WO2010038657A1

WO2010038657A1 - Shuttlecock for badminton and base for shuttlecock

Info

Publication number: WO2010038657A1
Application number: PCT/JP2009/066594
Authority: WO
Inventors: 聡吉田; 雅央小川; 隆外村; 寿優竹中
Original assignee: 美津濃株式会社; ミズノテクニクス株式会社
Priority date: 2008-09-30
Filing date: 2009-09-25
Publication date: 2010-04-08
Also published as: JP2010082160A; CN102164641A

Abstract

A base for a shuttlecock having sufficient durability and a shuttlecock. The base (2) for a shuttlecock comprises a fixing surface section (the surface of the base (2) in which insertion holes (63) are formed) to which the shafts (7) of the artificial feathers for the shuttlecock are secured. The plurality of insertion holes (63) for inserting and affixing the shafts (7) therein and a projection (61) which is adjacent to the insertion holes (63) and which projects from the surface of the fixing surface section are formed in and on the fixing surface section.

Description

Badminton shuttlecock and shuttlecock base body

The present invention relates to a shuttlecock for badminton and a base body for shuttlecock, and more particularly to a shuttlecock for badminton and a base body for shuttlecock that exhibit high durability.

Conventionally, as badminton shuttlecocks, there are known ones using waterfowl feathers (natural shuttlecocks) and those using artificially manufactured feathers made of nylon resin (artificial shuttlecocks). Yes. Artificial shuttlecocks include a skirt-like integral molded product whose blades are made of resin or the like, and an artificial shuttlecock using a plurality of independent artificial feathers like a natural shuttlecock.

In both the natural shuttlecock and the artificial shuttlecock, the waterfowl blades or artificial blades (hereinafter also referred to as blades) arranged in an annular shape are fixed to the hemispherical base body.

However, when the shuttlecock is used in a badminton game or the like, the strength of the fixing portion between the base body and the blades is reduced by slamming the shuttlecock, and the angle of the blade shaft with respect to the surface of the base body changes. There was a thing. In this case, there arises a problem that the shape of the shuttlecock collapses (for example, the sectional shape of the arrangement of the blades arranged in an annular shape becomes an elliptical shape). When the shape of the shuttlecock collapses as described above, there are problems that the flight characteristics (for example, flight distance and flight trajectory) are adversely affected, and the shot feeling of the shuttlecock is deteriorated.

In the past, various proposals have been made to solve such problems. For example, in Japanese Utility Model Publication No. 4-25771 (Patent Document 1), in order to increase the strength of the joint portion between the base body and the blade, the portion of the base body where the root of the blade is fixed is replaced with a reinforcing body such as a synthetic resin. A proposed structure has been proposed. In Japanese Utility Model Publication No. 40-6177 (Patent Document 2), a natural cork is disposed on the side where the blade is fixed as a base body, and an artificial cork (natural cork powder and special adhesive is used on the hemispherical tip side. By inserting the blade into the base body so that the end of the blade base (the side inserted and fixed to the base body) reaches the artificial cork A structure has been proposed in which the blade is securely fixed to the base body. In Japanese Patent Publication No. 29-4312 (patent document 3), although the purpose is different, a disk base made of synthetic resin and the like and having blades bonded thereto is prepared, and the disk base is bonded to a hollow sphere. It constitutes the base body. In Japanese Utility Model Publication No. 35-19921 (Patent Document 4), a protrusion is formed at the base of an artificial blade to prevent the blade from falling off from the base body, and the inside of the blade arranged in an annular shape. It has been proposed that two stationary rings are arranged on the peripheral side to connect blades arranged in an annular shape to prevent wobble.

Japanese Utility Model Publication No. 4-25771 Japanese Utility Model Publication No. 40-6177 Japanese Patent Publication No. 29-4312 Japanese Utility Model Publication No. 35-19921

However, the conventional base body-blade joint described above basically forms a hole in the flat surface of the base body (or a member connected to the base body), and inserts and fixes the root of the blade into the hole. It is to do. In the case of such a configuration, an adhesive member such as an adhesive is further applied to the upper part of the hole with the blade base inserted in the hole. However, when the shuttlecock is struck and a large force is applied to the blade, the blade shaft is bent, and the adhesive is peeled off. As a result, the strength of the joint between the blade and the base body is reduced. It was. As a result, there is a problem that sufficient durability cannot be obtained for the shuttlecock.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a shuttlecock base body and a shuttlecock capable of obtaining sufficient durability. is there.

A shuttlecock base body according to the present invention is a shuttlecock base body provided with a fixing surface portion for fixing a blade shaft, and the shaft of the shuttlecock blade is inserted and fixed to the fixing surface portion. For this purpose, a plurality of insertion holes and a convex portion that is adjacent to the insertion hole and protrudes from the surface of the fixing surface portion are formed.

In this way, when the adhesive member is arranged with the shaft inserted into the insertion hole, the adhesive member extends from the inside of the insertion hole to the convex portion adjacent to the insertion hole (that is, adjacent to the shaft). be able to. For this reason, compared with the case where a convex part does not exist, while the area of the adhesion surface of an adhesion member and a base body can be enlarged, the shape of an adhesion surface turns into a three-dimensional shape. For this reason, the adhesive strength between the adhesive member, the base body, and the blade shaft can be improved. As a result, the durability of the shuttlecock to which the base body is applied can be improved.

A base body for a shuttlecock according to the present invention is a base body for a shuttlecock provided with a fixing surface portion that fixes a shaft of a blade, and the fixing surface portion includes a concave portion having a circumferential shape in plan view, A plurality of insertion holes for inserting and fixing the shaft of the shuttlecock blade are arranged circumferentially adjacent to the side wall of the recess.

In this way, when the adhesive member is arranged to fix the shaft to the base body with the shaft inserted into the insertion hole, the insertion member is adjacent to the insertion hole from the inside of the insertion hole (that is, to the shaft inserted into the insertion hole). The adhesive member can be extended to the side wall of the recess that is adjacent. For this reason, the area of the bonding surface between the bonding member and the base body can be increased as compared with the case where the insertion hole is simply formed in the plane. Furthermore, since the shape of the bonding surface is a three-dimensional shape, the bonding strength between the shaft and the base body can be improved.

A shuttlecock for badminton according to the present invention includes the above-described shuttlecock base body and shuttlecock blades having shafts inserted and fixed in a plurality of insertion holes formed in the fixing surface portion of the base body.

In this way, when the shuttlecock blade is used, when a stress is applied to the shuttlecock blade from the outside, the convex portion can be used as a reinforcing portion that supports the shaft of the shuttlecock blade. For this reason, the shuttlecock excellent in durability is realizable.

In the badminton shuttlecock, the shuttlecock blade may be an artificial feather including a wing portion and a shaft connected to the wing portion. The shaft may include a fixed shaft portion and a wing shaft portion connected to the fixed shaft portion. The member which comprises a wing | blade part may contain the wing | blade main-body part which contacts the fixed axis | shaft part and is wider than the fixed | fixed shaft part, and the protrusion part which protrudes from a wing | blade main body part to a wing axis | shaft part. The end of the protruding part opposite to the wing body part side may be embedded in a member constituting the wing shaft part.

In this case, since the wing body portion is in contact with and fixed to the fixed shaft portion, and the protruding portion of the member constituting the wing portion is embedded in the member constituting the wing shaft portion, the bonding strength between the wing portion and the shaft Can be increased. Moreover, since the protrusion part of the member which comprises a wing | blade part is embed | buried in the wing shaft part, the said embed | buried protrusion part acts as a reinforcement member of a wing shaft part. Therefore, it is possible to sufficiently enhance the durability of the joint portion between the wing body portion and the wing shaft portion and the wing shaft portion. Moreover, since the wing body part also acts as a reinforcing member for the fixed shaft part, the durability of the fixed shaft part can also be improved. For this reason, a shuttlecock can be comprised using the artificial feather for shuttlecocks which has high durability. In addition, the shaft of the artificial feather is often inferior in strength to the shaft of the natural shuttlecock blade, but the durability of the shaft of the artificial feather is improved by using the convex part of the base body as a reinforcing member. Can be made. That is, the base body of the present invention is particularly effective in a shuttlecock using artificial feathers.

Thus, according to the present invention, it is possible to obtain a badminton shuttlecock excellent in durability and a shuttlecock base body constituting the shuttlecock.

It is a perspective schematic diagram which shows Embodiment 1 of the shuttlecock by this invention. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in the shuttlecock shown in FIG. It is an expansion perspective schematic diagram which shows the connection part of the base main body and artificial feather | wing shown in FIG. FIG. 4 is a schematic plan view showing an embodiment of an artificial feather for a shuttlecock according to the present invention, which constitutes the shuttlecock shown in FIGS. 1 to 3. FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 4. FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 4. FIG. 5 is a schematic sectional view taken along line VII-VII in FIG. 4. FIG. 5 is a schematic sectional view taken along line VIII-VIII in FIG. 4. It is a photograph which shows the external appearance of the lower end part of the wing shaft part of the artificial feather for shuttlecocks shown in FIG. It is a photograph which shows the external appearance of the center part of the wing shaft part of the artificial feather for shuttlecocks shown in FIG. It is a photograph which shows the external appearance of the front-end | tip part of the wing shaft part of the artificial feather for shuttlecocks shown in FIG. It is a flowchart for demonstrating the manufacturing method of the artificial feather | wing shown in FIG. FIG. 4 is a flowchart for explaining a method of manufacturing the shuttlecock 1 shown in FIGS. 1 to 3. FIG. It is a schematic diagram for demonstrating the intermediate process in the manufacturing method of the artificial feather shown in FIG. FIG. 15 is a schematic cross-sectional view taken along line XV-XV in FIG. 14. FIG. 13 is a schematic cross-sectional view taken along line XVI-XVI in FIG. 12. FIG. 15 is a schematic cross-sectional view taken along line XVII-XVII in FIG. 14. It is a perspective schematic diagram which shows the modification of Embodiment 1 of the shuttlecock according to this invention. FIG. 20 is a schematic plan view showing a modification of the first embodiment of the artificial feather for a shuttlecock according to the present invention, which constitutes the shuttlecock shown in FIG. 18. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a plane schematic diagram which shows the other modification of the artificial feather | wing 3 which comprises the shuttlecock 1. FIG. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in Embodiment 2 of the shuttlecock by this invention. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in Embodiment 3 of the shuttlecock by this invention. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in Embodiment 4 of the shuttlecock by this invention. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in Embodiment 5 of the shuttlecock by this invention. It is a partial schematic diagram for demonstrating the connection part of the base main body and artificial feather | wing in Embodiment 6 of the shuttlecock by this invention. It is a plane schematic diagram which shows the structure of the artificial feather for shuttlecocks which comprises the artificial feather in Embodiment 7 of the shuttlecock by this invention. FIG. 34 is a schematic sectional view taken along line XXXIV-XXXIV in FIG. 33. FIG. 34 is a schematic cross-sectional view taken along line XXXV-XXXV in FIG. 33. FIG. 34 is a schematic sectional view taken along line XXXVI-XXXVI in FIG. 33. FIG. 34 is a schematic cross-sectional view taken along line XXXVII-XXXVII in FIG. 33. FIG. 38 is a flowchart for explaining a method of manufacturing the shuttlecock artificial feather 3 shown in FIGS. 33 to 37. FIG. It is a side surface schematic diagram which shows Embodiment 8 of the shuttlecock by this invention. FIG. 40 is a schematic top view of the shuttlecock shown in FIG. 39. FIG. 40 is a partial schematic cross-sectional view showing a configuration of a portion where a middle thread of the shuttlecock shown in FIG. 39 is arranged. It is a side surface schematic diagram which shows Embodiment 9 of the shuttlecock by this invention. FIG. 43 is a partial cross-sectional schematic view showing a fusion fixing part of the shuttlecock shown in FIG. 42. FIG. 44 is a partial schematic cross-sectional view showing a modification of the ninth embodiment of the shuttlecock according to the present invention shown in FIGS. 42 and 43. FIG. 44 is a schematic side view showing another modification of the ninth embodiment of the shuttlecock according to the present invention shown in FIGS. 42 and 43. It is a top schematic diagram of the shuttlecock shown in FIG. It is a schematic diagram for demonstrating the modification of the fusion fixing part in Embodiment 9 of the shuttlecock by this invention shown in FIG.42 and FIG.43. It is a schematic diagram for demonstrating the modification of the fusion fixing part in Embodiment 9 of the shuttlecock by this invention shown in FIG.42 and FIG.43. It is a schematic diagram for demonstrating the modification of the fusion fixing part in Embodiment 9 of the shuttlecock by this invention shown in FIG.42 and FIG.43. It is a schematic diagram for demonstrating the modification of the fusion fixing part in Embodiment 9 of the shuttlecock by this invention shown in FIG.42 and FIG.43. It is a schematic diagram for demonstrating the modification of the fusion fixing part in Embodiment 9 of the shuttlecock by this invention shown in FIG.42 and FIG.43. It is a side surface schematic diagram which shows Embodiment 10 of the shuttlecock by this invention. FIG. 53 is a partial schematic cross-sectional view showing an adhesive fixing portion fixed by an adhesive member of the shuttlecock shown in FIG. 52. It is a side surface schematic diagram which shows Embodiment 11 of the shuttlecock according to this invention. FIG. 55 is a schematic top view of the shuttlecock shown in FIG. 54. FIG. 57 is a partial schematic cross-sectional view showing a configuration of a portion where an inner thread of the shuttlecock shown in FIG. 54 is arranged. FIG. 56 is a schematic side view showing a modification of the eleventh embodiment of the shuttlecock according to the present invention shown in FIGS. 54 and 55. FIG. 58 is a partial schematic cross-sectional view showing a configuration of a portion where an outer thread of the shuttlecock shown in FIG. 57 is installed. It is a side surface schematic diagram which shows Embodiment 12 of the shuttlecock by this invention. 60 is a schematic side view showing a modification of the twelfth embodiment of the shuttlecock shown in FIG. 59. FIG. FIG. 61 is a partial schematic cross-sectional view illustrating a configuration of a portion where a fixing thread of the shuttlecock illustrated in FIG. 60 is disposed. It is a top schematic diagram which shows Embodiment 13 of the shuttlecock by this invention. FIG. 63 is a schematic plan view showing the configuration of an artificial feather for shuttlecock that constitutes the shuttlecock shown in FIG. 62. FIG. 63 is a schematic top view showing a modification of the thirteenth embodiment of the shuttlecock according to the present invention shown in FIG. 62.

Next, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

(Embodiment 1)
A first embodiment of a shuttlecock according to the present invention will be described with reference to FIGS.

1 to 3, a shuttlecock 1 according to the present invention includes a hemispherical base body 2 and a plurality of shuttles connected to a fixing surface portion on which a convex portion 61 of the base body 2 is formed. It consists of a cock artificial feather 3 and a fixing string-like member for fixing a plurality of artificial feathers 3 to each other. A plurality (for example, 16 pieces) of artificial feathers 3 are arranged in an annular shape on the outer peripheral portion of the convex portion 61 in the fixing surface portion of the base body 2. The plurality of artificial feathers 3 are fixed to each other by a string-like member. As the plurality of artificial feathers 3 move away from the base body 2, the distance between them increases (the inner diameter of the cylindrical portion formed by the plurality of artificial feathers 3 increases as the distance from the base body 2 increases). Has been placed.

In the base body 2, as shown in FIG. 2, a convex portion 61 is formed on the fixing surface portion. The planar shape of the convex portion 61 is substantially circular (circular along the arrangement of the insertion hole 63 into which the axis of the artificial feather 3 is inserted). Further, the side wall 62 of the convex portion 61 is inclined with respect to the surface at the outer peripheral portion of the fixing surface portion (that is, the width of the convex portion 61 increases as the distance from the outer peripheral surface of the fixing surface portion increases. The side wall 62 is in a reverse bank state so that the

An insertion hole 63 for inserting the shaft 7 of the artificial feather 3 is formed in the outer peripheral portion of the convex portion 61 of the base body 2 as shown in FIGS. The insertion hole 63 is formed to extend in a direction along the extending direction of the side wall 62 of the convex portion 61. With the shaft 7 inserted into the insertion hole 63, an adhesive 64 is applied as shown in FIG. As shown in FIG. 2, the adhesive 64 extends from the end portion of the upper surface of the convex portion 61 to the outer peripheral surface of the fixing surface portion via the side wall 62 and also contacts the shaft 7. Be placed. The shaft 7 of the artificial feather 3 is firmly fixed to the base body 2 by the adhesive 64.

