(19)
(11) EP 4 570 335 A1

(12) EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(43) Date of publication:
18.06.2025 Bulletin 2025/25

(21) Application number: 23852756.8

(22) Date of filing: 07.07.2023
(51) International Patent Classification (IPC): 
A63C 17/01(2006.01)
(52) Cooperative Patent Classification (CPC):
A63C 17/01
(86) International application number:
PCT/KR2023/009699
(87) International publication number:
WO 2024/034871 (15.02.2024 Gazette 2024/07)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 08.08.2022 KR 20220098497

(71) Applicant: Choi, Jae Hyun
Wonju-si, Gangwon-do 26400 (KR)

(72) Inventor:
  • Choi, Jae Hyun
    Wonju-si, Gangwon-do 26400 (KR)

(74) Representative: Cabinet Chaillot 
16/20, avenue de l'Agent Sarre B.P. 74
92703 Colombes Cedex
92703 Colombes Cedex (FR)

   


(54) BOARD AND WHEEL ASSEMBLY FOR BOARD


(57) The present disclosure relates to a board easily capable of changing direction and a wheel assembly for a board. A board according to an embodiment of the present disclosure comprises: a deck formed to extend in a first direction; a pair of first wheel assemblies which are respectively formed on both sides of the deck in the first direction; and at least one second wheel assembly which is arranged between the pair of first wheel assemblies and installed on the deck. Here, the pair of first wheel assemblies each comprise a first wheel attachment portion which is fixed to the deck, and a pair of first wheels which are installed to be spaced apart from each other on the first wheel attachment portion in a second direction that is the width direction of the deck and perpendicular to the first direction. Also, at least one second wheel assembly comprises a second wheel attachment portion fixed to the deck, and a pair of second wheels which are attached on the second wheel attachment portion to be rotatable with respect to the second wheel attachment portion.




Description

[Technical Field]



[0001] The present disclosure relates to a board and a wheel assembly for a board, and more specifically, to a board and a wheel assembly for a board with which a direction change can be easily performed.

[Background Art]



[0002] A board is a mobile device in which wheels are mounted on a deck having a long board shape and may be classified as a skateboard, a longboard, a cruiser board, or the like according to a size and a shape of the deck.

[0003] Although boards are not as popularly used as snowboards, there is a considerable overseas market for boards, and in Korea, interest in boards, mainly longboards, is increasing and the number of people who enjoy boards is also greatly increasing.

[0004] Meanwhile, since a board is formed such that a wheel mounted on a deck moves only in a straight direction, the board has some limitations in implementing various movements. For example, since a direction change can be easily performed on a snowboard, a snowboard freely rotates in various directions, but in general, it is difficult to perform such movements on a board.

[0005] In order to overcome such limitations, various technological development efforts are continuing. As an example, Korean Patent Publication No. 2005-0028519 (Patent Document 1) discloses a skateboard on which free steering using a roller type wheel is possible, and U.S. Patent Publication No. 10,661,151 (Patent Document 2) discloses a board including a central wheel for free steering.

[0006] However, according to Patent Document 1, it is not easy to perform an actually free natural rotational movement, and according to Patent Document 2, the structure of the board is complex, and there is still a problem that it is difficult for a user to stably keep his or her balance and stand when the user stands upright on a deck in a stopped state.

[Technical Problem]



[0007] The present disclosure is directed to solving the above-described conventional problems and providing a board and a wheel assembly for a board with which a direction change can be easily performed.

[0008] In addition, the present disclosure is also directed to providing a board and a wheel assembly for a board that allow stable posture to be maintained when stopped.

[Technical Solution]



[0009] One aspect of the present disclosure provides a board including a deck extending in a first direction, a pair of first wheel assemblies installed on both sides of the deck in the first direction, and at least one second wheel assembly disposed between the pair of first wheel assemblies and installed on the deck. In this case, each of the pair of first wheel assemblies includes a first wheel mount fixed to the deck and a pair of first wheels installed on the first wheel mount to be spaced apart from each other in a second direction which is a width direction of the deck and is perpendicular to the first direction. In addition, the at least one second wheel assembly includes a second wheel mount fixed to the deck and a pair of second wheels installed on the second wheel mount to be rotatable with respect to the second wheel mount.

