JP2009078675A - Wheel supporting device - Google Patents

Wheel supporting device Download PDF

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JP2009078675A
JP2009078675A JP2007249131A JP2007249131A JP2009078675A JP 2009078675 A JP2009078675 A JP 2009078675A JP 2007249131 A JP2007249131 A JP 2007249131A JP 2007249131 A JP2007249131 A JP 2007249131A JP 2009078675 A JP2009078675 A JP 2009078675A
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hub
shaft
constant velocity
velocity joint
outer ring
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JP2009078675A5 (en
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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 JP2007249131A priority Critical patent/JP2009078675A/en
Priority to US12/232,906 priority patent/US8210752B2/en
Priority to EP08016997A priority patent/EP2042755B1/en
Publication of JP2009078675A publication Critical patent/JP2009078675A/en
Publication of JP2009078675A5 publication Critical patent/JP2009078675A5/ja
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel supporting device capable of aligning a hub wheel and a constant velocity joint on the same central line and meshing both side face splines mutually and easily. <P>SOLUTION: Both side face splines 18, 62 connecting a hub shaft 13 of the hub wheel 10 with an outer ring 60 of the constant velocity joint 50 to transmit torque are formed on an end face of the hub shaft 13 of the hub wheel 10 and an end face of the outer ring 60 of the constant velocity joint 50, respectively. A connection bolt 70 protruding from the end face of the outer ring 60 of the constant velocity joint 50 is inserted into an inner hole 14 in the hub shaft 13, and a tightening nut 75 is tightened on a male screw part 73 in a tip part of a shaft part 72 of the connection bolt 70 to connect the hub shaft 13 of the hub wheel 10 with the outer ring 60 of the constant velocity joint 50. A small diameter hole part 14c which has smaller diameter than diameter of the other parts of the inner hole 14 and in which the shaft part 72 of the connection bolt 70 is fitted and inserted with a slight clearance is formed in a part of the inner hole 14 of the hub shaft 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、車輪が取り付けられるハブホイールのハブ軸と、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支持装置に関する。   The present invention relates to a wheel support device in which a hub shaft of a hub wheel to which a wheel is attached and an outer ring of a constant velocity joint are connected so as to be able to transmit torque.

この種の車輪支持装置において、図６に示すように、ハブホイール２１０と等速ジョイント２５０とをトルク伝達可能に接続するために、ハブホイール２１０のハブ軸２１３の端面と、この端面に突き合わされる等速ジョイント２５０の外輪２６０の側壁部２６１の端面に、相互に噛み合うことでハブホイール２１０と等速ジョイント２５０とをトルク伝達する両サイドフェーススプライン２１８、２６２が形成されたものがある。
また、このような構造をもつ車輪支持装置において、等速ジョイント２５０の外輪２６０の側壁部２６１の端面から連結ボルト２７０を突出し、この連結ボルト２７０の軸部２７２の先端の雄ねじ部２７３をハブ軸２１３の内孔２１４の一端側（車幅方向中心側）から他端側（車幅方向外側）に向けて挿通し、この雄ねじ部２７３をハブ軸２１３の内孔２１４の他端側に突出させた状態で雄ねじ部２７３に締付ナット２７５を締め付けることで、ハブホイール２１０と等速ジョイント２５０とを一体状に連結した構造のものがある。
なお、ハブホイールのハブ軸の端面と等速ジョイントの端面にサイドフェーススプラインが形成された車輪支持装置においては、例えば、特許文献１に開示されている。
特開昭６３−１８４５０１号公報 In this type of wheel support device, as shown in FIG. 6, in order to connect the hub wheel 210 and the constant velocity joint 250 so that torque can be transmitted, the end surface of the hub axle 213 of the hub wheel 210 is abutted against this end surface. Some side face splines 218 and 262 for transmitting torque between the hub wheel 210 and the constant velocity joint 250 by meshing with each other are formed on the end surface of the side wall portion 261 of the outer ring 260 of the constant velocity joint 250.
In the wheel support device having such a structure, the connecting bolt 270 protrudes from the end surface of the side wall portion 261 of the outer ring 260 of the constant velocity joint 250, and the male screw portion 273 at the tip of the shaft portion 272 of the connecting bolt 270 is used as the hub shaft. The inner hole 214 of 213 is inserted from one end side (vehicle width direction center side) to the other end side (vehicle width direction outer side), and the male screw portion 273 is projected to the other end side of the inner hole 214 of the hub shaft 213. There is a structure in which the hub wheel 210 and the constant velocity joint 250 are integrally connected by tightening a tightening nut 275 to the male screw portion 273 in a state where the hub wheel 210 is connected.
A wheel support device in which side face splines are formed on the end face of the hub axle of the hub wheel and the end face of the constant velocity joint is disclosed in, for example, Patent Document 1.
Japanese Unexamined Patent Publication No. 63-184501

