鸳鸯锁，它包括锁体及钥匙，锁体由锁壳、置于锁壳内的锁舌联动机构、锁壳盖及置于锁壳盖上且与锁舌联动机构相配的锁芯及锁芯壳构成，钥匙包括钥匙柄及与钥匙柄相连的钥匙杆，所述钥匙呈折叠状，钥匙杆下端通过销轴连接第二钥匙，锁舌联动机构上设有钥匙向下带动锁芯下移后第二钥匙控制锁舌开合的钥匙折叠盘。
The mandarin duck lock comprises a lock body and a key. The lock body is composed of a lock shell, a lock tongue linkage mechanism arranged in the lock shell, a lock shell cover and a lock cylinder and a lock core shell arranged on the lock shell cover and matched with the lock tongue linkage mechanism. The key comprises a key handle and a key rod connected with the key handle. The key is folded. The lower end of the key rod is connected with a second key through a pin shaft. The key is arranged on the lock tongue linkage mechanism After the key moves down to drive the lock cylinder, the second key controls the key folding disc of the opening and closing of the lock tongue.