| 摘要 |
PROBLEM TO BE SOLVED: To provide a trigger-type liquid discharger which enables reducing of the number of components and eliminating of a drag acting on the pulling operation of a trigger lever. SOLUTION: This trigger-type liquid discharger is equipped with the trigger lever 2, a piston cylinder mechanism 3 to be actuated by the operation of the trigger lever 2 and a liquid flow path 4 communicating with a liquid discharge orifice and a liquid suction orifice. In addition, the interior of a cylinder part 31 of the piston cylinder mechanism 3 communicates with the liquid flow path 4 through a communication path, and a check valve body 5 for controlling the liquid flow, is arranged inside the liquid flow path 4. The check valve body 5 is made up of a single member consisting of a first elastic part 51 which is stretchable and linar with a plurality of folding parts, a suction side valve part 53 connecting with one end side of the first elastic part 51, and a second elastic part 55 connecting with the other end side of the first elastic part 51 through a discharge side valve part 54. Besides, the coefficient of spring of the first elastic part 51 is lower than the coefficient of spring of the second elastic part 55. COPYRIGHT: (C)2010,JPO&INPIT
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