JP2009103160A - Flexible coupling - Google Patents

Flexible coupling Download PDF

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JP2009103160A
JP2009103160A JP2007273579A JP2007273579A JP2009103160A JP 2009103160 A JP2009103160 A JP 2009103160A JP 2007273579 A JP2007273579 A JP 2007273579A JP 2007273579 A JP2007273579 A JP 2007273579A JP 2009103160 A JP2009103160 A JP 2009103160A
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torque transmission
hub
torque
cylindrical
bodies
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JP5043593B2 (en
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Tetsuya Miyagawa
哲哉 宮川
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Kyushu Hasec Co Ltd
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Kyushu Hasec Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible coupling with large transmission torque while allowing easy maintenance. <P>SOLUTION: The flexible coupling is provided with first and second hubs 10, 20 comprising cylindrical bodies 11, 21; a sleeve 30 having a plurality of cylindrical grooves 36; first and second annular covers 40, 50 fixed to both ends of the sleeve 30; and first and second torque transmission bodies 70, 71 having spherical band-like outer peripheral surfaces fitted to the cylindrical groove 36 and fitted to torque transmission body support pins 60, 61 rotatably and displaceably in a pin axis direction. In the state that the first and second torque transmission bodies 70, 71 are fitted to the cylindrical groove 36, a distal end part of the first hub 10 is opposed to a distal end part of the second hub 20. The cylindrical bodies 11, 21 of the hubs 10, 20 are penetrated through penetration holes 42, 52 of the covers 40, 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、トルク伝達要素が回転体からなるたわみ軸継手に関する。   The present invention relates to a flexible shaft coupling in which a torque transmission element is a rotating body.

製鐵設備、例えば熱間圧延機テーブルローラー用等、伝達トルクが比較的大きい、例えば５ｋＮｍを超えるトルクを伝達するたわみ軸継手として歯車軸継手が広く用いられている。歯車形軸継手は、外筒の内歯車と内筒の外歯車とをかみ合わせてトルクを伝達する。バックラッシ、頂隙、および外歯の歯先と歯面とに設けたクラウニングにより、偏心（軸心の径方向誤差）、軸方向誤差、偏角などの軸心の狂いを吸収する。歯車形軸継手は、伝達トルクが大きく、長寿命、安全性で信頼性が高く、トルク基準で比較すると他のたわみ軸継手に比べて最も低コストであるなどの利点により、永年にわたり広い範囲で用いられている。歯車軸継手は、特に大形機械設備に適している。   Gear shaft couplings are widely used as flexible shaft couplings for transmitting torque that is relatively large, for example, exceeding 5 kNm, such as in iron making equipment, for example, for hot rolling table rollers. The gear-type shaft coupling engages the inner gear of the outer cylinder and the outer gear of the inner cylinder to transmit torque. The backlash, apex space, and crowning provided on the tooth tips and tooth surfaces of the external teeth absorb axial misalignments such as eccentricity (axial center radial error), axial error, and declination. Gear type shaft couplings have a wide range over many years due to advantages such as large transmission torque, long life, safety and reliability, and the lowest cost compared to other flexible shaft couplings when compared with torque standards. It is used. The gear shaft coupling is particularly suitable for large-sized machine equipment.

歯車形軸継手では、伝動軸に偏角が生じた場合、歯面が接触する歯数が少くなり、少ない歯数で荷重を負担しなければならないので、歯は大きな荷重を受ける。また、外歯および内歯は、それぞれ歯面が一定の部分で接触するので、歯面の磨耗が早くなる。歯面の磨耗を防ぐために、頻繁に、例えば６箇月ごとに継手内に充填したグリースなどの潤滑剤を交換しなければならない。したがって、メンテナンスに多くの人手と時間を要し、またメンテナンス中に設備を停止する損失も大きい。また、歯の磨耗が許容限界を超えると部品の交換では済まず、継手全体を交換しなければならない。   In a gear-type shaft coupling, when a declination occurs in the transmission shaft, the number of teeth contacting the tooth surface decreases, and the load must be borne with a small number of teeth, so the teeth receive a large load. Further, since the tooth surfaces of the external teeth and the internal teeth contact each other at a fixed portion, the tooth surfaces are worn quickly. In order to prevent tooth surface wear, the lubricant such as grease filled in the joint must be changed frequently, for example, every six months. Therefore, a lot of manpower and time are required for maintenance, and the loss of stopping the equipment during the maintenance is large. Also, if the wear of the teeth exceeds the allowable limit, it is not necessary to replace the parts, and the entire joint must be replaced.

