Tire pressure monitoring alarm

Abstract

The invention discloses a tire pressure monitoring alarm. A bottom nut of the tire pressure monitoring alarm extends inwards to form a valve plate, an elastic diaphragm which is compressed on the valve plate by a contact pressure block is arranged above the valve plate, a spring base is provided with a convex outer edge, and an elastic contact piece extends towards the direction of the spring base. When the tire pressure is normal, the convex outer edge of the spring base is positioned above the elastic contact piece and separated from the elastic contact piece; and when the tire pressure is too low, the convex outer edge of the spring base is just overlapped on the elastic contact piece and conducted with the elastic contact piece to enable the anode of a battery to be ultimately conducted with an anode access point of a flasher circuit board through a battery pad, a spring, the spring base, the elastic contact piece and a shell in sequence, and an alarm circuit board obtains an electric alarm. The alarm is only provided with a cavity communicated with the tire pressure, a reference cavity is replaced by the spring, and the alarm does not have requirements for the sealing performance of the upper part of the elastic diaphragm, and is very easy to satisfy the requirements for the sealing performance in use, and reliable and safe to use.

Description

technical field [0001] The invention relates to a device for real-time monitoring of automobile tire pressure. Background technique [0002] Car tires usually have a standard pressure. When the tire pressure is low, the handling performance of the car will be affected, the wear of the tire will be increased, and the energy consumption of the car will be increased. Especially when the tire pressure of each tire of the car is unbalanced, it will have a bad influence on the drivability and safety of the car. [0003] In order to avoid the above situation, a tire pressure alarm device came into being, and the existing tire pressure alarm device is mainly in the form of an electronic sensor, which senses the air pressure in the tire through an electronic chip, and the electronic chip needs to be powered 24 hours a day state, its power consumption is large, the battery is easy to run out, and needs to be replaced frequently, which brings inconvenience to the user. Especially onc...

AI Technical Summary

Problems solved by technology

However, it not only needs to set up a reference chamber filled with standard pressure in the alarm device, but also needs to set up a monitoring chamber connected to the inner cavity of the tire that is consistent with the tire pressure in real time, which leads to extremely high requirements for the sealing performance of the alarm device

However, the alarm device has many parts, and the materials of each part are not the same, and its sealing performance is difficult to guarantee. Sometimes the installation of the alarm device leads to air leakage of the tire, which is very inconvenient and has potential safety hazards.

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