JP2009074594A - Sliding type constant velocity universal joint - Google Patents

Sliding type constant velocity universal joint Download PDF

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Publication number
JP2009074594A
JP2009074594A JP2007242847A JP2007242847A JP2009074594A JP 2009074594 A JP2009074594 A JP 2009074594A JP 2007242847 A JP2007242847 A JP 2007242847A JP 2007242847 A JP2007242847 A JP 2007242847A JP 2009074594 A JP2009074594 A JP 2009074594A
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Prior art keywords
joint member
ring
constant velocity
velocity universal
shaft
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JP2007242847A
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Japanese (ja)
Inventor
Chikaya Shinba
千佳也 榛葉
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2007242847A priority Critical patent/JP2009074594A/en
Priority to PCT/JP2008/064713 priority patent/WO2009037936A1/en
Publication of JP2009074594A publication Critical patent/JP2009074594A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/226—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
    • F16D3/227—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22313—Details of the inner part of the core or means for attachment of the core on the shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)
  • Automatic Assembly (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding type constant velocity universal joint having good assembling workability, without increasing joint weight and degrading the durability of an inner ring. <P>SOLUTION: In a cage 5, an axial center A of a spherical inner peripheral surface 18 is on a deeper side than an axial center B of a spherical inner outer peripheral surface 19. When a shaft 9 is pressed in a shaft hole 21 of the inner ring 3, a deep side end surface 15 of the inner ring 3 and an inner bottom surface 16 of an outer ring 2 can abut on each other by surface contact. A surface contact part 25 abutting on the inner bottom surface 16 of the outer ring 2 on the deep side end surface 15 of the inner ring 3 is made to be a tapered surface tilted by α° to an inner ring center side in a diametrical direction. On the inner bottom surface 16 of the outer ring 2, the surface contact part 26 abutting on the deep side end surface 15 of the inner ring 2 is made to be a tapered surface having a shape coinciding with the surface contact part 25 of the outer ring 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、自動車の駆動軸や各種産業機械に用いられる摺動式等速自在継手に関するものである。   The present invention relates to a sliding type constant velocity universal joint used for a drive shaft of an automobile and various industrial machines.

摺動型等速自在継手は、角度変位および軸方向変位（プランジング）が可能な等速自在継手であり、自動車では、エンジンからの動力を車輪に伝達するドライブシャフトに利用され、ＦＲ車（前方にエンジンが配置され、後輪が駆動する車）や４ＷＤ車においては、変速機からディファレンシャルまでを連結するプロペラシャフトにも利用される。   The sliding type constant velocity universal joint is a constant velocity universal joint capable of angular displacement and axial displacement (plunging). In an automobile, it is used for a drive shaft that transmits power from an engine to a wheel. In a vehicle in which an engine is disposed in the front and the rear wheels are driven) and a 4WD vehicle, it is also used for a propeller shaft that connects a transmission to a differential.

図１３に摺動型等速自在継手の一つであるダブルオフセット型等速自在継手の従来例を示す。   FIG. 13 shows a conventional example of a double offset type constant velocity universal joint which is one of sliding type constant velocity universal joints.

この等速自在継手１０１は、摺動型等速自在継手の一つであるダブルオフセット型等速自在継手（ＤＯＪ）であり、一端に開口部を有する有底円筒状の外輪１０２、内輪１０３、ボール１０４、ケージ１０５を主要部とし、外輪１０２の内部には、内輪１０３、ボール１０４、ケージ１０５で構成され、外輪１０２に対して相対動作する軸方向移動可能な内部部品１０６が収容配置されている。   This constant velocity universal joint 101 is a double offset type constant velocity universal joint (DOJ) which is one of sliding type constant velocity universal joints, and has a bottomed cylindrical outer ring 102 having an opening at one end, an inner ring 103, The ball 104 and the cage 105 are the main parts, and the inner ring 103, the ball 104, and the cage 105, which are configured to move relative to the outer ring 102, are accommodated in the outer ring 102. Yes.

外輪１０２は一端に開口部を有する有底筒状で、その円筒状の内周面には、複数の直線状のトラック溝１０７が形成されている。内輪１０３の球状外周面には、外輪１０２のトラック溝１０７と対向する複数の直線状のトラック溝１０８が形成されている。外輪１０２のトラック溝１０７と内輪１０３のトラック溝１０８との間には、複数のボール１０４が介在され、これらのボール１０４は、ケージ１０５のポケット１２０で保持されている。   The outer ring 102 has a bottomed cylindrical shape having an opening at one end, and a plurality of linear track grooves 107 are formed on the inner peripheral surface of the cylindrical shape. A plurality of linear track grooves 108 facing the track grooves 107 of the outer ring 102 are formed on the spherical outer peripheral surface of the inner ring 103. A plurality of balls 104 are interposed between the track grooves 107 of the outer ring 102 and the track grooves 108 of the inner ring 103, and these balls 104 are held in the pockets 120 of the cage 105.

ケージ１０５は、外輪１０２の内周面と摺接する球状外周面１１８と、内輪１０３の外周面と摺接する球状内周面１１７とを有する。また、球状外周面１１８の軸方向中心Ｂは、球状内周面１１７の軸方向中心Ａよりも外輪１０２における反開口部側（以下奥側とする）とされており、内輪１０３の軸方向中心はケージ１０５の球状内周面１１７における中心Ａと一致している。この場合、ケージ１０５の奥側端面１１９から内輪１０３の軸方向中心Ａまでの軸方向距離Ｄが、ケージ１０５の外輪開口部側端面から内輪１０３の軸方向中心Ａまでの軸方向距離Ｃよりも長くなるため、この図１３に示すように、内輪１０３をケージ１０５の内周面１１７に球面嵌合させた際、内輪１０３の奥側端面１１５がケージ１０５の奥側端面１１９よりも奥側に突出することがない。   The cage 105 has a spherical outer peripheral surface 118 that is in sliding contact with the inner peripheral surface of the outer ring 102, and a spherical inner peripheral surface 117 that is in sliding contact with the outer peripheral surface of the inner ring 103. Further, the axial center B of the spherical outer peripheral surface 118 is on the side opposite to the opening of the outer ring 102 (hereinafter referred to as the back side) relative to the axial center A of the spherical inner peripheral surface 117. Is coincident with the center A of the spherical inner circumferential surface 117 of the cage 105. In this case, the axial distance D from the rear end surface 119 of the cage 105 to the axial center A of the inner ring 103 is larger than the axial distance C from the outer ring opening side end surface of the cage 105 to the axial center A of the inner ring 103. Therefore, as shown in FIG. 13, when the inner ring 103 is spherically fitted to the inner peripheral surface 117 of the cage 105, the inner end surface 115 of the inner ring 103 is located on the inner side of the inner end surface 119 of the cage 105. It does not protrude.

内輪１０３は中心に中心孔１２１を有し、この中心孔１２１には軸部材であるシャフト１０９がスプライン挿嵌され、さらに、このシャフト１０９は内輪１０３の奥側でスナップリング１１０により抜け止めされている。   The inner ring 103 has a center hole 121 at the center, and a shaft 109 as a shaft member is inserted into the center hole 121 by a spline. Further, the shaft 109 is prevented from coming off by a snap ring 110 at the back side of the inner ring 103. Yes.

外輪１０２の開口端部１２２の内周面には環状の凹溝１１３が形成され、この凹溝１１３には環状のサークリップ１１１が嵌合されている。このサークリップ１１１は、内部部品１０６が開口部側へ軸方向移動した際、この軸方向移動を規制し、内部部品１０６が外輪１０２の内部から外部へ抜け出るのを防止する。   An annular groove 113 is formed on the inner peripheral surface of the open end 122 of the outer ring 102, and an annular circlip 111 is fitted in the groove 113. The circlip 111 restricts this axial movement when the internal part 106 moves in the axial direction toward the opening, and prevents the internal part 106 from slipping out of the outer ring 102 to the outside.

さて、図１３に示す等速自在継手１０１（継手総アッシー）の組立ては、カセットである内部部品１０６（内輪１０３、ボール１０４、ケージ１０５）を構成する内輪１０３にシャフト１０９を圧入により挿嵌し、このシャフト１０９を挿嵌した内部部品１０６を外輪１０２の内部に組み込み、その後、外輪１０２の凹溝１１３にサークリップ１１１を嵌合して内部部品１０６の抜け止めすることにより行う。この理由について以下に説明する。   Now, the constant velocity universal joint 101 (joint total assembly) shown in FIG. 13 is assembled by inserting the shaft 109 into the inner ring 103 constituting the internal component 106 (inner ring 103, ball 104, cage 105) as a cassette by press fitting. Then, the internal part 106 into which the shaft 109 is inserted is incorporated into the outer ring 102, and then the circlip 111 is fitted into the concave groove 113 of the outer ring 102 to prevent the internal part 106 from coming off. The reason for this will be described below.

上記の継手総アッシーの組立て手段と異なり、継手総アッシーの組立てを、図１４に示すように、まず、カセットである内部部品１０６を外輪１０２の内部に組み込んで継手サブアッシーを組立て、その後、内部部品１０６を構成する内輪１０３にシャフト１０９を圧入して挿嵌することにより行う場合、この圧入作業はケージ１０５の奥側端面１１９を外輪１０２の内底面１１６に当接させて行うことになる。この場合、上述した圧入作業時の荷重は、内輪１０３と、内輪１０３と球面嵌合しているケージ１０５とが受けることになるため、ケージ１０５に過大な荷重が加わって、その耐久性を低下させてしまうおそれがある。   Unlike the assembly means of the joint total assembly described above, as shown in FIG. 14, the assembly of the joint total assembly is first performed by assembling the inner part 106, which is a cassette, into the outer ring 102, and then assembling the joint sub assembly. When the shaft 109 is press-fitted into and inserted into the inner ring 103 constituting the component 106, this press-fitting operation is performed with the rear end surface 119 of the cage 105 abutting against the inner bottom surface 116 of the outer ring 102. In this case, since the load during the press-fitting operation described above is received by the inner ring 103 and the cage 105 that is spherically fitted to the inner ring 103, an excessive load is applied to the cage 105 and the durability thereof is reduced. There is a risk of letting you.

