JP2017150551A - Yoke for cross shaft joint and cross shaft joint - Google Patents

Yoke for cross shaft joint and cross shaft joint Download PDF

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JP2017150551A
JP2017150551A JP2016032663A JP2016032663A JP2017150551A JP 2017150551 A JP2017150551 A JP 2017150551A JP 2016032663 A JP2016032663 A JP 2016032663A JP 2016032663 A JP2016032663 A JP 2016032663A JP 2017150551 A JP2017150551 A JP 2017150551A
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yoke
cross shaft
arm
shaft joint
cross
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JP6524937B2 (en
Inventor
誠一 森山
Seiichi Moriyama
誠一 森山
哲也 狩野
Tetsuya Kano
哲也 狩野
宏道 小森
Hiromichi Komori
宏道 小森
要 安田
Kaname Yasuda
要 安田
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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/387—Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a yoke for a cross shaft joint capable of increasing an oscillation angle of a cross shaft joint, downsizing the cross shaft joint, and increasing strength of the cross shaft joint, and provide the cross shaft joint.SOLUTION: Bearing holding holes 21 penetrating a radial direction of a pair of arms 24, 25 formed in a yoke 2 are respectively provided so as to be opposite to each other in the radial direction. On tip sides of the pair of arms 24, 25, the bearing holding holes 21 have an even wall thickness in the radial direction. An inclined surface 32 connecting a point Q at which a normal line positioned from a virtual center line K at an angle β and a circular arc part 30 cross with each other, and a point P on a tip side from the virtual center line K with respect to the arms 24, 25 is formed.SELECTED DRAWING: Figure 4

Description

本発明は、自動車のステアリング装置などに用いられる十字軸継手のヨーク及び十字継手に係り、詳しくは、十字軸を支持するヨークの強度向上を図る技術に関する。   The present invention relates to a cross joint yoke and a cross joint used in a steering device of an automobile, and more particularly to a technique for improving the strength of a yoke that supports the cross shaft.

ラックアンドピニオン式のステアリング装置では、ステアリングホイールの操作によるステアリングシャフトの回転がインターミディエイトシャフトを介してステアリングギヤのピニオンシャフトに伝達される。ステアリングシャフトとインターミディエイトシャフトとの間、インターミディエイトシャフトとピニオンシャフトとの間にはそれぞれ所定の交角が存在するため、連結部にそれぞれ自在継手が用いられる。   In the rack and pinion type steering device, the rotation of the steering shaft by the operation of the steering wheel is transmitted to the pinion shaft of the steering gear through the intermediate shaft. Since there are predetermined crossing angles between the steering shaft and the intermediate shaft and between the intermediate shaft and the pinion shaft, universal joints are used for the connecting portions.

ステアリング装置用の自在継手としては、カルダンジョイント、フックスジョイント等とも呼ばれる十字軸継手が一般に用いられている。十字軸継手は、一対のアームが基部から延設された２つのヨークと、両ヨークを相対角度の変化自在に連結するスパイダーと、アームの軸受保持孔に圧入されてスパイダーのトルク伝達軸とアームとの相対回転を可能に支持する軸受とを有している。   As a universal joint for a steering device, a cross joint called a cardan joint, a hook joint or the like is generally used. The cross shaft joint is composed of two yokes with a pair of arms extending from the base, a spider that connects the two yokes so that the relative angle can be changed, and a torque transmission shaft and arm of the spider that are press-fitted into the bearing holding hole of the arm. And a bearing that supports relative rotation with respect to.

十字軸継手としては、鋼板や鋼管を素材とする溶接構造品のヨークを有するもの（例えば、特許文献１）と、鋼材を素材とする鍛造成形品のヨークを有するもの（例えば、特許文献２）とが存在する。   As the cross joint, one having a yoke of a welded structure made of steel plate or steel pipe (for example, Patent Document 1) and one having a yoke of a forged product made of steel material (for example, Patent Document 2) And exist.

