Tire information detecting device

• US 7,316,159 B2
• Filed: 07/30/2004
• Issued: 01/08/2008
• Est. Priority Date: 07/31/2003
• Status: Expired due to Fees

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Kato, Manabu, Shirai, Katsuyoshi, Fujioka, Eiji
• Primary Examiner(s): NOORI, MAX H
• Application Number:
  US10/902,101
• Publication Number:
  US 20050023896A1
• Time in Patent Office: 1,257 Days
• Field of Search: 73146-1468
• US Class Current: 73/146
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0444 Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders
• CPC Class Codes: B60T 2240/03 Tire sensors

Abstract

A tire information detecting device includes detecting means for detecting a state quantity in a tire, transmitting means for transmitting a signal outputted from the detecting means, receiving means for receiving the signal transmitted from the transmitting means, the receiving means mounted at a vehicle body side, and a brake actuator adjusted to apply a braking force to the vehicle. The receiving means is positioned at a radially inner side from a major diameter of the brake actuator.

Claims

1. A tire information detecting device comprising:

a detector which detects an air pressure in a tire;

a transmitter which transmits a signal outputted from the detector;

a receiver which receives the signal transmitted from the transmitter, the receiver being mounted at a vehicle body side; and

a brake disc adjusted to apply a braking force to a vehicle,

wherein the receiver is positioned radially inward from an outer edge of the brake disc to prevent a distance between the receiver and the transmitter from varying widely and thereby assure stability of the receiver in receiving the signal from the transmitter, and

the receiver is provided with a vehicle wheel speed detector which detects a vehicle wheel speed.

2. A tire information detecting device according to claim 1, wherein the receiver is mounted at a linking member supporting a hub.

3. A tire information detecting device according to claim 1, wherein the transmitter is mounted at a wheel rim supporting the tire.

4. A tire information detecting device according to claim 1, wherein the detector, the transmitter and the receiver are mounted at a driven wheel.

5. A tire information detecting device according to claim 4, wherein the receiver is disposed radially inward from an outer edge of a hub.

6. A tire information detecting device according to claim 1, wherein the detector is included in the transmitter.

7. A tire information detecting device according to claim 1, wherein the transmitter includes a signal modulator which modulates the signal, and the receiver includes a signal demodulator which demodulates the signal.

8. A tire information detecting device according to claim 1, wherein the vehicle wheel speed detector is integrally formed with the receiver.

9. A tire information detecting device according to claim 1, wherein the receiver is mounted on a linking member at the vehicle body side.

17. A tire information detecting device according to claim 1, wherein the transmitter and the receiver communicate via radio waves.

10. A tire information detecting device comprising:

a detector which detects at least one of an air pressure, an air temperature in the tire, a vehicle wheel acceleration and a power supply voltage supplied to the detector;

a transmitter which transmits a signal outputted from the detector;

a receiver which receives the signal transmitted from the transmitter, the receiver being mounted at a vehicle body side; and

a drum brake adjusted to apply a braking force to a vehicle,

wherein the receiver is positioned radially inward from an outer edge of the drum brake to prevent a distance between the receiver and the transmitter from varying widely and thereby assure stability of the receiver in receiving the signal from the transmitter, and

the receiver is provided with a vehicle wheel speed detector which detects a vehicle wheel speed.

18. A tire information detecting device according to claim 10, wherein the transmitter and the receiver communicate via radio waves.

11. A tire information detecting device comprising:

a detector which detects an air temperature in a tire;

a transmitter which transmits a signal outputted from the detector;

a receiver which receives the signal transmitted from the transmitter, the receiver being mounted at a vehicle body side; and

a brake disc adjusted to apply a braking force to a vehicle,

wherein the receiver is positioned radially inward from an outer edge of the brake disc to prevent a distance between the receiver and the transmitter from varying widely and thereby assure stability of the receiver in receiving the signal from the transmitter, and

the receiver is provided with a vehicle wheel speed detector which detects a vehicle wheel speed.

12. A tire information detecting device according to claim 11, wherein the receiver is mounted at a linking member supporting a hub.

13. A tire information detecting device according to claim 11, wherein the transmitter is mounted at a wheel rim supporting the tire.

14. A tire information detecting device according to claim 11, wherein the detector, the transmitter and the receiver are mounted at a driven wheel.

15. A tire information detecting device according to claim 14, wherein the receiver is disposed radially inward from an outer edge of a hub.

16. A tire information detecting device according to claim 11, wherein the detector is included in the transmitter.

19. A tire information detecting device according to claim 11, wherein the transmitter and the receiver communicate via radio waves.