CN116801957A - Badminton ball - Google Patents

Abstract

Provided is a badminton which can alleviate the impact of a player and a racket when the badminton collides with the player and the racket during flying while suppressing the influence of wind on playing. The shuttlecock (1) is configured to be provided with a base (2) for holding a skirt (4). The base is provided with: a holding part (24) which forms a region for holding the skirt; an outer forming part (21) which forms an area hit by the racket; and a core forming part (22) which forms a region on the inner side than the outer forming part. At least a part of the core forming portion is formed of a three-dimensional lattice structure.

Description

Badminton ball

Technical Field

The present application relates to a badminton hit with a racket for sports.

Background

Conventionally, as a shuttlecock for shuttlecocks, a shuttlecock is known in which a substantially hemispherical base is provided with wings (hereinafter, also referred to as a skirt) made of natural feathers or artificial feathers made of resin (see patent document 1). The base is formed by using natural cork, cork formed by fixing cork particles, or formed by using synthetic resin.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2010-200890

Disclosure of Invention

Problems to be solved by the application

In badminton, there is a demand for enjoying play not only indoors but also outdoors. However, performing outdoor badminton has such a problem that: the flying trace of the shuttlecock is easily changed due to the influence of wind, and it is difficult to enjoy playing due to the intensity of wind.

In order to solve this problem, a high weight of shuttlecocks has been studied, but there is a problem that if a flying shuttlecock collides with a player or a racket, the impact becomes large. In this way, there is a trade-off (trade-off) relationship between the effect of reducing the influence of the wind on the shuttlecock and the impact-suppressing effect at the time of collision, but the present inventors have made intensive studies and have devised an application capable of simultaneously obtaining both effects.

The present application has been made in view of the above, and an object of the present application is to provide a badminton capable of reducing the impact of wind on play and reducing the impact of the badminton when flying, a player, and a racket.

Means for solving the problems

In one aspect of the present application, there is provided a shuttlecock including a base portion for holding a skirt portion, the base portion including: a holding portion that forms a region for holding the skirt portion; an outer forming part forming an area hit by the racket; and a core forming portion that forms a region on the inner side of the outer forming portion, wherein at least a part of the core forming portion is formed of a three-dimensional lattice structure.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present application, by using the three-dimensional lattice structure, a large space where only air is present can be ensured in the core forming portion of the base, and an increase in the deformation amount of the base itself can be achieved, thereby extending the time required for the deformation of the base. Thus, even if the base collides with a player or a racket when the shuttlecock flies, the impact at that time can be alleviated. Accordingly, even if a conventional shuttlecock is heavier in order to make it difficult for the flight path to change due to the influence of wind such as outdoors, impact can be alleviated. In this way, by adopting the three-dimensional lattice structure, the effect of reducing the influence of wind in a trade-off relationship and the effect of reducing the impact at the time of collision can be obtained at the same time.

Drawings

Fig. 1 is a schematic perspective view of a shuttlecock according to the embodiment.

FIG. 2 is a front view of the shuttlecock.

FIG. 3 is an enlarged top view of the base of the shuttlecock.

Fig. 4 is a cross-sectional view taken along A-A of fig. 3.

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.

Detailed Description

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic perspective view of a shuttlecock according to the embodiment. FIG. 2 is a front view of the shuttlecock. FIG. 3 is an enlarged top view of the base of the shuttlecock.

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

The base 2 includes an outer forming portion 21 which is disposed along the outer peripheral surface of the base 2 to form a region to be struck by a 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 2 further includes a core forming portion 22, and the core forming portion 22 is formed as a thick portion (core portion) of the base 2 in a region inside the outer forming portion 21. The base 2 is made of synthetic resin that can be elastically deformed by the striking of the racket. The specific configuration of the base 2 including the outer side forming portion 21 and the core forming portion 22 will be described later.

The skirt 4 is provided on the rear side of the base 2, and is formed of an integrally molded product made of a synthetic resin (for example, nylon resin). The skirt 4 shown in the drawing is an example, and may be made of natural feathers or artificial feathers made of resin, or may be formed of synthetic resin in a form different from the form shown in the drawing, and various forms may be adopted in the playable range.

