SLIDER

To achieve improvement of abrasion resistance and weight reduction of a slider of a slide fastener.SOLUTION: A slider 3 includes an upper wing plate 6 and a lower wing plate 7 facing each other with a vertical interval, a connection column 8 for connecting the upper wing plate and the lower wing plate between front parts of both of the plates, left and right flanges 9 projecting in a direction of narrowing the vertical interval between the upper wing plate and the lower wing plate from at least one of the upper wing plate and the lower wing plate horizontally with respect to the connection column, and an element path 12 formed between the upper wing plate and the lower wing plate. The connection column is provided with a reinforcement member 8a for the connection column at least at a portion of a part facing the element path, and a flange is provided with a reinforcement member 9a for the flange at least at a portion of a part facing the element path. Materials of the reinforcement member for the connection column and the reinforcement member for the flange have heavier specific gravity and more excellent abrasion resistance than the upper wing plate and the lower wing plate do.SELECTED DRAWING: Figure 1 【課題】スライドファスナーのスライダーの耐摩耗性の向上と軽量化を両立する。【解決手段】スライダー３は、上下に間隔をあけて対向する上翼板６および下翼板７、上翼板と下翼板とを両者の前部同士の間で連結する連結柱８、連結柱に対して左右において上翼板と下翼板との少なくとも一方から上翼板と下翼板との上下間隔を狭める方向に突出する左右のフランジ９、上翼板と下翼板との間に形成されるエレメント路１２を備える。連結柱はエレメント路に対面する部分の少なくとも一部に連結柱用補強部材８ａを備え、フランジはエレメント路に対面する部分の少なくとも一部にフランジ用補強部材９ａを備える。連結柱用補強部材とフランジ用補強部材の材質は、上翼板と下翼板よりも比重が重く且つ耐摩耗性に優れたものである。【選択図】図１