JP2009185878A - Constant speed universal joint and shaft assembly - Google Patents

Constant speed universal joint and shaft assembly Download PDF

Info

Publication number
JP2009185878A
JP2009185878A JP2008025472A JP2008025472A JP2009185878A JP 2009185878 A JP2009185878 A JP 2009185878A JP 2008025472 A JP2008025472 A JP 2008025472A JP 2008025472 A JP2008025472 A JP 2008025472A JP 2009185878 A JP2009185878 A JP 2009185878A
Authority
JP
Japan
Prior art keywords
inner ring
shaft
power transmission
transmission shaft
universal joint
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.)
Pending
Application number
JP2008025472A
Other languages
Japanese (ja)
Inventor
Masazumi Kobayashi
正純 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2008025472A priority Critical patent/JP2009185878A/en
Publication of JP2009185878A publication Critical patent/JP2009185878A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To control as much as possible the looseness in the axial direction generated between the inner ring and a power transfer shaft when attaching the power transfer shaft to the inner ring by introducing refinements to the inner ring of a constant speed universal joint. <P>SOLUTION: A shaft end 2x of the power transfer shaft 2 is engaged with the inner peripheral side of the inner ring 1 by the regulation of its movement in the circumferential direction. An anti-come-off member 3 (for example, a round circlip) is attached to the position of the shaft end 2x which is close to the shaft end of the shaft end 2x of the power transfer shaft 2, and the part on the shaft end side of the inner ring 1 can be brought into contact with the anti-come-off member 3. Then the part on the shaft center side of the inner ring 1 of the constant speed universal joint can be brought into contact with the shoulder 2c which is arranged in the position of the shaft end 2x which is close to the shaft center of the shaft end 2x of the power transfer shaft 2. At least either the contact part 1b of the inner ring 1 with respect to the anti-come-off member 3 or the contact part 1c of the inner ring 1 with respect to the shoulder 2c is formed by processing performed after heat treatment (for example, quenching steel cutting). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、動力伝達軸及びシャフトアッセンブリに係り、詳しくは、動力伝達軸の軸端部が内輪の内周側に嵌合される等速自在継手、及びその等速自在継手と動力伝達軸とを備えてなるシャフトアッセンブリの改良に関する。   The present invention relates to a power transmission shaft and a shaft assembly, and more specifically, a constant velocity universal joint in which a shaft end portion of the power transmission shaft is fitted to an inner peripheral side of an inner ring, and the constant velocity universal joint and the power transmission shaft. The present invention relates to an improvement in a shaft assembly comprising:

周知のように、等速自在継手は、内周面に軸方向に延びる複数の案内溝が形成された外輪と、外周面に軸方向に延びる複数の案内溝が形成された内輪と、これらの外輪及び内輪の案内溝が協働して形成するボールトラックに配された複数のトルク伝達部材と、該トルク伝達部材を保持する保持器とを備えて構成されているのが一般的である。また、トリポード型の等速自在継手(TJ)は、内周面に複数の軸方向溝が形成された外輪と、該外輪の内部に収容される内輪と、該内輪の外周面に回動自在に保持され且つ内輪及び外輪の相互間でトルクを伝達するトルク伝達部材(ローラ)とを備えている。これらの等速自在継手における内輪の内周側には、駆動軸または従動軸もしくは中間軸などの動力伝達軸の軸端部が、セレーションまたはスプラインなどにより周方向移動(周方向相対移動)を規制されて嵌合されるのが通例である。   As is well known, the constant velocity universal joint includes an outer ring in which a plurality of guide grooves extending in the axial direction is formed on the inner peripheral surface, an inner ring in which a plurality of guide grooves extending in the axial direction are formed in the outer peripheral surface, and these In general, the outer ring and the inner ring are configured to include a plurality of torque transmission members arranged on a ball track formed by the cooperation of guide grooves of the inner ring and a cage that holds the torque transmission members. The tripod type constant velocity universal joint (TJ) is freely rotatable on an outer ring having a plurality of axial grooves formed on the inner peripheral surface, an inner ring accommodated in the outer ring, and an outer peripheral surface of the inner ring. And a torque transmission member (roller) that transmits torque between the inner ring and the outer ring. On the inner circumference side of the inner ring of these constant velocity universal joints, the shaft end of the power transmission shaft such as the drive shaft, driven shaft or intermediate shaft regulates circumferential movement (circumferential relative movement) by serrations or splines. It is customary to be fitted.

詳述すると、等速自在継手と動力伝達軸とを備えてなるシャフトアッセンブリは、内輪の内周面に形成されたセレーションまたはスプライン状などの歯型と、動力伝達軸の軸端部の外周面に形成されたセレーションまたはスプライン状などの歯型とを嵌合させる構造が一般的に採用され、公知の如く、セレーションとスプラインとは歯型形状により区別される。   More specifically, a shaft assembly including a constant velocity universal joint and a power transmission shaft has a serration or spline-like tooth shape formed on the inner peripheral surface of the inner ring, and an outer peripheral surface of the shaft end portion of the power transmission shaft. In general, a structure for fitting a tooth type such as a serration or a spline formed in the above is employed, and as is well known, the serration and the spline are distinguished by the shape of the tooth type.

この種のシャフトアッセンブリにおける内輪の動力伝達軸に対する軸方向移動を規制する両者の結合構造としては、図6及び図7に示すように、動力伝達軸12の軸端部12xにおける軸端寄り位置に形成された周溝12bに丸サークリップ13を装着すると共に、その軸端部12xにおける軸中央寄り位置に肩部12cを一体形成する。そして、内輪11の歯型11aの継手内部側に位置する内部側チャンファ11bを丸サークリップ13に当接させ、且つ内輪12の継手入口側に位置する入口側チャンファ11cを肩部12cに当接させることが一例として挙げられる(特許文献1の図1参照)。この場合、肩部12cは、上記の如く動力伝達軸12に一体形成されるものに限られず、例えば動力伝達軸12の該当する位置に周溝を形成すると共にその周溝に止め輪を装着し、且つその止め輪の軸端側の面部分を肩部として、内輪の入口側端面を当接させる構造であってもよい(特許文献1の図5(b)参照)。   As shown in FIGS. 6 and 7, the coupling structure for restricting the axial movement of the inner ring with respect to the power transmission shaft in this type of shaft assembly is a position near the shaft end of the shaft end portion 12 x of the power transmission shaft 12. The circular circlip 13 is attached to the formed circumferential groove 12b, and a shoulder 12c is integrally formed at a position near the center of the shaft at the shaft end 12x. The inner chamfer 11b located on the inner side of the joint of the tooth ring 11a of the inner ring 11 is brought into contact with the circular circlip 13, and the inlet chamfer 11c located on the joint inlet side of the inner ring 12 is brought into contact with the shoulder 12c. It is mentioned as an example (refer FIG. 1 of patent document 1). In this case, the shoulder portion 12c is not limited to being integrally formed with the power transmission shaft 12 as described above. For example, a circumferential groove is formed at a corresponding position of the power transmission shaft 12, and a retaining ring is attached to the circumferential groove. Further, the structure may be such that the surface portion on the shaft end side of the retaining ring is used as a shoulder portion and the end surface on the inlet side of the inner ring is brought into contact (see FIG. 5B of Patent Document 1).