しかし、上述した図１３に示す継手総アッシーの組立て方法であると、例えば、継手サブアッシーの製造メーカーと継手総アッシーの製造メーカーとが異なる場合など、継手サブアッシーを一旦組み立てる必要がある場合に、内輪１０３へのシャフト１０９の挿嵌は、組立てた継手サブアッシーを外輪１０２と内部部品１０６に分解した後に行う必要がある。このため、継手総アッシーの組立て時における作業性が低下する問題があった。また、上述したように、継手サブアッシーを分解すると、分解した外輪１０２と内部部品１０６の部品管理を行う必要が製造工程上で発生するため、この点も継手総アッシーを組み立てる際の作業性が低下する要因となっていた。   However, in the above-described method for assembling the joint subassembly shown in FIG. 13, for example, when it is necessary to assemble the joint subassembly once, for example, when the manufacturer of the joint subassembly is different from the manufacturer of the joint total assembly. It is necessary to insert the shaft 109 into the inner ring 103 after disassembling the assembled joint sub-assembly into the outer ring 102 and the inner part 106. For this reason, there existed a problem that workability | operativity at the time of the assembly of the joint total assembly fell. Further, as described above, when the joint subassembly is disassembled, it is necessary to manage parts of the disassembled outer ring 102 and the internal part 106 in the manufacturing process, so this is also the workability when assembling the joint total assembly. It was a factor of decline.

上記した摺動型等速自在継手の課題を解決する手段として、内輪の奥側端部を軸方向に延長することにより、継手サブアッシーにシャフトを圧入した際、ケージの奥側端面が外輪の内底面に当接する前に、内輪の奥側端面が外輪の内底面に当接するようにした技術が本出願人により考案されている（特許文献１参照）。
特開２００３−５６５９０号公報 As a means to solve the above-mentioned problem of the sliding type constant velocity universal joint, when the shaft is press-fitted into the joint subassembly by extending the inner end of the inner ring in the axial direction, the inner end of the cage is A technique has been devised by the present applicant so that the inner end surface of the inner ring contacts the inner bottom surface of the outer ring before contacting the inner bottom surface (see Patent Document 1).
JP 2003-56590 A

さて、特許文献１に記載の摺動型等速自在継手であれば、継手サブアッシーの状態で内輪にシャフトを圧入して挿嵌する際、その圧入作業時は、ケージの奥側端面ではなく、内輪の奥側端面を外輪の内底面に当接させて行うことができる。この場合、ケージに過大な荷重が加わることがないため、ケージの耐久性を低下させてしまうおそれがない。換言すれば、特許文献１に記載の技術によれば、継手サブアッシーの状態で内輪にシャフトを挿嵌して継手総アッシーを完成させることができるため、等速自在継手の組立て時の作業性を向上させることができる。   Now, in the case of the sliding type constant velocity universal joint described in Patent Document 1, when the shaft is press-fitted into the inner ring in the state of the joint sub-assembly, when the press-fitting operation is performed, not the rear end face of the cage. This can be performed by bringing the inner end surface of the inner ring into contact with the inner bottom surface of the outer ring. In this case, since an excessive load is not applied to the cage, there is no possibility of reducing the durability of the cage. In other words, according to the technique disclosed in Patent Document 1, since the joint total assembly can be completed by inserting the shaft into the inner ring in the state of the joint sub-assembly, workability at the time of assembling the constant velocity universal joint Can be improved.

しかし、前記した特許文献１に記載の等速自在継手には、内輪の軸方向幅が大きくなるため、等速自在継手の重量が大きくなるという課題があった。また、内輪に対してシャフトが傾いて挿し込まれた場合、内輪が外輪の内底面に対して点接触する場合が生じ、この場合には、内輪の固定状態が不安定となる。そのため、内輪にシャフトを圧入していく際、内輪が径方向や周方向にガタつくなどして、圧入作業が困難になるという課題があった。また、内輪が外輪の内底面に対して点接触すると、内輪には局部的に大きな荷重が加わることになるため、内輪の耐久性が低下するおそれがあった。   However, the constant velocity universal joint described in Patent Document 1 has a problem in that the weight of the constant velocity universal joint increases because the axial width of the inner ring increases. Further, when the shaft is inserted while being inclined with respect to the inner ring, the inner ring may make point contact with the inner bottom surface of the outer ring, and in this case, the fixed state of the inner ring becomes unstable. Therefore, when the shaft is press-fitted into the inner ring, there is a problem that the press-fitting operation becomes difficult due to the inner ring rattling in the radial direction and the circumferential direction. Further, when the inner ring makes point contact with the inner bottom surface of the outer ring, a large load is locally applied to the inner ring, which may reduce the durability of the inner ring.

本発明は上記の事情に鑑みてなされたものであり、組立て時の作業性が良い摺動型等速自在継手を、継手重量を大きくすることなく、かつ、内輪の耐久性を低下させることなく提供することを目的とする。   The present invention has been made in view of the above circumstances, and is a sliding type constant velocity universal joint with good workability during assembly without increasing the weight of the joint and without reducing the durability of the inner ring. The purpose is to provide.

上記の課題を解決するための本発明の摺動型等速自在継手の一つ目としては、一端に開口部を有する有底筒状をなし、内周面に複数のトラック溝が形成された外側継手部材と、外周面に前記外側継手部材のトラック溝と対向する複数のトラック溝が形成された軸方向移動可能な内側継手部材と、前記外側継手部材のトラック溝と前記内側継手部材のトラック溝との間に介在されたボールと、前記外側継手部材と前記内側継手部材との間に配置され、前記ボールを保持するケージとを備え、前記内側継手部材の軸孔に軸部材が挿嵌される摺動型等速自在継手であって、前記外側継手部材の内底面と、その外側継手部材の内底面に対向する前記内側継手部材の奥側端面とを前記軸部材の挿入時に面接触で当接可能にしたことを特徴とする。   As the first of the sliding type constant velocity universal joints of the present invention for solving the above problems, a bottomed cylindrical shape having an opening at one end is formed, and a plurality of track grooves are formed on the inner peripheral surface. An outer joint member, an axially movable inner joint member in which a plurality of track grooves facing the track grooves of the outer joint member are formed on the outer peripheral surface, the track groove of the outer joint member, and the track of the inner joint member A ball interposed between the groove, a cage disposed between the outer joint member and the inner joint member, and holding the ball, and the shaft member is inserted into the shaft hole of the inner joint member A sliding type constant velocity universal joint, wherein the inner bottom surface of the outer joint member and the inner end surface of the inner joint member facing the inner bottom surface of the outer joint member are in surface contact when the shaft member is inserted. It is characterized in that the contact can be made with.

ここで、軸部材の内側継手部材への挿嵌は、軸部材を内側継手部材の軸孔に挿入して圧入していくことにより行う。本発明の場合、内側継手部材の軸孔に軸部材を圧入する際、内側継手部材の奥側端面を外側継手部材の内底面に当接させることができるため、内側継手部材を固定して前記圧入作業を行うことができる。また、前記当接は面接触により可能となるため、内側継手部材の奥側端面と外側継手部材の内底面の接触状態を安定させることができ、かつ、内側継手部材に過大な荷重が加わることもない。   Here, the insertion of the shaft member into the inner joint member is performed by inserting the shaft member into the shaft hole of the inner joint member and press-fitting it. In the case of the present invention, when the shaft member is press-fitted into the shaft hole of the inner joint member, the inner side end surface of the inner joint member can be brought into contact with the inner bottom surface of the outer joint member. Press-in work can be performed. Further, since the contact can be made by surface contact, the contact state between the inner end surface of the inner joint member and the inner bottom surface of the outer joint member can be stabilized, and an excessive load is applied to the inner joint member. Nor.

上記の発明は、内側継手部材の奥側端面の面接触部位を外側継手部材の内底面の面接触部位と合致した形状とすることにより可能である。   Said invention is possible by making the surface contact site | part of the back | inner side end surface of an inner joint member into the shape matched with the surface contact site | part of the inner bottom face of an outer joint member.

この手段としては、外側継手部材の内底面の面接触部位と前記内側継手部材の奥側端面の面接触部位をテーパ面とするか、或は、外側継手部材の内底面の面接触部位と内側継手部材の奥側端面の面接触部位を曲面とすることで可能である。   As this means, the surface contact portion of the inner bottom surface of the outer joint member and the surface contact portion of the inner side end surface of the inner joint member are tapered surfaces, or the surface contact portion and the inner surface of the inner bottom surface of the outer joint member. This is possible by making the surface contact portion of the back end face of the joint member a curved surface.

外側継手部材の内底面の面接触部位と内側継手部材の奥側端面の面接触部位をテーパ面とする場合、互いのテーパ面の径方向に対する傾斜方向とその傾斜角度を等しくする必要がある。また、外側継手部材の内底面の面接触部位と内側継手部材の奥側端面の面接触部位を曲面とする場合、互いの曲面の曲率半径を等しくする必要がある。   When the surface contact portion of the inner bottom surface of the outer joint member and the surface contact portion of the inner side end surface of the inner joint member are tapered surfaces, it is necessary to equalize the inclination direction and the inclination angle with respect to the radial direction of each tapered surface. Moreover, when making the surface contact site | part of the inner bottom face of an outer joint member and the surface contact site | part of the inner side end surface of an inner joint member into a curved surface, it is necessary to make the curvature radius of each curved surface equal.

