EP3932500A1 - Volant de badminton - Google Patents

Volant de badminton Download PDF

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Publication number
EP3932500A1
EP3932500A1 EP19916934.3A EP19916934A EP3932500A1 EP 3932500 A1 EP3932500 A1 EP 3932500A1 EP 19916934 A EP19916934 A EP 19916934A EP 3932500 A1 EP3932500 A1 EP 3932500A1
Authority
EP
European Patent Office
Prior art keywords
feather
shuttlecock
artificial
rotation direction
shaft portion
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.)
Pending
Application number
EP19916934.3A
Other languages
German (de)
English (en)
Other versions
EP3932500A4 (fr
Inventor
Takumi Sakaguchi
Shogo Maeda
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.)
Yonex KK
Original Assignee
Yonex KK
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 Yonex KK filed Critical Yonex KK
Publication of EP3932500A1 publication Critical patent/EP3932500A1/fr
Publication of EP3932500A4 publication Critical patent/EP3932500A4/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
    • A63B67/18—Badminton or similar games with feathered missiles
    • A63B67/183—Feathered missiles
    • A63B67/187—Shuttlecocks
    • A63B67/19—Shuttlecocks with several feathers connected to each other
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/04—Badminton

Definitions

  • the present invention relates to a shuttlecock that uses artificial feathers.
  • Shuttlecocks for badminton include shuttlecocks that use waterfowl feathers (natural feathers) for the feathers (i.e., natural shuttlecocks) and shuttlecocks that use artificial feathers artificially manufactured using nylon resin or the like (i.e., artificial shuttlecocks).
  • a natural shuttlecock uses around 16 natural feathers from geese, ducks, or the like, and has a structure in which the base ends of the feather shafts of the feathers are planted in a hemispherical base (base portion) that is made of cork and covered with a leather.
  • the feathers used in a natural shuttlecock are characterized by having a low specific gravity and being extremely light weight.
  • the feathers are highly rigid, and a natural shuttlecock provides unique flight performance and a comfortable shot feeling.
  • an artificial shuttlecock is provided with feathers that are made of resin and integrally molded in an annular shape, but because the feathers of such an artificial shuttlecock do not move independently on their own like those of a natural shuttlecock, it is difficult to obtain flight performance similar to that of a natural shuttlecock.
  • Patent Document 1 Japanese Patent Application Publication No. 2008-206970
  • the rigidity may not be sufficient to withstand a strong hit such as a smash.
  • the area of the feather portion is reduced, the aerodynamic characteristics further deteriorate.
  • the present invention has been made in view of the foregoing circumstances, and an aspect of the present invention is to provide a shuttlecock capable of having improved aerodynamic characteristics for a shot that involves a greatly disrupted attitude.
  • a main aspect of the invention for achieving the aforementioned object is a shuttlecock including a base portion and a plurality of artificial feathers arranged in an annular shape on the base portion, wherein the artificial feathers each include a feather portion and a feather shaft portion that supports the feather portion, wherein the feather portion includes an overlapping portion that overlaps an inward side of an adjacent feather portion, at a position on a one side of the feather shaft portion in a width direction that is orthogonal to an axial direction, and wherein the feather portion includes an inclined portion that is inclined outward relative to the surface of the overlapping portion, at a position on the other side of the feather shaft portion in the width direction.
  • Clarified is a shuttlecock including: a base portion; and a plurality of artificial feathers arranged in an annular shape on the base portion, the artificial feathers each including a feather portion and a feather shaft portion that supports the feather portion, letting a rotation direction be a counterclockwise direction centered about a central axis of the shuttlecock in a view from a side opposite to the base portion, a first virtual straight line being outward with respect to a second virtual straight line, on a downstream side of the feather shaft portion in the rotation direction, the first virtual straight line being a line connecting a downstream end of the feather portion in the rotation direction and a central portion of the feather shaft portion, the second virtual straight line being a line connecting an upstream end of the feather portion in the rotation direction and the central portion of the feather shaft portion.
  • the feather portion includes an inclined portion at a position between the downstream end of the feather portion in the rotation direction and the feather shaft portion, the inclined portion being a portion that is inclined outward with respect to the second virtual straight line, and that in a view of the feather portion from an extension of an axial direction of the feather shaft portion, a length of the inclined portion is longer than half of a length from the downstream end of the feather portion in the rotation direction to the feather shaft portion.
  • the projected area is larger, thus making it possible to further improve the aerodynamic characteristics.
  • the feather portion includes an overlapping portion that overlaps an inward side of an adjacent feather portion, at a position on an upstream side of the feather shaft portion in the rotation direction, and that the overlapping portion of the feather portion is in contact with the adjacent feather portion.
