KR20210071647A - Flywheel - Google Patents

Abstract

The present invention relates to a flywheel. The flywheel according to an embodiment may comprise: a rotation shaft connected to a wheel rotating shaft of a moving device and rotating together with a wheel; a rotation unit including a disk having a center connected to the rotation shaft and being constrained in one direction with respect to the rotation shaft to rotate, and a plurality of magnets disposed along the circumferential direction on one surface of the disk; and a power generation unit disposed between the wheel and the rotation unit and generating an electric power through electromagnetic induction according to rotation of the rotation unit. The flywheel improves stability of the moving device through a gyroscope effect, thereby being able to prevent the moving device from shaking.

Description

flywheel {FLYWHEEL}

The description below relates to the flywheel. More specifically, it includes a rotating shaft, a rotating unit that can rotate the rotating shaft as a rotating shaft, and a power generation unit that can supply electric power to the moving unit by generating electromagnetic induction by the rotation of the rotating unit to improve the stability of the moving device. It relates to a flywheel capable of preventing safety accidents due to movement and supplying electric power to a mobile device.

If the moving device is shaken while the wheeled mobile device is transporting people or objects, the person or object being transported may be separated from the mobile device, resulting in property damage or personal injury. There is a need for a device that can induce a stable posture by preventing the shaking of the mobile device. The flywheel refers to a device intended to make the rotation of a device even. More specifically, the flywheel can be seen as an inertia disk, and it refers to a device that makes the rotation even for an uneven and intermittent device or a device that can suddenly stop rotating and prevents the sudden stop of rotation.

In particular, in the case of a two-wheeled moving device, if it is shaken while moving in the moving direction, a safety accident may occur. In addition, in the case of a mobile device operated by using electric power as power, a separate power supply device may be installed in consideration of energy efficiency. For example, in the case of a bicycle, if the bicycle is shaken by the user of the bicycle, the user may be separated from the bicycle and personal injury may occur. And in the case of electric bicycles or motorcycles that use electric power as power, it can be advantageous in terms of energy efficiency by saving the used electric power and supplying more electric power. Therefore, there is a need for a flywheel capable of preventing the shaking of the two-wheeled moving device and supplying separate power to the moving device.

In this regard, Korean Patent Application Laid-Open No. 10-2019-0121520 discloses an auxiliary power generation system using a flywheel auxiliary generator.

The above-mentioned background art is possessed or acquired by the inventor in the process of derivation of the present invention, and cannot necessarily be said to be a known art disclosed to the general public before the filing of the present invention.

The purpose of the flywheel according to the embodiment is a rotating shaft connected to the wheel rotating shaft of the moving device, a rotating shaft connected to the rotating shaft and rotated by being constrained in one direction with respect to the rotating shaft and rotating part comprising a plurality of magnets disposed along the circumferential direction on one surface And to provide a power generation unit capable of producing electric power through electromagnetic induction according to the rotation of the rotating unit.

In the flywheel connected to the wheel rotation shaft of the mobile device, the flywheel according to the embodiment is connected to the wheel rotation shaft of the mobile device and rotates with the wheel, the center is connected to the rotation shaft and relative to the rotation shaft It is disposed between the wheel and the rotating unit and a rotating unit comprising a circular plate constrained in one direction and rotating, and a plurality of magnets disposed along the circumferential direction on one surface of the circular plate, and produces electric power through electromagnetic induction according to the rotation of the rotating part. It may include a power generation unit.

The rotating unit may further include a first bearing connecting the disk and the rotation shaft, and the first bearing may rotate the disk by constraining only the forward rotation of the rotation shaft.

The power generation unit is connected to a fixing unit including a mounting groove into which the rotating shaft is inserted, a second bearing provided in the mounting groove and freely rotating the rotating shaft with respect to the fixed unit, and the fixing unit, and the rotation of the rotating unit. It may include a support part on which an electric wire through which an induced current flows is wound.

The support portion may be formed in a ring shape with a central axis coincident with the central axis of the disk, the electric wire is wound on a surface, and one surface may face one surface of the disk.

A radius of a circle formed by the electric wire wound on the support may be the same as a radius of a circle formed by a plurality of magnets disposed on the disk.

According to the flywheel according to the embodiment, the flywheel is a rotation shaft connected to the wheel rotation shaft of the moving device, a plurality of magnets connected to the rotation shaft and constrained in one direction with respect to the rotation shaft to rotate and arranged along the circumferential direction on one surface By providing the rotating part including, the flywheel can prevent the shaking of the moving device by improving the stability of the moving device through the gyroscope effect, and consequently, it is possible to prevent a safety accident caused by the moving device.

In addition, the flywheel provides a power generation unit capable of producing electric power through electromagnetic induction according to the rotation of the rotating unit, so that the flywheel can supply power to the moving device to the moving device.

1 is a view showing a state of use of a flywheel according to an embodiment.
2 is a perspective view of a flywheel according to an embodiment;
3 is a perspective view of a rotating part according to an embodiment.
4 is a perspective view of a power generation unit according to an embodiment.
The following drawings attached to this specification illustrate a preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in those drawings It should not be construed as being limited.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in the description of the embodiment, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, a description described in one embodiment may be applied to another embodiment, and a detailed description in the overlapping range will be omitted.

