Slider for slide fastener

A slider for a slide fastener including:

• a slider body having an upper blade and a lower blade that are spaced with a predetermined gap in an up-down direction and connected with each other at front portions with a connecting post therebetween;
• a tab;
• and
• a tab holder that holds the tab between an upper surface of the upper blade and a lower side of the tab holder to be movable and rotatable,
• wherein at least the slider body and the tab holder are made of a resin material,
• a first column portion and a second column portion installed at front and rear portions on the upper surface of the upper blade are included,
• engaging portions are formed on a front side of the first column portion and a rear side of the second column portion, respectively,
• the tab holder is configured by a plate-shaped cover body having an upper wall portion, and a front wall portion and a rear wall portion extending downward in a longitudinal direction of the upper wall portion,
• an engaged portion that is elastically engaged and attached to the engaging portion of the first column portion is formed on a rear inner side of the front wall portion,
• an engaged portion that is elastically engaged and attached to the engaging portion of the second column portion is formed on a front inner side of the rear wall portion,
• in the first column portion, an inclined surface continuously extends downward from a rear side upper edge portion of the first column portion towards the front side of the first column portion and is formed at a center portion in a left-right width direction of the first column portion, support walls extend from the rear side upper edge portion of the first column portion along both left and right edge portions of the inclined surface of the first column portion, and a front edge portion on a front side of the inclined surface of the first column portion is disposed further inside than an end face of a front side of the support walls of the first column portion,
• in the second column portion, an inclined surface continuously extends downward from a front side upper edge portion of the second column portion towards the rear side of the second column portion and is formed at a center portion in the left-right width direction of the second column portion, support walls extend from the front side upper edge portion of the second column portion along both left and right edge portions of the inclined surface of the second column portion, and a front edge portion on a rear side of the inclined surface of the second column portion is disposed further inside than an end face of a rear side of the support walls of the second column portion,
• in the first column portion, a wall portion is disposed between a rear side of a recession of the first column portion and a rear side of the first column portion, wherein the wall portion is as high as the rear side of the upper edge portion of the first column portion,
• in the second column portion, a wall portion is disposed between a front side of a recession of the second column portion and a front side of the second column portion, wherein the wall portion is as high as the front side of the upper edge portion of the second column portion,
• the recessions are formed on the inclined surfaces of the first column portion and the second column portion, respectively, and for each of the first column portion and the second column portion, a right side edge of the inclined surface is between the recession and one of the support walls and a left side edge of the inclined surface is between the recession and another of the support walls, and
• when the tab holder is engaged and attached to the first column portion and the second column portion, protrusions fit in the recessions, the protrusions are formed on an inner side of the tab holder which faces the first column portion and the second column portion, respectively, and stepped portions at the front wall portion of the tab holder contact inner sides and end surfaces of the support walls of the first column portion and stepped portions at the rear wall portion of the tab holder contact inner sides and the end surfaces of the support walls of the second column portion.