特許第3188001号公報Japanese Patent No. 3188001

ところで、従来においては、上記例示の結合構造を採用した場合、等速自在継手の内輪11に動力伝達軸12を組み付けた後に、両者11、12間に軸方向のガタツキが発生するという問題を招来していた。特に、この種のシャフトアッセンブリが自動車のドライブシャフトやプロペラシャフトに適用される場合に、上記の内輪11と動力伝達軸12との間の軸方向のガタツキが大きいと、自動車の振動特性を悪化させる要因となる。   By the way, in the past, when the above-described coupling structure is adopted, there is a problem that an axial backlash occurs between the power transmission shaft 12 and the inner ring 11 of the constant velocity universal joint after the power transmission shaft 12 is assembled. Was. In particular, when this type of shaft assembly is applied to a drive shaft or propeller shaft of an automobile, if the backlash in the axial direction between the inner ring 11 and the power transmission shaft 12 is large, the vibration characteristics of the automobile are deteriorated. It becomes a factor.

したがって、図7(a)に示す内輪11の内部側チャンファ11bにおける丸サークリップ13との当接基準位置11boから入口側チャンファ11cにおける肩部12cとの当接基準位置11coまでの寸法L1と、同図(b)に示す動力伝達軸12の周溝12bにおける丸サークリップ13との当接基準位置12boから肩部12cにおける入口側チャンファ11cとの当接基準位置12coまでの寸法L2とを、適正に合致させるべく厳しく管理する必要がある。   Therefore, the dimension L1 from the contact reference position 11bo of the inner chamfer 11b of the inner ring 11 shown in FIG. 7A to the contact circlip position 11bo of the circular circlip 13 to the contact reference position 11co of the shoulder portion 12c of the inlet chamfer 11c, The dimension L2 from the contact reference position 12bo with the circular circlip 13 in the circumferential groove 12b of the power transmission shaft 12 to the contact reference position 12co with the inlet chamfer 11c in the shoulder 12c shown in FIG. It is necessary to manage strictly to make it fit properly.

しかしながら、従来の結合構造では、鋼からなる内輪11の内部側チャンファ11b(内部側当接部)や入口側チャンファ11c(入口側当接部)を含む大半の切削加工を完了した後に、高周波熱処理や浸炭熱処理等の熱処理を施し、その後、図6(a)に示す状態となるように内輪11に動力伝達軸12を組み付けているのが通例であった。そのため、内輪11における上記の当接基準位置11bo、11co間の寸法L1が、熱処理変形に起因してバラツキが生じることにより適正でなくなることから、図6(b){図6(a)に符号A2を付した箇所の拡大図}に示すように丸サークリップ13と内輪11の内部側チャンファ11bとの間の隙間Sが大きくなり、その結果、内輪11と動力伝達軸12との間に、許容しがたい軸方向のガタツキが生じ得ることになる。   However, in the conventional coupling structure, after most of the cutting work including the inner chamfer 11b (inner contact part) and the inlet chamfer 11c (inlet contact part) of the inner ring 11 made of steel is completed, the high frequency heat treatment is performed. Typically, heat treatment such as carburizing heat treatment is performed, and then the power transmission shaft 12 is assembled to the inner ring 11 so as to be in the state shown in FIG. For this reason, the dimension L1 between the contact reference positions 11bo and 11co in the inner ring 11 is not appropriate due to variations caused by heat treatment deformation. Therefore, FIG. 6B {reference to FIG. 6A As shown in the enlarged view of the portion with A2}, the clearance S between the circular circlip 13 and the inner chamfer 11b of the inner ring 11 is increased, and as a result, between the inner ring 11 and the power transmission shaft 12, Unacceptable axial backlash can occur.

本発明は、上記事情に鑑み、等速自在継手の内輪に工夫を講じることにより、内輪に動力伝達軸を組み付けた場合における両者間に生じ得る軸方向のガタツキを可及的に抑制することを技術的課題とする。   In view of the above circumstances, the present invention is designed to suppress as much as possible the axial backlash that may occur between the inner rings when the power transmission shaft is assembled to the inner ring by devising the inner ring of the constant velocity universal joint. Technical issue.

上記技術的課題を解決するために創案された本発明に係る等速自在継手は、動力伝達軸の軸端部が周方向移動を規制されて内周側に嵌合される内輪を備えると共に、前記動力伝達軸の軸端部の軸端寄り位置に装着された抜け止め部材に、前記内輪の軸端側部位が当接可能とされ、且つ前記動力伝達軸の軸端部の軸中央寄り位置に配設された肩部に、前記内輪の軸中央側部位が当接可能とされた等速自在継手において、前記内輪の抜け止め部材に対する当接部と、前記内輪の肩部に対する当接部との少なくとも一方が、熱処理後における加工により形成されていることに特徴づけられる。ここで、上記の「配設された肩部」とは、動力伝達軸に肩部が一体形成されている場合に限られず、例えば動力伝達軸に周溝を形成し且つその周溝に肩部の役割を果たす止め輪を装着した場合等をも含む(以下、同様)。   The constant velocity universal joint according to the present invention, which was created to solve the above technical problem, includes an inner ring in which the shaft end portion of the power transmission shaft is restricted from moving in the circumferential direction and fitted to the inner peripheral side, A shaft end side portion of the inner ring can be brought into contact with a retaining member mounted at a position near the shaft end of the shaft end portion of the power transmission shaft, and a position near the shaft center of the shaft end portion of the power transmission shaft In the constant velocity universal joint in which the shaft central side portion of the inner ring can be brought into contact with the shoulder portion disposed on the inner ring, the contact portion with respect to the retaining member of the inner ring and the contact portion with respect to the shoulder portion of the inner ring Is characterized by being formed by processing after heat treatment. Here, the “arranged shoulder portion” is not limited to the case where the shoulder portion is integrally formed with the power transmission shaft. For example, a circumferential groove is formed in the power transmission shaft, and the shoulder portion is formed in the circumferential groove. This includes the case where a retaining ring that plays the role of is attached (hereinafter the same).