  • the feather portion includes an overlapping portion that overlaps an inward side of an adjacent feather portion, at a position on an upstream side of the feather shaft portion in the rotation direction, and that the overlapping portion of the feather portion is not in contact with the adjacent feather portion.
  • Clarified is a shuttlecock including: a base portion; and a plurality of artificial feathers arranged in an annular shape on the base portion, the artificial feathers each including a feather portion and a feather shaft portion that supports the feather portion, letting a rotation direction be a counterclockwise direction centered about a central axis of the shuttlecock in a view from a side opposite to the base portion, the feather portion including a protruding portion between a downstream end of the feather portion in the rotation direction and a position overlapped with the feather shaft portion, the protruding portion being a portion that protrudes outward from an outer surface.
  • this shuttlecock it is possible to improve the aerodynamic characteristics for a shot in which the attitude is greatly disrupted (hairpin net shot).
  • FIGS. 1 and 2 are external views for describing the basic structure of an artificial shuttlecock 100 provided with artificial feathers 110 according to a comparative example.
  • FIG. 1 is a perspective view of the artificial shuttlecock 100 (comparative example) seen from one side of a base portion 2.
  • FIG. 2 is a perspective view of the artificial shuttlecock 100 (comparative example) seen from one side of the artificial feathers 110.
  • the artificial shuttlecock 100 includes a base portion 2, a plurality of artificial feathers 110 that mimic natural feathers, and string-shaped members 3 for fixing the artificial feathers 110 to each other.
  • the base portion 2 is constituted by covering a cork base with a thin leather, for example.
  • the base portion 2 is shaped as a hemisphere having a diameter of 25 mm to 28 mm, and has a flat surface.
  • the roots (base ends) of the artificial feathers 110 are embedded in the flat surface in an annular shape along the periphery of the flat surface.
  • the artificial feathers 110 are arranged such that the distance between them becomes wider as the distance from the base portion 2 increases.
  • each artificial feather 110 is arranged so as to be overlapped with the adjacent artificial feathers 110.
  • a skirt portion 4 is formed by the artificial feathers 110.
  • the artificial feathers 110 are fixed to each other by the string-shaped members 3 (e.g., cotton strings).
  • the artificial shuttlecock 100 rotates in a predetermined direction (rotation direction) around the central axis of the shuttlecock during normal flight (at a low angle of attack described later).
  • the rotation direction is the counterclockwise direction when viewed from the artificial feather 110 side in FIG. 2 (the side opposite to the base portion 2), or in other words the clockwise direction when viewed from the base portion 2.
  • the central axis of the shuttlecock is the axis that passes through the center of the ring formed by the artificial feathers (here, the artificial feathers 110), or in other words the center of the skirt portion 4, as well as the center of the base portion 2.
  • FIG. 3A is a perspective view of the artificial feather 110 of the comparative example
  • FIG. 3B is a schematic view of the artificial feather 110 as viewed from above.
  • the members that have already been described are denoted by the same reference signs.
  • the artificial feather 110 includes a feather portion 120 and a feather shaft portion 14.
  • the feather portion 120 is a portion corresponding to the vane of a natural feather
  • the feather shaft portion 14 is a portion corresponding to the rachis of a natural feather.
  • the vertical direction (corresponding to the axial direction) is defined along the lengthwise direction of the feather shaft portion 14, the side with the feather portion 120 is the upper side (tip), and the opposite side is the lower side (base).
  • the front and the back are defined based on the state in which the artificial feather 110 is attached to the base portion 2.
  • the front-back direction corresponds to a normal direction of the feather portion 120
  • the front and the back respectively correspond to the outer side and the inner side in the state where the artificial feathers 110 are arranged in an annular shape on the base portion 2.
  • the left-right direction is defined along the direction in which the feather portion 120 extends from the feather shaft portion 14 (the direction orthogonal to the vertical direction).
  • the feather portion 120 is a member that mimics the shape of the vane of a natural feather.
  • the feather portion 120 can be constituted by nonwoven fabric or resin, for example.
  • a reinforcing film is formed on the surface in order to prevent the fibers of the nonwoven fabric from coming loose during a hit.
  • the reinforcing film can be formed by applying a resin, and various coating methods such as a dipping method, a spraying method, and a roll coating method are adopted.
  • the reinforcing film may be formed on one side of the feather portion 120 or on both sides.
  • the reinforcing film may be formed on the entire surface of the feather portion 120 or a part of the surface.
  • the shape of the feather portion 120 is not limited to the shape shown in the figures (the same applies to a feather portion 12 described later). For example, an elliptical shape may be adopted.
  • the feather shaft portion 14 is an elongated member that mimics the shape of the rachis of a natural feather, and is a member that supports the feather portion 120.
  • the feather shaft portion 14 has a feather support portion 14a that supports a region from the upper edge of the feather portion 120 to the lower edge thereof, and a calamus portion 14b that protrudes from the feather portion 120.
  • the calamus portion 14b is a portion corresponding to the calamus (note that this is sometimes called the quill) of a natural feather.