[0010] According to one embodiment of the present disclosure, a distance between the second wheel and the deck may be greater than a distance between the first wheel and the deck. In this case, the distance is defined as a distance in a third direction perpendicular to the first direction and the second direction.

[0011] According to one embodiment of the present disclosure, the at least one second wheel assembly may further include a pair of wheel supports installed on the second wheel mount to be spaced apart from each other in the second direction, and each of the pair of second wheels may be installed on one of the pair of wheel supports to be rotatable with respect to the one of the pair of wheel supports.

[0012] According to one embodiment of the present disclosure, the at least one second wheel assembly may include a pair of wheel connectors installed to be rotatable about an axis in a third direction perpendicular to the first direction and the second direction with respect to the second wheel mount, and each of the pair of second wheels may be fixedly installed on one of the pair of wheel connectors.

[0013] According to one embodiment of the present disclosure, a concave portion may be formed in a region of the second wheel mount on which the pair of second wheels are mounted, and an elastic member may be installed on one side of each of the pair of wheel connectors.

[0014] According to one embodiment of the present disclosure, the concave portion may be formed in at least one side of each of the second wheels in the first direction.

[0015] According to one embodiment of the present disclosure, the concave portion may be formed at both sides of each of the second wheels in the first direction.

[0016] According to one embodiment of the present disclosure, inclined surfaces may be formed on the concave portion to face both sides in the second direction.

[0017] According to one embodiment of the present disclosure, the elastic member may be installed to be disposed at a location corresponding to the concave portion in a state in which the pair of second wheels are aligned in the first direction.

[0018] According to one embodiment of the present disclosure, the pair of second wheels and the pair of wheel connectors may be configured to be rotated by an external force with respect to the second wheel mount, and when the external force is removed, the elastic member may move to the concave portion, and the pair of second wheels and the pair of wheel connectors may be aligned in the first direction.

[0019] According to one embodiment of the present disclosure, a binder for fixing a foot of a user may be mounted on the deck.

[0020] Another aspect of the present disclosure provides a wheel assembly for a board, the wheel assembly including a wheel mount fixedly formed on a deck of the board and branched off toward both sides and a pair of wheel supports mounted in regions branched off toward both sides of the wheel mount. In this case the pair of wheel supports are configured such that wheels are each rotatable with respect to the wheel support.

[0021] The wheel assembly for a board according to one embodiment of the present disclosure may further include a pair of wheel connectors installed to be rotatable about an axis in a direction perpendicular to a ground surface with respect to the wheel mount. In this case, each of the pair of wheels may be installed on one of the pair of wheel connectors, and a concave portion may be formed in a region of the wheel mount on which the pair of wheels are mounted.

[0022] According to one embodiment of the present disclosure, inclined surfaces facing both sides may be formed in the concave portion.

[0023] The wheel assembly for a board according to one embodiment of the present disclosure may further include a pair of wheel connectors installed to be rotatable about an axis in a direction perpendicular to a ground surface with respect to the wheel mount, In this case, each of the pair of wheels may be installed on one of the pair of wheel connectors, and an elastic member may be formed on one side of each of the wheel connectors.

[Advantageous Effects]



[0024] According to one embodiment of the present disclosure, as a wheel assembly additionally including a rotatable wheel is provided between a pair of wheel assemblies, a user can perform a simple and easy operation to change a direction and perform a free rotational movement. In addition, according to one embodiment of the present disclosure, a base of a snowboard can be effectively implemented when compared to a conventional board.

[0025] In addition, according to one embodiment of the present disclosure, in a state in which a board is stopped, since a pair of wheels of an additional wheel assembly provided between a pair of wheel assemblies are in contact with a ground surface to stably support the board, a user can keep a stable posture.

[Description of Drawings]



[0026] 

FIG. 1 is a plan view illustrating a board according to one embodiment of the present disclosure.

FIG. 2 is a front view illustrating the board according to one embodiment of the present disclosure.

FIG. 3 is a side view illustrating the board according to one embodiment of the present disclosure.

FIGS. 4 and 5 are enlarged views illustrating one end of the board according to one embodiment of the present disclosure.

FIG. 6 is an enlarged view illustrating a second wheel assembly of the board according to one embodiment of the present disclosure.

FIGS. 7 and 8 are views illustrating a rotating wheel of the second wheel assembly of the board according to one embodiment of the present disclosure.

FIG. 9 is an enlarged view illustrating one end of a board according to another embodiment of the present disclosure.