このような構成によれば、内輪(好ましくは内輪の必要箇所)の熱処理後に、抜け止め部材に当接する内輪の軸端側の当接部と、軸肩部に当接する内輪の軸中央側の当接部との少なくとも一方が、切削(例えば焼入れ鋼切削)等の加工によって形成されていることから、熱処理変形による悪影響を受けることなく、内輪の両当接部の相互間寸法を極めて正確にして高精度化を図ることができる。これにより、抜け止め部材と内輪の軸端側との当接箇所、及び軸肩部と内輪の軸中央側との当接箇所に不当な大きさの隙間が生じなくなり、内輪への動力伝達軸の組み付け後に、両者間に不当な軸方向のガタツキが生じるという不具合を可及的に抑止することが可能となる。そして、この等速自在継手の内輪に動力伝達軸が組み付けられてなるシャフトアッセンブリを自動車に適用すれば、自動車の振動特性を改善することができる。なお、抜け止め部材及び軸肩部に当接可能な内輪の部位は、後述する内輪の両端チャンファに限られず、内輪のチャンファではない両端部であってもよく、また内輪の歯型の両端部(チャンファである場合を含む)であってもよい。   According to such a configuration, after the heat treatment of the inner ring (preferably a necessary portion of the inner ring), the contact portion on the shaft end side of the inner ring that contacts the retaining member and the shaft center side of the inner ring that contacts the shaft shoulder portion. Since at least one of the contact parts is formed by machining such as cutting (for example, hardened steel cutting), the mutual dimension between both contact parts of the inner ring is made extremely accurate without being adversely affected by heat treatment deformation. Therefore, high accuracy can be achieved. As a result, an inappropriately large gap is not generated at the contact portion between the retaining member and the shaft end side of the inner ring and the contact portion between the shaft shoulder portion and the shaft central side of the inner ring, and the power transmission shaft to the inner ring is prevented. After assembling, it is possible to suppress as much as possible the problem of unjustified axial backlash between the two. And if the shaft assembly by which a power transmission shaft is assembled | attached to the inner ring | wheel of this constant velocity universal joint is applied to a motor vehicle, the vibration characteristic of a motor vehicle can be improved. The part of the inner ring that can come into contact with the retaining member and the shaft shoulder is not limited to both end chamfers of the inner ring, which will be described later, and may be both end parts that are not chamfers of the inner ring, or both end parts of the inner ring tooth mold. (Including the case of chamfa).

この場合、前記内輪の内周面に、前記動力伝達軸の軸端部の外周面に形成されたセレーション又はスプライン状の歯型に嵌合可能なセレーション又はスプライン状の歯型が形成されると共に、前記内輪の継手内部側に位置する内部側チャンファに、前記抜け止め部材が当接可能とされ、且つ、前記内輪の継手入口側に位置する入口側チャンファに、前記肩部が当接可能とされるように構成することができる。   In this case, a serration or spline-shaped tooth mold that can be fitted to a serration or spline-shaped tooth pattern formed on the outer peripheral surface of the shaft end portion of the power transmission shaft is formed on the inner peripheral surface of the inner ring. The retaining member can be brought into contact with an inner chamfer located on the inner side of the joint of the inner ring, and the shoulder can be brought into contact with an inlet chamfer located on the joint inlet side of the inner ring. Can be configured.

このようにすれば、等速自在継手の内輪が、セレーション又はスプライン状の歯型の嵌合により、動力伝達軸に対して周方向移動(周方向相対移動)を規制された上で、内輪の内部側チャンファに、動力伝達軸の周溝に装着された抜け止め部材が適正に当接し、且つ内輪の入口側チャンファに、動力伝達軸の肩部が適正に当接して、両者の軸方向位置決めが正確且つガタツキなく行われることになる。   In this way, the inner ring of the constant velocity universal joint is restricted from moving in the circumferential direction (relative movement in the circumferential direction) with respect to the power transmission shaft by the serration or spline-like tooth fitting, and the inner ring The retaining member mounted in the circumferential groove of the power transmission shaft properly contacts the inner chamfer, and the shoulder of the power transmission shaft properly contacts the inlet chamfer of the inner ring. Is performed accurately and without backlash.

上記の内輪は、材質が鋼であり、前記熱処理は、高周波熱処理、或いは、浸炭熱処理であることが好ましい。ここで、上記の「高周波熱処理」としては、高周波焼入れ焼き戻しまたは高周波焼入れを代表例として挙げることができ、また上記の「浸炭熱処理」としては、浸炭焼入れ焼き戻し、浸炭焼入れ、浸炭窒化焼入れ焼き戻しまたは浸炭窒化焼入れを代表例として挙げることができる。   The inner ring is preferably made of steel, and the heat treatment is preferably an induction heat treatment or a carburizing heat treatment. Here, as the above “induction heat treatment”, induction hardening and tempering or induction hardening can be given as representative examples, and as the above “carburization heat treatment”, carburizing and quenching tempering, carburizing and quenching, and carbonitriding and quenching and hardening are possible. A typical example is reversion or carbonitriding.

このようにすれば、内輪の必要箇所の表層部を硬質にして耐久性の向上を図ることが可能となる。   If it does in this way, it will become possible to aim at the improvement of durability by making the surface layer part of the required part of an inner ring hard.

上記の熱処理後の加工は、焼入れ鋼切削加工であることが好適である。ここで、「焼入れ鋼切削加工」とは、切削油を使用することなく、セラミック、サーメット、CBNなどの専用チップを用いて、焼入れ後の高硬度鋼を旋削等で仕上げる加工のことを意味する。   The processing after the heat treatment is preferably a hardened steel cutting process. Here, “quenched steel cutting” means a process of turning hardened steel after quenching by turning or the like using a dedicated chip such as ceramic, cermet, CBN, etc. without using cutting oil. .

このようにすれば、切削油を使用することなく加工できることから、環境面で有利になると共に、切削加工後の面性状も優れたものとなる。   If it does in this way, since it can process without using cutting oil, while becoming advantageous in an environmental aspect, the surface property after cutting will also become excellent.

また、前記抜け止め部材は、丸サークリップ、或いは、スナップリングであることが好ましい。   The retaining member is preferably a circular circlip or a snap ring.

このようにすれば、等速自在継手の内輪の軸端側への軸方向移動が、動力伝達軸の周溝に装着された丸サークリップまたはスナップリングによって確実且つ適切に規制されることになる。   In this way, the axial movement of the constant velocity universal joint toward the shaft end side of the inner ring is surely and appropriately regulated by the circular circlip or snap ring mounted in the circumferential groove of the power transmission shaft. .

一方、上記技術的課題を解決するために創案された本発明に係るシャフトアッセンブリは、等速自在継手の内輪の内周面と動力伝達軸の軸端部の外周面とを周方向移動を規制して嵌合させると共に、前記動力伝達軸の軸端部の軸端寄り位置に周溝を形成して、該周溝に装着された抜け止め部材に、前記内輪の軸端側部位を当接させ、且つ前記動力伝達軸の軸端部の軸中央寄り位置に配設した肩部に、前記内輪の軸中央側部位を当接させて、前記内輪の動力伝達軸に対する軸方向移動を規制するように構成したシャフトアッセンブリにおいて、前記内輪の抜け止め部材に対する当接部と、前記内輪の肩部に対する当接部との少なくとも一方が、熱処理後における加工により形成されていることに特徴づけられる。   On the other hand, the shaft assembly according to the present invention, which was created to solve the above technical problem, restricts circumferential movement of the inner peripheral surface of the inner ring of the constant velocity universal joint and the outer peripheral surface of the shaft end of the power transmission shaft. And a circumferential groove is formed at a position near the shaft end of the shaft end portion of the power transmission shaft, and a shaft end side portion of the inner ring is brought into contact with a retaining member attached to the circumferential groove. The axial movement of the inner ring with respect to the power transmission shaft is restricted by bringing a shaft central side portion of the inner ring into contact with a shoulder disposed near the axial center of the shaft end of the power transmission shaft. The shaft assembly configured as described above is characterized in that at least one of the contact portion with respect to the retaining member of the inner ring and the contact portion with respect to the shoulder portion of the inner ring is formed by processing after heat treatment.