  • the base end of the feather shaft portion 14 (the lower end of the calamus portion 14b) is embedded in the base portion 2 and fixed to the base portion 2. On the other hand, the tip of the feather shaft portion 14 coincides with the upper end of the feather portion 12.
  • the cross-sectional shape of the feather shaft portion 14 is a quadrangle (rectangle), but the cross-sectional shape is not limited to this, and other shapes (circle, ellipse, polygon, etc.) may be used.
  • the feather shaft portion 14 and the feather portion 120 may be separate bodies or may be integrated.
  • the feather shaft portion 14 and the feather portion 120 can be integrally molded by injection molding using a mold.
  • the feather shaft portion 14 and the feather portion 120 can be integrally formed using different materials by performing injection molding (twocomponent molding) using two kinds of materials (resins).
  • the feather portion 120 may be supported on the front side of the feather support portion 14a, or the feather portion 120 may be supported on the back side of the feather support portion 14a. Also, a configuration is possible in which the feather portion 120 is constituted by two sheets, and two feather portions 120 sandwich the feather support portion 14a. Moreover, the feather portion 120 may be embedded inside the feather support portion 14a.
  • FIG. 4 is a schematic view of artificial feathers 110 arranged on the artificial shuttlecock 100 of the comparative example as viewed from above.
  • the feather portions 120 are arranged such that the feather portions 120 overlap each other with slightly different angles. More specifically, the right end portion of each feather portion 120 overlaps the inward side of the left end portion of the adjacent feather portion 120. This portion of the right end portion (the portion that overlaps the adjacent feather portion 120) will be referred to as an overlapping portion S. Also, in this example, each feather portion 120 (specifically, the end portion of the overlapping portion S) is in contact with the adjacent feather portion 120.
  • the weight of the artificial feather 110 is heavier than that of a natural feather. If the feather shaft portion 14 is made thinner and lighter, there is a possibility that the rigidity is not sufficient to withstand a strong hit such as a smash, and if the area of the feather portion 120 is reduced, there is a possibility that the aerodynamic characteristics deteriorate. Even if the total weight of the artificial shuttlecock 100 is adjusted to match that of a natural shuttlecock, it is difficult to match the center of gravity, and the position of the center of gravity is rearward (away from the base portion 2) of that of a natural shuttlecock. Therefore, stability deteriorates when the attitude is greatly disrupted.
  • the aerodynamic characteristics are improved for a shot (hairpin net shot) in which the attitude is greatly disrupted.
  • a shot hairpin net shot
  • an attitude close to normal flight is referred to as "low angle of attack”
  • a state in which the attitude is greatly disrupted with respect to the direction of travel is referred to as "high angle of attack”.
  • FIG. 5 is a schematic view of an artificial feather 10 of the first embodiment as viewed from above.
  • FIG. 6 is a schematic view of a plurality of artificial feathers 10 arranged on the artificial shuttlecock 1 of the first embodiment as viewed from above. Note that portions that have the same configuration as those in the comparative example are designated by the same reference numerals, and the description thereof will be omitted. Also, the definitions of directions are the same as those of the comparative example.
  • a straight line (dashed-dotted line) connecting the left end of the feather portion 12 (downstream end in the rotation direction) and the central portion of the feather shaft portion 14 is a virtual straight line M (corresponding to a first virtual straight line).
  • a straight line (dashed line) connecting the right end (upstream end in the rotation direction) of the feather portion 12 and the central portion of the feather shaft portion 14 is a virtual straight line N (corresponding to a second virtual straight line).
  • the central portion of the feather shaft portion 14 is a portion at the axial center of the feather shaft portion 14, such as the intersection of diagonal lines in the case where the cross-sectional shape of the feather shaft portion 14 is rectangular as in the present embodiment.
  • the central portion is the intersection of the long axis and the short axis.
  • the artificial shuttlecock 1 of the present embodiment includes a plurality of artificial feathers 10.
  • the artificial feathers 10 are arranged in an annular shape along the circumference of the flat surface of the base portion 2 (not shown here).
  • the artificial feathers 10 of the artificial shuttlecock 1 of the present embodiment each have the feather portion 12 and the feather shaft portion 14.
  • the shape of the feather portion 12 is different from that of the feather portion 120 (see FIG. 3B ) of the above-described comparative example.
  • the feather portion 12 is supported by the feather shaft portion 14 similarly to the comparative example ( FIG. 3A ).
  • the end portion of the feather portion 12 on the right side of the feather shaft portion 14 overlaps the inward side of the left end portion of the adjacent feather portion 12 (overlapping portion S), similarly to the comparative example.
  • the feather portion 12 has an inclined portion 12a on the left side of the feather shaft portion 14.
  • the inclined portion 12a is inclined outward (toward the front side) at an angle ⁇ (corresponding to an inclination angle) with respect to the virtual straight line N (second virtual straight line). Therefore, the widthwise length of the overlapping portion S is shorter than that of the comparative example ( FIG. 4 ) .
