JP2002147483A - Constant velocity universal joint and bearing device for drive wheel equipped therewith - Google Patents
Constant velocity universal joint and bearing device for drive wheel equipped therewithInfo
- Publication number
- JP2002147483A JP2002147483A JP2000340801A JP2000340801A JP2002147483A JP 2002147483 A JP2002147483 A JP 2002147483A JP 2000340801 A JP2000340801 A JP 2000340801A JP 2000340801 A JP2000340801 A JP 2000340801A JP 2002147483 A JP2002147483 A JP 2002147483A
- Authority
- JP
- Japan
- Prior art keywords
- joint
- constant velocity
- velocity universal
- center
- track groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は等速自在継手および
これを具備した駆動車輪用軸受装置に関し、詳しくは、
自動車のエンジンから駆動車輪に動力を伝達する動力伝
達系に使用される等速自在継手、およびその等速自在継
手を組み込んで駆動車輪を車体に回転自在に支持する駆
動車輪用軸受装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant velocity universal joint and a drive wheel bearing device provided with the same.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant velocity universal joint used in a power transmission system for transmitting power from an automobile engine to drive wheels, and a drive wheel bearing device incorporating the constant velocity universal joint to rotatably support a drive wheel on a vehicle body.
【０００２】[0002]
【従来の技術】自動車の動力伝達系に使用される等速自
在継手を組み込んだ駆動車輪用軸受装置は、例えば、図
４に示すようにハブ輪１、等速自在継手２および複列の
車輪軸受３をユニット化したもので、ハブ輪１、複列の
転動体４，５、外輪６および等速自在継手２を主要な構
成要素としている。2. Description of the Related Art A drive wheel bearing device incorporating a constant velocity universal joint used in a power transmission system of an automobile includes, for example, a hub wheel 1, a constant velocity universal joint 2, and double-row wheels as shown in FIG. The bearing 3 is made into a unit, and includes a hub wheel 1, double-row rolling elements 4, 5, an outer ring 6, and a constant velocity universal joint 2 as main components.
【０００３】等速自在継手２は、内球面１０に複数のト
ラック溝１２が円周方向等間隔に軸方向に沿って開口端
に向けて形成された継手外輪１４と、外球面１１に継手
外輪１４のトラック溝１２と対向する複数のトラック溝
１３が円周方向等間隔に軸方向に沿って形成された継手
内輪１５と、継手外輪１４と継手内輪１５の両トラック
溝１２，１３間に介在してトルクを伝達するボール１６
と、継手外輪１４の内球面１０と継手内輪１５の外球面
１１との間に介在して各ボール１６を支持する保持器１
７とを備えている。The constant velocity universal joint 2 includes a joint outer ring 14 in which a plurality of track grooves 12 are formed in the inner spherical surface 10 at equal intervals in the circumferential direction toward the open end along the axial direction. A plurality of track grooves 13 facing the 14 track grooves 12 are formed along the axial direction at equal intervals in the circumferential direction, and are interposed between the track grooves 12, 13 of the joint outer ring 14 and the joint inner ring 15. Ball 16 that transmits torque
And a cage 1 for supporting each ball 16 between the inner spherical surface 10 of the joint outer race 14 and the outer spherical surface 11 of the joint inner race 15
7 is provided.
【０００４】なお、複数のボール１６は、保持器１７に
形成されたポケット１８に収容されて円周方向等間隔に
配置されている。また、大きな作動角を取り得る構造と
するため、継手外輪１４のトラック溝１２の曲率中心Ｏ
1と継手内輪１５のトラック溝１３の曲率中心Ｏ2とは、
ボール中心を含む継手中心Ｐに対して等距離だけ軸方向
両側にオフセットされている。つまり、継手外輪１４の
トラック溝１２の曲率中心Ｏ1は継手中心Ｐよりも入口
側に配置され、継手内輪１５のトラック溝１３の曲率中
心Ｏ2は継手中心Ｐよりも奥側に配置されている。The plurality of balls 16 are housed in pockets 18 formed in a retainer 17 and are arranged at equal intervals in the circumferential direction. Further, in order to obtain a structure capable of obtaining a large operating angle, the center of curvature O of the track groove 12 of the joint outer ring 14 is set.
1 and the center of curvature O 2 of the track groove 13 of the joint inner ring 15
It is offset on both axial sides by the same distance from the joint center P including the ball center. That is, the center of curvature O 1 of the track groove 12 of the outer ring 14 of the joint is located closer to the inlet side than the center P of the joint, and the center of curvature O 2 of the track groove 13 of the inner ring 15 of the joint is located farther than the center P of the joint. I have.
【０００５】等速自在継手２の継手内輪１５にはセレー
ション孔１９が形成され、そのセレーション孔１９にシ
ャフト２０を嵌合させてトルク伝達可能としている。ま
た、継手外輪１４は、継手内輪１５、ボール１６および
保持器１７を収容したマウス部２１と、そのマウス部２
１から軸方向に一体的に延び、外径面にセレーション部
２４が形成されたステム部２２を有する。[0005] A serration hole 19 is formed in the joint inner ring 15 of the constant velocity universal joint 2, and a shaft 20 is fitted into the serration hole 19 so that torque can be transmitted. The outer joint ring 14 includes a mouth portion 21 containing the inner joint ring 15, the ball 16, and the retainer 17, and a mouse portion 2.
1 has a stem portion 22 integrally extending in the axial direction and having a serration portion 24 formed on an outer diameter surface.
