Patent ID: 9643559
Date: 2017-05-09
CPC Classifications: B60R,G01M,H01L

Claim:
1. A pressure detecting device comprising: a sensor housing; a first detection member including a first diaphragm, the first detection member being fixed to the sensor housing such that a first surface of the first diaphragm faces a closed space and a first chamber being isolated from the closed space is provided to face a second surface of the first diaphragm, the first detection member outputting a signal when the first diaphragm is deformed according to a pressure in the closed space; a second detection member including a second diaphragm, the second detection member being fixed to the sensor housing such that a first surface of the second diaphragm faces the closed space and a second chamber is provided to face a second surface of the second diaphragm, the second detection member outputting a signal having an absolute value the same as an absolute value of the signal outputted from the first detection member but having an opposite positive or negative sign from that of the signal outputted from the first detection member, when the second diaphragm is deformed by a same amount and in a same direction as the first diaphragm; and at least one protection member being filled in the sensor housing and covering the first surface of the first diaphragm and the first surface of the second diaphragm.