Patent ID: 8336367
Filing Date: 2012-12-25
Classification: G01G

Abstract:
1. A detection sensor comprising: a vibrator shaped like a beam with one end thereof fixed, the vibrator offering a vibration property changed by adhesion or adsorption of a substance with a mass to the vibrator; an actuator provided near the vibrator and vibrating so as to exhibit a set vibration property; a coupling member coupling the actuator and the vibrator together to transmit vibration of the actuator to the vibrator to vibrate the vibrator; a first straightening member; a second straightening member; and a detection section detecting the substance by detecting a change in vibration of the vibrator, wherein: the actuator is separate from the detection section; the actuator comprises a beam-shaped actuator main body with a fixed end and a free end opposite the fixed end; and the actuator main body is coupled to the vibrator at the free end, and the actuator is supported by the fixed end, the first straightening member, and the second straightening member, wherein the first straightening member supports the actuator between the fixed end and the free end at a first side of the actuator, and the second straightening member supports the actuator between the fixed end and the free end at a second side of the actuator opposite the first side.