WO2012033068A1

WO2012033068A1 - Artificial shuttlecock feather and shuttlecock

Info

Publication number: WO2012033068A1
Application number: PCT/JP2011/070202
Authority: WO
Inventors: 亘米山; 謙介田中; 聖也宮▲崎▼
Original assignee: ヨネックス株式会社
Priority date: 2010-09-06
Filing date: 2011-09-06
Publication date: 2012-03-15
Also published as: US20130210564A1; EP2614863A4; JPWO2012033068A1; EP2614863A1; CN103167897A

Abstract

The artificial shuttlecock feather, which is for both weight reduction and for shape maintenance and durability, is provided with a blade that, when the hemispherical base of the shuttlecock is oriented downward, is implanted in a circle on the rim of the circular upper end surface of the base and corresponds to the vane of a natural feather, and a rod-shaped shaft that corresponds to the rachis and extends continuously in one piece from the upper tip to the lower tip. The shaft has, as a blade-supporting part, a region that is fixed to the blade from the upper tip to the lower end of the blade, while as a quill part, a region protruding below the blade from the lower end of the blade-supporting part to the lower tip is fixed to the blade at the blade-supporting part to correspond to the quill of a natural feather. A reinforcing capsule obtained from a coated resin is formed on the blade.

Description

Artificial feather for shuttlecock and shuttlecock

This invention relates to artificial feathers for badminton shuttlecocks. Specifically, the present invention relates to an improvement technique for improving weight reduction and durability of a wing part in an artificial feather. The present invention also relates to a shuttlecock using artificial feathers.

The shuttlecock for badminton uses waterfowl feathers (natural feathers) for feathers (natural shuttlecocks) and artificial feathers made of nylon resin or the like (artificial shuttles) Cook).

As is well known, a natural shuttlecock uses about 16 natural feathers such as geese and ducks, and the end of each feather shaft is planted on a hemispherical base (base) made of cork covered with leather. This is the structure. And the blade | wing currently used for the natural shuttlecock has the small specific gravity, and it is the characteristics that it is very lightweight. For example, the specific gravity is about 0.4 for the wing shaft and about 0.15 for the wing valve. In addition, the feather has high rigidity, and the natural shuttlecock provides a unique flight performance and a comfortable shot feeling.

However, the feathers that are the raw material of the natural shuttlecock are collected from the above waterfowl and do not have to be the feathers of any part of the waterfowl. Only a few feathers can be collected from a waterfowl for a shuttlecock. That is, the production amount of the blades for the natural shuttlecock is limited. In recent years, due to the epidemic of bird flu, edible geese, the main source of feathers, have been disposed of in large quantities, and natural shuttlecocks will become more difficult to procure raw materials in the future. Expected to be expensive.

On the other hand, an artificial shuttlecock is well known that has resin blades that are integrally formed in an annular shape. This artificial shuttlecock, like a natural shuttlecock, moves independently one by one. Therefore, it is difficult to obtain the same flight performance as a natural shuttlecock. Therefore, as described in

Patent Documents

1 and 2 below, artificial feathers simulating feathers have been proposed. Here, based on ornithology, each part in the natural feather is associated with each part in the artificial feather, and the feather valve of the natural feather and the part corresponding to the feather shaft are referred to as a feather part and a feather shaft part, respectively. As a part of the wing shaft, the part corresponding to the part called the wing and the stalk that protrudes from the wing valve is used to avoid confusion with the wing (splash). In the artificial feather described in Patent Document 1, the wing part has a two-layer structure in which a foam layer and a shaft fixing layer having the same surface shape are bonded, and the wing part protrudes from the wing part. In this way, the wing shaft portion is fixed between the layers. In addition, the artificial feather described in Patent Document 2 has a structure in which a protruding portion that protrudes in the extending direction of the wing shaft portion is formed at one end of the wing portion made of a nonwoven fabric, and the protruding portion is embedded in the wing shaft portion. ing.

International Publication No. 2010/074234 JP 2008-206970 A

Shuttlecock artificial feathers must have various performances such as a hit feeling and flight characteristics similar to natural feathers. In particular, since the wings occupy most of the total surface area of one artificial feather, it is most important to approximate the properties of the wings to natural feathers.

Specifically, the feathers of natural feathers used in natural shuttlecocks are a collection of relatively hard hairs (feathers) that grow one by one from the feather shaft. Due to this structure, natural feathers are thin. Although it is lightweight, it has characteristics such as moderate rigidity (shape maintenance) that does not easily deform even when the wind is cut at high speed.

Therefore, in order to make the above-described characteristics manifest in the wings of artificial feathers, it is necessary to study various conditions such as materials and structures from various perspectives. However, it is extremely difficult to satisfy all these conditions. For example, in the artificial feather described in Patent Document 1, foamed polyethylene is used for the foam layer, and the foam layer is used as a substantial wing part, and a shaft fixing layer is laminated on the entire surface of the wing part. Yes. If the foam is made into a thin film for weight reduction, the rigidity is reduced, so it must be thickened. For this reason, if the entire planar shape of the wing portion is made of foam, it is difficult to reduce the weight. Furthermore, polyethylene foam has poor adhesiveness, and therefore, in order to fix the foam layer and the shaft fixing layer in a laminated state, a double-sided adhesive tape is applied to a wide area that forms the wing portion, and the foam layer and The shaft fixing layer is bonded. Therefore, weight reduction comparable to natural feathers becomes even more difficult. Of course, if the weight increases, the balance is lost and the directionality and hairpin performance are reduced.

Since the artificial feather described in Patent Document 2 uses a non-woven fabric for its wings, it can be expected to make the wings lightweight. However, the nonwoven fabric has poor rigidity and is difficult to return to its original shape when deformed by smashing. In addition, the durability is poor. Specifically, the fibers may be unwound by the hit ball and the fibers may be scattered. If the fiber is unwound, the wings are easily damaged. Of course, there is also a problem in that the aesthetics of the product deteriorates immediately.

The present invention has been made in view of various problems in the conventional artificial feathers for shuttlecocks as described above, and the object thereof is a shuttle that is lightweight and excellent in shape maintenance, durability, and productivity. An object is to provide an artificial feather for a cock and a shuttlecock using the artificial feather.

The present invention has been made in view of the above-described problems in artificial feathers for shuttlecocks, and the main invention is to form a hemispherical base portion of the shuttlecock as a lower side and to form a ring around the periphery of the circular upper end surface of the base portion. An artificial feather for a shuttlecock to be planted,
A thin-film wing part corresponding to a feather valve, imitating natural feathers, and a rod-like wing shaft part corresponding to the wing shaft and extending continuously from the upper tip toward the lower end With
The wing shaft portion is fixed to the wing portion from the tip to the lower end of the wing portion, and the fixing region is used as a wing support portion, and the wing support portion corresponds to the wing pattern of the natural feather. A region protruding downward from the lower end of the wing portion to the lower end of the wing portion is fixed to the wing portion at the wing support portion,
In the wing portion, a reinforced film made of applied resin is formed,
This is an artificial feather for a shuttlecock characterized by that.

The artificial feather for a shuttlecock according to the present invention is lightweight and excellent in shape maintainability, and the shuttlecock using the artificial feather can be expected to have the same flight performance and feel at impact as a natural shuttle. In addition, it is possible to provide an inexpensive shuttlecock that does not depend on the production amount of the natural material and is excellent in productivity. Other effects of the present invention will be clarified in the following description.

