| 摘要 |
The present invention provides a waist adjusting device which allows reduction of the number of parts, an operating piece to exert its elastic performance accurately with respect to a slider body and a smooth engagement/disengagement operation. An adjusting belt has a plurality of adjusting protrusions provided on the surface thereof and a slider body has a through portion through which the adjusting belt is capable of being inserted to the right and left and further insertion holes in which an operating piece is inserted, provided on upper and lower portions of the slider body. Slope portions inclined outward are provided on both sides of the lower insertion hole. The operating piece has engaging protrusions on one face and elastic leg portions on both sides, provided integrally with a main body thereof. Ends of the elastic leg portion are brought into an elastic contact with the slope portions so that the operating piece is always urged upward so as to allow the adjusting protrusions and the engaging protrusions to engage with each other. By pressing the operating piece resisting an elastic force of the elastic leg portion, engagement between the adjusting protrusions and the engaging protrusions is released so as to adjust the length of the waist. When the operating piece is released, it is restored upward by an elastic force so that both the protrusions engage with each other. A prominent feature of this invention is that the operating piece can be moved smoothly by the slope portions and the elastic leg portions.
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