CRANK SHAFT OF RECIPROCATING ENGINE

• Main Author: ISHIHARA KOICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2015
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a crank shaft of a reciprocating engine capable of drastically improving flexural rigidity and torsional rigidity.SOLUTION: A crank shaft includes a journal part J to be a rotational center, a pin part P eccentric to the journal part J, and a crank arm part A connecting the journal part J and the pin part P. To the end surface of the arm part A on the side of the journal part J, a projection part Oj projecting in a shaft direction beyond the position of a journal thrust surface Jt is provided. 【課題】飛躍的に曲げ剛性とねじり剛性の向上を図ることができるレシプロエンジンのクランク軸を提供する。【解決手段】クランク軸は、回転中心となるジャーナル部Ｊと、このジャーナル部Ｊに対して偏心したピン部Ｐと、ジャーナル部Ｊとピン部Ｐをつなぐクランクアーム部Ａと、を有し、アーム部Ａのジャーナル部Ｊ側の端面に、ジャーナルスラスト面Ｊｔの位置を超えて軸方向に突出する凸部Ｏｊが設けられている。【選択図】図７