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WO2018131923A1 - Planche de sport - Google Patents

Planche de sport Download PDF

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Publication number
WO2018131923A1
WO2018131923A1 PCT/KR2018/000601 KR2018000601W WO2018131923A1 WO 2018131923 A1 WO2018131923 A1 WO 2018131923A1 KR 2018000601 W KR2018000601 W KR 2018000601W WO 2018131923 A1 WO2018131923 A1 WO 2018131923A1
Authority
WO
WIPO (PCT)
Prior art keywords
side wall
sports board
unit structures
lower plate
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/000601
Other languages
English (en)
Korean (ko)
Inventor
김도년
도영경
이지환
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SNU R&DB Foundation
Original Assignee
Seoul National University R&DB Foundation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seoul National University R&DB Foundation filed Critical Seoul National University R&DB Foundation
Publication of WO2018131923A1 publication Critical patent/WO2018131923A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/0434—Structure of the surface thereof of the side walls
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/122—Selection of particular materials for damping purposes, e.g. rubber or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/20—Boards specially adapted for use in a prone position, e.g. wild-water sledges
    • B63B32/22—Bodyboards for surfing; Accessories specially adapted therefor

Definitions

  • the present invention relates to a sports board, and more particularly to a sports board, such as skiing and snowboarding, or water skiing.
  • sports boards are generally made of a light and elastic material, and at the same time is manufactured to have a structure capable of having sufficient rigidity and elasticity.
  • Performance may vary depending on the material and structure of the board.
  • the board used in the competition may directly affect the performance.
  • skis used for ski jumping provide sufficient support for the user's weight when jumping, and provide resilience to jump, allowing for stable landing by frequent and stabilizing deformations applied to skis before landing. It is good to be made.
  • a sports board having a structure different from the existing structure is required to identify structural characteristics required through structural dynamic analysis through simulation or actual experiment, and to reflect performance thereof to enable performance improvement.
  • the present invention has been made to solve the above-described problems of the conventional sports board, including the core having an aggogetic buffer having a negative Poisson's ratio, so as to satisfy the specific numerical range for the required physical characteristics
  • Another object is to provide a sports board capable of reflecting structural features on a core corresponding to a part thereof.
  • Sports board according to an embodiment of the present invention for solving the above problems is the top and bottom plates spaced apart up and down; And a core attached between the upper plate and the lower plate, wherein the core includes an oggetic buffer configured to have a negative Poisson's ratio.
  • the aggistical buffer portion is formed of a plurality of unit structures that are continuously disposed in the transverse direction, one unit structure is two first side walls disposed to face each other, and each of the first Four second sidewalls extending at an acute angle from both ends of the first sidewall toward the opposite first sidewall, wherein the two first sidewalls and the four second sidewalls form one closed inner space, Two adjacent unit structures may share one of the first sidewall and the second sidewall.
  • At least one of the first sidewall and the second sidewall of each of the two unit structures of the plurality of unit structures may be different from each other.
  • the magnitude of the angle formed by the first sidewall and the second sidewall of each of the two unit structures of the plurality of unit structures may be different from each other.
  • the heights of any two unit structures among the plurality of unit structures may be different from each other.
  • thicknesses of at least one of the first sidewall and the second sidewall of each of the two unit structures of the plurality of unit structures may be different from each other.
  • one or more of the first side wall and the second side wall may be formed to be bent.
  • one or more of the first side wall and the second side wall may be formed obliquely extending to the surface formed by the lower plate.
  • the upper plate and the lower plate may be formed to extend in length, and the first side wall may be disposed to face the extending direction of the upper plate and the lower plate.
  • the upper plate and the lower plate may be formed to extend in length, and the first sidewall may be disposed to face in a direction perpendicular to the extending direction of the upper plate and the lower plate.
  • the core may include a plurality of augitive buffers having a structure having different Poisson's ratios.
  • the core may further include a non-oggetic buffer having a positive Poisson's ratio.
  • a plurality of cores are stacked between the upper plate and the lower plate, and each of the core buffer portion of the core may have a structure having a different Poisson's ratio.