本発明の場合、外側継手部材の内底面に内側継手部材の奥側端面を当接させて軸部材を内側継手部材に圧入する際、外側継手部材の内底面に面接触で当接させた内側継手部材が径方向に動こうとしても、外側継手部材の内底面でテーパ面或は曲面とした面接触部位で規制されるため、内側継手部材が径方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手の組立てる際の作業性を向上させることができる。なお、上述した軸部材を内側継手部材に圧入する際の内側継手部材のガタつきは、内側継手部材の奥側端面と外側継手部材の内底面とをテーパ面とする場合に効果的に抑えることができる。この理由は、内側継手部材の奥側端面と外側継手部材の内底面とをテーパ面とする場合は、外側継手部材の内底面に面接触で当接させた内側継手部材が径方向だけでなく周方向に動こうとしても、外側継手部材の内底面でテーパ面とした面接触部位で規制されて、内側継手部材が径方向および周方向にガタつくのを抑えることができるためである。   In the case of the present invention, when the inner end surface of the inner joint member is brought into contact with the inner bottom surface of the outer joint member and the shaft member is press-fitted into the inner joint member, the inner surface brought into contact with the inner bottom surface of the outer joint member by surface contact. Even if the joint member tries to move in the radial direction, the inner joint member can be prevented from rattling in the radial direction because the inner bottom surface of the outer joint member is restricted by a surface contact portion that is tapered or curved. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved. The backlash of the inner joint member when the shaft member described above is press-fitted into the inner joint member is effectively suppressed when the back end face of the inner joint member and the inner bottom surface of the outer joint member are tapered surfaces. Can do. The reason for this is that when the inner end surface of the inner joint member and the inner bottom surface of the outer joint member are tapered surfaces, the inner joint member brought into contact with the inner bottom surface of the outer joint member by surface contact is not only in the radial direction. This is because even if it tries to move in the circumferential direction, the inner joint member is restricted by the surface contact portion that is a tapered surface on the inner bottom surface of the outer joint member, and the inner joint member can be prevented from rattling in the radial direction and the circumferential direction.

上記の課題を解決するための本発明の摺動型等速自在継手の二つ目としては、一端に開口部を有する有底筒状をなし、内周面に複数のトラック溝が形成された外側継手部材と、外周面に前記外側継手部材のトラック溝と対向する複数のトラック溝が形成された軸方向移動可能な内側継手部材と、前記外側継手部材のトラック溝と前記内側継手部材のトラック溝との間に介在されたボールと、前記外側継手部材と前記内側継手部材との間に配置され、前記ボールを保持するケージとを備え、前記内側継手部材の軸孔に軸部材が挿嵌される摺動型等速自在継手であって、前記外側継手部材の内底面と、その外側継手部材の内底面に対向する前記内側継手部材の奥側端面とを前記軸部材の挿入時に線接触で当接可能にしたことを特徴とする。   As the second of the sliding type constant velocity universal joint of the present invention for solving the above problems, a bottomed cylindrical shape having an opening at one end is formed, and a plurality of track grooves are formed on the inner peripheral surface. An outer joint member, an axially movable inner joint member in which a plurality of track grooves facing the track grooves of the outer joint member are formed on the outer peripheral surface, the track groove of the outer joint member, and the track of the inner joint member A ball interposed between the groove, a cage disposed between the outer joint member and the inner joint member, and holding the ball, and the shaft member is inserted into the shaft hole of the inner joint member A sliding type constant velocity universal joint, wherein the inner bottom surface of the outer joint member and the inner side end surface of the inner joint member facing the inner bottom surface of the outer joint member are in line contact when the shaft member is inserted. It is characterized in that the contact can be made with.

本発明においても、軸部材の内側継手部材への挿嵌は、軸部材を内側継手部材の軸孔に挿入して圧入していくことにより行う。本発明の場合、内側継手部材の軸孔に軸部材を圧入する際、内側継手部材の奥側端面を外側継手部材の内底面に当接させることができるため、内側継手部材を固定して前記圧入作業を行うことができる。また、前記当接は線接触により可能となるため、内側継手部材の奥側端面と外側継手部材の内底面の接触状態を安定させることができ、かつ、内側継手部材に過大な荷重が加わることもない。   Also in the present invention, the shaft member is inserted into the inner joint member by inserting the shaft member into the shaft hole of the inner joint member and press-fitting it. In the case of the present invention, when the shaft member is press-fitted into the shaft hole of the inner joint member, the inner side end surface of the inner joint member can be brought into contact with the inner bottom surface of the outer joint member. Press-in work can be performed. Further, since the contact can be made by line contact, the contact state between the inner end surface of the inner joint member and the inner bottom surface of the outer joint member can be stabilized, and an excessive load is applied to the inner joint member. Nor.

本発明は、外側継手部材の内底面の線接触部位と内側継手部材の奥側端面の線接触部位を曲面とするか、或は、外側継手部材の内底面の線接触部位と内側継手部材の奥側端面の線接触部位のうち、一方をテーパ面とし、他方を曲面とすることにより実現することができる。   In the present invention, the line contact part on the inner bottom surface of the outer joint member and the line contact part on the inner side end surface of the inner joint member are curved surfaces, or the line contact part on the inner bottom surface of the outer joint member and the inner joint member It can be realized by making one of the line contact portions on the back end face a tapered surface and the other a curved surface.

外側継手部材の内底面の線接触部位と内側継手部材の奥側端面の線接触部位を曲面とする場合、互いの曲面の曲率半径を異にさせる必要がある。   When the line contact part on the inner bottom surface of the outer joint member and the line contact part on the inner side end face of the inner joint member are curved surfaces, it is necessary to make the curvature radii of the curved surfaces different from each other.

この場合、外側継手部材の内底面に内側継手部材の奥側端面を当接させて軸部材を内側継手部材に圧入する際、外側継手部材の内底面に線接触で当接させた内側継手部材が径方向に動こうとしても、外側継手部材の内底面でテーパ面或は曲面とした面接触部位で規制されるため、内側継手部材が径方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手の組立てる際の作業性を向上させることができる。   In this case, the inner joint member is brought into contact with the inner bottom surface of the outer joint member by line contact when the inner end surface of the inner joint member is brought into contact with the inner bottom surface of the outer joint member and the shaft member is press-fitted into the inner joint member. Even if it tries to move in the radial direction, the inner joint member can be prevented from rattling in the radial direction because it is restricted by the surface contact portion that is tapered or curved at the inner bottom surface of the outer joint member. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved.

上記の発明のように、外側継手部材の内底面の線接触部位と内側継手部材の奥側端面の線接触部位のうち、一方をテーパ面とし、他方を曲面とする場合、外側継手部材の内底面の線接触部位を径方向に対して外輪開口部側に傾斜させたテーパ面とし、前記内側継手部材の奥側端面の線接触部位を曲面とするのが望ましい。   As in the above invention, when one of the line contact part on the inner bottom surface of the outer joint member and the line contact part on the inner side end face of the inner joint member is a tapered surface and the other is a curved surface, It is desirable that the line contact portion on the bottom surface is a tapered surface inclined toward the outer ring opening with respect to the radial direction, and the line contact portion on the back end face of the inner joint member is a curved surface.

このように、外側継手部材の内底面の線接触部位を径方向に対して外輪開口部側に傾斜させたテーパ面とし、前記内側継手部材の奥側端面の線接触部位を曲面とすると、内側継手部材の奥側端面を外側継手部材の内底面に確実に線接触させることができ、かつ、外側継手部材の内底面は奥側に窪んだ簡易な形状になることから、外側継手部材の奥側端面の加工も容易となる。   As described above, when the line contact portion on the inner bottom surface of the outer joint member is a tapered surface inclined toward the outer ring opening with respect to the radial direction, and the line contact portion on the inner end surface of the inner joint member is a curved surface, The inner end surface of the outer joint member can be surely brought into line contact with the inner bottom surface of the outer joint member, and the inner bottom surface of the outer joint member has a simple shape recessed toward the inner side. Processing of the side end face is also facilitated.

これまでに述べた本発明において、軸部材の先端部を内側継手部材の奥側端面より突出させ、外側継手部材の内底面に軸部材の先端部の逃げ部を形成するようにしても良い。   In the present invention described so far, the distal end portion of the shaft member may be protruded from the inner end surface of the inner joint member, and the relief portion of the distal end portion of the shaft member may be formed on the inner bottom surface of the outer joint member.

この場合、軸部材の先端部は内側継手部材の奥側端面より突出するが、この突出部分は外側継手部材の内底面に形成した逃げ部に収容することができる。そのため、内側継手部材が奥側にプランジング（軸方向移動）した際、内側継手部材の奥側端面が外側継手部材の内底面に当接する前に軸部材の先端部が外側継手部材の内底面に接触し、これにより内側継手部材の軸方向移動量が少なくなるという事態を防止することができる。   In this case, the distal end portion of the shaft member protrudes from the inner end surface of the inner joint member, but this protruding portion can be accommodated in a relief portion formed on the inner bottom surface of the outer joint member. For this reason, when the inner joint member is plunged (moved in the axial direction) to the back side, the distal end of the shaft member is contacted with the inner bottom surface of the outer joint member before the inner end surface of the inner joint member contacts the inner bottom surface of the outer joint member. This can prevent a situation in which the amount of axial movement of the inner joint member is reduced.

さらにこれまでに説明した本発明のケージは、外側継手部材の内周面と摺接する球状外周面と、内側継手部材の外周面と摺接する球状内周面とを有し、ケージの球状内周面の軸方向中心をケージの球状外周面の軸方向中心よりも奥側とするのが望ましい。   Furthermore, the cage of the present invention described so far has a spherical outer peripheral surface that is in sliding contact with the inner peripheral surface of the outer joint member, and a spherical inner peripheral surface that is in sliding contact with the outer peripheral surface of the inner joint member. It is desirable that the axial center of the surface be located behind the axial center of the spherical outer peripheral surface of the cage.

