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Pneumatic tire, pneumatic tire assembly, and power supply system

A technology for pneumatic tires and tires, applied in pneumatic tires, tire measurement, tire parts, etc., can solve the problem of semi-permanent driving of sensors and transmission devices.

Active Publication Date: 2021-02-09
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electric power supplied by the battery is limited, so the sensor and the transmission device cannot be driven semi-permanently, and it is necessary to disassemble the pneumatic tire assembled with the wheel from the wheel and replace the exhausted battery in the tire cavity area. processing

Method used

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  • Pneumatic tire, pneumatic tire assembly, and power supply system
  • Pneumatic tire, pneumatic tire assembly, and power supply system
  • Pneumatic tire, pneumatic tire assembly, and power supply system

Examples

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Embodiment Construction

[0090] Hereinafter, a pneumatic tire, a pneumatic tire assembly, and a power supply system for supplying electric power to elements provided in a pneumatic tire according to an embodiment will be described with reference to the drawings.

[0091] figure 1 It is a figure which shows an example of the cross section of a pneumatic tire and a pneumatic tire assembly. figure 1 The illustrated pneumatic tire 10 includes a pair of bead cores 12, a carcass ply 14, and a belt 16 as a frame portion. The pneumatic tire 10 is assembled to the wheel 11 to form a pneumatic tire assembly. exist figure 1 In , a part of the wheel 11 (rim bottom surface, rim flange) is shown.

[0092] The bead core 12 is an annular member formed by winding a steel bead cord in multiple layers in the tire circumferential direction.

[0093] The carcass ply 14 is a member formed of an organic fiber cord formed into a ring shape by being wound around each bead core 12 and folded back. In the carcass ply 14...

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Abstract

A pneumatic tire according to the present invention comprises: a planar coil, provided inside a cavity region, for receiving an AC magnetic field that has passed through a carcass ply layer, and generating an AC signal; and an element for receiving a supply of power converted from the AC signal. A plane of a receiving region of the receiving coil is provided, so that the plane of said receiving region faces the tire widthwise direction, in a region that, with respect to the tire radial direction, is between an outermost part of a bead core in the tire radial direction and an innermost part ofa belt layer in the tire radial direction. In addition, when a length D1 is defined as the maximum dimension of the receiving region, of the receiving coil, along the tire radial direction and distances L1, L2 are defined as the respective distances from the receiving region of the receiving coil to the nearest parts of the bead core and the belt, the receiving coil is disposed so that the distance L1 and the distance L2 are greater than the length D1 divided by 4.

Description

technical field [0001] The present invention relates to a pneumatic tire, a pneumatic tire assembly, and a power supply system for supplying electric power to elements provided in the pneumatic tire. Background technique [0002] A technique has been proposed in which elements such as sensors are incorporated in a pneumatic tire to monitor the state of the pneumatic tire. For example, in order to monitor the air pressure of a pneumatic tire, an internal pressure alarm is given in which an internal pressure sensor and a transmitting device are installed in the tire cavity area, and the monitoring result of the internal pressure of the internal pressure sensor is wirelessly transmitted from the transmitting device to a receiving device on the vehicle side. The system, or an acceleration sensor is installed on the inner peripheral surface side of the tread portion in the tire cavity area, and the tread portion when the tire rolls based on the acceleration sensor is wirelessly t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C19/00B60C5/00
CPCB60C19/002B60C23/0413B60C2019/004B60C19/00
Inventor 丹野笃
Owner THE YOKOHAMA RUBBER CO LTD