Driving wheel and mobility vehicle including same

Patent metadata

Field	Value
Publication number	US-2022168161-A1
Application number	US-202117387759-A
Country	US
Kind code	A1
Filing date	Jul 28, 2021
Priority date	Nov 27, 2020
Publication date	Jun 2, 2022
Grant date	—

Abstract

A driving wheel includes: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each protruding outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor to rotate the first disc; and a second motor to rotate the second disc

First claim

What is claimed is:

1 . A driving wheel comprising:
a rotary shaft; at least one first disc provided to be rotatable with respect to the rotary shaft; at least one second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each configured to protrude outward and each including:
a first side rotatably coupled to the at least one first disc, and
a second side rotatably coupled to the at least one second disc:
a first motor configured to rotate the at least one first disc; and a second motor configured to rotate the at least one second disc.

2 . The driving wheel of claim 1 , wherein:
the first sides of the plurality of spokes are arranged at equal intervals around the rotary shaft, and the second sides of the plurality of spokes are arranged at equal intervals around of the rotary shaft.

3 . The driving wheel of claim 2 , wherein the second sides of the plurality of spokes are radially inwardly arranged with respect to the first sides of the plurality of spokes.

4 . The driving wheel of claim 1 , wherein the at least one first disc comprises:
a first body coupled to the rotary shaft; and first protruding parts protruding outward from the first body and each having one side coupled to the first side of each spoke of the plurality of spokes.

5 . The driving wheel of claim 4 , wherein the at least one second disc comprises:
a second body coupled to the rotary shaft; and second protruding parts protruding outward from the second body and each having one side coupled to the second side of each spoke of the plurality of spokes.

6 . The driving wheel of claim 5 , wherein the at least one first disc comprises two first discs, and the two first discs are spaced apart from each other in a width direction.

7 . The driving wheel of claim 6 , wherein the at least one second disc is provided in an internal space formed between the two first discs in the width direction.

8 . The driving wheel of claim 5 , wherein the plurality of spokes each comprises:
a first spoke extending outward from the first side; and a second spoke extending from the first side to the second side.

9 . The driving wheel of claim 8 , wherein the first spoke and the second spoke are provided in a straight line.

10 . The driving wheel of claim 8 , wherein a distance from the rotary shaft to the first side is longer than a distance from the rotary shaft to the second side.

11 . The driving wheel of claim 5 , wherein the second body is fixedly coupled to the rotary shaft so as not to move relative to the rotary shaft, and the second motor is connected directly to the rotary shaft.

12 . The driving wheel of claim 11 , wherein the second body is formed integrally with the rotary shaft.

13 . The driving wheel of claim 4 , wherein an external gear is provided on an outer surface of the first body provided in a radial direction, and the first motor is configured to engage with the external gear.

14 . The driving wheel of claim 1 , further comprising:
a support part provided on an outer end portion of a corresponding spoke of the plurality of spokes and configured to protrude in a circumferential direction of the driving wheel.

15 . The driving wheel of claim 14 , wherein the support part is provided to be rotatable with respect to the corresponding spoke.

16 . The driving wheel of claim 15 , further comprising:
a first elastic part including: a first side being in close contact with the support part and a second side being in close contact with the corresponding spoke.

17 . The driving wheel of claim 8 , further comprising:
an elastic part provided in the first spoke of a corresponding spoke among the plurality of spokes and configured to extend from an outer end portion of the first spoke of the corresponding spoke to the first side.

18 . The driving wheel of claim 11 , further comprising:
a bearing provided between the rotary shaft and the first body.

19 . A mobility vehicle comprising:
at least one driving wheel, wherein the at least one driving wheel comprises: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each configured to protrude outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor configured to rotate the first disc; and a second motor configured to rotate the second disc.

20 . The mobility vehicle of claim 19 , wherein the mobility vehicle is a wheelchair.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Ko Hun Keon
• Park Hyun Kyoo
• An Jea Kyoo

Classifications

• A61G5/04

  motor-driven (A61G5/06 takes precedence; motor-operated rests A61G5/12; for vehicles with handlebars, equipped with three or more wheels B62K5/003, B62K5/023) · CPC title

• A61G5/06

  with obstacle mounting facilities, e.g. for climbing stairs, {kerbs or steps} · CPC title

• B60B23/02

  by split or other expansible ring devices · CPC title

• B60B19/00 Primary

  Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group · CPC title

• B60B2900/551

  Handling of obstacles or difficult terrains · CPC title