JP2011073543A - Telescopic shaft for vehicle steering - Google Patents

Telescopic shaft for vehicle steering Download PDF

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JP2011073543A
JP2011073543A JP2009226275A JP2009226275A JP2011073543A JP 2011073543 A JP2011073543 A JP 2011073543A JP 2009226275 A JP2009226275 A JP 2009226275A JP 2009226275 A JP2009226275 A JP 2009226275A JP 2011073543 A JP2011073543 A JP 2011073543A
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shaft
male
female
vehicle steering
telescopic
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JP5347881B2 (en
JP2011073543A5 (en
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Seiichi Moriyama
誠一 森山
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NSK Ltd
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NSK Ltd
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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/03—Shafts; Axles telescopic
    • F16C3/035—Shafts; Axles telescopic with built-in bearings

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Abstract

<P>PROBLEM TO BE SOLVED: To provide cost reduction by achieving miniaturization of a telescopic shaft for vehicle steering. <P>SOLUTION: In the telescopic shaft for vehicle steering, built in a vehicle steering shaft and having a male shaft and a female shaft fitted with each other to transmit torque and to relatively move in the axial direction, a roller is fitted between at least a pair of axial grooves formed on an outer-periphery surface of the male shaft and an inner-periphery surface of the female shaft, and when axial relative movement is performed between the male shaft and the female shaft, the male shaft is connected to the female shaft through an elastic member which performs elastic deformation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、車両ステアリング用伸縮軸に関するものである。   The present invention relates to a telescopic shaft for vehicle steering.

自動車の操舵機構部の伸縮軸には、自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能が要求される。また、その他のケースとして操舵軸継手をピニオンシャフトに締結する際に作業者が、伸縮軸をいったん縮めてからピニオンシャフトに嵌合させ締結させるための伸縮機能が必要とされる場合がある。伸縮軸は、ガタ音を低減することと、ステアリングホイール上のガタ感を低減することと、軸方向の摺動動作時における摺動抵抗を低減することとが要求される。   The telescopic shaft of the steering mechanism portion of the automobile is required to absorb the axial displacement generated when the automobile travels and to transmit the displacement and vibration on the steering wheel. As another case, when the steering shaft joint is fastened to the pinion shaft, an operator may need an expansion / contraction function for temporarily contracting the telescopic shaft and then fitting and fastening it to the pinion shaft. The telescopic shaft is required to reduce the rattling noise, to reduce the rattling on the steering wheel, and to reduce the sliding resistance during the sliding operation in the axial direction.

このようなことから、従来、伸縮軸の雄軸に、ナイロン膜をコーティングし、摺動部にグリースを塗布し、金属騒音、金属打音等を吸収または緩和するとともに、摺動抵抗の低減と回転方向ガタの低減を行ってきた。   For this reason, conventionally, the male shaft of the telescopic shaft is coated with a nylon film, and grease is applied to the sliding portion to absorb or alleviate metal noise, metal hitting sound, etc., and to reduce sliding resistance. The rotation direction play has been reduced.

しかし、使用経過によりナイロン膜の摩耗が進展して回転方向ガタが大きくなるといったことがある。また、エンジンルーム内の高温にさらされる条件下では、ナイロン膜は、体積変化し、摺動抵抗が著しく大きくなったり、摩粍が著しく促進されたりするため、回転方向ガタが大きくなるといったことがある。   However, there is a case where wear of the nylon film progresses with the progress of use and the play in the rotational direction increases. In addition, under conditions where the engine room is exposed to high temperatures, the nylon membrane changes in volume, and the sliding resistance increases remarkably and the friction is significantly accelerated. is there.

この部分の改善の先行技術としては、特許文献１があり、これは、雄軸の外周面と雌軸の内周面とに夫々形成した複数対の軸方向溝の間に、両軸の軸方向相対移動の際に転動するトルク伝達部材（球状体）が嵌合してある構成となっている。   As a prior art for improvement of this portion, there is Patent Document 1, which includes shafts of both shafts between a plurality of pairs of axial grooves formed on the outer peripheral surface of the male shaft and the inner peripheral surface of the female shaft, respectively. A torque transmission member (spherical body) that rolls in the direction relative movement is fitted.

