| 摘要 |
PROBLEM TO BE SOLVED: To prolong a life of a scroll type fluid apparatus by making a bearing disposed between a movable scroll and a driving shaft portion a plain bearing, making a bearing receiving portion of the movable scroll thin, reducing weight, and reducing load caused by revolution driving of the movable scroll. SOLUTION: On an upper portion of a sealed casing 2, a fixed scroll 4 and a movable scroll 6 are supported on an upper frame 8a fixed on the casing 2. A motor 10 is disposed at a lower portion of the casing 2. A boss 6a of the movable scroll 6 is movably supported on an eccentric drive pin 13 of a crank portion 15 formed integrally at an upper end portion of a driving shaft 12 of the motor 10 through a plain bearing 3. The driving shaft 12 is rotatably supported by a rolling bearing 5 serving as a second bearing which is installed on the upper frame 8a and a ball bearing 7 serving as a third bearing which is installed on a lower frame 104b. Such bearing structure is used to make the compressor light weight, compact, and durable. |
