| 摘要 |
A cushion assembly includes a retarding member, a support member and an urging member. The retarding member has a base portion and an upper portion formed with an upper end face, and is formed with a guiding hole extending inwardly and axially from the upper end face. The support member includes a support disc disposed above the upper end face of the retarding member, and a guiding post extending from the support disc into the guiding hole in the retarding member 4 . The urging member is sleeved around the retarding member for urging the support disc upwardly and axially away from the retarding member.
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