| 摘要 |
A lock member attachment device with a needle guard installation structure includes a needle guard having a pair of fork-like attachment pieces at a basal portion thereof, and a boxlike needle receiving portion at least at an upper surface thereof. The needle receiving portion is at a front portion of an attachment piece. The pair of attachment pieces are pivotally supported on an area near a front end of a main body casing, and at least one of the attachment pieces is acted on by a slider-type stopper, thereby retaining a predetermined position. The needle receiving portion has a cut groove formed in a bottom portion thereof, the cut groove being for restraining a discharged runner portion of a tag suspending member assembly when the needle guard is collapsed in use, so that a finger holding a grip of the main body will not contact the runner portion.
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