Scroll-type compressor

Abstract

Provided is a pin-ring mechanism (26) that supports a driving-side scroll member and a driven-side scroll member such that the driving-side scroll member and the driven-side scroll member are in relative revolving motion. The pin-ring mechanism (26) includes: a pin member (30); a ring member (34) that has an inner ring (34b) which comes into contact with the pin member (30), a plurality of balls (34c) which roll on the inner ring (34b), and a retainer (34d); and a bush 36 that is disposed on an inner periphery of the inner ring (34b), and receives a component of force in a circumferential direction of the inner ring (34b) from the pin member (30) to rotate together with the inner ring (34b).

1 . A scroll-type compressor comprising:
 a first scroll member that has a spiral first wall body disposed on a first end plate;   a second scroll member that has a second wall body disposed on a second end plate and corresponds to the first wall body, and forms a compression space in engagement with the first wall body; and   a synchronous driving mechanism that supports the first scroll member and the second scroll member such that the first scroll member and the second scroll member are in relative revolving motion, wherein   the synchronous driving mechanism includes:
 a pin member that is fixed to the first wall body and/or the second wall body, and protrudes toward the second end plate and/or the first end plate which the pin member faces; 
 a ring member that has an inner ring which is fixed to the first end plate and/or the second end plate, and which comes into contact with the pin member, a plurality of rolling bodies which roll on the inner ring, and a retainer which holds respective relative positions of the rolling bodies; and 
 an intermediate member that transmits circumferential power from the pin member to the inner ring. 
   
     
     
         2 . The scroll-type compressor according to  claim 1 , wherein
 the intermediate member is disposed on an inner periphery of the inner ring, and rotates together with the inner ring.   
     
     
         3 . The scroll-type compressor according to  claim 2 , wherein
 the intermediate member is in a substantial disk shape formed so as to come into contact with the inner periphery of the inner ring, and is provided with a cutout having a clearance between the pin member and the intermediate member at a position corresponding to the pin member.   
     
     
         4 . The scroll-type compressor according to  claim 1 , wherein
 the intermediate member is an elastic member provided on an outer periphery of the pin member.   
     
     
         5 . The scroll-type compressor according to  claim 4 , wherein
 the elastic member is disposed at a central position in an axial direction of the inner ring.   
     
     
         6 . The scroll-type compressor according to  claim 1 , wherein
 a rolling bearing that supports the pin member rotatably around an axis is provided between the pin member, and the first wall body and/or the second wall body to which the pin member is fixed.   
     
     
         7 . The scroll-type compressor according to  claim 6 , wherein
 the intermediate member is made of resin, and   the pin member is made of metal.