It is a perspective view of the artificial shuttlecock using the artificial feather | wing which concerns on the fundamental Example of this invention, and is a perspective view when it sees from the base part side (downward). It is a perspective view when the artificial shuttlecock using the artificial feather | wing concerning the said basic Example is seen from upper direction. It is a perspective view for demonstrating each site | part and relative direction in the structure of the artificial feather | wing which concerns on the said basic Example, and an artificial feather | wing. It is the schematic of the artificial feather | wing concerning the 1st Example of this invention. It is a three-view figure of the artificial feather | wing concerning the said 1st Example. It is an external view of the shuttlecock using the artificial feather | wing concerning the said 1st Example. It is a figure for demonstrating the overlap of the artificial feather | wings in a shuttlecock. It is a figure for demonstrating the overlap of the artificial feathers whose front-and-back relation is reverse to the artificial feathers which concern on the said 1st Example. It is the schematic of the artificial feather provided with the structure for reinforcing the wing | wing part in the artificial feather which concerns on the said 1st Example. It is the schematic of the artificial feather from which the shape of the structure for reinforcing the said wing | blade part differs. It is an external view of the shuttlecock which concerns on the 2nd Example of this invention. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the said 2nd Example. It is an external view of the shuttlecock which concerns on the 3rd Example of this invention. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the said 3rd Example. It is an external view of the shuttlecock which concerns on the modification of the said 3rd Example. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the deformation | transformation of the said 3rd Example. It is the schematic of the artificial feather | wing which comprises the shuttlecock which concerns on the 4th Example of this invention. It is an external view when the shuttlecock which concerns on the said 4th Example is seen from the downward direction. It is an external view when the shuttlecock which concerns on the said 4th Example is seen from upper direction. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the said 4th Example. It is principal part sectional drawing of the crossing prevention structure in the shuttlecock which concerns on the said 4th Example. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the 5th Example of this invention. It is principal part sectional drawing of the crossing prevention structure in the shuttlecock which concerns on the said 5th Example. It is the schematic of the artificial feather | wing which comprises the shuttlecock which concerns on the modification of the said 5th Example. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the modification of the said 5th Example. It is principal part sectional drawing of the crossing prevention structure in the shuttlecock which concerns on the modification of the said 5th Example. It is the schematic of the crossing prevention structure in the shuttlecock using the artificial feather similar to the modification of the said 5th Example. It is the schematic of the artificial feather | wing which comprises the shuttlecock which concerns on the other modification of the said 5th Example. It is a figure for demonstrating the crossing prevention structure in the shuttlecock which concerns on the other modification of the said 5th Example. It is principal part sectional drawing of the crossing prevention structure in the shuttlecock which concerns on the other modification of the said 5th Example.

== Structure of artificial shuttlecock ===
1 and 2 are external views of an artificial shuttlecock (hereinafter referred to as a shuttlecock) 1 using an artificial feather 10 having a basic structure common to the embodiments of the present invention. FIG. 1 is a perspective view when the shuttlecock 1 is viewed from below with the base portion 2 as the bottom, and FIG. 2 is a perspective view when viewed from above. A plurality (for example, 16 pieces) of artificial feathers 10 simulating natural feathers are planted in an annular shape along the circumference of the flat upper surface of the hemispherical base portion 2 so that the diameter increases upward. In addition, the skirt portion 4 is configured by being fixed to each other by a string-like member (for example, cotton thread) 3.

Further, the artificial feathers 10 arranged in an annular shape are planted so as to regularly overlap with the adjacent artificial feathers 10. In the illustrated example, in the artificial feather 10, when the surface facing the outer side of the skirt portion 4 is a front surface and the surface facing the inner side of the skirt portion is a back surface, When attention is paid to one artificial feather 10, the front surface of the left end of the artificial feather 10 overlaps the back side of the artificial feather 10 on the left side. Of course, the front-back relationship between the adjacent artificial feathers 10 is not limited to the illustrated example, and the front surface of the right end may overlap the back side of the artificial feather 10 on the right side.

=== Characteristics of Embodiments of the Invention ===
If the use of the shuttlecock is badminton for a game level, the artificial feathers constituting the shuttlecock place importance on productivity and durability. That is, it is only necessary to be inexpensive and difficult to break. However, if you want to use it as a practice ball for athletes, and ultimately to replace it with the official ball for competition, you should make the wings that occupy most of the total surface area of artificial feathers as light as possible. It is necessary to approximate properties such as shape maintenance and durability to natural feathers.

For example, in badminton, there is a “hairpin shot” as a hitting method unique to a natural shuttlecock. In this ball hitting method, a unique flight trajectory is drawn by hitting the shuttlecock so as to float while hitting a strong rotation. In order to reproduce this flight trajectory with a shuttlecock, artificial feathers having characteristics very close to those of natural feathers are required. Of course, in view of the increase in the price of natural feathers, ease of manufacture is also required.

Therefore, the present inventors consider that the material and structure of the wings that occupy most of the artificial feathers greatly affect the performance of the shuttlecock, and in addition to being light in weight, the wings wind at high speed. It was concluded that the most important condition is that it has excellent rigidity (shape maintenance) and durability that do not easily deform even when cut. First, in order to improve the shape maintenance performance and durability without hindering the weight reduction of the wing itself, some reinforcement is applied to the thin wing.

As for the reinforcement of the wing part, for example, the wing part may be covered with a laminate film or the like. However, the specific gravity of the film itself is high (about 1.1). For example, the wing part has a typical film thickness of 20 μm. When the film is attached to one side of the part, the weight increases by about 0.01 g. Depending on the material of the wing part, an adhesion method such as heat fusion cannot be used, and the weight of the adhesive for bonding the film and the wing part is also added. Therefore, it is difficult to achieve both high strength and light weight at a high level.

Therefore, in the examples corresponding to the above main invention, by forming a resin film on the wing part, the shape maintaining property and durability of the wing part are secured without hindering the weight reduction of the wing part itself. As an embodiment corresponding to the invention other than the main invention, first, a more suitable material is defined for the wing portion and the resin coating (reinforced coating), the wing portion is made of a nonwoven fabric, and the reinforcement The film is characterized by being one of water-based polyurethane, water-based polyester, water-based polyolefin, nylon emulsion, and acrylic emulsion. Further, the weight per unit area of the reinforcing coating applied to one wing portion may be 1.8 g / m ² or more and less than 27 g / m ² .

Further, the present invention secures weight reduction, shape maintenance, and durability of the wing itself by the embodiment corresponding to the main invention, so that the wing is reinforced without a large increase in weight. And an embodiment in which a configuration for achieving excellent flight performance is added. These embodiments have the following features.

The wing portion is laminated with a reinforcing material made of foam, and the wing shaft portion is sandwiched between the wing portion and the reinforcing material at the wing support portion,
The reinforcing member has a planar shape in which an edge is missing at a portion where the wing portion overlaps with another wing portion adjacent to the shuttlecock along the planar shape of the wing portion.

Alternatively, the reinforcing member is formed with a rib that extends in a band shape toward another artificial feather adjacent to a part of the edge while the edge is missing, and further, the rib portion is the other adjacent It faces the artificial feather and extends obliquely upward from a part of the edge.

A shuttlecock using artificial feathers having any of the above characteristics is also an embodiment of the present invention. And in artificial feathers with wings composed of surfaces, when a “cross” occurs that reverses the front / back relationship between adjacent wings at the time of hitting, the original front / back relationship can be restored even when the ball is subsequently hit. It is difficult and the flight trajectory becomes unstable. That is, in natural feathers, the feathers are not membrane-like, but are a collection of hair bodies called feathers that grow from the wing shaft, so even if a crossing occurs, Since it passes between the wings, it can easily return from the crossed state to the original state while continuing to hit the ball.

Therefore, the embodiment of the present invention extends to a shuttlecock provided with means for preventing the intersection. The shuttlecock has any of the following features.

Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
The wing portion is formed with a notch that extends in the vertical direction and communicates the front and back of the artificial feather, and a band-like binding member continuously penetrates the notch of each artificial feather. On the other hand, the front and back relationship of the overlap between the adjacent wings is fixed by fixing both ends to each other and forming an annular shape.

Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
In the wing part, string-shaped binding members are continuously passed through the artificial feathers that are planted in an annular shape from the back surface toward the front surface, so that the adjacent wing parts The front / back relationship of the overlap between each other is fixed.

Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
Protruding portions are provided on one edge portion of the wing portion in the left-right direction, and in a region where the wing portion is formed, an area facing the protruding portion of the artificial feather adjacent to the other direction in the left-right direction A notch is formed through the
In each artificial feather, the protrusions of the artificial feathers adjacent to each other in the other direction are inserted into the cut portions of the artificial feathers, so that the overlapping relationship between the adjacent artificial feathers is fixed.

