| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a simply structured angular acceleration control valve which generates an oil pressure complying with a deviation, which is generated in an angular acceleration of an objective shaft, from a predetermined target angular acceleration. SOLUTION: An angular acceleration control valve 1 is provided with a rotary shaft 3 rotating according to the rotation of an objective shaft because of transmission from a spur wheel 30 on one end side, a flywheel 5 fitted around a part of the rotary shaft 3 relatively rotationally, a torsion spring 7 connecting the flywheel 5 and a rotary disc 6, which rotates integrally with the rotary shaft 3, together, and a friction ring 62 which applies frictional resistance to one face of the flywheel 5 when its rotation is constrained by means of the rotary disc 6. On the fitting circumference between the rotary shaft 3 and the flywheel 5, a variable throttle, which increases/ reduces its throttle area when a relative angular displacement exceeds a predetermined dimension, is constructed of an oil guiding hole 37 and a drain long groove 53. According to the change in the throttle area of the variable throttle, a feeding oil pressure P0 from an oil source is regulated, so that an oil pressure Pf complying with a deviation from a target angular acceleration of the objective shaft connected to the rotary shaft 3 can be provided.</p> |