このようなシャフトアッセンブリによっても、等速自在継手の内輪の熱処理後に、内輪の抜け止め部材に対する当接部と、内輪の軸肩部に対する当接部との少なくとも一方が、切削(例えば焼入れ鋼切削)等の加工によって形成されていることから、このような構成に対応する既述の作用効果が同様にして得られる。   Even with such a shaft assembly, after the heat treatment of the inner ring of the constant velocity universal joint, at least one of the abutting portion with respect to the retaining member of the inner ring and the abutting portion with respect to the shaft shoulder portion of the inner ring is cut (for example, hardened steel cutting). ) And the like, the above-described operational effects corresponding to such a configuration can be obtained in the same manner.

この場合、前記等速自在継手の内輪の内周面に形成されたセレーションまたはスプライン状の歯型と、前記動力伝達軸の軸端部の外周面に形成されたセレーションまたはスプライン状の歯型とを嵌合させると共に、前記動力伝達軸の周溝に装着された抜け止め部材に、前記内輪の継手内部側に位置する内部側チャンファが当接し、且つ、前記動力伝達軸の肩部に、前記内輪の継手入口側に位置する入口側チャンファが当接した構成とすることができる。   In this case, a serration or spline-shaped tooth pattern formed on the inner peripheral surface of the inner ring of the constant velocity universal joint, and a serration or spline-shaped tooth pattern formed on the outer peripheral surface of the shaft end portion of the power transmission shaft, And an internal chamfer located on the inner side of the joint of the inner ring abuts on a retaining member mounted in a circumferential groove of the power transmission shaft, and the shoulder portion of the power transmission shaft It can be set as the structure which the entrance side chamfer located in the joint entrance side of an inner ring contact | abutted.

このようにした場合にも、等速自在継手の内輪が、セレーション又はスプライン状の歯型の嵌合により、動力伝達軸に対して周方向移動(周方向相対移動)を規制された上で、内輪の内部側チャンファに、動力伝達軸の周溝に装着された抜け止め部材が適正に当接し、且つ内輪の入口側チャンファに、動力伝達軸の肩部が適正に当接して、両者の軸方向位置決めが正確且つガタツキなく行われることになる。   Even in this case, after the inner ring of the constant velocity universal joint is restricted from moving in the circumferential direction (relative movement in the circumferential direction) with respect to the power transmission shaft by the fitting of the serration or spline-like tooth shape, The retaining member mounted in the circumferential groove of the power transmission shaft properly contacts the inner ring chamfer of the inner ring, and the shoulder of the power transmission shaft properly contacts the inlet ring chamfer of the inner ring. Directional positioning is performed accurately and without backlash.

また、このシャフトアッセンブリは、ドライブシャフトアッセンブリまたはプロペラシャフトアッセンブリに使用することが好適である。   The shaft assembly is preferably used for a drive shaft assembly or a propeller shaft assembly.

このようにすれば、自動車用のシャフトアッセンブリとして有効利用され、自動車の振動特性を効果的に改善することが可能となる。   If it does in this way, it will be used effectively as a shaft assembly for vehicles, and it will become possible to improve the vibration characteristic of vehicles effectively.

以上のように本発明によれば、等速自在継手の内輪に対して高周波熱処理や浸炭熱処理等の熱処理を施した後に、抜け止め部材に当接する内輪の軸端側の当接部と、軸肩部に当接する内輪の軸中央側の当接部との少なくとも一方を、切削(例えば焼入れ鋼切削)等の加工により形成していることから、熱処理変形による悪影響を受けることなく、内輪の両当接部の相互間寸法を極めて正確にして高精度化を図ることができ、内輪への動力伝達軸の組み付け後に、両者間に不当な軸方向のガタツキが生じるという不具合を可及的に抑止することが可能となる。   As described above, according to the present invention, the inner ring of the constant velocity universal joint is subjected to heat treatment such as high frequency heat treatment or carburizing heat treatment, and then the shaft end side contact portion of the inner ring that contacts the retaining member, and the shaft Since at least one of the abutting portion on the shaft center side of the inner ring that abuts against the shoulder is formed by processing such as cutting (for example, hardened steel cutting), both inner rings are not affected by heat treatment deformation. The mutual dimensions of the abutment parts can be made extremely accurate to achieve high accuracy, and after the assembly of the power transmission shaft to the inner ring, the problem of undue axial backlash between the two is suppressed as much as possible. It becomes possible to do.

以下、本発明の実施形態に係る等速自在継手及びこれを用いたシャフトアッセンブリを図面を参照しつつ説明する。   Hereinafter, a constant velocity universal joint according to an embodiment of the present invention and a shaft assembly using the same will be described with reference to the drawings.

図1(a)は、本発明の第1実施形態に係る等速自在継手の内輪1に動力伝達軸2が組み付けられてなるシャフトアッセンブリ10の要部を示す概略縦断側面図、図1(b)は、図1(a)の符号Aで示す箇所の拡大縦断側面図、図2(a)は、上記の内輪1を単体として示す概略縦断側面図、図2(b)は、上記の動力伝達軸2を単体として示す概略側面図である。なお、この第1実施形態では、等速自在継手が、BJ(ボールフィックスドジョイント)に係る場合を例示している。   FIG. 1A is a schematic longitudinal side view showing a main part of a shaft assembly 10 in which a power transmission shaft 2 is assembled to an inner ring 1 of a constant velocity universal joint according to a first embodiment of the present invention, FIG. ) Is an enlarged vertical side view of the portion indicated by reference numeral A in FIG. 1A, FIG. 2A is a schematic vertical side view showing the inner ring 1 as a single unit, and FIG. It is a schematic side view which shows the transmission shaft 2 as a single unit. In addition, in this 1st Embodiment, the constant velocity universal joint has illustrated the case where it concerns on BJ (ball-fixed joint).

図1及び図2に示すように、等速自在継手の内輪1は、外周面に軸方向に延びる複数の案内溝1xが形成されると共に、内周面にセレーション1a(またはスプライン)が形成されている。このセレーション1aの継手内部側の端部(同図の左端部)には、内部側チャンファ1bが形成されると共に、継手入口側の端部(同図の右端部)には、入口側チャンファ1cが形成されている。   As shown in FIGS. 1 and 2, the inner ring 1 of the constant velocity universal joint has a plurality of guide grooves 1x extending in the axial direction on the outer peripheral surface and serrations 1a (or splines) formed on the inner peripheral surface. ing. An inner chamfer 1b is formed at the end of the serration 1a on the inner side of the joint (the left end in the figure), and an inlet chamfer 1c is formed at the end on the joint inlet side (the right end in the figure). Is formed.

