Patent ID: 11890899
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A pneumatic tire comprising a receiver coil configured to generate power by receiving an AC magnetic field from an outside of the pneumatic tire,
the pneumatic tire comprising:
a pair of bead cores each formed in an annular shape of a bead cord made from steel;
a carcass ply layer formed of an organic fiber cord, the carcass ply layer being wound about each of the bead cores and folded back to have a toroidal shape;
a belt layer provided in an outer side of the carcass ply layer in a tire radial direction and formed of a belt cord made from steel; and
a receiver coil formed in a planar shape and provided in a tire cavity region of the pneumatic tire, the receiver coil comprising a receiving region formed in a planar shape and configured to receive an AC magnetic field transmitted through the carcass ply layer, the receiver coil being configured to generate an AC signal by receiving the AC magnetic field,
as the receiver coil is viewed from one side in a tire width direction, a surface of the receiving region of the receiver coil is provided in a region along the tire radial direction interposed between a first portion located in an outermost side of the bead cord in the tire radial direction and a second portion located in an innermost side of the belt layer in the tire radial direction, and the surface of the receiving region faces in the tire width direction, and
when a maximum dimension of the receiving region along the tire radial direction of the receiver coil is a length D1, a distance from the receiving region of the receiver coil to a nearest portion of one of the bead cores to the receiving region of the receiver coil is a distance L1, and a distance from the receiving region of the receiver coil to a nearest portion of the belt layer to the receiving region of the receiver coil is a distance L2, the receiver coil being disposed away from the bead core and the belt layer and the distance L1 and the distance L2 being greater than a distance of one-fourth the length D1.