Co-rotating scroll compressor

Abstract

A co-rotating scroll compressor that can achieve a longer operating life of a synchronous driving mechanism is provided. This compressor includes the synchronous driving mechanism that transmits driving force from a driving-side scroll member to a driven-side scroll member such that the driving-side scroll member and the driven-side scroll member perform rotation movement in a same direction at a same angular velocity. The synchronous driving mechanism includes a crankpin (15) and a rolling bearing (18) that rotatably supports a shaft portion (15b) of the crankpin (15). The rolling bearing (18) includes an inner ring (18b) fitted to the shaft portion (15b) and an outer ring (18a) fitted to a first side plate (27) that supports the shaft portion (15b). A sealing member (40) that extends to a side portion of the inner ring (18b) is fixed to a side portion of the outer ring (18a).

1 - 9 . (canceled) 
     
     
         10 . A co-rotating scroll compressor comprising:
 a driving-side scroll member that is driven to rotate around a rotation axis by a driving unit and has a spiral driving-side wall disposed on a driving-side end plate;   a driven-side scroll member in which a spiral driven-side wall corresponding to the driving-side wall is disposed on a driven-side end plate and the driven-side wall engages with the driving-side wall to form a compression space; and   a synchronous driving mechanism that transmits driving force of the driving unit to the driven-side scroll member such that the driving-side scroll member and the driven-side scroll member perform rotation movement in a same direction at a same angular velocity, wherein   the synchronous driving mechanism comprises a crankpin and a rolling bearing that rotatably supports a shaft portion of the crankpin,   the rolling bearing comprises an inner ring fitted to the shaft portion and an outer ring fitted to a bearing supporting member that supports the shaft portion,   a sealing member that extends to a side portion of the inner ring is fixed to a side portion of the outer ring, and   a predetermined gap is provided between the sealing member and the side portion of the inner ring.   
     
     
         11 . The co-rotating scroll compressor according to  claim 10 , wherein, in the sealing member, an inclined surface is formed at an inner peripheral edge facing the side portion of the inner ring such that a distance from the side portion of the inner ring increases toward an inner peripheral side of the sealing member. 
     
     
         12 . The co-rotating scroll compressor according to  claim 11 , wherein the inclined surface is formed only on an outer peripheral side of revolution movement of the rolling bearing at the inner peripheral edge of the sealing member. 
     
     
         13 . The co-rotating scroll compressor according to  claim 10 , wherein the crankpin includes a first shaft portion to which the inner ring is fitted and a second shaft portion that is continuously provided from the first shaft portion and has a larger diameter than a diameter of the first shaft portion, and
 a stepped portion that partitions the first shaft portion and the second shaft portion is provided at a portion facing the inner peripheral end of the sealing member or at a farther position when viewed from the side portion of the inner ring than the position facing the inner peripheral end.   
     
     
         14 . A co-rotating scroll compressor comprising:
 a driving-side scroll member that is driven to rotate around a rotation axis by a driving unit and has a spiral driving-side wall disposed on a driving-side end plate;   a driven-side scroll member in which a spiral driven-side wall corresponding to the driving-side wall is disposed on a driven-side end plate and the driven-side wall engages with the driving-side wall to form a compression space; and   a synchronous driving mechanism in which the driving-side scroll member transmits driving force to the driven-side scroll member such that the driving-side scroll member and the driven-side scroll member perform rotation movement in a same direction at a same angular velocity, wherein   the synchronous driving mechanism comprises a crankpin and a rolling bearing that rotatably supports a shaft portion of the crankpin,   the rolling bearing comprises an inner ring fitted to the shaft portion and an outer ring fitted. to a bearing supporting member that supports the shaft portion,   a sealing member that extends to a side portion of the outer ring is fixed to a side portion of the inner ring, and   a predetermined gap is provided between the sealing member and the side portion of the outer ring.   
     
     
         15 . The co-rotating scroll compressor according to  claim 14 , wherein, on a side portion of the sealing member, a side wall portion that is connected to the bearing supporting member to surround an outer peripheral side of the sealing member is provided. 
     
     
         16 . A co-rotating scroll compressor comprising:
 a driving-side, scroll member that is driven to rotate around a rotation axis by a driving unit and has a spiral driving-side wall disposed on a driving-side end plate;   a driven-side scroll member in which a spiral driven-side wall corresponding to the driving-side wall is disposed on a driven-side end plate and the driven-side wall engages with the driving-side wall to form a compression space; and   a synchronous driving mechanism in which the driving-side scroll member transmits driving force to the driven-side scroll member such that the driving-side scroll member and the driven-side scroll member perform rotation movement in a same direction at a same angular velocity, wherein   the synchronous driving mechanism comprises a crankpin and a rolling bearing that rotatably supports a shaft portion of the crankpin,   the rolling bearing comprises an inner ring fitted to the shaft portion and an outer ring fitted to a bearing supporting member that supports the shaft portion, and   a chip seal that is disposed on an outer peripheral side of the rolling bearing with respect to a center axis of the shaft portion of the crankpin to seal a space on a side of the rolling bearing between the chip seal and a wall portion facing the bearing supporting member is provided.   
     
     
         17 . The co-rotating scroll compressor according to  claim 10 , further comprising a snap ring provided on a lateral side of the sealing member to fix the sealing member, wherein
 the snap ring has a substantially C-letter shape with one open portion, and   the open portion is arranged such that the open portion is directed to a rotation center of the bearing supporting member.   
     
     
         18 . The co-rotating scroll compressor according to  claim 14 , further comprising a snap ring provided on a lateral side of the sealing member to fix the sealing member, wherein
 the snap ring has a substantially C-letter shape with one open portion, and   the open portion is arranged such that the open portion is directed to a rotation center of the bearing supporting member.   
     
     
         19 . The co-rotating scroll compressor according to  claim 16 , further comprising a snap ring provided on a lateral side of the sealing member to fix the sealing member, wherein
 the snap ring has a substantially C-letter shape with one open portion, and   the open portion is arranged such that the open portion is directed to a rotation center of the bearing supporting member.   
     
     
         20 . A co-rotating scroll compressor comprising:
 a driving-side scroll member that is driven to rotate around a rotation axis by a driving unit and has a spiral driving-side wall disposed on a driving-side end plate;   a driven-side scroll member in which a spiral driven-side wall corresponding to the driving-side wall is disposed on a driven-side end plate and the driven-side wall engages with the driving-side wall to form a compression space; and   a synchronous driving mechanism in which the driving-side scroll member transmits driving force to the driven-side scroll member such that the driving-side scroll member and the driven-side scroll member perform rotation movement in a same direction at a same angular velocity, wherein   the synchronous driving mechanism comprises a crankpin and a rolling bearing that rotatably supports a shaft portion of the crankpin,   the rolling bearing comprises an inner ring fitted to the shaft portion and an outer ring fitted to a bearing supporting member that supports the shaft portion,   a sealing wall portion fixed to the bearing supporting member to seal the rolling bearing from a lateral side is provided at a side portion of the rolling bearing, and   a recess formed to a lateral side from the outer ring in an annular shape to correspond to the outer ring is provided to the sealing wall portion.