| 摘要 |
<p>A telescopic tube shaft for a vacuum cleaner including an outer tube (11) which is slidably arranged on an inner tube (10). The outer tube encloses at least a part of an electric conductor (17) extending mainly between the upper and lower ends of the telescopic tube shaft. The conductor includes an electrical connector (18, 21) at the upper and lower ends of the telescopic tube shaft. A portion of the inner tube (10) is surrounded by a coil spring (16a) and the conductor (17) extends parallel to the spring (16a).</p> |
