Hereinafter, embodiments and examples 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 Mode 1)
1 is a side view schematically showing a first embodiment of a shuttlecock according to the present invention. Fig. 2 is a partial cross-sectional schematic diagram showing the fused attachment portion of the shuttlecock shown in Fig. 1; Embodiment 1 of the shuttlecock according to the present invention will be described with reference to Figs. 1 and 2. Fig.
1 and 2, a shuttlecock 1 according to the present invention includes a hemispherical base body 2 and artificial feathers 3 for a plurality of shuttlecocks connected to a flat surface of the base body 2 And fused and secured portions 41 for holding a plurality of artificial feathers in a laminated state are formed. The base body 2 is formed of, for example, a cork. A plurality of (for example, 16) artificial feathers 3 are connected to a flat surface of the base body 2 in a toric shape. As can be seen from Figs. 1 and 2, the plurality of artificial feathers 3 are separated from the base body 2 by a plurality of artificial feathers 3 So that the inner diameter of the tubular portion formed becomes larger as it moves away from the base body 2). The plurality of artificial feathers 3 are fixed to each other by a sewing thread such as a thread of a cotton thread. The fused and secured portion 41 is formed by partially melting and re-solidifying the plumed main body portion 5 having a elliptical planar shape by using a welder or the like. That is, in the fused attachment portion 41, the materials constituting the feather body portion 5 are in a state in which they are fixed to each other due to partial melting and solidification. Further, the plane shape of the fused / secured portion 41 may be any shape as described later.
In this way, it is possible to suppress deterioration of the emergency performance of the shuttlecock 1 due to the fact that the artificial feathers 3 are stacked or the artificial feathers 3 are deformed. In the shuttlecock 1 shown in Figs. 8 and 2, it is not necessary to carry out the step of disposing an adhesive or the like on the surface of the feather main body 5 in advance in the manufacturing process thereof, so that the manufacturing process can be simplified .
3 is a partial cross-sectional schematic diagram showing a modified example of the first embodiment of the shuttlecock according to the present invention shown in Figs. 1 and 2. Fig. A modification of the first embodiment of the shuttlecock according to the present invention will be described with reference to Fig.
The shuttlecock 1 shown in Fig. 3 basically has the same structure as that of the shuttlecock 1 shown in Figs. 1 and 2, but the structure and manufacturing method of the fused / secured portion 41 are different. That is, in the shuttlecock 1 shown in Fig. 3, the reinforcing members 43 are arranged between the feather main body portions 5 stacked in the fused attachment portion 41. [ The reinforcing member 43 is formed by arranging a resin piece such as polypropylene on the lamination portion of the feather body portion 5 and heating and re-solidifying the same together with the feather body portion 5 So as to reinforce the fused-attachment fixing portion 41. For example, a resin sheet made of polypropylene may be used as the reinforcing member 43 having a rectangular shape of 4 mm in length and width and a thickness of 200 탆. By disposing such a reinforcing member 43, the strength of the fused attachment portion 41 can be improved. As a result, the durability of the shuttlecock 1 can be improved.
As the reinforcing member 43 described above, any resin can be used. For example, a film made of polypropylene (PP) or the like can be used. Such a film is sandwiched between pre-laminated feather body portions 5 and the corresponding portions are heated using a welder or the like to melt the polypropylene film as the feather body portion 5 and the reinforcing member 43 .
As the reinforcement member 43, it is preferable to use a material different from the material constituting the feather body 5 and having a melting point lower than that of the material constituting the feather body 5. In this way, the fused / secured portion 41 can be formed in a state in which the amount of heat applied to the fused / secured portion 41 is relatively small. In this case, the material itself constituting the feather body portion 5 is not completely melted, and the fusion-bonded portion 41 is formed by melting and resolidification of the reinforcing member 43. [
As the method for forming the fused / secured portion 41, for example, the following method can be used. That is, a film of a predetermined size (for example, a quadrangle-shaped film having a size of about 4 mm x 4 mm) is prepared as the reinforcing member 43, and the film is placed on a predetermined position of the feather main body 5 Temporarily fixed. This provisional fixation can be carried out with an extremely small amount of adhesive, an adhesive, or the like, for example. Then, by using a hand type ultrasonic welder or the like, the laminated portion having the three-layer structure with the feather body portion 5, the reinforcing member 43 and the other feathery body portion 5 is pressed and heated. In this way, the fused attachment portion 41 can be formed.
The mass of the reinforcing member 43 is extremely light, for example, approximately 0.04 g when the above-mentioned polypropylene film is used. Therefore, the reinforcing member 43 hardly affects the mass balance of the shuttlecock.
Fig. 4 is a side schematic view showing another modification of the first embodiment of the shuttlecock according to the present invention shown in Figs. 1 and 2. Fig. Fig. 5 is a schematic top view of the shuttlecock shown in Fig. 4; Another modification of the first embodiment of the shuttlecock according to the present invention will be described with reference to Figs. 4 and 5. Fig.
The shuttlecock 1 shown in Figs. 4 and 5 basically has the same structure as that of the shuttlecock 1 shown in Figs. 1 and 2 but has a structure similar to that of the artificial feather 3 There is disposed an inner yarn 17 for preventing the feather portion from curling inward (curl).
The body chamber 17 circulates around the axis of the artificial feathers 3. The body chamber 17 is arranged so as to extend from the inner circumferential side of the plurality of artificial feathers 3 arranged in the toric shape to the axis of the adjacent artificial feathers 3 and turn around the corresponding axis sequentially. 4 and 5, the core chamber 17 is arranged along the inner circumferential side of the artificial feathers 3 arranged in a toric shape. Therefore, when the shuttlecock 1 is used, it is possible to prevent the feather body portion of the artificial feathers 3 from bending toward the inner circumferential side (the side where the body chamber 17 is located). As a result, it is possible to more reliably suppress the occurrence of the problem that the characteristics such as the air resistance of the shuttlecock 1 are greatly changed.
Figs. 6 to 10 are schematic views for explaining a modification of the fused attachment portion in the first embodiment of the shuttlecock according to the present invention shown in Figs. 1 and 2. Fig. A modification of the fused attachment portion 41 of the shuttlecock 1 according to the present invention will be described below.
The fused attachment portion 41 of the shuttlecock shown in Fig. 6 has a quadrangular shape in plan view. The fused attachment portion 41 has rounded corners. The fused attachment portion 41 of the artificial feathers 3 extends from the central portion in the direction along the shaft 7 of the feather main body portion 5 having the length L0 in the direction along the shaft 7, (Not shown) side. The length L1 in the direction along the axis 7 of the region where the fused attachment portions 41 are disposed is set to 40% or more and 65% or less, more preferably 40% or more and 50% or less of the length L0 . At least a part of the fused attachment and detachment section 41 is located at the end of the shaft 7 and the feather body section 5 in the width direction perpendicular to the shaft 7 of the artificial feather 3, (The portion of the outer peripheral portion opposed to the shaft 7 in the feather main body portion 5 shown in Fig. 6 from the furthest shaft 7). That is, the center axis 22 of the shaft 7 shown in Fig. 6 and the end portion of the feather main body 5 that is the farthest from the shaft 7 in the width direction and is parallel to the center axis 22 Consider a line segment 23. When the line segment 24 passing through the 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 fused- In the region surrounded by the line segment 24 and the shaft 7 in the region 5.
The fused attachment portion 41 of the shuttlecock shown in Fig. 7 has a long rectangular shape (or a linear shape). The fused attachment portion 41 extends in the direction along the shaft 7. With this configuration, the overlapping state of the feather main body 5 can be maintained over a wide range in the direction along the shaft 7.
The fused attachment portion 41 of the shuttlecock shown in Fig. 8 has a triangular planar shape. One side of the outer periphery of the fused attachment section 41 is extended in the direction along the shaft 7 and is opposed to the side of the fused attachment section 41 extending in the direction along the corresponding shaft 7 Is disposed at a position closer to the base body 2 (not shown) than the central portion of the side. With such a shape, it is possible to obtain an effect that the load applied to the fused attachment portion 41 is dispersed.
The fused attachment portion 41 of the shuttlecock shown in Fig. 9 is formed of a plurality of dot-shaped fixed portions. The plane shape of each of the fixing portions is circular, but any other shape may be used. Further, the region where the fixing portion is disposed may be a rectangular or elliptical region extending in the direction along the shaft 7. This makes it possible to suppress the overlapping of the feather main body 5 with respect to a large area (a region in which dot-shaped fixing portions are distributed) in a state where the area of the actually fused portion (the total area of the dot- State can be maintained.