That is, the base body 2 according to the present invention is a shuttlecock base body having a fixing surface portion for fixing the shaft 7 of the artificial feather 3, and is a fixing surface portion (upper surface of the base body 2 in FIG. 2). Are formed with a plurality of insertion holes 63 for inserting and fixing the shaft 7 of the artificial feather 3 which is a shuttlecock blade, and a convex portion 61 which is adjacent to the insertion hole 63 and protrudes from the surface of the fixing surface portion. Has been. In this way, when the adhesive is disposed with the shaft 7 inserted into the insertion hole 63, the inside of the insertion hole 63 extends onto the convex portion 61 adjacent to the insertion hole 63 (that is, adjacent to the shaft 7). The adhesive can be extended. For this reason, compared with the case where the convex part 61 does not exist, while the area of the adhesive surface of an adhesive agent and the base main body 2 can be enlarged, the shape of an adhesive surface becomes a three-dimensional shape. For this reason, the adhesive strength between the adhesive 64 and the base body 2 and the shaft 7 of the artificial feather 3 can be improved.

Embodiments of the shuttlecock and the shuttlecock artificial feather according to the present invention will be described with reference to FIGS.

Referring to FIGS. 4 to 11, the artificial feather 3 constituting the shuttlecock 1 shown in FIGS. 1 to 3 includes a wing body part 5 and a shaft 7 connected to the wing body part 5. The shaft 7 includes a wing shaft portion 8 disposed so as to protrude from the wing body portion 5, and a fixed shaft portion 10 connected to the wing body portion 5 at a substantially central portion of the wing body portion 5. The wing shaft portion 8 and the fixed shaft portion 10 are arranged so as to extend on the same line and constitute one continuous shaft 7.

The wing body portion 5 is connected to a protruding portion 12 held in a state of being embedded in the wing shaft portion 8. The wing body portion 5 and the protruding portion 12 constitute one sheet-like member 9.

As shown in FIG. 5, the shaft 7 extends from the root (the right end in FIG. 5 or the end opposite to the side connected to the fixed shaft 10 in the wing shaft 8) to the tip (the left end in FIG. 5). Or the diameter of the fixed shaft portion 10 gradually decreases toward the end of the fixed shaft portion 10 opposite to the side connected to the blade shaft portion 8. Also, as shown in FIGS. 6 to 8, the cross-sectional shape in the direction intersecting (orthogonal to) the extending direction of the shaft 7 is a quadrangle, more specifically a rhombus. The cross-sectional shape of the shaft 7 is not limited to the quadrangular shape as described above, and any shape can be adopted. For example, as the cross-sectional shape of the shaft 7, the length in the direction (vertical direction in FIG. 6) intersecting the extending direction of the sheet-like member 9 is in the extending direction (lateral direction in FIG. 6) of the sheet-like member 9. An elliptical shape that is longer than the length can also be employed.

In the shaft 7, as shown in FIGS. 5, 6, and 9, the sheet-like member 9 is embedded in the shaft 7 on the base side of the shaft 7 (the sheet-like member 9 is inside the shaft 7. In FIG. 7, FIG. 8, FIG. 10, and FIG. 11, the sheet-like member 9 is pivoted toward the tip end side of the shaft 7 as it is embedded in an arcuate cross section. 7 is exposed (the sheet-like member 9 is in contact with and fixed to the surface of the shaft 7). The photographs shown in FIGS. 9 to 11 were taken using an optical microscope, and the magnification is 10 times.

As shown in FIGS. 5 to 11, the sheet-like member 9 is arranged on the shaft 7 such that the sheet-like member 9 is embedded in the shaft 7 on the base side of the shaft 7, and the central portion and the tip portion of the shaft 7 are arranged. It is not limited to the case where the sheet-like member 9 is exposed on the surface of the shaft 7 on the side, and may take other forms. For example, the sheet-like member 9 is embedded inside the shaft 7 at the base side and the center of the shaft 7, while the sheet-like member 9 is exposed on the surface of the shaft 7 at the tip end side of the shaft 7. It may be. Alternatively, the sheet-like member 9 may be embedded in the shaft 7 in all the portions on the base side, the center portion, and the tip end side of the shaft 7.

Next, a method for manufacturing the shuttlecock 1, the artificial feather 3 for the shuttlecock and the base body 2 for the shuttlecock shown in FIGS. 1 to 3 will be described with reference to FIGS.

First, with reference to FIG. 12, the manufacturing method of the artificial feather | wing 3 for shuttlecocks according to this invention is demonstrated. As shown in FIG. 12, in the manufacturing method of the artificial feather 3, a nonwoven fabric preparation process (S10) is first implemented. The non-woven fabric prepared in this step (S10) corresponds to the sheet-like member 9 shown in FIG. 14, and is prepared in a planar shape as shown in FIG. 14 (generally rectangular shape with rounded four corners). To do. The thickness of the nonwoven fabric can be appropriately selected in consideration of the air resistance and mass balance of the artificial feather 3 to be formed. Moreover, as a nonwoven fabric, the nonwoven fabric which consists of chemical fibers, such as a polyester fiber and an acrylic fiber, can be used. For example, a nonwoven fabric having a basis weight of 10 g / m ² or more and 90 g / m ² or less can be used. Further, for example, a nonwoven fabric made of polyester fiber having a basis weight of 30 g / m ^{2 to} 80 g / m ² and a thickness of 0.07 mm to 0.13 mm can be used. The nonwoven fabric made of polyester fiber preferably has a basis weight of 40 g / m ^{2 to} 60 g / m ² , a thickness of 0.08 mm to 0.12 mm, and more preferably a basis weight of 40 g / m ^{2 to} 50 g / m ^2. In the following, a thickness of 0.09 mm to 0.11 mm may be used. Further, instead of the nonwoven fabric, natural fibers such as silk fabric and cotton, cellulose fibers (so-called paper), and those coated with resin or the like may be used. Further, a resin film (thickness: 50 to 100 μm) such as a polyamide resin film, a polyester resin film, or a PET film can be used instead of the nonwoven fabric. Furthermore, what formed the coating layer on the surface of the arbitrary nonwoven fabrics mentioned above as a nonwoven fabric can be used. As a method for forming the coating layer, for example, a method of laminating a resin film on a nonwoven fabric (coextrusion molding) can be used. Moreover, coating layers, such as a resin film, may be formed in the single side | surface of a nonwoven fabric, and may be formed in both surfaces. Further, the coating layer may be partially formed on one side or both sides.

Next, a step (S20) of arranging the nonwoven fabric inside the mold is performed. In this step (S20), the non-woven fabric prepared in the step (S10) described above is placed inside a mold for forming the shaft 7 by using, for example, an injection molding method.

Next, a mold setting step (S30) is performed. Specifically, the mold in which the nonwoven fabric is arranged is arranged in a state in which the resin constituting the shaft 7 can be injected, and the temperature condition of the mold is adjusted.

Next, a resin injection step (S40) is performed. Specifically, resin is injected into the mold from a resin injection port provided in the mold. As a result, the shaft 7 as shown in FIG. 14 is formed in a state of being in contact with and adhering to the sheet-like member 9 made of a nonwoven fabric inside the mold.

Next, a post-processing step (S50) is performed. Specifically, the sheet-like member 9 to which the shaft 7 is connected and fixed is taken out from the inside of the mold. At this time, the cross sections of the sheet-like member 9 and the shaft 7 are as shown in FIGS. That is, the shaft 7 is connected to the sheet-like member 9 over almost the entire length thereof. As shown in FIG. 15, the sheet-like member 9 is embedded inside the shaft 7 on the base side of the shaft 7 (the end portion on the lower side of FIG. 14). On the other hand, as shown in FIGS. 16 and 17, the sheet-like member 9 is exposed on the surface of the shaft 7 toward the tip end side (the upper end side in FIG. 14) of the shaft 7. On the tip side, as shown in FIGS. 16 and 17, the sheet-like member 9 is fixed to the surface of the shaft 7. Such a configuration can be realized by the shape of a groove for forming the shaft 7 inside the mold, the arrangement of a nonwoven fabric as the sheet-like member 9, and the like.

In the post-processing step (S50), unnecessary parts (parts other than the part 6 to be the wing body part) of the sheet-like member 9 shown in FIG. 14 are cut and removed. As a result, the artificial feather 3 as shown in FIG. 4 can be obtained.

Next, a method for manufacturing the shuttlecock 1 shown in FIGS. 1 to 3 will be described with reference to FIG. As shown in FIG. 13, a preparatory process (S100) is first implemented. In this preparation step (S100), constituent members of the shuttlecock 1 such as the base body 2 (tip member) and the artificial feather 3 of the shuttlecock 1 are prepared.

Although any conventionally known method can be used as the method for manufacturing the base body 2, for example, when an artificial resin is used as a material to be the base body 2, a block of the base body 2 is prepared and cut. The approximate shape. At this time, processing is performed in consideration of the height of the hemispherical portion and the convex portion of the tip portion. And you may use the method of forming the external shape of the convex part 61, and the insertion hole 63 by cutting further. Moreover, as a material of the base body 2, a natural material such as cork may be used, but an artificial resin or the like may be used. For example, an ionomer resin foam, EVA (ethylene vinyl acetate copolymer), polyurethane, PVC (polyvinyl chloride), polyethylene, polypropylene, or the like can be used. Moreover, as a manufacturing method of the artificial feather 3, the manufacturing method shown in FIG. 12 mentioned above can be used.

Next, an assembly process (S200) is prepared. In the assembly step (S200), the roots of the shafts 7 of the plurality of artificial feathers 3 described above are inserted and fixed in the insertion holes 63 in the fixing surface portion of the base body. Further, the plurality of artificial feathers 3 are fixed to each other by a string-like member. In this way, the shuttlecock 1 shown in FIG. 1 can be manufactured. The fixing member that fixes the plurality of artificial feathers 3 to each other is not limited to the string-like member as described above, and any member such as a ring-like member may be used. Moreover, as a material of the said fixing member, arbitrary materials, such as resin and a fiber, can be used, for example. For example, an aramid fiber or glass fiber may be used as the string-like member, and the aramid fiber or glass fiber may be impregnated with a resin (for example, a thermosetting resin), and the resin may be cured to form a FRP fixing member. . By using FRP in this way, the strength and rigidity of the fixing member can be improved. Moreover, as a thermosetting resin, an epoxy resin and a phenol resin can be used, for example. If a thermosetting resin is used for FRP in this way, the fixing member can be easily FRP-made with the thermosetting resin when a heating step is performed in the process for fixing the fixing member to the shaft 7. be able to.

FIG. 18 shows a schematic perspective view of the shuttlecock as viewed from the base main body side. A modification of the first embodiment of the shuttlecock and the artificial feather for the shuttlecock according to the present invention will be described with reference to FIGS. 18 and 19.

Referring to FIG. 18, shuttlecock 1 according to the present invention basically has the same configuration as shuttlecock 1 shown in FIG. 1, but the configuration of artificial feather 3 is partially different. Specifically, in the shuttlecock 1 shown in FIG. 18, one flap portion 31 that protrudes outward from the side surface of the wing shaft portion 8 (see FIG. 19) of the artificial feather 3 is formed, and the wing shaft. 1 differs from the shuttlecock 1 shown in FIG. 1 in that the edge portion 32 is formed so as to protrude from the side of the portion 8 with a certain width. The artificial feather 3 shown in FIG. 19 has basically the same configuration as the artificial feather 3 shown in FIG. 2, but a flap portion 31 having a triangular planar shape is formed on the side of the wing shaft portion 8. Is formed. More specifically, the planar shape of the flap portion 31 is a triangular shape including a side extending in a direction substantially perpendicular to the central axis of the wing shaft portion 8 and a side obliquely intersecting the central axis. ing. In addition, although the vertex (end part farthest from the surface of the wing shaft part 8) in the planar shape of the flap part 31 may be located on the wing body part 5 side as shown in FIG. 18, it is arranged at another position. It may be. The flap portion 31 is constituted by a part of the sheet-like member 9.

In addition to the flap portion 31, the artificial feather 3 shown in FIG. 18 has the edge portion 32 formed on the side surface of the wing shaft portion 8 as described above. The edge portion 32 continues to both sides of the flap portion 31 and is disposed along the central axis of the wing shaft portion 8. Moreover, the edge part 32 is also formed in the side surface of the blade part 8 on the opposite side to the side in which the flap part 31 was formed. The edge portions 32 are each constituted by a part of the sheet-like member 9. The width L2 of the edge portion 32 is substantially constant at any position in the direction along the central axis of the wing shaft portion 8. The width L2 can be, for example, more than 0 mm and 3 mm or less, more preferably 0.5 mm or more and 2.5 mm or less. Note that only the flap portion 31 may be formed without forming the edge portion 32. The wing body part 5, the flap part 31, and the edge part 32 are located on substantially the same plane. The widths of the edge portions 32 located on both sides of the wing shaft portion 8 are the same.

The length L1 of the flap portion 31 in the direction along the central axis of the wing shaft portion 8 can be set to, for example, 5 mm to 15 mm, more preferably 7 mm to 12 mm, and still more preferably about 10 mm. As shown in FIG. 18, the flap portion 31 has two string shapes so that it can be disposed between two fixing string members as fixing members for fixing the plurality of artificial feathers 3. The length L1 is preferably shorter than the distance between the members.

Further, the position of the flap portion 31 in the direction along the central axis of the wing shaft portion 8 can be arbitrarily determined, but preferably the flap portion 31 is in a region closer to the wing body portion 5 than the center of the wing shaft portion 8. Form. If it does in this way, when shuttlecock 1 flies, possibility that flap part 31 will be hidden in the shadow of base body 2 of shuttlecock 1 can be reduced. For this reason, the maintenance function of the rotation performance of the shuttlecock 1 by the flap part 31 can be exhibited reliably.

Further, in the shuttlecock 1 shown in FIG. 18, it is preferable that the flap portion 31 is arranged at a position that is visible outside the base body 2 when viewed from the hemispherical base body 2 side. In this way, air can be supplied directly to the flap portion 31 without being obstructed by the base body 2 when the shuttlecock 1 flies. For this reason, the rotation maintenance function of the shuttlecock 1 by the flap part 31 can be exhibited effectively.

Further, in the shuttlecock 1 shown in FIG. 18, in the plurality of artificial feathers 3 arranged in an annular shape (so as to surround the central axis passing through the base body 2), the base body 2 is disposed on the side surface of the blade shaft portion 8. It is preferable that the flap part 31 is formed in the side surface (side surface facing an inner peripheral side) by the side which goes to the said central axis which passes. If it does in this way, the rotation maintenance function of shuttlecock 1 can be exhibited more effectively.

A modification of the artificial feather 3 will be described with reference to FIGS.
Referring to FIG. 20, another modification example of artificial feather 3 basically has the same configuration as artificial feather 3 shown in FIG. 19, but the planar shape of flap portion 31 is different. Specifically, in the artificial feather 3 shown in FIG. 20, the planar shape of the flap portion 31 is a rectangular shape (square shape). Also by the flap part 31 of such a shape, the effect similar to the flap part 31 in the artificial feather | wing 3 shown in FIG. 19 can be acquired. The planar shape of the flap portion 31 may be a quadrangular shape having sides orthogonal to the central axis of the wing shaft portion 8 as shown in FIG. 20, but other quadrangular shapes (for example, trapezoidal shapes and parallel four sides) Shape, rhombus, etc.) or a polygonal shape of pentagon or more.

Referring to FIG. 21, another modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 19, but the planar shape of the flap portion 31 is different. Specifically, in the artificial feather 3 shown in FIG. 21, the outer periphery of the planar shape of the flap portion 31 is curved. Also by the flap part 31 of such a shape, the effect similar to the flap part 31 of the artificial feather | wing 3 shown in FIG. 19 can be acquired. In the flap portion 31 shown in FIG. 21, the outer peripheral portion of the center portion in the direction along the central axis of the wing shaft portion 8 is the farthest portion farthest from the center of the wing shaft portion 8. However, depending on the required flight characteristics of the shuttlecock 1, the position of the farthest part in the direction along the central axis in the flap part 31 is the position of the wing body part 5 side or the wing body part 5 from the center part. You may shift to the opposite side to the side to do.

Referring to FIG. 22, another modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 19, but the planar shape of the flap portion 31 is different. Specifically, in the artificial feather 3 shown in FIG. 22, a rectangular flap portion 31 is formed as a flap portion 31 from one side surface of the wing shaft portion 8 over the entire length along the central axis of the wing shaft portion 8. Is formed. The width L3 of the flap portion 31 is substantially constant over the entire length of the wing shaft portion 8. In this way, since the flap portion 31 can be formed over almost the entire length of the wing shaft portion 8, the flap portion 31 is formed only in a partial region in the central axis direction of the wing shaft portion 8 as shown in FIG. The effect of generating the rotational force of the shuttlecock 1 by the flap portion 31 can be increased compared to the case where it is performed. The width L3 of the flap portion 31 can be, for example, 0.5 mm or more and 3 mm or less, more preferably 0.5 mm or more and 2.5 mm or less. In addition, in the flap part 31 and the edge part 32, you may form a notch part beforehand about the part to which the string-like member shown in FIG. 18 is fixed. In addition, a convex portion (fixing protrusion) may be formed in advance in the flap portion 31 and the edge portion 32 in order to increase the contact area with the cord-like member at the portion where the cord-like member is fixed.

