| 摘要 |
#CMT# #/CMT# The device (10) has an inflation valve seat (14) made of electrically conductive material and connected to a pressure sensor (12). A transmitting antenna has an end-cap (161) made of metallic material and connected to the seat. An annular shaped substrate (162) defines a central coupling hole coupled with the end-cap, and a metallic conducting wire is mounted in a spiral manner in the substrate around the hole. The wire has an internal end exposed to a circumference wall of the hole and electrically connected to the end-cap. A cover (28) is made of plastic material and recovers the end-cap. #CMT#USE : #/CMT# Device for detecting the pressure of a tire of a vehicle e.g. automobile. #CMT#ADVANTAGE : #/CMT# The structure of the device increases the transmission range of radio signal of tire pressure emitted by the device, and allows a component of the automobile to accurately receive the radio signal of the tire pressure, thus allowing a driver of the automobile to accurately know the state of the tire pressure, when the driver drives the automobile, and hence preventing the potential danger. The device allows the transmitting signal to have high angle characteristic. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a tire pressure detecting device representing the air passage of an inflation valve seat of the device in a closing configuration. 10 : Tire pressure detecting device 12 : Pressure sensor 14 : Inflation valve seat 28 : Cover 141 : Internal air passage 161 : End-cap 162 : Annular shaped substrate. |