トルク伝達要素が、球面を有し、回転可能な等速自在継手が知られている（例えば、特許文献１参照）。この等速自在継手は、外輪の内面に軸方向に３本の円筒型トラック溝を形成し、外輪の内側に組み込んだトリポード部材には上記各トラック溝に挿入される半径方向の３本の脚軸を設け、各脚軸の外側に回転自在に取り付けた球形外面を有するスフェリカルローラをトラック溝内に嵌合したものである。この等速自在継手では、ローラの損耗などでスフェリカルローラを交換する場合、トリポードを外輪から引き出さねばならない、つまり駆動軸と従動軸とを切り離さなければならないので、交換作業が面倒かつ長時間を要し、特に大形機械設備、ではメンテナンスが容易でない。   A constant velocity universal joint in which a torque transmission element has a spherical surface and is rotatable is known (for example, see Patent Document 1). This constant velocity universal joint is formed with three cylindrical track grooves in the axial direction on the inner surface of the outer ring, and the tripod member incorporated inside the outer ring has three legs in the radial direction inserted into the track grooves. A spherical roller having a spherical outer surface which is provided with a shaft and is rotatably attached to the outside of each leg shaft is fitted in the track groove. With this constant velocity universal joint, when replacing the spherical roller due to wear of the roller, the tripod must be pulled out of the outer ring, that is, the drive shaft and the driven shaft must be separated. However, maintenance is not easy with large-sized machinery and equipment.

また、トルク伝達要素が、球面を有し、回転可能な自在継手が知られている（特許文献２参照）。この自在継手は、駆動部材と、被駆動部材と、該駆動部材と被駆動部材との間に介在しているトルク伝達部材と、駆動部材と被駆動部材との間に先導部材とを有し、該先導部材が前記駆動、被駆動両部材の何れか一つに対して、両部材中の他の一つの周方向に限られた範囲内でピボット運動をするように構成されている。この自在継手も、トルク伝達部材または先導部材が損耗した場合、駆動部材から被駆動部材を引き抜く、つまり駆動軸と被駆動軸とを切り離さなければならないので、特に大型機械設備では、メンテナンスが容易でない。
特開平３−２７７８２３号公報（特許請求の範囲（１）、第１図、第２図） 特公昭４４−２７０８６号公報（特許請求の範囲１、第１図、第２図） Moreover, the universal joint which a torque transmission element has a spherical surface and can rotate is known (refer patent document 2). The universal joint includes a driving member, a driven member, a torque transmission member interposed between the driving member and the driven member, and a leading member between the driving member and the driven member. The leading member is configured to pivot with respect to any one of the driven and driven members within a limited range in the other circumferential direction of both members. Also in this universal joint, when the torque transmission member or the leading member is worn out, the driven member must be pulled out from the driving member, that is, the driving shaft and the driven shaft must be separated. .
JP-A-3-277823 (Claims (1), FIGS. 1 and 2) Japanese Patent Publication No. 44-27086 (Claims 1, 1 and 2)

この発明は、伝達トルクが大きく、メンテナンスが容易なたわみ軸継手を提供することを課題としている。   An object of the present invention is to provide a flexible shaft coupling that has a large transmission torque and is easy to maintain.

