US-20260124902-A1 - WHEEL MODULE AND DRIVE DEVICE INCLUDING SAME

US20260124902A1US 20260124902 A1US20260124902 A1US 20260124902A1US-20260124902-A1

Abstract

An embodiment provides a wheel module comprising: a body; a connection part which is rotatably coupled to the body, the connection part being rotatable in a first direction; a wheel body which is rotatably coupled to the connection part, the wheel body being rotatable in a second direction; and a wheel part which is arranged to be spaced apart from the wheel body and has an auxiliary tread portion having selectively adjustable internal pressure.

Inventors

Hee Sung Jang
Seung Hwan RHEE
A Reum Kim

Assignees

HANKOOK TIRE & TECHNOLOGY CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20230927
Priority Date: 20220929

Claims (18)

1 . A wheel module comprising: a body; a connection part rotatably coupled to the body in a first direction; and a wheel part including a wheel body rotatably coupled to the connection part in a second direction, and an auxiliary grounding part spaced apart from the wheel body, wherein the internal pressure of the auxiliary grounding part is selectively adjustable.
2 . The wheel module according to claim 1 , wherein the body includes a through-hole penetrating both ends in the vertical direction, and wherein the connection part is arranged inside the through-hole and is rotatably arranged in the inner circumferential direction of the through-hole.
3 . The wheel module according to claim 2 , wherein the connection part is rotatably arranged inside the through-hole in a third direction centered on a rotation shaft.
4 . The wheel module according to claim 2 , wherein the connection part comprises a connection body, which includes a pair of curved parts curved to correspond to the inner surface shape of the through-hole and facing each other, and a pair of straight parts arranged between the pair of curved parts and extending parallel to each other.
5 . The wheel module according to claim 1 , wherein a pair of auxiliary grounding parts are provided, and wherein the pair of auxiliary grounding parts are arranged on both sides of the wheel body to face each other.
6 . The wheel module according to claim 3 , further comprising: a first drive part arranged in the body and generating a driving force to rotate the connection part in the first direction; a second drive part arranged inside the wheel body and generating a driving force to rotate the wheel part in the second direction; and a third drive part arranged in the body and generating a driving force to rotate the connection part in the third direction.
7 . The wheel module according to claim 1 , further comprising: a sensor unit for measuring a rotation angle of the wheel part and a rotation angle of the connection part.
8 . The wheel module according to claim 1 , further comprising: a shock absorption part arranged at the upper portion of the body to absorb external shocks.
9 . A drive device comprising: a wheel module; and a driving body to which at least one wheel module is coupled at a lower portion, wherein the wheel module comprises: a body; a connection part rotatably coupled to the body in a first direction; and a wheel part including a wheel body rotatably coupled to the connection part in a second direction, and an auxiliary grounding part spaced apart from the wheel body, wherein the internal pressure of the auxiliary grounding part is selectively adjustable.
10 . The drive device according to claim 9 , wherein the driving body includes an installation groove recessed inward from the lower surface thereof; and wherein the wheel module is coupled inside the installation groove, and a portion of the wheel part protrudes outside the installation groove.
11 . The drive device according to claim 10 , wherein the wheel module is detachably coupled to the installation groove, and wherein when the wheel module is coupled to the driving body, an arrangement pattern of multiple wheel modules is adjustable.
12 . The drive device according to claim 9 , wherein the body includes a through-hole penetrating both ends in the vertical direction, and wherein the connection part is arranged inside the through-hole and is rotatably arranged in the inner circumferential direction of the through-hole.
13 . The drive device according to claim 12 , wherein the connection part is rotatably arranged inside the through-hole in a third direction centered on a rotation shaft.
14 . The drive device according to claim 12 , wherein the connection part comprises a connection body, which includes a pair of curved parts curved to correspond to the inner surface shape of the through-hole and facing each other, and a pair of straight parts arranged between the pair of curved parts and extending parallel to each other.
15 . The drive device according to claim 9 , wherein a pair of auxiliary grounding parts are provided, and wherein the pair of auxiliary grounding parts is arranged on both sides of the wheel body to face each other.
16 . The drive device according to claim 13 , wherein the wheel module comprises: a first drive part arranged in the body and generating a driving force to rotate the connection part in the first direction; a second drive part arranged inside the wheel body and generating a driving force to rotate the wheel part in the second direction; and a third drive part disposed in the body and generating a driving force to rotate the connection part in the third direction.
17 . The drive device according to claim 9 , wherein the wheel module comprises a sensor unit for measuring the rotation angle of the wheel part and the rotation angle of the connection part.
18 . The drive device according to claim 9 , wherein the wheel module comprises a shock absorption part arranged at the upper portion of the body to absorb external shocks.