【０００６】このステム部２２をハブ輪１の貫通孔２３
に挿入し、前記ステム部２２の外径面および貫通孔２３
の内径面に形成されたセレーション部２４，２５により
両者を嵌合させることによりトルク伝達可能としてい
る。この継手外輪１４のステム端部２６を塑性変形によ
りハブ輪１の端部外側に加締め、継手外輪１４をハブ輪
１に固定して一体化している。The stem portion 22 is inserted into the through hole 23 of the hub wheel 1.
Into the outer diameter surface of the stem portion 22 and the through hole 23.
The torque can be transmitted by fitting the serrations 24 and 25 formed on the inner diameter surface of the two. The stem end 26 of the joint outer ring 14 is caulked to the outside of the end of the hub wheel 1 by plastic deformation, and the joint outer ring 14 is fixed to and integrated with the hub wheel 1.
【０００７】ハブ輪１は、その外径面にアウトボード側
の軌道面７が形成されると共に、車輪（図示せず）を取
り付けるための車輪取付フランジ９を一体に備えてい
る。ハブ輪１のアウトボード側の軌道面７と、継手外輪
１４のステム基部２７に形成されたインボード側の軌道
面８とで複列の軌道面を構成する。前記継手外輪１４の
ステム端部２６の加締めにより、ハブ輪１のインボード
側端部に継手外輪１４のステム基部２７を突き合わせ、
これにより予圧管理を行っている。The hub wheel 1 has a track surface 7 on the outboard side formed on an outer diameter surface thereof, and is integrally provided with a wheel mounting flange 9 for mounting a wheel (not shown). The raceway surface 7 on the outboard side of the hub wheel 1 and the raceway surface 8 on the inboard side formed on the stem base 27 of the joint outer race 14 constitute a double-row raceway surface. By caulking the stem end 26 of the joint outer race 14, the stem base 27 of the joint outer race 14 abuts against the inboard end of the hub wheel 1,
In this way, preload management is performed.
【０００８】外輪６は、内径面にハブ輪１および継手外
輪１４の軌道面７，８と対向する軌道面２８，２９が形
成され、車体（図示せず）に取り付けるための車体取付
フランジ３０を一体に備えている。The outer race 6 has raceway surfaces 28, 29 facing the raceway surfaces 7, 8 of the hub wheel 1 and the joint outer race 14 on its inner diameter surface, and has a vehicle body mounting flange 30 for mounting to a vehicle body (not shown). I have one.
【０００９】車輪軸受３は、複列のアンギュラ玉軸受構
造で、ハブ輪１および継手外輪１４の外径面に形成され
た軌道面７，８と外輪６の内径面に形成された軌道面２
８，２９との間に転動体４，５を介在させ、各列の転動
体４，５を保持器３１，３２により円周方向等間隔に支
持した構造を有する。The wheel bearing 3 has a double-row angular contact ball bearing structure. The raceway surfaces 7 and 8 formed on the outer diameter surface of the hub wheel 1 and the joint outer ring 14 and the raceway surface 2 formed on the inner diameter surface of the outer ring 6.
The rolling elements 4 and 5 are interposed between the rolling elements 8 and 29, and the rolling elements 4 and 5 in each row are supported by the retainers 31 and 32 at equal intervals in the circumferential direction.
【００１０】車輪軸受３の両端開口部には、外輪６とハ
ブ輪１および継手外輪１４との環状空間を密封する一対
のシール３３，３４が外輪６の端部内径に嵌合され、内
部に充填されたグリースの漏洩ならびに外部からの水や
異物の侵入を防止するようになっている。A pair of seals 33 and 34 for sealing the annular space between the outer ring 6, the hub wheel 1 and the joint outer ring 14 are fitted into the opening at both ends of the wheel bearing 3 at the inner diameter at the end of the outer ring 6, and are inserted therein. Leakage of the filled grease and intrusion of water and foreign matter from the outside are prevented.
【００１１】また、等速自在継手２の内部に封入された
グリースの漏洩ならびに外部からの水や異物の侵入を防
止するため、シャフト２０と等速自在継手２との間に密
封用ブーツ３５を装着している。この蛇腹状のブーツ３
５は、その大径側端部を継手外輪１４のマウス部２１の
外径に嵌着し、小径端部をシャフト２０の外径に嵌着す
ると共に、両端部に金属製のブーツバンド３６，３７を
締め付けて気密的に固定される。A sealing boot 35 is provided between the shaft 20 and the constant velocity universal joint 2 in order to prevent leakage of grease sealed inside the constant velocity universal joint 2 and intrusion of water or foreign matter from the outside. I am wearing it. This bellows-shaped boots 3
5 has a large-diameter end portion fitted to the outer diameter of the mouth portion 21 of the joint outer race 14, a small-diameter end portion fitted to the outer diameter of the shaft 20, and metal boot bands 36 at both ends. 37 is tightly fixed by tightening.
【００１２】[0012]
【発明が解決しようとする課題】ところで、前述した駆
動車輪用軸受装置においては、等速自在継手２のブーツ
３５は、他の部品と比べて交換頻度が比較的高く、特
に、アウトボード側に位置するため、小石や障害物によ
る亀裂や切損の頻度が高く寿命が短い傾向にあり、ブー
ツ３５を交換する必要性がある。By the way, in the above-described drive wheel bearing device, the boot 35 of the constant velocity universal joint 2 is exchanged relatively frequently as compared with other parts, and particularly, the boot 35 is provided on the outboard side. Since it is located, the frequency of cracks and cuts due to pebbles and obstacles tends to be high and the life tends to be short, and it is necessary to replace the boot 35.
