Pressure sensor device having breakable mounting member

摘要

A pressure sensor portion having a pressure-responsive element for detecting gas pressure in reference to the atmospheric pressure is connected to a mounting body such as a canister mounted on a vehicle by means of a fragile connecting member. The connecting member breaks off to dismount the sensor device from the mounting body when a high impact due to an accidental collision or crash is imposed on the sensor device, and thereby an inlet port connected to the sensor portion for introducing gas pressure thereinto is prevented from being broken or damaged by such a collision impact. The fragile connecting member may include a tubular pipe formed integrally with a cover that hermetically closes an inner cavity of the sensor portion. A mounting bracket connected to the sensor portion via the fragile connecting member may be used to mount the sensor device on the mounting body.