JPH09291977A - Drive shaft having excellent fatigue characteristic - Google Patents
Drive shaft having excellent fatigue characteristicInfo
- Publication number
- JPH09291977A JPH09291977A JP12934096A JP12934096A JPH09291977A JP H09291977 A JPH09291977 A JP H09291977A JP 12934096 A JP12934096 A JP 12934096A JP 12934096 A JP12934096 A JP 12934096A JP H09291977 A JPH09291977 A JP H09291977A
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- weight
- balance weight
- elastic body
- fatigue
- 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.)
- Withdrawn
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- Motor Power Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転駆動力を伝達
する駆動軸、例えば自動車車両のエンジン推進力を各車
輪に伝えるプロペラシャフト、ドライブシャフトといっ
た部品に関するもので、特に従来品より疲労特性が向上
し、サイズダウンによる軽量化が可能な駆動軸に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive shaft for transmitting a rotational drive force, for example, a propeller shaft and a drive shaft for transmitting engine propulsive force of an automobile vehicle to each wheel, and more particularly, it has fatigue characteristics better than conventional products. The present invention relates to a drive shaft that is improved and can be reduced in weight by reducing its size.
【０００２】[0002]
【従来の技術】駆動軸は、例えば自動車技術ハンドブッ
ク（第４分冊、生産・品質・整備編ｐ２３３ 自動車工
業会 １９９１年）に記載されるように、高速回転時に
振動が少ないことが重要な特性の１つである。その対策
として、バランスウエイトを取り付け、周方向の重量バ
ランスを調整した後に使用されることが一般的である。2. Description of the Related Art As described in, for example, the Automotive Engineering Handbook (4th Volume, Production / Quality / Maintenance p233 Automotive Industry Association 1991), it is important for a drive shaft to have little vibration during high-speed rotation. There is one. As a countermeasure, it is common to attach a balance weight and adjust the weight balance in the circumferential direction before use.
【０００３】このバランスウエイトの取付方法には溶接
が用いられ、自動車等の大量生産を前提とする産業分野
では、溶接の効率や経済性の観点から、スポット溶接あ
るいはプロジェクション溶接といった方法が用いられる
ことが多い。これらの方法によってバランスウエイトを
取り付けた駆動軸１を、駆動力を繰返し伝達することに
対応するねじり疲労試験に供すると、図１（ａ）に示す
ようにバランスウエイト２の溶接部からの疲労割れ５が
認められる場合がある。引張強さが５００ＭＰａ未満の
低強度材の疲労試験の場合は図１（ｂ）のようにジョイ
ント部品４を接合するジョイント部品接合部３からの疲
労割れ６が特性を決めていたのに対し、特開平２−１９
７５２５号公報に記載されるような材料強度を高め駆動
軸１の断面積を減らし、軽量化を進めた場合の疲労破壊
は、図１（ａ）に示すようにバランスウエイト溶接部か
らの疲労割れ５が支配的となり、ねじり疲労特性が劣化
して軽量化のための大きな障害であった。Welding is used to attach the balance weights, and in the industrial field premised on mass production of automobiles, etc., spot welding or projection welding is used from the viewpoint of welding efficiency and economy. There are many. When the drive shaft 1 to which the balance weight is attached by these methods is subjected to a torsional fatigue test corresponding to repeated transmission of driving force, fatigue cracks from the welded portion of the balance weight 2 as shown in FIG. 5 may be recognized. In the case of a fatigue test of a low-strength material having a tensile strength of less than 500 MPa, the fatigue crack 6 from the joint part joint part 3 for joining the joint part 4 determines the characteristics as shown in FIG. Japanese Patent Laid-Open No. 2-19
As described in Japanese Patent No. 7525, the fatigue fracture in the case where the material strength is increased, the cross-sectional area of the drive shaft 1 is reduced, and the weight reduction is promoted is as shown in FIG. 1 (a). 5 became dominant, and the torsional fatigue characteristics deteriorated, which was a major obstacle to weight reduction.
【０００４】バランスウエイト溶接部からの疲労割れの
主な原因としては、溶接部の幾何学形状に起因する応
力集中、溶接時の急熱急冷による金属組織の変化、
溶接残留応力などが考えられる。これらを解決するた
め、例えば、特開平６−２４６４３９、特開平６−２４
６４４０、あるいは特開平６−２４９２９１が開示され
ている。[0004] The main causes of fatigue cracking from a balance weight weld are stress concentration due to the geometrical shape of the weld, changes in the metal structure due to rapid heating and rapid cooling during welding, and the like.
