| 摘要 |
<p>An electronic wireless tire pressure monitoring apparatus is provided to install on an inflation valve on a tire for a direct signal transmission and a reliable detection. A pressure sensor is configured as a chip type semiconductor sensor and directly wire-bonded to a circuit board(40). Meanwhile, the pressure sensor is fixed by the pinch pin(60) and the pinch pin holder(41) in place, thereby defining an airtight chamber(66) to allow for an accurate detection of the tire pressure with the pressure sensor. Moreover, the pinch pin(60) and the pinch pin holder(41) are used as electrically conducting means for power supply when the tire pressure detector(100) is screwed on the tire valve(15). A disconnection is easily achieved when unscrewed. Therefore, the power-saving effect is achieved and no signals are falsely transmitted.</p> |