さらに、この独国特許では、トルク伝達部材（球状体）の径方向内方又は外方と、各対の軸方向溝との間に、トルク伝達部材（球状体）を介して雄軸と雌軸に予圧を付与するための予圧用の弾性体（板バネ）が設けてある。   Furthermore, in this German patent, a male shaft and a female are interposed via a torque transmission member (spherical body) between a radially inward or outward direction of the torque transmission member (spherical body) and each pair of axial grooves. A preload elastic body (plate spring) is provided for applying preload to the shaft.

これにより、トルク非伝達時（摺動時）には、板バネにより、トルク伝達部材（球状体）を雌軸に対してガタ付きのない程度に予圧しているため、雄軸と雌軸の間のガタ付きを防止することができ、雄軸と雌軸は、ガタ付きのない安定した摺動荷重で軸方向に摺動することができる。   As a result, when torque is not transmitted (sliding), the torque transmission member (spherical body) is preloaded by the leaf spring to such an extent that the female shaft is not rattled. It is possible to prevent backlash between the male shaft and the female shaft, and the male shaft and the female shaft can slide in the axial direction with a stable sliding load without backlash.

また、トルク伝達時には、板バネにより、トルク伝達部材（球状体）を周方向に拘束できるようになっているため、雄軸と雌軸は、その回転方向のガタ付きを防止して、高剛性の状態でトルクを伝達することができるというものである。   In addition, the torque transmission member (spherical body) can be constrained in the circumferential direction by a leaf spring during torque transmission, so that the male shaft and female shaft are prevented from rattling in the rotational direction and have high rigidity. In this state, torque can be transmitted.

自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能を満たすためには、２〜３ｍｍ程度の伸縮が必要とされ、操舵軸継手をピニオンシャフトに締結する際に作業者が、伸縮軸をいったん縮めてからピニオンシャフトに嵌合させ締結させるための伸縮機能を満たすには３０ｍｍ程度の伸縮が必要とされる。   In order to absorb the displacement in the axial direction that occurs when the vehicle is running and to transmit the displacement and vibration on the steering wheel, it is necessary to expand and contract about 2-3 mm, and the steering shaft joint is a pinion In order to satisfy the expansion / contraction function for the operator to contract the expansion / contraction shaft once and then fit and tighten it to the pinion shaft when fastening to the shaft, expansion / contraction of about 30 mm is required.

しかしながら、この先行技術には、自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能と、操舵軸継手をピニオンシャフトに締結する際に作業者が、伸縮軸をいったん縮めてからピニオンシャフトに嵌合させ締結させるための伸縮機能を、同時に満たすために伸縮軸が大型化しコストが嵩むという問題が有った。   However, this prior art absorbs the axial displacement that occurs when the car travels and does not transmit the displacement or vibration on the steering wheel, and work when fastening the steering shaft joint to the pinion shaft. In order to satisfy the expansion / contraction function for a person to contract the expansion / contraction shaft once and then to fit and fasten it to the pinion shaft, the expansion / contraction shaft becomes large and costs increase.

独国特許ＤＥ３７３０３９３Ｃ２号公報German patent DE 3730393C2

本発明は、伸縮軸を小型化するとともに、自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能に優れるステアリング伸縮軸を提供することを目的とする。   It is an object of the present invention to provide a steering telescopic shaft that is excellent in performance that reduces the size of the telescopic shaft and absorbs axial displacement that occurs when the automobile travels and does not transmit the displacement or vibration on the steering wheel. Objective.