The fused attachment portion 41 of the shuttlecock shown in Fig. 10 is constituted by two fixed portions of a quadrangular shape. The plane shape of each of the fixing portions is a tetragonal shape, but may be any other shape (e.g., circle, ellipse, polygon, etc.). Further, the size of the individual fixing portions may not be the same, and a plurality of fixing portions differing in size may be arranged in two, or three or more. By adopting such a shape, for example, even if one of the fixing portions deviates, the other fixing portion functions, and the shape of the shuttlecock can be maintained. Further, the fused attachment portion 41 may be disposed over a wide range of the feather body portion 5 while suppressing an increase in the mass of the shuttlecock.
The shape of the fused attachment and detachment section 41 is an example, and the fused attachment section 41 may have any other desired shape. The conditions of the region in which the fused attachment portions 41 described in Fig. 6 are arranged can also be applied to the fused attachment portion 41 shown in Figs. 7 to 10.
Next, the configuration of artificial feathers 3 constituting the shuttlecock 1 shown in Figs. 1 and 2 will be described. Fig. 11 is a plan view schematically showing the construction of artificial feathers for a shuttlecock constituting the shuttlecock shown in Figs. 1 and 2. Fig. 12 is a schematic cross-sectional view of the line segment (VII-VII) in Fig. Fig. 13 is a schematic cross-sectional view taken along the line segment VIII-VIII of Fig. 11. Fig. Fig. 14 is a schematic cross-sectional view of the line segment XIV-XIV in Fig. 11. Fig. 15 is a schematic cross-sectional view taken along a line XV-XV in Fig.
11 and 15, the artificial feathers 3 constituting the shuttlecock 1 shown in Figs. 1 and 2 are composed of a feather main body 5, a shaft 5 connected to the feather main body 5, (7). The shaft 7 is composed of a feather shaft portion 8 arranged so as to protrude from the feather main body portion 5 and a fixing shaft portion 10 connected to the feather main body portion 5 at a substantially central portion of the feather main body portion 5 . The pin shaft portion 8 and the fixing shaft portion 10 are arranged so as to extend in the same line, and constitute one continuous shaft 7. [
The feather body portion 5 is connected with a protruding portion 12 supported in a state embedded in the interior of the feather portion 8. The feather body portion (5) and the projecting portion (12) constitute one sheet-like member (9).
The shaft 7 extends from the root (the right end in Fig. 12, or the end on the opposite side to the side connected to the fixing shaft 10 in the pin shaft portion 8) The end portion or the end portion of the fixing shaft portion 10 opposite to the side connected to the pin shaft portion 8) gradually decreases in diameter. 13 to 15, the cross-sectional shape in the direction (orthogonal direction) intersecting with the extending direction of the shaft 7 is a quadrangular shape, more specifically, a rhombic shape. In addition, the cross-sectional shape of the shaft 7 is not limited to a quadrangular shape as described above, and any shape can be employed. For example, as the cross-sectional shape of the shaft 7, the length in the direction (longitudinal direction in Fig. 13) crossing the extending direction of the sheet-like member 9 is set to be longer than the extending direction of the sheet- Direction), or the like may be employed.
12 and 13, on the base side of the shaft 7, the sheet-like member 9 is embedded in the shaft 7 (in the state of the sheet-like member 9 Is embedded in the shaft 7 so as to have an arc-shaped cross-sectional shape). However, as shown in Figs. 14 and 15, the sheet-like member 9 is exposed on the surface of the shaft 7 as it is directed toward the front end side of the shaft 7 9 are in contact with and fixed to the surface of the shaft 7).
11 to 15, the sheet-like member 9 is arranged on the base side of the shaft 7 in the axial direction of the shaft 7, Shaped member 9 is exposed on the surface of the shaft 7 at the central portion and the tip end side of the shaft 7 and may be formed in a different shape. For example, the sheet-like member 9 is embedded in the shaft 7 at the base and center of the shaft 7, while the sheet-like member 9 is mounted on the shaft 7 7 may be exposed to the surface of the substrate. Alternatively, the sheet-like member 9 may be embedded in the shaft 7 in all portions of the shaft 7, the central portion, and the tip end side.
Next, the method for manufacturing the shuttlecock 1 and artificial feathers 3 for a shuttlecock shown in Figs. 1, 2, 11 to 15 will be briefly described. First, a method for manufacturing artificial feathers 3 for a shuttlecock according to the present invention as shown in Fig. 11 will be described.
In the method for producing artificial feathers 3, first, the nonwoven fabric preparation step (S10) is performed. The nonwoven fabric to be prepared in this step S10 may be any sheet-like member. For example, a nonwoven fabric having a planar shape of generally quadrangular shape in which four corners are rounded may be prepared. The thickness of the nonwoven fabric can be appropriately selected in consideration of air resistance and mass balance of the artificial feathers 3 formed. As the nonwoven fabric, a nonwoven fabric made of chemical fibers such as polyester fibers and acrylic fibers can be used. For example, a nonwoven fabric having a pile yarn weight per unit area of 10 g / m 2 or more and 90 g / m 2 or less can be used. It is also possible to use a polyester fiber as the nonwoven fabric and a pile yarn per unit area of 30 g / m 2 or more and 80 g / m 2 or less and a thickness of 0.07 mm or more and 0.13 mm or less. The nonwoven fabric of the polyester fiber is preferably a nonwoven fabric having a weight per unit area of not less than 40 g / m 2 and not more than 60 g / m 2, a thickness of not less than 0.08 mm and not more than 0.12 mm, more preferably not less than 40 g / 50 g / m 2 or less, and a thickness of 0.09 mm or more and 0.11 mm or less may be used.
In place of the nonwoven fabric, natural fibers such as silk fabrics and cotton, cellulose fibers (so-called paper), and resins coated with these may be used. In place of the nonwoven fabric, a resin film (thickness of 50 占 퐉 or more and 100 占 퐉 or less) such as a polyamide resin film, a polyester resin film, or a PET film may be used. As the nonwoven fabric, any one of the above-described nonwoven fabrics having a coating layer formed thereon may be used. As a method for forming the coating layer, for example, a method of laminating a resin film to a nonwoven fabric (coextrusion molding) may be used. The coating layer such as a resin film may be formed on one surface of the nonwoven fabric or on both surfaces thereof. Further, the coating layer may be formed on only one surface or on a specific portion of both surfaces.
Next, a step (S20) of disposing a nonwoven fabric in the mold is performed. In this step (S20), the nonwoven fabric prepared in the above-described step (S10) is placed in the mold for forming the shaft 7 by using, for example, an injection molding method.
Next, a mold setting step (S30) is performed. Specifically, a mold in which a nonwoven fabric is disposed is arranged in a state in which the resin constituting the shaft 7 can be injected therein, and the temperature condition of the mold and the like are adjusted.
Next, a resin injection step (S40) is performed. Specifically, the resin is injected into the mold from the injection hole of the resin provided in the mold. As a result, the shaft 7 is formed in contact with the sheet-like member 9 made of a nonwoven fabric in the mold.
Next, a post-treatment step (S50) is performed. Specifically, the sheet-like member 9 to which the shaft 7 is connected, fixed and fixed is taken out from the inside of the mold. At this time, the end surface of the shaft 7 is in a state as shown in Figs. 13 to 15. Fig. That is, the shaft 7 is connected to the sheet-like member 9 over substantially its entire length. In the shaft 7, the sheet-like member 9 is embedded in the shaft 7 on the base side of the shaft 7 as described above. On the other hand, the sheet-like member 9 is exposed on the surface of the shaft 7 as it moves toward the tip end side of the shaft 7. Particularly, on the front end side of the shaft 7, the sheet-like member 9 is fixed on the surface of the shaft 7. Such a configuration can be realized by the shape of the groove for forming the shaft 7 inside the metal mold, the arrangement of the nonwoven fabric serving as the sheet member 9, and the like. Next, in the above-described post-treatment step (S50), the unnecessary portion of the nonwoven fabric (the portion other than the portion to be the feather main body 5) is cut off. As a result, artificial feathers 3 shown in Fig. 11 can be obtained.
Next, a manufacturing method of the shuttlecock 1 shown in Fig. 1 will be described. In the manufacturing method of the shuttlecock 1 shown in Fig. 1, the preparation step (S100) is performed first. In this preparing step S100, the shuttlecock 1 constituent members such as the base body 2 and the artificial feathers 3 of the shuttlecock 1 are prepared. As a manufacturing method of the base body 2, any conventionally known method can be used. In addition, as the method for producing the artificial feathers 3, the above-described manufacturing method can be used.