この場合、入口側チャンファ1cは、含軸断面形状が、継手入口側に移行するに連れて直線状に外周側に移行する直線部1caのみからなるテーパ状とされている。これに対して、内部側チャンファ1bは、含軸断面形状が、継手内部側に移行するに連れて直線状に外周側に移行する直線部1baと、この直線部1baの外周側を継手内部側に向かって中心軸と平行に延びる直線部1bbと、この両直線部1ba、1bbを滑らかに繋ぐ凹状の湾曲線部1bcとを有する部分テーパ状とされている(図1(b)参照)。なお、内部側チャンファ1bの直線部1baは、入口側チャンファ1cの直線部1caよりも中心軸を基準として勾配が大きくなっている。   In this case, the inlet-side chamfer 1c has a tapered cross section including only a straight portion 1ca that linearly moves to the outer peripheral side as it moves to the joint inlet side. On the other hand, the inner chamfer 1b includes a straight portion 1ba whose shaft-containing cross-sectional shape moves linearly to the outer peripheral side as it moves to the inner side of the joint, and an outer peripheral side of the straight portion 1ba on the inner side of the joint. It is made into the part taper shape which has the linear part 1bb extended in parallel with a central axis toward this, and the concave curved line part 1bc which connects both these linear parts 1ba and 1bb smoothly (refer FIG.1 (b)). Note that the straight portion 1ba of the inner chamfer 1b has a larger gradient with respect to the central axis than the straight portion 1ca of the inlet chamfer 1c.

更に、この内輪1は材質が鋼であって、高周波熱処理または浸炭熱処理等の熱処理を施した後に、内部側チャンファ1bと入口側チャンファ1cとが焼入れ鋼切削加工により形成されている。なお、この内輪1の入口側については、入口側チャンファ1cから内輪1の本体に亘って延長して直線状に延びるテーパ部の全長が、上記の熱処理後における焼入れ鋼切削加工により形成されている。   Further, the inner ring 1 is made of steel, and after performing heat treatment such as induction heat treatment or carburizing heat treatment, the inner chamfer 1b and the inlet chamfer 1c are formed by quenching steel cutting. In addition, about the inlet side of this inner ring | wheel 1, the full length of the taper part extended over the main body of the inner ring | wheel 1 from the inlet side chamfer 1c is formed by hardening steel cutting after said heat processing. .

一方、図1及び図2に示すように、動力伝達軸2は、軸端部2xの外周面にセレーション2a(またはスプライン)が形成されている。そして、この動力伝達軸2の軸端部2xにおける軸端寄り位置(同図の左寄り位置)には、抜け止め部材としての断面が円形の丸サークリップ3を装着する周溝2bが、セレーション2aを切除して形成されている。なお、この周溝2bの底面の含軸断面形状は、軸方向中央が窪む円弧とされると共に、この周溝2bの対向する両側面はそれぞれ軸直角面と平行な平面とされている。   On the other hand, as shown in FIGS. 1 and 2, the power transmission shaft 2 has serrations 2a (or splines) formed on the outer peripheral surface of the shaft end 2x. A circumferential groove 2b for mounting a circular circlip 3 having a circular cross section as a retaining member is provided at a position near the shaft end (left position in the figure) of the shaft end portion 2x of the power transmission shaft 2 with a serration 2a. It is formed by excision. The axial cross-sectional shape of the bottom surface of the circumferential groove 2b is a circular arc whose center in the axial direction is recessed, and both opposing side surfaces of the circumferential groove 2b are planes parallel to the axis perpendicular to the axis.

また、この動力伝達軸2の軸端部2xにおける軸中央寄り位置(同図の右寄り位置)には、既述の内輪1の入口側チャンファ1cと同一の方向性及び同一の含軸断面形状を有する肩部2cが形成されている。この場合、肩部2cの中心軸に対する傾斜角度は、15度以上で且つ32.5度以下に設定されている(入口側チャンファ1cについても同様)。この肩部2cは、セレーション2aの軸中央側端部から軸中央側に離隔した位置に存在すると共に、同方向に離隔して形成された大径部2dの軸端側のテーパ部として形成されている。   Further, at the axial center position (rightward position in the figure) of the shaft end portion 2x of the power transmission shaft 2, the same directionality and the same shaft-containing cross-sectional shape as the inlet chamfer 1c of the inner ring 1 described above are provided. A shoulder 2c is formed. In this case, the inclination angle of the shoulder 2c with respect to the central axis is set to 15 degrees or more and 32.5 degrees or less (the same applies to the entrance-side chamfer 1c). The shoulder portion 2c is formed as a taper portion on the shaft end side of the large diameter portion 2d formed at a position separated from the shaft center side end portion of the serration 2a toward the shaft center side and separated in the same direction. ing.

そして、図1(a)に示すように、内輪1に動力伝達軸2の軸端部2xを組み付けた状態では、内輪1のセレーション1aと動力伝達軸2のセレーション2aとが嵌合することにより、両者1、2の周方向相対移動が規制されている。更に、動力伝達軸2の周溝2bに装着した丸サークリップ3に内輪1の内部側チャンファ1bが当接し、且つ動力伝達軸2に形成された肩部2cに内輪1の入口側チャンファ1cが当接することにより、両者1、2の軸方向相対移動が規制されている。   As shown in FIG. 1 (a), in a state where the shaft end 2x of the power transmission shaft 2 is assembled to the inner ring 1, the serration 1a of the inner ring 1 and the serration 2a of the power transmission shaft 2 are fitted together. The relative movement in the circumferential direction of both 1 and 2 is restricted. Further, the inner chamfer 1b of the inner ring 1 abuts on the circular circlip 3 attached to the circumferential groove 2b of the power transmission shaft 2, and the inlet chamfer 1c of the inner ring 1 is in contact with the shoulder 2c formed on the power transmission shaft 2. By abutting, the relative movement in the axial direction of both 1 and 2 is restricted.

この状態の下では、内輪1の熱処理後に内部側チャンファ1bと入口側チャンファ1cとが焼入れ鋼切削加工されているので、既述の図8(a)に示す内輪1の内部側チャンファ1bにおける丸サークリップ3との当接基準位置1boから入口側チャンファ1cにおける肩部2cとの当接基準位置1coまでの寸法L1と、同図(b)に示す動力伝達軸2の周溝2bにおける丸サークリップ3との当接基準位置2boから肩部2cにおける入口側チャンファ1cとの当接基準位置2coまでの寸法L2とが適正に合致する。これにより、内輪1の入口側チャンファ1cが、動力伝達軸2の肩部2cに当接した状態で、図1(b)に示すように、内輪1の内部側チャンファ1bが、動力伝達軸2の周溝2bに装着された丸サークリップ3に適正に当接する。なお、丸サークリップ3には、内部側チャンファ1bの一方の直線部1baが当接するのみならず他方の直線部1bbも当接もしくは略当接した状態となる。以上の結果、内輪1の動力伝達軸2に対する軸方向のガタツキが可及的に抑制される。   Under this state, since the inner chamfer 1b and the inlet chamfer 1c are cut by quenching steel after the heat treatment of the inner ring 1, the rounds in the inner chamfer 1b of the inner ring 1 shown in FIG. The dimension L1 from the contact reference position 1bo with the circlip 3 to the contact reference position 1co with the shoulder 2c of the inlet chamfer 1c, and the round sir in the circumferential groove 2b of the power transmission shaft 2 shown in FIG. The dimension L2 from the contact reference position 2bo with the clip 3 to the contact reference position 2co with the inlet chamfer 1c at the shoulder 2c properly matches. As a result, in the state where the inlet chamfer 1c of the inner ring 1 is in contact with the shoulder 2c of the power transmission shaft 2, the inner chamfer 1b of the inner ring 1 is connected to the power transmission shaft 2 as shown in FIG. It properly contacts the circular circlip 3 attached to the circumferential groove 2b. The circular circlip 3 is not only in contact with one linear portion 1ba of the inner chamfer 1b but also in contact with or substantially in contact with the other linear portion 1bb. As a result, the backlash in the axial direction of the inner ring 1 with respect to the power transmission shaft 2 is suppressed as much as possible.

