Water proof type tire pressure detecting device and cylindrical spring protective cover

Abstract

The invention discloses a water proof type tire pressure detecting device. The inner space of the device is divided into two parts for a water proof design, a cylindrical spring used as an antenna is subjected to water and pressure proof protection by using a protective cover, and other free spaces are protected in a mode of filling glue. The cylindrical spring protective cover is integrally formed by a colloid material and used for covering the cylindrical spring and comprises a cap body, wherein the cap body comprises an outer cylindrical cap cylinder and a cap cover, and a groove part is formed by the outer cap cylinder and the cap cover. The outer diameter and the thickness of the cap cover are respectively smaller than the inner diameter and the thickness of the outer cap cylinder, and relative to the outer cap cylinder, the cap cover is arranged into the groove part. The periphery of the cap cover is connected with the circumference on the top of the outer cap cylinder to form an inner cap cylinder. In the invention, air pressure inside and outside the protective cover in the tire pressure detecting device can be dynamically regulated for effectively protecting the cylindrical spring so that the cylindrical spring cannot be deformed, flooded or covered by dust. The tire pressure detecting device provided with the protective cover and sealing glue layers can undoubtedly have better overall water proof effect.

Description

【Technical field】 [0001] The invention relates to a cylindrical spring protective cover in the field of basic physics, which functions as anti-pressure, waterproof, and dust-proof, and also relates to a waterproof tire pressure detection device in the field of vehicles. 【Background technique】 [0002] see figure 1 and figure 2 The tire pressure detection device is a part of the tire pressure gauge of the car. It is generally integrated with the valve core and installed at the rim of the wheel. After the tire is mounted on the rim, the tire pressure detection device is located in the wheel groove of the rim, so that Commonly masked by the rim and tire. The tire pressure detection device has a circuit unit inside, which is generally composed of corresponding electronic components installed on a circuit board. In order to facilitate various sensors on the circuit board (such as air pressure sensor, temperature sensor) , temperature), the outer shell of the tire pressure det...

AI Technical Summary

Problems solved by technology

Practice has proved that this idea is still a compromise, because the dielectric cap can only play a waterproof role, and because the antenna used in the tire pressure detection device is generally a cylindrical spring, it has a certain degree of mechanical deformation. ability, so when the air pressure inside the tire changes, the pressure difference between the inside and outside of the dielectric cap will cause a pressure difference. Deformation occurs under the action of the tire pressure gauge, which will cause frequency offset or distortion of the sending and receiving signals, which will affect the overall performance of the tire pressure gauge

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