KR-20260067310-A - Wheel device, vehicle equipped with the wheel device, and method controlling the wheel device

KR20260067310AKR 20260067310 AKR20260067310 AKR 20260067310AKR-20260067310-A

Abstract

A wheel device, a vehicle equipped with the wheel device, and a method for controlling the wheel device are disclosed. The wheel device comprises: a wheel body having spokes formed spaced apart at a plurality of predetermined angles and a through opening formed between adjacent spokes to allow air to pass through; a cover member covering the side of the wheel body to rotate about the wheel body around the rotation axis of the wheel body and having at least one hole area; and a power assembly connected between the wheel body and the cover member, configured such that when the rotational speed of the wheel body is greater than a predetermined threshold value, the cover member rotates about the wheel body around the rotation axis of the wheel body, thereby switching from an open state where the through opening of the wheel body overlaps with the hole area to a closed state where it does not overlap with the hole area.

Inventors

루오쓰양
윈레이
궈홍팽
김용채
린펑쉬에

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260512
Application Date: 20250925
Priority Date: 20241105

Claims (13)

In a wheel device, A wheel body having spokes formed spaced apart at a plurality of predetermined angles, and a through opening formed between adjacent spokes to allow air to pass through; A cover member that covers the side of the wheel body so as to be rotatable with respect to the wheel body around the rotation axis of the wheel body and has at least one hole area; and An electric assembly connected between a wheel body and a cover member, configured such that when the rotational speed of the wheel body is greater than a predetermined threshold value, the cover member rotates relative to the wheel body around the rotational axis of the wheel body, thereby switching the through opening of the wheel body from an open state where it overlaps with a hole region to a closed state where it does not overlap with a hole region; A wheel device including
In paragraph 1, The above electric assembly includes a ball and an elastic member, and The above ball is configured to contact the opposing surfaces of the wheel body and the cover member, respectively, and when the rotational speed of the wheel body is greater than a predetermined threshold value, move toward the radial outer side of the wheel body to rotate the cover member in a first direction relative to the wheel body around the rotational axis of the wheel body, thereby blocking the through opening; A wheel device configured such that the above elastic member connects the wheel body and the cover member, and when the cover member rotates in a first direction relative to the wheel body around the rotation axis of the wheel body, it is compressed, and when the rotation speed of the wheel body is less than or equal to a predetermined threshold value, the cover member is rotated in a second direction opposite to the first direction relative to the wheel body around the rotation axis of the wheel body so as to restore it to a state before compression, thereby opening a through opening.
In paragraph 2, A wheel body has a first rail groove formed on its surface facing the cover member, extending from the radially inside to the radially outside, and a second rail groove formed on its surface facing the wheel body; the projection of the second rail groove onto the wheel body intersects the first rail groove and has a predetermined angle, thereby forming a receiving space at the portion where the first rail groove and the second rail groove intersect each other; A wheel device in which the ball is placed within the receiving space, and when the rotational speed of the wheel body is greater than a predetermined threshold value, the ball moves toward the outer diameter end of the first rail groove, and the movement of the ball acts on the second rail groove so that the cover member rotates in a first direction relative to the wheel body around the rotational axis of the wheel body.
In paragraph 3, The above-mentioned first rail groove is formed to be extended in the radial direction of the wheel body.
In paragraph 3, A wheel device in which the first rail groove and the second rail groove are provided as at least one pair corresponding to each other.
In paragraph 3, A wheel device in which the range of the above-mentioned predetermined angle is 5° to 60°.
In paragraph 3, A first arc-shaped groove is formed on a wheel body and a second arc-shaped groove is formed on a cover member, and when the cover member covers the side of the wheel body, at least a portion of the first arc-shaped groove and the second arc-shaped groove overlap in the circumferential direction; A wheel device in which both ends of the above elastic member each contact the first cross-section of the first arc-shaped groove and the second cross-section of the second arc-shaped groove to connect the wheel body and the cover member.
In paragraph 5, When the rotational speed of the wheel body is less than or equal to a predetermined threshold value and the ball is maintained at the inner diameter end of the first rail groove, the elastic force of the elastic member satisfies the following conditions, and When the ball is located at the outer diameter end of the first rail groove but the rotational speed of the wheel body becomes less than or equal to a predetermined threshold value, the elastic force of the elastic member satisfies the following conditions, and Here, F is the elastic force of the elastic member, m is the mass of the ball, n is the number of balls, ω is the angular velocity at which the wheel body is currently rotating, and a is the angle between the projection of the second rail groove on the wheel body and the first rail groove. is the distance from the ball's current position to the center point of the wheel body, and A wheel device in which is the distance from the center point of the wheel body to the projection of the elastic member on the wheel body.
In paragraph 1, The above hole area is a wheel device provided to correspond one-to-one with a through opening.
A vehicle equipped with a wheel device according to any one of paragraphs 1 through 9.
In a method for controlling a wheel device, The wheel device comprises a wheel body, a cover member, and a power assembly, wherein the wheel body has spokes formed spaced apart at a plurality of predetermined angles, and a through opening is formed between adjacent spokes to allow air to pass through; The cover member covers the side of the wheel body so as to rotate relative to the wheel body around the rotational axis of the wheel body, and has at least one hole area; The electric assembly is connected between the wheel body and the cover member, and The above method If the rotational speed of the wheel body is greater than a predetermined threshold value, a step of using an electric assembly to rotate a cover member relative to the wheel body around the rotational axis of the wheel body, thereby switching from an open state where the through opening of the wheel body overlaps with the hole region to a closed state where it does not overlap with the hole region; A method for controlling a wheel device including
In Paragraph 11, The above-described electric assembly includes a ball and an elastic member, the ball contacts the opposing surfaces of the wheel body and the cover member, respectively, and the elastic member connects the wheel body and the cover member. The above method is, When the rotational speed of the wheel body is greater than a predetermined threshold value, the ball moves toward the radial outer side of the wheel body, thereby blocking the through opening by rotating the cover member in a first direction relative to the wheel body around the rotational axis of the wheel body and compressing the elastic member; and If the rotational speed of the wheel body is less than or equal to a predetermined threshold value, a step of opening a through opening by rotating a cover member in a second direction opposite to the first direction relative to the wheel body around the rotational axis of the wheel body to restore it to a state before compression; A method for controlling a wheel device that further includes
In Paragraph 11, When the rotational speed of the wheel body is less than or equal to a predetermined threshold value and the ball is maintained at the inner diameter end of the first rail groove, the elastic force of the elastic member satisfies the following conditions, and When the ball is located at the outer diameter end of the first rail groove but the rotational speed of the wheel body becomes less than or equal to a predetermined threshold value, the elastic force of the elastic member satisfies the following conditions, and Here, F is the elastic force of the elastic member, m is the mass of the ball, n is the number of balls, ω is the angular velocity at which the wheel body is currently rotating, and a is the angle between the projection of the second rail groove on the wheel body and the first rail groove. is the distance from the ball's current position to the center point of the wheel body, and A method for controlling a wheel device, which is the distance from the center point of the wheel body to the projection of an elastic member on the wheel body.