  • the right end (overlapping portion S) of the feather portion 12 is not in contact with the left end (inclined portion 12a) of the adjacent feather portion 12.
  • the virtual straight line M (first virtual straight line) is outward (on the front side) with respect to the virtual straight line N, on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the artificial shuttlecock 1 of the present embodiment has a larger projected area at a high angle of attack than the artificial shuttlecock 100 of the comparative example.
  • the projected area is the area of the "shadow" created when a three-dimensional object is projected in two dimensions (here, the area when the shuttlecock is viewed from the side) .
  • the artificial shuttlecock 1 has higher air resistance (drag) at a high angle of attack, and therefore when compared with the comparative example (artificial shuttlecock 100), it is possible to suppress unstable behavior (staggering, etc.) when the attitude is greatly disrupted, making it more easier to stabilize the attitude.
  • drag is a component (component force) parallel to the direction of an airflow. Note that the component (component force) perpendicular to the direction of the airflow is called lift.
  • Pitching moment is the force of attempting to return to the original attitude (to a low angle of attack) when there is a difference between the direction of the airflow and the orientation of the base portion (i.e., when the shuttlecock is inclined with respect to the airflow).
  • the drag and the pitching moment were measured by using a plurality of (five here) samples (artificial shuttlecocks 1) that had different bending angles ⁇ (corresponding to the inclination angle) of the inclined portion 12a of the feather portion 12. Note that the sample with a bending angle of 0 degrees corresponds to the artificial shuttlecock 100 of the comparative example.
  • FIG. 7 is a diagram showing evaluation results for drag of the artificial shuttlecock 1.
  • the horizontal axis shows the bending angle (inclination angle), and the vertical axis shows the ratio of the relative drag if drag when the bending angle is 0 degrees is considered to 100.
  • a normal wind tunnel test was conducted when performing the evaluation. Specifically, the artificial shuttlecock 1 was placed in the airflow of the wind tunnel device, and the drag acting on the artificial shuttlecock 1 was measured by a load cell. Also, in FIG. 7 , a comparison is made measured value totals for angles of attack from 0 to 140 degrees at measurement intervals of 10 degrees.
  • FIG. 8 is a diagram showing evaluation results for the pitching moment of the artificial shuttlecock 1.
  • the horizontal axis shows the bending angle (inclination angle)
  • the vertical axis shows the ratio of the relative pitching moment if a pitching moment when the bending angle is 0 degrees is considered to 100.
  • the method for evaluating the pitching moment was the same as in the case of drag described above.
  • the effect was confirmed using the above-mentioned five samples that had different bending angles ⁇ .
  • the effect was confirmed by a method of comparing hairpin net shots hit by three experienced badminton players. Specifically, all five samples were evaluated by a paired comparison method and scored. Note that the paired comparison method is a method in which two samples (a pair) are extracted, 1 point is given to a good sample, 0 points are given in the case of equivalency, and -1 point is given to a bad sample. All pairs were evaluated through round robin and statistically processed.
  • FIG. 9 is a diagram showing evaluation results of the effect confirmation test.
  • the horizontal axis shows the bending angle ⁇
  • the vertical axis shows the evaluation score.
  • the bending angle (inflection point) at which the effect appears was calculated. Specifically, calculation was performed to find the intersection of a straight line passing through two points with a small bending angle and a straight line passing through two points with a large bending angle. As a result, the bending angle (inflection point) at which the effect appears was 12.2 degrees.
  • the artificial shuttlecock 1 of the present embodiment can have a higher drag and pitching moment than the artificial shuttlecock 100 (bending angle of 0 degrees) of the comparative example due to increasing the bending angle ⁇ of the inclined portion 12a to a certain extent. Therefore, compared with the comparative example (sample with a bending angle of 0 degrees), the artificial shuttlecock 1 of the present embodiment can suppress unstable behavior when the attitude is greatly disrupted, making it possible to further stabilize the attitude.
  • feather portion 12 is provided with the overlapping portion S in the present embodiment, the overlapping portion S may be omitted. In other words, adjacent feather portions 12 do not need to overlap each other in the width direction (the same applies to the following embodiments).
  • FIG. 10A is a schematic view of an artificial feather 10a of a first variation as viewed from above.
  • FIG. 10B is a schematic view of a plurality of artificial feathers 10a arranged on the artificial shuttlecock 1 as viewed from above.
  • the feather portion 12 is inclined (bent) outward by an angle ⁇ with respect to the virtual straight line N, at a position on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the feather portion 12 has an inclined portion (inclined portion 12a) and a non-inclined portion (portion between the inclined portion 12a and the feather shaft portion 14).
  • the virtual straight line M is outward with respect to the virtual straight line N, on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the projected area is larger than that of the comparative example (artificial shuttlecock 100). Therefore, the attitude can stabilize more easily than in the case of the comparative example.
