| 摘要 |
An improved button structure is composed of a pillar element and a zinc casting body. The pillar element is provided with a hollow cylinder at the bottom and an expanding disk, which is provided with pluralities of hollow-out holes, on the top. The zinc casting body is provided with a smooth plane at the upper surface, and pluralities of engaging posts, which have positioning portions, at the bottom surface. The hollow-out holes of the pillar element are mounted on the engaging posts of the zinc casting body, such that the pillar element can be positioned at the positioning portions of the engaging posts and further mortised to lock to the top end of the engaging posts which extrude out of the disk to form blunt heads to accomplish a firm combination, thereby enhancing the benefit in production.
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