FIG. 10 is an enlarged view illustrating one end of a board according to still another embodiment of the present disclosure.


<Reference Numerals>



[0027] 

100: BOARD

110: DECK

120: FIRST WHEEL ASSEMBLY

121: FIRST WHEEL MOUNT

123: FIRST WHEEL

130: SECOND WHEEL ASSEMBLY

131, 231, 331: SECOND WHEEL MOUNT

133, 233: WHEEL SUPPORT

135, 235, 335: WHEEL CONNECTOR

137, 237, 337: SECOND WHEEL

139: ELASTIC MEMBER


[Modes of the Best Invention]



[0028] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings in order for those skilled in the art to easily perform the present disclosure.

[0029] Unless otherwise described, descriptions such as "comprising" and the like used in the present specification should be understood as open-ended terms having the possibility of including other embodiments. In addition, it should be understood that, although terms "first," "second," and the like may be used in the present specification to describe various components, these terms are only used to distinguish one component from another component, and these components are not limited by these terms.

[0030] In the present specification, when a first component is described as being located at or connected to one side of a second component, it should be understood that the first component is not limited to being located at or connected in direct contact to the one side of the second component, and may be located at or connected thereto with a third component interposed therebetween.

[0031] Parts irrelevant to the present disclosure are omitted in order to clearly describe the present disclosure, and components which are the same or correspond to each other in the accompanying drawings are indicated by the same reference symbol and description thereof may be omitted. However, even when a specific component is omitted in the following description, this does not mean that the component is not included in a corresponding embodiment.

[0032] In addition, since sizes, thicknesses, locations, and the like of components illustrated in the drawings are arbitrarily illustrated for the sake of convenience in the description, the present disclosure is not necessarily limited to the illustrated drawings. That is, it should be understood that specific shapes, structures, and features described in the specification may be changed from one embodiment in another embodiment without departing from the sprit and scope of the present disclosure, and locations or layouts of individual components may also be changed without departing from the sprit and scope of the present disclosure.

[0033] Accordingly, the following detailed description is not intended to limit the present disclosure, and the scope of the invention is defined by the appended claims and encompasses all equivalents that fall within the scope of the appended claims.

[0034] FIGS. 1 to 3 are plan, front, and side views illustrating a board according to one embodiment of the present disclosure.

[0035] Referring to FIGS. 1 to 3, a board 100 according to one embodiment of the present disclosure includes a deck 110, a first wheel assembly 120, and a second wheel assembly 130.

[0036] The deck 110 of the board 100 according to one embodiment of the present disclosure may be formed in a long extending board shape. In the present embodiment, although the deck 110 has a shape in which a width decreases toward both sides of the deck 110 in a longitudinal direction (first direction), the present disclosure is not limited thereto, and the shape of the deck 110 may be variously changed.

[0037] The first wheel assembly 120 according to one embodiment of the present disclosure is mounted on a lower surface of the deck 110. According to one embodiment of the present disclosure, a pair of first wheel assemblies 120 may be mounted on both sides of the deck 110 in the longitudinal direction. The pair of first wheel assemblies 120 may be symmetrically disposed with respect to the longitudinal direction of the deck 110.

[0038] Referring to FIG. 2, each of the first wheel assemblies 120 includes a first wheel mount 121 and a first wheel 123.

[0039] According to one embodiment of the present disclosure, the first wheel mount 121 of the first wheel assembly 120 may be fixedly installed on the deck 110. The first wheel mount 121 may be disposed in a central portion of the of the deck 110 in a width direction (second direction) of the deck 110 and branched off toward both sides in the width direction.

[0040] According to one embodiment of the present disclosure, the first wheel 123 may be mounted on the first wheel mount 121. Specifically, the first wheel 123 may be mounted on each of a pair of shafts branched off toward both sides from the first wheel mount 121. That is, a pair of first wheels 123 may be disposed apart from each other in a width direction of the first wheel mount 121.

[0041] The second wheel assembly 130 according to one embodiment of the present disclosure is mounted on the lower surface of the deck 110 at a location between the pair of first wheel assemblies 120. According to one embodiment of the present disclosure, a pair of second wheel assemblies 130 may be mounted between the pair of first wheel assemblies 120 on both sides in the longitudinal direction of the deck 110. The pair of second wheel assemblies 130 may be symmetrically disposed with respect to the longitudinal direction of the deck 110.

