公开(公告)号：EP0625434A1

公开(公告)日：1994-11-23

申请号：EP94303367.0

申请日：1994-05-11

申请人： Pihlens, Alfred Percy Rudolf ,  Pihlens, Gertrude Maude

发明人： Pihlens, Alfred Percy Rudolf

IPC分类号： B60B33/02 ,  B60B33/00

CPC分类号： B60B33/0002 ,  B60B33/0007 ,  B60B33/0039 ,  B60B33/0049 ,  B60B33/0057 ,  B60B33/0068 ,  B60B2200/432 ,  B62B3/001 ,  B62B3/1492 ,  B62B2301/0465

摘要： A caster wheel assembly 1' for a shopping trolley comprises a support member 2' fixed to a trolley chassis, a carrier member 4' freely rotatable about a vertical axis 5' with respect to the support member 2', and a wheel 6' carried by the carrier member 4' so as to be rotatable about a horizontal axis 7' offset from the vertical axis 5'. A cam follower 24' in the form of two planet wheels 26' rotatably mounted on a lower portion 30 of the support member 2' engages a cam surface 21' having an undulating profile on the carrier member 4' in order to bias the wheel 6' of the assembly towards a direct forward line. In order to steer the trolley to one side or the other of the direct forward line, a sufficient steering force must be applied to the trolley in order to overcome this biasing action, and this overcomes any tendency of the trolley to move in a direction other than the intended direction of travel.

摘要翻译： 用于购物车的脚轮组件1'包括固定到手推车底盘的支撑构件2'，相对于支撑构件2'围绕垂直轴线5'可自由旋转的托架构件4'和承载的轮6' 通过承载构件4'能够绕垂直轴线5'偏移的水平轴线7'旋转。 形式为可旋转地安装在支撑构件2'的下部30上的两个行星轮26'形式的凸轮从动件24'与承载构件4'上具有起伏的轮廓的凸轮表面21'接合，以偏置车轮6 “组装到一个直接的前进线。 为了将手推车引导到直接前进线的一侧或另一侧，为了克服该偏置动作，必须对手推车施加足够的转向力，并且克服了滑车沿其他方向移动的任何倾向 比预期的旅行方向。