| 摘要 |
The invention is a fastening element (1) for the connection of bars (A, B) with mainly longitudinal development, comprising a shaped body with a substantially U-shaped profile, defined by a base (3) and by two side walls (4, 5) spaced from each other and projecting from the base (3). In the shaped body it is possible to identify the following: one pair of first through slits (6, 7) aligned along a first direction (X), each one made in a corresponding side wall (4, 5) in order to define a first gripping area of a first bar (A) and one pair of second through slits (12, 13) aligned along a second direction (Y) orthogonal to the first direction (X), each one made between the walls (4, 5) in order to define a second shaped area (14, 15) for gripping a second bar (B). Each second shaped area (14, 15) is defined by two opposing concave surfaces (14a, 15a) provided with elastically yielding counteracting reeds (21) and is delimited at one end by two opposing shaped projections (26) and at the opposite end by projecting corners (27) opposing each other. The length (L) of each second shaped area (14, 15), measured between the shaped projections (26) and the projecting corners (27), exceeds the width (W) of the same second shaped area (14, 15) measured between any two of its points at right angles to the longitudinal direction (Z). |
