| 摘要 |
PURPOSE: A pin joint structure of a watch chain is provided, which interlinks a watch chain quickly and stably and has good feeling of wearing. CONSTITUTION: A pin joint structure of watch chain comprises: a plurality of pin joint parts in which joints are formed; a connection apparatus which is equipped with a joint molded by porcelain and interlinks each pin joint part; a pin joint groove formed in both sides of a pin joint part; an inner cavity which is formed in order to pass through a middle of pin joint groove. A pin joint part is a linked set coping with a joint. A block line is formed to be symmetrical with a pin joint groove of a joint in both side convex portion. A respective crevice is formed in a punch position corresponding to a block line in-between pin joint groove, and accepts a connection rid groove of a connection apparatus. A connection apparatus is installed in hole of a joint, interlinks and fixes a joint and pin joint part.
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