And the said notch part consists of two spaced apart in parallel, and the said protrusion part is return | folded, being guided to the front surface from the back surface by one notch part of the artificial feather adjacent to one direction. Then, it is inserted into the other notch, and the tip of the projection is fixed in a state of being superimposed on the extension of the projection.

Alternatively, in the shuttlecock using the artificial feather provided with the above-described protrusion on the wing, the protrusion is formed in a substantially L shape that is bent downward while protruding in one of the left and right directions,
The cut portion formed in each artificial feather is formed of two pieces that are substantially parallel in the vertical direction while extending in the left-right direction,
The protrusions of each artificial feather are inserted into the lower notch part from the front side to the back side while being guided from the back side to the upper notch part of the artificial feather adjacent in the one direction. Being
thing.

The protruding portion is formed in a substantially T-shape that is continuous with a tongue piece that branches in two upper and lower directions while protruding in one of the left and right directions,
The cut portion formed in each artificial feather is formed of two pieces that are substantially parallel in the vertical direction while extending in the left-right direction,
The protrusion of each artificial feather is bent downward while the upper tongue piece is guided from the back to the front surface of the artificial feather adjacent to the one direction in the one direction and bent downward. The tongue piece is bent upward while being guided from the back surface to the front cut surface of the artificial feather adjacent to the one direction.
The tips of the two tongue pieces of the protrusion are fixed in a state of being overlapped with each other.
It can also be characterized.

=== Basic structure of artificial feather ===
FIG. 3 shows an artificial feather 10 having a structure common to the embodiments of the present invention. The artificial feather 10 employs a structure in which a rod-shaped wing shaft portion 20 is fixed to a thin film wing portion 12 by adhesion or injection molding. Furthermore, the artificial feather 10 of the present embodiment has a surface of the thin wing 12 made of a nonwoven fabric or a resin molded product in order to achieve both contradictory properties such as weight reduction and shape maintenance and durability, that is, Regardless of the front and back of the film-like wing part 12, the surface layer has a structure in which a reinforced film formed by applying a resin is formed. That is, unlike the film material that is coated with an adhesive, the reinforcing coating in this embodiment is formed on the surface of the wing 12 by applying a resin dissolved in a solvent and then volatilizing the solvent. . And the reinforcement | strengthening film formed in this way is naturally lighter than a film, and very thin. For reference, Table 1 below shows the characteristics of various resins used as the reinforcing coating.

In Table 1, each resin has a weight increase of 0.05 g due to lamination on the original wing part 12 and is 9 g / m ² when converted to a weight increase per unit area. It is assumed that the film thickness and the concentration with respect to the solvent during the coating process are adjusted. Various coating methods such as a dip method, a spray method, and a roll coating method can be employed for forming the reinforced film.

Table 1 shows the breaking strength (N) and the breaking elongation (%) as relative values when the wing portion 12 having no reinforcing coating is taken as 1. As shown in Table 1, it was confirmed that the breaking strength (N) and the breaking elongation (%) were both improved by providing the reinforced coating except for some exceptions. In particular, it was found that aqueous polyurethane is excellent in cutting strength (N) and cutting elongation (%). Since the aqueous polyurethane does not use an organic solvent, it can be expected to reduce the environmental load when the artificial feather 10 is manufactured. In addition, as a reinforcement | strengthening film, it is estimated that not only water-based polyurethane but the water-based polyester, water-based polyolefin, nylon emulsion, and acrylic emulsion which have the physical property similar to the said water-based polyurethane are applicable.

Also, by using a nonwoven fabric for the wings 12, it can be expected that a reinforcing coating is coated on the surface of each fiber constituting the nonwoven fabric, the rigidity of the fiber itself is improved, and excellent shape maintenance performance is exhibited. The wing shaft portion 20 needs to have impact resistance and rigidity that can withstand an impact at the time of hitting the ball while supporting the wing portion 12 and maintaining the shape of the artificial feather 10 as a whole. Polyamide (nylon), those reinforced with glass fibers (glass fiber reinforced polyamide), or various resins such as PBT, ABS, and PC can be used.

=== Direction / positional relationship in artificial feather and name of each part ===
First, regarding the artificial feather 10 according to the embodiment of the present invention, the vertical and horizontal directions and the front / back relation of the artificial feather 10 based on the names of various parts and the state attached to the base portion 2 of the shuttlecock 1 are defined. Here, based on FIG. 3, the name of each part, each direction, and front-back relation are prescribed | regulated.

In FIG. 3, the wing shaft portion 20 extends downward from the upper end of the wing portion 12. For convenience, the upper end 21 of the wing shaft portion 20 is referred to as a “tip” and the lower end 22 is referred to as a “terminal end”. In each part of the artificial feather 10 such as the wing shaft 20 or the like, the surface facing the outside of the shuttlecock 1 is referred to as “front surface” 13, and the surface facing the inside of the shuttlecock 1 is referred to as “back surface” 14. To. Further, in the plane of the wing portion 12, when the direction perpendicular to the extending direction of the wing shaft portion 20 is defined as the left-right direction, and the above-described top and bottom are defined, the left and right are defined as viewed from the front surface 13 side. Therefore, in the illustrated example, the wing shaft portion 20 is fixed to the back surface 14 of the wing portion 12 in a protruding state. Further, in the shuttlecock 1 shown in FIG. 1 and FIG. 2, the lower surface of the artificial feather 10 has a base portion 2 and the left side edge portion 13 of the artificial feather 10 on the right side as viewed from the outside. It overlaps with the back surface 14 side of the right side edge portion.

For the wing shaft portion 20, a region fixed to the wing portion 12 is a wing support portion 23, and a region protruding below the wing portion 12 is a wing handle portion 24. In the example shown in FIG. 3, the position of the tip 21 of the wing shaft part 20 substantially coincides with the position of the upper end of the wing part 12, but the tip 21 of the wing shaft part 20 is at the upper end of the wing part 12. On the other hand, it may be below. The artificial feather 10 in the shuttlecock 1 shown in FIGS. 1 and 2 has a structure in which the wing shaft portion 20 is fixed to the back surface 14 of the wing portion 12, but the wing shaft 20 is attached to the front surface 13 of the wing portion 12. The structure to which the axial part 20 adheres may be sufficient. In the following, the above-described crossing is prevented in the embodiment provided with a configuration for further enhancing the durability and rigidity of the artificial feather 10 according to the basic embodiment of the present invention and in the shuttlecock 1. Specific examples according to the structure and the like will be given.

=== First Embodiment ===
In contrast to the artificial feather 10 having a structure common to the embodiments of the present invention, the first embodiment of the present invention is an artificial feather having a configuration for further enhancing durability and rigidity. 4 and 5 show the structure of the artificial feather 10a according to the first embodiment of the present invention. FIG. 4 is a perspective view of the artificial feather 10a according to the first embodiment when viewed from the upper front surface 13, and FIGS. 5A, 5B, and 5C are respectively the artificial artificial feather 10a. 2 is a plan view of the front surface 13 of the blade 10a, a plan view of the back surface 14, and a front view of the artificial blade 10a when viewed from the tip 21 side of the blade shaft portion 20. FIG. In the artificial feather 10a according to the first embodiment, the above-described reinforcing coating film is formed on the thin-film wing portion 12, and the reinforcing material 15 made of a foam (such as foamed polyethylene) is provided on the wing portion 12. In the laminated state, it is bonded with an adhesive or a double-sided adhesive tape. The wing shaft portion 20 is fixed in a state of being sandwiched between the wing portion 12 and the reinforcing material 15.

In addition, as a manufacturing method of the artificial feather 10a according to the first embodiment, for example, the wing part 12 wing shaft part 20 or the reinforcing material 15 and the wing shaft part are continuously injection-molded by two-color molding or insert molding. After that, the wing part 12 and the reinforcing material 15 were further laminated by fixing the wing part 12 and the reinforcing material 15 to each other and holding the wing shaft part 20 between the layers by two-color molding or insert molding. You may form in a molded article. After the wing part 12 and the wing shaft part 20 are injection-molded as an integral molded product, the reinforcing material may be laminated by adhering to the wing part 12 with an adhesive or a double-sided adhesive tape. The reinforcing coating may be formed on the surface of the wing part 12 before injection molding, or may be formed on the way to molding the appearance of the artificial feather 10a or after molding. In any case, at least the wing portion 12 is formed with a reinforcing coating, and is fixed in a state where the wing shaft portion 20 is sandwiched between the wing portion 12 and the reinforcing material 15. What is necessary is just to set it as the artificial feather 10a which has the external appearance shape where the wing shaft part 20 is not exposed outside.