【００１３】従来、アウトボード側の等速自在継手２に
装着されたブーツ３５を交換するに際しては、インボー
ド側の等速自在継手（図示せず）とシャフト２０とアウ
トボード側の等速自在継手２とからなるアッセンブリ体
を車体から一旦取り外した上で、インボード側の等速自
在継手を分解し、インボード側から前記ブーツ３５を交
換していた。従って、ブーツ交換時には、作業工数や調
整作業工数など、ブーツ交換工数が多大であり、ブーツ
交換作業に非常に手間がかかり、作業が煩雑であった。Conventionally, when the boot 35 mounted on the constant velocity universal joint 2 on the outboard side is replaced, the constant velocity universal joint (not shown) on the inboard side, the shaft 20 and the constant velocity universal joint on the outboard side are replaced. After once removing the assembly including the joint 2 from the vehicle body, the constant velocity universal joint on the inboard side is disassembled, and the boot 35 is replaced from the inboard side. Therefore, when replacing the boots, the boot replacement man-hours such as the work man-hours and the adjustment work man-hours are enormous, and the boot replacement work is extremely troublesome and complicated.
【００１４】そこで、本発明は前記問題点に鑑みて提案
されたもので、その目的とするところは、等速自在継手
のブーツ交換において、その作業性を向上させ得る等速
自在継手およびこれを具備した駆動車輪用軸受装置を提
供することにある。Accordingly, the present invention has been proposed in view of the above problems, and an object of the present invention is to provide a constant velocity universal joint capable of improving workability in replacing boots of a constant velocity universal joint. An object of the present invention is to provide a driving wheel bearing device provided with the same.
【００１５】[0015]
【課題を解決するための手段】前記目的を達成するため
の技術的手段として、本発明に係る等速自在継手は、内
球面に曲線状のトラック溝が形成された継手外輪と、外
球面に前記継手外輪のトラック溝と対向する曲線状のト
ラック溝が形成された継手内輪と、これら両トラック溝
間に組み込まれてトルクを伝達するボールと、前記継手
外輪の内球面および継手内輪の外球面に案内されて前記
ボールを支持する保持器とからなり、前記継手外輪のト
ラック溝の曲率中心と前記継手内輪のトラック溝の曲率
中心とを継手中心より軸方向両側に等距離オフセットさ
せた等速自在継手において、前記継手外輪のトラック溝
の曲率中心を前記継手中心よりも奥側に配置すると共
に、前記保持器の継手中心よりも入口側内径面に別体の
案内部材を着脱自在に装着したことを特徴とする（請求
項１）。As a technical means for achieving the above object, a constant velocity universal joint according to the present invention comprises: a joint outer ring having a curved track groove formed on an inner spherical surface; A joint inner ring in which a curved track groove facing the track groove of the joint outer ring is formed, a ball that is incorporated between the two track grooves to transmit torque, an inner spherical surface of the joint outer ring and an outer spherical surface of the joint inner ring And a cage for supporting the ball guided by the joint, wherein the center of curvature of the track groove of the outer ring of the joint and the center of curvature of the track groove of the inner ring of the joint are offset from the center of the joint by equal distances on both sides in the axial direction. In the universal joint, the center of curvature of the track groove of the outer ring of the joint is disposed deeper than the center of the joint, and a separate guide member is detachably attached to the inner diameter surface on the inlet side of the center of the joint of the retainer. Characterized in that mounted (claim 1).
【００１６】継手外輪のトラック溝の曲率中心を継手中
心よりも入口側、継手内輪のトラック溝の曲率中心を継
手中心よりも奥側にそれぞれ配置していた従来の等速自
在継手に対して、本発明に係る等速自在継手では、継手
内外輪のトラック溝の曲率中心を逆オフセットする。つ
まり、継手外輪のトラック溝の曲率中心を継手中心より
も奥側に配置し、継手内輪のトラック溝の曲率中心を継
手中心よりも入口側に配置する。これにより、継手外輪
に対して継手内輪を軸方向に引き出すことで離脱可能と
することができ、等速自在継手の分解が容易となる。な
お、継手内輪の組み付け時には、保持器の継手中心より
も入口側内径面に別体の案内部材が装着されているた
め、継手内輪が抜脱することはない。In contrast to the conventional constant velocity universal joint, the center of curvature of the track groove of the outer ring of the joint is located on the inlet side of the center of the joint, and the center of curvature of the track groove of the inner ring of the joint is located on the far side of the center of the joint. In the constant velocity universal joint according to the present invention, the center of curvature of the track groove of the joint inner and outer rings is reversely offset. That is, the center of curvature of the track groove of the outer ring of the joint is located on the back side of the center of the joint, and the center of curvature of the track groove of the inner ring of the joint is located on the inlet side of the center of the joint. Thus, the inner ring of the joint can be detached by pulling out the inner ring of the joint with respect to the outer ring of the joint, and the constant velocity universal joint can be easily disassembled. At the time of assembling the joint inner ring, since the separate guide member is mounted on the inner diameter surface on the inlet side of the joint of the retainer, the joint inner ring does not come off.
【００１７】前記案内部材の装着構造としては、請求項
２に記載したように前記保持器の奥側内径面を凹球面、
かつ、入口側内径面を円筒面とし、この円筒面に、凹球
面を有する前記案内部材を嵌合して止め輪で位置決め固
定する。このようにすれば、止め輪の着脱により案内部
材の取り付けおよび取り外しが容易に行える。なお、案
内部材の取り付け時、保持器の奥側内径面の凹球面と案
内部材の凹球面とで継手内輪をガイドする。[0017] As the mounting structure of the guide member, the inner diameter surface on the back side of the retainer is a concave spherical surface as described in claim 2.
The inlet-side inner diameter surface is a cylindrical surface, and the guide member having a concave spherical surface is fitted to the cylindrical surface, and is positioned and fixed with a retaining ring. With this configuration, the attachment and detachment of the guide member can be easily performed by attaching and detaching the retaining ring. When the guide member is attached, the joint inner ring is guided by the concave spherical surface of the inner diameter surface on the inner side of the retainer and the concave spherical surface of the guide member.
