| 摘要 |
Device for rackets (1) which have a frame (4) in which a number of intersecting strings (5, 6) are tensioned. Spring elements (7) are arranged on some of the strings (5, 6) for exerting a spring force on the strings in their longitudinal direction for the purpose of counteracting changes in the tension of the strings. The spring elements (7) are situated inside the frame (4) and are designed to produce, in the string (5) in question, an arched deviation from its essentially rectilinear extension. The spring element (7) is designed with a central arched part over which the string runs and which is designed to be deformed in an elastically flexible manner in order to counteract changes in the tension of the string. Two end parts of the spring element each have an opening through which the string extends. The end parts are curved in the opposite direction to the central part forming, outside the associated openings away from the convex bearing surface of the central part, likewise convex bearing surfaces for the string, over which the latter is deflected. |
