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組合鎖由鎖體、轉輪、以及具
有鎖樑的鎖栓所組成。鎖體包
括一個片狀端板與轉軸，讓轉
輪轉動，並導引鎖栓作動；鎖
栓亦有一個片狀端板，一部分
固結鎖樑，用以掛鎖，另一部
分固結具有凸片的栓梗；每個
轉輪的大小一樣，表面大多鏤
刻著四個文字，其内
徑並有一凹
形槽與栓梗上的凸片對應。開
鎖時，先將所有轉輪上的文字，
在鎖體的正面排成一條線，且
形成特定的字串，使所有轉輪
的凹形槽向上對齊，構成一個
通道；此時便可滑動鎖栓、與
鎖體分離，鎖便被打開了。
A combination lock comprises of
the lock-body, rotating wheels, and
the sliding bolt with a shackle and
a stem. The lock-body contains an
end plate and an axis with rotating
wheels for guiding the movement
of the sliding bolt. The sliding bolt
also has an end plate for bonding
both the shackle to hang the lock and
the stem with several convex (
凸
)-
shaped blocks. Every rotating wheel
is of the same size. Usually four
letters are engraved on the surface.
And, there is a concave (
凹)
-shaped
chute that corresponds with each
convex-shaped block on the stem.
When unlocking the lock, one has
to rotate the letters on each wheel
into the correct order and position.
When all the concave-shaped chutes
face upward, a channel is formed
that allows the stem with convex-
shaped blocks to slide apart from the
lock-body. The lock is then opened.