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有些設計特殊的簧片鎖，
是利用摩擦力將鑰匙倒拉鎖樑
來開啟，這類鎖具稱為「倒拉
鎖」。再者，亦有些設計特殊
的簧片鎖，不用分離的鑰匙來
開啟，如利用鎖樑的作動來開
啟，這類鎖具稱為「無鑰鎖」。
Some locks are named "pull-
back locks". Once the key is inserted
into such a lock, it is unlocked by
pulling the key back against the
shackle of the sliding bolt through
frictional force. Furthermore, some
special designed splitting spring
locks can even be unlocked without
separated keys, and they are named
"keyless locks". For example, one
type of keyless locks is opened with
the special movement of the shackle
of the sliding bolt.
‧無鑰鎖
Keyless lock
25x78x17mm 65g
‧倒拉鎖
Pullback lock
87x31x19mm 107g