| 摘要 |
PURPOSE:To uniformly support the surface of a human body, improve safety, and thoroughly exert the strength of a belt by rotatably fitting a belt holding metal to the main body of an insertion metal plate and adequately holding the folded angle of the belt. CONSTITUTION:A lock hole (a) and a belt hole (b) are provided on the main body of an insertion metal plate, and a round hole (c) is provided in the center. In addition, a circular section (d) behind a belt holding metal 2 is made larger in circumference than the hole (c) so that it can not pass the hole (c), and it is covered with a cover 3 at the front side. A belt is inserted through the belt hole (b) from the front side to the rear side and further through the belt holding metal 2. Accordingly, when the belt is in use, its folded angle is freely changed by the belt holding metal 2, and the three-point support belt can be uniformly held. The surface of a human body is uniformly supported, safety is improved, and the strength of the belt can be thoroughly exerted. |
