| 摘要 |
PROBLEM TO BE SOLVED: To easily set a primary proportional characteristic of damping force characteristics of a compression stroke and/or an extension stroke, in a front fork.SOLUTION: A front fork 10 includes an annular ring 110 vertically movably loaded along the axial direction of a hollow pipe 22 in an annular groove 100 on the outer periphery of a partition wall part 22A of the hollow pipe 22, and slidingly contacting with the inner periphery of an inner tube 12. The annular ring 110 forms an annular flow passage 111 between a groove bottom part 101 of the annular groove 100 on the outer periphery of the partition wall part 22A in the hollow pipe 22 and itself, forms upper notch grooves 112 penetrating in the radial direction on an upper surface of becoming near an oil storage chamber 27 in the annular groove 100, and forms lower notch grooves 113 penetrating in the radial direction on a lower end surface of becoming near an oil chamber 25 in the annular groove 100. The groove bottom part 101 of the annular groove 100 on the outer periphery of the partition wall part 22A in the hollow pipe 22, is formed in a tapered shape along the axial direction of the hollow pipe 22. |
