JP5623232B2 - Connection structure for constant velocity universal joints - Google Patents

Connection structure for constant velocity universal joints Download PDF

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JP5623232B2
JP5623232B2 JP2010232411A JP2010232411A JP5623232B2 JP 5623232 B2 JP5623232 B2 JP 5623232B2 JP 2010232411 A JP2010232411 A JP 2010232411A JP 2010232411 A JP2010232411 A JP 2010232411A JP 5623232 B2 JP5623232 B2 JP 5623232B2
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joint
flange
adapter
constant velocity
velocity universal
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JP2012087820A (en
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英樹 近藤
英樹 近藤
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Ntn株式会社
Ntn株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/02Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal 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
    • F16D3/22Universal 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

Description

本発明は、等速自在継手用連結構造に関する。 The present invention relates to a connection structure for a constant velocity universal joint.

各種産業機械の動力伝達機構として適用される等速自在継手(固定式等速自在継手)においては、従動側ワークと接続される。従動側ワークとして、圧延ロール、搬送ロール、等の各種ロールであって、このロールのロール軸を固定式等速自在継手に接続(連結)するものがある(特許文献1)。   In a constant velocity universal joint (fixed constant velocity universal joint) applied as a power transmission mechanism of various industrial machines, it is connected to a driven work. As the driven work, there are various rolls such as a rolling roll and a transport roll, and the roll shaft of this roll is connected (coupled) to a fixed type constant velocity universal joint (Patent Document 1).

このような特許文献1に記載のものでは、等速自在継手と、従動側ワークとの分離を容易にするため、図6に示すように、等速自在継手に、連結構造Mを介して図示省略のローラ軸を着脱自在に連結するものである。   In order to facilitate the separation of the constant velocity universal joint and the driven-side workpiece, the one described in Patent Document 1 is illustrated in FIG. 6 with a constant velocity universal joint through a connection structure M as shown in FIG. The omitted roller shaft is detachably connected.

この図6の等速自在継手Tは、内径面3にトラック溝4が形成された外側継手部材5と、外径面6にトラック溝7が形成された内側継手部材8と、外側継手部材5のトラック溝4と内側継手部材8のトラック溝7との間に介在してトルクを伝達するトルク伝達部材としての複数のトルク伝達ボール9と、外側継手部材5の内径面3と内側継手部材8の外径面6との間に介在してボール9を保持するケージ(保持器)10とを備える。   The constant velocity universal joint T of FIG. 6 includes an outer joint member 5 having a track groove 4 formed on the inner diameter surface 3, an inner joint member 8 having a track groove 7 formed on the outer diameter surface 6, and the outer joint member 5. A plurality of torque transmitting balls 9 as torque transmitting members interposed between the track grooves 4 of the inner joint member 8 and the track grooves 7 of the inner joint member 8, the inner diameter surface 3 of the outer joint member 5, and the inner joint member 8. And a cage (retainer) 10 that holds the ball 9 interposed between the outer diameter surface 6 and the outer diameter surface 6.

また、内側継手部材8の内径面にはスプライン穴11が設けられ、このスプライン穴11にシャフト12の端部のスプライン軸13が嵌合している。そして、この等速自在継手Tの反ロール軸側の開口部は、ブーツ固定板22に加締られたブーツ14にて密封されている。   A spline hole 11 is provided on the inner diameter surface of the inner joint member 8, and a spline shaft 13 at the end of the shaft 12 is fitted in the spline hole 11. The opening on the side opposite to the roll shaft of the constant velocity universal joint T is sealed with a boot 14 swaged to a boot fixing plate 22.

等速自在継手Tには、フランジ部材19を介してカップリング18が連結されている。カップリング18は、内径面にスプライン穴15が形成された筒体部16と、等速自在継手T側の外鍔部17とを備える。フランジ部材19は、短円筒状の本体部19aと、アダプタ側の外鍔部19aとを備える。また、本体部19aにはねじ孔20が設けられ、このねじ孔20に連結用のボルト部材21によって締結される。この場合、反ロール軸側には、ブーツ固定板22が配置され、このブーツ固定板22、及び外側継手部材5に前記ボルト部材21が挿入されてねじ孔20に締結される。これによって、ブーツ固定板22と外側継手部材5とフランジ部材19とが一体化される。また、カップリング18の外鍔部17とフランジ部材19の外鍔部19aを結合し、ボルト・ナット締結23によって、一体化されている。   A coupling 18 is connected to the constant velocity universal joint T via a flange member 19. The coupling 18 includes a cylindrical body portion 16 having a spline hole 15 formed on the inner diameter surface and an outer flange portion 17 on the constant velocity universal joint T side. The flange member 19 includes a short cylindrical main body portion 19a and an outer flange portion 19a on the adapter side. The main body 19a is provided with a screw hole 20, and is fastened to the screw hole 20 by a connecting bolt member 21. In this case, a boot fixing plate 22 is disposed on the side opposite to the roll shaft, and the bolt member 21 is inserted into the boot fixing plate 22 and the outer joint member 5 and fastened to the screw hole 20. Thereby, the boot fixing plate 22, the outer joint member 5, and the flange member 19 are integrated. Further, the outer flange portion 17 of the coupling 18 and the outer flange portion 19 a of the flange member 19 are joined and integrated by bolt / nut fastening 23.

ロール軸は、連結構造Mを有するアダプタ装置24を介して等速自在継手Tに接続される。アダプタ装置24は、基端部に鍔部27が設けられる軸部26と、この軸部26の鍔部27に連結されるフランジ部28とを備える。軸部26がスプライン軸25を有する。フランジ部28は、内径面にはキー溝29が形成された本体部30、この本体部30の軸部26側に設けられる外鍔部31とを備える。この場合、フランジ部28の外鍔部31の端面と鍔部27の端面はインロー嵌合され、ボルト・ナット締結32によって、一体化されている。   The roll shaft is connected to the constant velocity universal joint T through an adapter device 24 having a coupling structure M. The adapter device 24 includes a shaft portion 26 provided with a flange portion 27 at a base end portion, and a flange portion 28 connected to the flange portion 27 of the shaft portion 26. The shaft portion 26 has a spline shaft 25. The flange portion 28 includes a main body portion 30 having a key groove 29 formed on the inner diameter surface, and an outer flange portion 31 provided on the shaft portion 26 side of the main body portion 30. In this case, the end surface of the outer flange portion 31 of the flange portion 28 and the end surface of the flange portion 27 are fitted together and integrated by bolt and nut fastening 32.

