| 摘要 |
<p>A length adjustable handle is provided to control vertical length adjustment by changing a structure of a handle installed at a ceiling of a public transport. A length adjustable handle(30) comprise: a handle body(31) of a hook shape; a serrated wheel(32) in which a saw blade is formed in one side with being equipped in the inner top end portion of the handle body; a connection part(33) in which an upper end is connected in a ceiling and a bottom part is rolled with the serrated wheel circumference; and a length control unit which controls the length of the connection part by controlling the rotation state of a serrated wheel. A length control unit comprises: a chain(34) which is selectively connected in the saw blade of the serrated wheel and prevents the rotation of the serrated wheel; and a lock unit which controls a relative position of the chain so that the chain is selectively connected in the saw blade.</p> |
