WO2022172706A1

WO2022172706A1 - Shuttlecock

Info

Publication number: WO2022172706A1
Application number: PCT/JP2022/001740
Authority: WO
Inventors: 健一中谷; 謙介田中
Original assignee: ヨネックス株式会社
Priority date: 2021-02-10
Filing date: 2022-01-19
Publication date: 2022-08-18
Also published as: CN116801957A; JP2022122510A; TW202237241A

Abstract

Provided is a shuttlecock that is capable of mitigating impact when caused to fly and collide with a player or racket, while suppressing the effect of wind on the play. The shuttlecock (1) comprises a base section (2) that holds a skirt section (4). The base section comprises: a holding part (24) forming an area that holds the skirt section; an outer forming part (21) forming an area to be hit by a racket; and a core forming part (22) forming an area more inward than the outer forming part. At least a portion of the core forming part is configured by a three-dimensional lattice structure.

Description

shuttlecock

The present invention relates to a shuttlecock hit by a sports racket.

BACKGROUND ART Conventionally, shuttlecocks for badminton have been known in which wings (hereinafter also referred to as skirts) made of natural feathers or artificial feathers made of resin are provided on a generally hemispherical base (see Patent Document 1). ). The base portion is formed by using natural cork, cork formed by solidifying cork particles, or by molding with synthetic resin.

Japanese Patent Application Laid-Open No. 2010-200890

In badminton, there is a need to enjoy playing outdoors as well as indoors. However, when playing badminton outdoors, there is a problem that the flight trajectory of the shuttlecock is likely to change due to the influence of the wind, making it difficult to enjoy playing depending on the strength of the wind.

In order to solve this problem, we considered increasing the weight of the shuttlecock, but the problem arises that when the shuttlecock in flight collides with the player or the racket, the impact will increase. In this way, there is a trade-off relationship between the effect of reducing the effect of the wind on the shuttlecock and the effect of suppressing the impact at the time of collision. I have devised an invention that can be obtained.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shuttlecock capable of suppressing the influence of wind on play and mitigating the impact when it hits a player or a racket in flight. aim.

A shuttlecock of one aspect of the present invention is a shuttlecock provided with a base portion that holds a skirt portion, wherein the base portion includes a holding portion that forms an area that holds the skirt portion and an area that is hit by a racket. and a core forming portion forming an inner region from the outer forming portion, wherein at least a part of the core forming portion is configured with a three-dimensional lattice structure. .

According to the present invention, a three-dimensional lattice structure can secure a large space in which only air exists in the core forming portion of the base portion, and the amount of deformation of the base portion itself can be increased to lengthen the time required for deformation of the base portion. can do. As a result, even if the shuttlecock flies and the base portion collides with the player or the racket, the impact at that time can be mitigated. As a result, even if the shuttlecock is made heavier than the conventional shuttlecock in order to prevent the flight trajectory from being changed due to the influence of the wind outdoors, etc., the impact can be reduced. In this way, by adopting a three-dimensional lattice structure, it is possible to simultaneously obtain an effect of reducing the effect of the wind and an effect of mitigating the impact at the time of collision, which are in a trade-off relationship.

1 is a schematic perspective view of a shuttlecock according to an embodiment; FIG. It is a front view of the said shuttlecock. 4 is an enlarged plan view of the base portion of the shuttlecock; FIG. FIG. 4 is a cross-sectional view along AA in FIG. 3; It is a schematic perspective view of the base part in the shuttlecock which concerns on a modification. FIG. 11 is a schematic perspective view of a base portion of a shuttlecock according to another modified example;

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a schematic perspective view of a shuttlecock according to an embodiment. FIG. 2 is a front view of the shuttlecock. FIG. 3 is an enlarged plan view of the base portion of the shuttlecock.

As shown in FIGS. 1 to 3, the shuttlecock 1 includes a base portion 2 and a skirt portion 4 (not shown in FIG. 3) held by the base portion 2. As shown in FIG. The shuttlecock 1 flies by being hit by a racket (not shown) for racket sports such as badminton. In the following description, the side of the shuttlecock 1 on which the base portion 2 is provided is the front side, and the opposite side (skirt portion 4 side) is the rear side.

The base portion 2 has an outer forming portion 21 that is arranged along the outer peripheral surface of the base portion 2 and forms an area that is hit by the racket. The outer forming portion 21 has a region along a hemispherical curved surface on the front side and a region along a cylindrical curved surface connected to the curved surface on the rear side. The base portion 2 also includes a core forming portion 22 that forms a thick portion (core portion) of the base portion 2 that is an inner region of the outer forming portion 21 . The base portion 2 is made of a synthetic resin that can be elastically deformed by hitting with a racket. A specific configuration of the base portion 2 including the outer forming portion 21 and the core forming portion 22 will be described later.

