| 摘要 |
A reel mount assembly of cylindrical structure includes a cylindrical body having a stationary sleeve mounted on one end and a slidable sleeve mounted on the other end having a male thread over a certain range, and a threaded annular member adapted to mate with the male thread. The slidable sleeve is engaged with the threaded annular member in such a manner that they are rotatable with each other. At the engagement position the annular member is fitted over the slidable sleeve, and vice versa. The outer member has a rigidity sufficient to prevent its expansion, and the inner member is contractive inwardly due to its resiliency.
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