上記問題を解決するために、本発明の請求項１に係る車両ステアリング用伸縮軸は、車両のステアリングシャフトに組込み、雄軸と雌軸をトルク伝達可能に且つ軸方向に相対移動可能に嵌合した車両ステアリング用伸縮軸において、前記雄軸の外周面と前記雌軸の内周面に形成した少なくとも１対の軸方向溝の間に、転動体を嵌合し、前記雄軸と前記雌軸との軸方向相対移動の際には弾性変形する弾性部材を介して、前記雄軸と前記雌軸を結合することを特徴とする。   In order to solve the above-mentioned problem, the telescopic shaft for vehicle steering according to claim 1 of the present invention is incorporated in the steering shaft of the vehicle, and the male shaft and the female shaft are fitted so as to be able to transmit torque and move relative to each other in the axial direction. In the telescopic shaft for vehicle steering, a rolling element is fitted between at least one pair of axial grooves formed in the outer peripheral surface of the male shaft and the inner peripheral surface of the female shaft, and the male shaft and the female shaft In the axial relative movement, the male shaft and the female shaft are coupled via an elastic member that is elastically deformed.

このように、本発明の請求項１によれば、雄軸と雌軸は、安定した摺動荷重で軸方向に摺動することができる。さらに、弾性部材により雄軸と雌軸を軸方向に結合しているため、軸方向力が入ったときには雄軸と雌軸は摺動し、軸方向力が弱くなると雄軸と雌軸を元の軸方向位置に戻そうとする力を発生させる。   Thus, according to claim 1 of the present invention, the male shaft and the female shaft can slide in the axial direction with a stable sliding load. Further, since the male shaft and the female shaft are coupled in the axial direction by the elastic member, the male shaft and the female shaft slide when an axial force is applied, and the male shaft and the female shaft are restored when the axial force is weakened. Generates a force to return to the axial position.

本発明の請求項２に係る車両ステアリング用伸縮軸は、前記弾性部材は、前記雄軸の外周面に外嵌する内環と、前記雌軸の外周面に外嵌する外環と、前記内環と前記外環を連結する弾性体からなることを特徴とする。   In the telescopic shaft for vehicle steering according to claim 2 of the present invention, the elastic member includes an inner ring that is fitted on the outer circumferential surface of the male shaft, an outer ring that is fitted on the outer circumferential surface of the female shaft, It consists of an elastic body which connects a ring and the outer ring.

本発明の請求項３に係る車両ステアリング用伸縮軸は、前記雌軸は、カルダン軸継手のヨークに一体となり、前記雄軸は、シャフトクランプに一体となることを特徴とする。   The telescopic shaft for vehicle steering according to claim 3 of the present invention is characterized in that the female shaft is integrated with a yoke of a cardan shaft joint, and the male shaft is integrated with a shaft clamp.

本発明の請求項４に係る車両ステアリング用伸縮軸は、前記雌軸は、シャフトクランプ等に受け入れられて結合するシャフトに一体となり、前記雄軸は、シャフトクランプに一体となることを特徴とする。   The telescopic shaft for vehicle steering according to claim 4 of the present invention is characterized in that the female shaft is integrated with a shaft that is received and coupled to a shaft clamp or the like, and the male shaft is integrated with the shaft clamp. .

本発明によれば、自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能を満たす軸方向変位を可能とした上で、伸縮軸の小型化を実現することができ、低コストを実現することができる。   According to the present invention, the axial displacement generated when the vehicle travels is absorbed, and the axial displacement that satisfies the performance of not transmitting the displacement or vibration on the steering wheel is made possible. Can be realized, and low cost can be realized.

本発明の実施形態に係る車両ステアリング用伸縮軸を適用した自動車の操舵機構部の概略的側面図である。1 is a schematic side view of a steering mechanism part of an automobile to which a telescopic shaft for vehicle steering according to an embodiment of the present invention is applied. 本発明の第１実施の形態に係る車両ステアリング用伸縮軸の縦断面図である。It is a longitudinal cross-sectional view of the telescopic shaft for vehicle steering which concerns on 1st Embodiment of this invention. 図１のＡ−Ａ線に沿った横断面図である。It is a cross-sectional view along the AA line of FIG. 本発明の第２実施の形態に係る車両ステアリング用伸縮軸の縦断面図である。It is a longitudinal cross-sectional view of the telescopic shaft for vehicle steering which concerns on 2nd Embodiment of this invention.

