| 摘要 |
A retractable rod assembly includes outer and inner tubes, and a positioning device. An outer tube wall of the outer tube has two outer radial holes formed therein. An inner tube wall of the inner tube has two inner radial holes formed therein. The positioning device includes a mounting block and two spring-loaded retainers. The mounting block is disposed in the inner tube, and is formed with a pair of retainer passages respectively aligned with the inner radial holes. Each of the spring-loaded retainers, which are disposed respectively in the retainer passages, includes a retaining pin and a biasing member for biasing the retaining pin to extend out of aligned ones of the inner and outer radial holes to releasably secure the outer and inner tubes in an extended state.
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