Referring to FIG. 23, another modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 19, but in addition to the flap portion 31, the flap of the wing shaft portion 8 is provided. The difference is that another flap portion 33 is formed on the side opposite to the side on which the portion 31 is formed. The planar shape of the flap part 33 is triangular. Further, the flap portion 33 is arranged such that the apex (the end portion located farthest from the wing shaft portion 8) in the triangular plan shape is opposite to the side where the wing body portion 5 is located. That is, the vertex of the flap portion 33 is located on the opposite side in the central axis direction of the wing shaft portion 8 from the vertex of the flap portion 31. In this way, by providing the two

flap portions

31 and 33, the effect of generating the rotational force of the shuttlecock 1 by the

flap portions

31 and 33 can be increased.

Referring to FIG. 24, another modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 23, but the shapes of the

flap portions

31 and 33 are different. That is, the planar shapes of the

flap portions

31 and 33 of the artificial feather 3 shown in FIG. 24 are rectangular. As the planar shape of the

flap portions

31 and 33, as in the case of the flap portion 31 shown in FIG. 20, an arbitrary quadrangular shape or a polygonal shape of pentagon or more can be used. Even if it does in this way, the effect similar to the case where the artificial feather 3 shown in FIG. 23 is applied to the shuttlecock 1 can be acquired.

Referring to FIG. 25, another modified example of artificial feather 3 basically has the same configuration as artificial feather 3 shown in FIG. 23, but the shapes of

flap portions

31 and 33 are different. That is, the planar shape of the

flap portions

31 and 33 of the artificial feather 3 shown in FIG. 25 has a curved outer periphery in the planar shape similar to the flap portion 31 shown in FIG. Further, the flap portion 31 has a relatively large area with respect to the flap portion 33. Even with such a configuration, the same effect as that obtained when the artificial feather 3 shown in FIG. 23 or the like is applied to the shuttlecock 1 can be obtained.

Referring to FIG. 26, another modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 23, but the shapes of the

flap portions

31 and 33 are different. That is, in the artificial feather 3 shown in FIG. 26,

rectangular flap portions

31 and 33 are formed over the entire length along the central axis of the wing shaft portion 8. The widths of the

flap portions

31 and 33 are substantially the same. Even if it does in this way, the effect similar to the case where the artificial feather 3 shown in FIG. 23 is applied to the shuttlecock 1 can be acquired. In addition, you may vary the width | variety of the

flap parts

31 and 33 mutually.

Referring to FIG. 27, the other modification of the artificial feather 3 basically has the same configuration as the artificial feather 3 shown in FIG. 19, but the planar shape of the wing body 5 is the artificial feather of FIG. 3 is different. That is, in the artificial feather 3 shown in FIG. 27, the wing body 5 is asymmetrical about the fixing shaft 10. In this way, by controlling the shape of the wing body 5, the degree of freedom in controlling the flight characteristics of the shuttlecock 1 when applied to the shuttlecock 1 can be increased. In addition, in the structure which made the shape of the wing | blade main-body part 5 asymmetrical like FIG. 27, it is good also as a structure which does not form the

flap parts

31 and 33 and the edge part 32. FIG. Alternatively, in the configuration in which the shape of the wing body 5 is asymmetrical, the

flap portions

31 and 33 and the edge portion 32 having arbitrary shapes as shown in FIGS. 20 to 26 may be formed.

Moreover, in the modification of the artificial feather 3 mentioned above, although the structure which formed the edge part 32 in addition to the flap part 31 and / or the flap part 33 was shown, only the flap part 31 and / or the flap part 33 are formed, It is good also as a structure which does not form the edge part 32. FIG.

Further, in the shuttlecock 1 using the artificial feather 3 having the

flap portions

31 and 33, the region other than the portion where the string-like members as the two fixing members are fixed to the wing shaft portion 8 (for example, two string-like members) The

flap portions

31 and 33 are arranged in a region between them or a region other than a region sandwiched between two string members. If it does in this way, generation | occurrence | production of the problem that the shape of the flap part 31 deform | transforms by forming the flap part 31 so that a string-like member may overlap with the part fixed to the wing shaft part 8 can be suppressed.

Moreover, in the said shuttlecock 1, the

flap parts

31 and 33 are solidified by the technique of impregnating the

flap parts

31 and 33 with resin, such as an adhesive agent, or coating the surface of the

flap parts

31 and 33 with resin or a film ( Curing). In this case, it is possible to maintain the shapes of the

flap portions

31 and 33 for a long time when the shuttlecock 1 is used. Further, the edge portion 32 may be solidified in the same manner.

Further, in the shuttlecock 1, the artificial feather 3 is formed with one or two

flap portions

31, 33, but three or

more flap portions

31, 33 may be formed depending on required flight characteristics. By forming the

flap portions

31 and 33 at a plurality of locations in this way, the degree of freedom in adjusting the flight characteristics of the shuttlecock 1 can be further increased.

In the shuttlecock 1, the formation positions of the

flap portions

31 and 33 in the central axis direction of the wing shaft portion 8 may be different from each other. Further, one or a plurality of flap portions 31 may be formed only on one side surface of the wing shaft portion 8, or one or a plurality of

flap portions

31, 33 may be formed on both side surfaces of the wing shaft portion 8, respectively. May be. Further, in the shuttlecock 1, the size and shape of the flap portion 31 and the flap portion 33 may be different from each other.

(Embodiment 2)
With reference to FIG. 28, a second embodiment of the shuttlecock according to the present invention will be described. FIG. 28 corresponds to FIG.

The shuttlecock shown in FIG. 28 basically has the same structure as the shuttlecock 1 shown in FIGS. 1 to 3, but the structure of the connecting portion between the base body 2 and the artificial feather is shown in FIGS. It differs from the shuttlecock 1 shown. Specifically, in the shuttlecock base body 2 shown in FIG. 28, the side wall 62 of the convex portion 61 formed on the fixing surface portion is substantially perpendicular to the surface of the outer peripheral portion of the fixing surface portion. It is formed so as to extend. The insertion hole 63 of the shaft 7 is formed so as to extend inclined with respect to the side wall 62. That is, the extending direction of the insertion hole 63 is inclined (inclined in the direction toward the center of the base body 2) with respect to the outer peripheral portion of the fixing surface portion. An adhesive 64 for fixing the shaft 7 to the base body 2 is disposed so as to extend from the upper surface of the convex portion 61 to the outer peripheral portion of the fixing surface portion via the side wall 62. The adhesive 64 also enters the inside of the insertion hole 63 and fixes the side wall of the insertion hole 63 and the shaft 7 to each other. As described above, the bonding portion between the adhesive 64 and the base body 2 is three-dimensional, and the bonding area at the bonding portion can be made larger than the state where the convex portion 61 is not formed. Similar to the shuttlecock 1, the adhesive strength between the adhesive 64 and the base body 2 and the shaft 7 of the artificial feather 3 can be improved. Further, for example, when the convex portion 61 is formed by cutting the fixing surface portion of the base body 2, the side wall 62 of the convex portion 61 is inclined with respect to the outer peripheral portion of the fixing surface portion. The projection 61 can be easily processed.

(Embodiment 3)
A third embodiment of the shuttlecock according to the present invention will be described with reference to FIG. FIG. 29 corresponds to FIG.

The shuttlecock shown in FIG. 29 basically has the same structure as the shuttlecock 1 shown in FIGS. 1 to 3, but the structure of the connecting portion between the base body 2 and the artificial feather is shown in FIGS. It differs from the shuttlecock 1 shown. Specifically, in the base body 2 of the shuttlecock shown in FIG. 29, a concave portion 65 is formed on the upper surface of the convex portion 61 formed on the fixing surface portion. The recess 65 has a planar shape, for example, a circular shape. The planar shape of the concave portion 65 may be similar to the planar shape of the convex portion 61, or may be different from the planar shape of the convex portion 61. As with the base body 2 shown in FIG. 2, the insertion hole 63 is formed so as to extend along the side wall 62 from the outer peripheral portion on the upper surface of the convex portion 61.

The same effect as the shuttlecock 1 shown in FIGS. 1 to 3 can also be obtained by the shuttlecock using the base body 2 having the above-described configuration. Furthermore, since the recessed part 65 is formed in the upper surface of the convex part 61, the mass of the base main body 2 can be reduced rather than the base main body 2 shown in FIG. Therefore, for example, when it is desired to reduce the mass of the base body 2 from the mass balance between the artificial feather 3 and the base body 2, the base body 2 having the configuration shown in FIG. 29 can be used.

(Embodiment 4)
FIG. 30 is a partial schematic view for explaining a connection portion between the base body and the artificial feather in the fourth embodiment of the shuttlecock according to the present invention. FIG. 30 corresponds to FIG. A fourth embodiment of the shuttlecock according to the present invention will be described with reference to FIG.

The shuttlecock shown in FIG. 30 basically has the same structure as the shuttlecock 1 shown in FIGS. 1 to 3, but the structure of the connecting portion between the base body 2 and the artificial feather is shown in FIGS. It differs from the shuttlecock 1 shown. Specifically, in the base body 2 of the shuttlecock shown in FIG. 30, a recess 75 is formed in the fixing surface portion, and an insertion hole 63 is formed along the side wall 72 of the recess 75. By forming the concave portion 75, an annular convex portion 61 having a circular planar shape is formed on the outer peripheral portion of the fixing surface portion. The side wall 72 is inclined with respect to the bottom wall of the recess 75. That is, the side wall 72 is inclined so that the width of the recess 75 gradually becomes narrower from the top of the recess 75 toward the bottom wall of the recess 75. The planar shape of the recess 75 is circular. The insertion hole 63 is formed so as to extend obliquely along the side wall 72 from the outer peripheral portion of the fixing surface portion continuous with the upper portion of the recess 75. The artificial feather shaft 7 is inserted into the insertion hole 63. The arrangement of the insertion hole 63 is determined so that the side surface of the shaft 7 protrudes from the side wall 72. Then, the adhesive 64 extends from the end portion of the bottom wall of the recess 75 to the outer peripheral surface of the fixing surface portion via the side wall 72 as shown in FIG. Placed in. The shaft 7 of the artificial feather 3 is firmly fixed to the base body 2 by the adhesive 64.

The same effect as the shuttlecock 1 shown in FIGS. 1 to 3 can also be obtained by the shuttlecock using the base body 2 having the above-described configuration. That is, the adhesive 64 can be disposed from the outer peripheral surface of the fixing surface portion (the upper surface of the convex portion 61) to the bottom wall of the concave portion 75 through the side wall of the concave portion 75. For this reason, the area of the adhesive surface between the adhesive 64 and the base body 2 can be increased even when the recess 75 is not formed, and the shape of the adhesive surface becomes a three-dimensional shape. For this reason, the adhesive strength between the adhesive 64 and the base body 2 and the shaft 7 of the artificial feather 3 can be improved.

(Embodiment 5)
A fifth embodiment of the shuttlecock according to the present invention will be described with reference to FIG. FIG. 31 corresponds to FIG.

The shuttlecock shown in FIG. 31 basically has the same structure as the shuttlecock 1 shown in FIGS. 1 to 3, but the structure of the connecting portion between the base body 2 and the artificial feather is shown in FIGS. It differs from the shuttlecock 1 shown. Specifically, in the base body 2 of the shuttlecock shown in FIG. 31, an elastic member 71 as a convex portion is connected and fixed to the fixing surface portion. The side wall 72 of the elastic body member 71 is formed so as to be inclined with respect to the fixing surface portion in the same manner as the side wall 62 of the convex portion 61 of the base body 2 shown in FIG. A plurality of insertion holes 63 are formed on the fixing surface portion in a circumferential shape. The artificial feather shaft 7 is inserted and fixed in the insertion hole 63. The shaft 7 is arranged in an annular shape, but the elastic member 71 is arranged so as to contact the inner peripheral side of the shaft 7 arranged in an annular shape. That is, the side wall 72 of the elastic member 71 is disposed so as to extend along the extending direction of the shaft 7 (the extending direction of the insertion hole 63). If it says from a different viewpoint, the elastic body member 71 as a convex part will be arrange | positioned adjacent to the inner peripheral side of the some insertion hole 63 arrange | positioned circumferentially. The elastic member 71 is fixed to the fixing surface portion by an arbitrary adhesive member (for example, an adhesive).

The same effect as the shuttlecock 1 shown in FIGS. 1 to 3 can also be obtained by the shuttlecock using the base body 2 having the above-described configuration. Further, since the elastic body member 71 as the convex portion is constituted by a member different from the fixing surface portion (that is, the base body 2), the material of the elastic body member 71 is determined independently of the material of the base body 2. be able to. Therefore, for example, an elastic body or the like (for example, rubber or other resin) having a characteristic different from that of the base body 2 can be used as the material of the elastic body member 71 in order to buffer an impact applied to the shaft 7. For this reason, the freedom degree of design of the base main body 2 can be enlarged.

(Embodiment 6)
A fifth embodiment of the shuttlecock according to the present invention will be described with reference to FIG. FIG. 32 corresponds to FIG.

The shuttlecock shown in FIG. 32 basically has the same structure as the shuttlecock 1 shown in FIGS. 1 to 3, but the structure of the connecting portion between the base body 2 and the artificial feather is shown in FIGS. It differs from the shuttlecock 1 shown. Specifically, in the base body 2 of the shuttlecock shown in FIG. 32, a convex portion 61 is formed on the fixing surface portion, and at the boundary portion between the side wall 62 of the convex portion 61 and the outer peripheral portion of the fixing surface portion. An insertion hole 63 is formed on the adjacent outer peripheral side. The extending direction of the insertion hole 63 is a direction along the side wall 62 of the convex portion 61. For this reason, the surface of the shaft 7 inserted into the insertion hole 63 (the inner peripheral surface of the shaft 7 arranged in an annular shape) is in contact with the side wall 62 of the convex portion 61. An adhesive 64 for fixing the shaft 7 to the base body 2 is disposed so as to extend from the upper surface of the convex portion 61 to the outer peripheral portion of the fixing surface portion via the side wall 62. The adhesive 64 also enters the inside of the insertion hole 63 and fixes the side wall of the insertion hole 63 and the shaft 7 to each other.

The same effect as the shuttlecock 1 shown in FIGS. 1 to 3 can also be obtained by the shuttlecock using the base body 2 having the above-described configuration.

(Embodiment 7)
A seventh embodiment of the shuttlecock according to the present invention will be described with reference to FIGS.

The shuttlecock provided with the artificial feather 3 shown in FIGS. 33 to 37 basically has the same configuration as the shuttlecock 1 shown in FIGS. 1 to 3, but the configuration of the artificial feather 3 is as shown in FIGS. This is different from the shuttlecock 1 shown in FIG. That is, the artificial feather 3 shown in FIGS. 33 to 37 is composed of a wing body part 5 and a shaft 7 connected to the wing body part 5 in the same manner as the artificial feather 3 shown in FIGS. . The configuration of the shaft 7 is the same as that of the artificial feather 3 shown in FIGS. The wing body 5 is connected to a protrusion 12 that is held in a state of being embedded in the wing shaft 8. The wing body 5 and the protrusion 12 constitute one sheet-like member 90. Further, a part of the protruding portion 12 is an edge portion 32 protruding from the side of the wing shaft portion 8. The sheet-like member 90 has a laminated structure (two-layer structure) of a nonwoven fabric 91 and a resin layer 92 as shown in FIGS. In this way, the same effect as that of the shuttlecock 1 in Embodiment 1 of the present invention can be obtained, and the material of the resin layer 92 can be appropriately selected as compared with the case where the sheet-like member is constituted only by the nonwoven fabric 91. The strength and shape retention function of the sheet-like member 90 can be increased. Note that other configurations may be employed as the configuration of the sheet-like member 90. For example, a sheet-like member having a laminated structure of three or more layers may be used as the sheet-like member 90. In addition to the combination of the nonwoven fabric and the resin layer, any combination of materials can be used as the material of the layers constituting the laminated structure.