In the present embodiment, the skirt portion 4 is provided in a plurality of annular rows at the rear end of the base portion 2, and includes a plurality of shafts 41 that are spaced apart from each other with distance from the base portion 2, and a lattice portion 42 provided in a rear region of the shafts 41. Adjacent shafts 41 are connected to each other by the lattice portion 42.

Next, a specific structure of the base 2 and a specific structure of a connecting portion between the base 2 and the skirt 4 will be described with reference to fig. 4. Fig. 4 is a cross-sectional view taken along A-A of fig. 3. As also shown in fig. 4, the base 2 includes a holding portion 24, and the holding portion 24 is an inner side forming portion that forms a region inside the holding portion to hold the skirt 4. The holding portion 24 has a shape in which the rear portion of the base 2 is recessed forward, and is provided so as to be fitted to the front end side of the skirt portion 4, and can maintain a connection state with the skirt portion 4.

Specifically, the holding portion 24 includes a base portion 26 connected to rear ends of the outer forming portion 21 and the core forming portion 22, and a first housing portion 27 having a cylindrical inner peripheral shape extending forward from around an opening 26a formed in the center of the base portion 26. The holding portion 24 includes a second housing portion 28 formed in a dome shape so as to cover the front of the first housing portion 27, and the diameter dimension of the rear end side of the second housing portion 28 is formed larger than the inner diameter of the first housing portion 27. A stepped portion is formed at the front end of the first housing portion 27, which is fitted to a hooking portion 45 described later of the skirt portion 4.

The skirt 4 further includes fitting portions 43 provided in front of the plurality of shafts 41. The fitting portion 43 includes a columnar insertion portion 44 extending forward from the distal ends of the plurality of shafts 41, and a flange-shaped hooking portion 45 formed at the distal end of the insertion portion 44 and having a diameter larger than that of the insertion portion 44. In the present embodiment, when the skirt 4 is held by the base 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. Then, in a state where the fitting portion 43 is inserted into the holding portion 24, the hook portion 45 is fitted to the tip of the first housing 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 needed.

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

Here, the three-dimensional lattice structure of the present embodiment is formed by three-dimensionally connecting a plurality of strips 31, and is formed into a three-dimensional net shape. More specifically, to form the three-dimensional lattice structure, the outer side forming portion 21 has a single layer structure in which a plurality of substantially triangular outer peripheral openings 32 (see fig. 1 and 3) are arranged along the outer peripheral surface of the base 2 by connecting a plurality of strips 31. In the outer forming portion 21, the outer peripheral opening 32 is formed into a substantially equilateral triangle in a region along a hemispherical curved surface on the front side, and is formed into a substantially right isosceles triangle in a region along a cylindrical curved surface on the rear side (see fig. 2).

In order to form a three-dimensional lattice structure of the base 2, the holding portion 24 has a single layer structure that is substantially parallel to the outer forming portion 21 on the inner side of the outer forming portion 21. The holding portion 24 is formed by connecting the plurality of strips 31 to each other so as to form a substantially triangular inner peripheral opening 34. In fig. 4, the first housing portion 27 of the holding portion 27 is cut at a position where the strip 31 linearly extends in the front-rear direction, the inner peripheral opening 34 is not shown only at the position where the strip is cut, and the inner peripheral opening 34 is formed in the first housing portion 27.

In order to form a three-dimensional lattice structure of the base 2, the core forming portion 22 includes a single layered portion 35 formed between the outer forming portion 21 and the holding portion 24. In other words, the layered portion 35 is disposed substantially parallel to both the outer forming portion 21 and the holding portion 24 so as to be spaced apart from each other by a predetermined distance. The core forming portion 22 includes a plurality of connecting portions 36 formed of the tape 31 for connecting the layer portion 35 and the outer forming portion 21 or connecting the layer portion 35 and the holding portion 24. The layered portion 35 is positioned between the outer forming portion 21 and the holding portion 24 by the plurality of connecting portions 36.