また、十字軸継手用の軸受としては、鋼材切削加工品のベアリングカップにニードルローラを収容したソリッド型のニードルベアリング（例えば、特許文献１）の他、鋼板プレス成形品のシェルにニードルローラを収容したシェル型のニードルベアリング（例えば、特許文献２）が存在する。なお、溶接構造品のヨークとソリッド型のニードルベアリングとを有する十字軸継手は一般にプロペラシャフトなどの重荷重用であり、ステアリング装置では鍛造成形品のヨークとシェル型のニードルベアリングとを有する十字軸継手が多く用いられている。   Further, as a bearing for a cross shaft joint, in addition to a solid type needle bearing (for example, Patent Document 1) in which a needle roller is accommodated in a bearing cup of a steel cutting product, a needle roller is accommodated in a shell of a steel plate press-formed product. There is a shell-type needle bearing (for example, Patent Document 2). A cross joint having a welded structure yoke and a solid needle bearing is generally used for heavy loads such as a propeller shaft. In a steering device, a cross joint having a yoke forged molding and a shell needle bearing is used. Is often used.

特開２００３−６５３５３号公報JP 2003-65353 A 特開２００６−２７５０８６号公報JP 2006-275086 A

十字軸継手は、車両のエンジンルーム内の部品が事故による衝突で後退した際に、部品の後退の妨げにならないように揺動角が大きなものが要求されている。十字軸継手の揺動角を大きくするためには、ヨークのアームの幅を広げたり、アームの長さを長くする必要があった。   The cross joint is required to have a large swing angle so that when a part in the engine room of the vehicle moves backward due to a collision due to an accident, the backward movement of the part is not hindered. In order to increase the swing angle of the cross joint, it is necessary to widen the arm width of the yoke or increase the arm length.

また、近年では電動式の操舵補助装置が用いられ、車室内に操舵補助装置を設置するものが採用されている。   In recent years, an electric steering assist device is used, and a device that installs the steering assist device in the vehicle compartment is employed.

特にステアリングシャフトに操舵補助力が付与されるコラムアシスト型の電動パワーステアリング装置の場合、十字軸継手が伝達する操舵トルクが大きくなることから、十字軸継手は高い強度が要求され、鍛造成形品のヨークとシェル型のニードルベアリングとを有する十字軸継手が多く用いられる一方で、部品の軽量化が要求されている。   In particular, in the case of a column assist type electric power steering apparatus in which a steering assist force is applied to the steering shaft, the steering torque transmitted by the cross joint increases, so that the cross joint requires high strength. While a cross joint having a yoke and a shell type needle bearing is often used, there is a demand for weight reduction of parts.

本発明は、十字軸継手の揺動角を大きくするとともに、十字軸継手を小型で強度を確保することを実現する十字軸継手用ヨーク及び十字軸継手を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a cross shaft joint yoke and a cross shaft joint that increase the swing angle of the cross shaft joint and realize a small size and ensure strength of the cross shaft joint.

上記課題を解決するため、本発明は、
ヨークに形成された一対のアームの径方向に互いに対向して、同一方向に貫通した軸受保持孔がそれぞれ設けられ、一対のアームの先端側において、軸受保持孔の周囲に径方向に均一の肉厚を構成する円弧部と、軸受保持孔の中心を通りアームが伸びる方向の仮想中心線Ｋから所望の揺動角よりも大きな角度βを与えたときの法線と円弧状の端部が交差する点と、軸受保持孔中心を通りアームの幅方向に伸びる仮想中心線Ｌよりもアームの先端側に設けられた曲部とを結ぶ斜面が形成されていることを特徴とする十字軸継手用ヨークを提供する。 In order to solve the above problems, the present invention provides:
Bearing holding holes that pass through in the same direction are provided opposite to each other in the radial direction of the pair of arms formed on the yoke, and a radially uniform wall is formed around the bearing holding hole on the tip side of the pair of arms. The normal line and the arcuate end when the angle β larger than the desired swing angle is given from the virtual arc line K in the direction in which the arc extends through the center of the bearing holding hole and the arm extends. For a cross joint characterized in that a slope is formed to connect the point to bend and a curved portion provided on the tip side of the arm from a virtual center line L extending in the width direction of the arm through the center of the bearing holding hole Provide the yoke.

これにより、十字軸継手の一方のヨークのアームの先端と他方のヨークのアームを繋ぐ基部との干渉を防止することができる。また、十字軸継手の一方のヨークのアームの先端を短くした分だけ、他方のヨークのアームの長さを短くすることもできる。   Thereby, interference with the base part which connects the front-end | tip of the arm of one yoke of a cross joint, and the arm of the other yoke can be prevented. Further, the length of the arm of the other yoke can be shortened by the amount corresponding to the shortening of the tip of the arm of one yoke of the cross joint.