上記課題を解決するために、この発明のたわみ軸継手は、伝動軸が連結される円筒状本体からなる第１および第２ハブ、軸方向に延び、円周方向に間隔をおいた複数の円筒状溝を有するスリーブ、前記第１および第２ハブの本体が軸方向に貫通する貫通穴を有し、スリーブの両端にそれぞれ固定された環状の第１および第２カバー、前記円筒状溝に対応し円周方向に間隔をおいて前記第１および第２ハブの先端部寄りに固定された、外径方向に突出する複数のトルク伝達体支持ピン、および前記円筒状溝に嵌め合う球帯状外周面を有し、前記各トルク伝達体支持ピンに回転可能、かつピン軸方向に変位可能に嵌め合う第１および第２トルク伝達体を備えている。
前記第１および第２トルク伝達体が前記スリーブの円筒状溝にそれぞれ嵌め合った状態で、前記第１ハブの先端部が第２前記ハブの先端部と向き合い、ハブの円筒状本体が前記カバーの貫通穴を貫通している。
前記第１および第２のハブ本体の外周面と第１および第２カバーの貫通穴との間、前記第１ハブと第２ハブの先端との間、前記トルク伝達体支持ピンの先端と円筒状溝の周面との間、前記トルク伝達体と円筒状溝との間、および前記トルク伝達体とカバー内面との間にそれぞれ軸心調整に必要な大きさの隙間が設けられている。 In order to solve the above-mentioned problems, a flexible shaft coupling according to the present invention includes a first and a second hub comprising cylindrical main bodies to which a transmission shaft is coupled, a plurality of cylinders extending in the axial direction and spaced in the circumferential direction. Corresponding to the sleeve having a groove, the first and second covers of the first and second hubs having through-holes passing through in the axial direction, and fixed to both ends of the sleeve, respectively, the cylindrical groove A plurality of torque transmitting body support pins projecting in the outer diameter direction, which are fixed to the distal ends of the first and second hubs at intervals in the circumferential direction, and a ball-shaped outer periphery fitted into the cylindrical groove There are provided first and second torque transmission bodies having a surface and fitted to the torque transmission body support pins so as to be rotatable and displaceable in the pin axis direction.
With the first and second torque transmitting bodies fitted into the cylindrical grooves of the sleeve, the tip of the first hub faces the tip of the second hub, and the cylindrical main body of the hub is the cover. It penetrates the through hole.
Between the outer peripheral surfaces of the first and second hub bodies and the through holes of the first and second covers, between the first hub and the tip of the second hub, the tip of the torque transmitting body support pin and the cylinder Clearances of a size necessary for adjusting the axial center are provided between the circumferential surface of the groove, between the torque transmission body and the cylindrical groove, and between the torque transmission body and the inner surface of the cover.

上記たわみ軸継手において、前記トルク伝達体を鋼製またはエンジニアリングプラスチック製とすることができる。また、前記トルク伝達体がブッシュを介して前記トルク伝達体支持ピンに嵌め合う構成としてもよい。このブッシュを自己潤滑材料製としてもよい。さらに、このブッシュに代えて、周方向に隣り合う多数の針状コロを介して前記トルク伝達体支持ピンに嵌め合う構成としてもよい。   In the flexible shaft coupling, the torque transmitting body may be made of steel or engineering plastic. Moreover, it is good also as a structure which the said torque transmission body fits into the said torque transmission body support pin via a bush. This bush may be made of a self-lubricating material. Furthermore, it is good also as a structure which replaces with this bush and is fitted to the said torque transmission body support pin through many needle-shaped rollers adjacent to the circumferential direction.

この発明のたわみ軸継手は、スリーブから一方のカバーを取り外してカバーを後退させ、スリーブと他方のカバーを一体として軸方向に後退させると、駆動軸と従動軸とを切り離すことなく、トルク伝達体を取り出すことができる。したがって、たわみ軸継手のメンテナンスが簡便、かつ短時間で行うことができる。この結果、機械設備の停止時間は短縮され、設備稼働率の低下を最小限に抑えることができる。トルクを伝達時は、すべてのトルク伝達体が円筒状溝に常に接触しているので、５ｋＮｍを超えるような大きなトルクを伝達することができる。また、トルク伝達中はトルク伝達体が回転し、トルク伝達体は当り面が常に変化するので、磨耗が少なく、長期の使用に耐える。   In the flexible shaft coupling of the present invention, when one cover is removed from the sleeve and the cover is retracted, and the sleeve and the other cover are integrally retracted in the axial direction, the torque transmission body is separated without separating the drive shaft and the driven shaft. Can be taken out. Therefore, maintenance of the flexible shaft coupling can be performed easily and in a short time. As a result, the downtime of the mechanical equipment can be shortened, and the reduction in equipment availability can be minimized. When transmitting torque, since all the torque transmitting bodies are always in contact with the cylindrical groove, a large torque exceeding 5 kNm can be transmitted. In addition, the torque transmission body rotates during torque transmission, and the contact surface of the torque transmission body constantly changes, so that wear is small and it can withstand long-term use.