【００１８】この等速自在継手では、請求項３に記載し
たように前記継手内輪と一体に軸部を形成した構造とす
ることが可能である。In this constant velocity universal joint, it is possible to adopt a structure in which a shaft portion is formed integrally with the joint inner ring as described in claim 3.
【００１９】また、請求項１乃至３のいずれかに記載し
た等速自在継手を複列の車輪軸受にトルク伝達可能に結
合させれば、駆動車輪用軸受装置に適用することが可能
となる（請求項４）。その場合、前記等速自在継手の継
手外輪は軸方向に延びるステム部を一体に有し、車輪取
付フランジを一体に有するハブ輪に前記ステム部をセレ
ーション部を介して内嵌した構造を有する駆動車輪用軸
受装置が実現容易となる（請求項５）。Further, if the constant velocity universal joint according to any one of claims 1 to 3 is coupled to a double-row wheel bearing so as to be able to transmit torque, it can be applied to a drive wheel bearing device ( Claim 4). In this case, the outer race of the constant velocity universal joint has a stem portion integrally extending in the axial direction, and has a structure in which the stem portion is internally fitted via a serration portion to a hub wheel integrally having a wheel mounting flange. The bearing device for a wheel can be easily realized (claim 5).
【００２０】この駆動車輪用軸受装置は、前記等速自在
継手の継手外輪のステム基部に、車輪軸受の複列の軌道
面のうち一方の軌道面を一体に形成し、かつ、ステム端
部と前記ハブ輪とを塑性結合させた構造が可能であり
（請求項６）、その塑性結合は、前記ステム端部を外径
側に加締め、前記ハブ輪と一体に結合させることが望ま
しい（請求項７）。In this bearing device for a drive wheel, one of the double row raceway surfaces of the wheel bearing is formed integrally with the stem base of the outer race of the constant velocity universal joint, and the stem end portion is connected to the stem end portion. A structure in which the hub wheel and the hub wheel are plastically connected is possible (claim 6). In the plastic connection, it is desirable that the stem end be swaged to the outer diameter side and integrally connected to the hub wheel (claim 6). Item 7).
【００２１】[0021]
【発明の実施の形態】本発明の実施形態を以下に詳述す
る。図１に示す実施形態は、ハブ輪４１、等速自在継手
４２および複列の車輪軸受４３をユニット化し、自動車
のアウトボード側に位置する駆動車輪用軸受装置であ
り、ハブ輪４１、複列の転動体４４，４５、外輪４６お
よび等速自在継手４２を主要な構成要素としている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail. The embodiment shown in FIG. 1 is a drive wheel bearing device located on the outboard side of an automobile by unitizing a hub wheel 41, a constant velocity universal joint 42, and a double row wheel bearing 43. Rolling elements 44, 45, outer ring 46 and constant velocity universal joint 42 are main components.
【００２２】等速自在継手４２は、内球面５０に複数の
トラック溝５２が円周方向等間隔に軸方向に沿って開口
端に向けて形成された継手外輪５４と、外球面５１に継
手外輪５４のトラック溝５２と対向する複数のトラック
溝５３が円周方向等間隔に軸方向に沿って形成された継
手内輪５５と、継手外輪５４と継手内輪５５の両トラッ
ク溝５２，５３間に介在してトルクを伝達するボール５
６と、継手外輪５４の内球面５０と継手内輪５５の外球
面５１との間に介在して各ボール５６を支持する保持器
５７とを備えている。なお、複数のボール５６は、保持
器５７に形成されたポケット５８に収容されて円周方向
等間隔に配置されている。The constant velocity universal joint 42 includes a joint outer ring 54 in which a plurality of track grooves 52 are formed on the inner spherical surface 50 at equal intervals in the circumferential direction toward the open end along the axial direction. A plurality of track grooves 53 facing the track grooves 52 are formed at equal intervals in the circumferential direction along the axial direction, and are interposed between the track grooves 52, 53 of the joint outer ring 54 and the joint inner ring 55. Ball 5 that transmits torque
6 and a retainer 57 that supports each ball 56 between the inner spherical surface 50 of the joint outer race 54 and the outer spherical surface 51 of the joint inner race 55. The plurality of balls 56 are housed in pockets 58 formed in the retainer 57 and are arranged at regular intervals in the circumferential direction.
【００２３】この実施形態では、等速自在継手４２の継
手内輪５５とシャフト６０とは一体化されている。ま
た、継手外輪５４は、継手内輪５５、ボール５６および
保持器５７を収容したマウス部６１と、そのマウス部６
１から軸方向に一体的に延び、外径面にセレーション部
６４が形成されたステム部６２を有する。このステム部
６２をハブ輪４１の貫通孔６３に挿入し、ステム部６２
の外径面および貫通孔６３の内径面に形成されたセレー
ション部６４，６５により両者を嵌合させることにより
トルク伝達可能としている。この継手外輪５４のステム
端部６６を塑性変形によりハブ輪４１の端部外側に加締
め、継手外輪５４をハブ輪４１に固定して一体化してい
る。なお、セレーション部と称するものには、セレーシ
ョン以外のスプラインも含むものとする。In this embodiment, the joint inner ring 55 of the constant velocity universal joint 42 and the shaft 60 are integrated. Further, the joint outer ring 54 includes a mouth part 61 containing the joint inner ring 55, the ball 56, and the retainer 57, and a mouse part 6.
1 has a stem portion 62 integrally extending in the axial direction and having a serration portion 64 formed on an outer diameter surface. This stem portion 62 is inserted into the through hole 63 of the hub wheel 41, and the stem portion 62 is inserted.