[0042] In one embodiment of the present disclosure, it is illustrated that the pair of second wheel assemblies 130 are installed, but the present disclosure is not limited thereto, and at least one second wheel assembly 130 may also be installed. For example, one second wheel assembly 130 may be installed in the central portion of the of the deck 110.

[0043] FIGS. 4 and 5 are enlarged views illustrating one end of the board according to one embodiment of the present disclosure. FIG. 6 is an enlarged view illustrating the second wheel assembly of the board according to one embodiment of the present disclosure.

[0044] Referring to FIGS. 4 to 6, the second wheel assembly 130 according to one embodiment of the present disclosure may include a second wheel mount 131, a pair of wheel supports 133, a pair of wheel connectors 135, and a pair of second wheels 137.

[0045] According to one embodiment of the present disclosure, the second wheel mount 131 of the second wheel assembly 130 may be fixedly installed on the deck 110. The second wheel mount 131 may be installed in the central portion of the of the deck 110 in the width direction of the deck 110 and branched off toward both sides in the width direction.

[0046] According to one embodiment of the present disclosure, the pair of wheel supports 133 may be disposed on the second wheel mount 131. Specifically, the wheel supports 133 may be disposed in regions which are branched off toward both sides from the second wheel mount 131. That is, the pair of wheel supports 133 may be disposed apart from each other on one second wheel mount 131 in a width direction. Each of the wheel supports 133 may be formed of an elastic and flexible material, for example, a plastic.

[0047] According to one embodiment of the present disclosure, each of the second wheels 137 may be installed on one of the wheel supports 133. According to one embodiment of the present disclosure, the second wheel 137 may be installed on the wheel support 133 using the wheel connector 135.

[0048] According to one embodiment of the present disclosure, the second wheel 137 may be rotatably installed with respect to the wheel support 133. Specifically, the wheel connector 135 may be mounted to be rotatable about an axis in a third direction perpendicular to the first direction (longitudinal direction of the deck) and the second direction (width direction of the deck) with respect to the wheel support 133, the second wheel 137 may be fixedly mounted on the wheel connector 135, and as a result, the second wheel 137 may be installed to be rotatable about an axis in the third direction with respect to the wheel support 133.

[0049] In one embodiment, a screw through hole may be formed in the wheel connector 135, and a screw installed to pass through the wheel support 133 may be inserted into the screw through hole of the wheel connector 135 to be fastened thereto. In this case, in a manner in which a screw head is fastened to the screw in a state in which the screw is inserted into the screw through hole of the wheel connector 135, the wheel connector 135 may be installed to be rotatable about the screw as an axis with respect to the wheel support 133 without being separated therefrom.

[0050] As the second wheel 137 is installed to be rotatable with respect to the wheel support 133, a user may rotatably operate the second wheel 137 to control a moving direction of the board 100. The board 100 according to one embodiment of the present disclosure has a structure with which the user can easily control rotation of the second wheel 137 to easily and naturally change the moving direction.

[0051] According to one embodiment of the present disclosure, a concave portion may be formed in one side of each of the wheel supports 133. Referring to FIG. 6, the concave portion may be disposed in a rear side of the wheel support 133 in the longitudinal direction (first direction) of the deck 110. That is, the concave portion may be disposed in the rear side of each of the wheel supports 133 in a moving direction of the board.

[0052] According to one embodiment of the present disclosure, as illustrated in the drawings, the concave portion may be formed rearward from a central portion of the wheel support 133 to have a predetermined width and formed to have inclined surfaces facing both sides in the width direction (second direction) of the deck 110. In one embodiment, the inclined surfaces of the concave portion may be formed as curved surfaces. For example, the inclined surfaces of the concave portion may be formed as smoothly extending curved surfaces. In another example, inclined surfaces of a concave portion may be formed as curved surfaces each having a predetermined radius of curvature (that is, a cross-sectional surface thereof has an arc shape). In another example, inclined surfaces of a concave portion may be formed as surfaces each having a predetermined inclination angle (that is, a cross-sectional surface thereof has a triangular shape).

[0053] Unlike the drawings, the concave portion may be formed rearward from the substantially central portion of the wheel support 133 in a shape in which a width increases in a rearward direction. For example, the concave portion may be formed in substantially a fan shape.

