Patent ID: 8782857

Claim:
A slider for a slide fastener with a stop mechanism, comprising: a slider body having upper and lower blades and a guide post for connecting front end portions of the upper and lower blades; a pull tab having an axis at one end portion of a pull tab body; and a bent leaf spring member, wherein the upper blade includes a claw hole formed at a side of the rear mouth of the slider body, a first post portion standing up at a front side with respect to the claw hole, and a second post portion standing up at a rear side with respect to the first post portion, wherein the leaf spring member includes a substrate portion pushing the axis of the pull tab from an upper side, a stopper claw portion extending from a rear end portion of the substrate portion, and a tongue portion extending downward from the substrate portion, and the leaf spring member is fitted into the slider body such that the stopper claw portion is able to be inserted into or released from an element guide path of the slider body by rotation of the pull tab, wherein the pull tab is configured such that a center surface of the pull tab body in a thickness direction thereof is disposed flush with a center surface of the axis in a thickness direction thereof, wherein the leaf spring member includes a first restraining portion which is disposed at the tongue portion and abuts against the first post portion to restrain upward movement of the leaf spring member, and a second restraining portion which is disposed on the substrate portion at a side of the stopper claw portion with respect to the tongue portion, and abuts against the second post portion to restrain the upward movement of the leaf spring member, wherein if an inclined angle a of the pull tab with respect to an upper surface of the upper blade is defined as 0° when the pull tab lies down backward, the first and second restraining portions are respectively disposed at positions to be spaced apart from the first and second post portions when the inclined angle α of the pull tab is in a range of 0°≦α≦180° while the axis of the pull tab abuts against the upper surface of the upper blade, and wherein the first and second restraining portions are disposed in a relation to respectively abut against the first post portion and the second post portion, and thus restrain the upward movement, when the axis of the pull tab is spaced apart from the upper blade, wherein the second restraining portion is disposed in a relation to abut against the second post portion and thus restrain the upward movement, when the pull tab is operated to further lift up the substrate portion of the leaf spring member from a state in which the first restraining portion abuts against the first post portion and thus the upward movement is restrained or while the first restraining portion abuts against the first post portion to restrain the upward movement.