Patent ID: 6959947

Claim:
A front seatbelt system for a front seat of a vehicle equipped with a double door construction in which a front door and a rear door overlapped by an rear end of the front door from the outside of the vehicle open outwardly forward and rearward, respectively, to form a single uninterrupted doorway opening to a passenger compartment of the vehicle and the front door allows the rear door to open and close while the front door is open, said front seatbelt system comprising: a retractor installed in the rear door and retracting a seatbelt therein; seatbelt lock means for locking said seatbelt being drawn out from said retractor when said seatbelt attains a predetermined acceleration; lock canceling means for putting said seatbelt lock means inoperative when activated; door detection means for detecting whether at least either one of the front and rear doors is open; seatbelt detection means for detecting whether said seatbelt is unbuckled; and control means for activating said lock canceling means to put said seatbelt lock means inoperative when said seatbelt detection means detects said seatbelt that is unbuckled while said door detection means detects at least either one of the front and rear doors that is open and deactivating said lock canceling means to put said seatbelt lock means operative when said seatbelt detection means detects said seatbelt that is buckled up while said door detection means detects at least either one of the front and rear doors that is open.