1 is a view showing a state of use of a flywheel according to an embodiment.

Referring to FIG. 1 , the flywheel 1 may be connected to a wheel rotation shaft of a moving device. The moving device may include, for example, a moving device driven by two wheels. The mobile device may include not only a general bicycle, but also electric mobility powered by electricity. That is, the mobile device may include a motorcycle, an electric bicycle, and the like.

2 is a perspective view of a flywheel according to an embodiment;

Referring to FIG. 2 , the flywheel 1 may balance the moving device. For example, the flywheel 1 may help the moving device to maintain its posture without shaking or falling due to an external physical force due to the gyroscope effect. Therefore, the flywheel 1 can prevent a safety accident caused by a phenomenon in which the moving device loses its balance. The flywheel 1 may include a rotating shaft 10 , a rotating unit 11 , and a power generation unit 12 .

The rotating shaft 10 is connected to the wheel rotating shaft of the mobile device and can rotate together with the wheel. In other words, the rotating shaft 10 may rotate in the same direction as the wheel by using the rotating shaft of the wheel of the moving device as the rotating shaft. Accordingly, the rotating shaft 10 may transmit a rotational force generated while the wheel rotates to the rotating unit 11 .

3 is a perspective view of a rotating part according to an embodiment.

Referring to FIG. 3 , the rotating part 11 may have a center connected to the rotating shaft 10 . Therefore, by the rotation of the rotating shaft 10, the rotating part 11 is constrained to rotate in only one direction and can increase the moment of inertia with respect to the rotation of the wheel. The rotating part 11 may include a disk 110 , a plurality of magnets 111 , and a first bearing 112 .

The disk 110 has a center connected to the rotation shaft 10 and can rotate while being constrained in one direction with respect to the rotation shaft 10 . For example, assuming that the wheel rotates clockwise with respect to the forward direction of a wheeled bicycle, the disk 110 receives the rotational force from the rotating shaft 10 with respect to the clockwise rotation of the wheel and is the same as the wheel. It can be rotated clockwise. When the bicycle stops while moving in the forward direction, the disk 110 may maintain rotation in the clockwise direction. The disk 110 may be kept rotating in a clockwise direction and then gradually stop rotating due to frictional force. Therefore, even if the bicycle loses its balance and shakes, the flywheel 1 can maintain the balance of the bicycle according to the gyroscope effect of the disk.

The disk 110 may include a circular shape. The disk 110 may be connected to the wheel by the rotating shaft 10 . The disk 110 may include a material having a mass higher than that of the power generation unit 12 . Therefore, by connecting the disk 110 to the rotation shaft of the wheel, a material having a high mass can increase the moment of inertia with respect to the rotation of the wheel and the disk 110 . As the moment of inertia increases, the rotation of the disk 110 may be further maintained.

The plurality of magnets 111 may be disposed along the circumferential direction on one surface of the disk 110 . The plurality of magnets 111 may include strong permanent magnets. For example, the plurality of magnets 111 may include neodymium magnets. Neodymium magnets contain a hard material that can withstand external shocks. In addition, the neodymium magnet may contain a very strong magnetism compared to normal magnets. Therefore, the neodymium magnet can generate a strong induced current during the electromagnetic induction reaction.

The first bearing 112 connects the disk 110 and the rotation shaft 10 , and may rotate the disk 110 by constraining only the forward rotation of the rotation shaft 10 . When the rotary shaft 10 rotates by rotation of the wheel, the first bearing 112 connected to the rotation shaft 10 in turn also rotates, and the disk 110 connected to the bearing 112 can also rotate. . For example, the first bearing 112 may include a unidirectional bearing. The first bearing can rotate the disk 110 only in one direction in a state fixed to the rotation shaft 10 . That is, assuming that the rotation direction of the wheel is clockwise when the bicycle moves in the traveling direction, the disk 110 may rotate in the same clockwise direction when the wheel rotates in the clockwise direction. Even when the wheel stops rotating in the clockwise direction, the first bearing 112 may maintain the disk 110 to rotate in the clockwise direction. That is, the first bearing 112 may not rotate counterclockwise.

4 is a perspective view of a power generation unit according to an embodiment.

Referring to FIG. 4 , the power generation unit 12 is disposed between the wheel and the rotating unit 11 and may generate electric power through electromagnetic induction according to the rotation of the rotating unit 11 . The power generation unit 12 may supply the generated power to the mobile device. The mobile device may use the supplied power as power required for movement. The power generation unit 12 may include a fixing unit 120 , a second bearing 121 , and a support unit 122 .

The fixing part 120 may include a mounting groove 1200 into which the rotation shaft 10 is inserted. The rotation shaft 10 may be inserted into the mounting groove 120 . The fixing unit 120 may be connected to the frame of the mobile device. That is, although the mounting groove 1200 is fixed to the rotation shaft of the wheel, the fixing unit 120 may be connected to the frame of the moving device as well as the rotation shaft of the wheel. Therefore, the fixing unit 120 may be located on the outer shell of the wheel while being fixed to the frame regardless of the rotation of the wheel.

