| 摘要 |
A longitudinally adjustable leg assembly comprises a holder (11, 8) which is adapted to be fixed to the underside of a table top (1), and first, second and third elongate carrier elements (2, 3, 4). These cooperate by threaded engagement and are telescopingly displaceable inside each other. One of the first and third carrier elements (2, 4) is along essentially its entire length enclosed by and mounted rotatably but axially immovably in the holder (11, 8), and the other of the first and third carrier elements (4, 2) is arranged non-rotatably relative to the holder (11, 8). The leg assembly has a means for preventing rotation of the other of the first and third carrier elements (4, 2). Said means extends along the entire second carrier element (3), the rotation-preventing means and the holder (11, 8) and respectively the other of the first and third carrier elements (4, 2) having engaging means in the form of grooves (21, 22) and projections (24, 25) engaging therein and arranged between the rotation-preventing means and the holder (11, 8) and respectively between the rotation-preventing means and the other of the first and third carrier elements (4, 2).
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