図１および図２はこの発明の一形態を示すもので、図１はたわみ軸継手の縦断面図、図２は図１の２−２線断面図である。たわみ軸継手は、主として第１および第２ハブ１０、２０、スリーブ３０、第１および第２カバー４０、５０、第１および第２トルク伝達体支持ピン６０、６１、ならびに第１および第２トルク伝達体７０、７１からなっている。   1 and 2 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a flexible shaft coupling, and FIG. 2 is a sectional view taken along line 2-2 of FIG. The flexible shaft coupling mainly includes the first and second hubs 10 and 20, the sleeve 30, the first and second covers 40 and 50, the first and second torque transmitting body support pins 60 and 61, and the first and second torques. It consists of transmission bodies 70 and 71.

第１ハブ１０は円筒状のハブ本体１１からなり、ハブ本体１１の先端部寄りの外周面から環状のボス１２が突出している。ボス１２には、円周方向に等間隔をおいて複数（この形態例では８箇）のトルク伝達体支持ピン穴１３がハブ本体１１の円形断面の中心に向かってあけられている。ハブ本体１１の軸穴１６に伝動軸（図示しない）を連結するキー溝１７が設けられている。第２ハブ２０も第１ハブ１０と同様にボス２２が突出するハブ本体２１を有し、ボス２２にトルク伝達体支持ピン穴２３があけられている。ハブ本体２０は、軸穴２６にキー溝２７が設けられている。   The first hub 10 includes a cylindrical hub body 11, and an annular boss 12 projects from an outer peripheral surface near the tip of the hub body 11. A plurality (eight in this embodiment) of torque transmitting body support pin holes 13 are formed in the boss 12 at equal intervals in the circumferential direction toward the center of the circular cross section of the hub body 11. A key groove 17 for connecting a transmission shaft (not shown) to the shaft hole 16 of the hub body 11 is provided. Similarly to the first hub 10, the second hub 20 has a hub body 21 from which a boss 22 protrudes, and a torque transmitting body support pin hole 23 is formed in the boss 22. The hub body 20 is provided with a key groove 27 in the shaft hole 26.

スリーブ３０は、図３および図４に示すように、円筒状のスリーブ本体３１からなっている。スリーブ本体３１の両端の外周部は本体軸方向に突出するフランジ３２となっている。フランジ３２の内側隅部は斜めに切り取られた切欠き３３となっている。本体内周面に前記トルク伝達体支持ピン穴６０、６１に対応する位置に、本体軸方向に延び、円筒状内周面を有する円筒状溝３６が設けられている。スリーブ３０の両端面に、複数の取付けボルト用のめねじ３４が、円周方向に隣り合う２つの円筒状溝３６のちょうど中間に切られている。   As shown in FIGS. 3 and 4, the sleeve 30 includes a cylindrical sleeve body 31. The outer peripheral portions of both ends of the sleeve main body 31 are flanges 32 protruding in the main body axial direction. An inner corner of the flange 32 is a notch 33 cut obliquely. A cylindrical groove 36 extending in the axial direction of the main body and having a cylindrical inner peripheral surface is provided at a position corresponding to the torque transmitting body support pin holes 60 and 61 on the inner peripheral surface of the main body. On both end faces of the sleeve 30, a plurality of female screws 34 for mounting bolts are cut just in the middle between two circumferentially adjacent cylindrical grooves 36.