ところで、図６に示すような構造をもつ車輪支持装置においては、ハブ軸２１３の内孔２１４と連結ボルト２７０の軸部２７２との間の環状の隙間によって、ハブホイール２１０と等速ジョイント２５０との芯合わせがしづらく、両サイドフェーススプライン２１８、２６２の噛み合わせが厄介となる。
また、ハブホイール２１０と等速ジョイント２５０とを連結ボルト２７０と締付ナット２７５によって一体状に連結した状態において、ハブ軸２１３の内孔２１４と連結ボルト２７０の軸部２７２との間の環状の隙間によって、ハブホイール２１０と等速ジョイント２５０とが相対的に振動したり、あるいは異音を発生することが想定される。
そこで、ハブ軸２１３の内孔２１４と連結ボルト２７０の軸部２７２とを高精度に加工してハブ軸２１３の内孔２１４と連結ボルト２７０の軸部２７２とを僅かな隙間をもって嵌合させることが考えられるが、ハブ軸２１３の内孔２１４と連結ボルト２７０の軸部２７２とを高精度に加工すると、加工コストが高くなると共に、ハブ軸２１３の内孔２１４に対する連結ボルト２７０の軸部２７２の挿入性が悪化する。 By the way, in the wheel support device having the structure as shown in FIG. 6, the hub wheel 210 and the constant velocity joint 250 are formed by the annular gap between the inner hole 214 of the hub shaft 213 and the shaft portion 272 of the connecting bolt 270. This makes it difficult to align the cores of the two side face splines 218 and 262.
Further, in a state where the hub wheel 210 and the constant velocity joint 250 are integrally connected by the connection bolt 270 and the tightening nut 275, an annular shape between the inner hole 214 of the hub shaft 213 and the shaft portion 272 of the connection bolt 270 is provided. It is assumed that the hub wheel 210 and the constant velocity joint 250 vibrate relatively or generate abnormal noise due to the gap.
Therefore, the inner hole 214 of the hub shaft 213 and the shaft portion 272 of the connection bolt 270 are processed with high accuracy, and the inner hole 214 of the hub shaft 213 and the shaft portion 272 of the connection bolt 270 are fitted with a slight gap. However, if the inner hole 214 of the hub shaft 213 and the shaft portion 272 of the connecting bolt 270 are processed with high accuracy, the processing cost increases and the shaft portion 272 of the connecting bolt 270 with respect to the inner hole 214 of the hub shaft 213 is increased. The insertability of is worsened.

この発明の目的は、前記問題点に鑑み、ハブホイールのハブ軸の内孔に連結ボルトの軸部が嵌挿される動作によって、ハブホイールと等速ジョイントとを同一中心線上に位置合わせすることができ、両サイドフェーススプラインを容易に噛み合わせることができる車輪支持装置を提供することである。   In view of the above problems, the object of the present invention is to align the hub wheel and the constant velocity joint on the same center line by the operation of inserting the shaft portion of the connecting bolt into the inner hole of the hub shaft of the hub wheel. It is possible to provide a wheel support device capable of easily engaging both side face splines.

前記目的を達成するために、この発明の請求項１に係る車輪支持装置は、車輪が取り付けられるハブホイールのハブ軸と、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支持装置であって、
前記ハブ軸の端面と、この端面に突き合わされる前記等速ジョイントの外輪の端面には、相互に噛み合うことで前記ハブホイールのハブ軸と前記等速ジョイントの外輪とをトルク伝達可能に接続する両サイドフェーススプラインが形成され、
前記ハブ軸の内孔に前記等速ジョイントの外輪の端面から突出された連結ボルトが挿通され、この連結ボルトの軸部先端部の雄ねじ部に締付ナットが締め付けられることで、前記ハブホイールのハブ軸と等速ジョイントの外輪とが連結され、
前記ハブ軸の内孔の一部には、同内孔の他の部分よりも孔径が小さく、かつ前記連結ボルトの軸部が僅かな隙間をもって嵌挿される小径孔部が形成されていることを特徴とする。 In order to achieve the above object, a wheel support device according to claim 1 of the present invention is a wheel support device in which a hub shaft of a hub wheel to which a wheel is attached and an outer ring of a constant velocity joint are connected so as to be able to transmit torque. There,
The hub shaft of the hub wheel and the outer ring of the constant velocity joint are connected to each other so that torque can be transmitted between the end surface of the hub shaft and the end surface of the outer ring of the constant velocity joint abutted on the end surface. Both side face splines are formed,
A connecting bolt protruding from the end face of the outer ring of the constant velocity joint is inserted into the inner hole of the hub shaft, and a tightening nut is tightened to the male thread portion at the tip of the shaft portion of the connecting bolt. The hub axle and the constant velocity joint outer ring are connected,
A part of the inner hole of the hub shaft is formed with a small-diameter hole part in which the hole diameter is smaller than the other part of the inner hole and the shaft part of the connecting bolt is inserted with a slight gap. Features.