本発明によれば、 これにより、揺動角の大きな十字軸継手を構成することができる。また、十字軸継手の全長を短くすることで軽量かつ小型にすることを実現する十字軸継手用ヨーク及び十字軸継手を提供することができる。   According to the present invention, this makes it possible to configure a cross joint having a large swing angle. Further, it is possible to provide a yoke for a cross shaft joint and a cross shaft joint that can be reduced in weight and size by shortening the overall length of the cross shaft joint.

実施形態に係る十字軸継手の半裁縦断面図である。It is a half cut longitudinal cross-sectional view of the cross shaft coupling which concerns on embodiment. 実施形態に係るヨークの側面図である。It is a side view of the yoke which concerns on embodiment. 実施形態に係るヨークの縦断面図である。It is a longitudinal cross-sectional view of the yoke which concerns on embodiment. 図２中のIV矢視図である。It is IV arrow line view in FIG. 実施形態の作用を説明する図である。It is a figure explaining the effect | action of embodiment.

以下、本発明の実施形態について、図面を参照しながら詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

＜実施形態の構成＞
図１に示すように、実施形態の十字軸継手１は、互いに同じ形状をした対向する２つのヨーク２と、両ヨーク２を相対角度の変化自在に連結するスパイダー４と、各ヨーク２の軸受保持孔２１に圧入されてスパイダー４のトルク伝達軸４２を回転自在に支持するニードルベアリング５とを主要構成要素としている。 <Configuration of Embodiment>
As shown in FIG. 1, the cross joint 1 according to the embodiment includes two opposing yokes 2 having the same shape, a spider 4 that couples the yokes 2 so that the relative angle can be changed, and bearings of the yokes 2. The needle bearing 5 that is press-fitted into the holding hole 21 and rotatably supports the torque transmission shaft 42 of the spider 4 is a main component.

スパイダー４は鋼を素材とする鍛造・切削加工品であり、立方体形状の中央部４１と、中央部４１の外周４面のそれぞれの中央部から、それぞれその面に垂直な方向に延びる４本のトルク伝達軸４２とを有している。各トルク伝達軸４２の先端側の軸心部分にはピン孔４３が穿孔され、このピン孔４３に位置決め用の樹脂ピン６０が挿入されている。   The spider 4 is a forging / cutting product made of steel. The spider 4 extends from the center part 41 of the cubic shape and the four outer peripheral surfaces of the center part 41 in a direction perpendicular to the surface. And a torque transmission shaft 42. A pin hole 43 is bored in the axial center portion on the distal end side of each torque transmission shaft 42, and a positioning resin pin 60 is inserted into the pin hole 43.

（ヨーク）
ヨーク２は、鋼から成り、図２、図３に示すように、雌セレーション２２ａを有するシャフト挿入孔２２が穿設された円筒状の基部２３と、基部２３の一方の端部から相手側のヨーク２に向けて延び、基部２３の径方向に対向した一対のアーム２４、２５とを有している。両アーム２４、２５には上述した軸受保持孔２１が同軸に形成されている。雌セレーション２２ａは、ブローチ加工などによって形成することができる。 (yoke)
The yoke 2 is made of steel, and as shown in FIGS. 2 and 3, a cylindrical base portion 23 in which a shaft insertion hole 22 having a female serration 22a is formed, and the other end portion from one end portion of the base portion 23. It has a pair of arms 24 and 25 extending toward the yoke 2 and facing the base 23 in the radial direction. The bearing holding holes 21 described above are formed coaxially in both arms 24 and 25. The female serration 22a can be formed by broaching or the like.

図１に示すように、一方のヨーク２のシャフト挿入孔２２には、ステアリングシャフトなどの入力軸１０１が挿入され、他方のヨーク２のシャフト挿入孔２２には、インターミディエイトシャフトなどの出力軸１０２が挿入される。入力軸１０１および出力軸１０２の先端には、シャフト挿入孔２２の雌セレーション２２ａに対応する雄セレーション１０１ａ、１０２ａと、ボルト２９の軸部が係合する抜け止め溝１０１ｂ、１０２ｂとが形成されている。   As shown in FIG. 1, an input shaft 101 such as a steering shaft is inserted into the shaft insertion hole 22 of one yoke 2, and an output shaft 102 such as an intermediate shaft is inserted into the shaft insertion hole 22 of the other yoke 2. Is inserted. At the tips of the input shaft 101 and the output shaft 102, male serrations 101a, 102a corresponding to the female serrations 22a of the shaft insertion hole 22 and retaining grooves 101b, 102b with which the shaft portions of the bolts 29 are engaged are formed. Yes.

