Disclosed is a novel universal trundle comprising a fixing part, a ball and a trundle body, a cylinder is arranged in the middle of the fixing part, 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 so that the insertion rod can be inserted into the cylinder conveniently, and the insertion rod is inserted into the cylinder from the lower end of the cylinder and abuts against the ball at the upper end of the cylinder. The inserting rod can rotate relative to the cylinder, the ball can rotate relative to the cylinder, the inserting rod and the fixing piece, the inserting rod is a round rod with a smooth outer wall, the top face of the inserting rod is a plane with a smooth surface, the ball is a ball with a smooth surface, the round rod is matched with the inner diameter of the cylindrical space of the cylinder, and the lower end face of the cylinder is suspended. By arranging the ball, the load bearing of the caster is changed from the lower end of the cylinder to the lower part of the inserting rod to the load bearing of the fixing piece, the ball and the inserting rod, so that the rotation of the universal caster is changed from the friction of the circular ring surface between the lower end of the cylinder and the lower part of the inserting rod to the point friction between one point of the ball and the top surface of the inserting rod, and the friction force is greatly reduced.

    本发明公开了一种新型万向脚轮,包括固定件、圆球珠、脚轮,其中固定件的中间设置有圆筒,脚轮设置有插杆,圆筒的中间有内壁光滑的圆柱形空间以便插杆插入,插杆从圆筒的下端插入圆筒内并将圆球珠顶在圆筒的上端,插杆可相对于圆筒旋转,圆球珠可相对于圆筒、插杆、固定件旋转,插杆为外壁光滑的圆形棒,插杆的顶面为表面光滑的平面,圆球珠为表面光滑的球体,圆形棒与圆筒的圆柱形空间内径相匹配,圆筒的下端面悬空。通过设置圆球珠,使脚轮承重从圆筒的下端与插杆的下部之间改变到固定件、圆球珠、插杆来承重,使万向脚轮的旋转从圆筒的下端与插杆的下部之间圆环面的摩擦转变为圆球珠的一个点与插杆的顶面之间的点摩擦,大大减小了摩擦力。


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    Title :

    Novel universal trundle


    Additional title:

    一种新型万向脚轮


    Contributors:

    Publication date :

    2021-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge



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