The torque transmission can be performed by fitting the outer diameter surface and the serration portions 64 and 65 formed on the inner diameter surface of the through hole 63. The stem end 66 of the joint outer ring 54 is caulked to the outside of the end of the hub wheel 41 by plastic deformation, and the joint outer ring 54 is fixed to the hub wheel 41 and integrated. In addition, what is called a serration section includes splines other than serrations.
【００２４】ハブ輪４１は、その外径面にアウトボード
側の軌道面４７が形成されると共に、車輪（図示せず）
を取り付けるための車輪取付フランジ４９を一体に備え
ている。このアウトボード側の軌道面４７と、継手外輪
５４のステム基部６７に形成されたインボード側の軌道
面４８とで複列の軌道面を構成する。この継手外輪５４
のステム端部６６の加締めにより、ハブ輪４１のインボ
ード側端部に継手外輪５４のステム基部６７を突き合わ
せ、これにより予圧管理を行っている。The hub wheel 41 has a track surface 47 on the outboard side formed on an outer diameter surface thereof, and a wheel (not shown).
Is integrally provided with a wheel mounting flange 49 for mounting the same. The raceway surface 47 on the outboard side and the raceway surface 48 on the inboard side formed on the stem base 67 of the joint outer race 54 form a double-row raceway surface. This joint outer ring 54
By crimping the stem end portion 66, the stem base portion 67 of the joint outer ring 54 abuts against the inboard end of the hub wheel 41, thereby performing preload control.
【００２５】外輪４６は、内径面にハブ輪４１および継
手外輪５４の軌道面４８と対向する軌道面６８，６９が
形成され、車体（図示せず）に取り付けるための車体取
付フランジ７０を一体に備えている。The outer race 46 has raceway surfaces 68 and 69 formed on the inner diameter surface thereof, which are opposed to the raceway surface 48 of the hub wheel 41 and the joint outer race 54, and integrally includes a vehicle body mounting flange 70 for mounting to a vehicle body (not shown). Have.
【００２６】車輪軸受４３は、複列のアンギュラ玉軸受
構造で、ハブ輪４１および継手外輪５４の外径面に形成
された軌道面４７，４８と外輪４６の内径面に形成され
た軌道面６８，６９との間に転動体４４，４５を介在さ
せ、各列の転動体４４，４５を保持器７１，７２により
円周方向等間隔に支持した構造を有する。The wheel bearing 43 has a double-row angular contact ball bearing structure, and raceway surfaces 47 and 48 formed on the outer diameter surfaces of the hub wheel 41 and the joint outer ring 54 and raceway surfaces 68 formed on the inner diameter surface of the outer ring 46. , 69 are interposed between the rolling elements 44, 45, and the rolling elements 44, 45 in each row are supported at equal intervals in the circumferential direction by retainers 71, 72.
【００２７】車輪軸受４３の両端開口部には、外輪４６
とハブ輪４１および継手外輪５４との環状空間を密封す
る一対のシール７３，７４が外輪４６の端部内径に嵌合
され、内部に充填されたグリースの漏洩ならびに外部か
らの水や異物の侵入を防止するようになっている。An outer ring 46 is provided at both ends of the wheel bearing 43.
A pair of seals 73, 74 for sealing the annular space between the outer ring 46 and the hub ring 41 and the joint outer ring 54 are fitted to the inner diameter of the end of the outer ring 46, and leakage of grease filled therein and intrusion of water and foreign matter from the outside. Is to be prevented.
【００２８】また、等速自在継手４２の内部に封入され
たグリースの漏洩ならびに外部からの水や異物の侵入を
防止するため、シャフト６０と等速自在継手４２との間
に密封用ブーツ７５を装着している。この蛇腹状のブー
ツ７５は、その大径側端部を継手外輪５４のマウス部６
１の外径に嵌着し、小径端部をシャフト６０の外径に嵌
着すると共に、両端部に金属製のブーツバンド７６，７
７を締め付けて気密的に固定される。Further, in order to prevent leakage of grease sealed inside the constant velocity universal joint 42 and intrusion of water or foreign matter from outside, a sealing boot 75 is provided between the shaft 60 and the constant velocity universal joint 42. I am wearing it. The bellows-shaped boot 75 has a large-diameter side end portion formed at the mouth portion 6 of the joint outer ring 54.
1 and a small-diameter end portion is fitted to the outer diameter of the shaft 60, and metal boot bands 76, 7 are provided at both ends.
7 is airtightly fixed.
【００２９】この実施形態の駆動車輪用軸受装置では、
従来の等速自在継手（図４参照）、つまり、継手外輪１
４のトラック溝１２の曲率中心Ｏ1を継手中心Ｐよりも
入口側に配置し、継手内輪１５のトラック溝１３の曲率
中心Ｏ2を継手中心Ｐよりも奥側に配置した構造に対し
て、継手内外輪５５，５４のトラック溝５３，５２の曲
率中心Ｏ2，Ｏ1を逆オフセットする。In the drive wheel bearing device of this embodiment,
A conventional constant velocity universal joint (see FIG. 4), that is, a joint outer ring 1
4, the center of curvature O 1 of the track groove 12 is arranged on the inlet side of the joint center P, and the center of curvature O 2 of the track groove 13 of the joint inner ring 15 is arranged on the back side of the joint center P. The centers of curvature O 2 and O 1 of the track grooves 53 and 52 of the joint inner and outer rings 55 and 54 are reversely offset.
