| 摘要 |
A needle assembly for a tagger gun includes a needle carrier slidably disposed within the tagger gun casing, a needle removably mounted into a needle bore in the needle carrier, and a needle lock snap-mounted into a needle lock bore in the needle carrier. The needle lock includes a locking post having a first end and a second end, and an enlarged head formed onto the second end. The locking post is shaped to include a longitudinally-extending slot which bifurcates the first end into a pair of parallel fingers. A ratchet-shaped tooth is formed onto each finger, each tooth including a tapered surface for guiding the needle lock into needle lock bore and an engagement surface for retaining the needle lock mounted in the needle carrier. In use, the needle lock can be rotated about its longitudinal axis to selectively lock the needle in place within the needle bore.
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