Welding residual stress can be considered. To solve these problems, for example, JP-A-6-246439 and JP-A-6-24
6440 or JP-A-6-249291 is disclosed.
【０００５】特開平６−２４６４３９は、取付方法に従
来のスポット溶接やプロジェクション溶接を用いず、ア
ーク溶接を用いてバランスウエイトを取り付けたもので
ある。この方法によるとバランスウエイト取付部の疲労
強度はある程度改善されるが、その場合もバランスウエ
イト取付部から疲労破壊が発生することは避けられず、
完全な対策とはなっていない。In Japanese Patent Laid-Open No. 6-246439, the balance weight is attached by using arc welding instead of conventional spot welding or projection welding. According to this method, the fatigue strength of the balance weight mounting portion is improved to some extent, but in that case as well, fatigue fracture from the balance weight mounting portion cannot be avoided,
It is not a complete countermeasure.
【０００６】特開平６−２４６４４０は、バランスウエ
イト溶接部を加熱することで疲労特性を向上させるもの
である。バランスウエイト取付部の疲労強度は向上する
が、バランスウエイト溶接部周辺または軸全体を５５０
℃以上の高温に再加熱する必要があり、特別な設備と工
程が要求され、生産性と経済性に課題がある。Japanese Unexamined Patent Publication No. 6-246440 discloses heating a balance weight weld to improve fatigue characteristics. Although the fatigue strength of the balance weight mounting part is improved, the balance weight welded part or the entire shaft is 550
It needs to be reheated to a high temperature of ℃ or more, special equipment and process are required, and there are problems in productivity and economy.
【０００７】特開平６−２４９２９１は、バランスウエ
イトの取付けに、溶接による金属接合を用いず、接着接
合を用いてバランスウエイトを取り付けた駆動軸であ
る。これはバランスウエイト取付部の疲労強度低下の原
因である金属接合を排除する点で優れたものであるが、
接着剤の乾燥に時間を要するため、バランスウエイト固
定後の重量バランスの再評価を迅速に行えない点で、生
産性と経済性に課題がある。Japanese Unexamined Patent Publication No. 6-249291 discloses a drive shaft in which the balance weight is attached by using adhesive joining instead of metal joining by welding. This is excellent in eliminating the metal bonding that causes the fatigue strength of the balance weight mounting part to decrease,
Since it takes time to dry the adhesive, it is not possible to quickly re-evaluate the weight balance after fixing the balance weight, and there are problems in productivity and economy.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、このような
現状に鑑み前記課題を解決しようとするもので、バラン
スウエイトを駆動軸に取付ける際に溶接を用いずに固定
することによりバランスウエイト取付部の疲労強度低下
を避け、かつ短時間でバランスウエイトを固定でき生産
性と経済性を損なうことのない疲労特性に優れた駆動軸
を提供するものである。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems in view of the above circumstances, and the balance weight is attached by fixing the balance weight to the drive shaft without using welding. The purpose of the present invention is to provide a drive shaft which is capable of fixing the balance weight in a short time while avoiding a decrease in fatigue strength of a portion, and which has excellent fatigue characteristics without impairing productivity and economy.
【０００９】[0009]
【課題を解決するための手段】本発明の要旨は以下の通
りである。The gist of the present invention is as follows.
【００１０】金属帯の一部にウエイトを配置し、金属帯
と駆動軸との接触部分にヤング率３０００Ｎ／ｍｍ2以
下の絶縁性の弾性体を介在させたバランスウエイトを取
付けたことを特徴とする、疲労特性に優れた駆動軸。A weight is disposed on a part of the metal strip, and a balance weight having an insulating elastic body having a Young's modulus of 3000 N / mm 2 or less is attached to a contact portion between the metal strip and the drive shaft. A drive shaft with excellent fatigue characteristics.