  • FIG. 1 is a perspective view of a sports board according to an embodiment of the present invention.
  • FIG. 2 is a partially enlarged perspective view of the sports board of FIG. 1.
  • FIG. 3 is a side cross-sectional view of the sports board of FIG. 1 along line A-A.
  • FIG. 4 is a plan view of a sports board comprising a core according to one example comprising an aggressive buffer and a non-ogetic buffer.
  • FIG. 5 is a schematic plan view of a unitary structure of the sporting board of FIG. 1.
  • FIG. 6 is a plan view of an aggressive buffer of a sports board according to a modified embodiment.
  • FIG. 7 is a plan view of an ugly shock absorbing part of a sports board according to another modified embodiment.
  • FIG. 8 is a plan view schematically showing the distribution of a single structure of a sports board according to a variant embodiment.
  • Shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are exemplary, and the present invention is not limited to the illustrated items.
  • the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
  • 'comprises', 'haves', 'consists of' and the like mentioned in the present specification other parts may be added unless 'only' is used.
  • the component is expressed in the singular, the plural includes the plural unless specifically stated otherwise.
  • references to elements or layers "on" other elements or layers include all instances where another layer or other element is directly over or in the middle of another element. Like reference numerals refer to like elements throughout.
  • first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.
  • each of the features of the various embodiments of the present invention may be combined or combined with each other in part or in whole, various technically interlocking and driving as can be understood by those skilled in the art, each of the embodiments may be implemented independently of each other It may be possible to carry out together in an association.
  • the sports board 100 includes an upper plate 110, a lower plate 120, and a core 130.
  • the sports board 100 may be various types of skis or snowboards, such as alpine skiing, Nordic skiing, carving skiing, short skiing, skiing boards, slalom skiing, giant slalom skiing, downhill skiing, or water skiing.
  • skis or snowboards such as alpine skiing, Nordic skiing, carving skiing, short skiing, skiing boards, slalom skiing, giant slalom skiing, downhill skiing, or water skiing.
  • the upper plate 110 and the lower plate 120 is formed to extend in the transverse direction.
  • the upper plate 110 and the lower plate 120 is formed to extend to almost the same length.
  • the width of the upper plate 120 and the lower plate 120 may be set differently depending on the position between the front end and the rear end.
  • the front and rear ends of the upper plate 120 and the lower plate 120 may be formed relatively large in width, and the central portion thereof may be formed relatively small in width.
  • the upper plate 110 and the lower plate 120 may be formed flat or bent depending on the position between the front and rear ends.
  • the upper plate 110 and the lower plate 120 are spaced apart vertically.
  • the user's feet are fixed to the top plate 110 by a separate fixing mechanism (not shown).
  • the upper plate 110 is subjected to a load according to the weight of the user.
  • the lower plate 120 contacts the tongue and supports the load applied to the upper plate 110 with respect to the tongue.
  • the upper plate 110 and the lower plate 120 may be formed of two or more plate-like structures each stacked. It is to be understood that the structure and shape of the upper plate 110 and the lower plate 120 can be variously designed through known sports boards.
  • the core 130 is attached between the upper plate 110 and the lower plate 120.
  • the core 130 has substantially the same planar shape as the upper plate 110 and the lower plate 120.
  • the core 130 is surrounded by the upper plate 110 and the lower plate 120 by attaching the upper plate 110 and the lower plate 120 to the upper and lower surfaces, respectively.
  • the core 130 may transfer forces applied to the upper plate 110 and the lower plate 120 to each other, or absorb and offset energy therein.
  • the structure of the core 130 affecting the transfer and absorption of energy between the upper plate 110 and the lower plate 120 will be described in detail.
  • the core 130 includes an optical buffer 130a formed of a structure of a negative Poisson's ratio.
  • the core 130 may include a non-ogetic buffer 130b having a positive Poisson's ratio structure.
  • Figure 4 is shown by way of example for convenience of explanation and understanding, the size, arrangement, shape, etc. of the augmentary buffer portion 130a and non-oggetic buffer portion 130b may be different from that shown. Be careful.
  • Poisson's ratio represents the ratio of compressive strain in its vertical direction to tensile strain in the tensile direction under tensile load.
  • the Poisson's ratio of the core 130 is the first direction with respect to the tensile strain in the first direction when a tensile load is applied in any first direction on the surface formed by the lower plate 120 on which the core 130 is disposed. It can be defined as the ratio of the compressive strain in the second direction perpendicular to the.
