| 摘要 |
<p>PURPOSE: To prevent abrasion and a clearance between both of stationary and orbiting scroll blades by arranging a blade protection disc having a moving hole and a damping weight between the stationary and orbiting scroll blades. CONSTITUTION: A pin guide hole 321 bored in the center of a bush 320 is fitted in a drive pin 212 formed in the upper stage of a rotary shaft 210. The bush 320 is fitted in a boss 310 formed under the orbiting scroll 3. A centrifugal force generation part 6 which is arranged between the upper stage of the rotary shaft 210 and the lower stage of the boss 310 is so constituted that a moving hole 600 is eccentrically bored in a disc 60 concentric to the rotary shaft 210 and a centrifugal member 610 is arranged in the outer circumferential edge of the disc 60 opposed thereto. On the other hand, a sliding auxiliary bush 330 is formed without rotating in the moving hole 600. A spring for elastically pressurizing the auxiliary bush 300 is arranged in the moving hole 600.</p> |