前記構成によると、ハブホイールと等速ジョイントとをトルク伝達可能に一体状に連結する場合、等速ジョイントの外輪の端面から突出された連結ボルトの軸部をハブ軸の内孔の一端側（車幅方向中心側）から他端側（車幅方向外側）に向けて挿通する。
そして、ハブ軸の端面と等速ジョイントの外輪の端面との両サイドフェーススプラインを噛み合わせながら、連結ボルトの軸部先端部の雄ねじ部をハブ軸の内孔の他端側に突出させた状態で雄ねじ部に締付ナットを締め付けることで、ハブホイールと等速ジョイントとをトルク伝達可能に一体状に連結する。
連結ボルトの軸部をハブ軸の内孔の一端側から他端側に向けて挿通する際、ハブ軸の内孔の小径孔部に連結ボルトの軸部を嵌挿させる動作によって、ハブホイールと等速ジョイントとを同一中心線上に正確に位置合わせすることができる。このため、ハブ軸の端面と、等速ジョイントの外輪の端面との両サイドフェーススプラインを容易に噛み合わせることができる。
特に、ハブ軸の内孔の一部に小径孔部を形成することによって、加工コストの増大や連結ボルトの挿入性の悪化を抑制することができると共に、振動、異音等の発生を抑制することができる。 According to the above configuration, when the hub wheel and the constant velocity joint are integrally connected so as to transmit torque, the shaft portion of the connecting bolt protruding from the end surface of the outer ring of the constant velocity joint is connected to one end side of the inner hole of the hub shaft ( It is inserted from the vehicle width direction center side toward the other end side (vehicle width direction outer side).
And the state where the male screw part at the tip part of the shaft part of the connecting bolt protrudes to the other end side of the inner hole of the hub shaft while engaging both side face splines of the end face of the hub shaft and the end face of the outer ring of the constant velocity joint. The hub wheel and the constant velocity joint are integrally connected so that torque can be transmitted by tightening a tightening nut on the male thread portion.
When inserting the shaft portion of the connecting bolt from one end side of the inner hole of the hub shaft toward the other end side, the hub wheel and the hub wheel are moved by inserting the shaft portion of the connecting bolt into the small diameter hole portion of the inner hole of the hub shaft. The constant velocity joint can be accurately aligned on the same center line. For this reason, both side face splines of the end face of the hub shaft and the end face of the outer ring of the constant velocity joint can be easily meshed.
In particular, by forming a small-diameter hole in a part of the inner hole of the hub shaft, it is possible to suppress an increase in processing cost and deterioration of the insertion performance of the connecting bolt, and also suppress the occurrence of vibration, abnormal noise, and the like. be able to.

請求項２に係る車輪支持装置は、請求項１に記載の車輪支持装置であって、
ハブ軸の内孔の内周面には、小径孔部のボルト挿入側に連続し、かつ連結ボルトの軸部先端を挿入案内するテーパ孔状の案内部が形成されていることを特徴とする。
前記構成によると、ハブ軸の内孔の小径孔部に連結ボルトの軸部が挿入される際、小径孔部のボルト挿入側に連続するテーパ孔状の案内部によって、連結ボルトの軸部先端を挿入案内することができ、連結ボルトの挿入性の向上を良好に図ることができる。 A wheel support device according to claim 2 is the wheel support device according to claim 1,
The inner peripheral surface of the inner hole of the hub shaft is formed with a tapered hole-shaped guide portion that is continuous with the bolt insertion side of the small-diameter hole portion and guides and inserts the tip end of the shaft portion of the connecting bolt. .
According to the above configuration, when the shaft portion of the connecting bolt is inserted into the small diameter hole portion of the inner hole of the hub shaft, the tip end of the shaft portion of the connecting bolt is formed by the tapered hole-shaped guide portion continuous to the bolt insertion side of the small diameter hole portion. The insertion of the connecting bolt can be improved satisfactorily.

次に、この発明を実施するための最良の形態を実施例にしたがって説明する。   Next, the best mode for carrying out the present invention will be described with reference to examples.

（実施例１）
この発明の実施例１を図１〜図３にしたがって説明する。
図１はこの発明の実施例１に係る車輪支持装置を示す側断面図である。図２はハブホイールと等速ジョイントとを連結する前の分離状態を示す断面図である。図３はハブホイールのハブ軸の中心部に内孔を形成するための第１、第２テーパ孔部を鍛造によって形成した状態を示す断面図である。
図１に示すように、この実施例１の車輪支持装置は、ハブホイール１０と、転がり軸受としての複列のアンギュラ玉軸受２０と、等速ジョイント５０とを備えて構成されている。 Example 1
A first embodiment of the present invention will be described with reference to FIGS.
1 is a side sectional view showing a wheel support device according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing a separated state before connecting the hub wheel and the constant velocity joint. FIG. 3 is a cross-sectional view showing a state in which the first and second tapered hole portions for forming the inner hole in the center portion of the hub shaft of the hub wheel are formed by forging.
As shown in FIG. 1, the wheel support device according to the first embodiment includes a hub wheel 10, a double row angular ball bearing 20 as a rolling bearing, and a constant velocity joint 50.