（車両用ステアリングシャフトの全体構成）
図１は、本発明の実施の形態に係る車両ステアリング用伸縮軸を適用した自動車の操舵機構部の側面図である。 (Overall configuration of vehicle steering shaft)
FIG. 1 is a side view of a steering mechanism portion of an automobile to which a vehicle steering telescopic shaft according to an embodiment of the present invention is applied.

図１において、車体側のメンバ１００にアッパブラケット１０１とロアブラケット１０２とを介して取付けられたアッパステアリングシャフト部１２０（ステアリングコラム１０３と、ステアリングコラム１０３に回転自在に保持されたスアリングシャフト１０４を含む）と、ステアリングシャフト１０４の上端に装着されたステアリングホイール１０５と、ステアリングシャフト１０４の下端にユニバーサルジョイント部１０６を介して連結されたロアステアリングシャフト部１０７と、ロアステアリングシャフト部１０７に操舵軸継手部１０８を介して連結されたピニオンシャフト部１０９と、ピニオンシャフト部１０９に連結したステアリングラック軸１１２と、このステアリングラック軸１１２を支持して車体の別のフレーム１１０に弾性体１１１を介して固定されたステアリングラック支持部材１１３とから操舵機構部が構成されている。   In FIG. 1, an upper steering shaft portion 120 (a steering column 103 and a swinging shaft 104 rotatably held by the steering column 103 is attached to a member 100 on the vehicle body side via an upper bracket 101 and a lower bracket 102. A steering wheel 105 attached to the upper end of the steering shaft 104, a lower steering shaft portion 107 connected to the lower end of the steering shaft 104 via the universal joint portion 106, and a steering shaft joint to the lower steering shaft portion 107. A pinion shaft portion 109 connected via the portion 108, a steering rack shaft 112 connected to the pinion shaft portion 109, and another frame 110 of the vehicle body supporting the steering rack shaft 112. Steering mechanism from a fixed steering rack support member 113 via the elastic body 111 is formed.

車体側のメンバ１００と車体の別のフレーム１１０の間のシャフト部には自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール１０５上にその変位や振動を伝えない性能が要求される。このような性能は、車体がサブフレーム構造となっていて、操舵機構上部を固定するメンバ１００とステアリングラック支持部材１１３が固定されているフレーム１１０が別体となっておりステアリングラック支持部材１１３がゴムなどの弾性体１１１を介してフレーム１１０に締結固定されている構造の場合に要求される。   The shaft portion between the vehicle body side member 100 and another frame 110 of the vehicle body is required to absorb the axial displacement that occurs when the vehicle travels and to transmit the displacement and vibration on the steering wheel 105. Is done. In such performance, the vehicle body has a sub-frame structure, and the member 100 for fixing the upper part of the steering mechanism and the frame 110 to which the steering rack supporting member 113 is fixed are separated, and the steering rack supporting member 113 is This is required in the case of a structure that is fastened and fixed to the frame 110 via an elastic body 111 such as rubber.

伸縮軸には嵌合部のガタ音を低減することと、ステアリングホイール１０５上のガタ感を低減することと、軸方向摺動時における摺動抵抗を低減することが要求される。   The telescopic shaft is required to reduce the rattling noise of the fitting portion, to reduce the backlash on the steering wheel 105, and to reduce the sliding resistance during axial sliding.

（第１実施の形態）
図２は、本発明の第１実施の形態に係る車両ステアリング用伸縮軸の縦断面図である。図１におけるユニバーサルジョイント部１０６または操舵軸継手部１０８が本発明の第１実施の形態に係る車両ステアリング用伸縮軸に相当する。
図３は、図２のＡ−Ａ線に沿った横断面図である。 (First embodiment)
FIG. 2 is a longitudinal sectional view of the telescopic shaft for vehicle steering according to the first embodiment of the present invention. The universal joint portion 106 or the steering shaft joint portion 108 in FIG. 1 corresponds to the telescopic shaft for vehicle steering according to the first embodiment of the present invention.
3 is a cross-sectional view taken along line AA in FIG.

図２に示すように、車両ステアリング用伸縮軸（以後、伸縮軸と記す）は、相互に回転不能に且つ摺動自在に嵌合した雄軸１と雌軸２とからなる。   As shown in FIG. 2, the telescopic shaft for vehicle steering (hereinafter referred to as the telescopic shaft) includes a male shaft 1 and a female shaft 2 that are non-rotatable and slidably fitted to each other.