図3は、本発明の第2実施形態に係る等速自在継手の内輪1を例示し、この内輪1は、DOJ(ダブルオフセット型ジョイント)に使用されるものである。この内輪1の軸端側の面1dは、軸直角平面と平行な面であり、この軸端側の面1dが、内輪1の軸端側の当接部とされている。すなわち、動力伝達軸2の軸端部2xの軸端寄り位置には、断面が四角形のスナップリングが装着される周溝が形成されており、この周溝に装着されたスナップリングの軸中央側の面が、内輪1の軸端側の面1dに当接するように構成されている。また、この内輪1の軸中央側の面1eには、直線状のテーパ部からなるチャンファ1eaが形成され、このチャンファ1eaが、動力伝達軸2の軸端部2の軸中央寄り位置に形成された肩部2cに当接するように構成されている。したがって、この内輪1は、軸端側の面1dとチャンファ1eaとが、熱処理後に焼入れ鋼切削加工されている。   FIG. 3 illustrates an inner ring 1 of a constant velocity universal joint according to a second embodiment of the present invention, and this inner ring 1 is used for a DOJ (double offset joint). A surface 1 d on the shaft end side of the inner ring 1 is a surface parallel to a plane perpendicular to the axis, and the surface 1 d on the shaft end side is a contact portion on the shaft end side of the inner ring 1. That is, a circumferential groove to which a snap ring having a square cross section is attached is formed at a position near the shaft end of the shaft end portion 2x of the power transmission shaft 2, and the shaft center side of the snap ring attached to the circumferential groove is formed. This surface is configured to abut on the surface 1d on the shaft end side of the inner ring 1. Further, a chamfer 1ea made of a linear taper portion is formed on the surface 1e on the shaft center side of the inner ring 1, and this chamfer 1ea is formed at a position near the shaft center of the shaft end portion 2 of the power transmission shaft 2. It is comprised so that it may contact | abut to the shoulder part 2c. Therefore, in the inner ring 1, the shaft end side surface 1d and the chamfer 1ea are hardened steel cut after heat treatment.

図4は、本発明の第3実施形態に係る等速自在継手の内輪1を例示し、この内輪1は、LJ(クロスグルーブ型ジョイント)に使用されるものである。上述の第2実施形態と同様に、この内輪1の軸端側の面1dが、動力伝達軸2の周溝に装着されたスナップリングの軸中央側の面に当接し、内輪1の軸中央側の面1eに形成されたチャンファ1eaが、動力伝達軸2の肩部2cに当接するように構成されている。更に、この内輪1も、軸端側の面1dとチャンファ1eaとが、熱処理後に焼入れ鋼切削加工されている。   FIG. 4 illustrates an inner ring 1 of a constant velocity universal joint according to a third embodiment of the present invention, and the inner ring 1 is used for an LJ (cross-groove joint). As in the second embodiment described above, the surface 1d on the shaft end side of the inner ring 1 abuts on the surface on the shaft center side of the snap ring mounted on the circumferential groove of the power transmission shaft 2, and the shaft center of the inner ring 1 is A chamfer 1ea formed on the side surface 1e is configured to contact the shoulder 2c of the power transmission shaft 2. Further, in this inner ring 1, the shaft end side surface 1d and the chamfer 1ea are also hardened steel cut after heat treatment.

図5は、本発明の第4実施形態に係る等速自在継手の内輪1を例示し、この内輪1は、TJ(トリポード型ジョイント)に使用されるものである。この内輪1の軸端側の面1fは、軸直角平面と平行な面であり、この軸端側の面1fが、動力伝達軸2の周溝に装着されたスナップリングの軸中央側の面に当接し、内輪1の軸中央側の面1gに形成されたチャンファ1gaが、動力伝達軸2の肩部2cに当接するように構成されている。したがって、この内輪1は、軸端側の面1fとチャンファ1gaとが、熱処理後に焼入れ鋼切削加工されている。   FIG. 5 illustrates an inner ring 1 of a constant velocity universal joint according to a fourth embodiment of the present invention, and this inner ring 1 is used for a TJ (tripod type joint). The shaft end side surface 1 f of the inner ring 1 is a surface parallel to the plane perpendicular to the axis, and the shaft end side surface 1 f is a surface on the shaft center side of the snap ring mounted in the circumferential groove of the power transmission shaft 2. The chamfer 1ga formed on the surface 1g on the shaft center side of the inner ring 1 is configured to contact the shoulder 2c of the power transmission shaft 2. Therefore, in the inner ring 1, the shaft end side surface 1f and the chamfer 1ga are hardened steel cut after heat treatment.

なお、以上の実施形態では、内輪1についてのみ熱処理後に加工(焼入れ鋼切削加工)したものを例示したが、これに加えて、動力伝達軸2についても同様に材質が鋼であり、高周波熱処理または浸炭熱処理等の熱処理を施した後に、周溝2b及び肩部2cに例示されるように動力伝達軸2における内輪1の軸方向位置決めに必要な箇所を加工(焼入れ鋼切削加工)したものであってもよい。   In the above embodiment, only the inner ring 1 was processed after heat treatment (quenched steel cutting), but in addition to this, the power transmission shaft 2 is also made of steel and is subjected to high-frequency heat treatment or After heat treatment such as carburizing heat treatment, a portion necessary for axial positioning of the inner ring 1 in the power transmission shaft 2 is processed (quenched steel cutting) as illustrated in the circumferential groove 2b and the shoulder 2c. May be.

