Tire pressure monitoring and alarming device

Abstract

The invention discloses a tire pressure monitoring and alarming device. An air inlet channel communicated with a reference cavity is formed in the bottom of a reference cavity assembly; an outlet section of a bottom nut is provided with an air valve sealing ring for sealing an opening part of an air valve core; an air valve core jack is positioned between the bottom of the reference cavity assembly and the air valve sealing ring; a step at the bottom end of the air valve core jack is inserted into the air valve sealing ring; a main sealing ring is arranged between the top end of the air valve core jack and the reference cavity assembly and corresponds to the lower side of the air inlet channel; the main sealing ring is used for isolating a channel from the inner side of the air valve core jack to the air inlet channel from the outer side of the air valve core jack in a sealing manner; a compressed spring is mounted between the air valve core jack and the reference cavity assembly; the outer wall of the air valve core jack is sealed with the bottom nut through a self-detection sealing ring on the bottom nut, and a space above an elastic conductive sheet is sealed to form an independent monitoring cavity; and the wall face of the air valve core jack is further provided with a lateral air channel; and the lateral air channel is close to the self-detection sealing ring and can move to the upper side of the self-detection sealing ring from the lower side of the self-detection sealing ring to be communicated with the monitoring cavity.

Description

technical field [0001] The invention relates to a device capable of monitoring the pressure of automobile tires in real time. 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 pressure of one of the car tires is low and the pressure of the four tires is unbalanced, not only the above-mentioned problems will exist, but also the braking distance of the car will be prolonged, and even the possibility of deviation and overturning may occur, which will have a negative impact on the safety of the car. influences. [0003] In order to avoid the above situation, the patent No. "ZL201210191711.3" provides a tire pressure monitoring and alarm device. When it is used, the bottom nut is screwed on the valve core. During the screwing process, the valve core spring...

AI Technical Summary

Problems solved by technology

[0004] However, when the existing tire pressure monitoring and alarming device is installed, it is impossible to self-check whether its components can work normally, and it is impossible to verify whether the reference pressure enters the reference cavity. , it is not only unable to monitor the tire pressure, but also because of human dependence, even if the tire pressure is low, the user will still think that the pressure is normal; in addition, the existing tire pressure monitoring and alarm device, when the lens on the top of the , the pressure in the tire pressure monitoring and alarm device will leak out from the broken position, resulting in the failure of the tire pressure monitoring and alarm device to work normally

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