In the first embodiment shown here, as the base material of the wing portion 12, a non-woven fabric that is light and thin and can reproduce a planar shape approximated to a feather valve in natural feathers by simply cutting is used. Is formed by forming a reinforced film made of aqueous polyurethane on the nonwoven fabric. Thereby, the wing portion 12 is expected to have a high rigidity improvement effect. Moreover, the problem specific to nonwoven fabrics, which unwinds the nonwoven fabric fibers when hitting, is also solved. In the first embodiment, the laminated structure of the wing portion 12 and the reinforcing material 15 made of foam does not greatly reduce the weight reduction, and even when the wing portion 12 is hit hard at the time of hitting, the impact is surely absorbed. Thus, the wing 12 can be prevented from being damaged.

However, the feature of the artificial feather 10a of the first embodiment is not in such a laminated structure of the wing part 12 and the reinforcing material 15 by the foam, but in a laminated shape of the wing part 12 and the reinforcing material 15. is there. Specifically, the reinforcing material 15 is not laminated uniformly in conformity with the planar shape of the wing part 12, but when the artificial feathers 10a adjacent to each other overlap each other in the shuttlecock, the other artificial feather The edge overlapping the inner side with respect to the wing portion 12 of 10a is lacking. Thereby, the weight of the reinforcing member 15 can be reduced as compared with the case where the reinforcing member 15 is laminated on the entire surface of the wing portion 12. FIG. 6 shows an external view of the shuttlecock 1a using the artificial feather 10a in the first embodiment. In this example, the reinforcing material 15 is laminated on the front side of the wing part 12.

Further, in the artificial feather 10a according to the first embodiment, the characteristic laminated shape of the wing part 12 and the reinforcing material 15 has durability and impact with respect to the single wing part 12 without significantly impairing weight reduction. Absorbability can be dramatically improved, and the flight performance and flight trajectory can be more closely approximated to natural feathers. The performance of the shuttlecock using the artificial feather 10a of the first embodiment will be described below.

FIG. 7 is a schematic view showing a state of overlapping between adjacent artificial feathers (10a, 10b). FIG. 7A shows an overlapping state of the artificial feathers 10b with respect to the shuttlecock using the artificial feather 10b in which the reinforcing material 15 is laminated on the entire surface of the wing portion 12, and (B ) Shows an overlapping state of the artificial feathers 10a in the shuttlecock 1a using the artificial feather 10a in the first embodiment. FIG. 7 shows the state of the artificial feathers (10a, 10b) when the shuttlecock is viewed from above.

Here, between the adjacent artificial feathers (10a, 10b), the overlapping portion is the overlapping region 30, and the non-overlapping portion is the single region 40. In the overlapping region 30, the adjacent artificial feathers (10a, 10b) 10b), if the artificial feathers (10a, 10b) arranged on the inner side of the shuttlecock are the “inner” artificial feathers (10a, 10b), the surface of the wing part 12 shown in FIG. In the shuttlecock using the artificial feather 10b in which the reinforcing material 15 is laminated over the entire surface, the total thickness of the edge portions of the two artificial feathers 10b in the overlapping region 30 is twice the thickness in the single region 40. It becomes. And the reinforcing material 15 is thick compared with the wing | blade part 12, and the difference of the thickness of the duplication area | region 30 and the independent area | region 40 becomes quite large compared with a natural shuttlecock. That is, in the natural shuttlecock, since the wing portion is composed of only the thin wings in the overlapping region 30, the difference in thickness between the single region 40 and the overlapping region 30 is small, and the thickness of the skirt portion 4 is small. It is almost continuous and uniform. However, in the shuttlecock using the artificial feather 10b shown in FIG. 7A, the reinforcing material 15 is laminated on the entire surface of the wing portion 12 and the thickness is uniform for each artificial feather 10b. In part 4, the discontinuity of the thickness becomes prominent, and there is a possibility that it will deviate from the flight performance and flight trajectory of the natural shuttlecock.

On the other hand, in the shuttlecock 1a using the artificial feather 10a in the first embodiment shown in (B), the total thickness of the edge portions of the two inner and outer artificial feathers 10a in the overlapping region 30 is the single region 40. The thickness is almost the same. To be exact, the thickness of the thin wing portion 12 can be reduced. Thereby, in the shuttlecock 1a using the artificial feather 10a of the first embodiment, in each artificial feather 10a, there are a thin place where only the wing portion 12 is present and a thick place where the reinforcing material 15 is laminated. However, the skirt portion 4 has the same overall thickness, and the skirt portion 4 does not have a discontinuous thickness. Thereby, it can be expected to approximate the flight performance and flight trajectory of the natural shuttlecock.

Of course, regarding the front / back relationship in the artificial feather 10a, the reinforcing material 15 may be arranged on the front surface 13 side, or the wing part 12 may be arranged on the front surface 13 side. FIG. 8 shows an artificial feather 10c in which the wing portion 12 is disposed on the front surface 13 side and the reinforcing material 15 is disposed on the back surface 14 side. FIG. 8 shows a state in which the adjacent artificial feathers 10c overlap each other when the shuttlecock is viewed from above. 8A shows a state in which the portion where the reinforcing material is not laminated on the wing portion 12 overlaps the inside in the overlapping region 30, and FIG. 8B shows the wing portion in the overlapping region 30. 12 shows a state in which the portion where the reinforcing material is laminated overlaps the inside.

Incidentally, in the artificial feather 10a in which the reinforcing member 15 is arranged on the front surface 13 side as shown in FIG. 7B, the wing part 12 is not directly hit when hitting. Certainly, in the configuration using a non-woven fabric for the wing part 12, the fiber is difficult to unwind due to the reinforcing coating, but by arranging the reinforcing material 15 on the front surface 13 side, it is almost completely possible to unwind the fiber. Can be prevented. Moreover, even if the base material of the wing part 12 is not a non-woven fabric, the impact material at the time of hitting the ball is directly applied to the wing part 12 by arranging the reinforcing material 15 made of a foam excellent in shock absorption on the front surface 13 side. Since it is not added, the damage of the wing | blade part 12 can also be prevented reliably.

On the other hand, in the artificial feather 10c in which the wing portion 12 is arranged on the front side shown in FIG. 8, the reinforcing material 15 is arranged on the back surface 14 side and laminated with the laminated portion of the reinforcing material 15 and the wing portion 12. It is aesthetically pleasing because the step with the unexposed part is not visible from the outside of the shuttlecock. Further, in contrast to the shuttlecock 1a using the artificial feather 10a whose reinforcing material 15 is on the front surface 13 side, the shuttlecock using the artificial feather 10c whose reinforcing material 15 is on the back surface 14 side is unlikely to cross. It can be said.

Specifically, as indicated by the white arrow in FIG. 8, in the overlapping region 30, the portion where the reinforcing material 15 is not laminated in the wing portion 12 is bent to the front surface 13 side when hitting. Try to. The wing 12 moves not only in the front and back direction but also in the left and right directions when hitting a ball. In the example shown in FIG. 8A, the edge portion 15e of the reinforcing member 15 in the overlapping region 30 is a wing. In the example shown in FIG. 8B, the space between the wing portions 12 in the overlap region 30 is opened in the example shown in FIG. As a result, intersections are less likely to occur. In any case, the front / back relationship of the artificial feather 10a may be appropriately determined according to the requirements for the shuttlecock as a product, such as aesthetics, durability, and possibility of occurrence of crossing.