  • the direction or plane in which the Poisson's ratio of the core 130 is determined may be set differently according to the shape of the sports board 100.
  • the aggressive buffer portion 130a Since the aggressive buffer portion 130a has a negative Poisson's ratio, it expands in a direction perpendicular thereto when it is extended in the direction in which the tension is applied. For example, as the tensile load is applied to the aggressive buffer 130a in the extending direction of the upper plate 110, the aggressive buffer 130a extends in the width direction of the upper plate 110.
  • the compressed buffer 130a when the compressed buffer 130a is compressed in the direction in which the pressure is applied, it also contracts in the direction perpendicular thereto.
  • the optical buffer unit 130a may be formed of a plurality of unit structures that are continuously disposed in a horizontal direction, that is, a direction perpendicular to the direction of the surface formed by the upper plate 110 or the lower plate 120. As shown in FIG. 4, each unit structure may be opened in the longitudinal direction toward the upper plate 110 and the lower plate 120, and disposed to be adjacent to each other in the transverse direction.
  • one unit structure extends acutely toward two first sidewalls 131 disposed to face each other and opposite first sidewalls 131 from opposite ends of each first sidewall 131.
  • Four second sidewalls 132 may be formed.
  • two adjacent unit structures share one of the first sidewall 131 and the second sidewall 132. That is, two unit structures sharing two first sidewalls 131 and four unit structures sharing four second sidewalls 132 may be disposed around one unit structure.
  • Two first sidewalls 131 and four second sidewalls 132 constituting one unit structure form one closed inner space.
  • the second sidewall 132 extending from both ends of each of the first sidewalls 131 may be connected to the second sidewall 132 extending from the opposite first sidewall 131.
  • the first sidewalls 131 of the unit structure sharing each second sidewall 132 may be connected together. That is, two second sidewalls 132 and one first sidewall 131 may be connected to one connection point.
  • the first side wall 131 is formed to have a width h in the lateral direction.
  • the distance between the unit structures adjacent to both ends of the () closes.
  • the second side wall 132 is formed to have a width l in the transverse direction. In addition, the second sidewall 132 forms a predetermined angle ⁇ with the first sidewall 131 connected thereto.
  • the angle between the first sidewall 131 and the second sidewall 132 is constant, the greater the width l of the second sidewall 132, the two first sidewalls of the unit structure including the second sidewall 132.
  • the distance between the unit structures on both sides sharing the 131 is greater, and the smaller the width l of the second sidewall 132 is, the closer the distance is between the two unit structures.
  • the width l of the second sidewall 132 is constant, the larger the angle ⁇ between the second sidewall 132 and the first sidewall 131 is, the two first sidewalls 131 of the unit structure are separated.
  • the distance between the unit structures on both sides that are shared is increased, and the smaller the angle ⁇ of the second sidewall 132 is, the closer the distance is between the two unit structures.
  • the thickness t of the first sidewall 131 and the second sidewall 132 included in one unit structure may be adjusted to be the same or different from each other.
  • the density, elasticity, rigidity, and the like of the optical buffer 130a may be adjusted.
  • the plurality of unit structures constituting the above-described optical buffer unit 130a may all be formed to have a predetermined size and shape, but different sizes to have different physical characteristics according to respective positions on the sports board 100. Or it may be formed to have a shape.
  • Transverse widths of at least one of the first sidewall 131 and the second sidewall 132 of each of the two unit structures of the plurality of unit structures may be different from each other.
  • the second sidewall 132 of some unit structures has a relatively small width l1
  • the second sidewall 132 of some other unit structures has a relatively large width l2.
  • the two second sidewalls 132 on one side have a small width l1
  • the two side walls 132 are formed to have a large width l2.
  • the first sidewall 131 of some unit structures has a relatively small width h1
  • the first sidewall 131 of some other unit structures has a relatively large width h2.
  • the unit structures having the small width h1 are continuously connected to the unit structures having the large width h2, the unit structures may be formed to have smaller and smaller widths.
  • the width of one or more of the first sidewall 131 and the second sidewall 132 may be adjusted, such that the number of unit structures per unit area in the aggressive buffer 130a may be adjusted.
  • FIG. 8 schematically illustrates a distribution of a plurality of unit structures by corresponding a central position of one unit structure to one point. Distribution of the unit structure as shown is shown by way of example for illustrative purposes, it will be readily understood that it may differ from that shown according to the type, shape, purpose, etc. of the sports board 100.
