Cushion device and motorcycle
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorTakamasa Kamioka
Life of this patent
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Abstract
A cushion device includes a shock absorber and an accumulator. As a piston moves in a certain direction in a cylinder so that the shock absorber is compressed, oil in an oil chamber is discharged to the accumulator through an oil hose. The compression operation of the piston allows a slide member to slide and the capacity of an oil chamber is reduced. The oil in the oil chamber is discharged to a regulation unit through an oil hose. The regulation unit controls a valve by the pressure of the oil coming in from the oil chamber and applies resistance to the oil discharged from an oil chamber to an oil chamber.
Claims14
A cushion device comprising:
- a shock absorber including:
- a first member including a cylinder;
- a second member including a piston, the first and second members being arranged such that a relative position of the second member with respect to the first member is variable;
- a first oil chamber with a capacity that changes depending on the relative position of the second member;
- and
- a first fluid chamber with a capacity that changes depending on the relative position of the second member;
- an accumulator arranged to accumulate oil discharged from the shock absorber;
- an oil path connected to the first oil chamber;
- and
- a fluid path connected to the first fluid chamber;
- wherein
- the accumulator includes:
- a second oil chamber connected to the first oil chamber through the oil path;
- a second fluid chamber connected to the first fluid chamber through the fluid path;
- and
- a valve controlled by a pressure of fluid supplied to the second fluid chamber through the fluid path and arranged to apply resistance to a flow of oil discharged from the first oil chamber depending on the relative position of the second member;
- wherein
- the second fluid chamber is arranged to receive fluid from the first fluid chamber during a compression of the shock absorber.
Dependencies are inferred from the claim text.