JPH0532834U - Structure of the joint yoke - Google Patents

Structure of the joint yoke

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Publication number
JPH0532834U
JPH0532834U JP8202491U JP8202491U JPH0532834U JP H0532834 U JPH0532834 U JP H0532834U JP 8202491 U JP8202491 U JP 8202491U JP 8202491 U JP8202491 U JP 8202491U JP H0532834 U JPH0532834 U JP H0532834U
Authority
JP
Japan
Prior art keywords
cross shaft
joint yoke
steel pipe
welded portion
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8202491U
Other languages
Japanese (ja)
Inventor
実 榊原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP8202491U priority Critical patent/JPH0532834U/en
Publication of JPH0532834U publication Critical patent/JPH0532834U/en
Pending legal-status Critical Current

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  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

(57)【要約】 【目的】 プロペラシャフトのジョイントヨークの基端
と鋼管との溶接部に加わる応力を小さくする。 【構成】 基端1cが鋼管2に嵌合されて溶着固定さ
れ、先端1aに十字軸が連結されるプロペラシャフトの
ジョイントヨーク1の、基端側に形成される肉抜穴1d
と十字軸側とを画成する壁1eを、鋼管との溶接部3と
十字軸との間の距離の半分の位置よりも十字軸側に近づ
けた構造としたものである。
(57) [Summary] [Purpose] To reduce the stress applied to the weld between the base end of the joint yoke of the propeller shaft and the steel pipe. [Structure] A lightening hole 1d formed on the base end side of a joint yoke 1 of a propeller shaft having a base end 1c fitted and fixed by welding to a steel pipe 2 and a cross shaft connected to a tip 1a.
The wall 1e that defines the cross shaft side is closer to the cross shaft side than the half position of the distance between the welded portion 3 with the steel pipe and the cross shaft.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial application]

本考案は、プロペラシャフトのジョイントヨークの構造に関する。 The present invention relates to a structure of a joint yoke of a propeller shaft.

【0002】[0002]

【従来の技術】[Prior Art]

プロペラシャフトは、エンジンの駆動力を変速機から終減速装置に伝達する軸 である。一般に、前置エンジン後輪駆動方式の車両(FR車)において、後車軸 は、後輪懸架装置により車体に支持されており、積載荷重の変化、路面の凹凸に より発生する上下動、加減速走行時の前後動、駆動反力によるワインドアップ等 の動きを生じる。その結果、変速機と終減速装置間の軸交差角と距離の変化が生 じる。従って、プロペラシャフトは、これらの動きに対して円滑な作動をするた め、自在継手と軸方向長さを伸縮自在とする滑り継手とを必要とする。 The propeller shaft is a shaft that transmits the driving force of the engine from the transmission to the final reduction gear. Generally, in a front-engine rear-wheel drive vehicle (FR vehicle), the rear axle is supported on the vehicle body by a rear-wheel suspension system, which causes vertical movements and acceleration / deceleration caused by changes in the loading load and road surface irregularities. Movements such as back-and-forth during driving and wind-up due to driving reaction force occur. As a result, a change in the axis crossing angle and the distance between the transmission and the final reduction gear occurs. Therefore, the propeller shaft needs a universal joint and a sliding joint that can expand and contract in the axial direction in order to smoothly operate in response to these movements.

【0003】 プロペラシャフトは、一般に自在継手、滑り継手、鋼管等により構成され、車 両の構造や要求性能に応じて2継手形、3継手形、4継手形等が採用される。2 継手形は、プロペラシャフトの基本的なもので、乗用車や一般のトラック等に採 用されている。自在継手は、交差した2軸の一方から他方へ、交差角が変化して も、トルクと回転の伝達とを可能とするもので、代表的なものとしてフック式継 手がある。フック式継手は、入力軸ヨーク、十字軸、出力軸ヨークから構成され 、入力軸ヨーク→十字軸→出力軸ヨークの順に回転とトルクとが伝達される。Propeller shafts are generally composed of universal joints, slip joints, steel pipes, etc., and two-joint type, three-joint type, four-joint type and the like are adopted according to the structure and required performance of the vehicle. The 2-joint type is a basic type of propeller shaft and is used in passenger cars and general trucks. The universal joint enables transmission of torque and rotation from one of the two intersecting axes to the other, even if the intersecting angle changes. A typical example is a hook joint. The hook type joint is composed of an input shaft yoke, a cross shaft, and an output shaft yoke, and rotation and torque are transmitted in the order of the input shaft yoke, the cross shaft, and the output shaft yoke.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