等速ジョイント５０は、周知のツェッパー型、バーフィールド型と呼ばれている等速ジョイントが使用されており、駆動軸５１の一端に一体状に連結された内輪５２と、外輪６０と、これら内・外輪５２、６０の間に配設された複数のボール５３と、これら複数のボール５３を保持する保持器５４を備えて構成されている。
等速ジョイント５０の外輪６０の側壁部６１端面には、サイドフェーススプライン６２が形成されている。
また、等速ジョイント５０の外輪６０の側壁部６１の中心部にはハブホイール１０と等速ジョイント５０とを一体状に連結するための連結ボルト７０が突出されている。 As the constant velocity joint 50, a well-known constant velocity joint called a Zepper type or a bar field type is used, and an inner ring 52 integrally connected to one end of a drive shaft 51, an outer ring 60, A plurality of balls 53 disposed between the outer rings 52 and 60 and a cage 54 that holds the plurality of balls 53 are provided.
A side face spline 62 is formed on the end surface of the side wall 61 of the outer ring 60 of the constant velocity joint 50.
Further, a connecting bolt 70 for connecting the hub wheel 10 and the constant velocity joint 50 integrally is projected at the center of the side wall 61 of the outer ring 60 of the constant velocity joint 50.

この実施例１において、連結ボルト７０は、等速ジョイント５０の外輪６０と別体をなす頭部７１と軸部７２とを有する一方、等速ジョイント５０の外輪６０の側壁部６１の中心部には貫通孔６３が貫設されている。
そして、等速ジョイント５０の外輪６０の貫通孔６３の内側開口部から連結ボルト７０の軸部７２が嵌挿され、頭部７１の下面が側壁部６１の内面に当接する位置まで軸部７２の根本部の大径部７２ａが圧入されることによって、等速ジョイント５０の外輪６０の側壁部６１から連結ボルト７０の軸部７２が突出されて固定される。連結ボルト７０の軸部７２の先端部には雄ねじ部７３が形成され、この雄ねじ部７３には締付ナット７５を回り止めするためのかしめ溝７４が凹設されている。 In the first embodiment, the connecting bolt 70 has a head portion 71 and a shaft portion 72 that are separate from the outer ring 60 of the constant velocity joint 50, and is provided at the center of the side wall portion 61 of the outer ring 60 of the constant velocity joint 50. Has a through hole 63.
Then, the shaft portion 72 of the connecting bolt 70 is fitted and inserted from the inner opening portion of the through hole 63 of the outer ring 60 of the constant velocity joint 50, and the shaft portion 72 reaches a position where the lower surface of the head portion 71 contacts the inner surface of the side wall portion 61. The shaft portion 72 of the connecting bolt 70 is protruded and fixed from the side wall portion 61 of the outer ring 60 of the constant velocity joint 50 by press-fitting the large diameter portion 72a of the base portion. A male screw portion 73 is formed at the tip of the shaft portion 72 of the connecting bolt 70, and a caulking groove 74 for preventing the tightening nut 75 from rotating is recessed in the male screw portion 73.

図１に示すように、ハブホイール１０は、円筒状をなすハブ軸１３と、ハブ軸１３の一端部寄り外周面に形成されたフランジ１１とを一体に有している。そして、フランジ１１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１２が所定ピッチでかつ圧入によって固定されている。
ハブ軸１３の外周には、外輪３０、内輪２１、転動体としての複数の玉４１、４２及び保持器４５、４６を備えた複列のアンギュラ玉軸受２０が組み付けられている。すなわち、この実施例１において、ハブ軸１３はフランジ１１側に形成された大径軸部１５と、大径軸部１５よりも適宜に小径でかつ大径軸部１５と段差部をもって連続して形成された小径軸部１６とを一体に有している。そして、大径軸部１５の外周面に、外輪３０の一方の軌道面３１に対応する軌道面２２が形成されている。
さらに、外輪３０の他方の軌道面３２に対応する軌道面２３が外周面に形成された内輪２１がハブ軸１３の小径軸部１６の外周面に嵌込まれた後、小径軸部１６の先端部がかしめられてかしめ部１７が形成されることによって、内輪２１が段差部とかしめ部１７との間に固定されている。
また、外輪３０の両軌道面３１、３２と、ハブ軸１３側の両軌道面２２、２３との間には各複数個の玉４１、４２と、これら各複数個の玉４１、４２をそれぞれ保持する保持器４５、４６が組み付けられる。
また、外輪３０の外周面には、車両の懸架装置（図示しない）に支持された車体側部材（ナックル、又はキャリア）にボルトによって取り付けるための固定フランジ３５が一体に形成されている。 As shown in FIG. 1, the hub wheel 10 integrally includes a cylindrical hub shaft 13 and a flange 11 formed on the outer peripheral surface near one end of the hub shaft 13. A plurality of hub bolts 12 for attaching a wheel (not shown) with a brake rotor (not shown) interposed therebetween are fixed to the flange 11 at a predetermined pitch and press-fitted.
A double-row angular ball bearing 20 including an outer ring 30, an inner ring 21, a plurality of balls 41 and 42 as rolling elements and cages 45 and 46 is assembled to the outer periphery of the hub shaft 13. That is, in the first embodiment, the hub shaft 13 has a large-diameter shaft portion 15 formed on the flange 11 side, and has a suitably smaller diameter than the large-diameter shaft portion 15 and continuously with the large-diameter shaft portion 15 and a stepped portion. The formed small diameter shaft portion 16 is integrally provided. A track surface 22 corresponding to one track surface 31 of the outer ring 30 is formed on the outer peripheral surface of the large-diameter shaft portion 15.
Further, after the inner ring 21 in which the raceway surface 23 corresponding to the other raceway surface 32 of the outer ring 30 is formed on the outer peripheral surface is fitted into the outer peripheral surface of the small-diameter shaft portion 16 of the hub shaft 13, the tip of the small-diameter shaft portion 16. The inner ring 21 is fixed between the stepped portion and the caulking portion 17 by caulking the portion to form the caulking portion 17.
Further, a plurality of balls 41, 42 and a plurality of these balls 41, 42 are provided between the raceway surfaces 31, 32 of the outer ring 30 and the raceway surfaces 22, 23 on the hub shaft 13 side, respectively. The holders 45 and 46 to be held are assembled.
In addition, a fixing flange 35 is integrally formed on the outer peripheral surface of the outer ring 30 to be attached to a vehicle body side member (knuckle or carrier) supported by a vehicle suspension device (not shown) with a bolt.