The skirt portion 4 is provided on the rear side of the base portion 2 and is formed of an integrally molded product made of synthetic resin (for example, nylon resin). The skirt portion 4 shown in the figure is just an example, and various configurations can be adopted as long as it is playable, such as being configured with natural feathers or resin artificial feathers, or using synthetic resin in a form different from the configuration shown in the figure. can.

In the present embodiment, a plurality of skirt portions 4 are provided so as to be arranged in an annular shape at the rear end of the base portion 2 . and a grid portion 42 provided in the rear region. Adjacent rachis 41 are connected to each other by the lattice portion 42 .

Next, the specific configuration of the base portion 2 and the specific configuration of the connection portion between the base portion 2 and the skirt portion 4 will be described with reference to FIG. 4 is a cross-sectional view along AA in FIG. 3. FIG. As also shown in FIG. 4, the base portion 2 has a holding portion 24 serving as an inner forming portion that forms a region for holding the skirt portion 4 therein. The holding portion 24 has a shape in which the rear portion of the base portion 2 is recessed forward, and is provided so as to be fitted to the front end side of the skirt portion 4 to maintain the connection state with the skirt portion 4 .

Specifically, the holding portion 24 has a base portion 26 to which the rear ends of the outer forming portion 21 and the core forming portion 22 are connected, and an opening 26a formed in the center of the base portion 26. It is provided with the 1st accommodating part 27 along. The holding portion 24 also includes a second housing portion 28 that is formed in a dome shape so as to cover the front of the first housing portion 27 , and the diameter of the rear end side of the second housing portion 28 is the same as that of the first housing portion 27 . is formed larger than the inner diameter of the A stepped portion is formed at the front end of the first housing portion 27 so that a later-described hook portion 45 of the skirt portion 4 is fitted.

The skirt portion 4 further includes fitting portions 43 provided in front of the plurality of rachis 41 . The fitting portion 43 includes a columnar insertion portion 44 extending forward from the front ends of the plurality of rachis 41 and a hook portion 45 formed in a flange shape having a larger diameter than the insertion portion 44 at the front end of the insertion portion 44 . and In the present embodiment, when the skirt portion 4 is held by the base portion 2 , at least one of the holding portion 24 and the fitting portion 43 is deformed and the fitting portion 43 is pushed into the holding portion 24 to be inserted. With the fitting portion 43 inserted into the holding portion 24 , the hook portion 45 is engaged with the front end of the first accommodating portion 27 , and the skirt portion 4 is held by the base portion 2 . An adhesive or the like is provided between the holding portion 24 and the fitting portion 43 as necessary.

In the base portion 2, all of the outer forming portion 21 and all of the core forming portion 22 are configured with a three-dimensional lattice structure. Further, all of the first accommodating portions 27 and all of the second accommodating portions 28 of the holding portion 24 in the base portion 2 are also configured with a three-dimensional lattice structure.

Here, the three-dimensional lattice structure of the present embodiment is configured by three-dimensionally connecting a plurality of strips 31 to form a three-dimensional mesh. More specifically, in order to construct the three-dimensional lattice structure, the outer forming portion 21 is formed by connecting a plurality of strips 31 to form a substantially triangular peripheral opening 32 (see FIGS. 1 and 3) as a base. A single layer structure is formed by arranging a plurality of them along the outer peripheral surface of the portion 2 . In the outer forming portion 21, the outer peripheral opening 32 is formed in a substantially equilateral triangular shape in the region along the curved hemispherical surface on the front side, and in a substantially right isosceles triangular shape in the region along the cylindrical curved surface on the rear side. formed (see FIG. 2).

In addition, in order to configure the three-dimensional lattice structure of the base portion 2 , the holding portion 24 has a single layer structure that is generally parallel to the outer forming portion 21 inside the outer forming portion 21 . In addition, the holding portion 24 forms substantially triangular inner peripheral openings 34 side by side by connecting a plurality of strips 31 . 4 is a cross-sectional view at a position where the strip 31 extends linearly in the front-rear direction in the first housing portion 27 of the holding portion 27, and the inner peripheral opening 34 appears at the cross-sectional position. An inner peripheral opening 34 is formed in the first accommodating portion 27 only by not opening.