第１カバー４０は、軸方向に貫通穴４２が貫通する環状のカバー本体４１からなっている。カバー本体内周面にＯリング溝４３が切られている。カバー本体４１の外周部の内側は段４４となっており、段４４は前記スリーブ３０の切欠き３３とともにＯリング溝３８を形成する。第２カバー５０も第１カバー４０と同様に、貫通穴５２が貫通する環状のカバー本体５１を有し、カバー本体５１にＯリング溝５３、および段５４が設けられている。前記スリーブ３０の取付けボルト用めねじ３４に対応する位置に、複数の取付けボルト用穴４６があけられている。第１および第２カバー４０、５０は、スリーブ３０の両端に取付けボルト５８で固定される。Ｏリング溝４３、５３にＯリング８４が、またＯリング溝３８にＯリング８５がそれぞれ装着され、継手内部からの潤滑剤の漏れを防ぐとともに、外部からの水分、ダストなどの侵入を防ぐ。   The 1st cover 40 consists of the cyclic | annular cover main body 41 which the through-hole 42 penetrates to an axial direction. An O-ring groove 43 is cut in the inner peripheral surface of the cover body. The inner side of the outer peripheral portion of the cover body 41 has a step 44, and the step 44 forms an O-ring groove 38 together with the notch 33 of the sleeve 30. Similarly to the first cover 40, the second cover 50 has an annular cover main body 51 through which the through hole 52 passes, and the cover main body 51 is provided with an O-ring groove 53 and a step 54. A plurality of mounting bolt holes 46 are formed at positions corresponding to the mounting bolt female threads 34 of the sleeve 30. The first and second covers 40 and 50 are fixed to both ends of the sleeve 30 with mounting bolts 58. An O-ring 84 is mounted in the O-ring grooves 43 and 53, and an O-ring 85 is mounted in the O-ring groove 38, respectively, to prevent leakage of lubricant from the inside of the joint and to prevent entry of moisture, dust and the like from the outside.

第１および第２トルク伝達体支持ピン６０、６１は、ピン本体６２が中間に形成されたフランジ６５により基部６３と支持部６４に分けられている。基部６３は前記トルク伝達体支持ピン穴１３、２３に、例えば焼きばめにより、しまりばめされている。複数（この形態例では８本）のトルク伝達体支持ピン６０、６１は、ハブ本体１１、２１から放射状に外径方向に突出している。   The first and second torque transmission body support pins 60 and 61 are divided into a base portion 63 and a support portion 64 by a flange 65 having a pin body 62 formed in the middle. The base 63 is tightly fitted into the torque transmitting body support pin holes 13 and 23 by, for example, shrink fitting. A plurality (eight in this embodiment) of torque transmission body support pins 60 and 61 project radially from the hub bodies 11 and 21 in the outer diameter direction.

第１および第２トルク伝達体７０、７１は、外周面が球面を平行な２平面で切り取った球帯となっており、前記円筒状溝３６に隙間をもって嵌め合っている。円筒状溝３６とトルク伝達体７０、７１との間の隙間は、直径方向で、例えば０．３〜０．５ｍｍ程度である。トルク伝達体７０、７１の材料は、この形態例では鋼であるが、銅合金、アルミニウム合金などの合金、またはエンジニアリングプラスチックであってもよい。エンジニアリングプラスチックとして、例えばポリアセタール、ポリアミド、変性ＰＰＥ、ポリカーボネート、熱可塑性ポリエステルなどが用いられる。トルク伝達体７０、７１の材料が金属の場合、継手内部の空間にグリースなどの潤滑剤を充填する必要があるが、エンジニアリングプラスチックの場合、潤滑剤は不要である。   The first and second torque transmitting bodies 70 and 71 are spherical bands whose outer peripheral surfaces are cut off by two parallel planes, and are fitted into the cylindrical groove 36 with a gap. The gap between the cylindrical groove 36 and the torque transmission bodies 70 and 71 is, for example, about 0.3 to 0.5 mm in the diameter direction. The material of the torque transmission bodies 70 and 71 is steel in this embodiment, but may be an alloy such as a copper alloy or an aluminum alloy, or an engineering plastic. As the engineering plastic, for example, polyacetal, polyamide, modified PPE, polycarbonate, thermoplastic polyester and the like are used. When the material of the torque transmission bodies 70 and 71 is a metal, it is necessary to fill the space inside the joint with a lubricant such as grease. However, in the case of an engineering plastic, the lubricant is unnecessary.