<Weight of reinforced coating>
As described above, in the artificial feather 10 in which the reinforcing film is formed on the wing part 12, it was confirmed that both the cutting strength and the cutting elongation of the wing part 12 were improved. The shuttlecock using the artificial feather (10a, 10c) in which the reinforcing material 15 is cut out in the overlapping region while laminating the reinforcing material 15 on the wing portion 12 further improves the durability without deteriorating the flight performance. You can expect

Therefore, next, we examined the conditions for improving both durability and flight performance. Specifically, if a large amount of resin that becomes a reinforcing film is used for the artificial feathers (10, 10a, 10c) in order to improve the durability, the weight of the artificial feathers (10, 10a, 10c) alone increases, and the flight Performance may be degraded. On the other hand, if the amount of resin is reduced in order to reduce the weight of the artificial feathers (10, 10a, 10c), the durability deteriorates. Accordingly, various nonwoven fabrics having different weights per unit area of the applied aqueous polyurethane were prepared, and the cutting strength and cutting elongation of each nonwoven fabric were measured. Moreover, while using the various nonwoven fabrics for the wing part 12, the artificial feather 10c in which the reinforcing material 15 is laminated on the back surface 14 side of the wing part 12 is manufactured, and the artificial feather 10c is arranged as shown in FIG. Thus, a shuttlecock was manufactured. Then, the durability of the artificial feather 10c and the flight performance of the shuttlecock were evaluated by actually hitting the shuttlecock. That is, in this evaluation method, the shuttlecock with the wings 12 exposed on the front surface 13 side is hit, and durability and flight performance are evaluated under conditions where the artificial feather 10c is more easily damaged. .

In terms of durability, two badminton athletes who will be the monitors will hit 100 times alternately, with a total of 200 hits, in a way called high clear that is likely to damage the wings 12, Then, it evaluated by visually inspecting whether the feather | wing part 12 had fluff.

In addition, flight performance can be controlled so that five badminton athletes who will be monitors will hit various shuttlecocks with different artificial feather structures by well-known hairpin shots so that the monitor will have the intended flight trajectory. We had you evaluate according to whether or not. Specifically, a shuttlecock using artificial feathers without a reinforcing coating is set to a reference value = 3, and control is not possible = 1, somewhat difficult to control = 2, equivalent = 3, and subject to subjective evaluation. The average score of 5 people was taken as the evaluation result.

Table 2 shows the evaluation results of the cutting strength and cutting elongation of the blade 12 alone with respect to the weight per unit area (g / m ² ) of the reinforced coating, and durability and flight performance of the shuttlecock. Table 3 shows the evaluation of the flight performance of various shuttlecocks each of the five monitors.

Table 2 shows an artificial feather in which the reinforcing film is not formed on the wing part 12 as sample a, and eight kinds of artificial feathers having different resin coating amounts (g / m ² ) per unit area as samples b to As i, the cutting strength (N) and cutting elongation (%) for each sample a to i, and the flight performance and durability evaluation results for the shuttlecock made using the samples a to i are shown. Yes. For overall evaluation of flight performance, the average evaluation score by the five monitors A to E shown in Table 3 is 1.0 or more and less than 1.5, and “x”, and 1.5 or more and less than 2.5. Is “Δ”, and 2.5 to 3 is “◯”. The judgment of pass / fail is acceptable if it is practical, “Δ” is a flight performance that is not a problem as a practice ball, and “◯” is a flight performance that can be used for competition. Therefore, from Table 2, the shuttlecock using the artificial feather 10c in which the reinforcing film 15 is laminated on the back surface 14 while applying a reinforcing coating of 1.8 g / m ² or more does not generate fuzz and has good durability. It was found that if the coating amount was less than 27.0 g / m ² , the flight performance would be at a level with no practical problem.

<Reinforcement of wings in overlapping areas>
By the way, in the wing part 12, when there is a concern about insufficient strength in the portion where the reinforcing material 15 is not laminated, the reinforcing material 15 is simply formed by cutting out the left and right edges of the outline of the wing part 12. Instead, it is also conceivable that a part of the cut-out edge is extended in a strip shape toward another adjacent artificial feather 10 and the extended portion functions as a rib for supporting the film-like wing 12. FIG. 9 shows an artificial feather 10d having a structure in which a reinforcing member 15 having a rib 15r is laminated on the wing portion 12. FIG. 9 shows a state in which the array of adjacent artificial feathers 10d in the shuttlecock is viewed from the front surface 13 side or the back surface 14 side. As shown in the figure, the artificial feather 10d has two ribs 15r. However, the number may be one or three or more. In any case, the thickness and number of the ribs 15r may be set in consideration of the deterioration in flight performance due to the discontinuity of the thickness in the overlapping region and the strength of the wing portion 12.

In addition, as shown in FIG. 9, if each artificial feather 10d is arranged so that the surface layer of the rib 15r faces the surface layer of the adjacent artificial feather 10d, that is, the rib 15r is on the front surface 13 side. For example, if each artificial feather 10d is arranged on the back surface 14 side of the adjacent artificial feather 10d in the overlapping area 30 and the rib 15r is on the back surface 14, the front surface 13 side of the adjacent artificial feather 10d in the overlapping area 30 If the two artificial feathers 10d adjacent to each other in the overlapping region 30 are in contact with each other, there is a step between the surface of the rib 15r and the surface of the wing part 12, and the shuttlecock flies to the overlapping region 30. A space through which air flows is formed. That is, the shuttlecock is not obstructed by the air flow during flight, and the possibility of drawing an irregular trajectory is reduced.

Furthermore, it is possible to positively generate an air flow from the lower side to the upper side by using a step in the overlapping region formed by the rib 15r. FIG. 10 illustrates an artificial feather 10e in which the shape of the rib 15r is devised. In this example, a strip-shaped rib 15r extends obliquely from below to above from the cutout edge of the reinforcing member 15 toward the adjacent artificial feather 10e. As a result, the air from below smoothly flows obliquely upward along the shape of the rib 15r as indicated by the white arrow in the figure, so that the air flow is not obstructed and the shuttlecock rotates. Force to be generated is generated, and a natural trajectory that approximates a natural shuttlecock is drawn.

=== Second Embodiment ===
As described above, in the shuttlecock, when an “intersection” occurs, it is difficult for the intersection to naturally return to the original state. Therefore, as a second embodiment of the present invention, a shuttlecock having a structure in which crossing hardly occurs is given. FIG. 11 shows a state when the shuttlecock 1b according to the second embodiment of the present invention is viewed obliquely from below. FIG. 12 shows a partially enlarged view when the shuttlecock 1b shown in FIG. 11 is viewed from above. The shuttlecock 1b includes the artificial feather 10c shown in FIG. 8, that is, the artificial feather 10c in which the reinforcing material 15 is laminated on the back surface 14 side. Further, in this example, in the overlapping region 30, the region where the reinforcing material 15 is not laminated is disposed so as to be exposed on the front surface 13. As shown in FIGS. 11 and 12, the string-like binding member 60 circulates the skirt portion 4 of the shuttlecock 1b while penetrating each artificial feather 10c. In addition, what is necessary is just to fix the both ends of the binding member 60 suitably by mutually bonding or adhere | attaching. Thus, in the shuttlecock 1b according to the second embodiment, the binding member 60 is interposed between the two artificial feathers 10c adjacent to each other in the overlapping region 30, and the occurrence of the intersection can be suppressed. Yes. Moreover, since the reinforcing film is formed on the wing portion 12 of each artificial feather 10c, even if a strong impact is applied to the artificial feather 10c by hitting the shuttlecock 1c, the thin string-like binding member 60 penetrates. The wings 12 are not torn from the starting point. Further, since the string-like binding member 60 is not wound around the wing shaft portion 20, the wing shaft portion 20 is not broken with the winding portion as a fulcrum.

In addition, when fixing both ends of the binding member 60, it can be considered that the both ends are tied to the wing shaft part 20 from the viewpoint of ease of work, but even in such a case, the binding member Since the binding member 60 is not wound around the wing shaft portion 20 other than the wing shaft portion 20 to which the end portion of the tie 60 is bound, the wing shaft portion 20 to which the end portion of the tying member 60 is bound can also move freely. Can do. Therefore, even when both ends of the binding member 60 are tied to the wing shaft portion 20, the wing shaft portion 20 is not broken. In other words, the structure in which the portion around which the binding member 60 is wound does not exist in the wing shaft portion 20 of the artificial feather 10c adjacent to the artificial feather 10c in which the binding member 60 is bound to the wing shaft portion 20 is achieved. It can be said that the problem that the wing shaft part 20 around which both ends of the member 60 are wound does not break.

