| 摘要 |
PURPOSE:To aim at the promotion of miniaturization and lightweightiness as well as to make improvements in airtight properties and abrasion resistance, by installing a one wavelength, sine wavelike guide groove or a cam mechanism on a piston outer wall being machined in cylindrical form, and inserting an output shaft into a through hole at the central part of both pistons. CONSTITUTION:Pistons 1a and 1b are symmetically set up in a cylinder 3, and an interval between these pistons comes to a combustion chamber 8. Rotary motion and reciprocation of these pistons 1a and 1b both are simultaneously performed by a one wavelength, sine wavelike cam mechanism by the guide groove 12 installed on an outer wall of these pistons 1a and 1b. Turning output is taken out of an output shaft 2 piercing through the central part of both these pistons 1a and 1b. Thus, miniaturization and lightweightiness are well promoted and, what is more, airtight properties and abrasion resistance are improved. |