Description

TECHNICAL FIELD The present invention relates to a device and, more specifically, to a wheel module and a drive device including the same. BACKGROUND ART Globally, the development of smart cities is planned to address environmental pollution and residential environment problems caused by overpopulation and rapid industrialization. The smart cities refer to small-scale urban environments that aim to enhance the quality of life by establishing an urban ecosystem and advanced infrastructure in environments where human survival was previously difficult, such as tropical rainforests, deserts, or marine areas, addressing the urban housing problem, the environmental problem, and the traffic problem. The smart cities need an efficient driving system capable of free rotation and movement within a confined urban environment of approximately 2 km. However, conventional circular wheels used in a vehicle require a turning radius of several meters to rotate the vehicle or change lanes, and has another problem in that tires are prone to rapid wear due to continuous friction during rotation and turning. Moreover, drive systems or wheels installed in each vehicle cannot be used in various environments since being fixed in specific sizes according to vehicle specifications. Therefore, in order to overcome the above problems, there is a need for a drive system that can be universally applied in confined spaces and various usage environments. DISCLOSURE Technical Problem Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the related art, and it is an object of the present invention to provide a wheel module and a drive device including the same, which can rotate with a small turning radius through multi-axis rotational motion, allow rapid and easy emergency braking in urgent situations, and be applied to various usage environments (or platforms) through a detachable coupling structure. Technical objects to be achieved by the present invention are not limited to the above-described objects and other technical objects that have not been described will be evidently understood by those skilled in the art from the following description. Technical Solution To accomplish the above-mentioned objects, according to the present invention, there is provided a wheel module including: a body; a connection part rotatably coupled to the body in a first direction; and a wheel part including a wheel body rotatably coupled to the connection part in a second direction, and an auxiliary grounding part spaced apart from the wheel body, wherein the internal pressure of the auxiliary grounding part is selectively adjustable. In an embodiment of the present invention, the body includes a through-hole penetrating both ends in the vertical direction, and the connection part is arranged inside the through-hole and is rotatably arranged in the inner circumferential direction of the through-hole. In an embodiment of the present invention, the connection part is rotatably arranged inside the through-hole in a third direction centered on a rotation shaft. In an embodiment of the present invention, the connection part comprises a connection body, which includes a pair of curved parts curved to correspond to the inner surface shape of the through-hole and facing each other, and a pair of straight parts arranged between the pair of curved parts and extending parallel to each other. In an embodiment of the present invention, a pair of auxiliary grounding parts are provided, and are arranged on both sides of the wheel body to face each other. In an embodiment of the present invention, the wheel module further includes: a first drive part arranged in the body and generating a driving force to rotate the connection part in the first direction; a second drive part arranged inside the wheel body and generating a driving force to rotate the wheel part in the second direction; and a third drive part arranged in the body and generating a driving force to rotate the connection part in the third direction. In an embodiment of the present invention, the wheel module further includes a sensor unit for measuring a rotation angle of the wheel part and a rotation angle of the connection part. In an embodiment of the present invention, the wheel module further includes a shock absorption part arranged at the upper portion of the body to absorb external shocks. In another aspect of the present invention, there is provided a drive device including: a wheel module; and a driving body to which at least one wheel module is coupled at a lower portion. The wheel module includes: a body; a connection part rotatably coupled to the body in a first direction; and a wheel part including a wheel body rotatably coupled to the connection part in a second direction, and an auxiliary grounding part spaced apart from the wheel body, wherein the internal pressure of the auxiliary grounding part is selectively adjustable. In an embodiment of the p