Rocking arm structure providing additional wheel support and device having the same

Patent metadata

Field	Value
Publication number	US-11865890-B2
Application number	US-202218084101-A
Country	US
Kind code	B2
Filing date	Dec 19, 2022
Priority date	Dec 29, 2021
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A rocking arm structure includes 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 arm body can rotate relative to the main body around the shaft assembly, and drive the first wheel assembly and the second wheel assembly to revolve in a same direction around the shaft assembly. The first wheel assembly and the second wheel assembly are both steering wheel assemblies or both directional wheel assemblies.

First claim

What is claimed is:

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.

2. The rocking arm structure according to claim 1 , wherein the first wheel assembly and the second wheel assembly are both steering wheel assemblies.

3. The rocking arm structure according to claim 1 , wherein the shaft assembly further comprises a gasket disposed between the first fastener and one of the two bearings adjacent to the first fastener.

4. The rocking arm structure according to claim 1 , wherein the arm body comprises a first arm portion, a second arm portion, and a third arm portion, the first, the second, and the third arm portions are successively connected to each other, the second arm portion comprises a first end face, the first end face is recessed to form a receiving space.

5. The rocking arm structure according to claim 1 , wherein a distance between the first wheel assembly and the shaft assembly is equal to a distance between the second wheel assembly and the shaft assembly.

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.

7. The device according to claim 6 , wherein the main body comprises a front end and a rear end opposite to the front end, the at least one rocking arm structure comprises two rocking arm structures, the two rocking arm structures are mounted to the front end and the rear end.

8. The device according to claim 6 , wherein the first wheel assembly and the second wheel assembly are both steering wheel assemblies.

9. The device according to claim 6 , wherein the shaft assembly further comprises a gasket disposed between the first fastener and one of the two bearings adjacent to the first fastener.

10. The device according to claim 6 , wherein the arm body comprises a first arm portion, a second arm portion, and a third arm portion successively connected, the second arm portion comprises a first end face, the first end face is recessed to form a receiving space.

11. The device according to claim 6 , wherein a distance between the first wheel assembly and the shaft assembly is equal to a distance between the second wheel assembly and the shaft assembly.

Assignees

• Futaijing Prec Electronics Yantai Co Ltd
• Hon Hai Prec Ind Co Ltd

Inventors

• Yen Sheng-Li
• Lee Chih-Cheng
• Kao Chen-Ting
• Zhang yu-cheng
• Wu Chiung-Hsiang
• Hsieh Chang-Ju
• Chao Chen
• Chang Yu-Sheng
• Wen Chi-Cheng

Classifications

• B60G21/05 Primary

  between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected · CPC title

• B60G7/001

  Suspension arms, e.g. constructional features (B60G7/006 takes precedence) · CPC title

• B60G7/006

  Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor (B62D7/146 takes precedence) · CPC title

• B66F9/063 Primary

  Automatically guided · CPC title

• B66F9/07586

  Suspension or mounting of wheels on chassis · CPC title