| 摘要 |
The front fork ( 100 ) includes a fork main body ( 3 ) in which an inner tube ( 2 ) is inserted into an outer tube ( 1 ) to enable free expansion and contraction, a damper ( 10 ) generates a damping force when a rod ( 5 ) moves within a cylinder ( 4 ) as the fork main body ( 3 ) expands and contracts, an air chamber ( 15 ) delimited by a free piston ( 16 ), which compensates for variation in the internal volume of the cylinder ( 4 ) caused by invasion and retreat of the rod ( 5 ) into and from the cylinder ( 4 ), a pressurizing spring ( 19 ) housed in the air chamber ( 15 ), which biases the free piston ( 16 ) in a direction for enlarging the air chamber ( 15 ), and a sub-spring ( 30 ) which biases the free piston ( 16 ) in a direction for shrinking the air chamber ( 15 ) in opposition to the pressurizing spring ( 19 ).
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