The invention discloses a linkage type mechanism which comprises a first joint, a second joint, an upper pipe, a front pipe and a rear pipe. The first joint is hinged to the second joint; the near end of the upper tube is fixedly connected to the first joint; the near end of the rear tube is fixedly connected to the second joint; the near end of the front tube is hinged to the first joint; the second joint is hinged to a sleeve, and the sleeve is slidably connected to the front pipe in a sleeving mode. The outer surface of the front pipe is provided with at least one sliding groove extending in the length direction of the front pipe, the sleeve is provided with a movable locking structure corresponding to the sliding groove, and the locking structure can be clamped into the sliding groove or separated from the sliding groove. The invention further discloses a folding frame and a cart. The invention has the beneficial effect that a normal unfolding state can be maintained under the condition of large load capacity.

    本发明公开了一种联动式机构,包括第一关节、第二关节、上管、前管、后管;第一关节和第二关节相铰接;上管的近端固定连接在第一关节上;后管的近端固定连接在第二关节上;前管的近端铰接在第一关节上;第二关节铰接有套管,套管滑动套接在前管上;前管的外表面具有至少一个沿其长度方向延伸的滑槽,套管上设有和滑槽对应并且可活动的锁紧结构,锁紧结构可卡入滑槽或者脱离滑槽。本发明还公开了一种折叠架以及推车。本发明的有益效果在于,能够在载重量较大的情况下维持正常的展开状态。


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    Title :

    Linkage type mechanism, folding frame and cart


    Additional title:

    一种联动式机构、折叠架以及推车


    Contributors:
    YOU XIONGBING (author) / XIANG ERYING (author) / WANG ZHEN (author)

    Publication date :

    2022-03-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS



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