図１に示すように、ハブ軸１３の端面、この実施例１ではハブ軸１３のかしめ部１７の端面には、この端面に突き合わされる等速ジョイント５０の外輪６０の側壁部６１端面のサイドフェーススプライン６２に噛み合うサイドフェーススプライン１８が形成されている。
また、ハブ軸１３の内孔１４の一部には、同内孔１４の他の部分よりも孔径が小さく、かつ連結ボルト７０の軸部７２が僅かな隙間をもって嵌挿される小径孔部１４ｃが形成されている。
この実施例１において、図３に示すように、ハブ軸１３の中心部の軸方向両端から鍛造装置の各成形型によって第１テーパ孔部１４ａと第２テーパ孔部１４ｂとがそれぞれ５度前後の抜き勾配をもって同一中心線上に凹設され、これら第１、第２のテーパ孔部１４ａ、１４ｂの底面の間に所定肉厚をもつ壁部１４ｄが形成される。
そして、第１、第２のテーパ孔部１４ａ、１４ｂを鍛造によって形成した後、孔明け加工によって壁部１４ｄが切削されてることで、図２に示すように、小径孔部１４ｃが高精度に形成される。
すなわち、ハブ軸１３の内孔１４は、第１、第２のテーパ孔部１４ａ、１４ｂと小径孔部１４ｃによって構成される。 As shown in FIG. 1, the end surface of the hub shaft 13, in this embodiment 1, the end surface of the caulking portion 17 of the hub shaft 13, is the side of the end surface of the side wall portion 61 of the outer ring 60 of the constant velocity joint 50 that abuts against this end surface. A side face spline 18 that meshes with the face spline 62 is formed.
Further, a small diameter hole portion 14c in which a hole diameter is smaller than other portions of the inner hole 14 and the shaft portion 72 of the connecting bolt 70 is fitted with a slight gap is formed in a part of the inner hole 14 of the hub shaft 13. Is formed.
In the first embodiment, as shown in FIG. 3, the first taper hole portion 14 a and the second taper hole portion 14 b are each about 5 degrees from each axial end of the central portion of the hub shaft 13 by each mold of the forging device. A wall portion 14d having a predetermined thickness is formed between the bottom surfaces of the first and second tapered hole portions 14a and 14b.
Then, after the first and second tapered hole portions 14a and 14b are formed by forging, the wall portion 14d is cut by drilling so that the small-diameter hole portion 14c is highly accurate as shown in FIG. It is formed.
That is, the inner hole 14 of the hub shaft 13 is composed of first and second tapered hole portions 14a and 14b and a small diameter hole portion 14c.

