Patent ID: 11865890
Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. A device comprising:
a main body; and
at least one rocking arm structure each comprising:
an arm body;
a first wheel assembly connected to the arm body;
a second wheel assembly connected to the arm body; and
a shaft assembly disposed between the first wheel assembly and the second wheel assembly, the at least one rocking arm structure connected to the main body through the shaft assembly;

wherein the arm body is configured to rotate relative to the main body around the shaft assembly, and to drive the first wheel assembly and the second wheel assembly to revolve in a same direction around the shaft assembly; the first and the second wheel assemblies are both steering wheel assemblies or the first and the second wheel assemblies are both directional wheel assemblies;
wherein the shaft assembly comprises a connecting seat, a shaft, two bearings, and a first fastener, the connecting seat defines a through hole, the two bearings are disposed in the through hole, the shaft is rotatably disposed in the two bearings and connected to the arm body, the first fastener is connected to the shaft;
wherein the shaft comprises a first shaft portion and a second shaft portion connected to the first shaft portion, an end face of the first shaft portion facing the second shaft portion is abutted against one of the two bearings, the second shaft portion comprises a fastening portion extending out of the two bearings, the fastening portion is connected to the first fastener;
wherein a flange protrudes from an inner wall of the through hole, and the flange is disposed between and abuts against the two bearings.