RECIPROCATING PUMP AND VACUUM PUMP

摘要

PROBLEM TO BE SOLVED: To provide a reciprocating pump that has a simple mechanism and is easily manufactured. SOLUTION: A diaphragm 56 constituting the reciprocating pump 35 partitions and forms an action chamber 351 between it and a valve presser 68. A columnar cam section 60 is integrated formed in a projecting part of a rotation driving shaft 33 projecting in a pump housing 34. An annular groove 50 is formed in the peripheral surface 601 of the cam section 60 so as to go round the peripheral surface 601 of the cam section 60. A roller 62 is rotatably supported on a cylinder section of a guide body 61 via a radial bearing 63. An end of the roller 62 as a movable body is inserted into the annular groove 50. COPYRIGHT: (C)2004,JPO&NCIPI