| 摘要 |
PURPOSE:To prevent occurrence of abnormal wear at sliding pants of a compressor, by disposing ribs for connecting a cylinder block fastening section and a bearing section of a motor case at proper positions so that clamping stress caused by bolts at the time of clamping a cylinder block may not acted in a locally concentrated manner. CONSTITUTION:A motor case 2 is composed of a cylinder block fastening section 9 where a cylinder block 7 is fixed by bolts 8 by the intermediary of a gasket and a bearing section 10 for journaling a turning shaft. Ribs 11 disposed around the bearing section 10 to form oil dropping slots 12 serve to connect the cylinder block fastening section 9 and bearing section 10 together in a unitary manner. Here, the ribs 11 are formed to have an angle of 30-40 degrees to the bolts 8, so that the clamping stress of the bolts 8 is acted to both of the cylinder block 7 and motor case 2. Thus, it is enabled to balance the distorsion and hence to prevent occurrence of abnormal wear. |
