Multifunctional built-in tire pressure sensor

Abstract

The invention discloses a multifunctional internally-installed tire pressure sensor. The sensor comprises a valve nozzle formed in the outer side of a tire and a sensor body arranged in the tire; a detection chip which is electrically connected with a PCB and used for detecting the pressure of the tire is arranged at the position, in the direction facing the groove bottom, of the PCB, and a gas groove for storing gas of the tire is embedded in the bottom end of the detection chip; an open hole communicated with the tire is formed in the bottom of a second containing groove, the open hole is connected with the gas groove through sealing silica gel, and then a sealed gas cavity is defined by the open hole, the gas groove and the sealing silica gel; the detection chip detects gas pressure in the sealed gas cavity to obtain gas pressure of the tire; a positive electrode elastic sheet is arranged on a battery positive electrode piece, and a negative electrode elastic sheet is arranged on a battery negative electrode piece; and after the battery positive electrode piece and the battery negative electrode piece are fixed to a button battery, the positive electrode elastic sheet and the negative electrode elastic sheet penetrate the second containing groove to be fixed to the PCB and are electrically connected with the PCB. The multifunctional internally-installed tire pressure sensor is accurate in tire pressure detection result, rapid and convenient to dismount and mount, and good in electric contact performance.

Description

technical field [0001] The invention relates to the technical field of tire pressure sensors, in particular to a multifunctional built-in tire pressure sensor. Background technique [0002] Driving safety is the primary consideration for drivers when driving on the road, and tire pressure has a great impact on vehicle conditions, which has a key influence on driving safety. Tires need to have normal tire pressure to make the vehicle run smoothly. Too high or too low tire pressure may cause a blowout or a broken tire, which seriously affects the stability of the vehicle and threatens the safety of passersby’s life and property. Therefore, tire pressure monitoring Its importance to driving safety is self-evident. However, the traditional method of measuring tire pressure needs to be done after the vehicle is parked. It is impossible to know the real-time changes in the tire pressure of the vehicle during driving. If the tire is abnormal during driving, the driver cannot immed...

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Problems solved by technology

[0003] 1) The battery positive plate and the battery negative plate are directly attached to the surface of the battery, and then the power is drawn from the circuit board to supply the battery power, and finally the battery is fixed tightly by multiple screws. This structure makes the battery positive and negative The contact performance between the pole piece and the battery is not good, and it is easy to cause instantaneous power failure during use;

[0004] 2) The battery of the existing built-in tire pressure sensor is either not replaceable, or the operation of replacing the battery is complicated

At present, the method of screwing the hardware cover is mainly used to replace the battery. Due to the complex environment inside the tire, the hardware cover and screws are at risk of rusting. Looseness will lead to moisture and battery rust inside the battery compartment; in addition, if the shell screws are installed with hardware nuts, it will cause difficulties in injection molding and increase costs. Therefore, this method of replacing batteries has certain safety hazards

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