Patent ID: 8474312

Claim:
A tire pressure monitor having a tire pressure detector installed inside a tire, comprising: a tire pressure detector having a body, the body being provided on a wheel rim inside a tire, and a tire pressure monitor PCB being provided in the body; an air faucet made of metal and provided at a front end of the tire pressure detector, the outside of the air faucet being in the form of threads, a leakproof cushion being set around the root, the air faucet being clamped with a screw nut after an external part of the air faucet passes through a piercing hole of the wheel rim so that a first conducting hole being axially formed, and the external part of the first conducting hole is formed into a first connector; an antenna connecting line having both ends pass through the first conducting hole, and an inside end thereof electrically connecting an antenna contact on the tire pressure monitor PCB; an external air faucet made of metal conductor, a second conducting hole being axially provided in the external air faucet, the internal part of the second conducting hole is formed into a second connector corresponding to the first connector of the first conducting hole, the second connector and the first connector being connected end to end, and electrically connecting an outside end of the antenna connecting line, and an air faucet bolt being provided outside of the second conducting hole; and an insulation sleeve having an axial hole and being provided between the first connector and the second connector in order to isolate the electrical transmission between the air faucet and the external air faucet so that the external air faucet being formed to be an independent transmitting antenna without an interference from the tire.