図3及び図4は、入力軸ヨーク、出力軸ヨーク等のジョイントヨーク5と、当 該ジョイントヨーク5に接続される鋼管6の一部を示し、ジョイントヨーク5は 、基端5aが鋼管6の一端に嵌合され、且つ溶着されている。ジョイントヨーク 5は、図示のように複雑な形状をなしているために回転力を後方に伝達する際に 回転方向に対して不均一な応力が加わる。例えば、十字軸(図示せず)から入力 された不均一な応力によるジョイントヨーク5の基端5aと鋼管6との溶接部7 における回転軸廻りの応力分布(kgf/mm2 )は、図5の実線で示すような略瓢箪 形となる。この結果、プロペラシャフトが溶接部7において破損し易いという問 題がある。3 and 4 show a joint yoke 5 such as an input shaft yoke and an output shaft yoke, and a part of a steel pipe 6 connected to the joint yoke 5. The joint yoke 5 has a steel pipe 6 having a base end 5a. It is fitted to one end and welded. Since the joint yoke 5 has a complicated shape as shown in the drawing, when the rotational force is transmitted rearward, non-uniform stress is applied in the rotational direction. For example, the stress distribution (kgf / mm 2 ) around the rotation axis in the welded portion 7 between the base end 5a of the joint yoke 5 and the steel pipe 6 due to the non-uniform stress input from the cross shaft (not shown) is shown in FIG. It becomes a substantially gourd shape as shown by the solid line. As a result, there is a problem that the propeller shaft is easily damaged at the welded portion 7.

【0005】 そこで、本願考案者が、ジョイントヨーク5と鋼管6との溶接部7の回転軸廻 りにおける応力分布の不均一の要因を追求した結果、十字軸側と肉抜穴5b側と の間を画成する壁5cの位置が、溶接部7の応力を大きく左右することが判明し た。即ち、十字軸からジョイントヨーク5に入力された回転方向の不均一な応力 は、後方に伝達されるに従って徐々に平滑化されて円形の応力分布に近づき、後 部において略真円に近い形状となる。このとき壁5cは、入力に対して回転方向 に発生する不均一な応力を平滑化する作用があることが明らかになった。従って 、壁5cの位置が溶接部7から遠くなり前方即ち、十字軸側にあれば、それだけ 早期に後方に伝達される応力分布が円形に近づくこととなる。Then, as a result of the inventors of the present invention pursuing a factor of non-uniformity of the stress distribution around the rotation axis of the welded portion 7 of the joint yoke 5 and the steel pipe 6, the cross shaft side and the lightening hole 5b side are obtained. It was found that the position of the wall 5c that defines the space greatly influences the stress of the welded portion 7. That is, the non-uniform stress in the rotational direction input to the joint yoke 5 from the cross shaft is gradually smoothed as it is transmitted rearward and approaches a circular stress distribution, and the rear part has a shape close to a substantially perfect circle. Become. At this time, it was revealed that the wall 5c has a function of smoothing the non-uniform stress generated in the rotational direction with respect to the input. Therefore, if the position of the wall 5c is farther from the welded portion 7 and is on the front side, that is, on the cross axis side, the stress distribution transmitted to the rear side is closer to a circle earlier.

【0006】 ところが、従来のジョイントヨーク5の壁5cの位置は、十字軸の中心(Y軸 で示す)から当該壁5cの前面(十字軸側の面)5c’までの距離Aと、当該前 面5c’から溶接部7までの距離Bとの比が約53対47程度の位置にあり、溶 接部7からY軸までの距離の1/2(半分)よりも溶接部7側に近寄った位置に 形成されている。ジョイントヨーク5の基端5aを長くして溶接部7の位置を後 方にずらすことも1つの対策ではあるが、ジョイントヨーク5は、強度を必要と するために鍛造により形成され、従って、基端5aに形成する肉抜穴5bを深く することが困難であり、また、基端5aを長くするとそれだけ重量が嵩む等の問 題がある。However, the position of the wall 5c of the conventional joint yoke 5 is the distance A from the center of the cross shaft (indicated by the Y axis) to the front surface (the surface on the cross shaft side) 5c 'of the wall 5c and the front thereof. The ratio of the distance B from the surface 5c 'to the weld 7 is about 53 to 47, and the distance from the weld 7 to the Y-axis is closer to the weld 7 side than 1/2 (half). It is formed in the open position. Although it is one measure to lengthen the base end 5a of the joint yoke 5 and shift the position of the welded portion 7 rearward, the joint yoke 5 is formed by forging in order to require strength, and therefore, There are problems that it is difficult to deepen the lightening hole 5b formed in the end 5a, and that the longer the base end 5a is, the heavier the weight becomes.