Next, the assembling step (S200) is performed. In the assembling step (S200), a plurality of artificial feathers (3) described above are connected to the flat surface portion of the base body (2). The artificial feathers 3 are arranged in a toric shape as shown in Figs. Then, the collar portions 8 of the plurality of artificial feathers 3 are fixed to each other by a sewing thread made of a cotton or the like.
In the assembling step S200 described above, in order to maintain the laminated state of the artificial feathers 3, the overlapping areas of the artificial feathers 3 in the feather body 5 are fusion-bonded Thereby forming the fixing portion 41. In this manner, the shuttlecock 1 shown in Figs. 1 and 2 can be manufactured.
(Embodiment 2)
16 is a side view schematically showing a second embodiment of a shuttlecock according to the present invention. Fig. 17 is a partial cross-sectional schematic diagram showing an adhesive fixing portion fixed by the adhesive member of the shuttlecock shown in Fig. 16; Fig. A second embodiment of the shuttlecock according to the present invention will be described with reference to Figs. 16 and 17. Fig.
16 and 17, the shuttlecock 1 basically has the same structure as that of the shuttlecock 1 shown in Figs. 1 and 2. However, the shuttlecock 1 has a structure similar to that of the shuttlecock 1 shown in Figs. But differs in that an adhesive fixing portion 31 is formed not as a fused attachment portion 41 but as a mechanism. That is, as shown in Fig. 16, in the portion where the feather main body portion 5 of the artificial feathers 3 arranged in a torus shape is laminated, the feather main body portion 5 is located closer to the base body 2 There is formed an adhesive fixing portion 31 in which an adhesive member 33 is disposed between the plumage main body portions 5 stacked. In this adhesive fixing part 31, the feather main part 5 laminated via an adhesive member 33 is adhered and fixed as shown in Fig. In this way, the same effect as that of the shuttlecock 1 shown in Figs. 1 and 2 can be obtained.
The planar shape of the above-described adhesive fixing part 31 may be any shape (for example, a shape as shown in Figs. 6 to 10) as in the fused attachment part 41 in the first embodiment . The manufacturing method of the shuttlecock 1 shown in Figs. 16 and 17 is basically the same as the manufacturing method of the shuttlecock shown in Figs. 1 and 2. However, in the assembly step S200 described above, An adhesive member 33 is disposed at a predetermined position of the artificial feathers 3 and the artificial feathers 3 are adhesively fixed to each other by the adhesive member 33, 31). In this way, the shuttlecock shown in Figs. 16 and 17 can be obtained.
(Embodiment 3)
18 is a side view schematically showing a third embodiment of a shuttlecock according to the present invention. Fig. 19 is a schematic top view of the shuttlecock shown in Fig. 18; Fig. 20 is a partial cross-sectional schematic diagram showing the configuration of a portion where the intermediate yarn of the shuttlecock shown in Fig. 18 is disposed. Fig. Fig. 21 is a partial cross-sectional schematic diagram showing the configuration of a portion of the shuttlecock shown in Fig. 18 in which the inner chamber is disposed. Fig. A third embodiment of the shuttlecock according to the present invention will be described with reference to Figs. 18 to 21. Fig.
The shuttlecock 1 shown in Figs. 18 to 21 basically has the same structure as that of the shuttlecock 1 shown in Fig. 15, but the shuttlecock 1 shown in Fig. (Overlapping portion) is fixed. That is, in order to maintain the laminated state of the plurality of artificial feathers 3, the intermediate chamber 15 and the innermost chamber 17 are used. The intermediate chamber 15 and the body chamber 17 are arranged so as to define the positional relationship of the plurality of artificial feathers 3 as described later. Hereinafter, the arrangement of the intermediate chamber 15 and the inert chamber 17 will be described in detail with reference to FIGS. 20 and 21. FIG.
20, the intermediate chamber 15 is provided around the axis 7 of the artificial feathers 3, and is surrounded by the adjacent feathers 3, The plumage main body 5 of the adjacent artificial feathers 3 is arranged so as to pass through the areas facing each other (so as to pass between the plumage main bodies 5). Since the middle chamber 15 passes between the plumage main body portions 5 stacked at the plumed main body portion 5 in this way, the stacking order of the feather main body portions 5 (For example, the stacking order of the feather body 5 is changed by the impact of the blow by the racket) can be suppressed.
As shown in Fig. 21, the core chamber 17 also circles around the axis 7 of the artificial feather 3, like the intermediate chamber 15 shown in Fig. The body chamber 17 extends from the inner circumferential side of the plurality of artificial feathers 3 arranged in the toric shape to the axis 7 of the adjacent artificial feathers 3 and the circumference of the corresponding articulated feathers 3 is sequentially As shown in FIG. 19 and 21, the core chamber 17 is arranged along the inner circumferential side of the artificial feathers 3 arranged in a toric shape. Therefore, when the shuttlecock 1 is used, it is possible to suppress the feather body 5 of the artificial feathers 3 from bending to the inner circumferential side (the side on which the body chamber 17 is located). As a result, it is possible to suppress the problem that the characteristics such as the air resistance of the shuttlecock 1 are largely changed.
The intermediate chamber 15 and the body chamber 17 described above are arranged in a columnar shape so as to fix all of the plurality of artificial feathers 3 arranged in an annular shape as shown in Figs. 18 and 19 to each other. The intermediate chamber 15 and the body chamber 17 can be arranged as shown in Figs. 18 to 21 by, for example, sewing a worker through a needle or the like. The one end of the sewing start and the other end of the sewing end are bundled and the remaining yarn is cut and removed in the vicinity of 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 loosened when the shuttlecock 1 is hit by the racket.
Any material such as cotton or resin can be used for the intermediate chamber 15 and the inert chamber 17, but it is preferable to use a thread made of polyester. The intermediate chamber 15 and the inertia chamber 17 are preferably as light as possible in order to minimize the influence of the center of the shuttlecock 1 and the like. For example, 50 yarns made of polyester may be used as the yarns to be used. In this case, the mass of the yarn used as the intermediate chamber 15 becomes about 0.02 g. If the mass is such a mass, the center position of the shuttlecock 1 is slightly influenced, but it is considered that there is almost no influence on the emergency performance.
18 and 19, the intermediate chamber 15 and the inertial chamber 17 may be arranged at different distances from the base body 2. However, the intermediate chamber 15 and the inertial chamber 17 may be arranged at different distances from the base body 2, The middle chamber 15 and the inert chamber 17 may be disposed at substantially the same distance from each other. However, in the case where the middle chamber 15 and the inert chamber 17 are used as the strength members as well as the order of stacking the artificial feathers 3, the intermediate chamber 15 and the inert gas chamber 17 The other is preferable. In order to prevent the feather main body portion 5 of the artificial feathers 3 from curving inwardly (to curl), it is more preferable that the body chamber 17 is positioned at a position away from the base body 2 It is more effective to deploy.
The manufacturing method of the shuttlecock 1 shown in Figs. 18 to 21 is basically the same as the method of manufacturing the shuttlecock shown in Figs. 1 and 2. However, in the above assembling step (S200) The intermediate chamber 15 and the inert gas chamber 17 are disposed. The intermediate chamber 15 and the body chamber 17 may be arranged by, for example, a sewing operation by an operator. As the core chamber 17, the intermediate chamber 15, and the like, any material can be used. For example, as described above, a resin such as a face or a polyester can be used as a material. In this manner, the shuttlecock 1 shown in Figs. 18 and 19 can be manufactured.
22 is a side schematic view showing a modified example of the third embodiment of the shuttlecock according to the present invention shown in Figs. 18 and 19. Fig. Fig. 23 is a partial cross-sectional schematic diagram showing the configuration of a portion where the outer yarn of the shuttlecock shown in Fig. 22 is installed. Fig. A modification of the third embodiment of the shuttlecock 1 according to the present invention will be described with reference to Figs. 22 and 23. Fig.
The shuttlecock 1 shown in Figs. 22 and 23 basically has the same structure as that of the shuttlecock 1 shown in Figs. 18 and 19, but in addition to the intermediate chamber 15 and the inertia chamber 17, Except that the cover 19 is provided to maintain the laminated state and shape of the artificial feathers 3. 23, the outer shell 19 extends around the axis 7 of the artificial feathers 3 as shown in Fig. 23, and is wound around the outer periphery side of the artificial feathers 3 And again around the axis 7 of the artificial feathers 3 adjacent thereto. In this way, it is possible to suppress the problem that the feather main body portion 5 of the artificial feathers 3 is curved toward the outer periphery.
