Patent ID: 6993962
Filing Date: 2006-02-07
Classification: B60C

Abstract:
1. An electronic wireless tire pressure monitoring apparatus having a tire pressure detector completely installed on an inflation valve of a tire, comprising: a) a first housing including a threaded male connector with a contour corresponding to an inflation valve, a lower part of the first housing being hollowed out to form a cavity with an opening directed downwards; b) a monitoring circuit board received within the cavity, an electrically conductive pinch pin holder being positioned in the center of the monitoring circuit board; c) a pressure sensor positioned within the pinch pin holder and configured as a chip type semiconductor sensor, the pressure sensor being wire-bonded to the monitoring circuit board to allow for an electric connection; d) a pinch pin made of electrically conducting material, the pinch pin includes a lower section configured as a hollow with an opening directed downwards, a middle section formed as a flange, and an upper section with at least one through hole at one side thereof to communicate with the hollow, an insulation ring being attached to a bottom end of the middle section, an airtight chamber being defined by the hollow and the pinch pin holder; e) an antenna plate electrically coupled to the circuit board for transmitting signals; f) a battery mounted on a top surface of the antenna plate, the battery having a first type terminal on a top surface thereof in contact with a first type power contact of the monitoring circuit board as well as a second type terminal on a bottom surface thereof that is electrically coupled through a conducting element to a second type power contact of the circuit board; and g) a second housing having an opening directed upwards, the second housing being joined to the bottom of the first housing for covering the above-mentioned components.