| 摘要 |
A suspension spring (S) and a double-rod damper (D) are installed in the interior of a front fork which comprises a body-side tube (1) and a wheel-side tube (2). The double-rod damper (D) comprises a piston (5) housed in a cylinder (3), and an upper rod (41) and a lower rod (42) connected to the piston (5). The upper rod (41) is formed to have a smaller diameter than the lower rod (42). By providing an orifice (6) which allows working oil in an upper oil chamber (R1) formed around the upper rod (41) to flow into a reservoir (R) while causing the pressure in the upper oil chamber (R1) to increase, expansion and contraction of air bubbles mixed the into working oil in the cylinder (3) is prevented, thereby improving the response of a damping force generated in the front fork.
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