基部２３には、図３に示すようにスリット２６と、ねじ孔２７が形成され、ねじ孔２７に対向するスリット２６を挟んで反対側の部分には、図２に示すようにボルト孔２８が設けられている。入力軸１０１あるいは出力軸１０２は、ボルト２９がボルト孔２８から挿入され、ねじ孔２７にねじ込まれることにより、基部２３に締め付けられてヨーク２と一体化される。   As shown in FIG. 3, a slit 26 and a screw hole 27 are formed in the base 23, and a bolt hole 28 is formed on the opposite side of the slit 26 facing the screw hole 27 as shown in FIG. Is provided. The input shaft 101 or the output shaft 102 is integrated with the yoke 2 by being fastened to the base portion 23 by inserting the bolt 29 from the bolt hole 28 and screwed into the screw hole 27.

図４に示すように、アーム２４、２５の先端は、軸受保持孔２１の中心Ｏと同一の中心を持つ半径ｒで構成し、軸受保持孔２１の外周でアーム２４、２５の先端部分を１〜３ｍｍ程度で均一の肉厚となる円弧部３０と、後述する斜面３２、３２で構成されている。   As shown in FIG. 4, the tips of the arms 24, 25 are configured with a radius r having the same center as the center O of the bearing holding hole 21, and the tips of the arms 24, 25 are 1 on the outer periphery of the bearing holding hole 21. The arc portion 30 has a uniform thickness of about 3 mm and slopes 32 and 32 described later.

図４に示すように、アーム２４、２５の先端には、軸受保持孔２１の中心Ｏを通りアーム２４が伸びる方向（図４の紙面左右方向）の仮想中心線Ｋから、角度βに位置する法線と円弧部３０とが交差するＱ点の接線が、軸受保持孔２１の中心Ｏを通ってアーム２４の幅方向（図４の紙面上下方向）に伸びる仮想中心線Ｌよりもアーム２４、２５の先端側の曲部（Ｐ点）まで伸び、この接線に沿って斜面３２が設けられている。   As shown in FIG. 4, the tips of the arms 24 and 25 are positioned at an angle β from the virtual center line K in the direction in which the arm 24 extends through the center O of the bearing holding hole 21 (left and right direction in FIG. 4). The tangent at the point Q where the normal line and the circular arc part 30 intersect passes through the center O of the bearing holding hole 21 and extends beyond the imaginary center line L in the width direction of the arm 24 (vertical direction in FIG. 4). 25 extends to a curved portion (point P) on the tip side, and a slope 32 is provided along this tangent.

Ｐ点は、ニードルベアリング５を保持したときの保持力が低下しないように、アーム２４の幅方向の厚みがアーム２４の付け根からアーム２４の先端方向に向かってニードルベアリング５の円弧の両頂点を過ぎた位置まで同じ幅寸法とすることで、ニードルベアリング５の保持剛性を確保している。   At point P, the thickness in the width direction of the arm 24 extends from the root of the arm 24 toward the distal end of the arm 24 so that the holding force when the needle bearing 5 is held is not lowered. The holding rigidity of the needle bearing 5 is ensured by setting the same width dimension to the past position.

また、十字軸継手１の一方のヨーク２の揺動時のアーム２４とアーム２５と他方のヨーク２のアーム２４とアーム２５の付け根との干渉を防ぐために、アーム２４の斜面３２上のＱ点からの接線（図４の破線）の内側にアーム２４を構成する必要がある。例えば、揺動角αを６０度とする場合には、角度βは６０度よりも大きな角度にＰ点を設けて、そこからアーム２４の幅方向側面のＰ点まで斜面３２を設けている。 Further, in order to prevent interference between the arm 24 and the arm 25 and the arm 24 of the other yoke 2 and the base of the arm 25 when the one yoke 2 of the cross joint 1 is swung, a point Q on the inclined surface 32 of the arm 24 is provided. It is necessary to constitute the arm 24 on the inner side of the tangent line from (a broken line in FIG. 4). For example, when the swing angle α is 60 degrees, the angle P is provided at a point P larger than 60 degrees, and the slope 32 is provided from there to a point P on the side surface in the width direction of the arm 24.

