| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a liquid pumping device which can prevent a shaft between first and second spring receptacles from deforming or breaking. <P>SOLUTION: A sealed vessel 2 includes a working fluid introducing port 11, a working fluid discharge port 13, a liquid inflow port 16 and a liquid discharge port 17. A float 3, a change valve 4 and a snap mechanism 5 are built in the sealed vessel 2. A coil spring 38 of the snap mechanism 5 is externally fitted to a continuous shaft between first and second spring receptacles 40 and 42 and one end of the coil spring 38 is coupled to the first spring receptacle 40 sliding on the shaft. The continuous shaft between the first and the second spring receptacles 40 and 42 includes: a recess 46 provided in the first spring receptacle 40; a shaft member 48 provided in the second spring receptacle 42 and inserted to the recesses 46 provided in the first spring receptacles 40; and an elastic members 49 disposed between the inner periphery or deep wall of the recess 46 and the outer circumference or distal end of the shaft member 48. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