トルク伝達体７０、７１は、トルク伝達体支持ピン６０、６１にブッシュ６７を介して回転可能かつピン軸方向に変位可能に嵌め合っている。ブッシュ６７の材料として、この形態例ではＳＮＣＭ−４４を用いているが、自己潤滑材料を用いてもよい。自己潤滑材料として、例えば鉄または銅系含油焼結金属、二硫化モリブデンまたは二硫化タングステン充填銅合金、繊維強化四フッ化エチレン系複合材などが用いられる。また、トルク伝達体７０、７１が鋼製である場合、トルク伝達体支持ピン６０、６１に嵌め合う鋼製スリーブとトルク伝達体７０，７１との間に針状コロ軸受を構成するように多数の針状コロを挿入してもよい。   The torque transmission bodies 70 and 71 are fitted to the torque transmission body support pins 60 and 61 via a bush 67 so as to be rotatable and displaceable in the pin axis direction. In this embodiment, SNCM-44 is used as the material of the bush 67, but a self-lubricating material may be used. As the self-lubricating material, for example, iron or copper-based oil-impregnated sintered metal, molybdenum disulfide or tungsten disulfide-filled copper alloy, fiber reinforced ethylene tetrafluoride-based composite material, or the like is used. Further, when the torque transmission bodies 70 and 71 are made of steel, a large number of needle roller bearings are formed between the torque transmission bodies 70 and 71 and the steel sleeves fitted to the torque transmission body support pins 60 and 61. Needle-shaped rollers may be inserted.

トルク伝達体支持ピン６０、６１の先端に、ストッパ８２が取り付けられている。ストッパとして、例えば止め輪が用いられる。トルク伝達体７０、７１の上端面とストッパ８２との間に、例えば０．１〜０．３ｍｍ程度の隙間が設けられている。トルク伝達体７０、７１はこの隙間だけピン軸方向に変位することができる。   A stopper 82 is attached to the tip of the torque transmitting body support pins 60 and 61. For example, a retaining ring is used as the stopper. A gap of, for example, about 0.1 to 0.3 mm is provided between the upper end surfaces of the torque transmission bodies 70 and 71 and the stopper 82. The torque transmitting bodies 70 and 71 can be displaced in the pin axis direction by this gap.

たわみ軸継手は、上記部材で次のように構成されている。
第１ハブ１０の先端部と第２ハブ２０の先端部とが向き合い、ハブ１０、２０の円筒状本体１１、２１が第１および第２カバー４０、５０の貫通穴４２、５２を貫通した状態で、両端にカバー４０、５０が固定されたスリーブ３０内に収納されている。この状態で、第１および第２トルク伝達体７０、７１が円筒状溝３６にそれぞれ嵌め合っている。第１および第２ハブ本体１１、２１の外周面と第１および第２カバー貫通穴４２、５２との間に隙間ａ、第１ハブ１０と第２ハブ２０の先端との間に隙間ｂ、円筒状溝３６の周面とトルク伝達体支持ピン６０、６１の先端との間に隙間ｃ、円筒状溝３６とトルク伝達体７０、７１との間に隙間ｄ、およびカバー４０、５０の内面とトルク伝達体７０、７１との間に隙間ｅが設けられている。隙間ａ〜ｅは、軸心調整に必要な大きさとなっている。 The flexible shaft coupling is composed of the above-described members as follows.
The tip of the first hub 10 and the tip of the second hub 20 face each other, and the cylindrical bodies 11 and 21 of the hubs 10 and 20 pass through the through holes 42 and 52 of the first and second covers 40 and 50. Thus, the cover 40, 50 is housed in a sleeve 30 fixed at both ends. In this state, the first and second torque transmission bodies 70 and 71 are fitted in the cylindrical grooves 36, respectively. A gap a between the outer peripheral surface of the first and second hub bodies 11 and 21 and the first and second cover through holes 42 and 52; a gap b between the first hub 10 and the tip of the second hub 20; A clearance c between the circumferential surface of the cylindrical groove 36 and the tips of the torque transmission body support pins 60 and 61, a clearance d between the cylindrical groove 36 and the torque transmission bodies 70 and 71, and the inner surfaces of the covers 40 and 50 And a gap e between the torque transmission bodies 70 and 71. The gaps a to e are the sizes necessary for adjusting the axis.

上記のように構成されたたわみ軸継手において、トルクが第１ハブ１０から第２ハブ２０に伝達されるとすると、駆動軸からキー（いずれも図示しない）を介して第１ハブ１０に伝達され、次いで順次第１トルク伝達体支持ピン６０、第１トルク伝達体７０、スリーブ３０、第２トルク伝達体７１、第２トルク伝達体支持ピン６１、第２ハブ２０、キー、従動軸（いずれも図示しない）と伝達される。   In the flexible shaft coupling configured as described above, assuming that torque is transmitted from the first hub 10 to the second hub 20, it is transmitted from the drive shaft to the first hub 10 via a key (both not shown). Then, the first torque transmission body support pin 60, the first torque transmission body 70, the sleeve 30, the second torque transmission body 71, the second torque transmission body support pin 61, the second hub 20, the key, the driven shaft (all (Not shown).

