| 摘要 |
The invention relates to a telescopic tube comprising at least an outer and an inner tube element (10, 20), wherein said outer tube element (10) comprises at least one first clamping surface (1), said first clamping surface (11) being arranged in a recess or groove (12) within a first protrusion (13) or on top of the first protrusion (13), said first protrusion (13) provided at the inner wall side of the outer tube element (10), wherein the inner tube element (20) comprises at least one second clamping surface (21), said second clamping surface (21) being arranged in a recess or groove within at least one second protrusion (22) or on top of said at least one second protrusion (22), said second protrusion (22) provided at the outer wall side of the inner tube element (20), wherein the second clamping surface (21) is adapted to interact with the first clamping surface (11) such that the tube elements (10, 20) are fixed against each other by clamping in a first turning position of the outer tube element (10) with respect to the inner tube element (20) and are telescopable in a second turning position of the outer tube element (10) with respect to the inner tube element (20), wherein a first stop portion (14) is provided at the inner wall side of the outer tube element (10), said first stop portion (14) interacting with a second stop portion (23) provided at the outer wall side of the inner tube element (20), said stop portions (14, 23) providing stop means to limit the angle of rotation by which the tube elements (10, 20) can be rotated relative to each other. |