The second bearing 121 is provided in the mounting groove 1200 and may freely rotate the rotation shaft 10 with respect to the fixing part 120 . For example, the second bearing 121 may include a bidirectional bearing. Bidirectional bearings, unlike unidirectional bearings, can rotate freely in both clockwise and counterclockwise directions. The second bearing 121 may connect the fixed part 120 and the rotating shaft 10 to each other. Accordingly, when the wheel rotates in the fixed state of the fixing unit 120 , the rotating shaft 10 may freely rotate in the same direction according to the rotation direction of the wheel. That is, the second bearing 121 can create an environment in which the fixing part 120 is fixed to the frame of the moving device, but the rotating shaft 10 can rotate in all directions.

The support 122 may be formed in a ring shape in which the central axis coincides with the central axis of the disk 110 . Therefore, the central axis of the support 122 and the central axis of the disk 110 and the longitudinal direction of the rotation shaft 10 may coincide.

An electric wire is wound on the surface of the support 122 , and one surface of the support 122 may face one surface of the disk 110 . For example, in a state in which the wire is wound around the ring shape of the support part 122 , the fixing part 120 is connected to one surface of the ring, and the other surface of the ring may face one surface of the disk 110 . The support 112 and the disk 110 may be parallel to each other with respect to the opposite surfaces. In addition, the surface of the support 112 and the disk 110 facing each other may have the same cross-sectional area. That is, the surfaces facing each other of the support 112 and the disk 110 may be manufactured to have the same size. As a result, the radius of the circle formed by the electric wire wound around the support 122 may be the same as the radius of the circle formed by the plurality of magnets disposed on the disk 110 .

The supporting part 122 is connected to the fixed part 120 and a wire through which an induced current according to the rotation of the rotating part 11 flows may be wound. The wire may include, for example, an enameled wire. The enameled wire may include a structure in which glassy ceramics are thinly coated on a surface of a metal. The current induced by the rotating part 11 may be transmitted through the enamel wire without being discharged outside the enamel wire. The support part 122 may include a magnetically strong material. For example, the support 122 may include a magnetic iron core. The magnetic core may limit the range of the magnetic field by the plurality of magnets 111 to the inside of the magnetic core. Accordingly, the magnetic field strength inside the magnetic iron core is also changed according to the change in the magnetic field strength by the plurality of magnets 111 , and an induced current may be generated in the enamel wire wound around the magnetic iron core.

As a result, the plurality of magnets 111 arranged in the circumferential direction may generate electromagnetic induction in the power generation unit 12 . An induced current may be generated in the wire by electromagnetic induction of the plurality of magnets 111 , and the flywheel 1 may supply power to the mobile device using the generated induced current.

The flywheel 1 may further include a cover part 13 . The cover part 13 is located at an outer shell more than the rotation part 11 and the power generation part 12 with respect to the wheel, and it can prevent the phenomenon that the rotation part 11 and the power generation part 12 deviate from the rotation shaft 10 .

As described above, although the embodiments have been described with reference to the limited drawings, various modifications and variations are possible from the above description by those of ordinary skill in the art. For example, the described techniques are performed in an order different from the described method, and/or the described components of structures, devices, etc. are combined or combined in a different form than the described method, or other components or equivalents are used. Appropriate results can be achieved even if substituted or substituted by

1: flywheel
10: rotating shaft
11: Rotating part
12: power generation unit

Claims (5)

In the flywheel connected to the wheel rotation shaft of the moving device,
a rotating shaft connected to the wheel rotating shaft of the moving device and rotating together with the wheel;
a rotating part including a circular plate having a center connected to the rotation shaft and being constrained in one direction with respect to the rotation shaft to rotate, and a plurality of magnets disposed along a circumferential direction on one surface of the circular plate; and
a power generation unit disposed between the wheel and the rotating unit and generating electric power through electromagnetic induction according to the rotation of the rotating unit;
comprising, a flywheel. According to claim 1,
the rotating part
Further comprising a first bearing connecting the disk and the rotating shaft,
The first bearing is a flywheel for rotating the disk by constraining only the forward rotation of the rotation shaft. According to claim 1,
The power generation unit,
a fixing part including a mounting groove into which the rotating shaft is inserted;
a second bearing provided in the mounting groove and freely rotating the rotating shaft with respect to the fixing part; and
a support part connected to the fixed part and wound around an electric wire through which an induced current according to rotation of the rotating part flows;
comprising, a flywheel. 4. The method of claim 3,
The support portion is formed in a ring shape whose central axis coincides with the central axis of the disk, the electric wire is wound on the surface, and one surface faces one surface of the disk, the flywheel. 5. The method of claim 4,
The radius of the circle formed by the electric wire wound on the support is the same as the radius of the circle formed by the plurality of magnets disposed on the disk, flywheel.

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