この場合、内側継手部材は、軸孔に軸部材を挿嵌する際に外側継手部材の奥側に向けての力が加わると、ケージの球状内周面に内側継手部材を球面嵌合した際、内側継手部材の奥側端面がケージの奥側端面へ突出する傾向となる。この場合、軸部材の内側継手部材への挿嵌は、内側継手部材の奥側端面を外側継手部材の内底面に確実に当接させた状態で行うことができるため、等速自在継手の組立て時の作業性を確実に向上させることができる。また、内側継手部材の奥側端面を外側継手部材の内底面に当接させることから、ケージの奥側端面が外側継手部材の内底面に当接することがないため、ケージの耐久性が低下するのも効果的に防止することができる。   In this case, when a force toward the inner side of the outer joint member is applied to the inner joint member when the shaft member is inserted into the shaft hole, the inner joint member is spherically fitted to the spherical inner peripheral surface of the cage. The inner side end surface of the inner joint member tends to protrude toward the inner side end surface of the cage. In this case, the shaft member can be inserted into the inner joint member with the inner side end surface of the inner joint member abutting against the inner bottom surface of the outer joint member. Workability at the time can be improved reliably. In addition, since the inner end surface of the inner joint member is brought into contact with the inner bottom surface of the outer joint member, the inner end surface of the cage is not brought into contact with the inner bottom surface of the outer joint member, so that the durability of the cage is reduced. Can also be effectively prevented.

本発明では、外側継手部材の内底面と内側継手部材の奥側端面は、内側継手部材の軸孔に軸部材を挿嵌する際に当接可能である。この場合、内側継手部材の軸孔に軸部材を圧入により挿嵌した際、その圧入時の荷重を内側継手部材が受けるため、ケージに過大な荷重が加わって、その耐久性を低下させることがない。そのため、継手サブアッシーの製造メーカーと継手総アッシーの製造メーカとが異なる場合など、継手サブアッシーを一旦組立てた後に軸部材を内側継手部材に圧入する必要がある場合に、継手サブアッシーを外側継手部材と内部部品に分解することなく継手総アッシーを完成させることができ、管理する必要のある部品点数が増すこともない。この結果、等速自在継手の組立て工数や管理工数を低減させて、等速自在継手の組立て時の作業性およびこの組立て時に必要なコストを削減することができる。なお、本発明では、従来のように継手重量を大きくすることがないため、上記の作用および効果が顕著である。   In the present invention, the inner bottom surface of the outer joint member and the inner end surface of the inner joint member can contact when the shaft member is inserted into the shaft hole of the inner joint member. In this case, when the shaft member is inserted into the shaft hole of the inner joint member by press-fitting, the inner joint member receives the load at the time of the press-fitting, so that an excessive load is applied to the cage and the durability thereof may be reduced. Absent. Therefore, when it is necessary to press-fit the shaft member into the inner joint member after assembling the joint subassembly once, such as when the manufacturer of the joint subassembly is different from the manufacturer of the joint total assembly, The joint assembly can be completed without disassembling the members and internal parts, and the number of parts that need to be managed is not increased. As a result, the assembly man-hours and management man-hours of the constant velocity universal joint can be reduced, and the workability at the time of assembling the constant velocity universal joint and the cost required for the assembly can be reduced. In the present invention, since the weight of the joint is not increased as in the prior art, the above actions and effects are remarkable.

また、本発明において、上述した当接は面接触或は線接触で可能である。この場合、内側継手部材の奥側端面と外側継手部材の内底面との接触状態を安定させることができるため、内側継手部材の軸孔に軸部材を挿嵌する際の作業性を向上させることができる。また、内側継手部材に局部的に過大な荷重が加わることがないため、内側継手部材の耐久性も向上させることができる。   In the present invention, the above-mentioned contact can be made by surface contact or line contact. In this case, since the contact state between the back end face of the inner joint member and the inner bottom surface of the outer joint member can be stabilized, the workability when the shaft member is inserted into the shaft hole of the inner joint member is improved. Can do. Moreover, since an excessive load is not locally applied to the inner joint member, the durability of the inner joint member can also be improved.

以下に本発明の実施の形態について、添付の図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図３に本発明の第１の実施形態を示す。この等速自在継手１は、摺動型等速自在継手の一つであるダブルオフセット型等速自在継手（ＤＯＪ）であり、外側継手部材である外輪２と、内側継手部材である内輪３、ボール４、ケージ５を主要部とし、外輪２の内部には、内輪３とボール４とケージ５で構成され、外輪２に対して相対動作する軸方向移動可能な内部部品６が収容配置されている。   FIG. 3 shows a first embodiment of the present invention. The constant velocity universal joint 1 is a double offset type constant velocity universal joint (DOJ) which is one of sliding type constant velocity universal joints, and includes an outer ring 2 which is an outer joint member and an inner ring 3 which is an inner joint member. The ball 4 and the cage 5 are the main parts, and the inner ring 6, which is composed of the inner ring 3, the ball 4 and the cage 5, and which moves relative to the outer ring 2 is accommodated in the outer ring 2. Yes.

外輪２は一端に開口部を有する有底円筒状で、その円筒状の内周面には複数の直線状のトラック溝７が形成されている。内輪３の球面状の外周面には、外輪２のトラック溝７と対向する複数の直線状のトラック溝８が形成されている。外輪２のトラック溝７と内輪３のトラック溝８との間には、複数のボール４が介在され、これらのボール４は、ケージ５のポケット２０で保持されている。   The outer ring 2 has a bottomed cylindrical shape having an opening at one end, and a plurality of linear track grooves 7 are formed on the inner peripheral surface of the cylindrical shape. A plurality of linear track grooves 8 facing the track grooves 7 of the outer ring 2 are formed on the spherical outer peripheral surface of the inner ring 3. A plurality of balls 4 are interposed between the track grooves 7 of the outer ring 2 and the track grooves 8 of the inner ring 3, and these balls 4 are held in the pockets 20 of the cage 5.

内輪３は中心に中心孔２１を有し、この中心孔２１には軸部材であるシャフト９がスプライン挿嵌されており、シャフト９の奥側端面２３は内輪３の奥側端面１５と軸方向位置が一致するか、突出しないようにしている。内輪３の中心孔２１には環状の凹溝１４が形成され、シャフト９の奥側端部の外周面には環状の凹溝１２が形成されており、内輪３の凹溝１４とシャフト９の凹溝１２との間には、サークリップ１０が介在されている。このサークリップ１０は、内輪３の中心孔２１からシャフト９が抜け出るのを防止する。   The inner ring 3 has a center hole 21 in the center, and a shaft 9 as a shaft member is inserted into the center hole 21 by spline. The inner end surface 23 of the shaft 9 is axially connected to the inner end face 15 of the inner ring 3. The positions match or do not protrude. An annular groove 14 is formed in the center hole 21 of the inner ring 3, and an annular groove 12 is formed on the outer peripheral surface of the inner end of the shaft 9. A circlip 10 is interposed between the grooves 12. The circlip 10 prevents the shaft 9 from coming out of the center hole 21 of the inner ring 3.

外輪２の開口端部１７の内周面には環状の凹溝１３が形成され、この凹溝１３には環状のサークリップ１１が嵌合されている。このサークリップ１１は、内部部品６が外輪２の開口部側へ軸方向移動した際、この軸方向移動を規制し、内部部品６が外輪２の内部から外部へ抜け出るのを防止する。   An annular concave groove 13 is formed on the inner peripheral surface of the open end 17 of the outer ring 2, and an annular circlip 11 is fitted into the concave groove 13. The circlip 11 restricts this axial movement when the internal part 6 moves in the axial direction toward the opening of the outer ring 2 and prevents the internal part 6 from slipping out of the outer ring 2 to the outside.

ケージ５は、その外周面に外輪２の内周面と摺接する球状外周面１９を有し、その内周面に内輪３の外周面と摺接する球状内周面１８を有する。また、図１に示すように、球状内周面１８の軸方向中心Ａは、球状外周面１９の軸方向中心Ｂよりも奥側（外輪反開口部側）とし、内輪３の軸方向中心はケージ５の球状内周面１８における中心Ａと一致している。この場合、ケージ５の奥側端面２２から内輪３の軸方向中心Ａまでの軸方向距離Ｄは、ケージ５の外輪開口部側端面から内輪３の軸方向中心Ａまでの軸方向距離Ｃよりも短くなる。このため、図１〜図３に示すように、内輪３をケージ５の球状内周面１８に球面嵌合させた際、内輪３の奥側端面１５がケージ５の奥側端面２２よりも奥側へ突出する。   The cage 5 has a spherical outer peripheral surface 19 in sliding contact with the inner peripheral surface of the outer ring 2 on its outer peripheral surface, and has a spherical inner peripheral surface 18 in sliding contact with the outer peripheral surface of the inner ring 3 on its inner peripheral surface. Further, as shown in FIG. 1, the axial center A of the spherical inner peripheral surface 18 is on the back side (outer ring opposite opening side) from the axial center B of the spherical outer peripheral surface 19, and the axial center of the inner ring 3 is This coincides with the center A of the spherical inner peripheral surface 18 of the cage 5. In this case, the axial distance D from the rear end surface 22 of the cage 5 to the axial center A of the inner ring 3 is larger than the axial distance C from the outer ring opening side end surface of the cage 5 to the axial center A of the inner ring 3. Shorter. For this reason, as shown in FIGS. 1 to 3, when the inner ring 3 is spherically fitted to the spherical inner peripheral surface 18 of the cage 5, the inner end surface 15 of the inner ring 3 is deeper than the inner end surface 22 of the cage 5. Protrudes to the side.

本実施形態の場合、等速自在継手１（継手総アッシー）は、以下の工程で組立てることができる。   In the case of this embodiment, the constant velocity universal joint 1 (joint total assembly) can be assembled in the following steps.

まず、図１に示すように、ケージ５のポケット２０にボール４を組み込んだ後にケージ５の球状内周面１８に内輪３を球面嵌合した内部部品６（カセット）を、外輪２の内部に図中白抜き矢印で示す方向に組み込んで、内輪３の奥側端面１５を外輪２の内底面１６に当接させて継手サブアッシーを完成させる。   First, as shown in FIG. 1, an internal component 6 (cassette) in which the inner ring 3 is spherically fitted to the spherical inner peripheral surface 18 of the cage 5 after the ball 4 is assembled in the pocket 20 of the cage 5 is placed inside the outer ring 2. The joint sub-assembly is completed by assembling in the direction indicated by the hollow arrow in the figure and bringing the inner end face 15 of the inner ring 3 into contact with the inner bottom face 16 of the outer ring 2.