Next, the shuttlecock artificial feather 3 shown in FIGS. 33 to 37 and a method for manufacturing the badminton shuttlecock using the artificial feather 3 will be briefly described. With reference to FIG. 38, a method of manufacturing the artificial feather 3 for the shuttlecock according to the present invention as shown in FIGS. 33 to 37 will be described.

As shown in FIG. 38, in the manufacturing method of this artificial feather 3, a laminated sheet preparation process (S60) is first implemented. As a laminated sheet as a sheet-like member prepared in this step (S60), a laminated sheet having an arbitrary shape can be used. For example, a laminated sheet having a substantially rectangular planar shape with rounded four corners is prepared. May be. The thickness of the laminated sheet can be selected as appropriate in consideration of the air resistance and mass balance of the artificial feather 3 to be formed. For example, when a laminated structure of a nonwoven fabric and a resin layer as shown in FIGS. 33 to 37 is employed, a nonwoven fabric made of chemical fibers such as polyester fibers and acrylic fibers can be used as the nonwoven fabric. For example, a nonwoven fabric having a basis weight of 10 g / m ² or more and 90 g / m ² or less can be used. Further, for example, a nonwoven fabric made of polyester fiber having a basis weight of 30 g / m ^{2 to} 80 g / m ² and a thickness of 0.07 mm to 0.13 mm can also be used. The nonwoven fabric made of polyester fiber preferably has a basis weight of 40 g / m ² or more and 60 g / m ² or less, a thickness of 0.08 mm or more and 0.12 mm or less, more preferably a basis weight of 40 g / m ² or more and 50 g / m ^2. In the following, a thickness of 0.09 mm to 0.11 mm may be used. In addition, as the resin layer, for example, when a film-like member made of polyethylene, polypropylene, EVA, polyurethane, PET (polyethylene terephthalate), nylon, or a foamed sheet made of these materials is used, the thickness is 0.01 mm or more and 2 mm. Hereinafter, the thickness is preferably 0.015 mm or more and 1.5 mm or less, more preferably 0.3 mm or more and 1.2 mm or less. In addition, the conventionally well-known arbitrary methods can be employ | adopted for the manufacturing method of a lamination sheet.

Next, a step (S70) of placing the laminated sheet inside the mold is performed. In this step (S70), the non-woven fabric prepared in the step (S60) described above is placed inside a mold for forming the shaft 7 using, for example, an injection molding method.

Next, a mold setting step (S30) is performed. Specifically, the mold in which the laminated sheet is arranged is arranged in a state where the resin constituting the shaft 7 can be injected therein, and the temperature condition of the mold is adjusted.

Next, a resin injection step (S40) is performed. Specifically, the resin is injected into the mold through a resin injection hole provided in the mold. As a result, the shaft 7 is formed in a state of being fixed in contact with the sheet-like member 90 made of a laminated sheet inside the mold.

Next, a post-processing step (S50) is performed. Specifically, the sheet-like member 90 to which the shaft 7 is connected and fixed and fixed is taken out from the inside of the mold. At this time, the cross section of the shaft 7 is in a state as shown in FIGS. That is, the shaft 7 is connected to the sheet-like member 90 over almost the entire length thereof. In the shaft 7, the sheet-like member 90 is embedded in the shaft 7 on the root side of the shaft 7 as described above. On the other hand, the sheet-like member 90 is exposed on the surface of the shaft 7 as it goes to the tip end side of the shaft 7. In particular, at the tip end side of the shaft 7, the sheet-like member 90 is fixed to the surface of the shaft 7. Such a configuration can be realized by the shape of a groove for forming the shaft 7 inside the mold, the arrangement of a laminated sheet serving as the sheet-like member 90, or the like. Next, in the post-processing step (S50) described above, unnecessary portions (portions other than the portions to be the wing body portion 5 and the edge portion 32) of the laminated sheet are cut and removed. As a result, the artificial feather 3 shown in FIG. 33 can be obtained.

Next, a method for manufacturing a shuttlecock to which the artificial feather 3 shown in FIGS. 33 to 37 is applied will be briefly described. The method for manufacturing the shuttlecock is basically the same as the method for manufacturing the shuttlecock 1 in the first embodiment of the present invention. That is, in the shuttlecock manufacturing method, first, the preparation step (S100) (see FIG. 13) is performed. In this preparation step (S100), the components of the shuttlecock such as the base body 2 and the artificial feather 3 of the shuttlecock 1 are prepared. The method described in Embodiment 1 of the present invention can be used as the method for manufacturing the base body 2. Moreover, as a manufacturing method of the artificial feather 3, the manufacturing method mentioned above can be used.

Next, an assembly process (S200) (see FIG. 13) is performed. The work contents in the assembly process (S200) are the same as the contents of the process (S200) described in the first embodiment of the present invention. In this way, a shuttlecock using the artificial feather 3 shown in FIGS. 33 to 37 can be manufactured.

(Embodiment 8)
With reference to FIGS. 39 to 41, an eighth embodiment of the shuttlecock according to the present invention will be described.

The shuttlecock 1 shown in FIGS. 39 to 41 is basically the same structure as the shuttlecock using the artificial feather 3 shown in FIGS. 33 to 37 (in the shuttlecock 1 shown in FIGS. 1 to 3). The artificial feather 3 has a structure in which the artificial feather 3 shown in FIGS. 33 to 37 is applied), and includes a fixing method for fixing the laminated portion (overlapping portion) of the artificial feather 3 in the wing body 5. Is different. That is, in order to maintain the laminated state of the plurality of artificial feathers 3, the middle thread 15 is used as a fixing member. The middle thread 15 is arranged so as to define the positional relationship between the plurality of artificial feathers 3 as will be described later. Hereinafter, the arrangement of the middle thread 15 will be specifically described with reference to FIG.

As shown in FIG. 41, the middle thread 15 circulates around the shaft 7 of the artificial feather 3 and is adjacent to the artificial feather in the portion of the wing body 5 that is stacked on the adjacent artificial feather 3. The three wing body portions 5 are arranged so as to pass through regions facing each other (pass between the stacked wing body portions 5). In this way, the middle thread 15 passes between the laminated wing main body portions 5 at the portion where the wing main body portions 5 are laminated, so that the lamination order of the wing main body portions 5 is changed during use of the shuttlecock (for example, a racket). The occurrence of such a problem that the stacking order of the wing main body portions 5 is changed by the impact of the impact of the above can be suppressed.

The above-described middle thread 15 is circumferentially arranged so as to fix all of the plurality of artificial feathers 3 arranged in an annular shape as shown in FIGS. 39 and 40. The intermediate thread 15 can be arranged as shown in FIGS. 39 to 41, for example, by an operator sewing it with a needle or the like. In this way, in addition to the effects obtained by the shuttlecock 1 shown in FIGS. 1 to 3, by suppressing the occurrence of the problem that the stacking order of the wing body portions 5 is changed during use of the shuttlecock. The shuttlecock 1 exhibiting excellent durability can be obtained.

The circumferentially arranged middle thread 15 is connected to one end at the start of sewing and the other end at the end of sewing, and the remaining thread is cut and removed near the knot. It is preferable to form a protective layer by applying an adhesive or the like to the knot. By forming such a protective layer, it is possible to prevent the knot from being broken when the shuttlecock 1 is hit with a racket.

Further, although any material such as cotton or resin can be used for the middle thread 15, it is preferable to use a polyester thread. Further, it is preferable to use the middle thread 15 that is as light as possible so as not to affect the center of gravity of the shuttlecock 1 as much as possible. For example, as a yarn to be used, a 50th polyester yarn may be used. In this case, the mass of the yarn used as the middle yarn 15 is about 0.02 g. This mass is considered to have little influence on the flight performance, although there is a slight influence on the position of the center of gravity of the shuttlecock 1. Moreover, about the arrangement | positioning of the middle thread | yarn 15, the distance from the base main body 2 can be set arbitrarily.

The manufacturing method of the shuttlecock 1 shown in FIGS. 39 to 41 is basically the same as the manufacturing method of the shuttlecock shown in FIGS. 1 to 3, but the intermediate thread 15 in the assembly step (S200) described above. The step of arranging is performed. The middle thread 15 may be arranged, for example, by an operator's sewing work. In addition, although arbitrary materials can be used as the middle thread 15, for example, as described above, a resin such as cotton or polyester can be used as the material. In this way, the shuttlecock 1 shown in FIGS. 39 to 41 can be manufactured.

(Embodiment 9)
42 and 43, a ninth embodiment of the shuttlecock according to the present invention will be described.

Referring to FIGS. 42 and 43, shuttlecock 1 according to the present invention basically has the same configuration as shuttlecock 1 shown in FIGS. 39 to 41, but the stacking order of artificial feathers 3 is the same. The difference is that a fusion fixing portion 41 is formed instead of a middle thread as a fixing portion for preventing the replacement. The fusion fixing part 41 has an elliptical planar shape, and is formed by partially melting and resolidifying the laminated wing body part 5 using a welder or the like. That is, in the fusion fixing part 41, the materials constituting the wing body part 5 are fixed to each other by partially melting and solidifying. The planar shape of the fusion fixing part 41 can be any shape as will be described later.

In this way, the same effect as the shuttlecock 1 shown in FIGS. 39 to 41 can be obtained. That is, the adhesive strength between the base main body 2 and the shaft 7 of the artificial feather 3 can be improved in the same manner as the shuttlecock 1 shown in FIGS. It is possible to suppress the flight performance of the shuttlecock 1 from being deteriorated due to the deformation of the blade 3. Further, in the shuttlecock 1 shown in FIG. 42 and FIG. 43, it is not necessary to carry out a process of arranging an adhesive or the like on the surface of the wing body part 5 in the manufacturing process in advance, so that the manufacturing process is simplified. Can do.

A modification of the ninth embodiment of the shuttlecock according to the present invention will be described with reference to FIG.
The shuttlecock 1 shown in FIG. 44 has basically the same structure as the shuttlecock 1 shown in FIGS. 42 and 43, but the structure and manufacturing method of the fusion fixing part 41 are different. That is, in the shuttlecock 1 shown in FIG. 44, the reinforcing member 43 is disposed between the wing body portions 5 stacked in the fusion fixing portion 41. The reinforcing member 43 is formed, for example, by placing a resin piece such as polypropylene in the laminated portion of the wing body 5 and heating and resolidifying it together with the wing body 5 to reinforce the fusion fixing portion 41. . For example, a polypropylene resin sheet having a rectangular shape of 4 mm in length and width and a thickness of 200 μm can be used as the reinforcing member 43. By arranging such a reinforcing member 43, the strength of the fusion fixing part 41 can be improved. As a result, the durability of the shuttlecock 1 can be improved.

Any resin can be used as the reinforcing member 43 described above, but a film made of polypropylene (PP), for example, can be used. It is possible to fuse the polypropylene film as the wing body part 5 and the reinforcing member 43 by sandwiching such a film between the wing body parts 5 laminated in advance and heating the part using a welder or the like. it can.

As such a reinforcing member 43, it is preferable to use a material that is different from the material constituting the wing body 5 and has a lower melting point than the material constituting the wing body 5. In this way, the fusion fixing part 41 can be formed with a relatively small amount of heat applied to the fusion fixing part 41. In this case, the material itself constituting the wing body 5 is not completely melted, and the fusion fixing portion 41 is formed by melting and re-solidifying the reinforcing member 43.

As a method for forming such a fusion fixing part 41, for example, the following method can be used. That is, a film having a predetermined size (for example, a quadrangular film having a size of about 4 mm × 4 mm) is prepared as the reinforcing member 43, and the film is temporarily fixed at a predetermined position on the wing body 5. For this temporary fastening, for example, a very small amount of adhesive, pressure-sensitive adhesive, or the like can be used. Then, using a hand-type ultrasonic welder device or the like, the wing body 5, the reinforcing member 43, and the other wing body 5 and the laminated portion having a three-layer structure are pressed and heated. In this way, the fusion fixing part 41 can be formed.

Note that the mass of the reinforcing member 43 is extremely light, for example, approximately 0.04 g when the above-described polypropylene film is used. Therefore, the reinforcing member 43 hardly affects the mass balance of the shuttlecock.

45 and 46, another modification of the ninth embodiment of the shuttlecock according to the present invention will be described.

The shuttlecock 1 shown in FIGS. 45 and 46 basically has the same structure as the shuttlecock 1 shown in FIGS. 42 and 43, but in addition to the fusion fixing part 41, the wing part of the artificial feather 3. An inner thread 17 is disposed to prevent the inner thread from bending (curling).

The inner thread 17 circulates around the axis of the artificial feather 3. The inner thread 17 is arranged so as to reach the axis of the other artificial feather 3 adjacent from the inner circumference side of the plurality of artificial feathers 3 arranged in an annular shape and sequentially circulate around the axis. ing. In this way, as can be seen from FIGS. 45 and 46, the inner thread 17 is arranged along the inner peripheral side of the artificial feather 3 arranged in an annular shape. For this reason, at the time of use of the shuttlecock 1, it can suppress that the wing | blade main-body part of the artificial feather | wing 3 is bent to the inner peripheral side (side in which the inner thread | yarn 17 is located). As a result, it is possible to more reliably suppress the occurrence of a problem that characteristics such as air resistance of the shuttlecock 1 are greatly changed.

Hereinafter, modifications of the fusion fixing portion 41 of the shuttlecock 1 according to the present invention will be described.
47 has a quadrangular planar shape. As shown in FIG. In the fusion fixing part 41, the corner part is rounded. Further, the fusion fixing portion 41 in the artificial feather 3 has a base body 2 (not shown) from the central portion in the direction along the shaft 7 of the wing body portion 5 having a length L0 in the direction along the shaft 7. ) Side area. The length L1 in the direction along the axis 7 of the region where the fusion fixing part 41 is arranged is 40% or more and 65% or less, more preferably 40% or more and 50% or less of the length L0. In addition, at least a part of the fusion fixing portion 41 is in the width direction, which is a direction perpendicular to the shaft 7 of the artificial feather 3, and the end portion of the shaft 7 and the wing body portion 5 (the shaft 7 in the wing body portion 5 in FIG. 47). Is formed in a region closer to the shaft 7 than an intermediate point between the outer peripheral portion and the portion farthest from the shaft 7). That is, consider the central axis 22 of the shaft 7 shown in FIG. 47 and a line segment 23 that passes through the end portion farthest from the shaft 7 in the width direction in the wing body 5 and is parallel to the central axis 22. When a line segment 24 that passes through an intermediate point between the central axis 22 and the line segment 23 and is parallel to the central axis 22 is defined, at least a part of the fusion fixing portion 41 is separated from the line segment 24 in the wing body 5. It is preferably located in a region surrounded by the shaft 7.

48. The fusion fixing portion 41 of the shuttlecock shown in FIG. 48 has a rectangular (or linear) planar shape. The fusion fixing portion 41 extends in a direction along the axis 7. With such a shape, the overlapping state of the wing body 5 can be maintained over a wide range in the direction along the axis 7.

49. The shuttlecock fusion fixing portion 41 shown in FIG. 49 has a triangular plane shape. One side of the outer periphery of the fusion fixing part 41 extends in the direction along the axis 7, and the corner part of the fusion fixing part 41 facing the side extending in the direction along the axis 7 is It arrange | positions in the position which approached the base main body 2 (not shown) side from the center part of the said side. By adopting such a shape, it is possible to obtain an effect that the load applied to the fusion fixing portion 41 is distributed.

50. The fusion fixing part 41 of the shuttlecock shown in FIG. 50 is composed of a plurality of dot-like fixing parts. The planar shape of each fixed portion is a circular shape, but may be any other shape. In addition, the area where the fixing portion is arranged may be a rectangular or elliptical area extending in the direction along the axis 7. In this way, with the area of the part actually fused (the total area of the dot-like fixing parts) being reduced, the wing body for a wide area (area where the dot-like fixing parts are distributed) The overlapping state of the part 5 can be maintained.

51. The fusion fixing part 41 of the shuttlecock shown in FIG. 51 is composed of two rectangular fixing parts. The planar shape of each of the fixed portions is a square shape, but may be any other shape (for example, a circle, an ellipse, a polygon, etc.). Moreover, the size of each fixing | fixed part may not be made the same, but you may arrange | position two or more and three or more fixing | fixed parts with a difference in size. By adopting such a shape, for example, even if one of the individual fixing portions is removed, the other fixing portion functions and the shape of the shuttlecock can be maintained. Further, the fusion fixing part 41 can be arranged in a wide range of the wing body part 5 while suppressing an increase in the mass of the shuttlecock.

In addition, the shape of the above-mentioned fusion fixing part 41 is an example, and the shape of the fusion fixing part 41 can be any other shape. The conditions of the region where the fusion fixing part 41 is arranged as described in FIG. 47 can also be applied to the fusion fixing part 41 shown in FIGS.

