Patent ID: 7391310

Claim:
A seatbelt alarm device for a vehicle, comprising: a seat sensor for detecting a mass on a seat of the vehicle based on a load exerted on the seat; a seatbelt sensor for detecting an engagement of a seatbelt of the seat with a seatbelt buckle; a judgment circuit that generates a demand for a seatbelt-wear alarm upon determining that a mass sits on the seat and the seatbelt is not engaged according to detection signals of the seat sensor and the seatbelt sensor, respectively; an alarm unit for generating the seatbelt-wear alarm according to the demand from the judgment circuit; and a child seat sensor for detecting a child seat mounted on the seat without using the seatbelt, wherein the judgment circuit restricts the alarm unit from generating the seatbelt-wear alarm irrespective of whether the seatbelt is worn or not when the judgment circuit determines that the child seat is mounted to the seat according to a detection signal of the child seat sensor.