Description

Wheel device, vehicle equipped with the wheel device, and method controlling the wheel device The present invention relates to the field of wheel devices, and more specifically, to a wheel device, a vehicle equipped with said wheel device, and a method for controlling said wheel device. Since air resistance is a critical factor affecting vehicle energy consumption, it must be minimized. The air resistance acting on a vehicle includes not only the upper resistance determined by the vehicle's exterior shape but also the lower resistance generated by the wheels. Therefore, the air resistance of the wheels must also be improved, and using wheel covers to block airflow between the spokes is a common means of reducing air resistance. Accordingly, most eco-friendly vehicles, such as electric vehicles (EVs), currently use wheel covers to reduce energy consumption. However, a vehicle's braking system can generate a large amount of heat during braking, and wheel covers with limited openings restrict ventilation conditions for the wheel braking system. This affects the heat dissipation performance of the brake discs, which can lead to accidents resulting in ineffective braking. That is, the aerodynamic performance of a vehicle wheel must minimize airflow between spokes, whereas a braking wheel must maximize airflow between spokes. Therefore, it is necessary to provide a wheel device in which airflow between spokes can be switched between an open state and a closed state, a vehicle equipped with such a wheel device, and a method for controlling such a wheel device. The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the drawings. For clarity, the same components in different drawings are indicated by the same reference numerals. It should be noted that the drawings are illustrative only and are not necessarily drawn in proportion. FIGS. 1a to 1d are schematic diagrams illustrating a wheel device according to an embodiment of the present invention in different situations. FIG. 2 is an exploded view of a wheel device according to an embodiment of the present invention. FIG. 3 is an operation flowchart when a wheel device according to an embodiment of the present invention is used in a vehicle. Figure 4 illustrates the relationship between vehicle speed and driving force in an exemplary manner. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the invention. As used herein, singular forms are intended to include plural forms as well, unless explicitly otherwise indicated in the context. It will also be understood that the terms “include” and/or “include,” as used herein, specify the presence of the mentioned features, integers, steps, operations, components and/or components, but do not exclude the presence or addition of one or more of other features, integers, steps, operations, components, components and/or groups thereof. As used herein, the term “and/or” includes any one or all combinations of the associated items listed. Additionally, it is understood that one or more of the methods or aspects thereof described below may be executed by at least one controller. The term “controller” may refer to a hardware device comprising memory and a processor. The memory is configured to store program instructions, and the processor is specifically programmed to execute program instructions to perform one or more processes described in more detail below. The controller may control the operation of units, modules, components, devices, or similar things as described herein. Furthermore, it is understood that the methods below may be executed by a device comprising a controller together with one or more other components, as recognized by those skilled in the art. Additionally, in an embodiment of the present invention, the controller may be implemented as a non-transient computer-readable recording medium comprising executable program instructions executed by a processor. Examples of computer-readable recording media include, but are not limited to, ROM, RAM, Compact Disc (CD) ROM, magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices. The computer-readable recording medium may also be distributed across a computer network so that program instructions can be stored and executed in a distributed manner, such as, for example, a telematics server or a Controller Area Network (CAN). FIGS. 1a to 1d are schematic diagrams of a wheel device according to an embodiment of the present invention in different situations. FIG. 2 is an exploded view of a wheel device according to an embodiment of the present invention. Referring to FIGS. 1a t