The invention discloses a linkage folding cart. The linkage folding cart comprises: a cart frame front rod, a cart frame rear rod, a push rod and a supporting rod, wherein the cart frame rear rod comprises a lower rear rod and an upper rear rod arranged above the lower rear rod, the upper rear rod can slide and stretch relative to the lower rear rod to make the cart frame rear rod switched betweenan extension state and a contraction state, and the rear end of the frame front rod is rotatably connected with the front end of the upper rear rod in order to make the cart frame front rod switchedbetween a first position and a second position; a connecting rod, wherein the lower end of the connecting rod is rotationally connected with the lower rear rod; and a crank, wherein the lower end of the crank is rotatably connected with the upper end of the connecting rod, the upper end of the crank is fixedly connected with the supporting rod so as to be driven by the supporting rod to rotate, and the connecting rod, the crank, the upper rear rod and the lower rear rod form a crank sliding block mechanism so as to drive the cart frame rear rod to be switched between the extension state and the contraction state when the supporting rod moves. The linkage folding cart is sufficient in driving force and low in overall height after being folded.

    本发明公开了一种联动收合的推车,联动收合的推车包括车架前杆,车架后杆,推杆,撑杆,车架后杆包括下后杆和设于下后杆上方的上后杆,上后杆可相对下后杆滑动伸缩以使车架后杆可在伸长状态和缩短状态之间切换,车架前杆的后端与上后杆的前端转动连接以使车架前杆可在第一位置和第二位置之间切换;连杆,连杆的下端与下后杆转动连接;曲柄,曲柄的下端与连杆的上端转动连接,曲柄的上端与撑杆固定连接以由撑杆驱动其转动,连杆、曲柄、上后杆和下后杆构成曲柄滑块机构,以在撑杆活动时带动车架后杆在伸长状态和缩短状态之间切换。本发明的联动收合的推车驱动力足且折叠后整体高度较低。


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    Title :

    Linkage folding cart


    Additional title:

    联动收合的推车


    Contributors:
    SHEN JIAN (author)

    Publication date :

    2020-07-03


    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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