| 摘要 |
<p>PURPOSE:To obtain the low cost lubricating oil charge device by a method wherein oil charge passages, respectively provided between an oil charge pump space communicating with a compression space and a main oil sump space and between the oil charge pump space and an auxiliary oil sump space, are opened and closed in response to the pressure change within the oil charge pump space. CONSTITUTION:The compression spaces 20a and 20b are provided at the both sides of a piston 7 which is driven by means of the swash plate 4 rigidly attached to a drive shaft 3. The compression space 20b is communicated with the oil charge pump space 25 of a lubricating oil pump 24 and the space 25 is also communicated respectively with the main and auxiliary oil sump spaces 26 and 27 via the primary and secondary oil charge passages 32 and 36. During the suction stroke of the compression space 20b, the pressure within the oil charge pump space 25 becomes negative to suck up the lubricating oil within the main oil sump space 26 into the oil charge pump space 25 through the primary oil charge passage 32. During the discharge stroke of the compression space 20b, the pressure within the oil charge pump space 25 becomes positive to push up the lubricating oil from the oil charge pump space 25 into the auxiliary oil sump space 27 to lubricate a radial bearing 6b and to supply the oil to thrust bearings 5a and 5b and the like.</p> |