【００１１】[0011]
【発明の実施の形態】本発明の主たる特徴の第一は、駆
動軸にバランスウエイトを固定する際に疲労強度低下の
原因となる溶接による固定法を用いず、金属帯で固定し
て、さらに駆動軸とバランスウエイトの接触部分に緩衝
材として弾性体を介在させることにより、バランスウエ
イト部の疲労強度を向上させたことにある。特徴の第二
は、ウエイトと金属帯を一体構造とし、さらに、絶縁性
物質で駆動軸とバランスウエイトの間を絶縁し、バラン
スウエイトの固定に抵抗溶接を用いることを可能とし、
生産性と経済性を損なうことなく製造することを可能と
したことにある。BEST MODE FOR CARRYING OUT THE INVENTION The first of the main features of the present invention is to fix a balance weight to a drive shaft without using a fixing method by welding which causes a decrease in fatigue strength, and to fix it with a metal band. The fatigue strength of the balance weight portion is improved by interposing an elastic body as a cushioning material in the contact portion between the drive shaft and the balance weight. The second characteristic is that the weight and the metal band are integrated with each other, and further, the drive shaft and the balance weight are insulated with an insulating material, and resistance welding can be used to fix the balance weight.
It is possible to manufacture without sacrificing productivity and economy.
【００１２】次に、本発明を更に詳細に説明する。Next, the present invention will be described in more detail.
【００１３】本発明の駆動軸に用いるバランスウエイト
は、図２（ａ）に一例を示すように、バランスウエイト
の固定力を与える金属帯部７と、その質量により回転振
れ回りを調整するウエイト部８、バランスウエイトと駆
動軸の間の緩衝と絶縁を受け持つ弾性体部９から成る。
駆動軸への取付に際しては、図２（ｂ）に例示するよう
に金属帯部７と弾性体部９を駆動軸の鋼管１に巻き付
け、ウエイト部８を目的の位置へ配置する。その後、金
属帯部の両端を抵抗溶接により接合し、駆動軸に固定す
る。これによりバランスウエイトは駆動軸上の所定位置
に固定される。The balance weight used for the drive shaft of the present invention is, as shown in FIG. 2 (a), a metal band portion 7 which gives a fixing force of the balance weight, and a weight portion which adjusts the whirling rotation by its mass. 8. The elastic body 9 is responsible for cushioning and insulating between the balance weight and the drive shaft.
When mounting on the drive shaft, as shown in FIG. 2B, the metal strip portion 7 and the elastic body portion 9 are wound around the steel pipe 1 of the drive shaft, and the weight portion 8 is arranged at a target position. After that, both ends of the metal strip are joined by resistance welding and fixed to the drive shaft. Thereby, the balance weight is fixed at a predetermined position on the drive shaft.
【００１４】以上のように、本発明の駆動軸では、バラ
ンスウエイトが弾性体を介して駆動軸へ固定されるため
にバランスウエイトに伝わるひずみが緩和され、バラン
スウエイト取付部からの疲労破壊が回避できる。さら
に、固定作業においても、絶縁性物質で駆動軸とバラン
スウエイトの間を絶縁しているので、金属帯の固定に生
産性の高い抵抗溶接を用いることができ、特開平６−２
４６４４０や特開平６−２４９２９１に比較して、短時
間で完了することが可能である。As described above, in the drive shaft of the present invention, since the balance weight is fixed to the drive shaft via the elastic body, the strain transmitted to the balance weight is relieved, and the fatigue fracture from the balance weight mounting portion is avoided. it can. Further, also in the fixing work, since the drive shaft and the balance weight are insulated from each other by the insulating material, the resistance welding with high productivity can be used for fixing the metal strip.
It can be completed in a short time as compared with 46440 and JP-A-6-249291.
【００１５】本発明に用いる弾性体には、ヤング率が３
０００Ｎ／ｍｍ2以下でかつ絶縁性のものを用いる。弾
性体のヤング率を３０００Ｎ／ｍｍ2以下に限定したの
は、ヤング率が３０００Ｎ／ｍｍ2超に硬くなると、緩
衝材としての効果が不十分で、弾性体自体が摩滅し、つ
いにはバランスウエイトの位置ずれを生じるからであ
る。絶縁性のものを用いる理由は、導電性のものを用い
ると、金属帯を抵抗溶接して固定する際に駆動軸との間
に電流が流れ、駆動軸とこの弾性体が溶接されてしまう
からである。絶縁抵抗の大きさについては、金属帯の抵
抗溶接の際に駆動軸との溶接接合が生じない大きさであ
れば、特に限定するものではない。弾性体の材質は、例
えば樹脂などを用いることが考えられるが、上記のヤン
グ率と絶縁性を持つ物質であれば、任意の物質を用いる
ことができる。また、この弾性体は予めバランスウエイ
トに接合して一体構造としておいてもよいし、バランス
ウエイトとは別に駆動軸に取付けておいてもよい。The Young's modulus of the elastic body used in the present invention is 3
Use an insulating material of 000 N / mm 2 or less. The Young's modulus of the elastic body is limited to 3000 N / mm 2 or less, because when the Young's modulus becomes harder than 3000 N / mm 2 , the effect as a cushioning material is insufficient, the elastic body itself is worn away, and finally the balance weight. This is because the displacement of The reason for using an insulating material is that if a conductive material is used, a current will flow between the drive shaft and the drive shaft when the metal strip is fixed by resistance welding, and the drive shaft and this elastic body will be welded. Is. The magnitude of the insulation resistance is not particularly limited as long as it does not cause welding and joining with the drive shaft during resistance welding of the metal strip. As the material of the elastic body, for example, resin may be used, but any substance may be used as long as it has the above Young's modulus and insulation. Further, this elastic body may be previously joined to the balance weight so as to have an integral structure, or may be attached to the drive shaft separately from the balance weight.
