Air pressure detection device for automobile tire

Abstract

The invention relates to the technical field of automobile tire detection, and discloses an air pressure detection device for an automobile tire, which comprises a connecting part, the middle of the connecting part is in threaded connection with an inner end, the middle of one end of the inner end is provided with a threaded hole, and the outer side of one end of the inner end is movably sleeved with a connecting frame. Through arrangement of a threaded hole, a movable rod, a clamping block and a limiting block, after a fastening screw is screwed into the threaded hole, the clamping block extends into a clamping groove through cooperation of the movable rod, a first connecting rod, a second connecting rod and a piston, and further fastening between the air nozzle assembly and the connecting part is achieved; and after the air tap assembly and the tire pressure detection device are installed, limiting blocks on the two sides can be pushed to be clamped in an annular groove under the action of the internal air pressure of the tire, the fastening screw is limited, and the safety of the tire is improved. Therefore, the fastening screw is prevented from loosening due to long-term vibration, and normal work of the tire pressure detection device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of automobile tire detection, in particular to an air pressure detection device for automobile tires. Background technique [0002] Car tire pressure monitoring systems can generally be divided into two types: one is the indirect tire pressure monitoring system, which judges whether the tire is abnormal through the difference in the speed of the tire; the other is the direct tire pressure monitoring system. Install four tire pressure monitoring sensors to automatically monitor the tire pressure and temperature in real time when the car is stationary or running, and give timely alarms to tire high pressure, low pressure, and high temperature to avoid traffic accidents caused by tire failures and ensure safe driving. Safety, among them, the direct tire pressure detection system mainly works through the tire pressure sensor installed on the side of the wheel hub through the tire air nozzle, so it is also called...

AI Technical Summary

Problems solved by technology

[0003] But the existing built-in tire pressure detection device still has the following deficiencies in the process of actual use: first, because the existing tire pressure detection device is directly fixed with the air valve assembly by screws, and the air valve group will be Fasten the connection with the hub joint through threaded connection, and the tire is always in motion when the car is running. The vibration of the tire and the hub due to the movement can easily cause the screw to loosen, which is easy to cause the valve assembly and tire pressure detection. The device is damaged or even causes the tire to leak, which affects the normal driving of the vehicle; secondly, because the tire pressure detection device is installed in the middle of the outer wheel hub, and the air pressure is detected through the pressure detection diaphragm of the pressure sensor, and during the rapid rotation of the tire, it will Centrifugal force is generated on the pressure detection diaphragm, which causes the pressure detected by the pressure detection diaphragm to be the combined force of air pressure and centrifugal force, resulting in the detected air pressure value being greater than the actual value, which is likely to cause insufficient tire air pressure and cause the tire pressure detector to fail. The situation of the alarm affects people's judgment and prolongs people's reaction time, and there are potential safety hazards

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