Patent ID: 7316164

Claim:
A pressure detection device comprising: a housing, the housing having formed therein an approximately cylindrical hollow part elongated in an axial direction; a sensing part that is provided at one end portion of the housing to output an electrical signal responsive to an applied pressure; a circuit part that is provided at an other end portion of the housing to process the signal from the sensing part; and a flexible printed board arranged in the cylindrical hollow part of the housing between the sensing part and the circuit part, the flexible printed board extending entirely in the axial direction and to be elastically deformable in the axial direction, wherein: the flexible printed board has a first end portion electrically connected to the sensing part at a first connecting part, and a second end portion electrically connected to the circuit part at a second connecting part; and the flexible printed board has a shape between the first and second end portions to relieve a stress applied to the connecting parts.