【００３０】すなわち、継手外輪５４のトラック溝５２
の曲率中心Ｏ1を継手中心Ｐよりも奥側に配置し、継手
内輪５５のトラック溝５３の曲率中心Ｏ2を継手中心Ｐ
よりも入口側に配置する。なお、継手外輪５４の内球面
５０と継手内輪５５の外球面５１、つまり、保持器５７
の外径面と内径面については、それぞれの曲率中心は継
手中心Ｐ上にあってオフセットされていない。That is, the track groove 52 of the joint outer ring 54
The centers of curvature O 1 is disposed on the rear side than the joint center P, the center of curvature O 2 of the joint center P of the track grooves 53 of the joint inner ring 55
To the entrance side. The inner spherical surface 50 of the joint outer race 54 and the outer spherical surface 51 of the joint inner race 55, that is, the retainer 57
For the outer diameter surface and the inner diameter surface, the respective centers of curvature are on the joint center P and are not offset.
【００３１】また、保持器５７の奥側内径面を凹球面７
８とし、かつ、入口側内径面を円筒面７９とし、保持器
５７の継手中心Ｐよりも入口側内径面である前記円筒面
７９に、保持器５７と別体のリング状の案内部材８０を
着脱自在に装着する。この案内部材８０は、その内径面
に凹球面８１を有し、保持器５７の円筒面７９に嵌合し
て止め輪８２で位置決め固定される。案内部材８０の取
り付け時、保持器５７の凹球面７８と案内部材８０の凹
球面８１とで継手内輪５５をガイドする。The inner diameter surface on the inner side of the retainer 57 is formed into a concave spherical surface 7.
8, and the inlet side inner diameter surface is a cylindrical surface 79, and a ring-shaped guide member 80 separate from the retainer 57 is provided on the cylindrical surface 79 which is an inlet side inner diameter surface than the joint center P of the retainer 57. Attach it detachably. The guide member 80 has a concave spherical surface 81 on an inner diameter surface thereof, is fitted to a cylindrical surface 79 of the retainer 57, and is positioned and fixed by a retaining ring 82. When the guide member 80 is attached, the joint inner ring 55 is guided by the concave spherical surface 78 of the retainer 57 and the concave spherical surface 81 of the guide member 80.
【００３２】この止め輪８２の着脱により案内部材８０
の取り付けおよび取り外しが容易に行え、継手外輪５４
に対して継手内輪５５を軸方向に引き出すことで離脱可
能とすることができ、等速自在継手４２の分解が容易と
なる。なお、継手内輪５５の組み付け時には、保持器５
７の円筒面７９に案内部材８０が止め輪８２で装着され
て案内部材８０の軸方向移動が規制されているため、継
手内輪５５が抜脱することはない。The attachment and detachment of the retaining ring 82 causes the guide member 80
Can be easily attached and detached, and the joint outer ring 54
By pulling out the joint inner ring 55 in the axial direction, the joint inner ring 55 can be detached, and the constant velocity universal joint 42 can be easily disassembled. When the joint inner ring 55 is assembled, the retainer 5
Since the guide member 80 is mounted on the cylindrical surface 79 of the base member 7 with the retaining ring 82 and the axial movement of the guide member 80 is regulated, the joint inner ring 55 does not come off.
【００３３】従って、ブーツ交換時には、図２に示すよ
うにブーツバンド７６，７７を緩めることによりブーツ
７５の両端部をシャフト６０および継手外輪５４から取
り外し、ブーツ７５をインボード側へ移動させて継手外
輪５４の入口側端部を開放する。そして、保持器５７の
円筒面７９から止め輪８２および案内部材８０を取り外
し、シャフト６０と一体になった継手内輪５５を保持器
５７内から引き出す。Therefore, when replacing the boots, as shown in FIG. 2, by loosening the boot bands 76 and 77, both ends of the boot 75 are removed from the shaft 60 and the outer ring 54 of the joint, and the boot 75 is moved to the inboard side to thereby change the joint. The entrance end of the outer ring 54 is opened. Then, the retaining ring 82 and the guide member 80 are removed from the cylindrical surface 79 of the retainer 57, and the joint inner ring 55 integrated with the shaft 60 is pulled out from the retainer 57.
【００３４】このとき、前述したように継手外輪５４の
トラック溝５２の曲率中心Ｏ1と継手内輪５５のトラッ
ク溝５３の曲率中心Ｏ2が逆オフセットされており、す
なわち、継手外輪５４のトラック溝５２の曲率中心Ｏ1
が継手中心Ｐよりも奥側に配置され、かつ、継手内輪５
５のトラック溝５３の曲率中心Ｏ2が継手中心Ｐよりも
入口側に配置されていることから、前記継手内輪５５を
保持器５７から離脱させることができる。At this time, as described above, the center of curvature O 1 of the track groove 52 of the joint outer ring 54 and the center of curvature O 2 of the track groove 53 of the joint inner ring 55 are reversely offset. 52 center of curvature O 1
Are arranged more deeply than the joint center P, and the joint inner ring 5
Since the center of curvature O 2 of the track groove 53 of No. 5 is located closer to the inlet than the center P of the joint, the joint inner ring 55 can be detached from the retainer 57.
【００３５】前述した実施形態では、複列の軌道面４
７，４８のうち、インボード側の軌道面４８を等速自在
継手４２の継手外輪５４に直接的に形成した構造で、継
手内輪５５とシャフト６０とを一体に形成した場合につ
いて説明したが、本発明はこれに限定されることなく、
図３に示す構造を有する他の実施形態にも適用可能であ
る。In the above-described embodiment, the double row raceway surface 4
7 and 48, the case where the inboard side raceway surface 48 is formed directly on the joint outer ring 54 of the constant velocity universal joint 42 and the joint inner ring 55 and the shaft 60 are integrally formed has been described. The present invention is not limited to this,
The present invention is also applicable to other embodiments having the structure shown in FIG.