斜面３２は、アーム２４の幅方向両側に設け、また、アーム２４、２５に同じものを設けると良い。更に、十字軸継手１を構成する２つのヨーク２に設けると良い。   The inclined surfaces 32 may be provided on both sides of the arm 24 in the width direction, and the same one may be provided on the arms 24 and 25. Further, it may be provided on the two yokes 2 constituting the cross joint 1.

斜面３２は、ヨーク２の鍛造又は鋳造において形成することができるが、鍛造又は鋳造の後、プレス加工でせん断したり、フライスカッタなどの回転切削工具でも形成することができる。   The inclined surface 32 can be formed by forging or casting of the yoke 2, but can be sheared by pressing after forging or casting, or can be formed by a rotary cutting tool such as a milling cutter.

（ニードルベアリング）
図１に示すように、ニードルベアリング５は、鋼板プレス成形品のシェル５１にニードルローラ５５を収容した構成をしている。ニードルベアリング５は、スパイダー４のトルク伝達軸４２に被さり、軸受保持孔２１に圧入されて公知のカシメ加工（図示せず）で抜け止めされている。 (Needle bearing)
As shown in FIG. 1, the needle bearing 5 has a configuration in which a needle roller 55 is accommodated in a shell 51 of a steel plate press-formed product. The needle bearing 5 is covered with the torque transmission shaft 42 of the spider 4 and is press-fitted into the bearing holding hole 21 and is prevented from being removed by a known caulking process (not shown).

シェル５１は、底部５２と、底部５２の周辺部から一方向に延びる円筒部５３と、底部５２とは反対側の円筒部５３の端部で、全周にわたって径方向内側に湾曲したカール部５４とを有している。シェル５１は、カール部５４側から、アーム２４、２５の外径側から内径側に向かって軸受保持孔２１に圧入される。   The shell 51 includes a bottom portion 52, a cylindrical portion 53 extending in one direction from the peripheral portion of the bottom portion 52, and an end portion of the cylindrical portion 53 on the opposite side of the bottom portion 52, and a curled portion 54 curved inward in the radial direction over the entire circumference. And have. The shell 51 is press-fitted into the bearing holding hole 21 from the curl portion 54 side toward the inner diameter side from the outer diameter side of the arms 24 and 25.

ニードルベアリング５は、トルク伝達軸４２のピン孔４３に嵌挿された樹脂ピン６０にシェル５１の底部５２が接触することにより、圧入時の位置決めがなされている。また、トルク伝達軸４２の基端には、ニードルベアリング５に塵埃などが入り込むことを防止すべく、全周にわたってカール部５４を覆い、接触するリップ６１ａを備えたシール６１が装着されている。   The needle bearing 5 is positioned at the time of press-fitting by the bottom 52 of the shell 51 coming into contact with the resin pin 60 fitted in the pin hole 43 of the torque transmission shaft 42. In addition, a seal 61 having a lip 61a that covers and contacts the curled portion 54 over the entire circumference is attached to the proximal end of the torque transmission shaft 42 in order to prevent dust and the like from entering the needle bearing 5.

＜実施形態の作用＞
例えば、実施形態に係る十字軸継手１がステアリング装置に用いられる場合、十字継手１は車両上のレイアウトによって、所定の揺動角に折れ曲がった状態に配置される。運転者がステアリング操作を行うと、ステアリングシャフト、即ち、入力軸１０１が所定の操舵トルクをもって回転し、その操舵トルクが十字軸継手１を介してインターミディエイトシャフト、即ち、出力軸１０２に伝達される。 <Operation of Embodiment>
For example, when the cruciform joint 1 according to the embodiment is used in a steering device, the cruciform joint 1 is arranged in a state of being bent at a predetermined swing angle depending on the layout on the vehicle. When the driver performs a steering operation, the steering shaft, that is, the input shaft 101 rotates with a predetermined steering torque, and the steering torque is transmitted to the intermediate shaft, that is, the output shaft 102 via the cross joint 1. .

