CN CN224528882U
本实用新型公开了双中管纵折联轴折叠车架，包括前车架、上中管、下中管、后车架、上座管夹、下座管夹、座杆、五通管、旋转轴；前车架包括上横梁、下横梁、车头管，上横梁、下横梁一端与车头管侧面连接，上横梁另一端与上中管侧面连接，下横梁另一端与轴筒顶部连接，后车架包括后上叉、后下叉，后上叉一端与下中管上端侧面连接、另一端穿过下中管两侧面后与下横梁通过旋转轴转动连接，后上叉、后下叉另一端通过后插片相互连接；上座管夹和下座管夹分别套接在上中管和下中管的顶端，座管穿在上中管和下中管内孔中。本实用新型通过上座管夹和下座管夹的锁扣来控制座杆与前车架、后车架之间的折叠与展开完成自行车的折叠，对车架整体强度无影响。
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