Cap structure and zipper head assembly structure

A zipper head assembly structure, comprising:

• a sliding member having a first retaining seat and a second retaining seat, wherein the first retaining seat has a hook groove, and the second retaining seat has a hook hole;
• a pull tab having an end portion disposed between the first retaining seat and the second retaining seat;
• a locking hook disposed on the sliding member, wherein the locking hook has a first end portion disposed inside the hook groove and a second end portion passing through the hook hole;
• a cap body having two opposite end portions respectively disposed on the first retaining seat and the second retaining seat, wherein the cap body has at least two first retaining blocks corresponding to each other and at least two first through holes corresponding to each other and respectively adjacent to the at least two first retaining blocks, wherein the cap body has an inner surface, an outer surface and a bottom surface connected between the inner surface and the outer surface, and the at least two first through holes pass through the cap body to form two breach holes between the inner surface and the outer surface of the cap body;
• and
• an elastic piece disposed between the inner surface of the cap body and the locking hook and abutted against the locking hook, wherein the at least two first retaining blocks contact the elastic piece for retaining the elastic piece;
• wherein each of the first retaining blocks has an inner surface extending inwardly from the inner surface of the cap body, and the inner surface of the first retaining block is inclined at a first adjustable angle relative to the inner surface of the cap body;
• wherein each of the first retaining blocks has a first top side surface, a first bottom side surface opposite to the first top side surface, and a first front surface connected between the first top side surface and the first bottom side surface, and the elastic piece is supported by the two first top side surfaces of the at least two first retaining blocks so as to hold the elastic piece on a predetermined plane without being changed by a change of the first adjustable angle.

A zipper head assembly structure, comprising:

• a sliding member;
• a locking hook disposed on the sliding member;
• a pull tab having an end portion disposed between the sliding member and the locking hook;
• a cap body disposed on the sliding member, wherein the cap body has at least two retaining blocks and at least two through holes;
• and
• an elastic piece disposed on the cap body and abutted against the locking hook;
• wherein the retaining block has an inner surface inclined at an adjustable angle relative to an inner surface of the cap body, and the elastic piece is supported by the at least two retaining blocks so as to hold the elastic piece on a predetermined plane without being changed by a change of the adjustable angle.