[0054] According to one embodiment of the present disclosure, an elastic member 139 may be installed on one side of each of the wheel connectors 135. Referring to FIGS. 4 and 5, the elastic member 139 may be formed on a rear side of the wheel connector 135 in the longitudinal direction (first direction) of the deck 110. That is, the elastic member 139 may be formed on the rear side of the wheel connector 135 in a moving direction of the board.

[0055] According to one embodiment of the present disclosure, the elastic member 139 may be installed on the wheel connector 135 to face the wheel support 133 at a location corresponding to the concave portion of the wheel support 133. More specifically, the elastic member 139 may be installed to be disposed at the location corresponding to the concave portion of the wheel support 133 when the board 100 moves straight, that is, when the second wheel 137 is aligned in the longitudinal direction (first direction) of the deck 110.

[0056] A length of the elastic member 139 without an external force may be greater than a distance from an installation surface of the wheel connector 135 on which the elastic member 139 is installed to a lower surface of the wheel support 133, that is, a flat surface in which the concave portion is not formed. In addition, the length of the elastic member 139 without the external force may be smaller than or equal to a distance from the installation surface of the wheel connector 135 on which the elastic member 139 is installed to a surface in which the concave portion of the wheel support 133 is formed, more specifically, to a most deeply formed portion in the concave portion of the wheel support 133.

[0057] According to one embodiment of the present disclosure, the elastic member 139 may be formed as a coil spring, but the present disclosure is not limited thereto, and the elastic member 139 may be formed as another flexible type elastic member 139.

[0058] FIGS. 7 and 8 are views illustrating the rotating wheel of the second wheel assembly of the board according to one embodiment of the present disclosure. Specifically, FIG. 7 shows a layout of the second wheel assembly 130 when the board 100 moves straight, and FIG. 8 shows a layout of the second wheel assembly 130 when the board 100 rotates.

[0059] First, referring to FIG. 7, when the board 100 moves straight, the wheel connector 135 and the second wheel 137 of the second wheel assembly 130 are aligned in the longitudinal direction (first direction) of the deck 110. In this case, the elastic member 139 installed on the wheel connector 135 is disposed at a position corresponding to the concave portion of the wheel support 133. As described above, according to one embodiment of the present disclosure, since the length of the elastic member 139 is smaller than or equal to the length from the installation surface of the wheel connector 135 on which the elastic member 139 is installed to the most deeply formed portion of the concave portion of the wheel support 133, the elastic member 139 may be disposed in contact with or separated from the concave portion of the wheel support 133 without being compressed.

[0060] In the state illustrated in FIG. 7, when a user applies a load in one lateral direction with respect to a moving direction of the board 100 to perform a rotation operation, a force is applied to the second wheel assembly 130 at a side to which the load is applied, and the wheel connector 135 and the second wheel 137 of the second wheel assembly 130 are rotated.

[0061] Referring to FIG. 8, when the user performs an operation to rotate the board 100, the wheel connector 135 and the second wheel 137 of the second wheel assembly 130 may be rotated and aligned in the width direction (second direction) of the deck 110.

[0062] As the wheel connector 135 and the second wheel 137 of the second wheel assembly 130 are rotated, the elastic member 139 installed on the wheel connector 135 is compressed and departs from the concave portion of the wheel support 133. More specifically, the elastic member 139 may be compressed while moving along the inclined surface formed in the concave portion, and may finally depart from the concave portion and may be in contact with the lower surface of the wheel support 133, in which the concave portion is not formed, in a compressed state.

[0063] When the user completely performs the rotation operation in the state illustrated in FIG. 8, that is, the load in a lateral direction is removed, the board 100 rotates to a side on which the elastic member 139 returns to an original position under an elastic force. That is, the elastic member 139 moves toward the concave portion, so that the compression of the elastic member 139 is released, and finally restored to a state in which the elastic member 139 is not compressed. As the elastic member 139 returns, the wheel connector 135 and the second wheel 137 are aligned in a direction in which the board 100 moves straight, that is, in the state illustrated in FIG. 7.

[0064] As described above, according to one embodiment of the present disclosure, particularly due to a structure of the second wheel assembly 130 including the wheel connector 135 and the second wheel 137 installed to be rotatable with respect to the wheel support 133, the user can easily control a rotational direction of the board 100 and perform a natural rotational movement. Particularly, due to the combination of the elastic member 139 installed on the wheel connector 135 and the concave portion formed in the wheel support 133, the user can perform a simple operation, for example, an operation of applying a load in a lateral direction like on a snowboard, to easily and intuitively control a moving direction of the board 100.

