| 摘要 |
A locking device includes a barrel affixed to a plate member of a sliding track in a housing structure, a lock bolt movable in and out of the barrel for locking an external mobile device to the sliding track, a pull knob provided at the back side of the barrel and connected with the lock bolt for moving the lock bolt in and out of the barrel, and a spring mounted in the barrel to impart an outward pressure to the lock bolt and to hold the lock bolt in the locking position.
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