| 摘要 |
A lock includes a shell, an annular holding member, and a bead holder; the shell has three gaps around its lock hole; the annular member is held in the shell, and has a central shaft, three gaps, and several holes each holding a pine therein; the bead holder is positioned around one end of the shaft in the shell, and has cavities around its middle hole; long beads are held in the cavities respectively, and biased towards the holes of the annular holding member with springs to engage the annular member; a key is used with the lock, which key has three outer bar portions; when the key is inserted in the lock hole, and pressed inwards, it will force the pins to push the beads, and its bar portions will be received in the gaps of the annular member; thus, the annular member can be turned with the key.
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