| 摘要 |
A packaging case includes an upper casing, a lower casing, and a hinge device for linking the upper casing with the lower casing. The hinge device includes a first block and a second block for linking with the first block. A latching post is formed on the first block. The second block forms a plurality of engaging plate. Each engaging plate defines a slot through a lower edge thereof for latching with the latching post. Each slot has a receiving hole for receiving the latching post and a guiding hole for guiding the latching post. The guiding hole is generally wider toward the lower edge of each engaging plate. The narrowest portion of the guiding hole is slightly narrower than the latching post to firmly retain the latching post in the receiving hole.
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