The cover 19 may be made of the same material as the intermediate chamber 15 or a thread having a thickness. The method of installing the cover 19 is also based on a sewing operation by an operator as in the above-described intermediate chamber 15 and the like.
(Fourth Embodiment)
24 is a side schematic view showing Embodiment 4 of the shuttlecock according to the present invention. Embodiment 4 of the shuttlecock according to the present invention will be described with reference to Fig.
The shuttlecock 1 shown in Fig. 24 basically has the same structure as that of the shuttlecock 1 shown in Figs. 1 and 2, but differs in the structure of members for maintaining the laminated state of the artificial feathers 3 . That is, in the shuttlecock 1 shown in Figs. 1 and 2, the fused attachment portion 41 is formed to maintain the lamination state and shape of the feather main body portion 5 of the artificial feather 3, A plurality of artificial feathers 3 are stitched in a cylindrical shape by the fixing chamber 21 at the position of the feather main body portion 5 on the side of the base body 2 in the shuttlecock 1 shown in Fig. . By stacking the plurality of artificial feathers 3 together by the fixing chamber 21, the state of the artificial feathers 3 can be easily maintained. As a result, the same effect as the shuttlecock 1 shown in Figs. 1 and 2 can be obtained.
25 is a side schematic view showing a modification of the fourth embodiment of the shuttlecock shown in Fig. Fig. 26 is a partial cross-sectional schematic diagram showing the configuration of the portion where the fixing chamber of the shuttlecock shown in Fig. 25 is disposed. Fig. A modification of the fourth embodiment of the shuttlecock according to the present invention will be described with reference to Figs. 25 and 26. Fig.
25 and 26, a modification of the fourth embodiment of the shuttlecock of the present invention basically has the same structure as that of the shuttlecock 1 shown in Fig. 24, but the arrangement of the securing chamber 21 Is different. That is, in the shuttlecock 1 shown in Figs. 25 and 26, in the portion of the feather body portion 5 in which the artificial feathers 3 adjacent to each other are laminated, The two feather main body portions 5 in which the fixing yarn 21 is laminated are sealed. The region where the fixing yarn 21 is stitched is extended substantially along the extending direction of the shaft 7. Even in this way, it is possible to maintain the laminated state of the feather main body portion 5 of the artificial feather 3 in the shuttlecock 1.
(Embodiment 5)
Fig. 27 is a top view schematically showing the fifth embodiment of the shuttlecock according to the present invention. Fig. 28 is a plan schematic view showing a configuration of artificial feathers for a shuttlecock constituting the shuttlecock shown in Fig. A fifth embodiment of the shuttlecock according to the present invention will be described with reference to Figs. 27 and 28. Fig.
27 and 28, the shuttlecock 1 basically has the same structure as that of the shuttlecock shown in Figs. 1 and 2, but the shape of the artificial feathers 3 and the shape of the artificial feathers 3 The arrangement of the fused attachment portions 41 is different from that of the shuttlecock shown in Figs. 28, the artificial feathers 3 constituting the shuttlecock 1 according to the present embodiment have basically the same constitution as the artificial feathers 3 shown in Fig. 11 , The shape of the feather main body 5 is different. 28, in the artificial feathers 3 constituting the shuttlecock 1 shown in Fig. 27, a stretchable portion 50 protruding toward the outer periphery of the feather body portion 5 is formed have. The extending portion 50 extends in a direction away from the shaft 7 (specifically, a direction intersecting the shaft 7, more specifically, a direction orthogonal to the shaft 7). In the shuttlecock 1 shown in Fig. 27, the extending portion 50 of the artificial feathers 3 is formed on the inner peripheral side of the other artificial feathers 3 adjacent to the axis 7 of the other artificial feather 3, To a location exceeding the limit. The fuselage body portion 5 of the artificial feather 3 and the stretchable portion 50 are connected and fixed by the fused attachment portion 41 at a position beyond the axis 7. [ 3, the reinforcing member 43 may be disposed between the extending portion 50 and the feather main body portion 5 of the other artificial feather 3, as shown in Fig. The planar shape of the fused attachment portion 41 may be an arbitrary shape as shown in Figs. 8 to 10, for example.
At least a part of the fused attachment portions 41 is arranged in the width direction which is a direction perpendicular to the shaft 7 (see Fig. 28) of the artificial feathers 3, It is more preferable that the distance between the end of the portion 5 (see Fig. 28) (the portion of the outer peripheral portion facing the shaft 7 in the feather main body portion further away from the shaft 7) Region. That is to say, the center axis 22 of the shaft 7 shown in Fig. 27 and the line segment passing through the end portion farthest from the shaft 7 in the width direction in the feather body portion and parallel to the center axis 22 23). When the line segment 24 passing through the 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 fused- It is preferable that it is located in the region surrounded by the line segment 24 and the shaft 7 in the main body portion 5. In the above-described feather main body portion, the outer peripheral portion opposed to the shaft 7 means the outer peripheral portion of the area of the feather main body portion 5 not including the extending portion 50.
Even in such a configuration, the laminated state of the feather main body portion 5 of the artificial feather 3 can be maintained in the same manner as the shuttlecock 1 shown in Fig. 1, since the fused / secured portion 41 is disposed at a position beyond the axis 7 of the other adjacent artificial feathers 3, The degree of freedom of the shape of the artificial feathers 3 and the degree of freedom in disposition of the fused attachment portions 41 are greater than in the case where the fingers 3 are disposed on the front side of the shaft 7 of the artificial feathers 3. 27, the twist angle of the artificial feathers 3 can be set to a predetermined value even if the artificial feathers 3 are located at the tip end side (the end side in the direction away from the base body 2) from the center of the feather main body 5 . Since the fused attachment portion 41 is formed in the extending portion 50 protruding from the outer periphery of the feather main body portion 5, The angle (twist angle) between the feather body portions 5 can be made sufficiently large. That is, a shape close to the shape of the natural shuttlecock can be realized.
The shape of the extending portion 50 is not limited to the shape shown in Fig. 28, and any other shape can be used. 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 the other portion in the extending portion 50 As shown in FIG. In the feather body portion 5, the portion on one side as seen from the shaft 7 is larger than the portion on the other side as a whole (the width of the portion on one side in the direction crossing the shaft 7 is And the width of the other artificial feathers 3 is larger than the width of the other side of the artificial feathers 3, good. Further, the fused / secured portion 41 may be disposed at a position not exceeding the shaft 7 like the shuttlecock 1 shown in Fig.
29 is a top view schematically showing a modified example of the fifth embodiment of the shuttlecock according to the present invention shown in Fig. A modification of the fifth embodiment of the shuttlecock 1 according to the present invention will be described with reference to Fig.
The shuttlecock 1 shown in Fig. 29 basically has the same configuration as that of the shuttlecock 1 shown in Fig. 27 except that the inertia chamber 17 is provided. The body chamber 17 can be arranged in the same manner as the body chamber 17 provided in the shuttlecock 1 shown in Figs. In this manner, in addition to the effect of the shuttlecock 1 shown in Fig. 27, the feather body portion of the artificial feather 3 can be prevented from bending to the inner circumferential side (the side on which the body chamber 17 is located). As a result, it is possible to more reliably suppress the occurrence of the problem that the characteristics such as the air resistance of the shuttlecock 1 are greatly changed. 29 shows an example in which the hollow chamber 17 is applied to the shuttlecock 1 shown in Fig. 27, the intermediate chamber 15 shown in Fig. 18 and the like, And a cover 19 shown in Fig. The intermediate chamber 15, the body chamber 17, and the body chamber 19 may be applied to the shuttlecock 1 shown in Fig. 27 in any combination.
In the shuttlecock 1 shown in Figs. 27 and 29, the fused attachment portion 41 is formed as the fixing portion between the extending portion 50 and the feather body portion 5 of the other artificial feather 3, The adhesive fixing portion 31 using the adhesive member 33 as shown in Fig. 17 may be formed as the fixing portion.
Some of which partially overlap with those of the above-described embodiment, but the characteristic constructions of the present invention will be listed below.
