| 摘要 |
PROBLEM TO BE SOLVED: To obtain a small-sized valve rotator which can easily rotate a valve.SOLUTION: A valve rotator device 10 is equipped with a first member 50 which can relatively rotate to a stem portion 101; a second member 120 which can integrally rotate with the stem portion; and a spring member 20 between them. The spring member 20 is formed by connecting a plurality of units U1 and U2 composed of a base linear material part extending along a wall surface of the first member 50, a first coupling linear material part extending on one cylinder surface of two cylinder surfaces, a driving linear material part extending along a wall surface of the second member 120, and a second coupling linear material part extending on the other cylinder surface of the two cylinder surfaces. Each unit is fallen down in a circumferential direction, by the compression of the spring member 20 due to the first member 50 and the second member 120 when a valve is opened/closed, and rotates the stem portion through the second member 120 by displacement in a circumferential direction of the driving linear material part at that time.SELECTED DRAWING: Figure 1 |
