Tire pressure sensors and tire valves

Abstract

The present disclosure relates to a tire pressure sensor and a tire valve. The tire pressure sensor includes: a printed circuit board, a battery and a helical antenna assembly, where the printed circuit board, the battery and the helical antenna assembly are processed through an injection molding process to produce a sensor assembly. The helical antenna assembly includes an antenna support and a helical antenna on an outer sidewall of the antenna support. The antenna support is internally hollow, and a helical groove is provided on the outer sidewall of the antenna support. The helical antenna is wound in the helical groove. A plurality of fasteners for fixing the circuit board are at the bottom of the antenna support. A pressure sensing component and an antenna matching circuit are printed on the printed circuit board. The antenna matching circuit is configured to transmit to an input end of the helical antenna a radio frequency signal which is output by the pressure sensing component and obtained by the pressure sensing component modulating a sensed tire pressure signal. The tire pressure sensor can achieve stable signal transmission with smaller volume, lighter weight and more compact structure.

Dependencies are inferred from the claim text.