| 摘要 |
A rigid frame structure has a corner retaining configuration for retaining a sheet member to an inside corner of the frame structure. First and second panel members are arranged to form the frame structure's inside corner. A gap of nominal gap width is disposed at the inside corner between a rear edge of the second panel member and a face of the first panel member. One or more retaining members partially close the gap to provide corresponding areas of reduced gap width. Each retaining member is formed on or attached to a surface of the first or second panel member that defines a first or second side of the gap without mechanical fastening to both sides of said gap. The nominal gap width is sized to receive one or more bead elements on the sheet member, and the reduced gap width traps the one or more bead elements within the gap, thereby retaining the sheet member to the inside corner.
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