=== Third embodiment ===
In the second embodiment, in order to prevent crossing, the string-like binding member 60 circulates around the skirt portion 4 while penetrating the artificial feather 10c. In the third embodiment of the present invention, the shuttlecock is provided with another structure for preventing the intersection. FIG. 13 shows a state when the shuttlecock 1c according to the third embodiment of the present invention is viewed obliquely from above. FIG. 14 shows a part of a cross section when the shuttlecock is cut along the alternate long and short dash line 100 in FIG. The shuttlecock 1 c includes an artificial feather 10 f in which a reinforcing material 15 is laminated on the wing portion 12. Here, like the artificial feather 10a shown in FIG. 6, the shuttlecock 1c including the artificial feather 10f in which the reinforcing material 15 is laminated on the front surface 13 side is shown.

In the third embodiment, each artificial feather 10f is formed with a notch 50 that extends in the vertical direction and communicates with the front and back in an area where the reinforcing material 15 is not laminated in the wing 12. And while the strip | belt-shaped binding member 61 circulates the skirt part 4 of the shuttlecock 1c, penetrating the notch part 50, both ends of the binding member 61 are suitably used, such as adhesion | attachment using heat welding or an adhesive agent. It is fixed by various methods to form an annular shape.

Specifically, the binding member 61 penetrates from the back surface 14 of the inner artificial feather 10f to the front surface 13 side by the notch 50 in the overlapping region 30 between the adjacent artificial feathers 10f. And the binding member 61 penetrates the notch 50 of the artificial feather 10c adjacent to the inner artificial feather 10c. Thereby, the binding member 61 continuously penetrates the overlapping region 30 in each artificial feather 10f and binds the adjacent artificial feathers 10f.

In the third embodiment, even if the inner or outer artificial feather 10f in the overlapping region 30 is urged inward of the shuttlecock 1d by the hitting ball and the intersection is likely to occur, the bundling member 61 continues. Since each artificial feather 10f is penetrated, it is difficult for crossing to occur. For example, in FIG. 14, when the inner artificial feather 10f-1 in a certain overlapping region 30-1 is biased in the direction of the arrow F1, the binding member 61 is inserted into the cut portion 50-1 of the inner artificial feather 10f-1. Is pierced with friction, the binding member 61 is pulled in the direction of the arrow F1, and as a result, the binding member 61 is pulled in the direction of the arrow F2. Since the binding member 61 also penetrates through the notch 50-2 of the outer artificial feather 10f-2 with friction, the outer artificial feather 10f-2 passes through the notch 50 in the direction of the arrow F2. The power of. The artificial feather 10f-2 is biased in the direction of rotation in the direction of the arrow F3 about the wing shaft 20 because the wing shaft 20 is attached to the base 2. As a result, in the overlapping region 30, the inner artificial feather 10f-1 and the outer artificial feather 10f-2 are urged away from each other, and the occurrence of a crossing can be almost certainly prevented. Further, when the outer artificial feather 10f-2 is urged in the direction of arrow F4, the outer artificial feather 10f-2 comes into contact with the inner artificial feather 10f-1 in the overlapping region 30, and the inner artificial feather 10f-2 is in contact with the inner artificial feather 10f-1. Since 10f-1 is urged in the direction of the arrow F1, it is possible to prevent crossing in the same way.

In the third embodiment, the binding member 61 is guided to the front surface 13 side in the overlapping region 30, and the binding member 60 is hardly visible from the outside of the shuttlecock 1c. Therefore, there is also an advantage that the appearance on the exterior is not greatly impaired. As the binding member 61, an appropriate material such as a resin film or a fiber material can be adopted as long as the material has a small specific gravity. In this example, the same nonwoven fabric as the wing part 12 is used as the binding member 61. And by using the same material as the wing part 12, it has succeeded in giving the external appearance a uniform feeling and having the external appearance approximated by the natural shuttlecock. Of course, a reinforcing film may also be applied to the binding member 61.

<Modification>
FIG. 15 is a schematic view of a shuttlecock 1d according to a modification of the third embodiment, and shows a state when the shuttlecock 1d is viewed obliquely from below. FIG. 16 shows a part of a cross section when the shuttlecock 1d is cut along the one-dot chain line 101 in FIG. As shown in these drawings, in the modification, the cut portion 50 is formed in the laminated portion of the reinforcing member 15 and the wing portion 12. Further, the cut portion 50 is in the single region 40 on the right side with respect to the wing shaft portion 20. That is, the bundling member 61 is guided from the back surface 14 toward the front surface 13 through the notch 50 of a certain artificial feather 10 g and then crosses the wing shaft portion 20 at the front surface 13. . And it reaches the back surface 14 of the adjacent artificial feather 10g, and is similarly guided to the front surface 13 of the adjacent artificial feather 10g through the notch 50.

In this modified example, in the overlapping region 30, the back surface 14 of the outer artificial feather 10 g has a band-shaped binding member 61 having a width extending from the notch 50 to the right end 16. The front surface 13 of the artificial feather 10g does not enter the back surface 14 side of the inner artificial feather 10g from the left end 17 of the inner artificial feather 10g. That is, the occurrence of intersection can be prevented.

=== Fourth embodiment ===
The shuttlecock according to the fourth embodiment of the present invention is characterized by a structure for preventing a tolerance as in the second and third embodiments. FIG. 17 shows a schematic view of the artificial feather 10h used in the shuttlecock according to the fourth embodiment. 17 (A) and 17 (B) are plan views of the front surface 13 and the back surface 14 of the artificial feather 10h, respectively. Here, the reinforcing material 15 made of foam on the front surface 13 side of the wing 12 is shown. An example in which is stacked is shown. FIGS. 18 and 19 are external views of the shuttlecock 1e in the fourth embodiment. FIG. 18 is a perspective view when the shuttlecock 1e is viewed from below, and FIG. 19 is a perspective view when viewed from above.

As shown in FIG. 17, the artificial feather 10h used in the shuttlecock 1e according to the fourth embodiment has a reinforcing member 15 having a shape in which the left edge as viewed from the front surface 13 is cut off. 12 is a structure laminated on the front surface 13 side, and a substantially L-shaped projection 70 is formed on the left edge of the wing 12 that protrudes leftward from the top and then bends downward. Has been. And in the overlap area | region 30, the projection part 70 is arrange | positioned at the back surface 14 side of the other artificial feather | wing 10h in the left.

Further, in the overlapping region 30 on the right side of each artificial feather 10h, two cut portions (81, 82) extending in the left and right directions and being parallel in the vertical direction are formed. In the illustrated example, the cut portions (81, 82) penetrate both the wing portion 12 and the reinforcing member 15 in the laminated state. As shown in FIGS. 18 and 19, in the shuttlecock 1e according to the fourth embodiment, the protrusions 70 of the artificial feathers 10h are formed in the notches (81, 82) of the adjacent artificial feather 10h. By being plugged in, crossing is prevented.

FIG. 20 shows an explanatory diagram of the crossing prevention function by the protrusion 70 and the notches (81, 82) between the adjacent artificial feathers 10h. FIG. 20A is a diagram when the overlapping state of adjacent artificial feathers 10h is viewed from the front surface 13, and FIG. 20B is a diagram when viewed from the back surface. FIG. 21 shows a cross section taken along the line aa in FIG. As shown in FIGS. 20 and 21, when attention is paid to a certain artificial feather 10h-1, the protrusion 70 of the artificial feather 10h-1 is a notch 81 above the artificial feather 10h-2 adjacent to the left. Are guided from the back surface 14 to the front surface 13, and are further inserted into the lower cut portion 82 from the front surface 13 to the back surface 14 side. As a result, the front-back relationship between adjacent artificial feathers (10h-1, 10h-2) is fixed.

The fourth embodiment is not limited to the above-described example. For example, the cut portion is formed by a single piece extending in the vertical direction, and the protruding portion has a shape protruding leftward, and the protruding portion is cut. A crossing prevention structure is also conceivable, in which it is inserted into the insertion part. In consideration of the possibility that the protruding part will come out of the notch part when hitting the ball, the two notch parts extending in the vertical direction are formed in parallel in the left-right direction, and the front face from the back surface to the right notch part Then, it may be inserted into the left-side cut portion so that the tip of the protrusion protrudes to the back side of the adjacent artificial feather.

