公开(公告)号：US06374954B1

公开(公告)日：2002-04-23

申请号：US09736203

申请日：2000-12-15

Applicant: Chih-ching Cheng

Inventor： Chih-ching Cheng

IPC: B60B3300

CPC classification number: B60B33/0028 ,  A47D13/043 ,  B60B33/0042 ,  B60B33/0049 ,  B60B33/0057 ,  B60B33/0068 ,  B60B33/0073 ,  B60B33/0094 ,  B60B33/021

Abstract: A baby walker speed control caster. The speed control caster includes an axle piece, a pair of wheels symmetrically provided at either side of the axle piece, and a ball. The axle piece is provided with a pivot hole, a through hole, and a pivot shaft. Each wheel is formed in a thickness radially increasing respectively from the adjacency of the wheel center and is provided with a pivot hole at the center and a plurality of embossing curves at the inner side; in this way, the wheels are pivotably connected to each other by a pivot axle passing through the pivot holes of the wheels and the axle piece sandwiched between the wheels such that a chamber, containing the ball, is formed by the through hole of the axle piece and the inner walls of the wheels and the width between two inner walls increases radially from the adjacency of the wheel center. As the baby walker moves faster, the ball is squeezed between two inner walls of the wheels when the ball is swept toward the far side of the chamber by the embossing curves, thus producing a remarkable brake effect due to the friction between the axle piece and the wheels via the ball.

Abstract translation: 婴儿步行速度控制脚轮。 速度控制脚轮包括轴件，对称地设置在车轴件两侧的一对车轮和一个球。 轴件设置有枢轴孔，通孔和枢轴。 每个轮分别形成为从车轮中心的邻接处径向增加的厚度，并且在中心处设置有枢转孔和在内侧具有多个压花曲线; 以这种方式，车轮通过枢转轴线可枢转地连接，所述枢转轴通过车轮的枢转孔和夹在车轮之间的轴件，使得容纳球的腔室由轴的通孔形成 车轮的内壁和两个内壁之间的宽度从车轮中心的相邻处径向增加。 当宝宝步行者移动得更快时，当球通过压花曲线向球体的远侧扫掠时，球被挤在车轮的两个内壁之间，由此产生明显的制动效果，这是由于轴件和 车轮通过球。