US 12,669,410 B2 · Tire testing device

Abstract

A tire testing device includes a vehicle, and a test unit provided in the vehicle and capable of supporting a test wheel on which a test tire is mounted in a state in which the test wheel is in contact with a road surface. The test unit includes a power unit configured to output power for rotationally driving the test wheel. The power unit includes a rotation output unit configured to output a rotational motion of a rotation speed corresponding to a traveling speed of the vehicle, and a torque applying unit configured to add torque to the rotational motion to output the torque. the rotation output unit includes a driven wheel configured to contact a road surface, a first axle coupled to the driven wheel, and a first transmission mechanism configured to couple the first axle to an input shaft of the torque applying unit.

Claims11

Dependent claims

A test unit for tire testing, the test unit comprising:

an axle unit configured to rotatably support a test wheel on which a test tire is mounted in a state where the test wheel is in contact with a road surface;
and
an alignment unit configured to adjust a load acting on the test wheel,
wherein the alignment unit includes a load adjustment mechanism configured to adjust the load acting on the test wheel,
wherein the load adjustment mechanism includes:
a first movable frame movable vertically;
linear guides configured to guide the vertical movement of the first movable frame;
and
a first drive unit configured to drive the first movable frame vertically,
wherein the first movable frame has a substantially inverted U-shaped cross section when cut along a plane orthogonal to a rotation axis of the test wheel, and
wherein the linear guides are on outer sides of the substantially inverted U-shape of the first movable frame so that the first movable frame is sandwiched by the linear guides.

8 more elements

A test unit for tire testing, the test unit comprising:

an axle unit configured to rotatably support a test wheel on which a test tire is mounted in a state where the test wheel is in contact with a road surface;
and
an alignment unit configured to adjust an orientation of the test wheel,
wherein the alignment unit includes a camber angle adjustment mechanism configured to adjust a camber angle of the test wheel,
wherein the camber angle adjustment mechanism includes:
a second movable frame that is rotatable about an Eφ axis parallel to a traveling direction;
curved guides configured to guide rotation of the second movable frame;
a first pivot projecting from the second movable frame coaxially with the Eφ axis;
a third bearing configured to rotatably support the first pivot;
and
a φ drive unit configured to rotationally drive the second movable frame,
wherein the second movable frame has a substantially inverted U-shaped cross section when cut along a plane orthogonal to a rotation axis of the test wheel, and
wherein the curved guides are on outer sides of the substantially inverted U-shape of the second movable frame so that the second movable frame is sandwiched by the curved guides.

10 more elements

Dependencies are inferred from the claim text.

Tire testing device

Life of this patent

Tire testing device

Life of this patent

Abstract

Claims11