| 摘要 |
PURPOSE:To make miniaturization in a scroll type hydraulic mechanism attainable, by making up a scroll body into an involute form, and forming a constant circular arc in the inward, while connecting contact points of two curves so smoothly. CONSTITUTION:A fixed scroll body and a movable scroll body consisting of each of the same formed scroll bodies, being engaged with each other in a slip of 180 deg., are constituted so as to make the movable side revolvable at a constant radius rho to the fixed side. Both these scroll bodies are made up of an inner side curve 602 consisting of an involute outer side curve 601 and a circular arc of a radius R and a circular arc of a radius (r) connecting body curves smoothly. These radii R and (r) are prescribed as in an expression I, provided they are set to a base radius of the involute curve.
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