また、軸部26がカップリング18の筒体部16に嵌入され、軸部26側のスプライン軸25とカップリング18の筒体部16のスプライン穴15とが嵌合する。そして、この嵌合状態では、抜け止め機構36にて軸部26のカップリング18の筒体部16からの抜けを規制している。抜け止め機構36は、軸部26のスプライン軸25に形成される周方向溝33と、カップリング18の筒体部16に連結されるボルト部材35とを備える。このため、カップリング18の筒体部16にボルト部材35が連結されることによって、ボルト部材35の軸先端部が周方向溝33に嵌合して、軸部26のフランジ部材19からの抜けを規制している。   Further, the shaft portion 26 is fitted into the cylindrical portion 16 of the coupling 18, and the spline shaft 25 on the shaft portion 26 side and the spline hole 15 of the cylindrical portion 16 of the coupling 18 are fitted. In this fitted state, the retaining mechanism 36 restricts the shaft portion 26 from coming off the coupling body 18 from the cylindrical body portion 16. The retaining mechanism 36 includes a circumferential groove 33 formed in the spline shaft 25 of the shaft portion 26 and a bolt member 35 connected to the cylindrical body portion 16 of the coupling 18. For this reason, when the bolt member 35 is connected to the cylindrical body portion 16 of the coupling 18, the shaft tip portion of the bolt member 35 is fitted into the circumferential groove 33, and the shaft portion 26 is detached from the flange member 19. Is regulated.

特開平8−145072号公報JP-A-8-145072

前記図6に示すような従来のものでは、スプライン軸25が形成された軸部26と、この軸部26の鍔部27に連結されるフランジ部28とを備えたアダプタ装置24を必要として、部品点数が多く、コスト高となる。   In the prior art as shown in FIG. 6, an adapter device 24 including a shaft portion 26 on which the spline shaft 25 is formed and a flange portion 28 connected to the flange portion 27 of the shaft portion 26 is required. The number of parts is large and the cost is high.

また、アダプタ装置24をカップリング18に連結する場合、まず、アダプタ装置24の軸部26をカップリング18の筒体部16に嵌入する必要がある。この際、軸部26のスプライン軸25をカップリング18の筒体部16のスプライン穴15に嵌合させることになる。すなわち、軸部26のスプライン軸25の山部開始端(軸部の先端側の端)を、カップリング18のスプライン穴15の谷部開始端(カップリング18の開口端)に対応させるとともに、軸部26のスプライン軸25の谷部開始端をカップリング18の筒体部16のスプライン穴15の山部開始端に対応させ、この状態で、軸部26をカップリング18の筒体部16に対して挿入していくことになる。   When connecting the adapter device 24 to the coupling 18, first, the shaft portion 26 of the adapter device 24 needs to be fitted into the cylindrical body portion 16 of the coupling 18. At this time, the spline shaft 25 of the shaft portion 26 is fitted into the spline hole 15 of the cylindrical body portion 16 of the coupling 18. That is, the peak portion start end (end on the tip end side of the shaft portion) of the spline shaft 25 of the shaft portion 26 is made to correspond to the valley start end (opening end of the coupling 18) of the spline hole 15 of the coupling 18, and The trough start end of the spline shaft 25 of the shaft portion 26 is made to correspond to the crest start end of the spline hole 15 of the cylindrical portion 16 of the coupling 18, and in this state, the shaft portion 26 is connected to the cylindrical portion 16 of the coupling 18. Will be inserted.

しかしながら、軸部26のスプライン軸25の山部開始端およびカップリング18のスプライン穴15の山部嵌合端は、それぞれ面を持つ形状である。このため、軸部26をカップリング18に対して挿入していく際には、精度のよい位相合わせを行う必要がある。すなわち、精度のよい位相合わせが行われていなければ、軸部26のスプライン軸25の山部開始端とカップリング18のスプライン穴15の山部開始端とがお互いに干渉して、スムーズな嵌合は困難になる。   However, the peak portion start end of the spline shaft 25 of the shaft portion 26 and the peak portion fitting end of the spline hole 15 of the coupling 18 have shapes each having a surface. For this reason, when inserting the axial part 26 with respect to the coupling 18, it is necessary to perform an accurate phase alignment. That is, if accurate phase alignment is not performed, the crest start end of the spline shaft 25 of the shaft portion 26 and the crest start end of the spline hole 15 of the coupling 18 interfere with each other, and a smooth fit is achieved. It becomes difficult.

また、等速自在継手Tへのシャフト12の嵌入も、シャフト12のスプライン軸13と、内側継手部材8のスプライン穴11とを嵌合させることになる。このため、精度のよい位相合わせが行われていなければ、シャフト12のスプライン軸13と内側継手部材8のスプライン穴11とのスムーズな嵌合は困難になる。   In addition, the shaft 12 is fitted into the constant velocity universal joint T so that the spline shaft 13 of the shaft 12 and the spline hole 11 of the inner joint member 8 are fitted. For this reason, unless accurate phase alignment is performed, smooth fitting between the spline shaft 13 of the shaft 12 and the spline hole 11 of the inner joint member 8 becomes difficult.

さらに、図6に示す連結構造Mでは、アダプタ装置24をカップリング18から取り外す場合、ボルト部材35を緩めて、カップリング18から軸部26を引き抜く必要がある。この場合の引き抜き量は、図6に示すように、Laであって、カップリング18のほぼ軸方向長さである。すなわち、移動量が大となって、組立・分離作業時における作業性に劣るとともに、大きなスペースを必要としていた。   Further, in the connection structure M shown in FIG. 6, when the adapter device 24 is removed from the coupling 18, it is necessary to loosen the bolt member 35 and pull out the shaft portion 26 from the coupling 18. As shown in FIG. 6, the drawing amount in this case is La, which is the length in the axial direction of the coupling 18. That is, the amount of movement is large, the workability during assembly / separation work is inferior, and a large space is required.

本発明は、上記課題に鑑みて、部品点数を減らすことができ、かつ、組み付けを簡単に行うことができる等速自在継手用連結構造を提供する。   In view of the above problems, the present invention provides a connection structure for a constant velocity universal joint that can reduce the number of parts and can be easily assembled.

本発明の等速自在継手用連結構造は、産業機械の動力伝達機構として使用される等速自在継手と、従動側ワークである被連結体としての軸とをアダプタ装置を介して着脱可能に連結するための等速自在継手用連結構造であって、前記アダプタ装置は、外径面にフランジ部を有し、前記が嵌入されて連結される筒状のアダプタを備え、前記等速自在継手の外側継手部材に設けられる鍔部と、アダプタのフランジ部とのいずれか一方の外周面に、周方向全周にわたって形成される第1の凹凸歯を設け、かつ、他方の相手側対向端面に凸部が軸方向に伸びて周方向全周にわたって形成される第2の凹凸歯を設け、前記外側継手部材に設けられる鍔部とアダプタのフランジとを重ね合わせ、第1の凹凸歯と第2の凹凸歯を嵌合させて、外側継手部材の鍔部とアダプタのフランジ部とを結合状態とするものである。 The connection structure for constant velocity universal joints of the present invention connects a constant velocity universal joint used as a power transmission mechanism of an industrial machine and a shaft as a connected body , which is a driven work, in a detachable manner via an adapter device. The above-mentioned adapter device includes a cylindrical adapter having a flange portion on an outer diameter surface and connected by fitting the shaft , and the constant velocity universal joint. The outer peripheral surface of either the flange portion of the outer joint member or the flange portion of the adapter is provided with a first concavo-convex tooth formed over the entire circumference in the circumferential direction, and the other opposing end surface Protruding portions extend in the axial direction and are provided with second concave and convex teeth formed over the entire circumference, and the flanges of the outer joint members and the flanges of the adapter are overlapped to form the first concave and convex teeth and the second The outer joint member And a flange portion of the flange portion and the adapter is intended to be coupled state.