In any case, in the shuttlecock according to the fourth embodiment, in the overlapping area with the adjacent artificial feather, the protrusions formed on the left and right edges of the wing are adjacent to the front surface side. It is characterized in that the crossing is prevented by the structure inserted into the cut portion of the artificial feather.

=== Fifth embodiment ===
In the shuttlecock 1e according to the fourth embodiment described above, the shape of the wing portion 12 itself has a crossing prevention structure. Therefore, as in the second and third embodiments, it is necessary to use a string-like or belt-like restraining member (60, 61), or to fix both ends of the binding member (60, 61) and to form an annular shape. There is no. Therefore, as compared with the second and third embodiments, the cost required for the restraining members (60, 61) can be reduced. On the other hand, since the protrusion 70 is inserted into the notches (81, 82) to prevent crossing, the protrusion 70 inserted at the time of hitting the ball is detached from the notches (81, 82). It cannot be said that there is no possibility. Therefore, as a fifth embodiment, a shuttlecock provided with a structure in which the protrusion 70 does not come out of the notch.

FIG. 22 shows a schematic diagram of the crossing prevention function in the shuttlecock according to the fifth embodiment. In the fifth embodiment, the same artificial feather 10h as in the fourth embodiment is used, and FIG. 22 shows an overlapping state of adjacent artificial feathers 10h when viewed from the back surface 14. FIG. 23 is a cross-sectional view taken along the line bb in FIG. In the fifth embodiment, as in the fourth embodiment, the tip 70a of the protrusion 70 is inserted into the upper cut portion 81 and guided from the back surface 14 to the front surface 13, and then the lower cut. It is guided from the part 82 to the back surface 14 side. However, in the fifth embodiment, the tip 70a of the projection 70 protruding downward from the lower cut portion 82 is bent upward, and the tip 70a side and the base end 70b side of the projection 70 are laminated. It is fixed in the state.

The protrusion 70 may be inserted through the lower cut portion 82 after being first inserted through the lower cut portion 82. In this case, the tip 70a of the protrusion 70 is laminated on the front surface 13 side of the base end 70b. Further, in the fourth and fifth embodiments, the crossing prevention structure has been described by taking the artificial feather 10h in which the reinforcing material 15 is laminated on the front surface 13 side, but the front and back of the wing portion 12 and the reinforcing material 15 are described. The relationship may be reversed.

<Modification>
In the fifth embodiment, the distal end 70a side and the proximal end 70b side of the L-shaped projection 70 inserted through the two cut portions (81, 82) are fixed. It is not restricted to this example. Below, some modified examples of the fifth embodiment in which the shape of the protrusion, the formation position and the formation direction of the cut portion are different will be described.

FIG. 24 shows a modification of the fifth embodiment. FIG. 24 shows the artificial feather 10i in which the reinforcing material 15 is laminated on the back surface 14. FIG. 24 (A) shows a plan view when viewed from the front surface 13 side, and FIG. The top view when it sees from the back surface 14 side was shown. A straight protrusion 71 extending in the left-right direction is formed with the edge of the wing portion 12 where the reinforcing material 15 is not laminated as a base end 71b. Further, in the laminated region of the wing portion 12 and the reinforcing material 15, the cut portions (83, 84) extending in the vertical direction are formed on the right side and the left side of the wing shaft portion 20 so as to be parallel to the left and right, respectively. Has been.

FIG. 25 shows a schematic diagram of the crossing prevention function in the shuttlecock according to the modification. FIG. 25A is a diagram when the overlapping state of adjacent artificial feathers 10i is viewed from the front surface 13, and FIG. 25B is a view when the overlapping state of the artificial feathers 10i is viewed from the back surface 14. The figure is shown. FIG. 26A is a cross-sectional view taken along the line cc in FIG. In the illustrated example, the tip 71 a of the protrusion 71 is inserted into the left cut portion 83 and guided from the back surface 14 to the front surface 13, and then inserted into the right cut portion 84. 71 a is guided from the front surface 13 to the back surface 14. Further, the tip 71a of the protrusion 71 protruding from the right cut portion 84 is bent leftward, and the tip 71a side and the base end 71b side of the protrusion 71 are fixed in a stacked state.

As shown in FIG. 26 (B), the protrusion 71 is inserted into the left cut portion 83 after the tip 71a is first inserted into the right cut portion 84, and the tip 71a. The base end 71b may be fixed in a stacked state. In addition, as shown in FIG. 27, the vertical formation positions of the protrusion 71 and the notches (83, 84) are changed, and the protrusion 70 and the notches (83, 83) are changed by the adjacent artificial feathers (10j-10j). 84) may be reversed. Thereby, when the adjacent artificial feather 10j moves in the left-right direction when hitting the ball, the force applied in the left-right direction is generated at different vertical positions, so that the force is dispersed and the tip 71a of the protrusion 71 fixed to each other and the base The possibility that the end 71b is separated or the protrusion 71 is broken is reduced.

<Other variations>
FIG. 28 is a schematic view of an artificial feather 10k used in a shuttlecock according to another modification of the fifth embodiment. FIGS. 28A and 28B are plan views of the front surface 13 and the back surface 14 of the artificial feather 10k, respectively. Also in this figure, a reinforcing material 15 made of foam is laminated on the wing portion 12. Here, an example in which the reinforcing material 15 is laminated on the front surface 13 side is shown. As shown in FIG. 28, in the other modified example of the fifth embodiment, the shape of the protrusion 72 in each artificial feather 10k is not substantially L-shaped or linear, but protrudes to the left and up and down 2 The tongue piece (72a, 72b) branched in the direction is formed in a substantially T-shape that is continuous. The notches (85, 86) are formed of two pieces that extend in the left-right direction and are substantially parallel in the vertical direction, as in the fourth embodiment.

29 and 30 show an outline of the crossing prevention function by the artificial feather 10k in another modification of the fifth embodiment. FIG. 29A is a diagram when the overlapping state of adjacent artificial feathers 10k is viewed from the front surface 13, and FIG. 29B is a diagram when viewed from the back surface. 30 is a cross-sectional view taken along the line dd in FIG. 29 and 30, when attention is paid to a certain artificial feather 10k-1, the protrusion 72 of the artificial feather 10k-1 has an upper tongue piece 72a cut above the artificial feather 10k-2 adjacent in the left direction. The guide 85 is bent downward while being guided from the back surface 14 to the front surface 13. The lower tongue piece 72b is bent upward while being guided from the back surface 14 to the front surface 13 by the lower notch 86 of the artificial feather 10k-2 adjacent in the same left direction. Furthermore, the front-end | tip parts 73 of the two tongue pieces (72a, 72b) of the protrusion part 72 are being fixed in the state where it mutually overlapped.

=== About the second to fifth embodiments ===
In the shuttlecocks (1b to 1d) of the second and third embodiments, a thin string-like or wide band-like binding member 60 is passed through the wings 12 of the artificial feathers (10c, 10d, 10e, 10f). Crossing is prevented by the structure. In the fourth and fifth embodiments, the protrusions (70 to 72) are inserted into the notches (81 to 86) formed in the wing part 12, thereby preventing the occurrence of crossing. In the second to fifth embodiments, the basic structure of the artificial feather 10 shown as the first embodiment, which is a structure in which a reinforced film is formed on the wing portion 12, is used. Even if the hitting ball is repeated with the member 60 penetrating, or the band-like binding member 61 and the projections (70 to 72) penetrating through the notches (50, 81 to 86), the string-like The wing part 12 is cut off from the end point of the portion through which the binding member 60 penetrates, the cut-out part (50, 81 to 86) through which the band-like binding member 61 and the protrusions (70 to 72) penetrate. It will not be. In other words, by forming the reinforcing film on the wing part 12, a crossing prevention structure using the binding members (60, 61) and the protrusions (70 to 72) is realized.