  • the aggressive buffer portion 130a is formed such that the width h of the first side wall 131 or the width l of the second side wall 132 differs depending on the position on the sports board 100.
  • the unit structure may be formed so as to be densely disposed in the front, rear, and lateral directions, in some positions, relatively coarse in the front, or side, and in some positions, coarse in the front, rear, and side.
  • the aggistical buffer 130a may have structural characteristics such as partially different elasticity and rigidity.
  • the central portion or the rear portion where the bending deformation is relatively small is relatively low in density of the unit structure, and the front portion where the bending deformation is relatively large may be formed relatively in the density of the unit structure. Can be.
  • the aggistical buffer unit 130a has a density of the unit structure with respect to the longitudinal direction, in It may be formed to be larger than the density of the unit structure for.
  • the aggressive buffer unit 130a may be formed such that the heights of any two unit structures among the plurality of unit structures are different from each other.
  • the thickness of the core 130 is different according to the position of the sports board 100, so that the interval between the upper plate 110 and the lower plate 120 may be different.
  • a portion to which relatively large stress can be applied is designed to have a thicker core 130, and a portion to which a relatively small stress is applied may be designed to be thinner to a core 130.
  • the thickness t of at least one of the first sidewall 131 and the second sidewall 132 of each of the two unit structures of the plurality of unit structures may be different from each other.
  • portions where relatively large stress can be applied are designed with thicker sidewalls 131 and 132, and portions where relatively small stress is applied may be designed with thinner sidewalls 131 and 132.
  • the optical buffer 130a may be formed to have different Poisson's ratios.
  • first sidewall 131 and the second sidewall 132 may be formed to be bent. That is, the sidewalls 131 and 132 may be convexly formed inside the unit structure or may be formed outwardly convex. In addition, some sidewalls 131 and 132 may be convexly formed inside the unit structure, and other sidewalls 131 and 132 may be formed convexly outside the unit structure.
  • first sidewall 131 and the second sidewall 132 may be formed obliquely with respect to the surface of the lower plate 120.
  • the bending deformation at the front and rear ends may be relatively large with respect to the center of the sports board 100, and in particular, considering that the bending deformation is formed to retract upward, the unit structure disposed at the front side has an upper opening.
  • the unit structure disposed obliquely toward the front and disposed at the rear side may be obliquely disposed with the upper opening facing rearward.
  • the unit structure of the optical buffer unit 130a having the same shape as in the present embodiment has a different shape with respect to the front, rear, and side, the unit structure may have different characteristics with respect to the front, rear, or side.
  • the first sidewall 131 may be disposed to face the extending direction of the upper plate 110 and the lower plate 120, as shown in FIG. 4.
  • the first sidewall 110 may be disposed to face in a direction perpendicular to the extending direction of the upper plate 110 and the lower plate 120.
  • the unit structures may be disposed obliquely with respect to the extending directions of the upper plate 110 and the lower plate 120.
  • the core 130 may further include a non-oggetic buffer 130b having a positive Poisson's ratio.
  • the agglutination buffer 130a is disposed at some positions, and the non-aggressive buffer 130b is disposed at other positions. ) May be arranged.
  • the non-ogetic buffer 130b may also include a plurality of unit structures, and each unit structure may be formed of various known structures having a positive Poisson's ratio, such as a honeycomb shape.
  • each of the cores 130 may include an optical buffer unit 130a each having a structure having a different Poisson's ratio.
  • the upper core 130 includes an oggetic buffer 130a having a relatively larger Poisson's ratio
  • the lower core 130 has an oggetic buffer of a structure having a relatively smaller Poisson's ratio. It may include a portion 130a.
  • any core 130 may include an aggressive buffer 130a, and another core 130 may include a non-ogetic buffer 130b.
  • cores of various structures may be manufactured in consideration of the shape, size, direction, arrangement, distribution, and the like of the unit structure.
  • the specific design of the core calculates the pressure distribution, energy absorption, tensile stress, shear stress, yield stress, hysteresis, etc. on the board through experiments and simulations of actual operation and structural dynamic analysis. It may be determined by calculating a specific numerical range according to physical properties such as elasticity, density, and rigidity.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