【００３６】図３に示す実施形態の駆動車輪用軸受装置
は、インボード側の軌道面４８をハブ輪４１の小径段部
８３に圧入した別体の内輪８４の外周面に形成した構造
で、継手内輪５５’と中空状のシャフト６０’とを別体
にしたものである。また、外径面にセレーション部６
４’が形成されたステム部６２’をハブ輪４１の貫通孔
６３に挿入し、そのステム部６２’の外径面および貫通
孔６３の内径面に形成されたセレーション部６４’，６
５’により両者を嵌合させることによりトルク伝達可能
とし、ステム端部６６’をナット８５で締め付け固定し
ている。なお、図１の実施形態と同一部分には同一参照
符号を付して重複説明は省略する。The drive wheel bearing device of the embodiment shown in FIG. 3 has a structure in which the raceway surface 48 on the inboard side is formed on the outer peripheral surface of a separate inner ring 84 press-fitted into the small-diameter stepped portion 83 of the hub wheel 41. The joint inner ring 55 'and the hollow shaft 60' are separate bodies. Also, serrations 6 on the outer diameter surface
The stem portion 62 'formed with the 4' is inserted into the through hole 63 of the hub wheel 41, and the serration portions 64 'and 6 formed on the outer diameter surface of the stem portion 62' and the inner diameter surface of the through hole 63.
By fitting them together by 5 ', torque can be transmitted, and the stem end 66' is fastened and fixed with a nut 85. The same parts as those in the embodiment of FIG. 1 are denoted by the same reference numerals, and the duplicate description will be omitted.
【００３７】[0037]
【発明の効果】本発明によれば、継手外輪のトラック溝
の曲率中心を継手中心よりも入口側、継手内輪のトラッ
ク溝の曲率中心を継手中心よりも奥側にそれぞれ配置し
た従来の等速自在継手に対して、継手内外輪のトラック
溝の曲率中心を逆オフセットして継手外輪のトラック溝
の曲率中心を継手中心よりも奥側に配置し、保持器の継
手中心よりも入口側内径面に装着された案内部材の着脱
により、継手外輪に対して継手内輪を軸方向に引き出す
ことで離脱可能とすることができる。According to the present invention, the conventional constant velocity in which the center of curvature of the track groove of the outer ring of the joint is located on the inlet side of the center of the joint and the center of curvature of the track groove of the inner ring of the joint is located on the far side of the center of the joint. With respect to the universal joint, the center of curvature of the track groove of the inner and outer rings of the joint is reverse-offset, and the center of curvature of the track groove of the outer ring of the joint is disposed deeper than the center of the joint. By detaching the guide member mounted on the joint, the joint inner ring can be detached by pulling out the joint inner ring with respect to the joint outer ring in the axial direction.
【００３８】このように等速自在継手の分解、つまり、
ブーツ交換が容易となり、そのブーツ交換時の作業工数
や調整作業工数など、ブーツ交換工数が大幅に削減でき
てブーツ交換の作業性が飛躍的に向上する。また、等速
自在継手の組立が簡便化でき、さらに、等速自在継手と
軸部が一体化できて部品点数の削減と小型化が実現容易
となる。Thus, the disassembly of the constant velocity universal joint, that is,
The boot replacement becomes easy, and the boot replacement man-hour such as the work man-hour and the adjustment work man-hour at the time of the boot replacement can be greatly reduced, and the workability of the boot replacement is remarkably improved. Further, the assembly of the constant velocity universal joint can be simplified, and the constant velocity universal joint and the shaft can be integrated, so that the number of parts and the size can be easily reduced.
【図１】本発明の実施形態で、等速自在継手を組み込ん
だ駆動車輪用軸受装置を示す断面図である。FIG. 1 is a sectional view showing a driving wheel bearing device incorporating a constant velocity universal joint according to an embodiment of the present invention.
【図２】図１の駆動車輪用軸受装置において、ブーツ交
換時に部品を分解した状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state where parts are disassembled at the time of boot replacement in the drive wheel bearing device of FIG. 1;
【図３】本発明の他の実施形態で、継手内輪とシャフト
を別体構造とした駆動車輪用軸受装置を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a drive wheel bearing device according to another embodiment of the present invention, in which a joint inner ring and a shaft are formed separately.
【図４】等速自在継手を組み込んだ駆動車輪用軸受装置
の従来例を示す断面図である。FIG. 4 is a sectional view showing a conventional example of a driving wheel bearing device incorporating a constant velocity universal joint.