雌軸２は、カルダン軸継手２０のヨーク２１に一体としてある。雄軸１は、シャフト（入力軸または出力軸）の端部を受け入れて結合するためのシャフトクランプ２２を備えている。   The female shaft 2 is integrated with the yoke 21 of the cardan shaft joint 20. The male shaft 1 includes a shaft clamp 22 for receiving and coupling an end of a shaft (input shaft or output shaft).

図３に示すように、雄軸１の外周面には、周方向に６０度間隔で等配した軸方向溝３が延在して形成してある。対応して雌軸２の内周面にも、周方向に６０度間隔で等配した軸方向溝４が延在して形成してある。   As shown in FIG. 3, axial grooves 3 that are equally distributed in the circumferential direction at intervals of 60 degrees are formed on the outer peripheral surface of the male shaft 1. Correspondingly, axial grooves 4 that are equally distributed at intervals of 60 degrees in the circumferential direction are formed to extend on the inner peripheral surface of the female shaft 2.

雄軸１の軸方向溝３と、雌軸２の軸方向溝４との間に、両軸１，２の軸方向相対移動の際に転動する複数の剛体の球状体５（転動体、ボール）が転動自在に微小隙間ないし弱締め代をもって介装してある。なお、雄軸１の軸方向溝３と雌軸２の軸方向溝４は、断面略円弧状若しくはゴシックアーチ状である。   Between the axial groove 3 of the male shaft 1 and the axial groove 4 of the female shaft 2, a plurality of rigid spherical bodies 5 (rolling bodies, which roll when the two shafts 1 and 2 move in the axial direction relative to each other). Ball) is installed so that it can roll freely with a small gap or a slight tightening allowance. The axial groove 3 of the male shaft 1 and the axial groove 4 of the female shaft 2 have a substantially arc-shaped cross section or a Gothic arch shape.

雄軸１の端部には、ストッパー部６が形成してある。このストッパー部６により、球状体５の脱落を防止している。   A stopper portion 6 is formed at the end of the male shaft 1. The stopper portion 6 prevents the spherical body 5 from falling off.

雌軸２の端部と雄軸１との間に、内環３１と外環３２の間にゴム３３を充填した弾性部材３０が設けてある。内環３１は、その内周面が雄軸１に外嵌固定されており、また外環３２は、その内周面が雌軸２に外嵌固定されている。   Between the end of the female shaft 2 and the male shaft 1, an elastic member 30 filled with rubber 33 is provided between the inner ring 31 and the outer ring 32. The inner ring 31 has an inner peripheral surface fixed to the male shaft 1 and the outer ring 32 has an inner peripheral surface fixed to the female shaft 2.

以上のように、球状体５の雄軸１の軸方向一側は、雄軸１に設けたストッパー部６により、軸方向の移動が規制してある一方、球状体５の雄軸１の軸方向他側は、弾性部材３０に当接して、軸方向の移動が規制してある。   As described above, the axial direction side of the male shaft 1 of the spherical body 5 is restricted from moving in the axial direction by the stopper portion 6 provided on the male shaft 1. The other side of the direction is in contact with the elastic member 30 and the movement in the axial direction is restricted.

軸方向に伸縮運動をする際には、雄軸１の軸方向溝３と雌軸２の軸方向溝４との間で球状体５が転動する。また、内環３１と外環３２に軸方向力が掛かりゴム３３が弾性変形する。軸方向力が無くなると、ゴム３３が元の位置に戻る働きをすることで雄軸１と雌軸２の軸方向位置が元の位置に戻ることになる。   When expanding and contracting in the axial direction, the spherical body 5 rolls between the axial groove 3 of the male shaft 1 and the axial groove 4 of the female shaft 2. Further, an axial force is applied to the inner ring 31 and the outer ring 32, and the rubber 33 is elastically deformed. When the axial force is lost, the rubber 33 functions to return to the original position, so that the axial positions of the male shaft 1 and the female shaft 2 return to the original positions.

