US 7,461,716 B2 · Power unit supporting structure of scooter type vehicle

Abstract

A power unit supporting structure for minimizing rotational vibration about the center of gravity of a power unit, and secondary vibration in the direction of a cylinder axis line of the power unit. The structure includes a link mechanism having a first frame side link swingably connected to a first pivot on the side of a rear frame, and first power unit side links swingably connected to a third pivot on a side of the power unit. The first frame side link and the first power unit side links are swingably connected by a second pivot. A first line segment connecting the first pivot and the second pivot is disposed approximately perpendicular to a cylinder axis line. A second line segment connecting the second pivot and the third pivot is approximately parallel to a third line segment connecting the third pivot and the center of gravity of the power unit.

Claims20

Dependent claims

A power unit supporting structure of a scooter vehicle in which a power unit including a cylinder axis line tilted forward and provided with a balancer shaft for reducing a vibration, is swingably connected to a vehicle frame through a link mechanism, the link mechanism of the power unit supporting structure comprising:

a frame side link swingably connected to a frame side pivot which is provided to the vehicle frame;
a power unit side link swingably connected to a power unit side pivot which is provided to a power unit side, the frame side link and the power unit side link being swingably connected to each other by a link pivot,
wherein a first line segment connecting the frame side pivot and the link pivot is disposed approximately perpendicular to the cylinder axis line, and
a second line segment connecting the power unit side pivot and the link pivot is approximately parallel to a third line segment connecting the power unit side pivot and a center of gravity of the power unit.

1 more element

a frame side link swingably connected to a frame side pivot which is provided to the vehicle frame;
a power unit side link swingably connected to a power unit side pivot which is provided to a power unit side, the frame side link and the power unit side link being swingably connected to each other by a link pivot,
wherein a first line segment connecting the frame side pivot and the link pivot is disposed approximately perpendicular to the cylinder axis line, and
a second line segment connecting the power unit side pivot and the link pivot is approximately parallel to a third line segment connecting the power unit side pivot and a center of gravity of the power unit,
wherein the power unit side link is substantially triangular-shaped.

2 more elements

a frame side link swingably connected to a frame side pivot which is provided to the vehicle frame;
a power unit side link swingably connected to a power unit side pivot which is attached to an upper protruding portion formed on the power unit, the frame side link and the power unit side link being swingably connected to each other by a link pivot,
wherein a first line segment connecting the frame side pivot and the link pivot is disposed approximately perpendicular to the cylinder axis line, and
a second line segment connecting the power unit side pivot and the link pivot is approximately parallel to a third line segment connecting the power unit side pivot and a center of gravity of the power unit,
wherein the link pivot is positioned forward of the power unit side pivot, and above the frame side pivot.

2 more elements

Dependencies are inferred from the claim text.

Power unit supporting structure of scooter type vehicle

Life of this patent

Power unit supporting structure of scooter type vehicle

Life of this patent

Abstract

Claims20