次に、図２に示すように、外輪２の開口端部１７の内周面に形成した凹溝１３に環状のサークリップ１１を嵌合し、外周面の凹溝１２にサークリップ１０を嵌合させた状態のシャフト９を、内輪３の軸孔２１に、図中白抜き矢印で示す方向へ挿入して圧入していく。この圧入は、シャフト９の凹溝１２に嵌合したサークリップ１０が拡径して内輪３の凹溝１４に嵌合するまで、つまり、シャフト９の肩部３０が内輪３の面取り部３１に当接するまで進める。以上の工程により、図３に示す継手総アッシーを完成させることができる。   Next, as shown in FIG. 2, the annular circlip 11 is fitted into the concave groove 13 formed on the inner peripheral surface of the opening end 17 of the outer ring 2, and the circlip 10 is fitted into the concave groove 12 on the outer peripheral surface. The combined shaft 9 is inserted into the shaft hole 21 of the inner ring 3 in the direction indicated by the white arrow in the drawing and press-fitted. This press-fitting is performed until the circlip 10 fitted in the concave groove 12 of the shaft 9 expands in diameter and engages with the concave groove 14 of the inner ring 3, that is, the shoulder portion 30 of the shaft 9 contacts the chamfered portion 31 of the inner ring 3. Proceed until contact. Through the above steps, the joint total assembly shown in FIG. 3 can be completed.

本実施形態において、上記の工程のように、継手サブアッシーの状態で内輪３にシャフト９を挿嵌することができる理由としては、内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面１５を外輪２の内底面１６に当接することにより内輪３を固定した状態で行うことが可能であり、また、ケージ５の奥側端面２２は外輪２の内底面１６に当接しないことから、ケージ５に過大な荷重が加わってその耐久性を低下させてしまうことがないためである。   In the present embodiment, the reason why the shaft 9 can be inserted into the inner ring 3 in the joint sub-assy state as in the above process is that the shaft 9 is inserted into the shaft hole 21 of the inner ring 3 by press-fitting. The inner ring 3 can be fixed by bringing the inner end 3 into contact with the inner bottom surface 16 of the outer ring 2, and the inner end surface 22 of the cage 5 is used as the inner end surface 16 of the outer ring 2. This is because an excessive load is not applied to the cage 5 and its durability is not lowered.

この結果、継手サブアッシーの製造メーカーと継手総アッシーの製造メーカが異なる場合など、継手サブアッシーを一旦組立てた後にシャフト９を挿嵌する必要がある場合に、継手サブアッシーを外輪２と内部部品６に分解することなく継手総アッシーを完成させることができ、管理する必要のある部品点数が増すこともない。この結果、等速自在継手１の組立て工数や管理工数を低減させて、等速自在継手１の組立て時の作業性およびこの組立て時に必要なコストを削減することができる。なお、本実施形態では、従来のように継手重量を大きくすることがないため、上記の作用および効果が顕著である。   As a result, when it is necessary to insert the shaft 9 after assembling the joint sub-assembly once, such as when the manufacturer of the joint sub-assembly is different from the manufacturer of the joint total assembly, the joint sub-assembly is connected to the outer ring 2 and the internal parts. The joint assembly can be completed without being disassembled into 6, and the number of parts that need to be managed does not increase. As a result, the assembly man-hours and management man-hours of the constant velocity universal joint 1 can be reduced, and the workability at the time of assembling the constant velocity universal joint 1 and the cost required for the assembly can be reduced. In this embodiment, since the weight of the joint is not increased as in the prior art, the above-described functions and effects are remarkable.

また、本実施形態では、内輪３の軸孔２１にシャフト９を挿入して圧入する際、図２に示すように、内輪３の奥側端面１５と外輪２の内底面１６を面接触により当接可能としている。   Further, in this embodiment, when the shaft 9 is inserted into the shaft hole 21 of the inner ring 3 and press-fitted, as shown in FIG. 2, the inner end surface 15 of the inner ring 3 and the inner bottom surface 16 of the outer ring 2 are contacted by surface contact. It is possible to contact.

具体的には、図１に示すように、内輪３の奥側端面１５において外輪２の内底面１６と面接触する面接触部位２５は径方向に対して内輪中心側にα°傾斜させたテーパ面とし、外輪２の内底面１６において、内輪２の奥側端面１５と面接触する面接触部位２６を、外輪２の面接触部位２５と合致する形状のテーパ面とする。   Specifically, as shown in FIG. 1, a surface contact portion 25 that is in surface contact with the inner bottom surface 16 of the outer ring 2 on the inner side end surface 15 of the inner ring 3 is tapered by α ° toward the inner ring center with respect to the radial direction. In the inner bottom surface 16 of the outer ring 2, the surface contact portion 26 that is in surface contact with the inner end surface 15 of the inner ring 2 is a tapered surface that matches the surface contact portion 25 of the outer ring 2.

この場合、図２に示すように、内輪３の奥側端面１５の面接触部位２５を外輪２の内底面１６の面接触部位２６に当接させて内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面１５を外輪２の内底面１６に面接触で安定して接触させることができるため、上述した圧入作業の作業性を向上させることができる。また、内輪３には局部的に上述した当接時の力が加わることがないため、内輪３の耐久性も向上させることができる。   In this case, as shown in FIG. 2, the surface contact portion 25 of the inner side 3 of the inner ring 3 is brought into contact with the surface contact portion 26 of the inner bottom surface 16 of the outer ring 2 to press-fit the shaft 9 into the shaft hole 21 of the inner ring 3. Therefore, the inner end 3 of the inner ring 3 can be stably brought into contact with the inner bottom surface 16 of the outer ring 2 by surface contact, so that the workability of the press-fit operation described above can be improved. In addition, since the above-described contact force is not applied locally to the inner ring 3, the durability of the inner ring 3 can also be improved.

さらに、本実施形態の場合、上記のよう外輪２の内底面１６に内輪３の奥側端面１５を当接させてシャフト９を内輪３に圧入により挿嵌する際、外輪２の内底面１６に面接触で当接させた内輪３が周方向および径方向に動こうとしても、外輪２の内底面１６でテーパ面とした面接触部位２６で規制されることにより、内輪３と外輪２は互いの軸線がセンタリングされて内輪３が外輪２の内部で位置決めされるため、内輪３が径方向および周方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手の組立てる際の作業性を向上させることができる。   Further, in the case of the present embodiment, when the shaft 9 is inserted into the inner ring 3 by press-fitting the inner side 3 with the inner end surface 15 of the inner ring 3 in contact with the inner bottom surface 16 of the outer ring 2 as described above, Even if the inner ring 3 abutted by surface contact tries to move in the circumferential direction and the radial direction, the inner ring 3 and the outer ring 2 are mutually controlled by being restricted by the surface contact portion 26 having a tapered surface on the inner bottom surface 16 of the outer ring 2. Since the inner ring 3 is centered and the inner ring 3 is positioned inside the outer ring 2, it is possible to prevent the inner ring 3 from rattling in the radial direction and the circumferential direction. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved.

図４に本発明の第２の実施形態を示す。以下の実施形態において、図１〜図３に示す第１の実施形態と同じ部位、機能を有する部品については同じ符号を付して、その詳細な説明を省略する。   FIG. 4 shows a second embodiment of the present invention. In the following embodiments, parts having the same parts and functions as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

この図４に示す摺動型等速自在継手では、シャフト９の先端部を内輪３の奥側端面１５より奥側に突出させ、シャフト９は、その外周面に形成された凹溝７４と内輪３の軸孔２１の奥側端部に形成された凹溝７２との間にサークリップ７５を嵌合することで内輪３から抜け出るのが防止している。また、外輪２の内底面２５の径方向中央部には、凹状の逃げ部７３を形成する。   In the sliding type constant velocity universal joint shown in FIG. 4, the tip end portion of the shaft 9 is protruded to the back side from the back end surface 15 of the inner ring 3, and the shaft 9 has a concave groove 74 formed on the outer peripheral surface thereof and the inner ring. The circlip 75 is fitted to the groove 72 formed in the back end of the third shaft hole 21 to prevent the inner ring 3 from coming out. In addition, a concave relief portion 73 is formed at the radial center of the inner bottom surface 25 of the outer ring 2.

本実施形態では、シャフト９の先端部を内輪３の奥側端面１５より奥側に突出させるが、この先端部を収容する収容部としての逃げ部７３が外輪２の奥側端面２５に形成されているため、内部部品６が奥側に軸方向移動しても、シャフト９の先端部は、外輪２の内底面２５の逃げ部７３に収容される。このため、内部部品６の軸方向移動量が少なくなることがない。   In the present embodiment, the tip end portion of the shaft 9 is projected to the back side from the back end surface 15 of the inner ring 3, but a relief portion 73 as a receiving portion for storing the tip end portion is formed on the back side end surface 25 of the outer ring 2. Therefore, even if the internal component 6 moves in the axial direction to the back side, the tip end portion of the shaft 9 is accommodated in the escape portion 73 of the inner bottom surface 25 of the outer ring 2. For this reason, the amount of axial movement of the internal component 6 does not decrease.

また、本実施形態でも、図１〜図３に示す第１の実施形態と同様、シャフト９を内輪３の軸孔２１に圧入する際、内輪３の奥側端面１５を外輪２の内底面２５に面接触で当接させる。この際、前記圧入時にシャフト９の先端部は内輪３の奥側端面１５よりも奥側に突出することになるが、この部分は外輪２の内底面２５の逃げ部７３に収容されるため、前記圧入作業を確実に行うことができる。   Also in the present embodiment, as in the first embodiment shown in FIGS. 1 to 3, when the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3, the inner side bottom surface 25 of the outer ring 2 is connected to the rear end surface 15 of the inner ring 3. It is made to contact by surface contact. At this time, the tip end portion of the shaft 9 protrudes to the back side from the back end surface 15 of the inner ring 3 at the time of the press-fitting, but this portion is accommodated in the escape portion 73 of the inner bottom surface 25 of the outer ring 2. The press-fitting work can be performed reliably.

