| 摘要 |
<p>The object of the invention is to provide a method for manufacturing a seat belt anchorage plate forming a belt mounting clamp capable of completely lowering surface pressure which is exerted on a belt even when tension acts on the belt. According to the invention, it is provided a sheet metal (2) having a one surface (22a) and the other surface (22b) in the reverse side of the one surface (22a). A protruding portion (23) which protrudes from the other surface (22b) in a first direction from the one surface (22a) side to the other surface (22b) side is formed by drawing process of press-working, so that a curved surface (R1) is formed which is curved in a circular arc shape from the one surface (22a) to an inner surface of the protruding portion (23). A bottom of the protruding portion (23) is punched out so as to form a slot (6) which is composed of a first long edge (691), a second long edge (692) opposed to the first long edge (691) and short edges (7) connecting the first and the second long edges (691, 692). An end part of the protruding portion is folded back (23) by curling process of press-working so that the end part of the protruding portion (23) comes close to the other surface (22b) of the sheet metal (2), thereby forming a first protrusion (611). The first protrusion (611) has a curved surface (R2) which is smoothly curled from the inner surface of the slot (6) to the first protrusion (611). <IMAGE> <IMAGE> <IMAGE> <IMAGE></p> |
