| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a valve structure capable of satisfying both of the embodiment of optimum damping characteristics and the assurance of stroke length. <P>SOLUTION: A valve disk includes a port whose downstream side end is openably closed by a leaf valve and, at the same time, is movably connected to a shaft member which penetrates a shaft core part, an upstream side chamber or a downstream side chamber which are defined by the valve disk can be communicated with the inner peripheral side of the valve disk via a communication path formed on the valve disk, the downstream side chamber or the upstream side chamber defined by the valve disk can be communicated with the inner circumferential side of the valve disk that is the outer circumferential side of the shaft member via the communication path formed on the shaft member, by the shaft member, an energizing means which energizes the leaf valve is composed of a washer spring, the valve disk moves against a spring force of the washer spring under a pressure in the upstream side chamber when a piston speed is in a middle and high speed region, thereby, the communication path formed on the valve disk is communicated with the communication path formed on the shaft member and the communication to the downstream side chamber, of the upstream side chamber is permitted. <P>COPYRIGHT: (C)2012,JPO&INPIT |