図1(a)は、本発明の第1実施形態に係る等速自在継手の内輪と動力伝達軸とを組み付けてなるシャフトアッセンブリを示す概略縦断側面図、図1(b)は、その要部を示す拡大縦断側面図である。FIG. 1A is a schematic longitudinal side view showing a shaft assembly in which an inner ring and a power transmission shaft of a constant velocity universal joint according to a first embodiment of the present invention are assembled, and FIG. FIG. 図2(a)は、前記シャフトアッセンブリの内輪を示す概略縦断側面図、図2(b)は、前記シャフトアッセンブリの動力伝達軸を示す概略側面図である。2A is a schematic longitudinal side view showing an inner ring of the shaft assembly, and FIG. 2B is a schematic side view showing a power transmission shaft of the shaft assembly. 本発明の第2実施形態に係る等速自在継手の内輪を示す概略縦断側面図である。It is a schematic longitudinal side view which shows the inner ring | wheel of the constant velocity universal joint which concerns on 2nd Embodiment of this invention. 本発明の第3実施形態に係る等速自在継手の内輪を示す概略縦断側面図である。It is a schematic longitudinal side view which shows the inner ring | wheel of the constant velocity universal joint which concerns on 3rd Embodiment of this invention. 本発明の第4実施形態に係る等速自在継手の内輪を示す概略縦断側面図である。It is a schematic longitudinal side view which shows the inner ring | wheel of the constant velocity universal joint which concerns on 4th Embodiment of this invention. 図6(a)は、従来の等速自在継手の内輪と動力伝達軸とを組み付けてなるシャフトアッセンブリを示す概略縦断側面図、図6(b)は、その要部を示す拡大縦断側面図である。FIG. 6A is a schematic longitudinal side view showing a shaft assembly in which an inner ring and a power transmission shaft of a conventional constant velocity universal joint are assembled, and FIG. 6B is an enlarged longitudinal side view showing an essential part thereof. is there. 図7(a)は、従来の問題点を説明するための等速自在継手の内輪の概略縦断側面図、図7(b)は、従来の問題点を説明するための動力伝達軸の概略側面図である。FIG. 7A is a schematic longitudinal side view of the inner ring of the constant velocity universal joint for explaining the conventional problems, and FIG. 7B is a schematic side view of the power transmission shaft for explaining the conventional problems. FIG.

符号の説明Explanation of symbols

1 内輪
1a 歯型(セレーションまたはスプライン)
1b 内部側チャンファ(内輪の抜け止め部材に対する当接部)
1c 入口側チャンファ(内輪の肩部に対する当接部)
1d 内輪の軸端側の面(内輪の抜け止め部材に対する当接部)
1ea チャンファ(内輪の肩部に対する当接部)
1f 内輪の軸端側の面(内輪の抜け止め部材に対する当接部)
1ga チャンファ(内輪の肩部に対する当接部)
2 動力伝達軸
2a 歯型(セレーションまたはスプライン)
2b 周溝
2c 肩部
3 丸サークリップ(抜け止め部材)
1 Inner ring 1a Tooth type (serration or spline)
1b Internal chamfer (contact portion of inner ring against retaining member)
1c Inlet chamfer (contact part against the shoulder of the inner ring)
1d Shaft end side surface of inner ring (contact portion of inner ring against retaining member)
1ea chamfa (contact part against the shoulder of the inner ring)
1f Shaft end side surface of inner ring (contact portion of inner ring against retaining member)
1ga chamfa (contact part against the shoulder of the inner ring)
2 Power transmission shaft 2a Tooth type (serration or spline)
2b Circumferential groove 2c Shoulder 3 Round circlip (Retaining member)

Claims (9)

動力伝達軸の軸端部が周方向移動を規制されて内周側に嵌合される内輪を備えると共に、前記動力伝達軸の軸端部の軸端寄り位置に装着された抜け止め部材に、前記内輪の軸端側部位が当接可能とされ、且つ前記動力伝達軸の軸端部の軸中央寄り位置に配設された肩部に、前記内輪の軸中央側部位が当接可能とされた等速自在継手において、
前記内輪の抜け止め部材に対する当接部と、前記内輪の肩部に対する当接部との少なくとも一方が、熱処理後における加工により形成されていることを特徴とする等速自在継手。
A shaft end portion of the power transmission shaft is provided with an inner ring that is restricted from moving in the circumferential direction and fitted to the inner peripheral side, and a retaining member attached to a position near the shaft end of the shaft end portion of the power transmission shaft, The shaft end side portion of the inner ring can come into contact, and the shaft center side portion of the inner ring can come into contact with a shoulder portion disposed near the shaft center of the shaft end portion of the power transmission shaft. In a constant velocity universal joint,
A constant velocity universal joint, wherein at least one of a contact portion with respect to a retaining member of the inner ring and a contact portion with respect to a shoulder portion of the inner ring is formed by processing after heat treatment.
前記内輪の内周面に、前記動力伝達軸の軸端部の外周面に形成されたセレーション又はスプライン状の歯型に嵌合可能なセレーション又はスプライン状の歯型が形成されると共に、前記内輪の継手内部側に位置する内部側チャンファに、前記抜け止め部材が当接可能とされ、且つ、前記内輪の継手入口側に位置する入口側チャンファに、前記肩部が当接可能とされていることを特徴とする請求項1に記載の等速自在継手。 On the inner peripheral surface of the inner ring, there is formed a serration or spline-shaped tooth mold that can be fitted to a serration or spline-shaped tooth mold formed on the outer peripheral surface of the shaft end portion of the power transmission shaft, and the inner ring The retaining member can be brought into contact with the inner chamfer located on the inner side of the joint, and the shoulder portion can be brought into contact with the inlet chamfer located on the joint inlet side of the inner ring. The constant velocity universal joint according to claim 1. 前記内輪の材質が鋼であり、前記熱処理が、高周波熱処理または浸炭熱処理であることを特徴とする請求項1または2に記載の等速自在継手。 The constant velocity universal joint according to claim 1 or 2, wherein the material of the inner ring is steel, and the heat treatment is an induction heat treatment or a carburizing heat treatment. 前記熱処理後の加工が、焼入れ鋼切削加工であることを特徴とする請求項1〜3の何れかに記載の等速自在継手。 The constant velocity universal joint according to claim 1, wherein the processing after the heat treatment is a hardened steel cutting. 前記抜け止め部材が、丸サークリップであることを特徴とする請求項1〜4の何れかに記載の等速自在継手。 The constant velocity universal joint according to any one of claims 1 to 4, wherein the retaining member is a circular circlip. 前記抜け止め部材が、スナップリングであることを特徴とする請求項1〜4の何れかに記載の等速自在継手。 The constant velocity universal joint according to any one of claims 1 to 4, wherein the retaining member is a snap ring. 等速自在継手の内輪の内周面と動力伝達軸の軸端部の外周面とを周方向移動を規制して嵌合させると共に、前記動力伝達軸の軸端部の軸端寄り位置に周溝を形成して、該周溝に装着された抜け止め部材に、前記内輪の軸端側部位を当接させ、且つ前記動力伝達軸の軸端部の軸中央寄り位置に配設した肩部に、前記内輪の軸中央側部位を当接させて、前記内輪の動力伝達軸に対する軸方向移動を規制するように構成したシャフトアッセンブリにおいて、
前記内輪の抜け止め部材に対する当接部と、前記内輪の肩部に対する当接部との少なくとも一方が、熱処理後における加工により形成されていることを特徴とするシャフトアッセンブリ。
The inner peripheral surface of the inner ring of the constant velocity universal joint and the outer peripheral surface of the shaft end portion of the power transmission shaft are fitted to each other while restricting the movement in the circumferential direction. A shoulder formed in a position near the shaft center of the shaft end portion of the power transmission shaft, with a groove formed so that the shaft end side portion of the inner ring is brought into contact with a retaining member attached to the circumferential groove In the shaft assembly configured to abut the central portion of the inner ring on the shaft central side to restrict axial movement of the inner ring with respect to the power transmission shaft,
The shaft assembly is characterized in that at least one of a contact portion with respect to a retaining member of the inner ring and a contact portion with respect to a shoulder portion of the inner ring is formed by processing after heat treatment.
前記等速自在継手の内輪の内周面に形成されたセレーションまたはスプライン状の歯型と、前記動力伝達軸の軸端部の外周面に形成されたセレーションまたはスプライン状の歯型とを嵌合させると共に、前記動力伝達軸の周溝に装着された抜け止め部材に、前記内輪の継手内部側に位置する内部側チャンファが当接し、且つ、前記動力伝達軸の肩部に、前記内輪の継手入口側に位置する入口側チャンファが当接していることを特徴とする請求項7に記載のシャフトアッセンブリ。 The serration or spline-shaped tooth mold formed on the inner peripheral surface of the inner ring of the constant velocity universal joint and the serration or spline-shaped tooth mold formed on the outer peripheral surface of the shaft end of the power transmission shaft are fitted together. And an inner chamfer located on the inner side of the joint of the inner ring abuts against a retaining member mounted in a circumferential groove of the power transmission shaft, and a joint of the inner ring contacts a shoulder of the power transmission shaft. The shaft assembly according to claim 7, wherein an inlet chamfer located on the inlet side abuts. ドライブシャフトアッセンブリまたはプロペラシャフトアッセンブリに使用されることを特徴とする請求項7または8に記載のシャフトアッセンブリ。 The shaft assembly according to claim 7 or 8, wherein the shaft assembly is used for a drive shaft assembly or a propeller shaft assembly.
JP2008025472A 2008-02-05 2008-02-05 Constant speed universal joint and shaft assembly Pending JP2009185878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008025472A JP2009185878A (en) 2008-02-05 2008-02-05 Constant speed universal joint and shaft assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008025472A JP2009185878A (en) 2008-02-05 2008-02-05 Constant speed universal joint and shaft assembly

