of the face spline, and the safety factor against shear stress can be increased.

また、上記の実施例によれば、内輪２２の内周面とハブホイール１２のハブ軸１４の外周面のスプライン嵌合部は、複列玉軸受２０の内輪２２に軌道面２４を持つ玉２１の接触線５０上から軸方向でインナー側に外れた位置に形成されているので、複列玉軸受２０の玉２１の転動時の荷重がスプライン嵌合部にかかることがなく、複列玉軸受２０の玉２１の動作が安定する。
さらに、ハブ軸１４のインナー側の端部１５が複列玉軸受２０の内輪２２のインナー側の端面２８にカシメ固定されているので、ハブ軸１４と内輪２２の軸方向の緩みが抑止され、複列玉軸受２０の内輪２２の軌道面２４が安定する。 Further, according to the above embodiment, the spline fitting portion between the inner peripheral surface of the inner ring 22 and the outer peripheral surface of the hub axle 14 of the hub wheel 12 is a ball 21 having a raceway surface 24 on the inner ring 22 of the double row ball bearing 20. Is formed at a position deviated from the contact line 50 to the inner side in the axial direction, so that the load at the time of rolling of the ball 21 of the double row ball bearing 20 is not applied to the spline fitting portion, and the double row ball The operation of the ball 21 of the bearing 20 is stabilized.
Furthermore, since the end 15 on the inner side of the hub shaft 14 is caulked and fixed to the end surface 28 on the inner side of the inner ring 22 of the double row ball bearing 20, loosening in the axial direction between the hub shaft 14 and the inner ring 22 is suppressed, The raceway surface 24 of the inner ring 22 of the double row ball bearing 20 is stabilized.

上記の実施例では、ボルト４０とナット４２によりハブホイール１２のハブ軸１４と等速ジョイント３０の外輪３２をトルク伝達可能に連結しているが、等速ジョイント３０の外輪３２に軸部を一体形成して、軸部をハブ軸１４の貫通孔１３にスプライン嵌合させて挿通し、アウター側で軸部の端をハブ軸１４の貫通孔１３の側部にカシメ固定する構成としても良い。   In the above embodiment, the hub shaft 14 of the hub wheel 12 and the outer ring 32 of the constant velocity joint 30 are connected by the bolt 40 and the nut 42 so that torque can be transmitted, but the shaft portion is integrated with the outer ring 32 of the constant velocity joint 30. The shaft portion may be spline-fitted into the through hole 13 of the hub shaft 14 and inserted, and the end of the shaft portion may be caulked and fixed to the side portion of the through hole 13 of the hub shaft 14 on the outer side.

また、上記の実施例では、ハブ軸１４のインナー側の端部１５を複列玉軸受２０の内輪２２のインナー側の端面２８にカシメ固定しているが、ハブ軸１４のインナー側の端部１５をカシメ固定せずに、等速ジョイント３０の外輪３２の端面３４に当接させる構成としても良い。
ハブ軸１４の端部１５をカシメ固定をしない場合は、内輪２２のインナー側の側部２６のインナー側端面２８の全体にフェーススプライン２９を形成しても良い。この場合は、内輪２２の側部２６を径方向外方へ延設しない構成としても良い。 In the above-described embodiment, the inner end 15 of the hub shaft 14 is caulked and fixed to the inner end surface 28 of the inner ring 22 of the double row ball bearing 20. However, the inner end of the hub shaft 14 is fixed. 15 may be configured to abut on the end face 34 of the outer ring 32 of the constant velocity joint 30 without being crimped.
When the end portion 15 of the hub axle 14 is not caulked and fixed, the face spline 29 may be formed on the entire inner end surface 28 of the inner side portion 26 of the inner ring 22. In this case, the side portion 26 of the inner ring 22 may be configured not to extend radially outward.

上記の実施例では斜接型転がり軸受として複列玉軸受２０を使用しているが、斜接型転がり軸受は複列玉軸受に限られず、複列ころ軸受とすることもでき、単列の転がり軸受としても良い。
その他、本発明はその発明の思想の範囲で、各種の形態で実施できるものである。 In the above embodiment, the double row ball bearing 20 is used as the oblique contact type rolling bearing. However, the oblique contact type rolling bearing is not limited to the double row ball bearing, and may be a double row roller bearing. It may be a rolling bearing.
In addition, the present invention can be implemented in various forms within the scope of the idea of the invention.

一実施例における車輪用軸受装置の軸平行断面図である。It is an axis parallel sectional view of a bearing device for wheels in one example. 図１におけるスプラインによる噛み合い部分を拡大した部分図である。It is the fragmentary figure which expanded the meshing part by the spline in FIG. 従来技術による車輪用軸受装置の軸平行断面図である。It is an axial parallel sectional view of a wheel bearing device according to the prior art.

符号の説明Explanation of symbols

１０ 車輪用軸受装置
１２ ハブホイール
１３ 貫通孔
１４ ハブ軸
１５ 端部
１６ カシメ部
１８ スプライン
２０ 複列転がり軸受
２１ 玉
２２ 内輪
２３ スプライン
２４ 軌道面
２６ 側部
２８ 端面
２９ フェーススプライン
３０ 等速ジョイント
３２ 外輪
３４ 端面
３５ フェーススプライン
３６ 貫通孔
４０ ボルト
４２ ナット
４４ Ｏリング
５０ 接触線
５１ ナックル
５２ 外輪

DESCRIPTION OF SYMBOLS 10 Wheel bearing apparatus 12 Hub wheel 13 Through-hole 14 Hub shaft 15 End part 16 Caulking part 18 Spline 20 Double row rolling bearing 21 Ball 22 Inner ring 23 Spline 24 Track surface 26 Side part 28 End surface 29 Face spline 30 Constant velocity joint 32 Outer ring 34 End face 35 Face spline 36 Through hole 40 Bolt 42 Nut 44 O-ring 50 Contact line 51 Knuckle 52 Outer ring

