Patent ID: 7624641

Claim:
A vibration sensing apparatus comprising: a variable resistor installed to be spaced from a vibrating body, and having variable resistance values according to each displacement of the vibrating body; a displacement transmission unit interposed between the variable resistor and the vibrating body for transmitting each displacement of the vibrating body to the variable resistor; and a vibration detector installed to be spaced from the vibrating body, and detecting each vibration of the vibrating body based upon changes in the resistance values of the variable resistor, wherein the displacement transmission unit includes: a connection member having one end connected to the vibrating body; a gear mechanism rotated by interaction with the connection member; and a displacement generator generating each displacement of the vibrating body according to rotations of the gear mechanism, and wherein the connection member is a cable, and the displacement transmission unit further includes an elastic member for rotating the gear mechanism to an initial position.