US 11,865,890 B2
Rocking arm structure providing additional wheel support and device having the same
Sheng-Li Yen, New Taipei (TW); Chih-Cheng Lee, New Taipei (TW); Chen-Ting Kao, New Taipei (TW); Yu-Cheng Zhang, New Taipei (TW); Chiung-Hsiang Wu, New Taipei (TW); Chang-Ju Hsieh, New Taipei (TW); Chen Chao, New Taipei (TW); Yu-Sheng Chang, New Taipei (TW); and Chi-Cheng Wen, New Taipei (TW)
Assigned to Futaijing Precision Electronics (Yantai) Co., Ltd., Yantai (CN); and HON HAI PRECISION INDUSTRY CO., LTD., New Taipei (TW)
Filed by Futaijing Precision Electronics (Yantai) Co., Ltd., Yantai (CN); and HON HAI PRECISION INDUSTRY CO., LTD., New Taipei (TW)
Filed on Dec. 19, 2022, as Appl. No. 18/084,101.
Claims priority of application No. 202123369842.9 (CN), filed on Dec. 29, 2021.
Prior Publication US 2023/0202254 A1, Jun. 29, 2023
Int. Cl. B60G 21/05 (2006.01); B60G 7/00 (2006.01)
CPC B60G 21/05 (2013.01) [B60G 7/001 (2013.01); B60G 7/006 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A rocking arm structure 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;
wherein the arm body is configured to rotate relative to a 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.