(Embodiment 10)
52 and 53, a tenth embodiment of the shuttlecock according to the present invention will be described.

As shown in FIGS. 52 and 53, the shuttlecock 1 basically has the same structure as the shuttlecock 1 shown in FIGS. 42 and 43, but as a mechanism for maintaining the laminated state of the artificial feathers 3. The difference is that the adhesive fixing portion 51 is formed instead of the fusion fixing portion 41. That is, as shown in FIG. 52, in the laminated part of the wing body part 5 of the artificial feather 3 arranged in an annular shape, the wing body laminated on the side closer to the base body 2 than the center part of the wing body part 5 An adhesive fixing portion 51 in which an adhesive member 53 is disposed between the portions 5 is formed. In the adhesive fixing part 51, the wing body parts 5 stacked via the adhesive member 53 are adhesively fixed as shown in FIG. Even if it does in this way, the effect similar to the shuttlecock 1 shown to FIG. 42 and FIG. 43 can be acquired.

Note that the planar shape of the above-described adhesive fixing portion 51 can be an arbitrary shape (for example, the shape shown in FIGS. 47 to 51), similarly to the fusion fixing portion 41 in the ninth embodiment. The manufacturing method of the shuttlecock 1 shown in FIGS. 52 and 53 is basically the same as the manufacturing method of the shuttlecock shown in FIGS. 42 and 43. However, the manufacturing method of the shuttlecock 1 shown in FIGS. Instead of forming the fixing / fixing portion 41, the adhesive member 53 is arranged at a predetermined position of the artificial feather 3, and the artificial feather 3 is bonded and fixed by the adhesive member 53 to form the adhesive fixing portion 51. In this way, the shuttlecock shown in FIGS. 52 and 53 can be obtained.

(Embodiment 11)
With reference to FIGS. 54 to 56, an eleventh embodiment of the shuttlecock according to the present invention will be described.

The shuttlecock 1 shown in FIGS. 54 to 56 basically has the same structure as that of the shuttlecock 1 shown in FIGS. 39 to 41, but the laminated portion (overlapping portion) of the wing body 5 of the artificial feather 3. ) Is fixed differently. That is, the inner thread 17 is used in addition to the middle thread 15 in order to maintain the laminated state of the plurality of artificial feathers 3. The middle thread 15 and the inner thread 17 are arranged so as to define the positional relationship between the plurality of artificial feathers 3 as described later. Hereinafter, the arrangement of the inner thread 17 will be described in detail with reference to FIG. The arrangement of the middle thread 15 is the same as the arrangement of the middle thread 15 shown in FIG.

As shown in FIG. 56, the inner thread 17 circulates around the shaft 7 of the artificial feather 3 in the same manner as the middle thread 15 shown in FIG. The inner thread 17 reaches the shaft 7 of the other artificial feather 3 adjacent from the inner peripheral side of the plurality of artificial feathers 3 arranged in an annular shape, and sequentially circulates around the shaft 7. Has been placed. In this way, as can be seen from FIGS. 55 and 56, the inner thread 17 is arranged along the inner peripheral side of the artificial feather 3 arranged in an annular shape. For this reason, at the time of use of the shuttlecock 1, it can suppress that the wing | blade main-body part 5 of the artificial feather | wing 3 is bent to the inner peripheral side (side in which the inner thread | yarn 17 is located). As a result, it is possible to suppress the occurrence of a problem that characteristics such as air resistance of the shuttlecock 1 are greatly changed.

The above-described middle thread 15 and inner thread 17 are arranged circumferentially so as to fix all of the plurality of artificial feathers 3 arranged in a ring shape to each other as shown in FIGS. The middle thread 15 and the inner thread 17 can be arranged as shown in FIGS. 54 to 56 and FIG. 41, for example, by an operator sewing using a needle or the like. As with the middle thread 15 shown in FIG. 41, the circumferentially arranged inner thread 17 is formed by connecting one end portion at the start of sewing and the other end portion at the end of sewing so that the remaining thread portion Is cut and removed near the knot. It is preferable to form a protective layer by applying an adhesive or the like to the knot. By forming such a protective layer, it is possible to prevent the knot from being broken when the shuttlecock 1 is hit with a racket.

As with the middle thread 15, the inner thread 17 can be made of any material such as cotton or resin, but is preferably made of a polyester thread. Further, it is preferable to use the middle thread 15 and the inner thread 17 that are as light as possible so as not to affect the center of gravity of the shuttlecock 1 as much as possible. For example, as a yarn to be used, a 50th polyester yarn may be used.

Further, as shown in FIGS. 54 and 55, the middle thread 15 and the inner thread 17 may be arranged at different distances from the base body 2, but the distance from the base body 2 is substantially different. These middle thread 15 and inner thread 17 may be arranged at the same position. However, in the case where the stacking order of the artificial feathers 3 is fixed and the middle thread 15 and the inner thread 17 are used as strength members, it is preferable that the distance between the middle thread 15 and the inner thread 17 from the base body 2 is different. . In consideration of preventing the wing body 5 of the artificial feather 3 from bending (curling) inward, it is more effective to dispose the inner thread 17 at a position farther from the base body 2 than the middle thread 15. Is.

The manufacturing method of the shuttlecock 1 shown in FIGS. 54 to 56 is basically the same as the manufacturing method of the shuttlecock shown in FIGS. 39 to 41, but in the assembly step (S200) described above, the middle thread 15 In addition to the step of arranging the inner yarn 17, the step of arranging the inner thread 17 is performed. The middle thread 15 and the inner thread 17 may be arranged, for example, by an operator's sewing work. In addition, as a material of the inner thread 17, the thread | yarn of the same material and thickness as the middle thread 15 mentioned above can be used. In this way, the shuttlecock 1 shown in FIGS. 18 and 19 can be manufactured.

57 and 58, a modification of the eleventh embodiment of the shuttlecock 1 according to the present invention will be described.

The shuttlecock 1 shown in FIGS. 57 and 58 basically has the same structure as the shuttlecock 1 shown in FIGS. 54 and 55, but in addition to the middle thread 15 and the inner thread 17, an outer thread is further provided. 19 differs in that 19 is installed to maintain the laminated state and shape of the artificial feather 3. That is, the outer thread 19 circulates around the axis 7 of the artificial feather 3 as can be seen from FIG. 58, and the axis of the adjacent artificial feather 3 through the outer peripheral side of the artificial feather 3 as shown in FIG. It arrange | positions so that it may go around the circumference | surroundings of 7 again. If it does in this way, generation | occurrence | production of the problem that the wing | blade main-body part 5 of the artificial feather | wing 3 will bend to an outer peripheral side can be suppressed.

The outer thread 19 can be made of the same material or the same thickness as the above-described middle thread 15. Further, the installation method of the outer thread 19 is also based on the sewing work by the operator as in the case of the above-described middle thread 15 and the like.

(Embodiment 12)
With reference to FIG. 59, a twelfth embodiment of a shuttlecock according to the present invention will be described.

The shuttlecock 1 shown in FIG. 59 basically has the same structure as the shuttlecock 1 shown in FIGS. 39 to 41, but the structure of the members for maintaining the laminated state of the artificial feathers 3 is different. That is, in the shuttlecock 1 shown in FIGS. 39 to 41, the middle thread 15 is arranged to maintain the laminated state and shape of the wing body 5 of the artificial feather 3, but the shuttlecock shown in FIG. 1, a plurality of artificial feathers 3 are sewn in a circumferential shape by a fixing thread 81 at a position on the base body 2 side of the wing body 5. By stitching the plurality of artificial feathers 3 together with such a fixing thread 81, the laminated state of the artificial feathers 3 can be easily maintained. As a result, the same effect as the shuttlecock 1 shown in FIGS. 39 to 41 can be obtained.

A modification of the twelfth embodiment of the shuttlecock according to the present invention will be described with reference to FIGS.

Referring to FIGS. 60 and 61, the modified example of the embodiment 12 of the shuttlecock of the present invention basically has the same structure as the shuttlecock 1 shown in FIG. The arrangement is different. That is, in the shuttlecock 1 shown in FIG. 60 and FIG. 61, in the portion of the wing main body portion 5 in a state where the adjacent artificial feathers 3 are stacked, the shuttlecock 1 extends in the direction along the extending direction of the shaft 7. The two wing body parts 5 on which the fixing thread 81 is laminated are sewn together. The region where the fixing thread 81 is sewn extends so as to be substantially along the extending direction of the shaft 7. Even in this manner, the laminated state of the wing body 5 of the artificial feather 3 can be maintained in the shuttlecock 1.

(Embodiment 13)
62 and 63, a thirteenth embodiment of the shuttlecock according to the present invention will be described.

62 and 63, shuttlecock 1 basically has the same structure as the shuttlecock shown in FIGS. 42 and 43, but the shape of artificial feather 3 and the fusion between adjacent artificial feathers 3 are the same. The arrangement of the landing fixing portion 41 is different from that of the shuttlecock shown in FIGS. That is, as shown in FIG. 63, the artificial feather 3 constituting the shuttlecock 1 in the present embodiment basically has the same configuration as the artificial feather 3 shown in FIG. The shape is different. Specifically, as shown in FIG. 63, in the artificial feather 3 constituting the shuttlecock 1 shown in FIG. 62, an extending portion 50 that protrudes to the outer peripheral side is formed in the wing body portion 5. The extending portion 50 extends in a direction away from the shaft 7 (specifically, a direction crossing the shaft 7, more specifically, a direction orthogonal to the shaft 7). In the shuttlecock 1 shown in FIG. 62, the extending portion 50 of the artificial feather 3 extends to a position beyond the shaft 7 of the other artificial feather 3 on the inner peripheral side of the other adjacent artificial feather 3. is doing. The extending portion 50 and the wing body portion 5 of the other artificial feather 3 are connected and fixed by a fusion fixing portion 41 at a position beyond the shaft 7. In the fusion fixing part 41, a reinforcing member 43 may be disposed between the extension part 50 and the wing body part 5 of another artificial feather 3 as shown in FIG. Further, the planar shape of the fusion fixing part 41 may be an arbitrary shape as shown in FIGS. 47 to 51, for example.

As for the arrangement of the fusion fixing portion 41, at least a part of the shaft 7 and the wing body portion 5 (see FIG. 63) in the width direction which is a direction perpendicular to the shaft 7 of the artificial feather 3 (see FIG. 63). 62 (in the wing body portion of FIG. 62, the outermost portion facing the shaft 7, the portion farthest from the shaft 7) is formed in a region closer to the shaft 7. That is, consider the central axis 22 of the shaft 7 shown in FIG. 62 and the line segment 23 that passes through the end portion farthest from the shaft 7 in the width direction in the wing body and is parallel to the central axis 22. When a line segment 24 passing through an intermediate point between the central axis 22 and the line segment 23 and parallel to the central axis 22 is defined, at least a part of the fusion fixing portion 41 is separated from the line segment 24 in the wing body 5. It is preferably located in a region surrounded by the shaft 7. In addition, the outer peripheral part facing the shaft 7 in the above-described wing main body part means an outer peripheral part of a region that does not include the extending part 50 in the wing main body part 5.

Even with such a configuration, the laminated state of the wing body portion 5 of the artificial feather 3 can be maintained as in the shuttlecock 1 shown in FIGS. 42 and 43. Furthermore, since the fusion fixing part 41 is disposed at a position beyond the axis 7 of the other artificial feather 3 adjacent to the fusion fixing part 41, the fusion fixing part 41 is arranged in the other artificial feather 3 as shown in FIGS. The degree of freedom of the shape of the artificial feather 3 and the degree of freedom of the arrangement of the fusion fixing part 41 are larger than the case of being disposed on the near side of the shaft 7. For this reason, with the configuration shown in FIG. 62, the twist angle of the artificial feather 3 is maintained at a predetermined size even from the center of the wing body 5 to the tip side (the end side in the direction away from the base body 2). be able to. In addition, since the fusion fixing part 41 is formed in the extending part 50 protruding from the outer periphery of the wing body part 5, the adjacent artificial feathers 3 are arranged between the wing body parts 5 viewed from the extending direction of the shaft 7. The formed angle (twist angle) can be made sufficiently large. That is, a shape close to that of a natural shuttlecock can be realized.

In addition, the shape of the extension part 50 is not restricted to the shape as shown in FIG. 63, It can be set as other arbitrary shapes. For example, in order to sufficiently increase the size of the fusion fixing portion 41, the width of the distal end portion (the end portion in the direction away from the shaft 7) of the extending portion 50 is larger than the width of other portions in the extending portion 50. It may be. Further, in the wing body portion 5, the one side portion as viewed from the shaft 7 is larger than the other side portion as a whole (the width of the one side portion in the direction intersecting the shaft 7 is the width of the other side portion). As a configuration (which is larger), a portion extending to a position beyond the axis 7 of another adjacent artificial feather 3 in the one side portion may be used as the extending portion 50. Further, the fusion fixing portion 41 may be arranged at a position not exceeding the shaft 7 as in the shuttlecock 1 shown in FIGS. 42 and 43.

A modification of the thirteenth embodiment of the shuttlecock according to the present invention will be described with reference to FIG.

The shuttlecock 1 shown in FIG. 64 basically has the same configuration as the shuttlecock 1 shown in FIG. 62 except that an inner thread 17 is installed. The inner thread 17 can be arranged in the same manner as the inner thread 17 installed in the shuttlecock 1 shown in FIGS. 45 and 46. If it does in this way, in addition to the effect by the shuttlecock 1 shown in FIG. 62, it can suppress that the wing | blade main-body part of the artificial feather 3 bends to the inner peripheral side (side in which the inner thread | yarn 17 is located). As a result, it is possible to more reliably suppress the occurrence of a problem that characteristics such as air resistance of the shuttlecock 1 are greatly changed. 64 shows an example in which the inner thread 17 is applied to the shuttlecock 1 shown in FIG. 62. However, the shuttlecock 1 shown in FIG. 62 is shown in the middle thread 15 shown in FIG. An outer thread 19 or the like may be installed. Further, these middle thread 15, inner thread 17 and outer thread 19 may be applied to the shuttlecock 1 shown in FIG. 62 in any combination.

Further, in the shuttlecock 1 shown in FIGS. 62 and 64, the fusion fixing part 41 is formed as a fixing part between the extension part 50 and the wing body part 5 of the other artificial feather 3; An adhesive fixing portion 51 using an adhesive member 53 as shown in 53 may be formed.

In the seventh to thirteenth embodiments described above, the configuration of the base main body 2 is the same as the configuration of the base main body 2 in the first embodiment. However, these seventh to thirteenth embodiments are not described. Any of the base main bodies 2 shown in the second to sixth embodiments may be applied.

(Example)
A shuttlecock according to the present invention was produced as follows, and its flight performance and durability were evaluated.

(Sample preparation)
Fabrication of artificial feathers:
First, similarly to the manufacturing method shown in FIG. 38, a laminated sheet preparation step (S60) was performed. Specifically, a polyester non-woven fabric (weighing 30 g / m ² , thickness 0.2 mm) and a polyethylene foam sheet (thickness 1.0 mm) were prepared as a sheet-like member. Thus, by making a sheet-like member into a laminated structure, a nonwoven fabric has the effect which improves the adhesiveness of a sheet-like member and an axis | shaft, and resin layers, such as a foam sheet, improve the shape retention function (deformation prevention function) of a blade | wing. Has an effect. The nonwoven fabric also has a role as a base material on which the foam sheet is bonded. And this sheet-like member was installed in the inside of a metal mold | die. And the metal mold | die with which the sheet-like member was arrange | positioned inside was arrange | positioned in the state which can inject | pour the resin which comprises a shaft in the inside. Thereafter, nylon resin was injected into the mold as the shaft resin. As a result, the shaft was formed in a state in which it was fixed in contact with a sheet-like member made of a laminated sheet inside the mold. Next, the sheet-like member with the shaft connected and fixed was taken out from the inside of the mold. And the unnecessary part of the said sheet-like member was cut | judged, and the artificial feather | wing as shown in FIG. 33 was obtained. The length of the artificial feather was 74 mm, and the maximum width of the feather body 5 was 18 mm. Here, the maximum width of the wing body 5 means the maximum width in the direction perpendicular to the axis in the wing body 5 (lateral direction in FIG. 33).

Next, as the base body, a base body made of an ionomer foam and having the convex portions 61 shown in FIGS. 1 to 3 was prepared. The height of the convex portion 61 (height from the outer peripheral surface of the fixing surface portion) is 2 mm, and a plurality of insertion holes for inserting the artificial feather shaft into the outer peripheral portion of the convex portion 61 are drilled. Formed. The arrangement of the insertion holes was the same as the arrangement of the insertion holes in the base body shown in FIG.

