Alarm sensor for tyre underpressure

The utility model relates to an underpressure sensing device for a motor vehicle tyre, which is composed of a fixing nut, an air bleeding column, an air cavity, a fixing sleeve ring, a bracket sheet, an up and down moving metal sheet, an adjustable suspension arm, an adjustable wheel, a circuit boar...

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Bibliographic Details
Main Author HUAIPING LI
Format Patent
LanguageEnglish
Published 19.01.2000
Edition7
Subjects
ALARM SYSTEMS
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
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Summary:The utility model relates to an underpressure sensing device for a motor vehicle tyre, which is composed of a fixing nut, an air bleeding column, an air cavity, a fixing sleeve ring, a bracket sheet, an up and down moving metal sheet, an adjustable suspension arm, an adjustable wheel, a circuit board and a shell, wherein, the umbrella-shaped air cavity is hermetically connected with a tyre valve by the fixing nut. A pressure sensing film sheet of the air cavity is bulged or retracted along with the tyre change to propel a contact of the up and down moving metal sheet to close or open. When the tyre is in the normal state, the contact is normally closed and is cut off in the underpressure state; the circuit board collects a signal, carries out the radio transmission and is matched with an alarm, and the driver can discover the condition in time and adopts corresponding measures to prevent the tyre from being damaged by pressure loss.
Bibliography:Application Number: CN1997250557U