Publications (1)

Publication Number Publication Date
JP2009185878A true JP2009185878A (en) 2009-08-20

Family

ID=41069328

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008025472A Pending JP2009185878A (en) 2008-02-05 2008-02-05 Constant speed universal joint and shaft assembly

Country Status (1)

Country Link
JP (1) JP2009185878A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012022308A1 (en) 2012-11-14 2014-05-15 Volkswagen Aktiengesellschaft Shaft-hub-connection of constant velocity joint, has shaft provided with annular groove whose width in axial direction is greater than width of retaining ring and depth is set, such that retaining ring is retracted into groove

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3188001B2 (en) * 1992-12-25 2001-07-16 エヌティエヌ株式会社 Fitting structure between inner ring and shaft of constant velocity universal joint
JP2002200902A (en) * 2000-05-31 2002-07-16 Nsk Ltd Unit for driving wheel and manufacturing method therefor
JP2006226412A (en) * 2005-02-17 2006-08-31 Ntn Corp Constant velocity universal joint, cage for constant velocity universal joint and its manufacturing method
JP2006329320A (en) * 2005-05-26 2006-12-07 Ntn Corp Wheel bearing device
JP2007162954A (en) * 2007-03-16 2007-06-28 Ntn Corp Constant velocity universal joint
JP2007162874A (en) * 2005-12-15 2007-06-28 Ntn Corp Constant velocity universal joint and its internal member
JP2008002625A (en) * 2006-06-23 2008-01-10 Ntn Corp Constant velocity universal joint, drive shaft using it, and bearing unit for drive wheel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3188001B2 (en) * 1992-12-25 2001-07-16 エヌティエヌ株式会社 Fitting structure between inner ring and shaft of constant velocity universal joint
JP2002200902A (en) * 2000-05-31 2002-07-16 Nsk Ltd Unit for driving wheel and manufacturing method therefor
JP2006226412A (en) * 2005-02-17 2006-08-31 Ntn Corp Constant velocity universal joint, cage for constant velocity universal joint and its manufacturing method
JP2006329320A (en) * 2005-05-26 2006-12-07 Ntn Corp Wheel bearing device
JP2007162874A (en) * 2005-12-15 2007-06-28 Ntn Corp Constant velocity universal joint and its internal member
JP2008002625A (en) * 2006-06-23 2008-01-10 Ntn Corp Constant velocity universal joint, drive shaft using it, and bearing unit for drive wheel
JP2007162954A (en) * 2007-03-16 2007-06-28 Ntn Corp Constant velocity universal joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012022308A1 (en) 2012-11-14 2014-05-15 Volkswagen Aktiengesellschaft Shaft-hub-connection of constant velocity joint, has shaft provided with annular groove whose width in axial direction is greater than width of retaining ring and depth is set, such that retaining ring is retracted into groove
DE102012022308B4 (en) 2012-11-14 2023-03-23 Volkswagen Aktiengesellschaft Shaft-hub connection with detachable axial lock

Similar Documents

Publication Publication Date Title
JP2007032760A (en) Constant velocity universal joint and its inside member
WO2011114505A1 (en) Tripod constant velocity universal joint
JP2009180315A (en) Power transmitting shaft and shaft assembly
JP2009121673A (en) Constant speed universal joint
JP5355876B2 (en) Constant velocity universal joint
JP2009185878A (en) Constant speed universal joint and shaft assembly
JP5410163B2 (en) Drive shaft and drive shaft assembly method
JP2010043691A (en) Constant velocity universal joint and method for manufacturing the same
JP2005180641A (en) Constant velocity universal joint and method of manufacturing outer ring of constant velocity universal joint
EP2251559B1 (en) Inner joint member for constant velocity universal joint, method of producing the same, and constant velocity universal joint
JP2003049861A (en) Cage of fixed constant velocity universal joint and its manufacturing method and fixed constant velocity universal joint
JP2007211926A (en) Inner member of constant velocity universal joint and its manufacturing method
JP2011185346A (en) Constant velocity universal joint
JP2013044349A (en) Constant velocity universal joint
JP2009275878A (en) Spline shaft, power transmission shaft, and outer ring of constant velocity universal joint
JP6532793B2 (en) Tripod type constant velocity universal joint
JP4795271B2 (en) Cage for constant velocity universal joint and assembly method thereof
JP5372364B2 (en) Tripod type constant velocity universal joint
JP2007170423A (en) Constant velocity universal joint and its inner member
KR102274744B1 (en) Heat treatment method for tubular shaft for drive shaft having ball spline structure and tubular shaft manufactured by the same
JP2009191901A (en) Cage of constant speed universal joint, propeller shaft assembly, and drive shaft assembly
JP5085465B2 (en) Tripod type constant velocity universal joint
JP4813286B2 (en) Outer joint member for constant velocity universal joint
JP2009250266A (en) Tripod type constant velocity universal joint
JP2007162874A (en) Constant velocity universal joint and its internal member

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110126

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120113

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120118

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120222

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120817