本発明の等速自在継手用連結構造によれば、アダプタには被連結体が嵌入されて連結される。また、外側継手部材の鍔部とアダプタのフランジ部とを結合し、第1の凹凸歯と第2の凹凸歯が嵌合される。このため、外側継手部材とアダプタとのトルク伝達が凹凸歯を介して行われることになる。 According to the connection structure for a constant velocity universal joint of the present invention, the connected body is fitted into the adapter and connected. Moreover, the collar part of an outer joint member and the flange part of an adapter are couple | bonded, and a 1st uneven | corrugated tooth and a 2nd uneven | corrugated tooth are fitted. For this reason, torque transmission between the outer joint member and the adapter is performed via the uneven teeth .

また、外周面にスプライン部が形成された軸部と、この軸部の鍔部に連結されるフランジ部とを備えたアダプタ装置を必要とせず、部品点数の減少を図ることができる。しかも、外側継手部材とアダプタとの連結は、外側継手部材の鍔部とアダプタのフランジ部とを結合するので、等速自在継手側とアダプタ側との分離時の移動量を小さく設定できる。   Further, it is not necessary to provide an adapter device including a shaft portion having a spline portion formed on the outer peripheral surface and a flange portion connected to the flange portion of the shaft portion, and the number of parts can be reduced. In addition, since the outer joint member and the adapter are connected to each other by joining the flange portion of the outer joint member and the flange portion of the adapter, the amount of movement at the time of separation between the constant velocity universal joint side and the adapter side can be set small.

第1の凹凸歯と第2の凹凸歯とは、前記のように構成することによって、外側継手部材の鍔部とアダプタのフランジ部との重ね合わせによって、いわゆるスプライン結合することができる。このため、従来のように、筒部の内径面に軸方向に沿って延びる凹凸条を設ける必要がない。 By configuring the first concavo-convex teeth and the second concavo-convex teeth as described above, so-called spline coupling can be performed by overlapping the flange portion of the outer joint member and the flange portion of the adapter. For this reason, it is not necessary to provide the uneven | corrugated strip extended along an axial direction in the internal diameter surface of a cylinder part like the past.

第1の凹凸歯嵌合開始部と第2の凹凸歯の嵌合開始部との少なくともいずれか一方に、面取部を設けたものが好ましい。 What provided the chamfering part in at least any one of the fitting start part of a 1st uneven tooth and a 2nd uneven tooth is preferable.

第1の凹凸歯と第2の凹凸歯とはそれぞれ熱処理が施されているものであっても、第1の凹凸歯と第2の凹凸歯とはそれぞれ加工後に表面処理が施されているものであってもよい。ここで、熱処理として、調質処理や焼入れ等である。調質処理とは、焼入れ後、比較的高い温度(例えば、400℃以上)に焼戻して、トルースタイト又はソルバイト組織にする処理をいう。すなわち、調質とは鋼の結晶粒子を微細にして鋼質を調整し、強じん性を実質的に向上させる操作をいう。表面処理とはメッキ等であり、また、固体潤滑剤表面処理を行ってもよい。固体潤滑剤表面処理とは固体潤滑処理被膜を成形することであり、固体潤滑処理被膜とは、二硫化モリブデン、黒鉛(グラファイト)、フッ素樹脂(四フッ化エチレン等)、二硫化タングステン、金属酸化物などの固体潤滑剤を一種類または数種類、各種の有機樹脂に分散させ塗料状にし、これをコーティングして得られる乾燥被膜である。固体潤滑処理被膜は、耐摩耗性、耐熱性、耐腐食性に優れる。 Even if the first uneven tooth and the second uneven tooth are each heat-treated, the first uneven tooth and the second uneven tooth are each subjected to surface treatment after processing. It may be. Here, the heat treatment includes tempering treatment and quenching. The tempering treatment refers to a treatment that is tempered to a relatively high temperature (for example, 400 ° C. or higher) after quenching to form a troostite or sorbite structure. In other words, refining refers to an operation of adjusting the steel quality by refining the crystal grains of the steel to substantially improve the toughness. The surface treatment is plating or the like, and solid lubricant surface treatment may be performed. Solid lubricant surface treatment is to form a solid lubricant treatment coating. Solid lubricant treatment coating means molybdenum disulfide, graphite (graphite), fluororesin (such as tetrafluoroethylene), tungsten disulfide, metal oxidation It is a dry film obtained by dispersing a solid lubricant such as a product in one or several kinds of various organic resins to form a paint and coating it. The solid lubricant film is excellent in wear resistance, heat resistance, and corrosion resistance.

外側継手部材の鍔部とアダプタのフランジ部とがボルト・ナット締結にて結合されるものであってもよい。このように、ボルト・ナット締結にて結合することによって、外側継手部材とアダプタとの安定した結合が可能となる。しかしながら、外側継手部材とアダプタとのトルク伝達はスプラインにて行うので、ボルト・ナット締結のみでもってトルク伝達を行う場合に比べて、ボルト・ナット締結の結合部位を少なくすることができる。このため、ボルト・ナット締結の結合部位(締結部位)は、周方向に沿って所定ピッチで2〜3個とすることができる。   The flange part of an outer joint member and the flange part of an adapter may be couple | bonded by bolt and nut fastening. In this way, the outer joint member and the adapter can be stably coupled by coupling with bolts and nuts. However, since torque transmission between the outer joint member and the adapter is performed by a spline, it is possible to reduce the number of bolt / nut fastening joints compared to the case where torque transmission is performed only by bolt / nut fastening. For this reason, the coupling | bond part (fastening part) of a bolt and nut fastening can be made into 2-3 pieces with a predetermined pitch along the circumferential direction.

外側継手部材は、内側継手部材と、トルク伝達部材と、トルク伝達部材を保持する保持器とを含む内部部品が収容される本体部と、この本体部とは別部材にて構成されてこの本体部に固着される前記鍔部とを備えるものが好ましい。   The outer joint member is composed of a main body portion that contains an inner joint member, a torque transmission member, and a cage that holds the torque transmission member, and a main body portion that is separate from the main body portion. What is provided with the said collar part fixed to a part is preferable.