【００１６】バランスウエイトの金属帯部の材質および
形状については特に限定するものではない。本発明で用
いる金属帯の機能の本質は、駆動軸の回転時にかかる力
に抗してバランスウエイトを固定するのに必要な固定力
を提供することであり、必要な固定力を与える材質およ
び形状であれば、任意の金属を用いることができる。す
なわち、金属帯部に用いる金属の引張強さと断面積の積
が、駆動軸の回転時にバランスウエイトにかかる力より
大きいという条件を満たす範囲において、任意の材質お
よび形状が選択可能である。The material and shape of the metal strip of the balance weight are not particularly limited. The essence of the function of the metal strip used in the present invention is to provide a fixing force necessary for fixing the balance weight against the force applied during the rotation of the drive shaft, and the material and shape giving the required fixing force. If so, any metal can be used. That is, any material and shape can be selected as long as the product of the tensile strength and the cross-sectional area of the metal used for the metal strip is larger than the force applied to the balance weight when the drive shaft rotates.
【００１７】バランスウエイトのウエイト部の材質、形
状については、本発明では特に限定するものではない。
ウエイト部は、回転振れ回り調整を行うのに必要な質重
が確保されていればよい。例えば、金属帯部と同じ材質
でウエイト部の体積を大きくして質量を確保してもよい
し、帯部より密度の大きい材質を用いてもよい。The material and shape of the weight portion of the balance weight are not particularly limited in the present invention.
It is sufficient for the weight portion to secure the weight necessary for performing the whirling adjustment. For example, the same material as that of the metal strip may be used to increase the volume of the weight to secure the mass, or a material having a higher density than the strip may be used.
【００１８】ウエイト部と金属帯部は、同一素材から一
体加工してもよい。また、別々に作成した後に溶接や接
着などの方法で結合してもよいし、図３に示すように金
属帯部７と弾性体部９の間に挟んだり、あるいは弾性体
に内包させてもよい。ウエイト部８と金属帯部７が駆動
軸としての回転使用時に分離しない方法をとる限りにお
いて、本発明ではウエイト部と金属帯の加工方法や結合
方法については特に限定するものではない。The weight portion and the metal strip portion may be integrally processed from the same material. Alternatively, they may be separately formed and then joined by a method such as welding or adhesion, or may be sandwiched between the metal strip portion 7 and the elastic body portion 9 as shown in FIG. 3, or may be included in the elastic body. Good. In the present invention, the method of processing the weight portion and the metal strip and the joining method are not particularly limited, as long as the weight portion 8 and the metal strip portion 7 are not separated during rotation and use as the drive shaft.
【００１９】また、本発明において、駆動軸と接触する
弾性体の表面に、摩擦力を増大して固定力をより強固な
ものとするために、意図的に大きな粗度を与えたり、凹
凸を与えたり、粘着性の物質を予め塗布しておくことも
可能である。Further, in the present invention, in order to increase the frictional force and make the fixing force stronger, the surface of the elastic body which comes into contact with the drive shaft is intentionally provided with a large roughness or unevenness. It is also possible to apply or pre-apply a sticky substance.
【００２０】以上が本発明の要点であるが、バランスウ
エイトのウエイト部を目的の位置に配置してから金属帯
による固定が完了するまでの間の仮止め方法として、接
着等の方法を使用することが可能であり、本発明はウエ
イト部の仮止め方法について何らかの限定をするもので
はない。The above is the main point of the present invention. A method such as adhesion is used as a temporary fixing method from the time when the weight portion of the balance weight is arranged at a desired position until the fixing by the metal band is completed. However, the present invention does not limit the temporary fixing method of the weight portion.
