| 摘要 |
This invention provides a front fork that can be efficiently be filled with oil when it is manufactured. To achieve this object, the front fork comprising: an outer tube (1); an inner tube (2) inserted expansibly and contractibly into the outer tube (1); a double-rod damper (70) disposed inside the outer tube (1) and the inner tube (2), the double-rod damper (70) including an upper chamber (3a) and a lower chamber (3b) defined therein into which that oil is contained; and a fork-inside oil chamber (71) defined by the outer tube (1), the inner tube (2), and the double-rod damper (70), into which oil and air are contained, the front fork comprising: a check valve (24) disposed in a lower portion (3b) of the double-rod damper (70), the check valve (24) allowing only one-way flow of oil from the fork-inside oil chamber (71) to the lower chamber (3b) of the double-rod damper (70); and an air vent passage (25) of a small sectional area disposed in an upper portion of the double-rod damper (70), the air vent passage (25) communicating the upper chamber (3a) of the double-rod damper (70) with the fork-inside oil chamber (71).
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