また、十字軸継手１は車両のレイアウトによるものの通常の揺動角度は０〜３０度で使用される。しかし、車両のエンジンルーム内の部品が事故による衝突で後退した際に部品が後退し、十字軸継手に干渉若しくは、公知の衝撃吸収機構を有する中間軸と組合わせて使用し衝撃吸収した場合に、十字軸継手１の揺動角が大きくなる。   The cross joint 1 is used at a normal swing angle of 0 to 30 degrees although it depends on the layout of the vehicle. However, when the parts in the engine room of the vehicle retreat due to a collision due to an accident, the parts retreat and interfere with the cross shaft joint or when used in combination with an intermediate shaft having a known shock absorbing mechanism to absorb the shock. The swing angle of the cross joint 1 is increased.

この際、本願のヨーク２の構造とすることにより、通常の揺動角度０〜３０度よりも大きい揺動角の時の十字軸継手１の一方のヨーク２の揺動時のアーム２４、２５と他方のヨーク２のアーム２４とアーム２５の付け根との干渉を防ぐことで、事故後の操舵が可能になる。さらに、十字軸継手１の一方のヨーク２の揺動時のアーム２４、２５と他方のヨーク２のアーム２４とアーム２５の付け根との干渉を防ぐことで軸が不用意に回転することを防止できるので、衝撃吸収がスムーズに行うことができる。   At this time, by adopting the structure of the yoke 2 of the present application, the arms 24, 25 when one yoke 2 of the cross joint 1 swings when the swing angle is larger than the normal swing angle 0 to 30 degrees. By preventing interference between the arm 24 of the other yoke 2 and the base of the arm 25, steering after an accident becomes possible. Further, by preventing interference between the arms 24 and 25 of the one joint 2 of the cross joint 1 and the arm 24 of the other yoke 2 and the base of the arm 25, the shaft can be prevented from rotating inadvertently. Since it can, shock absorption can be performed smoothly.

また、Ｐ点は、軸受保持孔２１の仮想中心Ｌよりもアーム２４の先端側に位置することで、ニードルベアリング５を保持したときの保持力が低下しないように、アーム２４の幅方向の厚みがアーム２４の付け根からアーム２４の先端方向に向かってニードルベアリング５の円弧の両頂点を過ぎた位置まで均等に設けられニードルベアリング５の保持剛性を確保することで、過大な捩りトルクを受けたときのニードルベアリング５の抜け力を確保することで十字軸継手１の捩り強度を確保できる。   Further, the point P is positioned closer to the distal end side of the arm 24 than the virtual center L of the bearing holding hole 21, so that the holding force when holding the needle bearing 5 does not decrease in thickness in the width direction of the arm 24. Are provided evenly from the base of the arm 24 toward the tip of the arm 24 up to the position past both vertices of the arc of the needle bearing 5 to secure the holding rigidity of the needle bearing 5 and receive an excessive torsional torque. The torsional strength of the cross joint 1 can be secured by securing the pulling force of the needle bearing 5 at that time.

また更に、図５（ａ）に示すように、本願のヨーク２の構造とすることで、アーム２４、２５とアーム２４、２５の付け根の間の寸法Ａを小さくすることができる。また、図５（ｂ）に示すように、本願のヨーク２の構造とすることで、揺動角αにおいて十字軸継手１が回転した時に生じるヨーク２とヨーク２のクリアランス寸法Ｂを小さくすることができる。これにより、十字軸継手１の軸方向の長さを小さくすることができるので、小型で軽量の十字軸継手１とすることができる。 Furthermore, as shown in FIG. 5A, by adopting the structure of the yoke 2 of the present application, the dimension A between the arms 24 and 25 and the roots of the arms 24 and 25 can be reduced. Further, as shown in FIG. 5 (b), the yoke 2 of the present application is structured so that the clearance dimension B between the yoke 2 and the yoke 2 generated when the cross joint 1 rotates at the swing angle α is reduced. Can do. Thereby, since the length of the axial direction of the cross joint 1 can be made small, it can be set as the small and lightweight cross joint 1.

以上で具体的実施形態の説明を終えるが、本発明の態様はこれらに限られるものではない。   This is the end of the description of the specific embodiments, but the aspects of the present invention are not limited to these.

例えば、ヨークを、鋼板や鋼管を素材とする溶接構造品としてもよい。その他、十字軸継手やヨークの具体的構成や具体的形状についても、本発明の趣旨を逸脱しない範囲で適宜変更可能である。   For example, the yoke may be a welded structure made of a steel plate or steel pipe. In addition, the specific configuration and specific shape of the cross joint and yoke can be appropriately changed without departing from the spirit of the present invention.