A shuttlecock (1) for a badminton according to the present invention comprises a hemispherical base body (2) and a plurality of artificial feathers (3). The plurality of artificial feathers (3) includes a feather portion and an axis (7) connected to the feather portion. Further, the plurality of artificial feathers 3 are fixed to the base body 2 so as to be arranged in an annular shape and partially overlapping each other. A fused attachment portion 41 is formed as a fused portion for fusing at least a part of the overlapping portions of the feather portions of the artificial feathers 3 and then solidifying the fused portions to melt the overlapping portions of the feathers.
In this way, even when artificial feathers 3 having lower rigidity and strength than the feathers (natural feathers) of the water birds constituting the natural shuttlecock are used, the fused attachment and detachment sections 41, The lamination state and shape of the artificial feathers 3 can be maintained unchanged. Therefore, it is possible to suppress the deterioration of the emergency performance of the shuttlecock 1 due to the state of the artificial feathers 3 being stacked or the artificial feathers 3 being deformed.
The fused / secured portion 41 also functions as a strength member because the fingers 3 adjacent to each other are fixed to each other in order to keep the plurality of artificial feathers 3 in a laminated state. Therefore, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.
Further, by fusing and re-coagulating at least a part of the portion where the artificial feathers 3 are laminated, the fused attachment portion 41 can be formed without preliminary placement of an adhesive or the like. Therefore, the manufacturing process of the shuttlecock 1 can be simplified.
6 or 27, at least a part of the fused attachment portion 41 of the shuttlecock 1 for badminton is inserted into the shaft 7 in the width direction which is a direction perpendicular to the shaft 7 of the feather portion, And the end portion of the feather portion, as shown in Fig. More specifically, as shown in Fig. 6 and the like, when the spreading portion 50 as shown in Fig. 26 is not formed on the feather body portion 5, at least a part of the fused attachment portion 41 is formed in the feather main body portion 5 in the region surrounded by the line segment 24 and the shaft 7 shown in Fig. 27, at least a part of the fused attachment portion 41 formed in the extending portion 50 is formed in the feather main body portion 5 5, it is preferable to be located in an area surrounded by the line segment 24 and the shaft 7 shown in Fig. It is more preferable that the fused / secured portion 41 is formed in a region surrounded by the shaft 7 and the line segment 24. In this case, the portion of the feather portion on the outer side of the fused attachment portion 41 in the artificial feathers 3 has a sufficient width, and the twist angle of the artificial feathers 3 can be maintained.
In the shuttlecock for badminton 1, the fused and secured portions 41 are located between the feather main body portions 5 at the mutually overlapping portions of the adjacent feather main body portions 5, 5 and a reinforcing member 43 fixedly attached thereto. In this case, even if the thickness of the portion where the artificial feathers 3 are laminated is thin, the strength of the fused attachment portion 41 can be sufficiently increased by arranging the reinforcing member 43.
In the shuttlecock 1 for badminton, the reinforcing member 43 may be fixed to the feather main body 5 by melting and solidifying.
In the shuttlecock 1 for a badminton, the plane shape of the fused attachment portion 41 may be one selected from the group consisting of a polygonal shape, a circular shape, a long circle shape, and an elliptical shape. Further, in the shuttlecock 1 for badminton, the plane shape of the fused attachment portion 41 may be a quadrangular shape, a trapezoidal shape, a triangular shape, a polygonal shape of a pentagon or more, or any other shape. Further, in the fused attachment portion 41 having a polygonal planar shape, the corner portion may be curved. In addition, the rectangle shape means a shape in which semicircles are connected to two opposing sides of a rectangular quadrangle (like a truck in an athletics field), and a shape in which the quadrangle is bent is also included.
In the shuttlecock 1 for a badminton, the fused attachment portion 41 may be formed of a plurality of fused portions. In the shuttlecock 1 for a badminton, the fused attachment portion 41 may be formed of a plurality of dot-shaped fused portions.
The shuttlecock 1 for badminton is a shuttlecock for a badminton which has a plurality of artificial feathers 3 for controlling the relative movement or deformation of the feather body 5 19) may also be included. In this case, by regulating the relative movement or deformation of the artificial feathers 3 by the string-like bodies (the intermediate chamber 15, the body chamber 17, and the body chamber 19), the plurality of artificial feathers 3 are stacked Can be reliably maintained. Further, since a very thin thread (for example, a thread of a face or a resin such as polyester) or the like can be used as the string-like body, a string-like body having a small mass or occupying volume can be used. Therefore, it is possible to minimize the change in the position of the center of gravity of the shuttlecock 1, balance or the like by arranging the string-like body.
In the shuttlecock 1 for a badminton, the string-like body is arranged around the axis 7 (preferably the fastening shaft portion 10) of the plurality of artificial feathers 3 and arranged in a ring shape (17) as another seal member disposed on the inner circumferential side of the feather main body (5) of a plurality of artificial feathers (3). In this case, since the body chamber 17 is arranged along the inner circumferential side of the plurality of artificial feathers 3, the feather body 5 of the artificial feathers 3 is formed on the inner circumferential side while the shuttlecock 1 is used It is possible to suppress the bending by the body chamber 17. Therefore, it is possible to prevent the emergency performance of the shuttlecock 1 from changing due to the bending of the feather portion. As a result, the emergency performance of the shuttlecock 1 using the artificial feathers 3 can be stabilized and the durability can be improved.
27 to 29, the feather portion (specifically, the feather main body portion 5 constituting the feather portion) of the artificial feather 3 in the shuttlecock 1 for badminton is formed from the outer peripheral portion of the feather portion And extends to a position overlapping the feather portion (specifically, the feather body portion 5 of the other artificial feathers 3) of the other artificial feathers 3 arranged in an annular shape, ). The fused attachment portion 41 may be formed in the extending portion 50. [ In this case, the lamination state and shape of the artificial feathers 3 can be maintained unchanged, and the degree of freedom of deformation of the artificial feathers 3 can be increased. Therefore, the feather in the natural shuttlecock can realize a twist angle close to the twist angle while ensuring the durability, so that the emergency characteristic can be approached to the natural shuttlecock.
In the shuttlecock 1 for badminton, as shown in Fig. 27 or 29, the extending portion 50 may extend from the outer periphery of the feather portion to the position beyond the axis 7 of another artificial feather. The fused attachment portion 41 may be formed at a position beyond the axis 7 of the artificial feathers 3 in the extending portion 50.
In the shuttlecock 1 for a badminton, the feather portion of the artificial feather 3 may include a stretching portion 50 extending to a position over the axis 7 of another artificial feather arranged in an annular shape . The fused attachment portion 41 may be formed at a position beyond the axis 7 of the artificial feathers 3 in the extending portion 50. In this case, the twist angle of the adjacent artificial feathers (3) can be made sufficiently large as much as the twist angle in the natural shuttlecock.
A shuttlecock (1) for a badminton according to the present invention comprises a hemispherical base body (2) and a plurality of artificial feathers (3). The plurality of artificial feathers (3) includes a feather portion and a shaft (7) connected to the feather portion. The plurality of artificial feathers (3) are fixed to the base body (2) so that the adjacent feathers overlap each other while being arranged in an annular shape. An adhesive fixing portion 31 is formed as an adhesive portion in which at least a part of the overlapping portions of the feathers of the artificial feathers 3 are connected by an adhesive layer (adhesive member 33).
In this way, even when artificial feathers 3 having lower stiffness and strength than the feathers (natural feathers) of the waterbirds constituting the natural shuttlecock are used, by forming the adhesive fixing portions 31, The lamination state and shape of the artificial feathers 3 can be maintained unchanged. Therefore, it is possible to suppress the deterioration of the emergency performance of the shuttlecock 1 due to the state of the artificial feathers 3 being stacked or the artificial feathers 3 being deformed.
Further, since the adhered fixing portions 31 fix the adjacent artificial feathers 3 to each other in order to maintain the laminated state of the plurality of artificial feathers 3, they also function as strength members. Therefore, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.
An adhesive fixing portion 31 for maintaining the laminated state of the artificial feathers 3 simply by disposing the adhesive member 33 at a predetermined position and disposing a part of the plurality of artificial feathers 3 so as to overlap with each other, Can be formed. Therefore, the manufacturing process of the shuttlecock 1 can be simplified.
In the shuttlecock for badminton, at least a part of the adhesion fixing part (31) is located at an intermediate point between the shaft (7) and the end of the feather part in the width direction perpendicular to the shaft (7) Or may be formed in a region nearer to the shaft 7. In this case, in the artificial feathers (3), the portion of the feathers outside the adhesive fixing portion (31) has a sufficient width, and the twist angle of the artificial feathers (3) can be maintained.