このように、外側継手部材を本体部と鍔部とで構成することによって、外側継手部材を形成する場合、種々の大きさの鍔部を用いることができる。このため、継手側スプラインについて、その外径、歯数、幅寸法(継手軸方向長さ)、硬度等を種々相違させることができる。   Thus, when forming an outer joint member by comprising an outer joint member with a main-body part and a collar part, the collar part of various magnitude | sizes can be used. For this reason, about a joint side spline, the outer diameter, the number of teeth, a width dimension (joint axial direction length), hardness, etc. can be varied variously.

本発明の等速自在継手用連結構造によれば、外側継手部材とアダプタとのトルク伝達が嵌合する凹凸歯を介して行われることになり、被連結体(ロール軸等)と外側継手部材とのトルク伝達を安定して行うことができる。しかも、部品点数の減少を図ることができ、組立工数の減少を図って、生産性の向上及びコスト低減化を達成できる。さらに、等速自在継手側とアダプタ側との分離時の移動量を小さく設定でき、等速自在継手自身の伸縮によって、被連結体との着脱が可能となる。 According to the connecting structure for a constant velocity universal joint of the present invention, torque transmission between the outer joint member and the adapter is performed via the concave and convex teeth to be fitted , and the connected body (roll shaft, etc.) and the outer joint member. Torque transmission can be performed stably. In addition, the number of parts can be reduced, the number of assembly steps can be reduced, and productivity can be improved and cost can be reduced. Furthermore, the movement amount at the time of separation between the constant velocity universal joint side and the adapter side can be set small, and the constant velocity universal joint itself can be attached to and detached from the connected body by expansion and contraction.

前記第1の凹凸歯は、外側継手部材に設けられる鍔部と、アダプタのフランジ部とのいずれか一方の外周面に周方向全周にわたって形成されるので、従来のように、筒部の内径面に軸方向に沿って延びる凹凸条を設ける必要がないので、加工性の簡略化を図ることができる。 Since the first concavo-convex teeth are formed on the outer peripheral surface of one of the flange provided on the outer joint member and the flange portion of the adapter over the entire circumference in the circumferential direction , Since it is not necessary to provide uneven surfaces extending along the axial direction on the surface, it is possible to simplify the workability.

凹凸歯の嵌合開始部に面取部を設けたものでは、凹凸歯同士を嵌合させる際に、面取部がガイドとなって、滑らかな結合が可能となる。しかも、嵌合時に歯部のエッジが衝突して損傷することがなくなって、耐用性に優れる。 In the case where the chamfered portion is provided at the fitting start portion of the concavo-convex teeth , when the concavo-convex teeth are fitted together, the chamfered portion serves as a guide to enable smooth coupling. In addition, the edges of the tooth portions do not collide and are damaged when fitted, and the durability is excellent.

第1の凹凸歯と第2の凹凸歯とはそれぞれ熱処理や表面処理を行うことによって、耐摩耗性に優れたものとなる。 The first concavo-convex teeth and the second concavo-convex teeth are excellent in wear resistance by performing heat treatment and surface treatment, respectively.

ボルト・ナット締結にて結合することによって、外側継手部材とアダプタとの安定した結合が可能となる。しかも、ボルト・ナット締結の結合部位は、周方向に沿って所定ピッチで2〜3個とすることができ、ボルト・ナット締結数及びボルト・ナット締結作業の減少を図ることができ、組立作業性の向上を図ることができる。すなわち、従来のボルト締結によるトルク伝達仕様に比べ、衝撃入力によるボルトの緩み、せん断等の懸念を解消できる適用性が高い仕様となる。   By connecting with bolts and nuts, the outer joint member and the adapter can be stably connected. Moreover, the number of bolts and nuts to be joined can be two to three at a predetermined pitch along the circumferential direction, and the number of bolts and nuts to be fastened and the number of bolts and nuts to be fastened can be reduced. It is possible to improve the performance. That is, compared with the conventional torque transmission specification by bolt fastening, it becomes a specification with high applicability that can eliminate concerns such as loosening and shearing of the bolt due to impact input.

外側継手部材を本体部と鍔部とで構成することによって、凹凸歯について、その外径、歯数、幅寸法(継手軸方向長さ)、硬度等を種々相違させることができる。これによって、負荷容量を容易にコントロールすることができる。 By configuring the outer joint member with the main body portion and the flange portion, the outer diameter, the number of teeth, the width dimension (length in the joint axial direction), the hardness, and the like of the uneven teeth can be varied. Thereby, the load capacity can be easily controlled.

本発明の実施形態を示す等速自在継手用連結構造の断面図である。It is sectional drawing of the connection structure for constant velocity universal joints which shows embodiment of this invention. 前記図1に示す等速自在継手用連結構造の側面図である。It is a side view of the connection structure for constant velocity universal joints shown in the said FIG. 前記図1に示す等速自在継手用連結構造の要部拡大断面図である。It is a principal part expanded sectional view of the connection structure for constant velocity universal joints shown in the said FIG. 等速自在継手の外側継手部材のフランジ部を示す側面図である。It is a side view which shows the flange part of the outer joint member of a constant velocity universal joint. 等速自在継手の外側継手部材のフランジ部の変形例を示す側面図である。It is a side view which shows the modification of the flange part of the outer joint member of a constant velocity universal joint. 従来の等速自在継手用連結構造の断面図である。It is sectional drawing of the connection structure for conventional constant velocity universal joints.

以下本発明の実施の形態を図1〜図5に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS.

図1に本発明に係る等速自在継手用連結構造Mを示す。この連結構造Mは、等速自在継手Tと、従動側ワーク(被連結体)としての図示省略のロール軸とを連結するものである。ロール軸とは、圧延ロール、搬送ロール、等の各種ロールである。   FIG. 1 shows a connecting structure M for a constant velocity universal joint according to the present invention. This connection structure M connects the constant velocity universal joint T and a roll shaft (not shown) as a driven side work (connected body). A roll axis | shaft is various rolls, such as a rolling roll and a conveyance roll.

等速自在継手Tは、内径面53にトラック溝54が形成された外側継手部材55と、外径面56にトラック溝57が形成された内側継手部材58と、外側継手部材55のトラック溝54と内側継手部材58のトラック溝57との間に介在してトルクを伝達するトルク伝達部材としての複数のトルク伝達ボール59と、外側継手部材55の内径面53と内側継手部材58の外径面56との間に介在してボール59を保持するケージ(保持器)60とを備える。   The constant velocity universal joint T includes an outer joint member 55 having a track groove 54 formed on the inner diameter surface 53, an inner joint member 58 having a track groove 57 formed on the outer diameter surface 56, and the track groove 54 of the outer joint member 55. A plurality of torque transmitting balls 59 as torque transmitting members that are interposed between the inner joint member 58 and the track groove 57 of the inner joint member 58, an inner diameter surface 53 of the outer joint member 55, and an outer diameter surface of the inner joint member 58. 56 and a cage (retainer) 60 for holding the ball 59.