The layered portion 35 is formed by connecting the plurality of strips 31, similarly to the outer forming portion 21 and the holding portion 24. In the layered portion 35, a plurality of inner openings 37 having a substantially triangular shape are formed similarly to the outer peripheral openings 32 and the inner peripheral openings 34. In addition, a plurality of inner openings 38 surrounded by the connecting portion 36 and the strip 31 forming the outer forming portion 21, the holding portion 24, and the layer portion 35 are also formed in the core forming portion 22.

Through the openings 32, 34, 37, and 38, a single ventilation area is formed in the base 2 including the outer forming portion 21 and the core forming portion 22 so as not to be connected independently of each other. The single ventilation area is formed at the adjacent openings 32, 34, 37, 38 in a state of being connected across the space of each opening 32, 34, 37, 38. The outer peripheral opening 32 can be ventilated inside and outside the base 2, and air passing through the outer peripheral opening 32 flows into the inner openings 37 and 38.

As described above, in the present embodiment, since the base 2 is configured by the three-dimensional lattice structure as described above, a large space can be ensured in the core forming portion 22 in which only air is present without the tape 31. Accordingly, when the shuttlecock 1 flies and the base 2 collides with a player or a racket, the deformation of the base 2 itself can be increased in accordance with the space secured in the base 2, and the time taken for the deformation can be delayed. As a result, when the base 2 collides, the deformation of the three-dimensional lattice structure can be used to absorb and alleviate the impact.

In addition, by using a plurality of strips 31 in a three-dimensional lattice structure, a large space where only air is present can be ensured at the base 2. Thus, when a material having the same specific gravity as cork and foamed resin constituting the base of the conventional shuttlecock is used for the belt 31, the specific gravity of the base 2 according to the present embodiment is smaller and the weight of the base 2 is also smaller than that of the base using cork and foamed resin. Therefore, in order to reduce the influence of wind during play, the weight of the shuttlecock 1 of the present embodiment needs to be increased. Accordingly, the weight of the shuttlecock 1 is increased by using a material having a higher specific gravity than conventional cork or foamed resin for the strip 31, by attaching additional members such as weights to any position of the base 2 or the strip 31, or by increasing the thickness of the skirt 4. By increasing the weight in this way, the flight path is less likely to change due to wind such as outdoors, and the user can enjoy the game. As described above, by adopting a three-dimensional lattice structure for the base 2, it is possible to obtain both the effect of reducing the influence of wind in a trade-off relationship and the impact alleviation effect at the time of the collision. Further, the shuttlecock 1 may be made lighter than the conventional shuttlecocks without adopting a structure for increasing the weight of the shuttlecock 1.

Although not particularly limited, the maximum width of each of the openings 32, 34, 37, 38 is preferably 1mm or more, and the thickness of each of the strips 31 is preferably 0.5mm or more at the thinnest portion. By setting the range of the values, both the effect of reducing the influence of wind and the effect of reducing the impact at the time of collision can be more effectively exhibited.

Further, since a single ventilation area is formed in the base 2 by the three-dimensional lattice structure of the base 2, air can easily flow inside and outside the base 2 through the openings 32, 34, 37, 38 when the shuttlecock 1 is flying. Thus, even when wind blows outdoors, the wind passes through the base 2, and thus, the change in the flight path can be suppressed, and the user can enjoy the game more easily.

Further, since the base 2 has a multi-layered three-dimensional lattice structure by the outer forming portion 21, the holding portion 24, and the layered portion 35 of the core forming portion 22, deformation that absorbs impact can be achieved, and rigidity and durability that can sufficiently withstand racket striking can be exhibited. Further, a design that can satisfactorily exert the rebound resilience against the playing surface of the racket when the badminton 1 is struck can be adopted.

The present application is not limited to the above-described embodiments, and can be variously modified. In the above-described embodiments, the size, shape, direction, and the like shown in the drawings are not limited thereto, and may be appropriately changed within a range in which the effects of the present application are exhibited. In addition, the present application can be implemented with appropriate modifications without departing from the scope of the object of the present application.

