| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a generation rate of a defective product; and to strengthen adhesive strength of a T-shaped joint and a shaft by reducing the possibility of causing positional dislocation between these members after fitting the T-shaped joint and the shaft. <P>SOLUTION: This badminton racket is formed by joining a frame and the shaft via an adhesive by inserting an upper end part of a hollow shaft 2 into a vertical shaft part 6 of the T-shaped joint by inserting horizontal both shoulder parts 5 of the T-shaped joint 4 into hollow both end parts of the frame 1 formed in an elliptic shape. A plurality of ribs 9 are formed in the shaft direction on an outside surface of the vertical shaft part of the T-shaped joint. <P>COPYRIGHT: (C)2004,JPO |