Then, the shaft of the artificial feather was inserted into the insertion hole of the prepared base body. As a result, a plurality of artificial feathers were arranged in an annular shape. At this time, in the artificial feather, the artificial feather was arranged so that the foam sheet of the feather main body portion was directed to the outer peripheral side of the shuttlecock. Then, in the vicinity of the insertion hole in which the shaft of the artificial feather is inserted, the adhesive is extended from the upper surface of the convex portion 61 to the outer peripheral portion of the fixing surface portion through the side wall of the convex portion and the shaft surface. Applied. Nitrified cotton was used as the adhesive.

Next, the thread is arranged so that the shafts of the artificial feathers arranged in a ring are fixed to each other. As with the shuttlecock shown in FIG. As the warp yarn, a yarn made of aramid fiber was used. A polyester yarn may be used as the warp yarn. And the thermosetting resin was apply | coated to the said thread, and the said thermosetting resin was hardened by heating. As a result, a fixing string-like body formed into FRP by the warp yarn and the thermosetting resin was formed. An epoxy resin was used as the thermosetting resin.

Moreover, the foam sheet of the sheet-like member constituting the artificial feather contracted by this heating. As a result, since the foam sheet was disposed so as to face the outer peripheral side of the shuttlecock, the artificial feathers (shaft and wing body part) were warped toward the outer peripheral side of the shuttlecock. The shape of the artificial feather is similar to the shape of a natural waterfowl feather, and the shape of the shuttlecock is more preferable.

Thereafter, a coating agent was further applied to the surface of the FRP-formed fixing string. Nitrified cotton was used as the coating agent. As a result, it is possible to further increase the strength of the FRP-fixed fixing string.

Thereafter, similarly to the shuttlecock 1 shown in FIGS. 39 to 41, a middle thread 15 (see FIG. 41) for preventing the artificial feathers 3 from intermingling was installed. A polyester yarn (50 count) was used as the middle yarn.

(test)
The prepared shuttlecock as an example was subjected to a striking test and subjected to a sensory evaluation by a tester for flight characteristics and durability.

(result)
The flight characteristics of the shuttlecock as an example were almost the same as the flight characteristics of a natural shuttlecock using waterfowl feathers. As for durability, as a result of endurance test with high clear 250 times and smash 20 times, there was almost no remarkable change in shape and drastic change in flight characteristics, and it showed sufficiently high durability. .

Although there are portions that partially overlap the above-described embodiment, the characteristic configurations of the present invention are listed below.

The shuttlecock base body 2 according to the present invention includes a fixing surface portion (a surface on the side where the insertion hole 63 is formed in the base body 2) for fixing the shaft 7 of the artificial feather 3 as a shuttlecock blade. In the shuttlecock base body, the fixing surface portion includes a plurality of insertion holes 63 for inserting and fixing the shaft 7, and a convex portion adjacent to the insertion hole 63 and protruding from the surface of the fixing surface portion ( A convex portion 61 or an elastic member 71) is formed.

In this way, when the adhesive 64 as the adhesive member is disposed in a state where the shaft 7 is inserted into the insertion hole 63, the protrusion adjacent to the insertion hole 63 from the inside of the insertion hole 63 (that is, adjacent to the shaft 7). The adhesive 64 can be extended onto the portion 61. For this reason, compared with the case where the convex part 61 does not exist, while the area of the adhesive surface of the adhesive 64 and the base main body 2 can be enlarged, the shape of an adhesive surface becomes a three-dimensional shape. For this reason, the adhesive strength between the adhesive 64 and the base body 2 and the shaft 7 of the artificial feather 3 can be improved.

In the shuttlecock base body 2, the plurality of insertion holes 63 may be circumferentially arranged on the fixing surface portion. As shown in FIGS. 1 and 2, the convex portion 61 or the elastic member 71 may be formed adjacent to the inner peripheral side of the plurality of insertion holes 63 arranged circumferentially.

In this case, when the adhesive 64 is disposed in a state where the shaft 7 is inserted into the insertion hole 63, the convex adjacent from the inside of the insertion hole 63 to the inner peripheral side of the insertion hole 63 (that is, adjacent to the outer peripheral side surface of the shaft 7). The adhesive 64 can be extended to the part 61 or the elastic member 71. Therefore, when stress is applied from the outer peripheral side to the artificial feather 3 arranged annularly by inserting the shaft 7 into the insertion hole 63, a reinforcing member that suppresses the shaft 7 from being greatly deformed to the inner peripheral side. The convex part 61 or the elastic body member 71 acts. For this reason, the durability of the shuttlecock 1 can be further improved.

In the shuttlecock base body 2, as shown in FIG. 2 and FIG. 28, the convex portion 61 may be integrated with the fixing surface portion. In this case, since the convex portion 61 is integrated with the fixing surface portion (that is, the base main body 2), the base portion is compared with the case where the convex portion 61 is adhered to the fixing surface portion of the base main body 2 later. The manufacturing process of the main body 2 can be simplified. Further, since the fixing surface portion and the convex portion 61 are integrated, the strength of the convex portion 61 (the convex portion 61 and the fixing surface are compared with the convex portion that is formed by bonding to the fixing surface portion later). Strength between the two parts) can be sufficiently increased.

In the shuttlecock base body 2, the convex portion may be formed by joining a member (elastic body member 71) to be a convex portion to the fixing surface portion as shown in FIG.

In this case, since the elastic member 71 as the convex portion is constituted by a member different from the fixing surface portion (that is, the base main body 2), the convex portion (elastic member 71) is independent of the material of the base main body 2. The material can be determined. Therefore, for example, an elastic body having a characteristic different from that of the base body 2 can be used as the material of the convex portion in order to buffer the impact applied to the shaft 7. For this reason, the freedom degree of design of the base main body 2 can be enlarged.

In the shuttlecock base body 2, the convex portion (elastic body member 71) may be formed of an elastic body. In this case, since the convex portion is constituted by an elastic body, the elastic body member 71 as the convex portion effectively acts as a buffer material for buffering the impact applied to the shaft 7. For this reason, the durability of the shuttlecock 1 using the base body 2 can be further improved.

In the shuttlecock base body 2, the surface (side walls 62, 72) facing the insertion hole 63 in the convex portion 61 or the elastic member 71 is formed to extend in a direction along the extending direction of the insertion hole 63. May be.

In this case, when the shaft 7 of the artificial feather 3 is inserted into the insertion hole 63, the convex portion 61 or the

side walls

62 and 72 of the elastic member 71 are in a state along the shaft 7. For this reason, when the shaft 7 is fixed to the base body 2 with the adhesive 64 or the like, the adhesive 64 can easily connect the convex portion 61 along the shaft 7 or the

side walls

62 and 72 of the elastic member 71 and the shaft 7. Can be fixed to. For this reason, the fixing strength of the shaft 7 can be further increased.

In the shuttlecock base body 2, the surface (side walls 62, 72) facing the insertion hole 63 in the convex portion 61 or the elastic member 71 is, for example, as shown in FIG. 28 with respect to the surface of the fixing surface portion. You may form so that it may extend in a perpendicular direction. Here, the direction perpendicular to the surface of the fixing surface means the convexity that faces the insertion hole in a cross section that passes through the center of the fixing surface and is perpendicular to the surface of the fixing surface. This includes not only the case where the surface of the portion is in the direction perpendicular to the surface of the fixing surface, but also the case where the inclination angle of the surface of the convex portion is 5 ° or less in absolute value relative to the perpendicular direction.

In this case, for example, when the convex portion 61 is formed by cutting the fixing surface portion of the base body 2, the convex portion 61 is more than the case where the surface of the convex portion 61 is inclined with respect to the fixing surface portion. Can be easily processed. Also, when the elastic member 71 is prepared, the elastic member 71 can be processed more easily than when the side wall 72 of the elastic member 71 is inclined.

The shuttlecock base main body 2 according to the present invention is a shuttlecock base main body having a fixing surface portion for fixing the shaft 7 of the artificial feather 3, and includes a fixing surface portion (for example, the insertion hole 63 in FIG. On the formed surface), the planar shape is a circumferential recess (the protrusion 61 or the recess of the base body 2 positioned around the elastic member 71), and the side wall of the recess (the side wall 62 of the protrusion 61). Alternatively, a plurality of insertion holes 63 for inserting and fixing the shaft 7 of the artificial feather 3 which is a shuttlecock blade are arranged circumferentially adjacent to the side wall 72) of the elastic member 71.

In this way, when the adhesive 64 is disposed to fix the shaft 7 to the base body 2 with the shaft 7 inserted into the insertion hole 63, the insertion hole 63 is adjacent to the insertion hole 63 (that is, the insertion hole 63 is inserted). The adhesive 64 can be extended to the concave side wall (the convex portion 61 or the

side walls

62 and 72 of the elastic member 71) adjacent to the shaft 7 inserted into the hole 63. For this reason, the area of the bonding surface between the adhesive 64 and the base body 2 can be increased as compared with the case where the insertion hole 63 is simply formed in the plane. Furthermore, since the shape of the bonding surface is a three-dimensional shape, the bonding strength between the shaft 7 and the base body 2 can be improved.

A shuttlecock 1 for badminton according to the present invention includes a shuttlecock blade in which a shaft 7 is inserted and fixed in the shuttlecock base body 2 and a plurality of insertion holes 63 formed in a fixing surface portion of the base body 2. And an artificial feather 3.

In this way, when the artificial cock 3 is stressed from the outside when the shuttlecock 1 is used, the convex part 61 or the elastic member 71 can be used as a reinforcing part that supports the shaft 7 of the artificial feather 3. For this reason, the shuttlecock 1 excellent in durability is realizable.

In the badminton shuttlecock 1, the shuttlecock blade may be an artificial feather 3 including a wing portion and a shaft 7 connected to the wing portion. The shaft 7 may include a fixed shaft portion 10 and a wing shaft portion 8 connected to the fixed shaft portion 10. The sheet-

like members

9 and 90 which are members constituting the wing part are in contact with the fixed shaft part 10 and wider than the fixed shaft part 10, and the protrusion protruding from the wing main body part 5 to the wing shaft part 8. Part 12 may be included. The end of the protruding part 12 opposite to the wing body part 5 side may be embedded in a member constituting the wing shaft part 8.

In this case, the wing body 5 is brought into contact with and fixed to the fixed shaft 10, and the protrusions 12 of the sheet-

like members

9 and 90 that are members constituting the wing are embedded in the member constituting the wing shaft 8. Therefore, the joint strength between the wing portion and the shaft 7 can be increased. In addition, since the projecting portions 12 of the sheet-

like members

9 and 90 that are members constituting the wing portion are embedded in the wing shaft portion 8, the embedded projecting portions 12 are used to reinforce the wing shaft portion 8. Acts as a member. Therefore, the junction between the wing body 5 and the wing shaft portion 8 and the durability of the wing shaft portion 8 can be sufficiently enhanced. Moreover, since the wing body part 5 also acts as a reinforcing member for the fixed shaft part 10, the durability of the fixed shaft part 10 can also be improved. For this reason, the shuttlecock 1 can be comprised using the artificial feather | wing 3 for shuttlecocks which has high durability. Further, the shaft 7 of the artificial feather 3 is often inferior in strength to the shaft of the natural shuttlecock blade, but by using the convex portion 61 or the elastic member 71 of the base body 2 described above as a reinforcing member, The durability of the shaft 7 of the artificial feather 3 can be improved. That is, the base body 2 of the present invention is particularly effective in a shuttlecock using artificial feathers.

The protruding portion 12 may extend to the lower end of the wing shaft portion 8 (the end portion of the wing shaft portion 8 on the side opposite to the wing body portion 5 side), but halfway before reaching the lower end. It may be possible to exist up to the region. For example, the protrusion 12 may be present in a range of 50% or more, more preferably 80% or more of the entire length of the wing shaft part 8.

In the artificial feather 3 for the shuttlecock, in the sheet-

like members

9 and 90 constituting the wing portion, the wing body portion 5 and the protruding portion 12 are constituted by a series of members. In this way, the shaft 7 can be more reliably reinforced by the sheet-

like members

9 and 90. In particular, since the sheet-

like members

9 and 90, which are a series of members, are arranged at the boundary portion between the blade shaft portion 8 and the fixed shaft portion 10 of the shaft 7, the strength of the boundary portion can be reliably reinforced.

In the artificial feather 3, the sheet-

like members

9 and 90 constituting the wing part are disposed inside or on the surface layer of the shaft 7 at the connection portion with the shaft 7, and as shown in FIGS. The portion in contact with the shaft (the portion embedded in the shaft 7 or the portion fixed in contact with the surface layer of the shaft 7) may be bent or curved. In this way, the contact area between the sheet-

like members

9 and 90 and the members constituting the shaft 7 can be increased, so that the connection strength between the sheet-

like members

9 and 90 and the shaft 7 can be improved. Therefore, the strength and durability of the artificial feather 3 can be improved. Here, the portion of the sheet-

like members

9 and 90 that contacts the shaft 7 is bent or curved, as shown in FIG. 8 and the like, the portion of the sheet-

like members

9 and 90 that contacts the shaft 7 draws a curve. Not only in the case of being bent (curved) as described above, but also including a state where the portions of the sheet-

like members

9, 90 are bent (bent) so as to have clear corners, The number of bent portions (corner portions) of the sheet-

like members

9 and 90 at the portion is not limited to one, and may be two or more.

In the artificial feather 3, the contact portion of the wing portion that is in contact with the shaft 7 is, as shown in FIG. 5, the root portion side of the shaft 7 on the wing shaft portion 8 side to the fixed shaft portion 10 side. The position of the contact portion in the shaft 7 may change so as to be gradually exposed to the surface layer of the shaft 7 from the state embedded in the shaft 7 toward the tip portion side which is the end portion of the shaft 7. In this way, the area of the contact portion between the shaft 7 and the sheet-

like members

9 and 90 can be made larger than in the state where the entire contact portion is embedded in the shaft 7. For this reason, the connection strength between the sheet-

like members

9 and 90 and the shaft 7 can be improved. As a result, the strength of the artificial feather 3 can be further improved, and the sheet-

like members

9 and 90 can be prevented from peeling off from the shaft 7 as much as possible (durability can be improved).

In the artificial feather 3, the fixing shaft portion 10 is the other end portion located on the side opposite to the one end portion from the one end portion on the wing body portion 5 where the fixing shaft portion 10 is connected to the wing shaft portion 8. It may extend to. In this case, at the other end of the wing body part 5 (the tip side of the artificial feather 3), the sheet-

like members

9 and 90 constituting the wing body part 5 are embedded in the fixed shaft part 10. The area of the sheet-

like members

9 and 90 constituting the wing main body 5 in contact with the fixed shaft portion 10 can be increased. For this reason, the sheet-like member 9 constituting the wing body portion 5 at the other end portion (tip portion) of the fixing shaft portion 10, in which the strength is a problem in the connection portion between the fixing shaft portion 10 and the wing body portion 5. , 90 can be further enhanced in connection strength between the wing body 5 and the fixed shaft 10 than in the state where the fixed shaft 10 is embedded in the fixed shaft 10.

Further, since the artificial feather 3 described above reinforces the shaft 7 by the series of sheet-

like members

9 and 90, a notch portion where stress tends to concentrate on the shaft 7 is not formed, and is excellent in durability. Moreover, since the whole shaft 7 exhibits a state of natural bending and bending due to the configuration in which the sheet-

like members

9 and 90 are disposed on the entire shaft 7, the shuttlecock 1 using the artificial feather 3 is excellent in flight performance. Further, since the protruding portion 12 which is a part of the sheet-

like members

9 and 90 constituting the wing main body portion 5 is embedded in the wing shaft portion 8, the connection strength between the wing main body portion 5 and the wing shaft portion 8 is increased. Will also improve.

The artificial feather 3 may further include

flap portions

31 and 33 protruding from the side surface of the wing shaft portion 8. In this way, it is possible to control the flight characteristics of the shuttlecock 1 not only in the wing body 5 but also in the

flaps

31 and 33. Specifically, by controlling the shapes and sizes of the

flap portions

31 and 33, even when the wing body portion 5 of the shuttlecock 1 is deformed by a racket, the shuttlecock 1 flies to a certain extent. The rotation performance at the time can be maintained.

In the artificial feather 3, the

flap portions

31 and 33 may be part of the protruding portion 12. In this case, since the

flap portions

31 and 33 can be formed simultaneously with the formation of the protruding portion 12, the manufacturing process of the artificial feather 3 can be simplified as compared with the case where the flap portion is separately installed on the artificial feather 3 later.