また、外側継手部材55は、内径面53にトラック溝54が形成された本体部55aと、この本体部55aに固着される鍔部55bとからなる。本体部55aは、マウス部61と、このマウス部61から突設される小径短円筒部62とからなる。また、鍔部55bは中心孔63を有する円盤体からなり、この中心孔63が小径短円筒部62の反マウス部側の端部に嵌合されている。この場合、鍔部55bの中心孔63は、大径部63aと小径部63bからなり、大径部63aが小径短円筒部62の反マウス部側の端部に嵌合され、大径部63aと小径部63bとの間の端面63cが小径短円筒部62の端面62aに当接した状態となる。そして、この鍔部55bと本体部55aとは、溶接にて一体化される。図1において、Bは溶接ビードである。   The outer joint member 55 includes a main body portion 55a having a track groove 54 formed on the inner diameter surface 53, and a flange portion 55b fixed to the main body portion 55a. The main body portion 55 a includes a mouse portion 61 and a small-diameter short cylindrical portion 62 projecting from the mouse portion 61. The flange portion 55b is formed of a disc body having a center hole 63, and the center hole 63 is fitted to the end of the small-diameter short cylindrical portion 62 on the side opposite to the mouse. In this case, the center hole 63 of the flange portion 55b is composed of a large diameter portion 63a and a small diameter portion 63b, and the large diameter portion 63a is fitted to the end of the small diameter short cylindrical portion 62 on the side opposite to the mouse portion, and the large diameter portion 63a. The end surface 63c between the small diameter portion 63b and the small diameter portion 63b is in contact with the end surface 62a of the small diameter short cylindrical portion 62. And this collar part 55b and the main-body part 55a are integrated by welding. In FIG. 1, B is a weld bead.

内側継手部材58の内径面には雌スプライン68が設けられ、この雌スプライン68にシャフト69の端部の雄スプライン65が嵌合している。また、雄スプライン65には、止め輪等のストッパS1、S2が配置されている。このように、外側継手部材58は、内側継手部材58と、トルク伝達部材としてのボール59と、ケージ(保持器)56とを含む内部部品100がその本体部55aに収容される。   A female spline 68 is provided on the inner diameter surface of the inner joint member 58, and the male spline 65 at the end of the shaft 69 is fitted to the female spline 68. The male spline 65 is provided with stoppers S1, S2 such as retaining rings. As described above, the outer joint member 58 accommodates the inner part 100 including the inner joint member 58, the ball 59 as a torque transmission member, and the cage (retainer) 56 in the main body portion 55a.

そして、この等速自在継手Tの反ロール軸側の開口部はブーツ64にて密封されている。ブーツ64は、大径部64aと、小径部64bと、大径部64aと小径部64bとの間の蛇腹部64cとからなる。大径部64aが外側継手部材55のマウス部61に外嵌され、この状態で大径部64aがブーツバンド66にて締め付けられる。また、小径部64bがシャフト69のブーツ装着部67に外嵌され、この状態で小径部64bがブーツバンド66にて締め付けられる。   The opening on the opposite roll shaft side of the constant velocity universal joint T is sealed with a boot 64. The boot 64 includes a large diameter portion 64a, a small diameter portion 64b, and a bellows portion 64c between the large diameter portion 64a and the small diameter portion 64b. The large diameter portion 64 a is fitted on the mouth portion 61 of the outer joint member 55, and the large diameter portion 64 a is fastened by the boot band 66 in this state. Further, the small diameter portion 64 b is fitted on the boot mounting portion 67 of the shaft 69, and the small diameter portion 64 b is fastened by the boot band 66 in this state.

被連結体としての図示省略のロール軸は、アダプタ装置70を介して等速自在継手Tに連結される。アダプタ装置70は、内径面71にキー溝72が形成されたアダプタ73を有するものである。このアダプタ73は、内径面71にキー溝72が形成された筒状本体73aと、この筒状本体73aの継手側に設けられるフランジ部73bとからなる。   A roll shaft (not shown) as the connected body is connected to the constant velocity universal joint T via the adapter device 70. The adapter device 70 includes an adapter 73 having a key groove 72 formed on the inner diameter surface 71. The adapter 73 includes a cylindrical main body 73a having a key groove 72 formed on the inner diameter surface 71, and a flange portion 73b provided on the joint side of the cylindrical main body 73a.

この場合、等速自在継手Tの外側継手部材55とアダプタ73とは、スプライン嵌合75にて結合される。すなわち、図2と図3に示すように、外側継手部材55の鍔部55bの外径面に継手側スプライン76が形成されるとともに、アダプタ73のフランジ部73bにアダプタ側スプライン77が形成される。   In this case, the outer joint member 55 of the constant velocity universal joint T and the adapter 73 are coupled by a spline fitting 75. That is, as shown in FIGS. 2 and 3, the joint side spline 76 is formed on the outer diameter surface of the flange portion 55 b of the outer joint member 55, and the adapter side spline 77 is formed on the flange portion 73 b of the adapter 73. .

外側継手部材55の継手側スプライン76は、図4に示すように、鍔部55bの外径面に周方向全周にわたって形成される第1の凹凸歯78にて構成される。この場合、この第1の凹凸歯78は、この実施形態では、継手側に設けられるものであるので、継手側凹凸歯と呼ぶ場合がある。継手側凹凸歯78は鍔部55bの外径面に周方向に沿って凹歯78aと凸歯78bとが交互に形成されてなる。なお、鍔部55bには、後述するように、ボルト・ナット締結用の貫通孔80が周方向に沿って所定ピッチ(この場合、60度ピッチ)に6個配設されている。 As shown in FIG. 4, the joint-side spline 76 of the outer joint member 55 includes first uneven teeth 78 formed on the outer diameter surface of the flange portion 55 b over the entire circumference. In this case, the first uneven teeth 78, in this embodiment, since those provided on the joint side, may be referred to as coupling-side uneven teeth. The joint-side irregular teeth 78 are formed by alternately forming concave teeth 78a and convex teeth 78b along the circumferential direction on the outer diameter surface of the flange portion 55b. As will be described later, six through holes 80 for fastening bolts and nuts are arranged in the flange portion 55b at a predetermined pitch (in this case, a pitch of 60 degrees) along the circumferential direction.

アダプタ73のアダプタ側スプライン77は、フランジ部73bの継手側端面の外径側において周方向にわたって形成される第1の凹凸歯81にて構成される。この場合、この第2の凹凸歯81は、この実施形態では、アダプタ側に設けられるものであるので、アダプタ凹凸歯と呼ぶ場合がある。アダプタ側凹凸歯81はフランジ部73bの継手側端面に周方向に沿って凹歯81aと凸歯81bとが交互に形成されてなる。 The adapter-side spline 77 of the adapter 73 is configured by first uneven teeth 81 formed over the circumferential direction on the outer diameter side of the joint-side end face of the flange portion 73b. In this case, the second uneven tooth 81 is provided on the adapter side in this embodiment, and may be referred to as an adapter uneven tooth. The adapter side uneven teeth 81 are formed by alternately forming concave teeth 81a and convex teeth 81b along the circumferential direction on the joint side end face of the flange portion 73b.