なお、本実施形態において他の作用及び効果や構造については、図１〜図３に示す第１の実施形態と同じであるため、その詳細な説明を省略する。   In addition, about another effect | action, an effect, and a structure in this embodiment, since it is the same as 1st Embodiment shown in FIGS. 1-3, the detailed description is abbreviate | omitted.

図５および図６に本発明の第３の実施形態を示す。   5 and 6 show a third embodiment of the present invention.

本実施形態では、図１〜図３に示す第１の実施形態と同様、内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面３４と外輪２の内底面３６とを面接触で当接可能としている。   In the present embodiment, as in the first embodiment shown in FIGS. 1 to 3, when the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3 by press-fitting, the inner end face 34 of the inner ring 3 and the inner bottom face of the outer ring 2. 36 can be contacted by surface contact.

具体的には、内輪３の奥側端面３４において外輪２の内底面３６と面接触する面接触部位３５を曲面とし、外輪２の内底面３６において内輪３の奥側端面３４と面接触する面接触部位３７を、内輪３の面接触部位３５の曲面と合致する曲面、つまり、曲率半径が等しい曲面とする。   Specifically, a surface contact portion 35 that is in surface contact with the inner bottom surface 36 of the outer ring 2 is curved on the back end surface 34 of the inner ring 3, and a surface that is in surface contact with the rear end surface 34 of the inner ring 3 on the inner bottom surface 36 of the outer ring 2. The contact portion 37 is a curved surface that matches the curved surface of the surface contact portion 35 of the inner ring 3, that is, a curved surface having the same curvature radius.

本実施形態において、継手総アッシーの組立ては次のようにして行う。   In the present embodiment, the assembly of the joint assembly is performed as follows.

まず、図５に示すようにカセットである内部部品６を図中白抜き矢印で示す方向に外輪２の内部に組み込んで内輪３の奥側端面３４の面接触部位３５（曲面）を外輪２の奥側端面３６の面接触部位３７（曲面）に面接触で当接させ、その後、図６に示すように、内輪３の軸孔２１にシャフト９を圧入により挿嵌して継手総アッシーを完成させる。   First, as shown in FIG. 5, the internal part 6 that is a cassette is incorporated into the outer ring 2 in the direction indicated by the white arrow in the figure, and the surface contact portion 35 (curved surface) of the inner side end surface 34 of the inner ring 3 is set to the outer ring 2. Contact with the surface contact portion 37 (curved surface) of the back end surface 36 by surface contact, and then, as shown in FIG. 6, the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3 to complete the joint assembly. Let

本実施形態において、上記の工程における作用及び効果、また、上記の工程で継手総アッシーを組立てることができる理由については、既に説明した図１〜図３に示す本発明の第１の実施形態と同様であるため、その詳細な説明を省略する。しかし、本実施形態の場合、外輪２の内底面３６に内輪３の奥側端面３４を当接させてシャフト９を内輪３に圧入する際、外輪２の内底面３６に面接触で当接させた内輪３が径方向に動こうとしても、外輪２の内底面３６で曲面とした面接触部位３７で規制されることにより、内輪３と外輪２は互いの軸線がセンタリングされて内輪３が外輪２の内部で位置決めされるため、内輪３が径方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手の組立てる際の作業性を向上させることができる。   In the present embodiment, the actions and effects in the above steps, and the reason why the joint total assembly can be assembled in the above steps are the same as those in the first embodiment of the present invention shown in FIGS. Since it is the same, the detailed description is abbreviate | omitted. However, in the case of this embodiment, when the shaft 9 is press-fitted into the inner ring 3 by bringing the inner end surface 34 of the inner ring 3 into contact with the inner bottom surface 36 of the outer ring 2, the inner ring 36 is brought into contact with the inner bottom surface 36 of the outer ring 2 by surface contact. Even if the inner ring 3 tries to move in the radial direction, the inner ring 3 and the outer ring 2 are centered with respect to each other by the surface contact portion 37 having a curved surface by the inner bottom surface 36 of the outer ring 2, so that the inner ring 3 becomes the outer ring. Therefore, the inner ring 3 can be prevented from rattling in the radial direction. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved.

図７および図８に本発明の第４の実施形態を示す。   7 and 8 show a fourth embodiment of the present invention.

本実施形態では、内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面４４と外輪２の内底面４６とを線接触で当接可能としている。これは、内輪３の奥側端面４４において外輪２の内底面４６と線接触する線接触部位４５を曲面とし、かつ、外輪２の内底面４６において、内輪３の奥側端面４４と線接触する線接触部位４７を、内輪３の線接触部位４５と異なる曲率半径の曲面とすることで可能としている。   In the present embodiment, when the shaft 9 is inserted into the shaft hole 21 of the inner ring 3 by press-fitting, the rear end surface 44 of the inner ring 3 and the inner bottom surface 46 of the outer ring 2 can be brought into contact with each other by line contact. This is because the line contact portion 45 that makes line contact with the inner bottom surface 46 of the outer ring 2 is curved on the inner end face 44 of the inner ring 3, and line contact is made with the inner end face 44 of the inner ring 3 on the inner bottom face 46 of the outer ring 2. The line contact part 47 is made a curved surface having a different curvature radius from the line contact part 45 of the inner ring 3.

本実施形態において、継手総アッシーの組立ては、図７に示すようにカセットである内部部品６を図中白抜き矢印で示す方向に外輪２の内部に組み込んで内輪３の奥側端面４４の線接触部位４５（曲面）を外輪２の奥側端面４６の線接触部位４７（曲面）に線接触で当接させ、その後、図８に示すように、内輪３の軸孔２１にシャフト９を圧入により挿嵌して継手総アッシーを完成させることができる。上記の工程における作用及び効果、また、上記の工程で継手総アッシーを組立てることができる理由については、既に説明した図１〜図３に示す本発明の第１の実施形態と同様であるため、その詳細な説明を省略する。   In the present embodiment, the assembly of the joint assembly is assembled by inserting the inner part 6 as a cassette into the outer ring 2 in the direction indicated by the white arrow in the figure and inserting the inner end 3 into the line on the inner side end face 44 as shown in FIG. The contact part 45 (curved surface) is brought into contact with the line contact part 47 (curved surface) of the back end face 46 of the outer ring 2 by line contact, and then the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3 as shown in FIG. To complete the joint assembly. Since the actions and effects in the above steps and the reason why the joint total assembly can be assembled in the above steps are the same as those in the first embodiment of the present invention shown in FIGS. Detailed description thereof is omitted.

また、本実施形態では、外輪２の内底面４６に内輪３の奥側端面４５を当接させてシャフト９を内輪３に圧入する際、外輪２の内底面４６に線接触で当接させた内輪３が径方向に動こうとしても、外輪２の内底面４６で曲面とした線接触部位４７で規制されることにより、内輪３と外輪２は互いの軸線がセンタリングされて内輪３が外輪２の内部で位置決めされるため、内輪３が径方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手の組立てる際の作業性を向上させることができる。   Further, in the present embodiment, when the shaft 9 is press-fitted into the inner ring 3 by bringing the inner end face 46 of the inner ring 3 into contact with the inner bottom face 46 of the outer ring 2, the inner ring 46 is brought into contact with the inner bottom face 46 of the outer ring 2 by line contact. Even if the inner ring 3 tries to move in the radial direction, the inner ring 3 and the outer ring 2 are centered with respect to each other by being regulated by the line contact portion 47 having a curved surface on the inner bottom surface 46 of the outer ring 2, so Therefore, the inner ring 3 can be prevented from rattling in the radial direction. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved.

図９および図１０に本発明の第５の実施形態を示す。   9 and 10 show a fifth embodiment of the present invention.

本実施形態においても、内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面５４と外輪２の内底面５６とを線接触で当接可能とする。   Also in this embodiment, when the shaft 9 is inserted into the shaft hole 21 of the inner ring 3 by press-fitting, the inner end surface 54 of the inner ring 3 and the inner bottom surface 56 of the outer ring 2 can be brought into contact with each other by line contact.

これは、内輪３の奥側端面５４において、外輪２の内底面５６と線接触する線接触部位５５を曲面とし、外輪２の内底面５６において、内輪３の奥側端面５４と線接触する線接触部位５７を、径方向に対して外輪開口部側にβ°だけ傾斜させたテーパ面とすることで可能としている。   This is because the line contact portion 55 that makes line contact with the inner bottom surface 56 of the outer ring 2 is curved on the back end surface 54 of the inner ring 3, and the line that makes line contact with the back end surface 54 of the inner ring 3 on the inner bottom surface 56 of the outer ring 2. The contact portion 57 is made to be a tapered surface inclined by β ° toward the outer ring opening with respect to the radial direction.

この場合、図９に示すようにカセットである内部部品６を図中白抜き矢印で示す方向に外輪２の内部に組み込んで内輪３の奥側端面５４の線接触部位（曲面）を外輪２の内底面５６の線接触部位（テーパ面）に線接触で当接させ、その後、図１０に示すように、内輪３の軸孔２１にシャフト９を圧入により挿嵌して継手総アッシーを完成させることができる。この理由についての詳細およびこの時の作用および効果については、図１〜図３に示す第１の実施形態と同じであるため、その詳細な説明を省略する。   In this case, as shown in FIG. 9, the internal part 6 that is a cassette is incorporated in the outer ring 2 in the direction indicated by the white arrow in the figure, and the line contact portion (curved surface) of the inner side end surface 54 of the inner ring 3 is As shown in FIG. 10, the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3 to complete the joint assembly as shown in FIG. be able to. Details about this reason and the operation and effect at this time are the same as those in the first embodiment shown in FIGS.

また、本実施形態の場合、内輪３の奥側端面５４を外輪２の内底面５６に線接触で安定して接触させることができる。この時の作用および効果については、図７および図８に示す第４の実施形態と同じであるため、その詳細な説明を省略する。   Further, in the case of this embodiment, the inner side end surface 54 of the inner ring 3 can be stably brought into contact with the inner bottom surface 56 of the outer ring 2 by line contact. Since the operation and effect at this time are the same as those of the fourth embodiment shown in FIGS. 7 and 8, detailed description thereof is omitted.