Claims (2)

車輪が取付けられるハブホイールのハブ軸の外周に斜接型転がり軸受の内輪が嵌合され、ハブ軸と等速ジョイントの外輪とがトルク伝達可能に連結され、内輪の端面と等速ジョイントの外輪の端面とがフェーススプラインの噛み合いにより係合された、車両用軸受装置において、
前記内輪の内周面と前記ハブホイールのハブ軸の外周面とがスプライン嵌合されており、該内輪と該ハブ軸のスプライン嵌合部は、内輪に軌道面を持つ転動体の接触線上から軸方向でインナー側に外れた位置に形成されていることを特徴とする車輪用軸受装置。 An inner ring of a slanted rolling bearing is fitted to the outer periphery of the hub axle of the hub wheel to which the wheel is mounted, and the hub axle and the outer ring of the constant velocity joint are connected so as to be able to transmit torque, and the end face of the inner ring and the outer ring of the constant velocity joint In the vehicular bearing device in which the end face is engaged by the meshing of the face spline,
The inner peripheral surface of the inner ring and the outer peripheral surface of the hub shaft of the hub wheel are spline-fitted, and the spline-fitting portion of the inner ring and the hub shaft is from above the contact line of a rolling element having a raceway surface on the inner ring. A wheel bearing device, wherein the wheel bearing device is formed at a position deviated from the inner side in the axial direction. 請求項１に記載の車輪用軸受装置であって、
前記斜接型転がり軸受は複列転がり軸受であって、一方の内輪軌道面が前記内輪に形成され、他方の内輪軌道面が前記ハブ軸の外周面に形成されており、
前記内輪のインナー側の側部が径方向外方へ延設形成され、前記ハブ軸のインナー側端部が前記複列転がり軸受の内輪のインナー側端面にカシメ固定され、該カシメ固定位置よりも該内輪の径方向の外側において、該内輪の端面と前記等速ジョイントの外輪の端面とがスプライン係合されることを特徴とする車輪用軸受装置。

The wheel bearing device according to claim 1,
The oblique contact type rolling bearing is a double row rolling bearing, wherein one inner ring raceway surface is formed on the inner ring, and the other inner ring raceway surface is formed on the outer peripheral surface of the hub shaft,
An inner side side portion of the inner ring is formed to extend radially outward, and an inner side end portion of the hub shaft is caulked and fixed to an inner side end surface of the inner ring of the double row rolling bearing. A wheel bearing device, wherein the end surface of the inner ring and the end surface of the outer ring of the constant velocity joint are spline-engaged on the outer side in the radial direction of the inner ring.

JP2008087093A 2008-03-28 2008-03-28 Wheel bearing device Pending JP2009241615A (en)

Priority Applications (3)

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JP2008087093A JP2009241615A (en) 2008-03-28 2008-03-28 Wheel bearing device
EP20090004376 EP2105321B1 (en) 2008-03-28 2009-03-26 Wheel bearing assembly, and manufacturing method thereof
US12/385,085 US8052332B2 (en) 2008-03-28 2009-03-30 Wheel bearing assembly, and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008087093A JP2009241615A (en) 2008-03-28 2008-03-28 Wheel bearing device

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WO2013100285A1 (en) * 2011-12-26 2013-07-04 주식회사 일진글로벌 Coupled wheel bearing structure
WO2015163574A1 (en) * 2014-04-23 2015-10-29 주식회사 일진글로벌 Driving wheel bearing and method for manufacturing same
CN111677749A (en) * 2020-06-30 2020-09-18 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Spline positioning double-row angular contact ball bearing
CN111959193A (en) * 2020-07-01 2020-11-20 吉利汽车研究院（宁波）有限公司 Wheel bearing assembly and vehicle

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JPS62194903A (en) * 1986-02-14 1987-08-27 レ−ル・ウント・ブロンカンプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Bearing device
US4893960A (en) * 1986-10-24 1990-01-16 Lohr & Bromkamp Gmbh Wheel Bearing/constant velocity joint unit
JP2001018604A (en) * 1999-07-06 2001-01-23 Ntn Corp Wheel bearing device

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JPS62194903A (en) * 1986-02-14 1987-08-27 レ−ル・ウント・ブロンカンプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Bearing device
US4893960A (en) * 1986-10-24 1990-01-16 Lohr & Bromkamp Gmbh Wheel Bearing/constant velocity joint unit
JP2001018604A (en) * 1999-07-06 2001-01-23 Ntn Corp Wheel bearing device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013100285A1 (en) * 2011-12-26 2013-07-04 주식회사 일진글로벌 Coupled wheel bearing structure
WO2015163574A1 (en) * 2014-04-23 2015-10-29 주식회사 일진글로벌 Driving wheel bearing and method for manufacturing same
KR101573023B1 (en) * 2014-04-23 2015-11-30 주식회사 일진글로벌 A driving wheel bearing and manufacturing method thereof
JP2017517441A (en) * 2014-04-23 2017-06-29 イルジン グローバル カンパニー リミテッド Drive wheel bearing and manufacturing method thereof
US10207536B2 (en) 2014-04-23 2019-02-19 Iljin Global Co., Ltd. Drive wheel bearing and method of manufacturing the same
CN111677749A (en) * 2020-06-30 2020-09-18 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Spline positioning double-row angular contact ball bearing
CN111959193A (en) * 2020-07-01 2020-11-20 吉利汽车研究院（宁波）有限公司 Wheel bearing assembly and vehicle

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