| 摘要 |
A device (1) for ball-throwing training has a base (4) and at least two vertical guide posts (30, 31) longitudinally adjusted relative to each other. One end of one of the guide posts (30) is positioned at the base (4) and a distal end of another guide post (31) is positioned at the spacer element (35). A covering surface (2) is fixed to the spacer element (35) so as to at least partially obscure the view of a throwing target, and has an extendible screen (20) and a stretch frame (23). The 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) normally is arranged at right angles to the spacer element (35). In that position, the ground projection areas of covering surface (2) and stand base (4) do not overlap. |
| 主权项 |
1. A device (1) for ball-throwing training, which comprises
a stand base (4), a supporting structure (3) having at least two vertical guide posts (30, 31) able to be longitudinally adjusted relative to each other, and a spacer element (35), one end of one of the guide posts (30) being arranged at the stand base (4) and a distal end of another guide post (31) being arranged at the spacer element (35), a covering surface (2) which is fixed to the spacer element (35) so as to at least partially obscure the view of a a throwing target, and which comprises an extendible screen (20) and a stretch frame (23) able to be adjusted between the rigid upper end and the extendible lower end of the screen (20), wherein the 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 a first position, called the normal position, is arranged at right angles to the spacer element (35) and, in this normal position, the ground projection areas of covering surface (2) and stand base (4) do not overlap. |