トルクが負荷されると、雄軸１の軸方向溝３と球状体５と雌軸２の軸方向溝４との間でトルクを受けるようになる。   When torque is applied, the torque is received between the axial groove 3 of the male shaft 1, the spherical body 5, and the axial groove 4 of the female shaft 2.

このように、本実施形態によれば自動車が走行する際に発生する軸方向の変位を吸収し、ステアリングホイール上にその変位や振動を伝えない性能を満たす２〜３ｍｍ程度の伸縮を可能とした上で、伸縮軸の小型化を実現することができ、低コストを実現することができる。   As described above, according to the present embodiment, the axial displacement generated when the automobile travels is absorbed, and the expansion and contraction of about 2 to 3 mm that satisfies the performance of not transmitting the displacement or vibration on the steering wheel is enabled. In the above, it is possible to reduce the size of the telescopic shaft, and it is possible to realize low cost.

（第２実施の形態）
図４は、本発明の第２実施の形態に係る車両ステアリング用伸縮軸の縦断面図である。図１におけるピニオンシャフト部１０９が本発明の第２実施の形態に係る車両ステアリング用伸縮軸に相当する。 (Second Embodiment)
FIG. 4 is a longitudinal sectional view of the telescopic shaft for vehicle steering according to the second embodiment of the present invention. The pinion shaft portion 109 in FIG. 1 corresponds to the telescopic shaft for vehicle steering according to the second embodiment of the present invention.

本第２実施の形態は、上述した第１実施の形態と略同様であり、雌軸２は、シャフトクランプ等に受け入れられて結合するためのシャフト２３に一体としてある。   The second embodiment is substantially the same as the first embodiment described above, and the female shaft 2 is integrated with a shaft 23 that is received and coupled to a shaft clamp or the like.

なお、本発明は、上述した実施の形態に限定されず、種々変形可能である。
実施例では、雄軸１の軸方向溝３と雌軸２の軸方向溝４を周方向に６０度間隔で等配したそれぞれ６個の溝を形成したが、周方向に１８０度間隔で等配しそれぞれ２個の溝を形成してもよいし、周方向に１２０度間隔で等配しそれぞれ３個の溝を形成してもよいし、周方向に９０度間隔で等配しそれぞれ４個の溝を形成してもよい。 In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.
In the embodiment, six grooves are formed in which the axial groove 3 of the male shaft 1 and the axial groove 4 of the female shaft 2 are equally arranged at intervals of 60 degrees in the circumferential direction. Two grooves may be formed, or three grooves may be formed at equal intervals of 120 degrees in the circumferential direction, or four grooves may be formed at equal intervals of 90 degrees in the circumferential direction. Individual grooves may be formed.

実施例では、弾性部材３０にはゴムを用いたが、内環３１と外環３２の間を金属で連結して、金属の弾性を利用したものでもよい。 In the embodiment, rubber is used for the elastic member 30. However, the elastic member 30 may be made of metal by connecting the inner ring 31 and the outer ring 32 with metal.

本発明は、車両のステアリング装置用の伸縮軸として好適に利用できる。   The present invention can be suitably used as a telescopic shaft for a vehicle steering device.

1 雄軸
2 雌軸
3 軸方向溝
4 軸方向溝
5 球状体
6 ストッパー部
20 カルダン軸継手
21 ヨーク
23 シャフト
30 弾性部材
31 内環
32 外環
33 ゴム 1 Male axis
2 Female shaft
3 Axial groove
4 Axial groove
5 Sphere
6 Stopper section
20 Cardan shaft coupling
21 York
23 Shaft
30 Elastic member
31 Inner ring
32 outer ring
33 Rubber

Claims (4)