As shown in FIG. 12, the method for manufacturing an artificial feather for a shuttlecock according to the present invention includes a step of preparing a sheet-like member (nonwoven fabric preparation step (S10) or laminated sheet preparation step (S60)), and a sheet-like member. A sheet-like member 9 included in a step (resin injection step (S40)) for forming a linear elastic body so as to adhere to the sheet-like member on the surface of the sheet, and a cutting step (post-treatment step (S50)), 90 unnecessary portions (steps of cutting and removing the portions other than the portion 6 to be the wing body portion). In the cutting step, by cutting the sheet-

like members

9 and 90, the wing shaft portion 8 of the shaft 7 made of an elastic body formed in a linear shape, and the wing body consisting of the sheet-

like members

9 and 90 connected to the shaft 7 Part 5 is formed. In this way, the artificial feather 3 according to the present invention can be easily formed.

As shown in FIG. 13, the badminton shuttlecock 1 according to the present invention includes a hemispherical base body 2 included in the preparation step (S100) and a preparation step (S100). A step of manufacturing the shuttlecock artificial feather 3 using the method for manufacturing the shuttlecock artificial feather, and a step of connecting the shuttlecock artificial feather to the base body 2 (an assembly step (S200)). . In this way, the badminton shuttlecock 1 according to the present invention can be easily obtained.

In addition, as a material of the sheet-like member 9 constituting the wing body 5 or the like, any fiber can be used. Also, any resin can be used as the material of the shaft 7. For example, as the material of the shaft 7, polyamide resin, polyester resin, polycarbonate resin, polyimide resin, polysulfone resin, or a composite plastic obtained by mixing glass fiber, carbon fiber, or the like can be used.

Further, the protruding portion 12 embedded in the wing shaft portion 8 may be in a state in which the end portion thereof partially protrudes from the side surface of the wing shaft portion 8. By adopting such a configuration, it is possible to adjust the air resistance of the artificial feather 3 also in the wing shaft portion 8. Further, when the shaft 7 of the adjacent artificial feather 3 is tied and connected by the fixing string-like member, for example, if the

flap portions

31 and 33 and the edge portion 32 as shown in FIGS. When the shaft 7 is tied by the fixing string-like member, the edge 32 or the like is deformed by the fixing string-like member, and as a result, the contact area between the fixing string-like member and the shaft 7 including the edge 32 or the like is increased. Will increase. As a result, the shaft 7 can be reliably fixed by the fixing string-like member. Further, when the fixing string-like member is impregnated and cured to make the fixing string-like member into FRP, since the resin also impregnates the edge portion 32 and the like, the fixing string-like member and the shaft 7 are more Connection can be strengthened.

In the badminton shuttlecock 1, the member constituting the wing may be a sheet-like member 90 having a multilayer structure. In this case, for example, as shown in FIG. 34 to FIG. 37, by using a nonwoven fabric 91 and a resin layer 92 such as a resin film as a material of a layer constituting a multilayer structure, for example, a nonwoven fabric as a sheet-like member 9 constituting a wing portion. The strength of the wings can be increased as compared with the case of using only. That is, the multi-layer structure can increase the degree of freedom in designing the sheet-like member 90 constituting the wing portion.

Moreover, when the nonwoven fabric 91 and the resin layer 92 are used as a material of the layer which comprises a multilayer structure as mentioned above, durability of the artificial feather | wing 3 of a shuttlecock is improved rather than the case where a feather | wing part is formed only with a nonwoven fabric. be able to. Further, deformation of the wing portion can be suppressed, and durability can be improved.

Further, as shown in the above-described seventh to thirteenth embodiments, the sheet-like member 90 constituting the wing portion is a multi-layered member (for example, a relatively low-strength film material such as a nonwoven fabric 91, a resin layer 92, etc. A member coated with a material having a relatively high strength is used, and the material constituting the resin layer 92 contracts when heated. At this time, the artificial feather is fixed to the base body 2 so that the resin layer 92 of the wing portion of the artificial feather 3 faces the outer peripheral side in the shuttlecock 1. The resin layer 92 contracts by applying predetermined heat to the artificial feather 3. As a result, the artificial feather 3 is warped outward, and the shape of the artificial feather 3 is relatively close to a natural feather. As the step of applying such heat, a heating step for curing the resin, for example, when the fixing string-like body for fixing the shaft 7 of the artificial feather 3 is made into FRP can be used. In this case, the shape of the artificial feather 3 can be made closer to a natural feather without adding a special process.

The badminton shuttlecock 1 may further include a string-like body (medium thread 15, inner thread 17, outer thread 19) that regulates relative movement or deformation of the wings of the plurality of artificial feathers 3. In this case, crossing of the wings can be prevented.

Further, the badminton shuttlecock 1 according to the present invention includes the above-described hemispherical base body 2 and a plurality of artificial feathers 3. The plurality of artificial feathers 3 include a wing part and a shaft 7 connected to the wing part. The plurality of artificial feathers 3 are fixed to the base body 2 so as to be arranged in an annular shape and partially overlap. Fusion as a fusion part for fixing the overlapping part of the wings as shown in FIGS. 42 and 43 by melting and then solidifying at least a part of the overlapping parts of the wings of the artificial feather 3 A fixing portion 41 is formed.

In this case, in addition to the above-described effects due to the shape of the base body 2, the artificial feather 3 having the shaft 7 having lower rigidity and strength than the waterfowl feather (natural feather) constituting the natural shuttlecock is used. Even so, the laminated state and shape of the artificial feather 3 can be maintained as they are by forming the fusion fixing portion 41 that acts as the fusion portion. For this reason, it can suppress that the flight performance of the shuttlecock 1 deteriorates resulting from the laminated state of the artificial feather 3 being switched or the artificial feather 3 being deformed.

Also, the fusion fixing part 41 functions as a strength member because the adjacent artificial feathers 3 are fixed to each other in order to maintain the laminated state of the plurality of artificial feathers 3. For this reason, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.

Further, by melting and re-solidifying at least a part of the laminated portion of the artificial feather 3, the fusion fixing portion 41 can be formed without performing prior arrangement of an adhesive or the like. For this reason, the manufacturing process of the shuttlecock 1 can be simplified.

In the badminton shuttlecock 1, at least a part of the fusion fixing portion 41 has an end of the shaft 7 and the end of the wing portion in the width direction which is a direction perpendicular to the shaft 7 of the wing portion, as shown in FIGS. 47 and 62. You may form in the area | region near the axis | shaft 7 from the intermediate point between parts. Specifically, as shown in FIG. 47 and the like, when the extension part 50 as shown in FIG. 62 is not formed in the wing body part 5, at least a part of the fusion fixing part 41 is shown in the wing body part 5. 47 is preferably formed in a region surrounded by the line segment 24 and the shaft 7. 62, when the extension part 50 is formed in the wing body part 5, at least a part of the fusion fixing part 41 formed in the extension part 50 is not shown in the wing body part 5. It is preferable to be located in a region surrounded by the line segment 24 and the shaft 7 shown in 62. Further, it is more preferable that the fusion fixing portion 41 is formed inside a region surrounded by the shaft 7 and the line segment 24. In this case, the portion of the wing portion outside the fusion fixing portion 41 in the artificial feather 3 has a sufficient width, and the twist angle of the artificial feather 3 can be maintained.

In the badminton shuttlecock 1, the fusion fixing portion 41 is positioned between the wing body portions 5 at the overlapping portions of the adjacent wing body portions 5 and is fixed to the wing body portion 5. May be included. In this case, even if the thickness of the laminated portion of the artificial feather 3 is thin, the strength of the fusion fixing portion 41 can be sufficiently increased by arranging the reinforcing member 43.

In the badminton shuttlecock 1, the reinforcing member 43 may be fixed to the wing body 5 by being solidified after being melted.

In the badminton shuttlecock 1, the planar shape of the fusion fixing portion 41 may be one selected from the group consisting of a polygonal shape, a circular shape, an oval shape, and an elliptical shape. In the badminton shuttlecock 1, the planar shape of the fusion fixing portion 41 may be a quadrilateral shape, a trapezoidal shape, a triangular shape, a polygonal shape of pentagon or more, or any other shape. Further, in the fusion fixing portion 41 having a polygonal planar shape, the corner portion may be a curved surface. The oval shape means a shape in which a semicircle is connected to two opposite sides of the rectangle (a shape like a track in an athletics), and a shape in which the rectangle is bent. Including.

In the badminton shuttlecock 1, the fusion fixing portion 41 may be composed of a plurality of fusion portion portions. In the badminton shuttlecock 1, the fusion fixing portion 41 may be composed of a plurality of dot-like fusion portion portions.

The badminton shuttlecock 1 further includes string-like bodies (medium thread 15, inner thread 17, and outer thread 19) that regulate relative movement or deformation of the wing body 5 in the plurality of artificial feathers 3. Also good. In this case, by restricting the relative movement or deformation of the artificial feather 3 by the string-like bodies (the middle thread 15, the inner thread 17, and the outer thread 19), the laminated state of the plurality of artificial feathers 3 is reliably maintained. be able to. Further, since a very thin thread (for example, a cotton thread or a resin thread such as polyester) can be used as the string-like body, a string-like body having a small mass or occupied volume can be used. For this reason, the change of the gravity center position, balance, etc. of the shuttlecock 1 by arrange | positioning the said string-like body can be made small as much as possible.

In the badminton shuttlecock 1, the string-like body circulates around the respective shafts 7 (preferably the fixing shaft portions 10) of the plurality of artificial feathers 3, and the feathers of the plurality of artificial feathers 3 arranged in an annular shape. An inner thread 17 as another string member disposed on the inner peripheral side of the main body 5 is included. In this case, since the inner thread 17 is arranged along the inner peripheral side of the plurality of artificial feathers 3, the wing body portion 5 of the artificial feather 3 is placed on the inner peripheral side while the shuttlecock 1 is being used. Bending can be suppressed by the inner thread 17. For this reason, it is possible to prevent the flight performance of the shuttlecock 1 from being changed due to bending of the wings. As a result, the flight performance of the shuttlecock 1 using the artificial feather 3 can be stabilized and the durability can be improved.

In the badminton shuttlecock 1, the wing part of the artificial feather 3 (specifically, the wing body part 5 constituting the wing part) protrudes outward from the outer peripheral part of the wing part as shown in FIGS. In addition, it may include an extending portion 50 that extends to a position where it overlaps with a wing portion of the other artificial feather 3 arranged in a ring shape (specifically, a wing body portion 5 of the other artificial feather 3). . The fusion fixing part 41 may be formed in the extending part 50. In this case, the laminated state and shape of the artificial feather 3 can be maintained as they are, and the degree of freedom of deformation of the artificial feather 3 can be increased. Therefore, it is possible to realize a twist angle close to the twist angle of the blades in the natural shuttlecock while ensuring durability, so that the flight characteristics can be brought close to those of the natural shuttlecock.

In the badminton shuttlecock 1, as shown in FIG. 62 or 64, the extending part 50 may extend from the outer peripheral part of the wing part to a position beyond the axis 7 of the other artificial feathers. The fusion fixing part 41 may be formed in the extended part 50 at a position beyond the axis 7 of the other artificial feather 3.

In the badminton shuttlecock 1, the wing portion of the artificial feather 3 may include an extending portion 50 that extends to a position beyond the axis 7 of another artificial feather arranged in an annular shape. The fusion fixing part 41 may be formed at a position beyond the axis 7 of the other artificial feather 3 in the extending part 50. In this case, the twist angle of the adjacent artificial feather 3 can be made sufficiently large as much as the twist angle in the natural shuttlecock.

A badminton shuttlecock 1 according to the present invention includes the above-described hemispherical base body 2 and a plurality of artificial feathers 3. The plurality of artificial feathers 3 include a wing part and a shaft 7 connected to the wing part. The plurality of artificial feathers 3 are arranged in an annular shape and are fixed to the base body 2 so that adjacent wings partially overlap. An adhesive fixing portion 51 is formed as an adhesive portion in which at least a part of overlapping portions of the wing portion of the artificial feather 3 is connected by an adhesive layer (adhesive member 53).

In this case, in addition to the effect resulting from the shape of the base body 2 described above, the artificial feather 3 having the shaft 7 having lower rigidity and strength than the waterfowl feather (natural feather) constituting the natural shuttlecock is used. Even so, by forming the adhesive fixing portion 51, the laminated state and shape of the artificial feather 3 can be maintained as they are. For this reason, it can suppress that the flight performance of the shuttlecock 1 deteriorates resulting from the laminated state of the artificial feather 3 being switched or the artificial feather 3 being deformed.

In addition, since the adhesive fixing part 51 maintains the laminated state of the plurality of artificial feathers 3 and fixes adjacent artificial feathers 3 to each other, it also acts as a strength member. For this reason, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.

Moreover, the adhesive fixing part 51 for easily maintaining the laminated state of the artificial feather 3 is formed by arranging the adhesive member 53 at a predetermined position and arranging the plurality of artificial feathers 3 to overlap each other. can do. For this reason, the manufacturing process of the shuttlecock 1 can be simplified.

In the badminton shuttlecock 1, at least a part of the adhesive fixing portion 51 is closer to the shaft 7 than an intermediate point between the shaft 7 and the end portion of the wing portion in the width direction that is a direction perpendicular to the shaft 7 of the wing portion. It may be formed in this area. In this case, the portion of the wing portion outside the adhesive fixing portion 51 in the artificial feather 3 has a sufficient width, and the twist angle of the artificial feather 3 can be maintained.

In the badminton shuttlecock 1, the wing part of the artificial feather 3 (specifically, the wing body part 5 constituting the wing part) protrudes outward from the outer peripheral part of the wing part as shown in FIGS. In addition, it may include an extending portion 50 that extends to a position where it overlaps with a wing portion of the other artificial feather 3 arranged in a ring shape (specifically, a wing body portion 5 of the other artificial feather 3). . The adhesive fixing part 51 may be formed in the extending part 50. In this case, a torsion angle close to the torsion angle of the blades in the natural shuttlecock can be realized while ensuring durability, so that the flight characteristics can be made closer to the natural shuttlecock.

In the badminton shuttlecock 1, as shown in FIG. 62 or 64, the extending part 50 may extend from the outer peripheral part of the wing part to a position beyond the axis 7 of the other artificial feathers. The adhesive fixing portion 51 may be formed at a position beyond the axis 7 of the other artificial feather 3 in the extending portion 50.

In the badminton shuttlecock 1, the wing portion of the artificial feather 3 may include an extending portion 50 that extends to a position beyond the axis 7 of another artificial feather arranged in a ring shape. The adhesive fixing portion 51 may be formed at a position beyond the axis 7 of the other artificial feather 3 in the extending portion 50. In this case, the twist angle of the adjacent artificial feather 3 can be made sufficiently large as much as the twist angle in the natural shuttlecock.

The shuttlecock for badminton according to the present invention includes a hemispherical base body 2, a plurality of artificial feathers 3, and a string-like body (medium thread 15, inner thread 17, and outer thread 19. 1). The plurality of artificial feathers 3 include a wing part and a shaft 7 connected to the wing part. The plurality of artificial feathers 3 are arranged in an annular shape and are fixed to the base body 2 so that adjacent wings partially overlap. The string-like bodies (medium thread 15, inner thread 17, and outer thread 19) regulate relative movement or deformation of the wings in the plurality of artificial feathers 3.

In this case, in addition to the effect resulting from the shape of the base body 2 described above, the artificial feather 3 having the shaft 7 having lower rigidity and strength than the waterfowl feather (natural feather) constituting the natural shuttlecock is used. Even so, the laminated state and shape of the artificial feather 3 can be maintained as they are by arranging the middle thread 15 and the inner thread 17 as string-like bodies. For example, it is possible to prevent the stacking order of the artificial feathers 3 from being changed by arranging the middle thread 15 between the stacked portions of the artificial feathers 3. Further, by arranging the inner thread 17 along the inner peripheral side of the plurality of artificial feathers 3, it is understood that the wing portion of the artificial feather 3 is bent toward the inner peripheral side while the shuttlecock 1 is used. 17 can be suppressed. For this reason, it can suppress that the flight performance of the shuttlecock 1 deteriorates resulting from the laminated state of the artificial feather 3 being switched or the artificial feather 3 being deformed.

Further, the middle thread 15 and the inner thread 17 as the string-like bodies also act as strength members because the shafts 7 of the adjacent artificial feathers 3 are fixed to each other in order to maintain the laminated state of the plurality of artificial feathers 3. For this reason, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved. In addition, since extremely thin threads can be used as the string-like body, changes in the center of gravity position, balance, total mass, etc. of the shuttlecock 1 due to the arrangement of the middle thread 15 and the inner thread 17 are minimized. Can do.