27 to 29, the feather portion (specifically, the feather main body portion 5 constituting the feather portion) of the artificial feather 3 in the shuttlecock 1 for badminton is formed from the outer peripheral portion of the feather portion And extends to a position overlapping the feather portion (specifically, the feather body portion 5 of the other artificial feathers 3) of the other artificial feathers 3 arranged in an annular shape, ). The adhesive fixing portion 31 may be formed in the extending portion 50. [ In this case, since the twist angle close to the twist angle of the feather in the natural shuttlecock can be realized while ensuring the durability, the emergency characteristic can be approached to the natural shuttlecock.
In the shuttlecock 1 for badminton, as shown in Fig. 27 or 29, the extending portion 50 may extend from the outer periphery of the feather portion to the position beyond the axis 7 of another artificial feather. The adhesive fixing portion 31 may be formed at a position beyond the axis 7 of the artificial feathers 3 in the extending portion 50.
In the shuttlecock 1 for a badminton, the feather portion of the artificial feather 3 may include a stretching portion 50 extending to a position over the axis 7 of another artificial feather arranged in an annular shape . The adhesive fixing portion 31 may be formed at a position beyond the axis 7 of the artificial feathers 3 in the extending portion 50. In this case, the twist angle of the adjacent artificial feathers 3 can be made sufficiently large to the same degree as the twist angle in the natural shuttlecock.
A shuttlecock for a badminton according to the present invention comprises a hemispherical base body 2, a plurality of artificial feathers 3, at least one of a string type body (intermediate thread 15, core thread 17, . The plurality of artificial feathers (3) includes a feather portion and an axis (7) connected to the feather portion. The plurality of artificial feathers (3) are fixed to the base body (2) so that the adjacent feathers overlap each other while being arranged in an annular shape. The string members (intermediate chamber 15, body chamber 17, and body chamber 19) regulate the relative movement or deformation of the feathers in the plurality of artificial feathers 3.
In this way, even when artificial feathers 3 having lower stiffness and strength than the feathers (natural feathers) of the water birds constituting the natural shuttlecock are used, the intermediate seals 15 and the core chambers 17 or the like are arranged on the artificial feathers 3, it is possible to keep the laminated state and shape of the artificial feathers 3 intact. For example, since the intermediate chamber 15 is disposed between the portions where the artificial feathers 3 are laminated, the order of stacking of the artificial feathers 3 can be prevented from being changed. Since the body chambers 17 are disposed along the inner circumferential sides of the plurality of artificial feathers 3, the fact that the feathers of the artificial feathers 3 are bent toward the inner circumferential side during use of the shuttlecock 1 . Therefore, it is possible to suppress the deterioration of the emergency performance of the shuttlecock 1 due to the state of the artificial feathers 3 being stacked or the artificial feathers 3 being deformed.
Since the middle chamber 15 and the body chamber 17 as the string members fix the shafts 7 of the adjacent artificial feathers 3 to each other in order to maintain the laminated state of the plurality of artificial feathers 3, It also acts as a strength member. Therefore, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved. It is also possible to minimize changes in the center position, balance, total mass, and the like of the shuttlecock 1 by disposing the intermediate chamber 15, the inertial chamber 17, etc. because extremely thin threads can be used as the string- have.
In the shuttlecock 1 for a badminton, the string-like body is formed by sewing at least a part of the overlapped portions of the feather portions of the artificial feathers 3 so as to seal the seal portion (the portion fixed with the fixing thread 21) . In this case, the artificial feathers 3 are stuck to each other (stitching with the fixing yarn 21), whereby the order or arrangement of the artificial feathers 3 can be suppressed from varying. That is, the laminated state of the plurality of artificial feathers 3 can be reliably maintained.
At least a part of the sealing portion (the portion fixed by the fixing chamber 21) of the shuttlecock 1 for badminton is provided with a shaft 7 and a feather Or may be formed in a region closer to the shaft 7 than a midpoint between the end portion and the end. In this case, the portion of the feather portion on the outer side of the artificial feathers (3) has a sufficient width, so that the twist angle of the artificial feathers (3) can be maintained.
The shuttlecock 1 for a badminton according to the present invention includes a base body 2 as a hemispherical base body, a plurality of artificial feathers 3, a stacked state fixing portion (middle room 15, (Fixing portion) 19, a fixing chamber 21, an adhesive fixing portion 31, and a fusing fixing portion 41). The plurality of artificial feathers (3) includes a feather portion and an axis (7) connected to the feather portion. Further, the plurality of artificial feathers 3 are fixed to the base body 2 so as to be arranged in an annular shape and partially stacked. The laminated state fixing portions (the middle chamber 15, the core chamber 17, the cover 19, the fixing chamber 21, the adhesion fixing portion 31, and the fused attachment portion 41) So as to maintain the laminated state.
Even if artificial feathers 3 having lower stiffness and strength are used than the feathers (natural feathers) of the water birds constituting the natural shuttlecock in this way, the artificial feathers 3 It is possible to keep the laminated state of the shuttlecock 3 unchanged from the original state. Therefore, it is possible to suppress the deterioration of the emergency performance of the shuttlecock 1 due to the replacement of the stacked state of the artificial feathers 3. [ The laminated state fixing portion also serves as a reinforcing member since the position of the adjacent artificial feathers 3 is relatively fixed in order to maintain the laminated state of the plurality of artificial feathers 3. [ Therefore, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved.
In the shuttlecock 1 for badminton, the laminated state fixing portion is a laminated state fixing portion for fixing the stringed body (the middle chamber 15 and the solid chamber 17 or the outer chamber 19 )). In this case, by regulating the relative movement or deformation of the artificial feathers 3 by the string-like bodies (the intermediate chamber 15, the body chamber 17, and the body chamber 19), the plurality of artificial feathers 3 are stacked Can be reliably maintained. Further, since a very thin thread (for example, a thread of a face or a resin such as polyester) or the like can be used as the string-like body, a string-like body having a small mass or occupying volume can be used. Therefore, it is possible to minimize variations in the center position and balance of the shuttlecock 1 by arranging the string-like bodies.
20, the string-like body of the badminton shuttlecock 1 is formed so that the periphery of each shaft 7 (preferably, the fixing shaft portion 10) of the plurality of artificial feathers 3 , And between the feather main body portions 5 opposed to each other in the overlapping portions of the feather portions of the artificial feathers 3 (the portions overlapping with the other artificial feathers 3 adjacent to each other in the feather body portion 5) And an intermediate chamber 15 serving as a seal member disposed so as to pass therethrough. In this case, since the intermediate chamber 15 is disposed between the portions where the artificial feathers 3 are laminated, it is possible to prevent the order of stacking of the artificial feathers 3 from being changed.
21, the string-like body of the badminton shuttlecock 1 is formed so as to surround the respective shafts 7 (preferably the fixing shaft portions 10) of the plurality of artificial feathers 3, , And a body chamber (17) as another seal member disposed on the inner circumferential side of a plurality of artificial feathers (3) arranged in a ring shape. In this case, since the body chamber 17 is disposed along the inner peripheral side of the plurality of artificial feathers 3 (the inner peripheral side of the feather body portion 5 of the artificial feathers 3), the shuttlecock 1 is used The feather portion (feather body portion 5) of the artificial feathers 3 can be prevented from being bent toward the inner periphery side by the corresponding void chambers 17 during the period of time. Therefore, it is possible to prevent the emergency performance of the shuttlecock 1 from changing due to the bending of the feather portion. As a result, the emergency performance of the shuttlecock 1 using the artificial feathers 3 can be stabilized and the durability can be improved.
As shown in Figs. 24 to 26, in the shuttlecock 1 for a badminton, the laminated state fixing portion is formed by sealing at least a part of overlapping portions of the feather main body portion 5 of the artificial feathers 3 And a sealing portion (a portion fixed by the fixing chamber 21). In this case, the artificial feathers 3 are stuck to each other (stitching with the fixing yarn 21), whereby the order or arrangement of the artificial feathers 3 can be suppressed from varying. That is, the laminated state of the plurality of artificial feathers 3 can be reliably maintained.
In the shuttlecock 1 for a badminton, as shown in Fig. 25, a portion fixed by the fixing chamber 21 may be formed so as to extend along the shaft 7 of the artificial feather 3. In this case, since the fixing chamber 21 for fixing the laminated artificial feathers 3 to each other is arranged so as to extend along the shaft 7, a wide range of the feather main body 5 extending along the shaft 7 The sealing portion is formed. Therefore, it is possible to more reliably obtain the effect of suppressing the change in the order and arrangement of the artificial feathers 3 in stacking.