【0007】 本考案は上述の点に鑑みてなされたもので、ジョイントヨークの重量を増加す ることなく鋼管との溶接部の回転軸廻りの応力をより小さくするようにしたジョ イントヨークの構造を提供することを目的とする。The present invention has been made in view of the above points, and has a joint yoke structure in which the stress around the rotation axis of the welded portion with the steel pipe is made smaller without increasing the weight of the joint yoke. The purpose is to provide.

【0008】[0008]

【課題を解決するための手段】 上記目的を達成するために本考案によれば、基端が鋼管に嵌合されて溶着固定 され、先端に十字軸が連結されるプロペラシャフトのジョイントヨークの、基端 側に形成される肉抜穴と十字軸側とを画成する壁を、前記鋼管との溶接部と前記 十字軸との間の距離の半分の位置よりも前記十字軸側に近づけた構造としたもの である。[Means for Solving the Problems] According to the present invention to achieve the above object, a joint yoke of a propeller shaft having a base end fitted and fixed to a steel pipe by welding, and a cross shaft connected to the tip, The wall defining the lightening hole formed on the base end side and the cross shaft side is closer to the cross shaft side than the position of half the distance between the welded portion with the steel pipe and the cross shaft. It is a structure.

【0009】[0009]

【作用】[Action]

十字軸からジョイントヨークに伝達された回転力に伴う回転方向に不均一の応 力は、十字軸側に近づけて形成された壁により早期に平滑化されて後方に伝達さ れる。これにより当該ジョイントの鋼管との溶接部の回転軸廻りに発生する応力 が小さくなり、当該溶接部の耐久性が向上する。 The non-uniform response in the rotational direction due to the torque transmitted from the cross shaft to the joint yoke is smoothed early by the wall formed close to the cross shaft and transmitted to the rear. As a result, the stress generated around the axis of rotation of the welded portion of the joint with the steel pipe is reduced, and the durability of the welded portion is improved.

【0010】[0010]

【実施例】【Example】

以下本考案の一実施例を添付図面に基づいて詳述する。 図1及び図2においてジョイントヨーク1は、側面視略Y字状をなし、その先 端1a、1aが二股とされ、且つ対向して孔1b、1bが穿設されている。これ らの対向する孔1b、1bには十字軸がベアリング(共に図示せず)を介して回 転可能に嵌合される。尚、孔1b、1bの中心(十字軸の中心)を通る直線をY で示す。また、基端1cは、円形をなし、端面中央には肉抜孔1dが形成されて いる。この肉抜穴1dの底1eは、十字軸側と基端1c側とを画成する壁(以下 「壁1e」という)とされている。 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In FIGS. 1 and 2, the joint yoke 1 has a substantially Y shape in a side view, its front ends 1a and 1a are bifurcated, and holes 1b and 1b are formed facing each other. A cross shaft is rotatably fitted into these opposing holes 1b, 1b via a bearing (both not shown). A straight line passing through the centers of the holes 1b, 1b (center of the cross axis) is indicated by Y 1. Further, the base end 1c has a circular shape, and a lightening hole 1d is formed at the center of the end face. The bottom 1e of the lightening hole 1d is a wall that defines the cross shaft side and the base end 1c side (hereinafter referred to as "wall 1e").

