| 摘要 |
Arrangements are known for fastening in particular plane objects in relation to a stand or equivalent in such a manner that the object can in a plane take up various releasable fixed positions and can in all these positions be limitedly pivoted out of said plane in both directions. The fastening arrangement comprises a female part 4 arranged on the stand and a male part 5 arranged on or belonging to the object. To facilitate adjustment of the plane object at rest, it is now proposed that the female part comprises a recess 6 with a circular-arc- shaped extent , which recess widens from inside and outwards and has a shoulder surface 10 also with a circular-arc-shaped extent. The male part 5 is narrower than the opening width of the recess 6, with an increasing gap width from the inside and outwards between the inner sides 8, 9 of the recess and the sides of the male part or the opposite sides. The male part is kept pulled in by prestressed spring force 15, with a complementary surface 14 bearing against the shoulder surface 10 of the recess 6, and the recess and the male part have interacting friction, which is acted on by the spring force. At the bottom, the recess 6 has a dividing gap, through which a means of exerting the spring force extends so that the means can have a point of action roughly in the centre of the circular arc and a point of action in the male part 5. <IMAGE> |