The structure of the lattice structure in which all the outer forming portions 21 and all the core forming portions 22 are three-dimensional is described for the base 2, but the present application is not limited thereto. The present application may adopt various configurations within the scope of a lattice structure in which at least a part of the core forming portion 22 is three-dimensional. As an example, a layered structure having a certain thickness is formed in which a half area is not a three-dimensional lattice structure in a plan view of the entire area or a part of the area of the outer formation portion 21. Further, as an example, a structure in which a region of a predetermined thickness surrounding the holding portion 24, which is a partial region of the core forming portion 22, is formed solid with a certain thickness, instead of a three-dimensional lattice structure, may be used.

The outer forming portion 21, the holding portion 24, and the layered portion 35 of the core forming portion 22 (hereinafter, referred to as the outer forming portion 21 or the like) constituting the multi-layered three-dimensional lattice structure are not limited to the formation of the openings 32, 34, 37 by the plurality of tapes 31. For example, the outer forming portion 21 may be formed of a layered body having a constant thickness, and a plurality of holes may be formed in the layered body in an aligned manner so as to form the openings 32, 34, 37.

The holding portion 24 may be formed in a layered shape having a predetermined thickness without forming the internal opening 37, instead of the three-dimensional lattice structure. The holding portion 24 may be a three-dimensional lattice structure in which the skirt portion 4 is fixed to the base portion 26 by bonding or the like as a structure of only the base portion 26, and the formation region of each of the housing portions 27 and 28 is changed to the core formation portion 22. The holding portion 24 may be formed in a region for holding the skirt portion 4, and may be, for example, a structure in which a small hole is formed in a visually recognized state, and a pin which is inserted into the hole and can be fixed is provided in the skirt portion 4.

The shape of each opening 32, 34, 37 may be polygonal other than triangular, or various shapes such as circular, elliptical, or polygonal with a part of the side curved. For example, the structure of the base 2 shown in fig. 5 and 6 can be exemplified. Fig. 5 is a schematic perspective view of a base in 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 2 of the modification example of fig. 5 is configured such that the outer peripheral opening 32 is formed mainly in a hexagonal shape, and other polygonal outer peripheral openings 32 such as pentagons are mixed depending on the location. The base 2 of the modification example of fig. 6 is configured such that the outer peripheral opening 32 is formed mainly in a hexagonal shape or a diamond shape, and other polygonal outer peripheral openings 32 such as pentagons are mixed depending on the location.

Industrial applicability

The present application relates to a badminton ball capable of reducing the impact of wind on play and reducing the impact of the badminton ball when the badminton ball collides with a player or a racket during flying.

The present application is based on Japanese patent application No. 2021-019785 filed on 10/2/2021. The contents of which are incorporated herein in their entirety.

Claims (7)

1. A shuttlecock comprising a base for holding a skirt, characterized in that,

the base is provided with:

a holding portion that forms a region for holding the skirt portion;

an outer forming part forming an area hit by the racket; and

a core forming portion forming a region on the inner side of the outer forming portion,

at least a part of the core forming portion is formed of a three-dimensional lattice structure.

2. The shuttlecock as claimed in claim 1, wherein the shuttlecock comprises,

at least a part of the outer forming portion is formed of a three-dimensional lattice structure.

3. The shuttlecock as claimed in claim 2, wherein,

the core forming portions and the outer forming portions are all formed of a three-dimensional lattice structure.

4. The shuttlecock as claimed in claim 2, wherein,

the three-dimensional lattice structure connects a plurality of strips three-dimensionally to form a single ventilation area in the core forming portion and the outer forming portion.

5. The shuttlecock as claimed in claim 2, wherein,

the outer forming portion includes an outer peripheral opening that can be ventilated inside and outside the base portion, and the outer peripheral opening is formed in a polygonal shape.

6. The shuttlecock as claimed in claim 1, wherein the shuttlecock comprises,

the core forming portion includes a layered portion disposed at a predetermined interval from the outer forming portion, and a plurality of inner openings capable of ventilation are formed in the layered portion.

7. The shuttlecock as claimed in claim 1, wherein the shuttlecock comprises,

the base is made of synthetic resin that is elastically deformable by the striking of the racket.