さらに、本実施形態のように、内輪３の奥側端面５４において、外輪２の内底面５６との線接触部位５５を曲面とし、外輪２の内底面５６において、内輪３の奥側端面５４との線接触部位５７を、径方向に対して外輪開口部側に傾斜させたテーパ面とすると、内輪３の奥側端面５４を外輪２の内底面５６に確実に線接触させることができ、かつ、外輪２の内底面５６は奥側に窪んだ簡易な形状になることから、外輪２の内底面５６の加工も容易となる。   Further, as in the present embodiment, a line contact portion 55 with the inner bottom surface 56 of the outer ring 2 is a curved surface at the inner end surface 54 of the inner ring 3, and the inner end surface 54 of the inner ring 3 is If the line contact part 57 is a tapered surface inclined toward the outer ring opening with respect to the radial direction, the inner end face 54 of the inner ring 3 can be surely brought into line contact with the inner bottom face 56 of the outer ring 2, and Since the inner bottom surface 56 of the outer ring 2 has a simple shape recessed toward the back side, the processing of the inner bottom surface 56 of the outer ring 2 is facilitated.

図１１および図１２に本発明の第６の実施形態を示す。   11 and 12 show a sixth embodiment of the present invention.

本実施形態においては、内輪３の軸孔２１にシャフト９を圧入により挿嵌する際、内輪３の奥側端面６４と外輪２の内底面６６とを面接触で当接可能とする。この手段について以下に説明する。   In the present embodiment, when the shaft 9 is inserted into the shaft hole 21 of the inner ring 3 by press-fitting, the rear end surface 64 of the inner ring 3 and the inner bottom surface 66 of the outer ring 2 can be brought into contact with each other by surface contact. This means will be described below.

内輪３の奥側端面６４において、外輪２の内底面６６に面接触する面接触部位６５は、曲面６３および径方向に対して内輪中央部側にγ°傾斜させたテーパ面６２が外径側から順に連続した形状とする。一方、外輪２の内底面６６において、内輪３の奥側端面６４が面接触する面接触部位６７は、外輪２の面接触部位６５と合致する形状とし、詳しくは、内輪３の面接触部位６５の曲面６３と曲率半径が等しい曲面６９および内輪３の面接触部位６５のテーパ面６２と傾斜方向および傾斜角度が同じであるテーパ面６８が外径側から順に連続した形状とする。   A surface contact portion 65 that is in surface contact with the inner bottom surface 66 of the outer ring 2 on the inner end surface 64 of the inner ring 3 has a curved surface 63 and a tapered surface 62 that is inclined γ ° toward the inner ring central portion side with respect to the radial direction. The shape is continuous in order. On the other hand, on the inner bottom surface 66 of the outer ring 2, the surface contact portion 67 where the inner end surface 64 of the inner ring 3 comes into surface contact has a shape that matches the surface contact portion 65 of the outer ring 2. The curved surface 69 having the same radius of curvature as the curved surface 63 and the tapered surface 68 having the same inclination direction and the same inclination angle as the tapered surface 62 of the surface contact portion 65 of the inner ring 3 are formed in a continuous shape from the outer diameter side.

この場合、図１１に示すようにカセットである内部部品６を図中白抜き矢印で示す方向に外輪２の内部に組み込んで内輪３の奥側端面６４の面接触部位６５（テーパ面６２、曲面６３）を外輪２の内底面６６の面接触部位６７（テーパ面６８、曲面６９）に面接触で当接させ、その後、図１２に示すように、内輪３の軸孔２１にシャフト９を圧入により挿嵌して継手総アッシーを完成させることができる。この理由そして作用および効果については、図１〜図３に示す第１の実施形態と同じであるため、その詳細な説明を省略する。   In this case, as shown in FIG. 11, the internal component 6 that is a cassette is incorporated into the outer ring 2 in the direction indicated by the white arrow in the figure, and the surface contact portion 65 (tapered surface 62, curved surface) of the rear end face 64 of the inner ring 3. 63) is brought into contact with the surface contact portion 67 (tapered surface 68, curved surface 69) of the inner bottom surface 66 of the outer ring 2 by surface contact, and then the shaft 9 is press-fitted into the shaft hole 21 of the inner ring 3 as shown in FIG. To complete the joint assembly. The reason, action, and effect are the same as those in the first embodiment shown in FIGS.

なお、本実施形態においても、外輪２の内底面６６に内輪３の奥側端面６４を当接させてシャフト９を内輪３に圧入して挿嵌する際、外輪２の内底面６６に面接触で当接させた内輪３が周方向および径方向に動こうとしても、外輪２の面接触部位６７のテーパ面６８で規制されることにより、内輪３と外輪２は互いの軸線がセンタリングされて内輪３が外輪２の内部で位置決めされるため、内輪３が径方向および周方向にガタつくのを抑えることができる。この結果、前記圧入作業が容易となって、等速自在継手を組立てる際の作業性を向上させることができる。   In the present embodiment, when the shaft 9 is press-fitted into the inner ring 3 with the inner side surface 66 of the inner ring 3 being brought into contact with the inner bottom surface 66 of the outer ring 2, the surface contact is made with the inner bottom surface 66 of the outer ring 2. Even if the inner ring 3 brought into contact with the outer ring 2 tries to move in the circumferential direction and the radial direction, the inner ring 3 and the outer ring 2 are centered with respect to each other by being regulated by the tapered surface 68 of the surface contact portion 67 of the outer ring 2. Since the inner ring 3 is positioned inside the outer ring 2, it is possible to prevent the inner ring 3 from rattling in the radial direction and the circumferential direction. As a result, the press-fitting operation becomes easy, and the workability when assembling the constant velocity universal joint can be improved.

以上、本発明の実施形態について説明したが、本発明は、外輪は、その内周面に軸線に対して傾斜する複数の直線状のトラック溝が形成され、内輪は、その外周面に軸線に対して外輪のトラック溝と反対方向に傾斜する複数の直線状のトラック溝が形成され、外輪のトラック溝と内輪のトラック溝とで形成された複数の交叉部にボールが組み込まれ、外輪と内輪との間にボールを保持するケージを備えた摺動型等速自在継手の一つであるクロスグルーブ型等速自在継手（ＬＪ）にも適用することができる。   As described above, the embodiment of the present invention has been described. In the present invention, the outer ring has a plurality of linear track grooves that are inclined with respect to the axis on the inner peripheral surface, and the inner ring has an axis on the outer peripheral surface. On the other hand, a plurality of linear track grooves inclined in the opposite direction to the track grooves of the outer ring are formed, and balls are incorporated into a plurality of intersections formed by the track grooves of the outer ring and the track grooves of the inner ring, and the outer ring and the inner ring The present invention can also be applied to a cross-groove type constant velocity universal joint (LJ) which is one of sliding type constant velocity universal joints having a cage for holding a ball therebetween.

なお、ここで挙げた実施形態はあくまで例示であり、特許請求の範囲に記載の意味および内容の範囲内で全ての変更が可能である。   The embodiments described here are merely examples, and all modifications can be made within the meaning and contents described in the claims.

例えば、外輪の内底面において、内輪の奥側端部と線接触する線接触部位をテーパ面とし、内輪の奥側端面において、外輪の内底面と線接触する線接触部位を軸線と直交する面とすることもできる。この場合、内輪の奥側端面を外輪の内底面に当接させてシャフトを内輪に圧入により挿嵌する際、内輪を外輪の内部で位置決めして、内輪が径方向にガタつくのを抑えることができる。また、内輪には局部的に前記当接時の力が加わることがないため、内輪の耐久性も向上させることができる。   For example, on the inner bottom surface of the outer ring, a line contact part that makes line contact with the inner side of the inner ring is a tapered surface, and on the inner side of the inner ring, the line contact part that makes line contact with the inner bottom surface of the outer ring is a surface orthogonal to the axis. It can also be. In this case, when the inner side of the inner ring is brought into contact with the inner bottom surface of the outer ring and the shaft is press-fitted into the inner ring, the inner ring is positioned inside the outer ring to prevent the inner ring from rattling in the radial direction. Can do. In addition, since the force at the time of contact is not locally applied to the inner ring, the durability of the inner ring can be improved.

本発明の第１の実施形態を示すもので、外輪に内部部品（カセット）を組み込んで継手サブアッシーを組立てる工程を説明する断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a process of assembling a joint subassembly by incorporating an internal part (cassette) into an outer ring according to a first embodiment of the present invention. 本発明の第１の実施形態を示すもので、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a step of assembling a joint total assembly by inserting a shaft into a joint sub-assembly according to the first embodiment of the present invention. 本発明の第１の実施形態を示す断面図である。It is sectional drawing which shows the 1st Embodiment of this invention. 本発明の第２の実施形態を示す断面図である。It is sectional drawing which shows the 2nd Embodiment of this invention. 本発明の第３の実施形態を示すもので、外輪に内部部品（カセット）を組み込んで継手サブアッシーを組立てる工程を説明する断面図である。FIG. 9 is a cross-sectional view illustrating a process of assembling a joint subassembly by incorporating an internal part (cassette) into an outer ring according to a third embodiment of the present invention. 本発明の第３の実施形態を示すもので、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。The third embodiment of the present invention is a cross-sectional view illustrating a process of assembling a joint total assembly by inserting a shaft into the joint sub-assembly. 本発明の第４の実施形態を示すもので、外輪に内部部品（カセット）を組み込んで継手サブアッシーを組立てる工程を説明する断面図である。The 4th Embodiment of this invention is shown and it is sectional drawing explaining the process of incorporating an internal component (cassette) in an outer ring | wheel and assembling a joint subassembly. 本発明の第４の実施形態を示すもので、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。The 4th Embodiment of this invention is shown, It is sectional drawing explaining the process of inserting a shaft in a joint subassembly and assembling a joint total assembly. 本発明の第５の実施形態を示すもので、外輪に内部部品（カセット）を組み込んで継手サブアッシーを組立てる工程を説明する断面図である。The 5th Embodiment of this invention is shown, and it is sectional drawing explaining the process of incorporating an internal component (cassette) in an outer ring | wheel and assembling a joint subassembly. 本発明の第５の実施形態を示すもので、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。The 5th Embodiment of this invention is shown and it is sectional drawing explaining the process of inserting a shaft in a joint subassembly and assembling a joint total assembly. 本発明の第６の実施形態を示すもので、外輪に内部部品（カセット）を組み込んで継手サブアッシーを組立てる工程を説明する断面図である。The 6th Embodiment of this invention is shown, It is sectional drawing explaining the process of assembling a coupling subassembly by incorporating an internal component (cassette) in an outer ring | wheel. 本発明の第６の実施形態を示すもので、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。The 6th Embodiment of this invention is shown and it is sectional drawing explaining the process of inserting a shaft in a joint subassembly and assembling a joint total assembly. 従来の等速自在継手を示す断面図である。It is sectional drawing which shows the conventional constant velocity universal joint. 図１３において、継手サブアッシーにシャフトを挿嵌して継手総アッシーを組立てる工程を説明する断面図である。FIG. 14 is a cross-sectional view illustrating a process of assembling a joint total assembly by inserting a shaft into the joint sub-assembly in FIG. 13.