このため、等速自在継手Tの鍔部55bとアダプタ73のフランジ部73bとを結合時、継手側スプライン76とアダプタ側スプライン77とが嵌合する。また、アダプタ73のフランジ部73bには、等速自在継手Tの鍔部55bの貫通孔80に対応する貫通孔85が設けられている。すなわち、貫通孔85は、周方向に沿って所定ピッチ(この場合、60度ピッチ)に6個配設されている。   Therefore, when the flange portion 55b of the constant velocity universal joint T and the flange portion 73b of the adapter 73 are coupled, the joint side spline 76 and the adapter side spline 77 are fitted. Further, a through hole 85 corresponding to the through hole 80 of the flange portion 55 b of the constant velocity universal joint T is provided in the flange portion 73 b of the adapter 73. That is, six through-holes 85 are arranged along the circumferential direction at a predetermined pitch (in this case, a pitch of 60 degrees).

そして、等速自在継手Tの鍔部55bとアダプタ73のフランジ部73bとを重ね合わせてスプライン嵌合させ、この状態で、鍔部55bの貫通孔80の軸心とフランジ部73bの貫通孔85の軸心とを一致させる。そして、対向している貫通孔80、85に、貫通孔85側からボルト部材96を挿通し、貫通孔80から突出したボルト部材96のねじ部にナット部材97を締結する。このように、等速自在継手Tの鍔部55bとアダプタ73のフランジ部73bとは、ボルト部材96とナット部材97とからなる固着具98にてボルト・ナット締結される。   Then, the flange portion 55b of the constant velocity universal joint T and the flange portion 73b of the adapter 73 are overlapped and spline-fitted, and in this state, the shaft center of the through hole 80 of the flange portion 55b and the through hole 85 of the flange portion 73b. To match the axis. Then, the bolt member 96 is inserted into the opposing through holes 80 and 85 from the through hole 85 side, and the nut member 97 is fastened to the threaded portion of the bolt member 96 protruding from the through hole 80. As described above, the flange portion 55 b of the constant velocity universal joint T and the flange portion 73 b of the adapter 73 are fastened with bolts and nuts by the fixing tool 98 including the bolt member 96 and the nut member 97.

これによって、等速自在継手Tの鍔部55bとアダプタ73のフランジ部73bとは、ボルト・ナット締結によって、連結することができる。また、アダプタ73の孔部に図示省略の被連結体としての図示省略のロール軸を嵌入し、このロール軸の外径面に設けられるキーをアダプタ73の孔部に設けられるキー溝72に嵌合させることになる。   Thereby, the flange part 55b of the constant velocity universal joint T and the flange part 73b of the adapter 73 can be connected by bolt and nut fastening. In addition, a roll shaft (not shown) as a coupled body (not shown) is inserted into the hole portion of the adapter 73, and a key provided on the outer diameter surface of the roll shaft is fitted into a key groove 72 provided in the hole portion of the adapter 73. Will be combined.

ところで、継手側スプライン76とアダプタ側スプライン77とはそれぞれ熱処理が施されているものであっても、継手側スプライン76とアダプタ側スプライン77とはそれぞれ加工後に表面処理が施されているものであってもよい。ここで、熱処理として、調質処理や焼入れ等である。調質処理とは、焼入れ後、比較的高い温度(例えば、400℃以上)に焼戻して、トルースタイト又はソルバイト組織にする処理をいう。すなわち、調質とは鋼の結晶粒子を微細にして鋼質を調整し、強じん性を実質的に向上させる操作をいう。表面処理とはメッキ等であり、また、固体潤滑剤表面処理を行ってもよい。固体潤滑剤表面処理とは固体潤滑処理被膜を成形することであり、固体潤滑処理被膜とは、二硫化モリブデン、黒鉛(グラファイト)、フッ素樹脂(四フッ化エチレン等)、二硫化タングステン、金属酸化物などの固体潤滑剤を一種類または数種類、各種の有機樹脂に分散させ塗料状にし、これをコーティングして得られる乾燥被膜である。固体潤滑処理被膜は、耐摩耗性、耐熱性、耐腐食性に優れる。   By the way, even if the joint side spline 76 and the adapter side spline 77 are each heat-treated, the joint side spline 76 and the adapter side spline 77 are each subjected to surface treatment after processing. May be. Here, the heat treatment includes tempering treatment and quenching. The tempering treatment refers to a treatment that is tempered to a relatively high temperature (for example, 400 ° C. or higher) after quenching to form a troostite or sorbite structure. In other words, refining refers to an operation of adjusting the steel quality by refining the crystal grains of the steel to substantially improve the toughness. The surface treatment is plating or the like, and solid lubricant surface treatment may be performed. Solid lubricant surface treatment is to form a solid lubricant treatment coating, which means molybdenum disulfide, graphite (graphite), fluororesin (tetrafluoroethylene, etc.), tungsten disulfide, metal oxidation It is a dry film obtained by dispersing a solid lubricant such as a product in one or several kinds of various organic resins to form a paint and coating it. The solid lubricant film is excellent in wear resistance, heat resistance, and corrosion resistance.

本発明の等速自在継手用連結構造によれば、外側継手部材55とアダプタ73とのトルク伝達がスプラインを介して行われることになり、被連結体(ロール軸等)と外側継手部材55とのトルク伝達を安定して行うことができる。部品点数の減少を図ることができ、組立工数の減少を図って、生産性の向上及びコスト低減化を達成できる。しかも、等速自在継手側とアダプタ側との分離時の移動量を、図1に示すLbとなって、従来のものに比べて小さく設定でき、等速自在継手自身の伸縮によって、被連結体との着脱が可能となる。この分離移動量Lbは、アダプタ側スプライン77の凸歯81bの軸方向長さである。   According to the connecting structure for a constant velocity universal joint of the present invention, torque transmission between the outer joint member 55 and the adapter 73 is performed via the spline, and the connected body (roll shaft or the like) and the outer joint member 55 are connected to each other. Torque transmission can be performed stably. The number of parts can be reduced, the number of assembly steps can be reduced, and productivity can be improved and cost can be reduced. In addition, the amount of movement at the time of separation between the constant velocity universal joint side and the adapter side becomes Lb shown in FIG. 1, and can be set smaller than the conventional one. Can be attached and detached. This separation movement amount Lb is the axial length of the convex teeth 81b of the adapter-side spline 77.

