| 摘要 |
The invention relates to a device (1) for ball-throwing training, which comprises a stand-base (4) and a supporting structure (3) having at least two vertical guide posts (30, 31) able to be longitudinally adjusted relative to one another, and a spacer element (35), one end of one of said guide posts (30) being arranged at the stand-base (4) and a distal end of another guide post (31) being arranged at this spacer element (35). Said device also comprises a covering surface (2) which is fixed to said spacer element (35) so as to at least partially obscure the visibility of a playing field, particularly of a throwing target, and which comprises an extendable screen (20) and a stretch-frame (23) able to be adjusted between the rigid upper end and the extendable lower end of this screen (20). Said spacer element (35) is arranged, on the side of the guide post (31) that lies opposite the stand-base, in such a manner that the covering surface (2), in its normal position, is arranged at right-angles to this spacer element (35) and, in this normal position, the projection surfaces at the base of the covering surface (2), and the stand-base (4), do not overlap. |