In the second embodiment, the string-like bundling member 60 penetrates the wing part 12 at a point, whereas in the third to fifth embodiments, the band-like bundling member 61 and the protrusion (70). To 72) are inserted into linear cut portions (50, 81 to 86) formed in the wing portion 12 to prevent crossing. Therefore, in the third to fifth embodiments, the wing portion 12 does not twist due to the wing portion 12 rotating around the point by hitting the shuttlecock, and the string-like binding member 60 When using, there is very little possibility of a specific crossing.

Specifically, in the string-like bundling member 60, if the circumferential position is far away from the upper end of the wing part 12, when the upper end of the wing part 12 moves greatly upon hitting a ball, the penetrating position of the bundling member 60 Then, even if no intersection occurs, the problem arises that the upper part of the wing part 12 is twisted and the intersection occurs above the wing part 12. For example, when the string-like binding member 60 is used in a shuttlecock using artificial feathers imitating natural feathers, generally, the circumferential position of the string-like binding member 60 is within 18 mm from the upper end of the wing part 12. Otherwise, crossing due to twisting and twisting of the wing part 12 is likely to occur. On the other hand, in the shuttlecocks (1c, 1d, 10e, 10f) of the third and fourth embodiments and the shuttlecock according to the fifth embodiment, the belt-like binding member 61 and the wide protrusions (61, 70) are used. 72) penetrates the wing part 12 of each artificial feather (10c to 10k) with a line, and supports the wing part 12 on the surface. Thereby, the crossing resulting from the twist of the wing | blade part 12 can be prevented almost certainly.

On the other hand, when the crossing is prevented by the string-like bundling member 60 as in the second embodiment, each artificial feather 10c constituting the shuttlecock 1b is supported by a point. Since the artificial feather 10c can move freely to some extent, the flight performance is superior to a shuttlecock having a cross-preventing structure using a band-like binding member 61 and protrusions (70 to 72). Of course, as compared with the conventional shuttlecock in which the string-like bundling member circulates while winding the wing shaft portion 20, the shuttlecocks according to the second to fifth embodiments have individual wing portions 12 moving. Easy and high flight performance is definitely improved.

Further, when the string-like binding member is wound around the wing shaft portion 20, there is a possibility that the wing shaft portion 20 breaks with the thin string serving as a fulcrum when the shuttlecock is struck. In the second embodiment, Since the string-like binding member 60 only penetrates the front and back of the wing part 12, there is no possibility of that. In the third embodiment, since the band-shaped binding member 61 having a wide width supports the wing shaft portion 20 with a line, the impact is dispersed and the wing shaft portion 20 hardly breaks due to the binding member 60. In the fourth and fifth embodiments, since the projections (70 to 72) do not cross the wing shaft portion 20, the wing shaft portion 20 is broken in principle due to the projection portions (70 to 72). Does not occur.

The present invention can be applied to a badminton shuttlecock.

1, 1a, 1c, 1d Shuttle cock, 2 base part, 3 string-like member, 4 skirt part, 10, 10a-10k artificial feather, 12 feather parts, 13 front face, 14 back face, 15 reinforcement, 20 feathers Shaft part, 30 overlapping area, 40 single area, 50 notch part, 60 string-like binding member, 61 band-like binding member, 70-72 protruding part, 72a, 72b T-shaped protruding part tongue piece, 81, 85 Upper notch, 82, 86 Lower notch, 83 Left notch, 84 Right notch

Claims

An artificial feather for a shuttlecock that is planted in an annular shape on the periphery of the circular upper end surface of the base portion, with the hemispherical base portion of the shuttlecock as the bottom,
A thin-film wing part corresponding to a feather valve, imitating natural feathers, and a rod-like wing shaft part corresponding to the wing shaft and extending continuously from the upper tip toward the lower end With
The wing shaft portion is fixed to the wing portion from the tip to the lower end of the wing portion, and the fixing region is used as a wing support portion, and the wing support portion corresponds to the wing pattern of the natural feather. A region protruding downward from the lower end of the wing portion to the lower end of the wing portion is fixed to the wing portion at the wing support portion,
In the wing portion, a reinforced film made of applied resin is formed,
An artificial feather for a shuttlecock characterized by that.
2. The shuttlecock artificial feather according to claim 1, wherein the wing portion is made of a nonwoven fabric, and the reinforcing coating is any one of water-based polyurethane, water-based polyester, water-based polyolefin, nylon emulsion, and acrylic emulsion.
The shuttlecock artificial body according to claim 2, wherein a weight per unit area of the reinforcing coating applied to one wing portion is 1.8 g / m 2 or more and less than 27 g / m 2. Feathers.
In claim 1, the wing portion is laminated with a reinforcing material made of foam, and the wing shaft portion is sandwiched between the wing portion and the reinforcing material at the wing support portion,
The reinforcing member has a planar shape in which an edge is cut off in a portion where the wing portion overlaps with another wing portion adjacent to the shuttlecock while following the planar shape of the region where the wing portion is formed. ing,
An artificial feather for a shuttlecock characterized by that.
In claim 1, the wing portion is laminated with a reinforcing material made of foam, and the wing shaft portion is sandwiched between the wing portion and the reinforcing material at the wing support portion,
The reinforcing material follows the planar shape of the region where the wings are formed, and the edge where the wings overlap with the other wings adjacent by the shuttlecock is missing an edge, It has a planar shape in which ribs extending in a strip shape toward other artificial feathers adjacent to the part are formed,
An artificial feather for a shuttlecock characterized by that.
6. The artificial feather for a shuttlecock according to claim 5, wherein the rib faces the other adjacent artificial feather and extends obliquely upward from a part of the edge.
A shuttlecock comprising the artificial feather according to claim 1.
In claim 7,
Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
The wing portion is formed with a notch that extends in the vertical direction and communicates the front and back of the artificial feather, and a band-like binding member continuously penetrates the notch of each artificial feather. On the other hand, the shuttlecock characterized by the fact that both ends are fixed and formed into an annular shape so that the front and back relationship of the overlap between the adjacent wings is fixed.
In claim 7,
Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
In the wing part, string-shaped binding members are continuously passed through the artificial feathers that are planted in an annular shape from the back surface toward the front surface, so that the adjacent wing parts A shuttlecock, wherein the front and back relation of the overlap between each other is fixed.
In claim 7,
Each artificial feather is annularly planted in the base portion, with the circumferential direction of the ring being the left-right direction, and either the left or right edge of the wing portion is in the one direction It overlaps with the wings back side of other artificial feathers adjacent to
Protruding portions are provided on one edge portion of the wing portion in the left-right direction, and in a region where the wing portion is formed, an area facing the protruding portion of the artificial feather adjacent to the other direction in the left-right direction A notch is formed through the
As for each artificial feather, the protrusions of the artificial feathers adjacent in the other direction are inserted into their notches, so that the front and back relationship of the overlap between the adjacent artificial feathers is fixed.
A shuttlecock characterized by that.
In Claim 10, The said notch part consists of two spaced apart in parallel, and the said protrusion part is guided to the front surface from the back surface by one notch part of the artificial feather adjacent to one direction. The shuttlecock, which is folded back and inserted into the other notch, is fixed in a state where the tip of the protrusion is overlapped with the extension of the protrusion.
In claim 10,
The protrusion is formed in a substantially L shape that is bent downward while protruding in one of the left and right directions,
The cut portion formed in each artificial feather is formed of two pieces that are substantially parallel in the vertical direction while extending in the left-right direction,
The protrusions of each artificial feather are inserted into the lower notch part from the front side to the back side while being guided from the back side to the upper notch part of the artificial feather adjacent in the one direction. Being
A shuttlecock characterized by that.
In claim 10,
The protruding portion is formed in a substantially T-shape that is continuous with a tongue piece that branches in two upper and lower directions while protruding in one of the left and right directions,
The cut portion formed in each artificial feather is formed of two pieces that are substantially parallel in the vertical direction while extending in the left-right direction,
The protrusion of each artificial feather is bent downward while the upper tongue piece is guided from the back to the front surface of the artificial feather adjacent to the one direction in the one direction and bent downward. The tongue piece is bent upward while being guided from the back surface to the front cut surface of the artificial feather adjacent to the one direction.
The tips of the two tongue pieces of the protrusion are fixed in a state of being overlapped with each other.
A shuttlecock characterized by that.