Air bag apparatus of a tire's air pressure sensing system for a vehicle

An air bag apparatus of in a tire air pressure sensing system for a vehicle, said air bag apparatus comprising:

• a collision sensing section having first collision sensors for generating a first collision sensing signal when a shock applied to at least one of a front, rear, right side and left side portion of the vehicle exceeds a first shock value, and second collision sensors for generating a second collision sensing signal when a shock applied to at least one of the right side, left side and upper portion of the vehicle exceeds a second shock value;
• a pressure sensing section mounted at at least one tire of the vehicle for generating a pressure sensing signal when the air pressure of vehicle tire is below a pressure value presented by a no-load state of an air pressure in the tire, said pressure sensing section having pressure sensors for monitoring the air pressure and radio transmitter means for amplifying the pressure sensing signal monitored by said pressure sensors to transmit the pressure sensing signal as a radio signal;
• a receiving section for receiving the pressure sensing signal transmitted from said pressure sensing section as the radio signal;
• an electronic control unit for generating an air bag expansion triggering signal either when receiving said first collision sensing signal or when receiving said second sensing signal from said second collision sensors and the pressure sensing signal from said receiving section, and for generating a warning operation start signal when receiving either the second collision sensing signal or the pressure sensing signal;
• a warning section having sound warning means and visual warning means for alerting via a sound and visible characters in accordance with the warning operation start signal from said electronic control unit;
• and
• an air bag actuating section having said air bag and an inflator for injecting an inflation gas into said air bag to inflate said air bag when receiving said air bag expansion triggering signal from said electronic control unit.

An air bag apparatus in a tire air pressure sensing system for a vehicle, said air bag apparatus comprising:

• a collision sensing section for generating a first collision sensing signal when a shock applied to at least one of the front, rear, right side and left side portion of the vehicle exceeds a first shock value, for generating a second collision sensing signal when a shock applied to at least one of the right side, left side and upper portion of the vehicle exceeds a second shock value, and the first shock value is greater than the second shock value,
• the first shock value having a minimum value required for inflating said air bag to protect passengers of the vehicle from a predetermined shock applied to the vehicle, the second shock value having the minimum value required for inflating said air bag to protect the passengers of the vehicle from the shock lower than the first shock value, said collision sensing section having first collision sensors for generating the first collision sensing signal and second collision sensors for generating the second collision sensing signal, said first collision sensors being mounted at at least one place among the front, rear, right side and left side portions of the vehicle, and said second collision sensors being mounted at the left side, right side and upper portions of the vehicle;
• a pressure sensing section mounted around an aperture for injecting air into a tire of the vehicle for generating a pressure sensing signal when the air pressure of the vehicle tire is below a pressure value presented by a no-load state of an air pressure in the tire, and having pressure sensors for monitoring the air pressure and radio transmitter means for amplifying the pressure sensing signal monitored by said pressure sensors to transmit the pressure sensing signal as a radio signal;
• a receiving section for receiving the pressure sensing signal transmitted from said pressure sensing section as the radio signal;
• an electronic control unit for generating an air bag expansion triggering signal when receiving the first collision sensing signal, for generating the air bag expansion triggering signal when receiving the second sensing signal from said second collision sensors and the pressure sensing signal from said receiving section, and for generating a warning operation start signal when receiving either the second collision sensing signal or the pressure sensing signal;
• a warning section having sound warning means and visual warning means, for alerting via a sound and visible characters in accordance with said warning operation start signal from said electronic control unit;
• and
• an air bag actuating section having said air bag and an inflator for injecting an inflation gas into said air bag to inflate said air bag when receiving said air bag expansion triggering signal from said electronic control unit.