A slide fastener includes: a first slide fastener member and a second slide fastener member. The first slide fastener member includes a first cloth tape, a first element row, a slider, and a retainer pin member. The second slide fastener member includes a second cloth tape, a second element row, and a separable pin member. When the retainer pin member and the separable pin member are engaged with each other, a slider accommodating area is formed. An inclined protrusion is provided on a retainer pin arm. When the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the inclined protrusion abuts against an outer peripheral side of the slider and drives the slider to be inclined toward the separable pin member.

A slide fastener includes: a first slide fastener member and a second slide fastener member. The first slide fastener member includes a first cloth tape, a first element row, a slider, and a retainer pin member. The second slide fastener member includes a second cloth tape, a second element row, and a separable pin member. When the retainer pin member and the separable pin member are engaged with each other, a slider accommodating area is formed. An inclined protrusion is provided on a retainer pin arm. When the retainer pin member and the separable pin member are engaged with each other and the slider is located in the slider accommodating area and abuts against the retainer pin main body, the inclined protrusion abuts against an outer peripheral side of the slider and drives the slider to be inclined toward the separable pin member.

The present invention provides a double-separating and double-pulling zipper comprising a left tape extension, a right tape extension, a first slider, a second slider, two zipper teeth row. The two zipper teeth row are respectively arranged on the inner edges of the left tape extension and the right tape extension. The first slider and the second slider are slidably arranged on the two zipper teeth row, and the first slider and the second slider are pulled so that the left tape extension and the right tape extension are opened or closed. Therefore, the zipper of the present invention can be opened and closed in a two-way manner, making it applicable to partition structures to achieve the effect of space separation. Further, the zipper made of plastic materials can be applied to patient gowns, allowing patients to undergo MRI examinations directly while maintaining their self-esteem during various examinations.

In a slide fastener, at a slider pull-up start position in which an insert pin is inserted into an insert pin insertion hole of a box body and a slider is in contact with the front surface of the box body, an engaging head portion of the rearmost element of one fastener element row approaches or comes into contact with an engaging portion provided on the insert pin.

A lower zipper stopper and a zipper. The lower zipper stopper comprises a lower stopper surface member (4) and a lower stopper bottom member (5). The lower stopper surface member (4) comprises a surface member cylinder (4.3), a hook (4.4) protrudes from an outer peripheral surface of the surface member cylinder (4.3), the hook (4.4) comprises a hook-shaped structure formed by a butt-joint between a guide rod portion (4.4b) and a hook protrusion (4.4a), and the hook protrusion (4.4a) is positioned at the bottom of the hook (4.4) in the axial direction. A main groove (5.3) is provided in the middle of the lower stopper bottom member (5), a bottom member guide protrusion (5.4) and a bottom member limiting protrusion (5.9) are arranged on an inner peripheral surface of the main groove (5.3), the bottom member guide protrusion (5.4) and the bottom member limiting protrusion (5.9) are sequentially arranged in the peripheral direction, and a guide channel (5.11) is formed between the bottom member guide protrusion and the bottom member limiting protrusion. During assembly, firstly, the lower stopper surface member (4) and the lower stopper bottom member (5) are axially aligned; then, the lower stopper surface member (4) and the lower stopper bottom member (5) rotate while axially moving until the lower stopper surface member and the lower stopper bottom member axially abut against each other; and finally, the lower stopper surface member (4) rotates, such that the hook (4.4) is snap-fitted with the bottom member limiting protrusion (5.9), thereby realizing axial limiting. The step of manually determining whether the lower stopper surface member (4) and the lower stopper bottom member (5) are connected in place can be omitted, and use is facilitated.

The two-way separator includes a pair of fastener stringers and a pair of sliders. The fastener stringers include fastener tapes, element columns, and a separable pin and a retainer pin. The sliders are disposed on the fastener stringers. Each of the sliders has a slider body and a lock pin. The separable pin has a separable pin body, a separable pin protrusion, and a groove. The retainer pin has a retainer pin body and a retainer pin protrusion. The separable pin protrusion has a half tooth portion and a tilt portion. The tilt portion has a tilt surface that tilts from an upper surface of the separable pin body toward a projecting side edge of the half tooth portion and tilts from an upper side toward a lower side, and a dimension of the tilt portion in an up-down direction is greater than a protrusion amount of the lock pin.