前記継手側スプライン76は、鍔部55bの外径面に周方向全周にわたって形成される継手側凹凸歯78にて構成されたものでは、従来のように、筒部の内径面に軸方向に沿って延びる凹凸条を設ける必要がないので、加工性の簡略化を図ることができる。   The joint-side spline 76 is composed of joint-side irregular teeth 78 formed on the outer diameter surface of the flange portion 55b over the entire circumference in the circumferential direction. Since it is not necessary to provide an uneven strip extending along, it is possible to simplify workability.

継手側スプライン76とアダプタ側スプライン77とはそれぞれ熱処理や表面処理を行うことによって、耐摩耗性に優れたものとなる。   The joint-side spline 76 and the adapter-side spline 77 are each excellent in wear resistance by performing heat treatment and surface treatment.

外側継手部材55を本体部55aと鍔部55bとで構成することによって、外側継手部材55を形成する場合、種々の大きさの鍔部55を用いることができる。このため、継手側スプライン76について、その外径、歯数、幅寸法(継手軸方向長さ)、硬度等を種々相違させることができる。これによって、負荷容量を容易にコントロールすることができる。   When the outer joint member 55 is formed by configuring the outer joint member 55 with the main body portion 55a and the flange portion 55b, the flange portions 55 having various sizes can be used. For this reason, about the joint side spline 76, the outer diameter, the number of teeth, a width dimension (joint axial direction length), hardness, etc. can be varied variously. Thereby, the load capacity can be easily controlled.

ボルト・ナット締結にて結合することによって、外側継手部材55とアダプタ73との安定した結合が可能となる。しかしながら、外側継手部材55とアダプタ73とのトルク伝達はスプラインにて行うので、ボルト・ナット締結のみでもってトルク伝達を行う場合に比べて、ボルト・ナット締結の結合部位を少なくすることができる。このため、ボルト・ナット締結の結合部位(固着具98が配置される部位)は、周方向に沿って所定ピッチで2〜3個とすることができる。すなわち、図5に示すように、外側継手部材55の鍔部55bに設ける貫通孔80を周方向に沿って120度ピッチで3個配設したものであってもよい。この場合、アダプタ73のフランジ部73bに設けられる貫通孔85もこれに対応して周方向に沿って120度ピッチで3個配設したものとなる。   By coupling by bolt / nut fastening, the outer joint member 55 and the adapter 73 can be stably coupled. However, since torque transmission between the outer joint member 55 and the adapter 73 is performed by a spline, it is possible to reduce the number of bolt / nut fastening joints compared to the case where torque transmission is performed only by bolt / nut fastening. For this reason, the number of bolt / nut fastening joint parts (parts where the fixing tool 98 is disposed) can be two or three at a predetermined pitch along the circumferential direction. That is, as shown in FIG. 5, three through holes 80 provided in the flange portion 55 b of the outer joint member 55 may be arranged at a 120-degree pitch along the circumferential direction. In this case, three through-holes 85 provided in the flange portion 73b of the adapter 73 are also arranged at a 120-degree pitch along the circumferential direction.

このように、ボルト・ナット締結の結合部位は、周方向に沿って所定ピッチで2〜3個とすることによって、ボルト・ナット締結数及びボルト・ナット締結作業の減少を図ることができ、組立作業性の向上を図ることができる。すなわち、従来のボルト締結によるトルク伝達仕様に比べ、衝撃入力によるボルトの緩み、せん断等の懸念を解消できる適用性が高い仕様となる。   In this way, the number of bolts and nuts to be fastened can be reduced by reducing the number of bolts and nuts to be tightened and the number of bolts and nuts to be fastened. Workability can be improved. That is, compared with the conventional torque transmission specification by bolt fastening, it becomes a specification with high applicability that can eliminate concerns such as loosening and shearing of the bolt due to impact input.

また、図5においては、継手側スプライン76の嵌合開始部に面取部90を設けたものである。ここで、嵌合開始部とは、凸歯78bの側面91とアダプタ側の端面92との間のコーナ部である。   Further, in FIG. 5, a chamfered portion 90 is provided at the fitting start portion of the joint-side spline 76. Here, the fitting start portion is a corner portion between the side surface 91 of the convex tooth 78b and the end surface 92 on the adapter side.

このように、面取部90を設けることによって、スプライン同士を嵌合させる際に、面取部90がガイドとなって、滑らかな結合が可能となる。しかも、嵌合時にスプラインの歯部のエッジが衝突して損傷することがなくなって、耐用性に優れる。   In this way, by providing the chamfered portion 90, when the splines are fitted to each other, the chamfered portion 90 serves as a guide to enable smooth coupling. In addition, the edges of the spline teeth do not collide and are damaged during fitting, and the durability is excellent.

面取部90としては、継手側スプライン76側に設けることなく、アダプタ側スプライン77側に設けるようにしてもよい。アダプタ側スプライン77側に設ける場合、図3に示すように、その凸歯81bの側面94,94とアダプタ側の端面95との間のコーナ部である。このように、アダプタ側スプライン77側に設けた場合であっても、滑らかな結合が可能となる。しかも、嵌合時にスプラインの歯部のエッジが衝突して損傷することがなくなって、耐用性に優れる。   The chamfered portion 90 may be provided on the adapter side spline 77 side without being provided on the joint side spline 76 side. When it is provided on the adapter side spline 77 side, as shown in FIG. 3, it is a corner portion between the side surfaces 94, 94 of the convex tooth 81b and the end surface 95 on the adapter side. Thus, even if it is a case where it provides in the adapter side spline 77 side, a smooth coupling | bonding is attained. In addition, the edges of the spline teeth do not collide and are damaged during fitting, and the durability is excellent.

また、面取部90として、継手側スプライン76側およびアダプタ側スプライン77側に設けてもよい。このように両者に設けることによって、より滑らかな嵌合が可能であるとともに、両スプライン76、77の歯の欠け等を防止できる。   Moreover, you may provide as the chamfering part 90 in the joint side spline 76 side and the adapter side spline 77 side. Thus, by providing both, smoother fitting is possible and the tooth | gear of the teeth of both the splines 76 and 77 etc. can be prevented.

以上、本発明の実施形態につき説明したが、本発明は前記実施形態に限定されることなく種々の変形が可能であって、例えば、継手側スプライン76の凸歯78bの断面形状が台形形状であり、アダプタ側スプライン77の凸歯81bの断面形状が倒立台形形状であったが、凸歯78b及び凸歯81bの断面形状として、長方形乃至正方形形状であってもよい。また、継手側スプライン76及びアダプタ側スプライン77の歯数の増減は任意である。分離移動量としてのLbは、使用する材質、硬度等によっても相違するが、継手側スプライン76とアダプタ側スプライン77がスプライン嵌合状態で、等速自在継手Tとアダプタ73とのトルク伝達機能を発揮できるものであればよい。   As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above embodiments, and various modifications are possible. For example, the cross-sectional shape of the convex teeth 78b of the joint-side spline 76 is a trapezoidal shape. Yes, the cross-sectional shape of the convex teeth 81b of the adapter-side spline 77 is an inverted trapezoidal shape, but the cross-sectional shapes of the convex teeth 78b and the convex teeth 81b may be rectangular or square. Further, the number of teeth of the joint side spline 76 and the adapter side spline 77 can be increased or decreased arbitrarily. Lb as the separation movement amount varies depending on the material used, hardness, etc., but the torque transmission function between the constant velocity universal joint T and the adapter 73 is achieved when the joint side spline 76 and the adapter side spline 77 are in the spline fitting state. Anything can be used.