[0065] Referring to FIGS. 3 and 4 again, in the board 100 according to one embodiment of the present disclosure, the second wheel 137 of the second wheel assembly 130 may be in contact with a ground surface, and the first wheel 123 of the first wheel assembly 120 may float above the ground surface.

[0066] That is, according to one embodiment of the present disclosure, a distance between the second wheel 137 of the second wheel assembly 130 and the deck 110 may be greater than a distance between the first wheel 123 of the first wheel assembly 120 and the deck 110. More specifically, a distance between a lower surface of the second wheel 137 of the second wheel assembly 130 and the lower surface of the deck 110 may be greater than a distance between a lower surface of the first wheel 123 of the first wheel assembly 120 and the lower surface of the deck 110. In this case, a distance may be defined in the third direction perpendicular to the longitudinal direction (first direction) and the width direction (second direction) of the deck.

[0067] Accordingly, in a state in which the board 100 is stopped or moving straight, the first wheel 123 of the first wheel assembly 120 floats above the ground surface, and only the second wheel 137 of the second wheel assembly 130 is in contact with the ground surface and is involved in movement of the board 100. When the user applies a load to one side to rotate the board 100, the board 100 is inclined to the one side, the second wheel 137 of the second wheel assembly 130 rotates in one direction (that is, a direction in which the user intends to rotate) as described above, and the first wheel 123 disposed at the same side comes into contact with the ground surface at the same time to contribute to a smooth movement in a rotational direction intended by the user.

[0068] As described above, according to one embodiment of the present disclosure, the first wheel 123 of the first wheel assembly 120 comes into contact with the ground surface and is involved in a rotational movement of the board 100 only when the board 100 is rotated, and thus the second wheel 137 may be smoothly rotated by a rotation operation of the user, so that an easy and natural rotation operation can be performed.

[0069] Meanwhile, the board 100 according to one embodiment of the present disclosure may further include a binder (not shown) for fixing the foot of the user to the deck 110.

[0070] The above-described board may be formed in any of variously changed shapes. Particularly, the second wheel assembly of the board may be variously changed, and additional embodiments thereof will be described with reference the accompanying drawings.

[0071] FIG. 9 is an enlarged view illustrating one end of a board according to another embodiment of the present disclosure. Referring to FIG. 9, a second wheel assembly 230 of the board according to another embodiment of the present disclosure may include a second wheel mount 231, a pair of wheel supports 233, a pair of wheel connectors 235, a pair of second wheels 237, and an elastic member (not shown) like the previous embodiment.

[0072] The present embodiment is different from the previous embodiment in that concave portions are formed in both sides of each of the wheel supports 233. That is, according to the present embodiment, the concave portions are formed in both sides of the wheel support 233, the elastic member installed at one side of each of the pair of wheel connectors 235 is disposed at a position corresponding to the concave portion when the board is stopped or moving in a straight direction and is rotated to move upward along an inclined surface of the concave portion, and then when the board moves in a straight direction again, the elastic member returns to either side of the wheel support 233.

[0073] FIG. 10 is an enlarged view illustrating one end of a board according to still another embodiment of the present disclosure. Referring to FIG. 10, a second wheel assembly 330 of the board according to still another embodiment of the present disclosure may include a second wheel mount 331, a pair of wheel connectors 335, a pair of second wheels 337, and an elastic member (not shown) like the previous embodiment.

[0074] The second wheel assembly 330 according to the present embodiment is different from those of the previous embodiments in that the wheel connectors 335 and the second wheels 337 are directly mounted on the second wheel mount 331 without wheel supports. That is, according to the present embodiment, the wheel connectors 335 may be directly fastened, for example, screw-coupled, to the second wheel mount 331 without intermediate media such as the wheel supports. According to the present embodiment, a concave portion may be formed in a region of the second wheel mount 331 on which the second wheels 337 are mounted like the previous embodiments. In this case, a location, a shape, and the like of the concave portion may be the same as those in the previous embodiments.