La présente invention concerne une planche de sport qui comprend : une planche supérieure et une planche inférieure disposées de façon à être espacées l'une de l'autre ; et une partie centrale fixée entre la planche supérieure et la planche inférieure. La partie centrale comprend une partie tampon auxétique ayant une structure dotée d'un nombre de Poisson négatif. En comprenant la partie centrale qui comprend la partie tampon auxétique, la planche de sport peut refléter une caractéristique structurale dans la partie centrale correspondant à la planche entière ou à une partie de la planche, de façon à satisfaire à une plage numérique spécifique de caractéristiques physiques requises.
PCT/KR2018/000601 2017-01-13 2018-01-12 Planche de sport Ceased WO2018131923A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0005894 2017-01-13
KR1020170005894A KR101904755B1 (ko) 2017-01-13 2017-01-13 스포츠용 보드

Publications (1)

Publication Number Publication Date
WO2018131923A1 true WO2018131923A1 (fr) 2018-07-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/000601 Ceased WO2018131923A1 (fr) 2017-01-13 2018-01-12 Planche de sport

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KR (1) KR101904755B1 (fr)
WO (1) WO2018131923A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230232935A1 (en) * 2022-01-21 2023-07-27 Joon Bu Park Negative poisson`s ratio materials for winter sports equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819634A (ja) * 1994-07-08 1996-01-23 Yamaha Corp スキー板
JP2005534396A (ja) * 2002-08-02 2005-11-17 オーセティカ リミテッド 拡大性管状ライナ
US20060043696A1 (en) * 2004-09-02 2006-03-02 Alan Trimble Ski with replaceable edge
KR20090024128A (ko) * 2006-05-24 2009-03-06 오그제틱 테크놀로지스 리미티드 복합물

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068861A (en) 1976-02-26 1978-01-17 Hexcel Corporation Lightweight, flexible ski

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819634A (ja) * 1994-07-08 1996-01-23 Yamaha Corp スキー板
JP2005534396A (ja) * 2002-08-02 2005-11-17 オーセティカ リミテッド 拡大性管状ライナ
US20060043696A1 (en) * 2004-09-02 2006-03-02 Alan Trimble Ski with replaceable edge
KR20090024128A (ko) * 2006-05-24 2009-03-06 오그제틱 테크놀로지스 리미티드 복합물

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KANG, DAE SEUNG ET AL.: "A Wire-woven Kagome Transformed to Have a Negative Poisson's Ratio", TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A, vol. 40, no. 9, 2016, pages 827 - 833 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230232935A1 (en) * 2022-01-21 2023-07-27 Joon Bu Park Negative poisson`s ratio materials for winter sports equipment
US12102182B2 (en) * 2022-01-21 2024-10-01 Joon Bu Park Negative Poisson's ratio materials for winter sports equipment

Also Published As

Publication number Publication date
KR101904755B1 (ko) 2018-10-08
KR20180083524A (ko) 2018-07-23

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