トルク伝達時に、軸方向誤差はトルク伝達体７０、７１が円筒状溝３０を転動しながら、第１および第２ハブ１０、２０が軸方向に変位して吸収される。偏心（軸心の径方向誤差）は図５に示すように、偏心の大きさｈに応じて、第１および第２ハブ１０、２０が径方向に、かつトルク伝達体７０、７１がトルク伝達体支持ピン軸方向にそれぞれ変位するとともに、スリーブ３０が傾斜して吸収される。偏角は、偏角の大きさに応じて、第１および第２ハブ１０、２０、ならびにスリーブ３０が傾斜するとともに、トルク伝達体７０、７１がトルク伝達体支持ピン軸方向に変位して吸収される。   At the time of torque transmission, the axial direction error is absorbed by the first and second hubs 10 and 20 being displaced in the axial direction while the torque transmission bodies 70 and 71 roll on the cylindrical groove 30. As shown in FIG. 5, the eccentricity (radial direction error of the shaft center) is such that the first and second hubs 10 and 20 are in the radial direction and the torque transmission bodies 70 and 71 transmit torque according to the magnitude h of the eccentricity. The sleeve 30 is inclined and absorbed while being displaced in the body support pin axis direction. The declination is absorbed by the first and second hubs 10 and 20 and the sleeve 30 being inclined in accordance with the magnitude of the declination, and the torque transmission bodies 70 and 71 being displaced in the axial direction of the torque transmission support pin. Is done.

この発明の一形態を示すもので、たわみ軸継手の縦断面図である。1 shows an embodiment of the present invention and is a longitudinal sectional view of a flexible shaft coupling. 図１の２−２線断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG. 図１に示すスリーブを示すもので、図４の３−３線断面図である。FIG. 3 shows the sleeve shown in FIG. 1, and is a cross-sectional view taken along line 3-3 in FIG. 4. 図３の４−４線断面図である。FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. この発明のたわみ軸継手における偏心調整の模式的説明図である。It is typical explanatory drawing of eccentric adjustment in the flexible shaft coupling of this invention.

符号の説明Explanation of symbols

１０、２０：ハブ １１、２１：ハブ本体
１３、２３：トルク伝達体支持ピン孔 ３０：スリーブ
３１：スリーブ本体 ３４：取付けボルト用めねじ
４０、５０：カバー ４１、５１：カバー本体
４２、５２：カバー貫通孔 ４６、５６：取付けボルト用穴
５８：取付けボルト ６０、６１：トルク伝達体支持ピン
６２：ピン本体 ６２：ピン本体基部
６４：ピン本体支持部 ６７：ブッシュ
７０、７１：トルク伝達体 ７３：トルク伝達体の本体
７４：トルク伝達体の軸穴 ７５：トルク伝達体のハブ側端面
７６：トルク伝達体のスリーブ側端面 ８２：ストッパ（止め輪）
８４、８５：Ｏリング 10, 20: Hub 11, 21: Hub body 13, 23: Torque transmission body support pin hole 30: Sleeve 31: Sleeve body 34: Female screw for mounting bolt 40, 50: Cover 41, 51: Cover body 42, 52: Cover through hole 46, 56: Mounting bolt hole 58: Mounting bolt 60, 61: Torque transmission body support pin 62: Pin main body 62: Pin main body base 64: Pin main body support section 67: Bush 70, 71: Torque transmission body 73 : Torque transmission body 74: Torque transmission shaft hole 75: Torque transmission hub side end surface 76: Torque transmission body sleeve side end surface 82: Stopper (retaining ring)
84, 85: O-ring

Claims (6)

