| 摘要 |
PROBLEM TO BE SOLVED: To construct a stable cushion by using a backrest linking cushion to support the back and both sides of a user. SOLUTION: When a user sits down with the back abutting on the side 6 of the backrest linking cushion, some connected cushion pieces 1, 2, 3, 4 having suitable elastic force and flexibility are bent toward the side 6 at the mutual connecting parts 5 to wrap both sides of the sitting user, thereby supporting the body of the user with good stability by the forces of the cushion pieces.
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