| 摘要 |
PURPOSE: A connecting rod for an offset crank shaft is provided to reduce the lateral force of a piston in an explosion stroke and in a compression stroke by using a connecting rod bent only for the compression stroke. CONSTITUTION: A connecting rod(1) consists of an upper body(2) and a lower body(3). Both side members(2) are connected by a pivot joint bent by a hinge shaft. In the expansion stroke of a piston(14), the connecting rod is kept in the straight stance. In the compression stroke of the piston, an inclined portion of the upper body ascends by being stuck to a support face of the lower body. If the connecting rod is bent in the compression stroke, the lateral force of the piston applied to an anti-thrust surface is reduced. Therefore, the offset of a crank shaft is increased.
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