伝動軸が連結される円筒状本体をからなる第１および第２ハブ、
軸方向に延び、円周方向に間隔をおいた複数の円筒状溝を有するスリーブ、
前記第１および第２ハブの本体が軸方向に貫通する貫通穴を有し、スリーブの両端にそれぞれ固定された環状の第１および第２カバー、
前記円筒状溝に対応し円周方向に間隔をおいて前記第１および第２ハブの先端部寄りに固定された、外径方向に突出する複数のトルク伝達体支持ピン、および
前記円筒状溝に嵌め合う球帯状外周面を有し、前記各トルク伝達体支持ピンに回転可能かつピン軸方向に変位可能に嵌め合う第１および第２トルク伝達体、
を備えたたわみ軸継手であって、
前記第１および第２トルク伝達体が前記スリーブの円筒状溝に嵌め合った状態で、前記第１ハブの先端部が第２前記ハブの先端部と向き合い、ハブの円筒状本体が前記カバーの貫通穴を貫通しており、前記第１および第２のハブ本体の外周面と第１および第２カバーの貫通穴との間、前記第１ハブと第２ハブの先端との間、前記トルク伝達体支持ピンの先端と円筒状溝の周面との間、前記トルク伝達体と円筒状溝との間、および前記トルク伝達体とカバー内面との間にそれぞれ軸心調整に必要な大きさの隙間が設けられているたわみ軸継手。 First and second hubs comprising cylindrical bodies to which a transmission shaft is coupled;
A sleeve having a plurality of cylindrical grooves extending in the axial direction and spaced in the circumferential direction;
Annular first and second covers each having a through-hole through which the main body of the first and second hubs penetrates in the axial direction and fixed to both ends of the sleeve;
A plurality of torque transmitting body support pins projecting in the outer diameter direction, fixed to the distal ends of the first and second hubs at intervals in the circumferential direction corresponding to the cylindrical grooves, and the cylindrical grooves First and second torque transmitting bodies that have a spherical outer peripheral surface that fits to each other and are fitted to the respective torque transmitting body support pins so as to be rotatable and displaceable in the pin axial direction;
A flexible shaft coupling comprising:
In a state where the first and second torque transmission bodies are fitted in the cylindrical grooves of the sleeve, the tip of the first hub faces the tip of the second hub, and the cylindrical main body of the hub is the cover of the cover. The torque passing through the through hole, between the outer peripheral surface of the first and second hub bodies and the through hole of the first and second covers, between the first hub and the tip of the second hub, and the torque. Dimensions required for adjusting the shaft center between the tip of the transmission support pin and the peripheral surface of the cylindrical groove, between the torque transmission body and the cylindrical groove, and between the torque transmission body and the cover inner surface Flexible shaft coupling with a clearance of. 前記トルク伝達体が鋼製である請求項１記載のたわみ軸継手。   The flexible shaft coupling according to claim 1, wherein the torque transmission body is made of steel. 前記トルク伝達体がエンジニアリングプラスチック製である請求項１記載のたわみ軸継手。   The flexible shaft coupling according to claim 1, wherein the torque transmission body is made of engineering plastic. 前記トルク伝達体がブッシュを介して前記トルク伝達体支持ピンに嵌め合っている請求項１、２または３記載のたわみ軸継手。   4. The flexible shaft coupling according to claim 1, wherein the torque transmission body is fitted to the torque transmission body support pin via a bush. 前記ブッシュが自己潤滑材料製である請求項４記載のたわみ軸継手。   The flexible shaft coupling according to claim 4, wherein the bush is made of a self-lubricating material. 前記トルク伝達体が周方向に隣り合う多数の針状コロを介して前記トルク伝達体支持ピンに嵌め合っている請求項１、２または３記載のたわみ軸継手。   The flexible shaft coupling according to claim 1, 2, or 3, wherein the torque transmission body is fitted to the torque transmission body support pin through a plurality of needle rollers adjacent in the circumferential direction.
JP2007273579A 2007-10-22 2007-10-22 Flexible shaft coupling Expired - Fee Related JP5043593B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010122875A1 (en) 2009-04-21 2010-10-28 三洋電機株式会社 Solar cell module
CN109737146A (en) * 2019-02-25 2019-05-10 上海埃依斯航天科技有限公司 A kind of long shaft eccentric adjustable mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010122875A1 (en) 2009-04-21 2010-10-28 三洋電機株式会社 Solar cell module
CN109737146A (en) * 2019-02-25 2019-05-10 上海埃依斯航天科技有限公司 A kind of long shaft eccentric adjustable mechanism

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