公开(公告)号：US20210016603A1

公开(公告)日：2021-01-21

申请号：US16978849

申请日：2019-03-25

Applicant: NSK LTD.

Inventor： Mayuko MORI ,  Kei KONDO ,  Yasunori OOISHI ,  Satoshi OZAKI

IPC: B60B33/00 ,  B62B5/04 ,  B62B5/00

Abstract: To be self-propelled in a simple configuration and to perform manual operation smoothly and briskly. A driving wheel includes: a base portion; a rotating shaft (first shaft) rotatably provided with respect to the base portion; a rotation member rotatably provided around the rotating shaft; a drive shaft (second shaft) provided on the rotation member orthogonally to the rotating shaft; a drive wheel provided on the rotation member and rotatable around the drive shaft; a drive unit provided on the rotation member and configured to rotationally drive the drive wheel; and a lock mechanism configured to permit rotation of the rotation member with respect to the base portion, and meanwhile, to deter the rotation of the rotation member with respect to the base portion.