【0011】 先端1a、1aの対向する内面1a’、1a’は、壁1eから先端近傍まで僅 かに拡径する緩やかなテーパ面とされ、更に先端1a”、1a”が内面1a’、 1a’よりも僅かに大きな角をなすテーパ面とされており、十字軸及び当該十字 軸を介して連結されるジョイントヨークとの干渉を防止するようになっている。 また、ジョイントヨーク1は、鍛造品であるために肉抜穴1dの側壁も底面から 開口端に向かって拡径された形状となっている。このジョイントヨーク1は、基 端1cが鋼管2の開口端に嵌合され、且つ溶着固定されている。尚、基端1cと 鋼管2との溶接部を符号3で示す。The inner surfaces 1a ′, 1a ′ of the tips 1a, 1a that face each other are gently tapered surfaces that slightly expand from the wall 1e to the vicinity of the tips, and the tips 1a ″, 1a ”have inner surfaces 1a ′, 1a. It has a taper surface with an angle slightly larger than that of the ', so as to prevent interference with the cross shaft and the joint yoke connected via the cross shaft. Since the joint yoke 1 is a forged product, the side wall of the lightening hole 1d also has a shape in which the diameter increases from the bottom surface toward the opening end. The base end 1c of the joint yoke 1 is fitted into the open end of the steel pipe 2 and fixed by welding. A welded portion between the base end 1c and the steel pipe 2 is indicated by reference numeral 3.

【0012】 そして、ジョイントヨーク1の壁1eは、先端1a、1aの孔1b、1bの中 心即ち、Y軸と溶接部3との距離の1/2(半分)よりも僅かにY軸(十字軸) 側に近寄った位置に形成されている。即ち、溶接部3がY軸から従来と同じ距離 にあれば、壁1eを当該Y軸に近づけることにより当該溶接部3から壁1eを遠 ざけたことになる。勿論、当該壁1eは、従来のジョイントヨークの壁と同様十 字軸及び当該十字軸を介して連結されるジョイントヨークと干渉しないように形 成されている。The wall 1e of the joint yoke 1 is slightly larger than the center of the holes 1b and 1b of the tips 1a and 1a, that is, ½ (half) the distance between the Y axis and the welded portion 3 (Y axis). It is formed at a position closer to the (cross axis) side. That is, if the welded portion 3 is at the same distance from the Y axis as in the conventional case, the wall 1e is moved away from the welded portion 3 by bringing the wall 1e closer to the Y axis. Of course, the wall 1e is formed so as not to interfere with the joint yoke connected via the cross-shaped shaft and the cross shaft, like the wall of the conventional joint yoke.

【0013】 以下に作用を説明する。 十字軸(図示せず)からジョイントヨーク1の先端1a’、1a’に入力され る回転力は、鋼管2を経て後部に伝達され、当該回転力に伴う回転方向に不均一 な応力は、壁1eにより平滑化されて基端1c側に伝達される。このとき壁1e が十字軸側に近づいているために図3に示す従来のジョイントヨークと同じ応力 が加わっても当該応力は、それだけ早期に平滑化され、後方に伝達される応力分 布がより円形に近づくことになる。この結果、溶接部3の回転軸廻りの応力が小 さくなる。The operation will be described below. The rotational force input from the cross shaft (not shown) to the tips 1a ', 1a' of the joint yoke 1 is transmitted to the rear portion through the steel pipe 2, and the non-uniform stress in the rotational direction due to the rotational force is generated by the wall. It is smoothed by 1e and transmitted to the base end 1c side. At this time, since the wall 1e is closer to the cross shaft side, even if the same stress as that of the conventional joint yoke shown in FIG. 3 is applied, the stress is smoothed earlier and the stress distribution transmitted to the rear side is further improved. It will approach a circle. As a result, the stress around the rotation axis of the welded portion 3 becomes small.

【0014】 因みに、Y軸から壁1eの前面(十字軸側の面)1e’までの距離Aと当該前 面1e’から溶接部3までの距離Bとの比を43対57とした場合における溶接 部3における回転軸廻りの応力分布を図5に破線で示す。この図から明らかなよ うに溶接部3の回転軸廻りにおける応力が従来に比して可成り小さくなる。そし て、壁1eを当該位置から溶接部3側に近づけるに伴い、当該溶接部3の回転軸 廻りの応力分布が図5の1点鎖線で示すように大きくなる。Incidentally, when the ratio of the distance A from the Y axis to the front surface (the surface on the cross axis side) 1e ′ of the wall 1e and the distance B from the front surface 1e ′ to the welded portion 3 is 43:57. The stress distribution around the rotation axis in the welded portion 3 is shown by the broken line in FIG. As is apparent from this figure, the stress around the rotation axis of the welded portion 3 becomes considerably smaller than in the conventional case. Then, as the wall 1e is brought closer to the welded portion 3 side from the position, the stress distribution around the rotation axis of the welded portion 3 becomes larger as shown by the one-dot chain line in FIG.

