| 摘要 |
A vacuum cleaner suction tube, having an inner tube received in an outer tube, is provided with an actuating mechanism having a grip structure provides a minimized risk of blocking. A clamping element has a form-fit connection with a pair of clamping wedges, so that both of the clamping wedges can be simultaneously moved with one a single movement of a clamping element that is connected to the grip structure so that the clamping element is moved away from the longitudinal axis of the vacuum cleaner suction tube by sliding the grip structure out of the locking position, and both clamping wedges are simultaneously lifted out of engagement with retaining recesses of the inner tube by moving the clamping element away from the longitudinal axis of the vacuum cleaner suction tube, whereby sliding of the inner tube is enabled relative to the outer tube. |
| 主权项 |
1. Vacuum cleaner suction tube, comprising:
at least one inner tube having a plurality of retaining recesses thereon, at least one outer tube, an actuating mechanism arranged on the outer tube and having at least one grip structure having at least one locked position for fixing the relative position of the inner tube relative to the outer tube and an unlocked position enabling movement of the inner tube relative to the outer tube, a re-setting means on the outer tube for re-setting the grip structure back into the locked position, and a clamping element and two clamping wedges, wherein the grip structure is slidably held in a longitudinal direction of the vacuum cleaner suction tube in a manner enabling the grip structure to move from the at least one locked position into the unlocked position, wherein, in the locked position of the grip structure, the clamping element keeps the clamping wedges engaged with at least one of the retaining recesses on the inner tube, wherein in the unlocked position, the clamping wedges enable a sliding of the inner tube relative to the outer tube, and wherein, when the grip structure is displaced out of the locked position, the re-setting means exerts a re-setting force for re-setting the grip structure into the locked position, wherein the clamping element has a form-fit connection with the clamping wedges so that both of the clamping wedges can be simultaneously moved with a single movement of the clamping element, wherein the clamping element is connected to the grip structure so that the clamping element is able to be moved away from the longitudinal axis of the vacuum cleaner suction tube by sliding of the grip structure out of the locking position, and wherein both of the clamping wedges are able to be simultaneously lifted out of engagement with the retaining recesses by moving the clamping element away from the longitudinal axis of the vacuum cleaner suction tube whereby sliding of the inner tube relative to the outer tube is enabled. |