【００２１】[0021]
【実施例】外径１１４．３ｍｍ、肉厚４．０ｍｍ、引張
強さ７３５ＭＰａクラスの高強度鋼管部分を持つ駆動軸
に、バランスウエイトを取付け、ねじり疲労試験を実施
した。Example A balance weight was attached to a drive shaft having a high-strength steel pipe part having an outer diameter of 114.3 mm, a wall thickness of 4.0 mm, and a tensile strength of 735 MPa class, and a torsional fatigue test was conducted.
【００２２】金属帯部には、幅３０ｍｍ×厚さ０．３ｍ
ｍの軟鋼を用いた。ウエイト部には、幅４０ｍｍ×長さ
８０ｍｍ×厚さ２．５ｍｍの軟鋼板を軸の外径に沿うよ
うに曲げ加工したものを用い、金属帯部と弾性体部の間
に挟んで接合している。このバランスウエイトを駆動軸
外部に巻き付け、ウエイト部を所定の位置に配置した
後、金属帯の両端をスポット溶接で溶接し、固定した。
弾性体部には、各種のヤング率を有する絶縁性の樹脂を
用いた。The metal strip has a width of 30 mm and a thickness of 0.3 m.
m of mild steel was used. For the weight portion, a soft steel plate having a width of 40 mm, a length of 80 mm, and a thickness of 2.5 mm is bent so as to be along the outer diameter of the shaft, and is sandwiched between the metal strip portion and the elastic body portion to be joined. ing. This balance weight was wound around the outside of the drive shaft, the weight portion was arranged at a predetermined position, and then both ends of the metal strip were welded by spot welding and fixed.
Insulating resins having various Young's moduli were used for the elastic body.
【００２３】また、比較材として、従来の取付け方法で
あるプロジェクション溶接を用いてバランスウエイトを
取付けた駆動軸と、バランスウエイトを取付けていない
駆動軸を作製し、これらも同様に試験に供した。Further, as comparative materials, a drive shaft having a balance weight attached thereto and a drive shaft having no balance weight attached thereto were produced by using projection welding which is a conventional attachment method, and these were similarly subjected to the test.
【００２４】ねじり疲労試験は、完全両振り、負荷トル
ク振幅：７ｋＮｍ、負荷トルク波形：正弦波、周波数：
６Ｈｚで行い、疲労破壊までの繰り返し回数を測定し
た。In the torsional fatigue test, complete double swing, load torque amplitude: 7 kNm, load torque waveform: sine wave, frequency:
It carried out at 6 Hz, and the number of repetitions until fatigue failure was measured.
【００２５】結果を表１および表２に示す。表１にはバ
ランスウエイトを取付けていない駆動軸の結果を示す。
バランスウエイトを取付けていない駆動軸の疲労割れは
ジョイント部品接合部より発生し、その破断寿命は平均
で８８８，０５９回であった。一方、表２に示すよう
に、プロジェクション溶接を用いてバランスウエイトを
取付けた比較例１１〜１５では、バランスウエイト取付
部から疲労破壊が発生し、破断寿命が著しく低く、バラ
ンスウエイトを取付けていない駆動軸の場合の平均破断
寿命を１とすると、０．３３程度の破断寿命である。こ
れに対し、本発明のバランスウエイトを取付けた本発明
例１〜５は、バランスウエイト取付部からの疲労破壊は
発生せず、バランスウエイトを取付けていない駆動軸と
同様に、ジョイント部品接合部において疲労破壊し、バ
ランスウエイトを取付けていない駆動軸と同等の破断寿
命であった。弾性体のヤング率が３０００Ｎ／ｍｍ2超
である比較例６〜１０では、弾性体が摩滅し、バランス
ウエイトの位置ずれを生じた。The results are shown in Tables 1 and 2. Table 1 shows the results for the drive shaft without the balance weight attached.
Fatigue cracking of the drive shaft without the balance weight attached occurred at the joint parts of the joint parts, and the rupture life was 888,059 times on average. On the other hand, as shown in Table 2, in Comparative Examples 11 to 15 in which balance weights were attached by using projection welding, fatigue fracture occurred from the balance weight attachment portion, the fracture life was extremely short, and the drive without the balance weights was performed. When the average breaking life of the shaft is 1, the breaking life is about 0.33. On the other hand, in Examples 1 to 5 of the present invention in which the balance weight of the present invention is attached, fatigue fracture does not occur from the balance weight attaching portion, and like the drive shaft to which the balance weight is not attached, in the joint part joint portion. Fatigue fracture occurred and the fracture life was equivalent to that of a drive shaft with no balance weight attached. In Comparative Examples 6 to 10 in which the Young's modulus of the elastic body was more than 3000 N / mm 2 , the elastic body was worn out and the balance weight was displaced.