この実施例１に係る車輪支持装置は上述したように構成される。
ハブホイール１０と等速ジョイント５０とをトルク伝達可能に一体状に連結する場合、図２に示すように、等速ジョイント５０の外輪６０の側壁部６１端面から突出された連結ボルト７０の軸部７２をハブホイール１０のハブ軸１３の内孔１４の一端側（車幅方向中心側）から他端側（車幅方向外側）に向けて挿通する。
そして、ハブ軸１３の端面のサイドフェーススプライン１８と等速ジョイント５０の外輪６０の側壁部６１端面のサイドフェーススプライン６２を噛み合わせながら、連結ボルト７０の軸部７２先端部の雄ねじ部７３をハブ軸１３の１４の他端側に突出させた状態で、雄ねじ部６５に締付ナット７５が締め付けられる。その後、図１に示すように、締付ナット７５端部の薄肉部７６の一部が雄ねじ部７３のかしめ溝７４内にかしめられて周り止めされることで、ハブホイール１０と等速ジョイント５０とがトルク伝達可能に一体状に連結される。 The wheel support device according to the first embodiment is configured as described above.
When the hub wheel 10 and the constant velocity joint 50 are integrally connected so that torque can be transmitted, as shown in FIG. 2, the shaft portion of the connecting bolt 70 protruding from the end surface of the side wall portion 61 of the outer ring 60 of the constant velocity joint 50. 72 is inserted from one end side (vehicle width direction center side) of the inner hole 14 of the hub axle 13 of the hub wheel 10 toward the other end side (vehicle width direction outer side).
Then, while engaging the side face spline 18 on the end face of the hub shaft 13 and the side face spline 62 on the end face of the side wall 61 of the outer ring 60 of the constant velocity joint 50, the male threaded portion 73 at the tip end of the shaft 72 of the connecting bolt 70 is connected to the hub. A tightening nut 75 is fastened to the male screw portion 65 in a state of protruding to the other end side of the shaft 13. After that, as shown in FIG. 1, a part of the thin portion 76 at the end of the tightening nut 75 is caulked in the caulking groove 74 of the male screw portion 73 and is prevented from rotating, thereby the hub wheel 10 and the constant velocity joint 50. Are coupled together so that torque can be transmitted.

連結ボルト７０の軸部７２をハブ軸１３の内孔１４の一端側から他端側に向けて挿通する際、ハブ軸１３の内孔１４の小径孔部１４ｃに連結ボルト７０の軸部７２を嵌挿させる動作によって、ハブホイール１０と等速ジョイント５０とを同一中心線上に正確に位置合わせすることができる。このため、ハブ軸１３の端面と、等速ジョイント５０の外輪６０の側壁部６１端面との両サイドフェーススプライン１８、６２を容易に噛み合わせることができる。
特に、ハブ軸１３の内孔１４の一部に小径孔部１４ｃを形成することによって、ハブ軸１３の内孔１４を全長にわたって高精度に孔明け加工する場合と比べ加工コストを低く抑えることができる。さらに、連結ボルト７０の挿入性の悪化も抑制することができる。 When the shaft portion 72 of the connecting bolt 70 is inserted from one end side to the other end side of the inner hole 14 of the hub shaft 13, the shaft portion 72 of the connecting bolt 70 is inserted into the small diameter hole portion 14 c of the inner hole 14 of the hub shaft 13. By the insertion operation, the hub wheel 10 and the constant velocity joint 50 can be accurately aligned on the same center line. Therefore, both side face splines 18 and 62 between the end surface of the hub shaft 13 and the end surface of the side wall portion 61 of the outer ring 60 of the constant velocity joint 50 can be easily meshed with each other.
In particular, by forming the small-diameter hole portion 14c in a part of the inner hole 14 of the hub shaft 13, the processing cost can be kept low compared with the case where the inner hole 14 of the hub shaft 13 is drilled with high accuracy over the entire length. it can. Furthermore, the deterioration of the insertion property of the connecting bolt 70 can also be suppressed.

また、この実施例１においては、ハブ軸１３の小径孔部１４ｃに連結ボルト７０の軸部７２が挿入される際、小径孔部１４ｃのボルト挿入側に連続する第１テーパ孔部１４ａを案内部として、連結ボルト７０の軸部７２先端（雄ねじ部７３先端）を挿入案内することができ、連結ボルト７０の挿入性の向上を良好に図ることができる。   In the first embodiment, when the shaft portion 72 of the connection bolt 70 is inserted into the small diameter hole portion 14c of the hub shaft 13, the first tapered hole portion 14a continuous to the bolt insertion side of the small diameter hole portion 14c is guided. As a portion, the distal end of the shaft portion 72 (the distal end of the male screw portion 73) of the connection bolt 70 can be inserted and guided, and the insertion performance of the connection bolt 70 can be improved satisfactorily.

