Patent ID: 9409451
Filing Date: 2016-08-09
CPC Classification: B29C,B60C

Claim Text:
1. A tire information device provided in a tire cavity region for obtaining tire information related to a condition of a tire, the tire information device comprising: a sensor that detects a condition of gas filling the tire cavity region as tire information; a tire valve that ventilates the tire cavity region with the atmosphere outside of the tire; and a housing that includes: an internal space for containing the sensor in a state of being compartmentalized from the tire cavity region, a ventilation hole that allows communication between the internal space and the tire cavity region, and a communication hole that is connected with an opening part at an end portion on the tire cavity region side of the tire valve and that allows communication between the opening part of the tire valve and the tire cavity region, the diameter of the communication hole and the inner diameter of the tire valve having a minimum value of not less than 2.5 mm, and the ventilation hole being provided at a position outside a range of less than 140° of the angle of view from a center position corresponding to the position of an opening of the communication hole with respect to a central direction aligned with the direction of extension of the communication hole from the opening of the communication hole at the end portion on the tire cavity region side.