| 摘要 |
PROBLEM TO BE SOLVED: To improve a fall-off prevention means of a wedge member provided on an angle adjustment metal fitting.SOLUTION: In an angle adjustment metal fitting 10, a first arm 1 having a receiving face 3z is connected with a second arm 9 having a gear plate 9L in which a gear 9La is formed to a peripheral part thereof so that the second arm 9 is connected to be rotatable around the center of a rotational axis O and relative to the first arm 1 in forward and reverse directions S, G. A space 5 is formed between a receiving face 3z and the gear 9La. A wedge member 7 is disposed in a space 5 to prevent rotation in the reverse direction G of the second arm 9. The wedge member 7 has a tooth face 7a meshed with the gear 9La and an abutment face 7c abutting on the receiving face 3z. Furthermore, a restriction part 7L is integrally formed to the wedge member 7 to abut on at least one of right and left side faces 9Lb, 9Lc of the gear plate part 9L to restrict movement in at least one direction out of right and left directions of the wedge member 7. |