１ 十字軸継手
２ ヨーク
４ スパイダー
５ ニードルベアリング
２１ 軸受保持孔
２２ シャフト挿入孔
２２ａ 雌セレーション
２３ 基部
２４、２５ アーム
２６ スリット
２７ ねじ孔
２８ ボルト孔
２９ ボルト
３２ 斜面
４１ 中央部
４２ トルク伝達軸
４３ ピン孔
５１ シェル
５２ 底部
５３ 円筒部
５４ カール部
５５ ニードルローラ
６０ 樹脂ピン
６１ シール
６１ａ リップ
１０１ 入力軸
１０１ａ 雄セレーション
１０１ｂ 抜け止め溝
１０２ 出力軸
１０２ａ 雄セレーション
１０２ｂ 抜け止め溝 DESCRIPTION OF SYMBOLS 1 Cross shaft coupling 2 Yoke 4 Spider 5 Needle bearing 21 Bearing holding hole 22 Shaft insertion hole 22a Female serration 23 Base 24, 25 Arm 26 Slit 27 Screw hole 28 Bolt hole 29 Bolt 32 Slope 41 Central part 42 Torque transmission shaft 43 Pin hole 51 Shell 52 Bottom 53 Cylindrical portion 54 Curled portion 55 Needle roller 60 Resin pin 61 Seal 61a Lip 101 Input shaft 101a Male serration 101b Retaining groove 102 Output shaft 102a Male serration 102b Retaining groove

Claims (2)

ヨークに形成された一対のアームの径方向に互いに対向して、同一方向に貫通した軸受保持孔がそれぞれ設けられ、一対のアームの先端側において、軸受保持孔の周囲に径方向に均一の肉厚を構成する円弧部と、前記軸受保持孔の中心を通り前記アームが伸びる方向の仮想中心線Ｋから所望の揺動角よりも大きな角度βを与えたときの法線と前記円弧状の端部が交差する点と、前記軸受保持孔の中心を通り前記アームの幅方向に伸びる仮想中心線Ｌよりも前記アームの先端側に設けられた曲部とを結ぶ斜面が形成されていることを特徴とする十字軸継手用ヨーク。   Bearing holding holes that pass through in the same direction are provided opposite to each other in the radial direction of the pair of arms formed on the yoke, and a radially uniform wall is formed around the bearing holding hole on the tip side of the pair of arms. An arc portion constituting a thickness, a normal when an angle β larger than a desired swing angle is given from a virtual center line K in a direction extending through the center of the bearing holding hole and the arm, and the arc-shaped end That a slope is formed connecting a point where the portions intersect each other and a curved portion provided on the tip side of the arm with respect to a virtual center line L extending in the width direction of the arm through the center of the bearing holding hole. A yoke for cross shaft joints. 請求項１に記載の十字軸継手用ヨークを備えることを特徴とする十字軸継手。   A cross shaft joint comprising the cross shaft joint yoke according to claim 1.
JP2016032663A 2016-02-24 2016-02-24 Cross joint Active JP6524937B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH053652U (en) * 1991-06-28 1993-01-19 日本精工株式会社 Universal yoke
JPH0532834U (en) * 1991-10-09 1993-04-30 三菱自動車工業株式会社 Structure of the joint yoke
JP2000035049A (en) * 1998-07-16 2000-02-02 Nippon Seiko Kk Universal joint
JP2003065353A (en) * 2001-08-29 2003-03-05 Hitachi Unisia Automotive Ltd Universal joint
JP2006275086A (en) * 2005-03-28 2006-10-12 Hikari Seiko Co Ltd Universal joint
JP2016003729A (en) * 2014-06-18 2016-01-12 日本精工株式会社 Yoke for cross shaft joint, and cross shaft joint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH053652U (en) * 1991-06-28 1993-01-19 日本精工株式会社 Universal yoke
JPH0532834U (en) * 1991-10-09 1993-04-30 三菱自動車工業株式会社 Structure of the joint yoke
JP2000035049A (en) * 1998-07-16 2000-02-02 Nippon Seiko Kk Universal joint
JP2003065353A (en) * 2001-08-29 2003-03-05 Hitachi Unisia Automotive Ltd Universal joint
JP2006275086A (en) * 2005-03-28 2006-10-12 Hikari Seiko Co Ltd Universal joint
JP2016003729A (en) * 2014-06-18 2016-01-12 日本精工株式会社 Yoke for cross shaft joint, and cross shaft joint

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