【0015】[0015]

【考案の効果】[Effect of the device]

以上説明したように本考案によれば、基端が鋼管に嵌合されて溶着固定され、 先端に十字軸が連結されるプロペラシャフトのジョイントヨークの、基端側に形 成される肉抜穴と十字軸側とを画成する壁を、前記鋼管との溶接部と前記十字軸 との間の距離の半分の位置よりも前記十字軸側に近づけたことにより、前記溶接 部の回転軸廻りにおける応力分布を小さくすることが可能となり、耐久性の向上 が図られる。また、ジョイントヨークの重量の増加を来すこともない等の優れた 効果がある。 As described above, according to the present invention, the lightening hole formed on the base end side of the joint yoke of the propeller shaft, the base end of which is fitted and fixed by welding to the steel pipe and the cross shaft is connected to the tip. And the cross shaft side are closer to the cross shaft side than the position of a half of the distance between the welded portion with the steel pipe and the cross shaft. It is possible to reduce the stress distribution in the and the durability is improved. Moreover, there is an excellent effect that the weight of the joint yoke is not increased.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案に係るジョイントヨークの一実施例を示
す一部切欠側面図である。
FIG. 1 is a partially cutaway side view showing an embodiment of a joint yoke according to the present invention.

【図2】図1の一部切欠平面図である。FIG. 2 is a partially cutaway plan view of FIG.

【図3】従来のジョイントヨークの一部切欠側面図であ
る。
FIG. 3 is a partially cutaway side view of a conventional joint yoke.

【図4】図3の一部切欠平面図である。4 is a partially cutaway plan view of FIG. 3. FIG.

【図5】図1及び図3の各ジョイントヨークの鋼管部と
の溶接部に加わる回転軸廻りの応力分布を示すグラフで
ある。
5 is a graph showing a stress distribution around a rotation axis applied to a welded portion of each joint yoke of FIGS. 1 and 3 with a steel pipe portion.

【符号の説明】[Explanation of symbols]

1 ジョイントヨーク 1a 先端 1c 基端 1e 壁 2 鋼管 3 溶接部 1 joint yoke 1a tip 1c base end 1e wall 2 steel pipe 3 welded part

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 基端が鋼管に嵌合されて溶着固定され、
先端に十字軸が連結されるプロペラシャフトのジョイン
トヨークの、基端側に形成される肉抜穴と十字軸側とを
画成する壁を、前記鋼管との溶接部と前記十字軸との間
の距離の半分の位置よりも前記十字軸側に近づけたこと
を特徴とするジョイントヨークの構造。
1. A base end is fitted and fixed to a steel pipe by welding.
Between the welded portion of the steel pipe and the cross shaft, a wall that defines a hollow hole formed on the proximal end side and the cross shaft side of the joint yoke of the propeller shaft to which the cross shaft is connected at the tip is formed. The structure of the joint yoke is characterized in that it is closer to the cross shaft side than the position of half the distance.
JP8202491U 1991-10-09 1991-10-09 Structure of the joint yoke Pending JPH0532834U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8202491U JPH0532834U (en) 1991-10-09 1991-10-09 Structure of the joint yoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8202491U JPH0532834U (en) 1991-10-09 1991-10-09 Structure of the joint yoke

Publications (1)

Publication Number Publication Date
JPH0532834U true JPH0532834U (en) 1993-04-30

Family

ID=13762963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8202491U Pending JPH0532834U (en) 1991-10-09 1991-10-09 Structure of the joint yoke

Country Status (1)

Country Link
JP (1) JPH0532834U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017150551A (en) * 2016-02-24 2017-08-31 日本精工株式会社 Yoke for cross shaft joint and cross shaft joint

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639629B2 (en) * 1978-09-28 1981-09-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639629B2 (en) * 1978-09-28 1981-09-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017150551A (en) * 2016-02-24 2017-08-31 日本精工株式会社 Yoke for cross shaft joint and cross shaft joint

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