| 摘要 |
PROBLEM TO BE SOLVED: To provide a force feeding device of liquid, which can smoothly operate while preventing the intrusion of foreign substances into the clearance between a first shaft and a sliding bearing. SOLUTION: A snapping mechanism 5 comprises a rocking shaft 35 supported in a closed container 2, a float arm 34 and a sub-arm 37 rotatable about the rocking shaft 35, the first shaft 39 supported by the float arm 34, a second shaft 41 supported by the sub-arm 37, a first spring bearing 40 rotatable about the first shaft 39, a second spring bearing 42 rotatable about the second shaft 41, a coil spring 38 fixed between the first spring bearing 40 and the second spring bearing 42, and a sliding bearing 46 arranged between the first shaft 39 and the first spring bearing 40. The sliding bearing 46 is formed such that the inside shape to slide on the first shaft 39 is formed so as to coincide with the outside shape of the first shaft 39, and is partially arranged only on the portion where the first shaft 39 comes into pressure contact with the first spring bearing 40. COPYRIGHT: (C)2008,JPO&INPIT
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