DIRECT-COUPLED CRANK DEVICE FOR TWO LINEARLY RECIPROCATING MOVABLE BODIES

摘要

PROBLEM TO BE SOLVED: To allow a lateral vibration caused by backlash of a planetary gear mechanism and to ensure the smooth reciprocating movement of both movable bodies by providing an articulated structure to a connecting rod for coupling the both movable bodies in a crank device directly coupling the two reciprocating movable bodies and provided with the planetary gear mechanism. SOLUTION: A compressor direct-coupled to an internal combustion engine is provided with a crank device A and transmits the linear reciprocating movement of a piston 2a of the internal combustion engine E to a piston 2b of the compressor C as it is so as to reciprocate it linearly. A connecting rod 6 whose intermediate part is connected to a shaft part 12 of a planetary gear 10 in the crank device A is provided with an articulated structure 6a bent parallel to the revolution plane of the planetary gear 10 in a position toward the piston 2a side than the position in the shaft 12 side. The articulated structure 6a has engagement parts matched parallel to the revolution plane of the planetary gear 10 formed in the connecting rod 6a1 in the piston 2a side and the connecting rod 6a2 in the piston 2b side and pivot them in crossing at right angles with the revolution plane of the planetary gear 10 by engagement pins 6a3.