  • a length L1 of the inclined portion 12a when the feather portion 12 is viewed from above (on an extension of the axial direction) is longer than a length L2 of the non-inclined portion (in other words, the length L1 of the inclined portion 12a is longer than half of the length from the left end (downstream end in the rotation direction) of the feather portion 12 to the feather shaft portion 14).
  • the projected area is larger, and the attitude can be more stabile (the aerodynamic characteristics can be improved) in comparison with the opposite case (when L2 is longer than L1).
  • the right end portion (overlapping portion S) of the feather portion 12 may be in contact with the adjacent feather portion 12.
  • the size of the feather portion 12 may be changed so as to come into contact with the adjacent feather portion 12. If adjacent feather portions 12 are in contact with each other in this way, it becomes easier to suppress rotation around the central axis during normal flight (at a low angle of attack).
  • the bending angle ⁇ can be made larger, and therefore the projected area can be made larger.
  • the bending angle ⁇ (inclination angle) of the inclined portion 12a is constant regardless of the position in the vertical direction (axial direction). But the present invention is not limited to this, and the bending angle ⁇ (inclination angle) may be different depending on the position in the vertical direction (axial direction). In particular, increasing the bending angle ⁇ of the inclined portion 12a toward the upper side (tip side) in the vertical direction is effective in improving the aerodynamic characteristics. Also, in this case, since the bending angle ⁇ is small on the side close to the base portion 2, the airflow entering the skirt portion 4 is not likely to escape to the outside.
  • FIG. 11 is a schematic view of an artificial feather 10b of a second variation as viewed from above.
  • the portion of the feather portion 12 on the right side (upstream side in the rotation direction) of the feather shaft portion 14 is curved in the front-back direction instead of being flat.
  • the inclined portion 12a is inclined outward with respect to the virtual straight line N
  • the virtual straight line M is outward of the virtual straight line N on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the projected area is large, and the attitude can be stabilized (the aerodynamic characteristics can be improved), similarly to the above-described embodiment.
  • FIG. 12 is a schematic view of an artificial feather 10c of a third variation as viewed from above.
  • the right end portion of the feather portion 12 is bent inward (toward the back side).
  • the inclined portion 12a is inclined outward with respect to the virtual straight line N
  • the virtual straight line M is outward of the virtual straight line N on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the projected area is large, and the attitude can be stabilized (the aerodynamic characteristics can be improved), similarly to the above-described embodiment.
  • FIG. 13 is a schematic view of an artificial feather 10d of a fourth variation as viewed from above.
  • the feather portion 12 is bent outward on the right side (upstream side in the rotation direction) of the feather shaft portion 14.
  • the inclined portion 12a is inclined outward with respect to the virtual straight line N
  • the virtual straight line M is outward of the virtual straight line N on the left side (downstream side in the rotation direction) of the feather shaft portion 14.
  • the projected area is large, and the attitude can be stabilized (the aerodynamic characteristics can be improved), similarly to the above-described embodiment.
  • FIG. 14 is a schematic view of an artificial feather 10' of the artificial shuttlecock 1 of a second embodiment as viewed from above.
  • the arrangement on the base portion 2 (not shown here) is the same as that of the first embodiment described above, and therefore will not be described.
  • the artificial feather 10' of the second embodiment includes a feather portion 12' and a feather shaft portion 14.
  • the feather portion 12' has a ground portion 12b and a protruding portion 12c.
  • the ground portion 12b is the same member as the feather portion 120 of the comparative example ( FIGS. 3 and 4 ), and is supported by the feather shaft portion 14. Also, the right end portion of the ground portion 12b (overlapping portion S) overlaps the inward side of the adjacent feather portion 12' (ground portion 12b).
  • the protruding portion 12c is provided so as to project outward from the outer surface of the ground portion 12b. Also, the protruding portion 12c is provided at a position overlapping the feather shaft portion 14 in the width direction (rotation direction).
  • the feather portion 12' of the second embodiment is provided with the protruding portion 12c on the outward side of the root portion 12b.
  • the projected area at a high angle of attack is large, thus making it possible to suppress unstable behavior when the attitude is greatly disrupted, and the attitude can be more stable.
  • the protruding portion 12c is not limited to being formed at the position described above. It is sufficient that the protruding portion 12c is formed at a position between the left end (downstream end in the rotation direction) of the feather portion 12' and the feather shaft portion 14. In other words, the protruding portion 12c may be provided on the left side (downstream side in the rotation direction) of the feather shaft portion 14. Note that if the protruding portion 12c is provided at a position overlapping the feather shaft portion 14 in the width direction (rotation direction) as in the present embodiment, the balance is improved and the feather shaft portion 14 can easily support the feather portion 12'.