等速自在継手Tとしては、前記実施形態では、固定式等速自在継手であったが、他のタイプの固定式等速自在継手であっても、摺動式等速自在継手であってもよい。摺動式等速自在継手としても、ダブルオフセット型等速自在継手、トリポード型等速自在継手、クロスグルーブ型等速自在継手等の種々のものに対して適用できる。   Although the constant velocity universal joint T is a fixed type constant velocity universal joint in the above-described embodiment, it may be another type of fixed type constant velocity universal joint or a sliding type constant velocity universal joint. Good. The sliding type constant velocity universal joint can be applied to various types such as a double offset type constant velocity universal joint, a tripod type constant velocity universal joint, and a cross groove type constant velocity universal joint.

55 外側継手部材
55b 鍔部
55a 本体部
58 内側継手部材
59 トルク伝達ボール
60 保持器(ケージ)
70 アダプタ装置
73 アダプタ
73b フランジ部
75 スプライン結合
76 継手側スプライン
77 アダプタ側スプライン
78 継手側凹凸歯
81 アダプタ側凹凸歯
90 面取部
M 等速自在継手用連結構造
T 等速自在継手
55 outer joint member 55b flange 55a main body 58 inner joint member 59 torque transmission ball 60 cage
70 Adapter device 73 Adapter 73b Flange part 75 Spline coupling 76 Joint side spline 77 Adapter side spline 78 Joint side uneven tooth 81 Adapter side uneven tooth 90 Chamfer M Joint connection structure for constant velocity universal joint T Constant velocity universal joint

Claims (8)

産業機械の動力伝達機構として使用される等速自在継手と、従動側ワークである被連結体としての軸とをアダプタ装置を介して着脱可能に連結するための等速自在継手用連結構造であって、
前記アダプタ装置は、外径面にフランジ部を有し、前記が嵌入されて連結される筒状のアダプタを備え、前記等速自在継手の外側継手部材に設けられる鍔部と、アダプタのフランジ部とのいずれか一方の外周面に、周方向全周にわたって形成される第1の凹凸歯を設け、かつ、他方の相手側対向端面に凸部が軸方向に伸びて周方向全周にわたって形成される第2の凹凸歯を設け、前記外側継手部材に設けられる鍔部とアダプタのフランジとを重ね合わせ、第1の凹凸歯と第2の凹凸歯を嵌合させて、外側継手部材の鍔部とアダプタのフランジ部とを結合状態とすることを特徴とする等速自在継手用連結構造。
This is a connecting structure for a constant velocity universal joint for detachably connecting a constant velocity universal joint used as a power transmission mechanism of an industrial machine and a shaft as a connected body , which is a driven work, via an adapter device. And
The adapter device has a flange portion on an outer diameter surface, includes a cylindrical adapter to which the shaft is fitted and connected, a flange portion provided on an outer joint member of the constant velocity universal joint, and a flange of the adapter The first concavo-convex tooth formed over the entire circumference in the circumferential direction is provided on one outer peripheral surface of the part, and the convex portion extends in the axial direction and is formed over the entire circumference in the other opposing end surface. A second concavo-convex tooth is provided, the flange provided on the outer joint member and the flange of the adapter are overlapped with each other, and the first concavo-convex tooth and the second concavo-convex tooth are fitted to each other. A connecting structure for a constant velocity universal joint, characterized in that the portion and the flange portion of the adapter are combined .
第1の凹凸歯を等速自在継手の鍔部に設けるとともに、第2の凹凸歯をアダプタのフランジ部に設けたことを特徴とする請求項1に記載の等速自在継手用連結構造。 2. The connection structure for a constant velocity universal joint according to claim 1, wherein the first concavo-convex teeth are provided on the flange portion of the constant velocity universal joint, and the second concavo-convex teeth are provided on the flange portion of the adapter . 第1の凹凸歯嵌合開始部と第2の凹凸歯の嵌合開始部との少なくともいずれか一方に、面取部を設けたことを特徴とする請求項1又は請求項2に記載の等速自在継手用連結構造。 The chamfered portion is provided in at least one of the first uneven tooth fitting start portion and the second uneven tooth fitting start portion, or the like according to claim 1 or 2, Connection structure for quick universal joints. 第1の凹凸歯と第2の凹凸歯とはそれぞれ熱処理が施されていることを特徴とする請求項1〜請求項3に記載の等速自在継手用連結構造。 The connection structure for a constant velocity universal joint according to claim 1, wherein the first uneven tooth and the second uneven tooth are heat-treated. 第1の凹凸歯と第2の凹凸歯とはそれぞれ加工後に表面処理が施されていることを特徴とする請求項1〜請求項3に記載の等速自在継手用連結構造。 The connection structure for a constant velocity universal joint according to claim 1, wherein the first uneven tooth and the second uneven tooth are each subjected to surface treatment after processing. 外側継手部材の鍔部とアダプタのフランジ部とがボルト・ナット締結にて結合されることを特徴とする請求項1〜請求項5のいずれか1項に記載の等速自在継手用連結構造。   The connecting structure for a constant velocity universal joint according to any one of claims 1 to 5, wherein the flange portion of the outer joint member and the flange portion of the adapter are coupled by bolt and nut fastening. 前記ボルト・ナット締結の締結部位は、周方向に沿って所定ピッチで配設されるとともに、その数を2〜3個とすることを特徴とする請求項6に記載の等速自在継手用連結構造。   7. The joint for constant velocity universal joint according to claim 6, wherein the fastening parts for fastening the bolts and nuts are arranged at a predetermined pitch along the circumferential direction, and the number thereof is two to three. Construction. 外側継手部材は、内側継手部材と、トルク伝達部材と、トルク伝達部材を保持する保持器とを含む内部部品が収容される本体部と、この本体部とは別部材にて構成されてこの本体部に固着される前記鍔部とを備えることを特徴とする請求項1〜請求項7のいずれか1に記載の等速自在継手用連結構造。 The outer joint member is composed of a main body portion that contains an inner joint member, a torque transmission member, and a cage that holds the torque transmission member, and a main body portion that is separate from the main body portion. constant velocity for a universal joint connection structure according to any one of claims 1 to 7, characterized in that it comprises a said flange portion being secured to the section.
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