[0075] Although the present disclosure has been described above with reference to the specific content such as specific components and the limited embodiments, the embodiments are provided only to further assist with overall understanding of the present disclosure, the present disclosure is not limited thereto, and various changes and modifications may be made from the descriptions by those skilled in the art to which the present disclosure belongs. For example, the second wheel assembly 130 may be located outside (that is, outside in a first direction) the pair of first wheel assemblies 130 rather than being located between the pair of first wheel assemblies 130. In addition, the second wheel assembly 130 provided on the board 100 to allow a rotation operation may be applied to other exercise apparatuses in addition to the board and used to perform an easy and natural rotational movement of the corresponding exercise apparatus.

[0076] Accordingly, the spirit of the disclosure is defined not by the above-described embodiments but by the appended claims, and encompasses all modifications and equivalents that fall within the scope of the appended claims.


Claims

1. A board comprising:

a deck extending in a first direction;

a pair of first wheel assemblies installed on both sides of the deck in the first direction; and

at least one second wheel assembly disposed between or outside the pair of first wheel assemblies in the first direction and installed on the deck,

wherein each of the pair of first wheel assemblies includes a first wheel mount fixed to the deck and a pair of first wheels installed on the first wheel mount to be spaced apart from each other in a second direction which is a width direction of the deck and is perpendicular to the first direction, and

the at least one second wheel assembly includes a second wheel mount fixed to the deck and a pair of second wheels installed on the second wheel mount to be rotatable with respect to the second wheel mount.


 
2. The board of claim 1, wherein:

a distance between the second wheel and the deck is greater than a distance between the first wheel and the deck; and

wherein the distance is defined as a distance in a third direction perpendicular to the first direction and the second direction.


 
3. The board of claim 1, wherein:

the at least one second wheel assembly further includes a pair of wheel supports installed on the second wheel mount to be spaced apart from each other in the second direction; and

each of the pair of second wheels is installed on one of the pair of wheel supports to be rotatable with respect to the one of the pair of wheel supports.


 
4. The board of claim 1, wherein:

the at least one second wheel assembly includes a pair of wheel connectors installed to be rotatable about an axis in a third direction perpendicular to the first direction and the second direction with respect to the second wheel mount; and

each of the pair of second wheels is fixedly installed on one of the pair of wheel connectors.


 
5. The board of claim 4, wherein:

a concave portion is formed in a region of the second wheel mount on which the pair of second wheels are mounted; and

an elastic member is installed on one side of each of the pair of wheel connectors.


 
6. The board of claim 5, wherein the concave portion is formed in at least one side of each of the second wheels in the first direction.
 
7. The board of claim 5, wherein the concave portion is formed at both sides of each of the second wheels in the first direction.
 
8. The board of claim 5, wherein inclined surfaces are formed on the concave portion to face both sides in the second direction.
 
9. The board of claim 5, wherein the elastic member is installed to be disposed at a location corresponding to the concave portion in a state in which the pair of second wheels are aligned in the first direction.
 
10. The board of claim 9, wherein:

the pair of second wheels and the pair of wheel connectors are configured to be rotated by an external force with respect to the second wheel mount; and

when the external force is removed, the elastic member moves to the concave portion, and the pair of second wheels and the pair of wheel connectors are aligned in the first direction.


 
11. The board of claim 1, wherein a binder for fixing a foot of a user is mounted on the deck.
 
12. A wheel assembly for a board, comprising:

a wheel mount fixedly formed on a deck of the board and branched off toward both sides; and

a pair of wheel supports mounted in regions branched off toward both sides of the wheel mount,

wherein the pair of wheel supports are configured such that wheels are each rotatable with respect to the wheel support.


 
13. The wheel assembly of claim 12, further comprising a pair of wheel connectors installed to be rotatable about an axis in a direction perpendicular to a ground surface with respect to the wheel support,

wherein each of the pair of wheels is installed on one of the pair of wheel connectors, and

a concave portion is formed in a region of each of the wheel supports on which the pair of wheels are mounted.


 
14. The wheel assembly of claim 13, wherein inclined surfaces facing both sides are formed in the concave portion.
 
15. The wheel assembly of claim 12, further comprising a pair of wheel connectors installed to be rotatable about an axis in a direction perpendicular to a ground surface with respect to the wheel support,

wherein each of the pair of wheels is installed on one of the pair of wheel connectors, and

an elastic member is formed on one side of each of the wheel connectors.


 




Drawing




























Search report













Cited references

REFERENCES CITED IN THE DESCRIPTION



This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description