LOCKING SYSTEM FOR A VEHICLE

摘要

A locking system for a vehicle which uses a key system having a key (10; 90) including a coil (10f; 92a) and a key cylinder (12; 94) including an antenna coil (20a; 96). The coil (10f; 92a) transmits data to the antenna coil (20a; 96) by an electromagnetic conversion method so that a locking operation of the vehicle is controlled by an electrical control unit (14, 16, 18) based on the data transmitted from the key (10; 90). One of the antenna coils (20a; 96) and the coil (10f; 92a) is located inside the other one of the antenna coils and the coil when the key (10; 90) is inserted into the key cylinder (12; 94). Thus, a high electromagnetic conversion efficiency is provided between the antenna coil (20a; 96) of the key cylinder (12; 94) and the coil (10f; 92a) of the key (10; 90).