Disclosed is a universal trundle comprising a fixing piece and a trundle body, the fixing piece is provided with a cylinder, the trundle body is provided with an insertion rod, a cylindrical space with the smooth inner wall is formed in the middle of the cylinder, the insertion rod can rotate relative to the cylinder and slide in the axial direction of the insertion rod, the insertion rod is a round bar with the smooth outer wall, and the lower end face of the cylinder is suspended. Grease is coated between the outer side wall of a circular rod and the inner side wall of the cylindrical space, the outer diameter of the circular rod matches the inner diameter of the cylindrical space, and an air column with a buffering function is sealed between the top surface of the circular rod and the cylindrical space of the cylinder; the insertion rod and the cylinder are sealed to form negative pressure to prevent the insertion rod from falling or prevent the top surface of the circular rod from being in contact with the upper end of the cylinder. The air column with a buffering function is sealed in the top surface of the round bar and the cylindrical space of the cylinder, and the sealing of the insertion rod and the cylinder can form negative pressure when the insertion rod falls off to prevent the insertion rod from falling off or prevent the top surface of the round bar from being in contact with the upper end of the cylinder when the insertion rod is stressed, so that the friction force is greatly reduced.

    发明公开了一种万向脚轮,包括固定件、脚轮,固定件设置有圆筒,脚轮设置有插杆,圆筒的中间有内壁光滑的圆柱形空间,插杆可相对于圆筒旋转和沿插杆的轴向方向滑动,插杆为外壁光滑的圆形棒,圆筒的下端面悬空,圆形棒的外侧壁与圆柱形空间的内侧壁之间涂有油脂,圆形棒的外径与圆柱形空间的内径匹配且圆形棒的顶面与圆筒的的圆柱形空间密封有可缓冲作用的气柱,插杆与圆筒的密封可形成负压来阻止插杆掉落或阻止圆形棒的顶面与圆筒的上端接触。通过在圆形棒的顶面与圆筒的的圆柱形空间密封有可缓冲作用的气柱,插杆与圆筒的密封可在插杆掉落时形成负压来阻止插杆掉落或在插杆受力时阻止圆形棒的顶面与圆筒的上端接触,大大减小了摩擦力。


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    Titel :

    Universal trundle


    Weitere Titelangaben:

    一种万向脚轮


    Beteiligte:
    ZHANG YANQIU (Autor:in) / ZHANG RUIDONG (Autor:in)

    Erscheinungsdatum :

    2021-12-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge



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