【００２６】以上のように、本発明の駆動軸において
は、バランスウエイト部の疲労破壊が回避され、バラン
スウエイトを取付けない場合と同等の高い疲労強度が得
られることがわかる。As described above, in the drive shaft of the present invention, it is understood that the fatigue breakage of the balance weight portion is avoided, and the high fatigue strength equivalent to the case where the balance weight is not attached can be obtained.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【表２】 [Table 2]
【００２９】[0029]
【発明の効果】本発明を用いれば、回転振れ回りを低減
するためのバランスウエイトを取付けた駆動軸におい
て、ねじり疲労特性を低下させていたバランスウエイト
取付部からの疲労破壊発生を回避することができ、駆動
軸の部品全体としてのねじり疲労特性を向上させること
ができる。EFFECTS OF THE INVENTION According to the present invention, in a drive shaft having a balance weight for reducing whirling, it is possible to avoid the occurrence of fatigue fracture from the balance weight mounting portion, which has deteriorated the torsional fatigue characteristics. Therefore, the torsional fatigue characteristics of the entire drive shaft component can be improved.
【図１】（ａ）、（ｂ）は駆動軸に対して主要な性能評
価であるねじり疲労試験を実施した場合の疲労破壊発生
位置を示す図である。1A and 1B are diagrams showing a fatigue fracture occurrence position when a torsional fatigue test, which is a main performance evaluation, is performed on a drive shaft.
【図２】（ａ）は本発明の駆動軸に用いるバランスウエ
イトの構造の一例を示す図である。（ｂ）は、（ａ）の
バランスウエイトを鋼管に巻き付けたときの断面図であ
る。FIG. 2A is a diagram showing an example of a structure of a balance weight used for the drive shaft of the present invention. (B) is sectional drawing when the balance weight of (a) is wound around the steel pipe.
【図３】本発明の駆動軸に用いるバランスウエイトにお
ける、ウエイト部の接合形態の一例を示す図である。FIG. 3 is a diagram showing an example of a joining configuration of weight portions in the balance weight used for the drive shaft of the present invention.
１ 鋼管（駆動軸） ２ バランスウエイト ３ ジョイント部品接合部 ４ ジョイント部品 ５ バランスウエイト溶接部からの疲労割れ ６ ジョイント部品接合部からの疲労割れ ７ 金属帯部 ８ ウエイト部 ９ 弾性体部 1 Steel pipe (driving shaft) 2 Balance weight 3 Joint part joint part 4 Joint part 5 Balance weight Fatigue crack from weld part 6 Fatigue crack from joint part joint part 7 Metal band part 8 Weight part 9 Elastic part
Claims (1)
帯と駆動軸との接触部分にヤング率３０００Ｎ／ｍｍ2
以下の絶縁性の弾性体を介在させたバランスウエイトを
取付けたことを特徴とする、疲労特性に優れた駆動軸。1. A weight is arranged on a part of the metal strip, and a Young's modulus of 3000 N / mm 2 is provided on a contact portion between the metal strip and the drive shaft.
A drive shaft with excellent fatigue characteristics, which is equipped with the following balance weights with an insulating elastic body interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12934096A JPH09291977A (en) | 1996-04-26 | 1996-04-26 | Drive shaft having excellent fatigue characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12934096A JPH09291977A (en) | 1996-04-26 | 1996-04-26 | Drive shaft having excellent fatigue characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09291977A true JPH09291977A (en) | 1997-11-11 |
Family
ID=15007196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12934096A Withdrawn JPH09291977A (en) | 1996-04-26 | 1996-04-26 | Drive shaft having excellent fatigue characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09291977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017156207A1 (en) * | 2016-03-11 | 2017-09-14 | Dana Automotive Systems Group, Llc | Device for securing balancing weights to a shaft |
-
1996
- 1996-04-26 JP JP12934096A patent/JPH09291977A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017156207A1 (en) * | 2016-03-11 | 2017-09-14 | Dana Automotive Systems Group, Llc | Device for securing balancing weights to a shaft |
| CN108779830A (en) * | 2016-03-11 | 2018-11-09 | 德纳汽车系统集团有限责任公司 | Device for counterweight to be fixed to axis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030701 |