| 摘要 |
PROBLEM TO BE SOLVED: To provide a plunger unit which achieves excellent operability and good usability. ! SOLUTION: A plunger unit 1 includes: a case 10; a plunger pin 14 which is held by the case 10 so that a length of a portion protruding to the exterior of the case 10 may vary; a biasing member 20 which is disposed in the body case 10 and biases the plunger pin 14 in a direction such that the plunger pin 14 protrudes to the exterior of the case 10; an operation part 18 which may be pressed from the exterior of the body case 10; and mechanisms 12, 18, 22a, 22b, 23a, 23b, 24a, 24b which reduce the protruding length of the plunger pin 14 against a biasing force of the biasing member 20 by the operation part 18 being pressed. ! COPYRIGHT: (C)2015,JPO&INPIT |