Further, the core forming portion 22 has a single layered portion 35 formed between the outer forming portion 21 and the holding portion 24 so as to form a three-dimensional lattice structure of the base portion 2 . In other words, the layered portion 35 is spaced apart from both the outer forming portion 21 and the holding portion 24 by a predetermined distance and is arranged substantially parallel thereto. The core forming portion 22 also includes a plurality of connecting portions 36 made up of strips 31 that connect the layered portion 35 and the outer forming portion 21 or connect the layered portion 35 and the holding portion 24 . A plurality of connecting portions 36 position the layered portion 35 between the outer forming portion 21 and the retaining portion 24 .

The layered portion 35 is formed by connecting a plurality of strips 31 in the same manner as the outer forming portion 21 and the holding portion 24 . A plurality of substantially triangular internal openings 37 are formed in the layered portion 35 in the same manner as the outer peripheral opening 32 and the inner peripheral opening 34 . The core forming portion 22 also has a plurality of inner openings 38 surrounded by the connecting portion 36 and the strips 31 forming the outer forming portion 21 , the retaining portion 24 and the layered portion 35 .

The

openings

32, 34, 37, and 38 described above form a single ventilating region in the base portion 2, including the outer forming portion 21 and the core forming portion 22, which are connected to each other without being independent of each other. . A single ventilation region is formed in

adjacent openings

32 , 34 , 37 , 38 in such a manner that the spaces passing through and straddling the

respective openings

32 , 34 , 37 , 38 are connected. The outer peripheral opening 32 allows ventilation inside and outside the base portion 2 , and the air passing through the outer peripheral opening 32 also flows through the

inner openings

37 and 38 .

As described above, in the present embodiment, since the base portion 2 is configured to have a three-dimensional lattice structure as described above, a large space is secured in the core forming portion 22 in which the strips 31 do not exist and only air exists. be able to. As a result, when the shuttlecock 1 flies and the base portion 2 collides with the player or the racket, the deformation of the base portion 2 itself can be increased by securing the space in the base portion 2, and the time required for the deformation can be extended. can do. As a result, when the base portion 2 collides, the impact can be absorbed and mitigated by the deformation of the three-dimensional lattice structure.

Also, by using a plurality of strips 31 in a three-dimensional lattice structure, it is possible to secure a large space in which only air exists in the base portion 2 . As a result, when the strip 31 is made of the same specific gravity as the cork or foamed resin that constitutes the base of the conventional shuttlecock, the strip 31 has a higher density than the conventional base made of cork or foamed resin. The specific gravity of the base portion 2 is smaller, and the weight of the base portion 2 is also smaller. Therefore, in order to reduce the influence of the wind during play, it is necessary to increase the weight of the shuttlecock 1 of this embodiment. For this reason, a material having a higher specific gravity than conventional cork or foamed resin is used for the strip 31, an additional part such as a weight is attached to an arbitrary position of the base portion 2 or the strip 31, or the thickness of the skirt portion 4 is increased. For example, the weight of the shuttlecock 1 is increased. By increasing the weight in this way, it is possible to make it easier to enjoy playing by making it difficult for the flight trajectory to change due to the wind outdoors or the like. As described above, by adopting a three-dimensional lattice structure for the base portion 2, it is possible to simultaneously obtain the effect of reducing the effect of the wind, which is in a trade-off relationship, and the impact mitigating effect at the time of collision as described above. It should be noted that the shuttlecock 1 may be made lighter than the conventional shuttlecock by not adopting a configuration that increases the weight of the shuttlecock 1 .

Although not particularly limited, the maximum width of each

opening

32, 34, 37, 38 is preferably 1 mm or more, and the thickness of each strip 31 is 0.5 mm or more at the thinnest point. preferably. By setting the value within such a numerical range, both the effect of reducing the effect of the wind and the effect of mitigating the impact at the time of collision can be exhibited better.

Furthermore, the three-dimensional lattice structure of the base portion 2 forms a single ventilation area in the base portion 2, so that air can flow inside and outside the base portion 2 through each of the

openings

32, 34, 37, 38 when the shuttlecock 1 is in flight. becomes easier to flow. As a result, even if the wind is blowing outdoors, the wind passes through the base portion 2, which also suppresses changes in the flight trajectory, making it easier to enjoy the game.

In addition, the base portion 2 has a multi-layered three-dimensional lattice structure composed of the outer forming portion 21, the holding portion 24, and the layered portion 35 of the core forming portion 22. Therefore, the racket can be deformed to absorb shock while realizing deformation. It can demonstrate the rigidity and durability that can withstand the impact of . Furthermore, it is possible to adopt a design that can exhibit good repulsion against the ball-striking surface of the racket when the shuttlecock 1 is hit.

