US 11,440,448 B2 · Suspension mechanism, multi-suspension mechanism and damper

Abstract

There are improved a vibration absorption characteristic and an impact absorption characteristic. In a suspension mechanism 1 of the present invention, first and second dampers (150, 160) are suspended in parallel between an upper frame (120) and a lower frame (110) with mounting angles different from each other. For this reason, the smaller mounting angle the damper has, the smaller a vertical component of damping force becomes, and the damping force which acts on the upper frame (120) and the lower frame (110) which move up and down relatively is moderate in effectiveness as compared with a case of disposing all the dampers at the same mounting angle. Thus, a sense of incongruity in which strong damping force acts abruptly is suppressed and the vibration absorption characteristic and the impact absorption characteristic are improved, which leads to improvement in ride comfort.

Claims12

Dependent claims

A suspension mechanism disposed between a vehicle body structure and a seat, the suspension mechanism comprising:

a link mechanism which supports an upper frame mounted on the seat side to be movable up and down relative to a lower frame mounted on a vehicle body structure side;
a spring mechanism which elastically biases the upper frame relative to the lower frame;
and
a damper which exhibits damping force to absorb energy when the upper frame moves up and down relative to the lower frame,
wherein the damper is
a telescopic one including a cylinder and a piston which moves relatively in the cylinder in accordance with up-down movement of the upper frame relative to the lower frame, and
suspended in plurality in parallel at different mounting angles between the upper frame and the lower frame, and
wherein in at least one of the plurality of dampers, a moving zone of the piston in the cylinder corresponding to a predetermined up-down movement range including a balanced point when the upper frame moves up and down relative to the lower frame is a free running zone where the damping force does not act.

5 more elements

Dependencies are inferred from the claim text.

Suspension mechanism, multi-suspension mechanism and damper

Life of this patent

Suspension mechanism, multi-suspension mechanism and damper

Life of this patent

Abstract

Claims12