| 摘要 |
<p>The invention relates to a nut (10) comprising an outer body (16) with an axial passage (22), an inner body which can be movably placed in the passage along an axial direction and which is divided along said axial direction into at least two jaws (18, 20), each jaw bearing an inner thread segment (24) on its radial inner surface, first guiding means (26) located on the outer body, as well as second guiding means (30) located on the jaws and co operating with the first guiding means so that the jaws are radially displaced towards the exterior when the outer body is displaced in the unscrewing direction relatively to the inner body et radially displaced towards the inside when the outer body is displaced in the screwing direction relatively to the inner body. Due to the fact that the jaws are moved in the axial direction during displacement, their inner thread segment can easily engage the outer thread of a threaded rod. Furthermore, since the jaws do not require any section with a thread free recess, their length must only correspond to the desired length of the inner thread.</p> |
