| 摘要 |
A technical device, particularly an electromechanical deck for moving information carriers, has at least one plastics function part (25) formed on a metal plate, which part has been moulded onto the metal plate (8) by outsert-moulding and comprises at least one bridge element (28), which traverses a hole (26) in the metal plate (8), and retaining elements (30, 31), which are situated on the metal-plate surfaces (8a, 8b) and are interconnected by the bridge element (28), the movability of the function part (25) as a slidable or rotatable part being obtained automatically through shrinkage of the plastic by the following construction: a) the bridge element and the retaining elements are formed as tubular elements (28, 30, 31), b) the tubular retaining elements (30, 31) surround the edges of the hole (28) with a clearance (a) over the entire circumference, c) the bridge element (28) and the retaining elements (30, 31) are connected at the peripheral location of the hole (26) by an imperforate or perforate plastic film (32), d) the plastic film (32) exhibits an orientation in the film plane at least at one of the metal-plate surfaces (8b, 8c), e) the material cross-section of the tubular retaining elements in the area (a) and the material cross-section of the tubular bridge element in the area (b) are dimensioned in such a manner that the tubular retaining elements (30, 31) and the tubular bridge element (28) are subject to a shrinkage such that it compensates for the tendency of the tubular elements (30, 31) to be shrunk onto the metal plate (8) by warping of the plastic film caused by said shrinkage.
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