It should be noted that the present invention is not limited to the above embodiments, and can be implemented with various modifications. In the above embodiments, the sizes, shapes, directions, etc. shown in the accompanying drawings are not limited to these, and can be changed as appropriate within the scope of exhibiting the effects of the present invention. In addition, it is possible to carry out by appropriately modifying the present invention as long as it does not deviate from the scope of the purpose of the present invention.

Although the base part 2 has been described as having a three-dimensional lattice structure in which all of the outer forming part 21 and all of the core forming part 22 have a three-dimensional lattice structure, it is not limited to this. The present invention can adopt various configurations as long as at least part of the core forming portion 22 has a three-dimensional lattice structure. As an example, it is possible to adopt a configuration in which a half region of the outer formation portion 21, which is the entire region or a partial region in a plan view, is formed in layers of a certain thickness instead of a three-dimensional lattice structure. Further, as an example, a configuration in which the predetermined thickness region surrounding the holding portion 24, which is a partial region of the core forming portion 22, is solidly formed with a constant thickness instead of a three-dimensional lattice structure can be cited.

The layered portions 35 of the outer forming portion 21, the holding portion 24, and the core forming portion 22 (hereinafter referred to as the outer forming portion 21, etc.), which constitute a multi-layered three-dimensional lattice structure, are formed by a plurality of strips 31 and each opening 32. , 34, 37. For example, the outer forming portion 21 and the like may be formed of a layered body having a constant thickness, and a plurality of holes may be arranged in the layered body to form the

respective openings

32, 34, and 37. FIG.

Furthermore, the holding part 24 may be formed in layers having a predetermined thickness without forming the internal opening 37 instead of the three-dimensional lattice structure. In addition, the holding portion 24 is composed only of the base portion 26, and the skirt portion 4 is fixed to the base portion 26 by adhesion or the like. may be Further, the holding portion 24 may be formed with a region for holding the skirt portion 4. For example, the holding portion 24 may be configured to have a small hole formed in a visible state, and the skirt portion 4 may be provided with a pin that can be inserted into the hole and fixed. good too.

Also, the shapes of the

openings

32, 34, and 37 can adopt various shapes such as a polygonal shape other than a triangular shape, a circular shape, an elliptical shape, or a polygonal shape with partially curved sides. For example, the configuration of the base portion 2 shown in FIGS. 5 and 6 can be mentioned. FIG. 5 is a schematic perspective view of a base portion of a shuttlecock according to a modification. FIG. 6 is a schematic perspective view of a base portion of a shuttlecock according to another modification.

The base portion 2 of the modified example of FIG. 5 has a configuration in which the outer peripheral opening 32 is mainly formed in a hexagonal shape, and other polygonal outer peripheral openings 32 such as pentagons are mixed depending on the location. The base portion 2 of the modified example of FIG. 6 is configured such that the outer peripheral opening 32 is mainly formed in a hexagonal or rhombic shape, and other polygonal outer peripheral openings 32 such as pentagons are mixed depending on the location.

The present invention relates to a shuttlecock that can reduce the impact of the wind on play and reduce the impact when it hits a player or a racket in flight.

This application is based on Japanese Patent Application No. 2021-019785 filed on February 10, 2021. All of this content is included here.

Claims

A shuttlecock having a base portion that holds a skirt portion,
the base portion includes a holding portion forming a region for holding the skirt portion;
an outer formation forming an area struck by the racquet;
a core forming portion forming an inner region from the outer forming portion;
A shuttlecock, wherein at least part of the core-forming portion has a three-dimensional lattice structure.
The shuttlecock according to claim 1, wherein at least part of the outer forming portion is configured with a three-dimensional lattice structure.
The shuttlecock according to claim 2, characterized in that all of said core forming parts and all of said outer forming parts are configured with a three-dimensional lattice structure.
The shuttlecock according to claim 2, wherein the three-dimensional lattice structure three-dimensionally connects a plurality of strips to form a single ventilation area in the core forming portion and the outer forming portion.
The shuttlecock according to claim 2, wherein the outer forming portion has an outer peripheral opening that allows air to pass through the inside and outside of the base portion, and the outer peripheral opening is formed in a polygonal shape.
2. The core-forming portion has a layered portion spaced apart from the outer forming portion by a predetermined distance, and the layered portion is formed with a plurality of ventilating internal openings. Shuttlecock described in .
The shuttlecock according to claim 1, wherein the base portion is made of a synthetic resin that is elastically deformable when hit by the racket.