車両のステアリングシャフトに組込み、雄軸と雌軸をトルク伝達可能に且つ軸方向に相対移動可能に嵌合した車両ステアリング用伸縮軸において、
前記雄軸の外周面と前記雌軸の内周面に形成した少なくとも１対の軸方向溝の間に、転動体を嵌合し、
前記雄軸と前記雌軸との軸方向相対移動の際には弾性変形する弾性部材を介して、前記雄軸と前記雌軸を結合することを特徴とする車両ステアリング用伸縮軸。 In a telescopic shaft for vehicle steering, which is incorporated in a steering shaft of a vehicle and fitted so that a male shaft and a female shaft can transmit torque and can move relative to each other in the axial direction.
A rolling element is fitted between at least one pair of axial grooves formed on the outer peripheral surface of the male shaft and the inner peripheral surface of the female shaft,
A telescopic shaft for vehicle steering, wherein the male shaft and the female shaft are coupled via an elastic member that is elastically deformed when the male shaft and the female shaft are relatively moved in the axial direction. 前記弾性部材は、前記雄軸の外周面に外嵌する内環と、前記雌軸の外周面に外嵌する外環と、前記内環と前記外環を連結する弾性体からなることを特徴とする請求項１に記載の車両ステアリング用伸縮軸。   The elastic member is composed of an inner ring that is externally fitted to the outer peripheral surface of the male shaft, an outer ring that is externally fitted to the outer peripheral surface of the female shaft, and an elastic body that connects the inner ring and the outer ring. The telescopic shaft for vehicle steering according to claim 1. 前記雌軸は、カルダン軸継手のヨークに一体となり、前記雄軸は、シャフトクランプに一体となることを特徴とする請求項１又は２に記載の車両ステアリング用伸縮軸。   The telescopic shaft for vehicle steering according to claim 1 or 2, wherein the female shaft is integrated with a yoke of a cardan shaft joint, and the male shaft is integrated with a shaft clamp. 前記雌軸は、シャフトクランプ等に受け入れられて結合するシャフトに一体となり、前記雄軸は、シャフトクランプに一体となることを特徴とする請求項１又は２に記載の車両ステアリング用伸縮軸。 The telescopic shaft for vehicle steering according to claim 1 or 2, wherein the female shaft is integrated with a shaft that is received by and coupled to a shaft clamp or the like, and the male shaft is integrated with the shaft clamp.
JP2009226275A 2009-09-30 2009-09-30 Telescopic shaft for vehicle steering Expired - Fee Related JP5347881B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108423059A (en) * 2017-02-13 2018-08-21 操纵技术Ip控股公司 Steering column assembly for autonomous vehicle
EP3730810A4 (en) * 2018-01-22 2021-09-29 ERAE AMS Co., Ltd. Plunging assembly of drive shaft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230151843A1 (en) * 2021-11-15 2023-05-18 Steering Solutions Ip Holding Corporation Ballspline shaft with no ball retainer

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JP2007191149A (en) * 2002-06-11 2007-08-02 Nsk Ltd Telescopic shaft for vehicle steering and telescopic shaft for vehicle steering with cardan shaft coupling
JP2007255639A (en) * 2006-03-24 2007-10-04 Nsk Ltd Telescopic shaft and steering device using the same
JP2008298267A (en) * 2007-06-04 2008-12-11 Ntn Corp Shaft clamp of joint for steering
JP2009204007A (en) * 2008-02-26 2009-09-10 Nsk Ltd Fastening structure of yoke of universal joint and shaft

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JP2007191149A (en) * 2002-06-11 2007-08-02 Nsk Ltd Telescopic shaft for vehicle steering and telescopic shaft for vehicle steering with cardan shaft coupling
JP2007255639A (en) * 2006-03-24 2007-10-04 Nsk Ltd Telescopic shaft and steering device using the same
JP2008298267A (en) * 2007-06-04 2008-12-11 Ntn Corp Shaft clamp of joint for steering
JP2009204007A (en) * 2008-02-26 2009-09-10 Nsk Ltd Fastening structure of yoke of universal joint and shaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108423059A (en) * 2017-02-13 2018-08-21 操纵技术Ip控股公司 Steering column assembly for autonomous vehicle
EP3730810A4 (en) * 2018-01-22 2021-09-29 ERAE AMS Co., Ltd. Plunging assembly of drive shaft
US11767877B2 (en) 2018-01-22 2023-09-26 Erae Ams Co., Ltd. Plunging assembly for driveshaft

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