24, the sealing portion (a portion fixed by the fixing chamber 21) is extended in the direction intersecting the shaft 7 of the artificial feathers 3, as shown in Fig. 24, in the shuttlecock 1 for badminton May be formed. It is preferable that the sealing portion is formed in a columnar shape so as to connect at least two or more, preferably all artificial feathers 3, of a plurality of artificial feathers 3 arranged in a ring shape. The sealing portion may be formed in a double or triple or more circumferential shape so as to connect all of the plurality of artificial feathers 3 arranged in an annular shape. In this case, a sealing portion for connecting two or more (preferably all) artificial feathers 3 in a predetermined stacking order can be easily formed using a sewing machine or the like.
24, the sealing portion of the shuttlecock 1 for badminton is formed so as to protrude from the center of the base body 2 in the extending direction of the shaft 7 in the feather portion (feather body portion 5) As shown in Fig. In this case, when the shuttlecock 1 is hit by the racket, the rear end portion of the feather main body portion 5 having a relatively large amount of deformation (the center portion in the extending direction of the shaft 7 in the feather main body portion 5) (The region far from the sealing portion 2), the possibility that the sealing portion is damaged by an impact at the time of impact can be reduced by forming the sealing portion with the fixing chamber 21 at the above-described position. Further, since the deformation of the rear end portion of the feather main body portion 5 at the time of striking can be prevented from being restricted more than necessary by the formation of the sealing portion, the emergency performance of the shuttlecock 1 can be made close to that of a natural shuttlecock can do.
16 and 17, at least a part of the overlapping portion of the feather main body portion 5 of the artificial feathers 3 is adhered to the adhesive layer (The attachment fixing part 31) connected by the connection part 33 (the attachment part 33). The adhesive fixing portion 31 may be formed on all of the portions where a plurality of artificial feathers 3 arranged in an annular shape are stacked. In this case, by arranging the adhesive member 33 at a predetermined position and arranging a part of the plurality of artificial feathers 3 so as to overlap with each other, the adhesion fixing portion 31 ) Can be formed. Therefore, the manufacturing process of the shuttlecock 1 can be simplified.
In the shuttlecock 1 for a badminton, the adhesion fixing portion 31 may be formed so as to extend along the shaft 7 of the artificial feather 3. In this case, since the adhesive fixing portion 31 for fixing the laminated artificial feathers 3 to each other is arranged so as to extend along the shaft 7, a wide range of the feather main body portion 5 extending along the shaft 7 The adhesive fixing portion 31 is formed. Therefore, it is possible to more reliably obtain the effect of suppressing the change in the order and arrangement of the artificial feathers 3 in stacking.
In the shuttlecock 1 for a badminton, the adhesion fixing portion 31 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 feather body portion 5 . In this case, when the shuttlecock 1 is hit by the racket, the adhesion fixing portion 31 is formed at the above-described position, rather than at the rear end of the feather body portion 5 where the deformation amount is relatively increased, It is possible to reduce the possibility that the adhesive fixing part 31 is broken by the adhesive. It is also possible to prevent the deformation of the rear end portion of the feather body portion 5 at the time of striking from being restricted more than necessary due to the formation of the adhesive fixing portion 31, Of the shuttlecock.
1 to 3, in the shuttlecock 1 for a badminton, at least a part of the overlapping portions of the feather portions (feather body portions 5) of the artificial feathers 3, And a fused and secured portion 41 as a fused portion in which a portion where the plume of the artificial feathers 3 is superposed is fixed by melting and solidifying a part of the fused portion. In this case, a fusion attachment and detachment section 41 for maintaining the laminated state of the artificial feathers 3 without melting or re-solidifying at least a part of the part where the artificial feathers 3 are laminated, Can be formed. Therefore, the manufacturing process of the shuttlecock 1 can be simplified.
In the shuttlecock 1 for badminton, as shown in Fig. 1, the fused attachment portion 41 may be formed so as to extend along the shaft 7 of the artificial feather 3. In this case, since the fused attachment parts 41 for fixing the laminated artificial feathers 3 to each other are arranged to extend along the shaft 7, a wide range of the feather main part 5 extending along the shaft 7 The fused and secured portion 41 is formed. Therefore, it is possible to more reliably obtain the effect of suppressing the change in the order and arrangement of the artificial feathers 3 in stacking.
As shown in Fig. 1, the fused attachment portion 41 of the shuttle for a badminton is located closer to the base body 2 than the center portion in the extending direction of the shaft 7 in the feather main body portion 5 As shown in Fig. In this case, when the shuttlecock 1 is hit by the racket, the fused attachment portion 41 is formed at the above-described position rather than at the rear end of the feather main body portion 5 where the amount of deformation is relatively increased, It is possible to reduce the possibility of breakage of the fused attachment section 41 by the fusing unit. It is also possible to prevent the deformation of the rear end portion of the feather body portion 5 at the time of striking from being restricted more than necessary due to the formation of the fused attachment portion 41, Of the shuttlecock.
The shuttlecock 1 for a badminton according to the present invention includes a base body 2 as a hemispherical base body, a plurality of artificial feathers 3, an intermediate chamber 15 as a seal member, and a body chamber 17 as another seal member. Respectively. The plurality of artificial feathers (3) includes a feather portion and an axis (7) connected to the feather portion. A plurality of artificial feathers (3) are fixed to the base body (2) so as to be arranged annularly and partially stacked. 3, the intermediate chamber 15 is formed around the shaft 7 (preferably the fixing shaft portion 10) of each of the plurality of artificial feathers 3 and the artificial feathers 3 ) Between the artificial feathers 3 facing each other in the laminated portions of the artificial feathers 3. As shown in Figs. 2 and 4, the body chamber 17 has a plurality of artificial feathers 3 arranged in an annular shape and around the respective shafts 7 of the plurality of artificial feathers 3, As shown in Fig.
Even in the case of using artificial feathers 3 having lower rigidity and strength of the shaft 7 than the feathers (natural feathers) of the water birds constituting the natural shuttlecock, the intermediate seals 15 And the body chamber 17 are arranged, the lamination state and shape of the artificial feathers 3 can be maintained as they are. That is, since the intermediate chamber 15 is disposed between the portions where the artificial feathers 3 are laminated, the order of stacking of the artificial feathers 3 can be prevented from being changed. Since the body chambers 17 are disposed along the inner circumferential sides of the plurality of artificial feathers 3, the fact that the feathers of the artificial feathers 3 are bent toward the inner circumferential side during use of the shuttlecock 1, . ≪ / RTI > Therefore, it is possible to suppress the deterioration of the emergency performance of the shuttlecock 1 due to the state of the artificial feathers 3 being stacked or the artificial feathers 3 being deformed.
Since the middle chamber 15 and the body chamber 17 fix the shafts 7 of the adjacent artificial feathers 3 to each other in order to maintain the laminated state of the plurality of artificial feathers 3, . Therefore, the strength of the shuttlecock 1 is improved, and as a result, the durability of the shuttlecock 1 can be improved. The center position and the balance of the shuttlecock 1 by disposing the intermediate chamber 15 and the inertia chamber 17 and the total mass and the like can be used as the intermediate chamber 15 and the inertia chamber 17, Can be minimized.
In the shuttlecock 1 for badminton, as shown in Fig. 3, the fused attachment portion 41 is made of a material different from that of the portion where the artificial feathers 3 are laminated, and the portion of the artificial feathers 3 And a reinforcing member 43 disposed between the two members. In this case, even if the thickness of the portion where the artificial feathers 3 are laminated is thin, the strength of the fused attachment portion 41 can be sufficiently increased by arranging the reinforcing member 43.
11 to 15, in the artificial feather 3, the shaft 7 has a fixing shaft portion 10 and a collar (not shown) extending from the fixing shaft portion 10 to the fixing shaft portion 10. In the shuttlecock 1 for badminton, And may have a shaft portion 8. The sheet-like member 9 constituting the feather portion includes a feather main body portion 5 contacting the fixing shaft portion 10 and wider than the fixing shaft portion 10 and a feather main body portion 5 extending from the feather main portion 5 to the feather portion 8, And the protruding portion 12 may protrude from the protruding portion. The end portion of the projecting portion 12 on the side opposite to the feather body portion 5 side may be embedded in a member constituting the feather portion 8.