４１ ハブ輪 ４２ 等速自在継手 ４３ 車輪軸受 ４４，４５ 転動体 ４８ 一方の軌道面 ４９ 車輪取付フランジ ５０ 内球面 ５１ 外球面 ５２，５３ トラック溝 ５４ 継手外輪 ５５ 継手内輪 ５６ ボール ５７ 保持器 ６０ 軸部（シャフト） ６２ ステム部 ６４，６５ セレーション部 ６６ ステム端部 ６７ ステム基部 ７８ 保持器の凹球面 ７９ 円筒面 ８０ 案内部材 ８１ 案内部材の凹球面 ８２ 止め輪 Ｏ1 継手外輪のトラック溝の曲率中心 Ｏ2 継手内輪のトラック溝の曲率中心 Ｐ 継手中心41 Hub wheel 42 Constant velocity universal joint 43 Wheel bearing 44, 45 Rolling element 48 One track surface 49 Wheel mounting flange 50 Inner spherical surface 51 Outer spherical surface 52, 53 Track groove 54 Joint outer ring 55 Joint inner ring 56 Ball 57 Cage 60 Shaft (Shaft) 62 Stem portion 64, 65 Serration portion 66 Stem end portion 67 Stem base portion 78 Concave spherical surface of cage 79 Cylindrical surface 80 Guide member 81 Concave spherical surface of guide member 82 Retaining ring O 1 Center of curvature O of track groove of joint outer ring O 2 Center of curvature of track groove of joint inner ring P Joint center
Claims (7)
た継手外輪と、外球面に前記継手外輪のトラック溝と対
向する曲線状のトラック溝が形成された継手内輪と、こ
れら両トラック溝間に組み込まれてトルクを伝達するボ
ールと、前記継手外輪の内球面および継手内輪の外球面
に案内されて前記ボールを支持する保持器とからなり、
前記継手外輪のトラック溝の曲率中心と前記継手内輪の
トラック溝の曲率中心とを継手中心より軸方向両側に等
距離オフセットさせた等速自在継手において、 前記継手外輪のトラック溝の曲率中心を前記継手中心よ
りも奥側に配置すると共に、前記保持器の継手中心より
も入口側内径面に別体の案内部材を着脱自在に装着した
ことを特徴とする等速自在継手。1. A joint outer race having a curved track groove formed on an inner spherical surface, a joint inner race having a curved track groove opposed to a track groove of the joint outer race formed on an outer spherical surface, and both of these track grooves. A ball that is incorporated in between and transmits torque, and a retainer that is guided by the inner spherical surface of the joint outer ring and the outer spherical surface of the joint inner ring to support the ball,
In a constant velocity universal joint in which a center of curvature of a track groove of the outer ring of the joint and a center of curvature of a track groove of the inner ring of the joint are offset from the center of the joint by equal distances on both sides in the axial direction, the center of curvature of the track groove of the outer ring of the joint is A constant velocity universal joint, wherein the constant velocity universal joint is disposed at a position deeper than the joint center and a separate guide member is detachably attached to an inner diameter surface of the retainer on the inlet side with respect to the joint center.
つ、入口側内径面を円筒面とし、この円筒面に、凹球面
を有する前記案内部材を嵌合して止め輪で位置決め固定
したことを特徴とする請求項１に記載の等速自在継手。2. The retainer has a concave inner spherical surface on an inner diameter side and a cylindrical inner diameter surface on an inlet side. The guide member having a concave spherical surface is fitted to the cylindrical surface and positioned and fixed by a retaining ring. The constant velocity universal joint according to claim 1, wherein:
とを特徴とする請求項１又は２に記載の等速自在継手。3. The constant velocity universal joint according to claim 1, wherein a shaft portion is formed integrally with said joint inner ring.
自在継手を複列の車輪軸受にトルク伝達可能に結合させ
たことを特徴とする駆動車輪用軸受装置。4. A bearing device for a drive wheel, wherein the constant velocity universal joint according to claim 1 is coupled to a double row wheel bearing so as to transmit torque.
延びるステム部を一体に有し、車輪取付フランジを一体
に有するハブ輪に前記ステム部をセレーション部を介し
て内嵌したことを特徴とする請求項４に記載の駆動車輪
用軸受装置。5. The outer race of the constant velocity universal joint has a stem portion integrally extending in the axial direction, and the stem portion is fitted through a serration portion to a hub wheel integrally having a wheel mounting flange. The bearing device for a drive wheel according to claim 4, characterized in that:
部に、車輪軸受の複列の軌道面のうち一方の軌道面を一
体に形成し、かつ、ステム端部と前記ハブ輪とを塑性結
合させたことを特徴とする請求項４又は５に記載の駆動
車輪用軸受装置。6. A one-way raceway surface of a double row raceway surface of a wheel bearing is integrally formed on a stem base of a joint outer race of the constant velocity universal joint, and a stem end and the hub wheel are formed plastically. The drive wheel bearing device according to claim 4 or 5, wherein the drive wheel bearing device is coupled.
ハブ輪と一体に結合させたことを特徴とする請求項６に
記載の駆動車輪用軸受装置。7. The drive wheel bearing device according to claim 6, wherein the stem end portion is swaged to the outer diameter side and integrally connected to the hub wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000340801A JP2002147483A (en) | 2000-11-08 | 2000-11-08 | Constant velocity universal joint and bearing device for drive wheel equipped therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000340801A JP2002147483A (en) | 2000-11-08 | 2000-11-08 | Constant velocity universal joint and bearing device for drive wheel equipped therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002147483A true JP2002147483A (en) | 2002-05-22 |
Family
ID=18815659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000340801A Withdrawn JP2002147483A (en) | 2000-11-08 | 2000-11-08 | Constant velocity universal joint and bearing device for drive wheel equipped therewith |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002147483A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260435A (en) * | 2007-04-12 | 2008-10-30 | Ntn Corp | Axle module for rear wheel |
| WO2009037936A1 (en) * | 2007-09-19 | 2009-03-26 | Ntn Corporation | Sliding type constant velocity universal joint |
| CN113700760A (en) * | 2021-09-13 | 2021-11-26 | 泰安英迪利机电科技有限公司 | Method for assembling and replacing reed of serpentine spring coupling |
-
2000
- 2000-11-08 JP JP2000340801A patent/JP2002147483A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260435A (en) * | 2007-04-12 | 2008-10-30 | Ntn Corp | Axle module for rear wheel |
| WO2009037936A1 (en) * | 2007-09-19 | 2009-03-26 | Ntn Corporation | Sliding type constant velocity universal joint |
| CN113700760A (en) * | 2021-09-13 | 2021-11-26 | 泰安英迪利机电科技有限公司 | Method for assembling and replacing reed of serpentine spring coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040922 |
|
| A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20061013 |