In the badminton shuttlecock 1, the string-like body constitutes a sewn portion (a portion fixed by the fixing thread 81) by sewing at least a part of the overlapping portion of the wing portion of the artificial feather 3. May be. In this case, it is possible to suppress a change in the stacking order and arrangement of the artificial feathers 3 by sewing the artificial feathers 3 together (sewing with the fixing thread 81). That is, the laminated state of the plurality of artificial feathers 3 can be reliably maintained.

In the badminton shuttlecock 1, at least a part of the sewn portion (the portion fixed by the fixing thread 81) is the shaft 7 and the end portion of the wing portion in the width direction that is a direction perpendicular to the shaft 7 of the wing portion. It may be formed in a region closer to the axis 7 than the intermediate point between them. In this case, the portion of the wing portion outside the sewing portion in the artificial feather 3 has a sufficient width, and the twist angle of the artificial feather 3 can be maintained.

A shuttlecock 1 for badminton according to the present invention includes a base body 2 as a hemispherical base body, a plurality of artificial feathers 3, a laminated state fixing portion (medium thread 15, inner thread 17, outer thread 19, and fixing A thread 81, an adhesive fixing portion 51, and a fusion fixing portion 41). The plurality of artificial feathers 3 include a wing part and a shaft 7 connected to the wing part. The plurality of artificial feathers 3 are fixed to the base body 2 so as to be arranged in a ring shape and partially stacked. The laminated state fixing portions (medium yarn 15, inner yarn 17, outer yarn 19, fixing yarn 81, adhesive fixing portion 51, fusion fixing portion 41) are for maintaining the laminated state of the artificial feather 3.

In this case, in addition to the effect resulting from the shape of the base body 2 described above, the artificial feather 3 having the shaft 7 having lower rigidity and strength than the waterfowl feather (natural feather) constituting the natural shuttlecock is used. Even so, since the laminated state of the artificial feather 3 can be maintained as it is by forming the laminated state fixing part, the flight of the shuttlecock 1 is caused by the laminated state of the artificial feather 3 being switched. It can suppress that performance deteriorates. Further, since the laminated state fixing portion maintains the laminated state of the plurality of artificial feathers 3 and relatively fixes the positions of the adjacent artificial feathers 3, it also functions as a reinforcing member. For this reason, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.

In the badminton shuttlecock 1, the stacked state fixing portion is a string-like body (medium yarn 15 and inner yarn 17 or outer yarn 19) that regulates relative movement or deformation of the wings of the plurality of artificial feathers 3. Including. In this case, by restricting the relative movement or deformation of the artificial feather 3 by the string-like bodies (the middle thread 15, the inner thread 17, and the outer thread 19), the laminated state of the plurality of artificial feathers 3 is reliably maintained. be able to. Further, since a very thin thread (for example, a cotton thread or a resin thread such as polyester) can be used as the string-like body, a string-like body having a small mass or occupied volume can be used. For this reason, the change of the gravity center position, balance, etc. of the shuttlecock 1 by arrange | positioning the said string-like body can be made small as much as possible.

In the badminton shuttlecock 1, as shown in FIG. 41, the string-like body circulates around the respective shafts 7 (preferably the fixing shaft portions 10) of the plurality of artificial feathers 3 and the feathers of the artificial feathers 3 A middle thread 15 as a string member disposed so as to pass between the opposing wing body parts 5 in the part of the part overlapping each other (the part overlapping the other artificial feather 3 adjacent in the wing body part 5). In this case, it is possible to prevent the stacking order of the artificial feathers 3 from being changed by arranging the middle thread 15 between the stacked portions of the artificial feathers 3.

In the badminton shuttlecock 1, as shown in FIG. 56, the string-like body circulates around the shafts 7 (preferably the fixing shaft portions 10) of the plurality of artificial feathers 3 and is arranged in an annular shape. An inner thread 17 as another string member arranged on the inner peripheral side of the plurality of artificial feathers 3 is included. In this case, since the inner thread 17 is disposed along the inner peripheral side of the plurality of artificial feathers 3 (the inner peripheral side of the wing body 5 of the artificial feather 3), the shuttlecock 1 is being used. Further, the inner yarn 17 can suppress the wing portion (wing main body portion 5) of the artificial feather 3 from being bent toward the inner peripheral side. For this reason, it is possible to prevent the flight performance of the shuttlecock 1 from being changed due to bending of the wings. As a result, the flight performance of the shuttlecock 1 using the artificial feather 3 can be stabilized and the durability can be improved.

In the badminton shuttlecock 1, as shown in FIGS. 59 to 61, the stacked state fixing portion is a sewn portion (fixed portion) in which at least a part of the overlapping portion of the wing body portion 5 of the artificial feather 3 is sewn. A portion fixed by the thread 81) may be included. In this case, it is possible to suppress a change in the stacking order and arrangement of the artificial feathers 3 by sewing the artificial feathers 3 together (sewing with the fixing thread 81). That is, the laminated state of the plurality of artificial feathers 3 can be reliably maintained.

In the badminton shuttlecock 1, as shown in FIG. 60, the portion fixed by the fixing thread 81 may be formed so as to extend along the shaft 7 of the artificial feather 3. In this case, since the fixing thread 81 for fixing the laminated artificial feathers 3 to each other is arranged so as to extend along the shaft 7, the sewn portion is arranged over a wide range of the wing body portion 5 extending along the shaft 7. Will form. For this reason, the effect which suppresses that the stacking order and arrangement | positioning of the artificial feather 3 change can be acquired more reliably.

In the badminton shuttlecock 1, as shown in FIG. 59, the sewing portion (the portion fixed by the fixing thread 81) may be formed so as to extend in a direction intersecting the axis 7 of the artificial feather 3. . Moreover, it is preferable that the sewing part is formed in a circumferential shape so as to connect at least two of the plurality of artificial feathers 3 arranged in an annular shape, preferably all the artificial feathers 3 are connected. Further, the sewn portion may be formed in a double or triple circumferential shape so as to connect all of the plurality of artificial feathers 3 arranged in an annular shape. In this case, the sewing part which connects two or more (preferably all) artificial feathers 3 in a predetermined stacking order can be easily formed using a sewing machine or the like.

In the badminton shuttlecock 1, as shown in FIG. 59, the sewing portion is formed at a position closer to the base body 2 than the central portion in the extending direction of the shaft 7 at the wing portion (wing body portion 5). May be. In this case, when the shuttlecock 1 is struck by the racket, the rear end portion of the wing body portion 5 where the amount of deformation is relatively large (the region farther from the base body 2 than the center portion in the extending direction of the shaft 7 in the wing body portion 5) Instead of forming the sewn portion with the fixing thread 81 at the position as described above, it is possible to reduce the possibility of the sewn portion being damaged due to impact at the time of impact. Further, since the deformation of the rear end portion of the wing body portion 5 at the time of striking can be prevented from being restricted more than necessary due to the formation of the sewn portion, the flight performance of the shuttlecock 1 is close to that of a natural shuttlecock. can do.

In the badminton shuttlecock 1, as shown in FIG. 52 and FIG. 53, the stacking state fixing portion is formed by adhering at least part of the overlapping portions of the wing body portion 5 of the artificial feather 3 with an adhesive layer (adhesive member 53). The connected adhesion part (adhesion fixing part 51) may be included. The adhesive fixing portion 51 may be formed for all of the stacked portions of the plurality of artificial feathers 3 arranged in an annular shape. In this case, the adhesive fixing portion 51 for easily maintaining the laminated state of the artificial feathers 3 can be provided by arranging the adhesive member 53 at a predetermined position and arranging the plurality of artificial feathers 3 to overlap each other. Can be formed. For this reason, the manufacturing process of the shuttlecock 1 can be simplified.

In the badminton shuttlecock 1, the adhesive fixing portion 51 may be formed so as to extend along the axis 7 of the artificial feather 3. In this case, since the adhesive fixing portion 51 that fixes the laminated artificial feathers 3 to each other is arranged to extend along the shaft 7, the adhesive fixing portion 51 over a wide range of the wing body portion 5 extending along the shaft 7. Will be formed. For this reason, the effect which suppresses that the stacking order and arrangement | positioning of the artificial feather 3 change can be acquired more reliably.

In the badminton shuttlecock 1, the adhesive fixing portion 51 is formed at a position closer to the base body 2 than the central portion in the extending direction of the shaft 7 in the wing body portion 5. In this case, when the shuttlecock 1 is hit by a racket, the impact at the time of hitting is formed by forming the adhesive fixing portion 51 at the position as described above instead of the rear end portion of the wing body portion 5 where the deformation amount is relatively large. Therefore, the possibility that the adhesive fixing part 51 is damaged can be reduced. In addition, since the deformation of the rear end portion of the wing body portion 5 at the time of impact can be prevented from being restricted more than necessary due to the formation of the adhesive fixing portion 51, the flight performance of the shuttlecock 1 is close to that of a natural shuttlecock. Can be.

In the badminton shuttlecock 1, the stacking state fixing portion is obtained by melting at least a part of the overlapping portions of the wing portion (wing body portion 5) of the artificial feather 3 as shown in FIGS. 42 to 44. By solidifying, a fusion fixing part 41 as a fusion part in which the overlapping part of the wing part of the artificial feather 3 is fixed may be included. In this case, a fusion fixing part for maintaining the laminated state of the artificial feather 3 without performing prior arrangement of an adhesive or the like by melting and re-solidifying at least a part of the laminated part of the artificial feather 3 41 can be formed. For this reason, the manufacturing process of the shuttlecock 1 can be simplified.

42. In the badminton shuttlecock 1, the fusion fixing portion 41 may be formed to extend along the axis 7 of the artificial feather 3 as shown in FIG. In this case, since the fusion fixing portion 41 that fixes the laminated artificial feathers 3 to each other is arranged so as to extend along the shaft 7, the fusion fixing of a wide range of the wing body portion 5 extending along the shaft 7 is performed. The part 41 is formed. For this reason, the effect which suppresses that the stacking order and arrangement | positioning of the artificial feather 3 change can be acquired more reliably.

42. In the badminton shuttlecock, the fusion fixing portion 41 is formed at a position closer to the base body 2 than the central portion in the extending direction of the shaft 7 in the wing body portion 5 as shown in FIG. In this case, when the shuttlecock 1 is struck by the racket, the fusion fixing portion 41 is formed at the position as described above instead of the rear end portion of the wing main body portion 5 where the deformation amount is relatively large. The possibility that the fusion fixing part 41 is damaged by an impact can be reduced. Further, since the deformation of the rear end portion of the wing body portion 5 at the time of impact can be prevented from being restricted more than necessary due to the formation of the fusion fixing portion 41, the flight performance of the shuttlecock 1 is close to that of a natural shuttlecock. Can be a thing.

A badminton shuttlecock 1 according to the present invention includes a base body 2 as a hemispherical base body, a plurality of artificial feathers 3, a middle thread 15 as a string member, and an inner thread 17 as another string member. Prepare. The plurality of artificial feathers 3 include a wing part and a shaft 7 connected to the wing part. The plurality of artificial feathers 3 are fixed to the base body 2 so as to be annularly arranged and partially stacked. As shown in FIG. 41, the middle thread 15 circulates around the shaft 7 (preferably the fixing shaft portion 10) of each of the plurality of artificial feathers 3 and faces the artificial feathers 3 facing each other at the portions where the artificial feathers 3 are stacked. 3 are arranged so as to pass between the three. As shown in FIG. 56, the inner thread 17 circulates around the shaft 7 of each of the plurality of artificial feathers 3 and is disposed on the inner peripheral side of the plurality of artificial feathers 3 arranged in an annular shape.

In this case, in addition to the effect resulting from the shape of the base body 2 described above, the artificial feather 3 having the shaft 7 having lower rigidity and strength than the waterfowl feather (natural feather) constituting the natural shuttlecock is used. Even so, the laminated state and shape of the artificial feather 3 can be maintained as they are by arranging the middle thread 15 and the inner thread 17 that act as the laminated state fixing portion. That is, it is possible to prevent the stacking order of the artificial feathers 3 from being changed by arranging the middle thread 15 between the stacked portions of the artificial feathers 3. Moreover, since the inner thread | yarn 17 will be arrange | positioned along the inner peripheral side of the several artificial feather | wing 3, while using the shuttlecock 1, the wing | blade part of the artificial feather | wing 3 will bend to the inner peripheral side. It can be suppressed by the inner thread 17. For this reason, it can suppress that the flight performance of the shuttlecock 1 deteriorates resulting from the laminated state of the artificial feather 3 being switched or the artificial feather 3 being deformed.

Further, the intermediate thread 15 and the inner thread 17 fix the shafts 7 of the adjacent artificial feathers 3 in order to maintain the laminated state of the plurality of artificial feathers 3, and thus also function as strength members. For this reason, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved. Further, since very thin threads can be used as the middle thread 15 and the inner thread 17, changes in the center of gravity position, balance, total mass, etc. of the shuttlecock 1 due to the arrangement of the middle thread 15 and the inner thread 17 are minimized. Can be small.

In the badminton shuttlecock 1, the fusion fixing portion 41 is made of a material different from the laminated portion of the artificial feather 3 as shown in FIG. 44, and is disposed between the laminated portions of the artificial feather 3. The member 43 may be included. In this case, even if the thickness of the laminated portion of the artificial feather 3 is thin, the strength of the fusion fixing portion 41 can be sufficiently increased by arranging the reinforcing member 43.

The embodiments and examples disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The present invention is advantageously applied to a badminton shuttlecock using artificial feathers having flying characteristics and durability equivalent to a badminton shuttlecock using waterfowl feathers.

1 shuttle cock, 2 base body, 3 artificial feathers, 5 feather body parts, 6 parts to be feather body parts, 7 shafts, 8 blade shaft parts, 9,90 sheet-like members, 10 fixed shaft parts, 12 protruding parts, 15 middle thread, 17 inner thread, 19 outer thread, 22 central axis, 23, 24 line segment, 31, 33 flap part, 32 edge part, 41 fusion fixing part, 43 reinforcing member, 50 extension part, 51 adhesive fixing Part, 53 adhesive member, 61 convex part, 62, 72 side wall, 63 insertion hole, 64 adhesive, 65, 75 concave part, 71 elastic body member, 81 fixing thread, 91 nonwoven fabric, 92 resin layer.

Claims

A shuttlecock base body (2) having a fixing surface portion for fixing the shaft (7) of the shuttlecock blade (3),
In the fixing surface portion,
A plurality of insertion holes (63) for inserting and fixing the shaft (7);
A shuttlecock base body (2) formed with convex portions (61, 71) adjacent to the insertion hole (63) and projecting from the surface of the fixing surface portion.
The plurality of insertion holes (63) are arranged circumferentially in the fixing surface portion,
The shuttlecock according to claim 1, wherein the convex portion (61, 71) is formed adjacent to an inner peripheral side of the plurality of insertion holes (63) arranged in the circumferential shape. Base body (2).
The base body (2) for a shuttlecock according to claim 1, wherein the convex part (61) is integrated with the fixing surface part.
The shuttlecock base body (2) according to claim 1, wherein the convex portion (71) is formed by joining a member to be the convex portion (71) to the fixing surface portion. ).
The base body (2) for the shuttlecock according to claim 4, wherein the convex part (71) is constituted by an elastic body.
The surface of the convex portion (61, 71) facing the insertion hole (63) is formed to extend in a direction along the extending direction of the insertion hole (63). A base body (2) for the shuttlecock according to item.
The surface of the convex portion (61, 71) facing the insertion hole (63) is formed to extend in a direction perpendicular to the surface of the fixing surface portion. The base body (2) for shuttlecocks described in 1.
The shuttlecock base body (2) according to claim 1,
A shuttlecock for badminton (3), comprising shuttlecock blades (3) having shafts (7) inserted and fixed in a plurality of insertion holes (63) formed in the fixing surface portion of the base body (2). 1).
The shuttlecock blade (3)
Habe,
An artificial feather comprising the shaft (7) connected to the wing,
The shaft (7) includes a fixed shaft portion (10) and a wing shaft portion (8) connected to the fixed shaft portion (10),
The members (9, 90) constituting the wing portion are in contact with the fixed shaft portion (10) and wider than the fixed shaft portion (10), and the wing main body portion (5). And a protruding portion (12) protruding from the wing shaft portion (8),
The shuttle for badminton according to claim 8, wherein an end of said protrusion (12) opposite to said wing body (5) is embedded in a member constituting said wing shaft (8). Cock (1).
The shuttlecock (1) for badminton according to claim 9, wherein the member (90) constituting the wing portion comprises a sheet-like member (90) having a multilayer structure.
The shuttlecock for badminton according to claim 9, further comprising a string-like body (15, 17, 19) that regulates relative movement or deformation of the wing portion of the plurality of artificial feathers.