| 摘要 |
A backrest folding structure of an electric cart seat is formed of a first tubular member connected to the seat backrest, a second tubular member connected to the seat main body, a retaining member slidably disposed in the first tubular member, and an elastic member disposed in the first tubular member to provide the retaining member with a spring force enabling the retaining member to be partially jutted out of the first tubular member. The first tubular member and the second tubular member are pivoted together such that they are located at an unfolding position at such time when the retaining member is extended into the second tubular member, and that they are located at a folding position at the time when the retaining member is slid back into the first tubular member.
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