In this case, the feather body portion 5 is contacted and fixed to the fixing shaft portion 10 and the projecting portion 12 of the sheet-like member 9 constituting the feather portion is fixed to the member constituting the feather portion 8 The joint strength between the feather portion and the shaft 7 can be increased. Since the projecting portion 12 of the sheet member 9 constituting the feather portion is buried in the feather portion 8, the buried projecting portion 12 acts as a reinforcing member of the feather portion 8 do. Therefore, it is possible to sufficiently enhance the durability of the connecting portion between the feather body portion 5 and the feather portion 8 and the feather portion 8. Also, with respect to the fastening shaft portion 10, since the feather body portion 5 acts as a reinforcing member, the durability of the fastening shaft portion 10 can also be enhanced. Therefore, artificial feathers 3 for a shuttlec having high durability can be realized. As a result, it is possible to realize strength and durability close to feathers for a shuttlecock using new hair of a natural waterbird. Therefore, an artificial shuttlecock 1 having an emergency performance and durability equivalent to that of a shuttlecock using natural shuttlecock feathers can be realized.
(Example 1)
In order to confirm the effect of the present invention described above, the following experiment was conducted. That is, with respect to the shuttlecock according to the present invention in which the intermediate chamber and the inner chamber as shown in the third embodiment are arranged, the state before the intermediate chamber and the inner chamber are set (before the fixing chamber is installed) The emergency trajectory of the shuttlecock, the emergency stability, and the rotation at the time of an emergency were confirmed. Further, it was confirmed whether or not the overlapping portion of the artificial feathers in the shuttlecock after striking (the state in which the overlapping number of the adjacent artificial feathers changed in the initial state (replaced)) occurred. The results are shown in Table 1.
[Table 1]
Here, the sample IDs 1 to 6 correspond to the embodiment of the present invention, and a middle chamber and a core chamber as fixing chambers are provided. The sample ID 7 is a comparative example, and artificial feathers were formed using nonwoven fabrics such as shuttlecocks of sample IDs 1 and 2, but no intermediate yarns and voids were provided. For comparison, the shuttlecock using natural feathers was also checked for an emergency locus, emergency stability, and emergency rotation.
For sample IDs 1 and 2, the same item (item A) was used as a nonwoven fabric constituting artificial feathers. The material of the nonwoven fabric of the item A was polyester, and the weight of pile per unit area was 45 g / m 2. For sample IDs 3 and 4, a nonwoven fabric of item B was used. The material of the nonwoven fabric of item B was polyester, and the weight of pile per unit area was 60 g / m 2. For sample IDs 5 and 6, a nonwoven fabric of item C was used. The material of the nonwoven fabric of the item was polyester, and the weight of pile per unit area was 60 g / m 2. For the sample ID 7 as a comparative example, the item A was used as the nonwoven fabric constituting artificial feathers.
Before the fixing seals were provided for the above-mentioned sample IDs 1 to 6, the impact test was performed, and the rotation number of the shuttlecock at that time was measured. As a measuring method, a shuttlecock during an emergency was photographed by a high-speed camera, and the number of revolutions was calculated from the image. The rotational speed of the shuttlecock (natural sphere) using the sample ID 7 and natural feathers was also measured in the same manner as in the emergency.
Further, for each of the sample IDs 1 to 6, a striking test was carried out after the fixing room was provided, and the number of revolutions was measured by the above-described method. Further, the sensory evaluation was performed with respect to the presence or absence of the sticking of the feather portion after 20 strokes, the emergency trajectory during the striking test, the emergency stability, and the rotation status of the shuttlecock in an emergency. In addition, the same measurement and evaluation were carried out for the sample ID 7 and the cloth sample as a comparative example. As the fixing chamber, a thread made of polyester having a number of 50 was used. Further, the installation position of the intermediate chamber was set at a position of 45 mm from the distal end of the shaft of the artificial feather (the end opposite to the end connected to the base body 2 shown in Fig. 1). Further, the installation position of the core chamber was set at a position of 40 mm from the tip end of the artificial feathers.
Table 1 shows, in a circle, a case where the evaluation result is good, a case where the evaluation result is slightly good, and a case where the evaluation result is poor (anxiety point) with the aid of a checkerboard with respect to the above-mentioned emergency trajectory, emergency stability and emergency rotation.
As can be seen from Table 1, in the case of the sample IDs 1 to 6, the number of revolutions of the shuttlecock was slightly higher in the case where the intermediate chamber and the inner chamber (fixing chamber) were provided, , The emergency trajectory, emergency stability, and the state of rotation at the time of emergency. On the other hand, with respect to the sample ID 7 of the comparative example, feather clogging occurred by the impact test, and as a result, an emergency trajectory, emergency stability, and emergency rotation were significantly different from each other.
(Example 2)
Next, a comparison between the case where the fused attachment portion 41 shown in Fig. 1 is formed and the case where the intermediate chamber 15 and the solid chamber 17 are provided as shown in Figs. 18 and 19 The following experiment was carried out.
First, two samples (sample IDs 8 and 9) and a sample (sample ID 10) as a comparative example were prepared using the same base body and artificial feathers as examples of the present invention. As shown in FIG. 18 and FIG. 19, the sample ID 8 has the intermediate chamber 15 and the inertia chamber 17 disposed therein. In the sample ID 9, as shown in Fig. 1, the fused attachment portions 41 were formed to fix the artificial feathers 3 to each other. On the other hand, in the sample ID 10 as a comparative example, the artificial feathers were made independent from each other without forming the fused attachment portion and the like as described above. Two samples were prepared.
For the sample ID 8 to the sample ID 10 as described above, a test with high clearance and smash was performed. The clear refers to the entire flight course from the center or rear of the badminton court to the rear of the opponent's court with a large shuttlecock. The term " high clear " means that the shuttlecock is raised while the clearance is being raised, and the opponent is moved to the back of the court. Here, there is also called "clear clear", which means that the clear clear is an aggressive clear which is intended to peel off the opponent's head by relatively lowering the shuttlecock. Further, the smash refers to a flight that takes the shuttlecock at an acute angle with respect to the opponent's court from the overhead stroke, and is the most aggressive flight.
The results of the above-described hit test were as follows. First, regarding the experiment in which the samples were subjected to high clearing, the sample ID 8 and the sample ID 9 of the present invention were not stuck at the feather main body of artificial feathers even after high clearing at 150 rpm. In addition, the rotation of the shuttlecock in the emergency of the shuttlecock is almost the same as that of the natural shuttlecock, and there is no significant change during the test. Further, in both of the two samples, the emergency state is more stable than the sample ID 10 of the comparative example to be described later. In particular, the sample ID 9 is stable in the emergency state than the sample ID 8.
Next, with respect to the sample ID 10 of the comparative example, when the high clear was performed two times, the feather body portion of the artificial feathers broke. Then, after the detachment of the feather main body occurred, the rotation of the shuttlecock became extremely small and the emergency state became unstable.
Next, regarding the experiment of smashing each sample, the sample ID 8 and the sample ID 9 of the present invention samples did not cause stucking at the feather main body of artificial feathers even after smashing at 10 rpm. Further, as a result of observing the state immediately after the batting with a high-speed camera and observing it, the state of the artificial feather is slightly widened after the shuttlecock is crushed by the impact in the sample ID 8 and then the state before the batting. Further, in the sample ID 9, after the shuttlecock was crushed by the impact, the artificial feathers did not spread to almost the same extent as before the impact. That is, the flank of the artificial feather immediately after the strike was small on the side of the sample ID 9.
On the other hand, with respect to the sample ID 10 of the comparative example, when smashing was carried out one time, the feather body portion of the artificial feathers broke. As a result of observation with a high-speed camera as described above, the state immediately after the striking was observed. As a result, in the case of the sample ID 10, after the shuttlecock was crushed by the impact, artificial feathers were larger than the state before the striking ) It is in the open state.
From the above results, it can be seen that the sample IDs 8 and 9 of the present invention sample are superior in durability to the sample ID 10 of the comparative example. Further, from the viewpoint of the emergency characteristic, all of the sample IDs 8 and 9 of the present invention sample are superior to the sample ID 10 of the comparative example, and in particular, the sample ID 9 indicates a good emergency characteristic.
It should be understood that the embodiments and examples disclosed herein are illustrative and non-restrictive in all respects. It is intended that the scope of the invention be indicated by the appended claims rather than the foregoing description and that all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Industrial availability
The present invention is advantageously applied to an artificial shuttlecock for a badminton, in particular, an artificial shuttlecock in which an emergency performance must be held for a long period in an initial state.