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  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
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EP19916934.3A 2019-02-28 2019-12-24 Volant de badminton Pending EP3932500A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019035517A JP7267035B2 (ja) 2019-02-28 2019-02-28 シャトルコック
PCT/JP2019/050567 WO2020174854A1 (fr) 2019-02-28 2019-12-24 Volant de badminton

Publications (2)

Publication Number Publication Date
EP3932500A1 true EP3932500A1 (fr) 2022-01-05
EP3932500A4 EP3932500A4 (fr) 2022-11-09

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EP19916934.3A Pending EP3932500A4 (fr) 2019-02-28 2019-12-24 Volant de badminton

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EP (1) EP3932500A4 (fr)
JP (1) JP7267035B2 (fr)
CN (1) CN113631235A (fr)
TW (1) TWI770456B (fr)
WO (1) WO2020174854A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA343728A (fr) * 1934-08-07 Hoult Pollitt Donovan Volant
US2830817A (en) 1954-02-16 1958-04-15 Sportex G M B H Shuttles or bird structures for badminton
CN2635151Y (zh) * 2003-06-10 2004-08-25 张正昌 改进结构的羽毛球
JP4651051B2 (ja) 2007-02-02 2011-03-16 美津濃株式会社 バドミントン用シャトルコック、シャトルコック用人工羽根およびそれらの製造方法
JP2010082160A (ja) 2008-09-30 2010-04-15 Mizuno Corp バドミントン用シャトルコックおよびシャトルコック用ベース本体
CN101745207A (zh) * 2008-12-08 2010-06-23 绍兴九州体育用品有限公司 环保型羽毛球及其制造方法
JP2011239810A (ja) 2010-05-14 2011-12-01 Toyo Plastic Seiko Co Ltd シャトルコック用人工羽根およびその製造方法
CN102671353A (zh) 2011-03-06 2012-09-19 张文广 羽毛球
CN102527009A (zh) 2012-02-02 2012-07-04 李太平 一种体育运动球类构件
JP2014158603A (ja) 2013-02-20 2014-09-04 Yonex Co Ltd シャトルコック
JP6756517B2 (ja) 2016-05-09 2020-09-16 ヨネックス株式会社 シャトルコック用人工羽根、及び、シャトルコック

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JP7267035B2 (ja) 2023-05-01
TW202033245A (zh) 2020-09-16
EP3932500A4 (fr) 2022-11-09
WO2020174854A1 (fr) 2020-09-03
CN113631235A (zh) 2021-11-09
TWI770456B (zh) 2022-07-11
JP2020137804A (ja) 2020-09-03

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