また、前記したように構成される車輪支持装置において、車両の走行時等の駆動軸５１のトルクは、等速ジョイント５０の内輪５２、複数のボール５３及び外輪６０に順次伝達され、駆動軸５１と同方向に外輪６０が回転される。
等速ジョイント５０に伝達されたトルクは、ハブホイール１０のハブ軸１３の端面（かしめ部１７の端面）と、等速ジョイント５０の外輪６０の側壁部６１端面との両サイドフェーススプライン１８、６２の噛み合いによってハブホイール１０に伝達され、車輪が回転駆動される。
前記したようにして、サイドフェーススプライン１８、６２の噛み合いによって等速ジョイント５０側のトルクをハブホイール１０側に良好に伝達することができるため、ハブホイール１０のハブ軸１３の端面と等速ジョイント５０の外輪６０の端面６２との間の相対的な滑りを良好に抑制することができる。ひいては、ハブホイール１０のハブ軸１３の端面と等速ジョイント５０の外輪６０の端面６２との間の相対的な滑り原因となる異音の発生を防止することができる。 Further, in the wheel support device configured as described above, the torque of the drive shaft 51 during traveling of the vehicle is sequentially transmitted to the inner ring 52, the plurality of balls 53, and the outer ring 60 of the constant velocity joint 50, and the drive shaft 51 The outer ring 60 is rotated in the same direction.
The torque transmitted to the constant velocity joint 50 is generated on both side face splines 18 and 62 between the end surface of the hub shaft 13 of the hub wheel 10 (the end surface of the caulking portion 17) and the end surface of the side wall portion 61 of the outer ring 60 of the constant velocity joint 50. Is transmitted to the hub wheel 10 and the wheel is driven to rotate.
As described above, the torque on the constant velocity joint 50 side can be satisfactorily transmitted to the hub wheel 10 side by the meshing of the side face splines 18 and 62, so that the end surface of the hub axle 13 of the hub wheel 10 and the constant velocity joint can be transmitted. The relative slip between the end face 62 of the 50 outer rings 60 can be suppressed well. As a result, it is possible to prevent the generation of abnormal noise that causes a relative slip between the end surface of the hub axle 13 of the hub wheel 10 and the end surface 62 of the outer ring 60 of the constant velocity joint 50.

（実施例２）
次に、この発明の実施例２を図４と図５にしたがって説明する。
図４はこの発明の実施例２に係る車輪支持装置を示す側断面図である。図５はハブホイールと等速ジョイントとを連結する前の分離状態を示す断面図である。
図４と図５に示すように、この実施例２においては、ハブホイール１０のハブ軸１３の内孔１１４の端部（車外側端部）寄りに小径孔部１１４ｃが形成されている。
また、ハブ軸１３の内孔１１４の内周面には、小径孔部１１４ｃのボルト挿入側に連続し、かつ連結ボルト７０の軸部７２先端（雄ねじ部７３先端）を挿入案内するテーパ孔状の案内部１１４ａが形成されている。
この実施例２のその他の構成は、実施例１と同様にして構成されるため、同一構成部分に対し同一符号を付記してその説明は省略する。
したがって、この実施例２においても実施例１と略同様の作用効果を奏する。 (Example 2)
Next, a second embodiment of the present invention will be described with reference to FIGS.
4 is a side sectional view showing a wheel support device according to Embodiment 2 of the present invention. FIG. 5 is a cross-sectional view showing a separated state before connecting the hub wheel and the constant velocity joint.
As shown in FIGS. 4 and 5, in the second embodiment, a small diameter hole portion 114 c is formed near the end portion (the vehicle outer end portion) of the inner hole 114 of the hub shaft 13 of the hub wheel 10.
The inner peripheral surface of the inner hole 114 of the hub shaft 13 has a tapered hole shape that is continuous with the bolt insertion side of the small diameter hole portion 114c and that guides the insertion of the distal end of the shaft portion 72 (the distal end of the male screw portion 73) of the connecting bolt 70. The guide part 114a is formed.
Since other configurations of the second embodiment are configured in the same manner as the first embodiment, the same components are denoted by the same reference numerals, and the description thereof is omitted.
Therefore, the second embodiment has substantially the same operational effects as the first embodiment.

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い。
例えば、前記実施例１及び２においては、等速ジョイント５０の外輪６０の側壁部６１の貫通孔６３に、外輪６０とは別体の連結ボルト７０が圧入によって固定される場合を例示したが、外輪６０の側壁部６１から連結ボルトを一体に突出した場合においてもこの発明を実施可能である。
また、ハブホイール側の転がり軸受としては複列のアンギュラ玉軸受２０の他、複列の円すいころ軸受けを用いてもこの発明を実施可能である。 The present invention is not limited to the first and second embodiments.
For example, in the first and second embodiments, the case where the connecting bolt 70 separate from the outer ring 60 is fixed to the through hole 63 of the side wall 61 of the outer ring 60 of the constant velocity joint 50 by press-fitting is illustrated. The present invention can be implemented even when the connecting bolt projects integrally from the side wall portion 61 of the outer ring 60.
Further, as the rolling bearing on the hub wheel side, the present invention can be implemented by using a double row tapered roller bearing in addition to the double row angular ball bearing 20.

この発明の実施例１に係る車輪支持装置を示す側断面図である。It is a sectional side view which shows the wheel support apparatus which concerns on Example 1 of this invention. 同じくハブホイールと等速ジョイントとを連結する前の分離状態を示す断面図である。It is sectional drawing which similarly shows the isolation | separation state before connecting a hub wheel and a constant velocity joint. 同じくハブホイールのハブ軸の中心部に内孔を形成するための第１、第２テーパ孔部を鍛造によって形成した状態を示す断面図である。It is sectional drawing which shows the state which formed the 1st, 2nd taper hole part for forming an inner hole in the center part of the hub axle of a hub wheel similarly by forging. この発明の実施例２に係る車輪支持装置を示す側断面図である。It is a sectional side view which shows the wheel support apparatus which concerns on Example 2 of this invention. 同じくハブホイールと等速ジョイントとを連結する前の分離状態を示す断面図である。It is sectional drawing which similarly shows the isolation | separation state before connecting a hub wheel and a constant velocity joint. 先行技術の車輪支持装置を示す側断面図である。It is side sectional drawing which shows the wheel support apparatus of a prior art.

