| 摘要 |
PURPOSE:To enable reciprocating liner movement of a crank pin, by a method wherein a crank shaft mechanism is formed with an internal tooth gear, secured to an engine, a crank shaft, formed integrally with a planetary gear having a number of teeth ratio of two to one, and a crank having length being as long as the radius of the planetary gear. CONSTITUTION:A planetary gear 4, having a number of teeth ratio of two to one, is brought into roll contact with an interval tooth gear 3, secured to an engine, and a crank shaft 5 is integrally mounted to the center of the planetary gear. A piston 8 is connected to a crank pin 6, located in a position where arm of the crank has length being as long as the radius of the gear 4, through connecting rod 7. In which case, rolling of the planetary gear 4 over the internal tooth gear 3 through reciprocating movement of the piston 8 causes linear reciprocating movement of the crank pin 6, and the linear reciprocating movement is outputted as rotary movement from an output shaft 16 through eccentric rotation of the crank shaft 5. This constitution enables provision of an internal combustion engine which is compact and improves fuel consumption efficiency.
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