The present disclosure provides a sliding member including a first sliding body, a second sliding body opposite to the first sliding body, a connection body connected between the first sliding body and the second sliding body, a first convex body disposed on the first sliding body, and a second convex body disposed on the first sliding body. The first convex body has two convex ribs and two convex portions disposed on a top side of the first sliding body to respectively adjacent to the two convex ribs. A movable cover body has two sliding portions respectively movably contacting the two convex ribs and respectively separately contacting the two convex portions. The instant disclosure further provides a zipper head assembly structure using the sliding member.

A movable cover body for decreasing assembling resistance includes a major portion, two sliding portions extended outwardly from the major portion and respectively slidably disposed inside two sliding grooves, a positioning portion extended outwardly from the major portion and movably passing through a through opening, two pivotal portions extended outwardly from the major portion and respectively pivotally disposed inside two pivotal grooves, an extending tail portion extended outwardly from the major portion and disposed inside a receiving groove, and two assembly chamfers respectively disposed on two inner corners of the two pivotal portions and respectively corresponding to two inclined assembly surfaces. The instant disclosure further provides a zipper head assembly structure using the movable cover body.

A zip slider has: a slider body having upper and lower elements providing two entry channels through which zip teeth pass and slider un/mating; a pull tab having a cam; a biasing spring having a locking prong and a follower surface bearing against the cam. The cam on the follower surface biases the tab into a closed position in which it lies against the upper element. When the tab is in a lifted position, the cam action on the follower surface raises the prong above the mated teeth, enabling relative motion of the teeth and body; when the tab is in the closed position, the prong bears against the teeth to prevent unwanted relative slider and teeth motion. The slider has a counter bias, acting between the upper element and the tab to apply a biasing force on the tab acting against the action of the cam and follower surface.

The instant disclosure provides a zip slider structure including a slider body, a tab-holder and a pull-tab arranged between the tab-holder and the slider body. The slider body includes a first slide portion, a second slide portion and a connecting portion including a joint recess. The first slide portion includes a first slide surface, an arranging surface, a first recess, a second recess and a first extension end. The tab-holder includes a body portion, a first bending portion extending from one end of the body portion and passing the first recess, and a second bending portion extending from the other end of the body portion. The first bending portion includes a slot joining with the first extension end, the second bending portion includes a holding end joining with the joining recess, the body portion includes an attaching member extending from the body portion and joining with the second recess.

A slider operable in a simple operation manner and capable of reducing an overall volume is provided. The slider includes: a slider body; a claw member positioned on the slider body and having a lock pin portion extending to an interior of the slider body to establish a locked state; an operation piece positioned on the slider body and connected to the claw member. The operation piece has first and second shaft portions that are separately positioned. The operation piece is rotatably positioned on the slider through the first shaft portion and connected to the claw member through the second shaft portion. Upon pressing the operation piece and enabling one side of the operation piece to rotate toward the slider with the first shaft portion as an axis center, the second shaft portion lifts the claw member to release the locked state in the interior of the slider body.