Spare magazine and stapler having the same

A spare magazine adapted to be installed in a stapler and adapted for storing a plurality of spare staples, said spare magazine comprising:

• a casing unit defining a receiving space and a pivot space that extends in a height direction from an end of said receiving space, said casing unit having a casing opening that is directly and spatially communicated with said receiving space and said pivot space;
• a pivot member pivotally disposed in said pivot space of said casing unit, and having
• a pivot end that is connected to said casing unit and that serves as a pivot of said pivot member, and
• a positioning pin that is distal from said pivot end, and that extends into said receiving space of said casing unit;
• and
• a sliding carrier having
• a carrier body that is slidably received in said receiving space of said casing unit, that defines a storage space adapted for storing the spare staples, and that has a push end being exposed at said casing opening of said casing unit for access to a user, and
• a main track portion that protrudes from said carrier body in the height direction, and that has
• an island block having a concave end and a tapered end that are respectively proximate to and distal from said push end of said carrier body, and
• a surrounding wall surrounding and being spaced apart from said island block, having a protruding guide end that is proximate to and protrudes toward said concave end of said island block, and cooperating with said island block to define a main track therebetween, said positioning pin of said pivot member being inserted into said main track and being slidable in said main track along a heart-shaped route;
• wherein said sliding carrier is slidable parallel to a length direction which is perpendicular to the height direction relative to said casing unit between a closed position and a first open position, said positioning pin being slidable in said main track along the heart-shaped route during the sliding movement of said sliding carrier parallel to the length direction;
• wherein, when said sliding carrier is at the closed position, said push end of said sliding carrier is disposed at said casing opening of said casing unit such that said storage space of said sliding carrier is enclosed in said casing unit, said positioning pin is proximate to said protruding guide end of said surrounding wall and abuts against said concave end of said island block, and an imaginary plane extending through a geometric center line of said positioning pin which extends in the height direction and being perpendicular to the length direction intersects a first plane extending through said protruding guide end and being perpendicular to a width direction which is perpendicular to the height direction and the length direction at an intersection which does not overlap the geometric center line of said positioning pin;
• and
• wherein, when said sliding carrier is at the first open position, said push end of said sliding carrier is disposed outside of said casing opening of said casing unit such that said storage space is exposed to the external environment, said positioning pin is proximate to said tapered end of said island block, and another imaginary plane extending through the geometric center line of said positioning pin and being perpendicular to the length direction intersects a second plane extending through said tapered end and being perpendicular to the width direction at an intersection which does not overlap the geometric center line of said positioning pin.