符号の説明Explanation of symbols

１０ ハブホイール
１１ フランジ
１３ ハブ軸
１４ 内孔
１４ａ 第１テーパ孔部
１４ｂ 第２テーパ孔部
１４ｃ 小径孔部
１７ かしめ部
１８ サイドフェーススプライン
２０ アンギュラ玉軸受（転がり軸受）
５０ 等速ジョイント
６０ 外輪
６１ 側壁部
６２ サイドフェーススプライン
７０ 連結ボルト
７２ 軸部
７３ 雄ねじ部
７５ 締付ナット DESCRIPTION OF SYMBOLS 10 Hub wheel 11 Flange 13 Hub shaft 14 Inner hole 14a 1st taper hole part 14b 2nd taper hole part 14c Small diameter hole part 17 Caulking part 18 Side face spline 20 Angular contact ball bearing (rolling bearing)
50 Constant velocity joint 60 Outer ring 61 Side wall part 62 Side face spline 70 Connection bolt 72 Shaft part 73 Male thread part 75 Tightening nut

Claims (2)

車輪が取り付けられるハブホイールのハブ軸と、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支持装置であって、
前記ハブ軸の端面と、この端面に突き合わされる前記等速ジョイントの外輪の端面には、相互に噛み合うことで前記ハブホイールのハブ軸と前記等速ジョイントの外輪とをトルク伝達可能に接続する両サイドフェーススプラインが形成され、
前記ハブ軸の内孔に前記等速ジョイントの外輪の端面から突出された連結ボルトが挿通され、この連結ボルトの軸部先端部の雄ねじ部に締付ナットが締め付けられることで、前記ハブホイールのハブ軸と等速ジョイントの外輪とが連結され、
前記ハブ軸の内孔の一部には、同内孔の他の部分よりも孔径が小さく、かつ前記連結ボルトの軸部が僅かな隙間をもって嵌挿される小径孔部が形成されていることを特徴とする車輪支持装置。 A wheel support device in which a hub shaft of a hub wheel to which a wheel is attached and an outer ring of a constant velocity joint are connected so as to be able to transmit torque,
The hub shaft of the hub wheel and the outer ring of the constant velocity joint are connected to each other so that torque can be transmitted between the end surface of the hub shaft and the end surface of the outer ring of the constant velocity joint abutted on the end surface. Both side face splines are formed,
A connecting bolt protruding from the end face of the outer ring of the constant velocity joint is inserted into the inner hole of the hub shaft, and a tightening nut is tightened to the male thread portion at the tip of the shaft portion of the connecting bolt. The hub axle and the constant velocity joint outer ring are connected,
A part of the inner hole of the hub shaft is formed with a small-diameter hole part in which the hole diameter is smaller than the other part of the inner hole and the shaft part of the connecting bolt is inserted with a slight gap. A wheel support device. 請求項１に記載の車輪支持装置であって、
ハブ軸の内孔の内周面には、小径孔部のボルト挿入側に連続し、かつ連結ボルトの軸部先端を挿入案内するテーパ孔状の案内部が形成されていることを特徴とする車輪支持装置。 The wheel support device according to claim 1,
The inner peripheral surface of the inner hole of the hub shaft is formed with a tapered hole-shaped guide portion that is continuous with the bolt insertion side of the small-diameter hole portion and guides and inserts the tip end of the shaft portion of the connecting bolt. Wheel support device.
JP2007249131A 2007-09-26 2007-09-26 Wheel supporting device Pending JP2009078675A (en)

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JP2007249131A JP2009078675A (en) 2007-09-26 2007-09-26 Wheel supporting device
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EP08016997A EP2042755B1 (en) 2007-09-26 2008-09-26 Wheel supporting device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011031685A (en) * 2009-07-30 2011-02-17 Jtekt Corp Connecting structure of bearing device for wheel and drive shaft
EP2565051A2 (en) 2011-08-29 2013-03-06 Jtekt Corporation Wheel supporting device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145813A (en) * 1979-04-24 1980-11-13 Glaenzer Spicer Sa Roll bearing and fitting device cotaining the same of wheel for vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145813A (en) * 1979-04-24 1980-11-13 Glaenzer Spicer Sa Roll bearing and fitting device cotaining the same of wheel for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011031685A (en) * 2009-07-30 2011-02-17 Jtekt Corp Connecting structure of bearing device for wheel and drive shaft
EP2565051A2 (en) 2011-08-29 2013-03-06 Jtekt Corporation Wheel supporting device
US9005043B2 (en) 2011-08-29 2015-04-14 Jtekt Corporation Wheel supporting device

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