符号の説明Explanation of symbols

１ 摺動型等速自在継手（ＤＯＪ）
２ 外輪（外側継手部材）
１６、３６、４６、５６，６６ 内底面（外輪）
２６ 外輪面接触部位（テーパ面）
３７ 外輪面接触部位（曲面）
４７ 外輪線接触部位（曲面）
５７ 外輪線接触部位（テーパ面）
６７ 外輪面接触部位（テーパ面、曲面）
６８ テーパ面
６９ 曲面
３ 内輪（内輪）
１５、３４、４４、５４、６４ 奥側端面（内輪）
２５ 内輪面接触部位（テーパ面）
３５ 内輪面接触部位（曲面）
４５、５５ 内輪線接触部材（曲面）
６５ 内輪面接触部位（テーパ面、曲面）
６２ テーパ面
６３ 曲面
４ ボール
５ ケージ
１８ 球状内周面(ケージ)
１９ 球状外周面（ケージ）
２２ 奥側端面（ケージ）
６ 内部部品
７ トラック溝（外輪）
８ トラック溝（内輪）
９ シャフト（軸部材）
７３ 逃げ部 1 Sliding type constant velocity universal joint (DOJ)
2 Outer ring (outer joint member)
16, 36, 46, 56, 66 Inner bottom surface (outer ring)
26 Outer ring surface contact area (tapered surface)
37 Outer ring surface contact area (curved surface)
47 Outer ring contact area (curved surface)
57 Outer ring contact area (tapered surface)
67 Outer ring surface contact area (tapered surface, curved surface)
68 Tapered surface 69 Curved surface 3 Inner ring (Inner ring)
15, 34, 44, 54, 64 Back side end face (inner ring)
25 Inner ring surface contact area (tapered surface)
35 Inner ring surface contact area (curved surface)
45, 55 Inner ring contact member (curved surface)
65 Inner ring surface contact area (tapered surface, curved surface)
62 Tapered surface 63 Curved surface 4 Ball 5 Cage 18 Spherical inner peripheral surface (cage)
19 Spherical outer peripheral surface (cage)
22 Back end face (cage)
6 Internal parts 7 Track groove (outer ring)
8 Track groove (inner ring)
9 Shaft (shaft member)
73 escape

Claims (10)

一端に開口部を有する有底筒状をなし、内周面に複数のトラック溝が形成された外側継手部材と、外周面に前記外側継手部材のトラック溝と対向する複数のトラック溝が形成された軸方向移動可能な内側継手部材と、前記外側継手部材のトラック溝と前記内側継手部材のトラック溝との間に介在されたボールと、前記外側継手部材と前記内側継手部材との間に配置され、前記ボールを保持するケージとを備え、前記内側継手部材の軸孔に軸部材が挿嵌される摺動型等速自在継手であって、
前記外側継手部材の内底面と、その外側継手部材の内底面に対向する前記内側継手部材の奥側端面とを前記軸部材の挿入時に面接触で当接可能にしたことを特徴とする摺動型等速自在継手。 An outer joint member having a bottomed cylindrical shape having an opening at one end and having a plurality of track grooves formed on the inner peripheral surface, and a plurality of track grooves facing the track grooves of the outer joint member are formed on the outer peripheral surface. An axially movable inner joint member, a ball interposed between the track groove of the outer joint member and the track groove of the inner joint member, and the outer joint member and the inner joint member. And a cage that holds the ball, and is a sliding type constant velocity universal joint in which a shaft member is inserted into a shaft hole of the inner joint member,
Sliding characterized in that the inner bottom surface of the outer joint member and the inner end surface of the inner joint member facing the inner bottom surface of the outer joint member can be contacted by surface contact when the shaft member is inserted. Type constant velocity universal joint. 前記内側継手部材の奥側端面の面接触部位を前記外側継手部材の内底面の面接触部位と合致した形状としたことを特徴とする請求項１に記載の摺動型等速自在継手。   2. The sliding type constant velocity universal joint according to claim 1, wherein a surface contact portion of an inner side end surface of the inner joint member has a shape that matches a surface contact portion of an inner bottom surface of the outer joint member. 前記外側継手部材の内底面の面接触部位と前記内側継手部材の奥側端面の面接触部位をテーパ面としたことを特徴とする請求項１又は２に記載の摺動型等速自在継手。   The sliding type constant velocity universal joint according to claim 1 or 2, wherein a surface contact portion of an inner bottom surface of the outer joint member and a surface contact portion of a rear end surface of the inner joint member are tapered surfaces. 前記外側継手部材の内底面の面接触部位と前記内側継手部材の奥側端面の面接触部位を曲面としたことを特徴とする請求項１又は２に記載の摺動型等速自在継手。   The sliding type constant velocity universal joint according to claim 1 or 2, wherein a surface contact portion of the inner bottom surface of the outer joint member and a surface contact portion of the inner side end surface of the inner joint member are curved surfaces. 一端に開口部を有する有底筒状をなし、内周面に複数のトラック溝が形成された外側継手部材と、外周面に前記外側継手部材のトラック溝と対向する複数のトラック溝が形成された軸方向移動可能な内側継手部材と、前記外側継手部材のトラック溝と前記内側継手部材のトラック溝との間に介在されたボールと、前記外側継手部材と前記内側継手部材との間に配置され、前記ボールを保持するケージとを備え、前記内側継手部材の軸孔に軸部材が挿嵌される摺動型等速自在継手であって、
前記外側継手部材の内底面と、その外側継手部材の内底面に対向する前記内側継手部材の奥側端面とを前記軸部材の挿入時に線接触で当接可能にしたことを特徴とする摺動型等速自在継手。 An outer joint member having a bottomed cylindrical shape having an opening at one end and having a plurality of track grooves formed on the inner peripheral surface, and a plurality of track grooves facing the track grooves of the outer joint member are formed on the outer peripheral surface. An axially movable inner joint member, a ball interposed between the track groove of the outer joint member and the track groove of the inner joint member, and the outer joint member and the inner joint member. And a cage that holds the ball, and is a sliding type constant velocity universal joint in which a shaft member is inserted into a shaft hole of the inner joint member,
Sliding characterized in that the inner bottom surface of the outer joint member and the inner end surface of the inner joint member facing the inner bottom surface of the outer joint member can be contacted by line contact when the shaft member is inserted. Type constant velocity universal joint. 前記外側継手部材の内底面の線接触部位と前記内側継手部材の奥側端面の線接触部位を曲面としたことを特徴とする請求項５に記載の摺動型等速自在継手。   6. The sliding type constant velocity universal joint according to claim 5, wherein the line contact part on the inner bottom surface of the outer joint member and the line contact part on the inner side end surface of the inner joint member are curved surfaces. 前記外側継手部材の内底面の線接触部位と前記内側継手部材の奥側端面の線接触部位のうち、一方をテーパ面とし、他方を曲面としたことを特徴とする請求項５に記載の摺動型等速自在継手。   6. The slide according to claim 5, wherein one of the line contact portion on the inner bottom surface of the outer joint member and the line contact portion on the back end face of the inner joint member is a tapered surface and the other is a curved surface. Dynamic constant velocity universal joint. 前記外側継手部材の内底面の線接触部位を径方向に対して外輪開口部側に傾斜させたテーパ面とし、前記内側継手部材の奥側端面の線接触部位を曲面としたことを特徴とする請求項７に記載の摺動型等速自在継手。   The line contact portion on the inner bottom surface of the outer joint member is a tapered surface inclined toward the outer ring opening with respect to the radial direction, and the line contact portion on the back end surface of the inner joint member is a curved surface. The sliding type constant velocity universal joint according to claim 7. 前記軸部材の先端部を前記内側継手部材の奥側端面より突出させ、前記外側継手部材の内底面に前記軸部材の先端部の逃げ部を形成したことを特徴とする請求項１〜８のいずれか一項に記載の摺動型等速自在継手。   The front end portion of the shaft member is projected from the back end surface of the inner joint member, and a relief portion of the front end portion of the shaft member is formed on the inner bottom surface of the outer joint member. The sliding-type constant velocity universal joint as described in any one of Claims. 前記ケージは、前記外側継手部材の内周面と摺接する球状外周面と、前記内側継手部材の外周面と摺接する球状内周面とを有し、前記ケージの球状内周面の軸方向中心を前記ケージの球状外周面の軸方向中心よりも奥側としたことを特徴とする請求項１〜９の何れか一項に記載の摺動型等速自在継手。   The cage has a spherical outer peripheral surface that is in sliding contact with the inner peripheral surface of the outer joint member, and a spherical inner peripheral surface that is in sliding contact with the outer peripheral surface of the inner joint member, and the axial center of the spherical inner peripheral surface of the cage The sliding type constant velocity universal joint according to any one of claims 1 to 9, characterized in that the inner side of the spherical outer peripheral surface of the cage is located behind the axial center.
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