CN103717275B - badminton - Google Patents

Abstract

A kind of shuttlecock, especially a kind of outdoor shuttlecock, has dome-shaped head (100) and from ring-shaped skirt (102), isolates the axle (101) of head.Skirt section is connected to axle via radial spoke (111), and this radial spoke (111) extends between skirt section and an end of described axle.The leading edge (112) be positioned near head in skirt section isolates a distance of the length along axle along the longitudinal axis of shuttlecock from head.Radial spoke along its curved in length with form rifling track and distortion with when impacting with racket absorb impulsive force.

Description

badminton

technical field

The present invention relates to a shuttlecock, in particular, but not exclusively, to an outdoor shuttlecock configured to exhibit improved resistance to environmental influences, including, inter alia, wind forces, during flight.

Background technique

Shuttlecocks exist in many different forms, which are mainly divided into two categories, natural and synthetic. Shuttlecocks made from natural materials are usually preferred by the most experienced players and are used for all high level indoor games. These shuttlecocks usually have a cork head encased in goat hide, with the "shuttle" area formed by goose feathers.

Shuttlecocks, both natural and synthetic, are very sensitive to air resistance during flight, which in turn includes altitude, humidity, temperature and air flow factors. These latter environmental conditions have a profound impact on the shuttlecock's trajectory performance and flight direction and speed when used outdoors. The sensitivity of shuttlecocks to environmental conditions is exemplified by the large number of different types of natural game shuttlecocks with different weights to account for differences in altitude, humidity and temperature in different geographical locations. However, these shuttlecocks are specifically designed for indoor use, and when used outdoors, their intended flight characteristics are significantly impaired by wind forces.

Generally, traditional style shuttlecocks are made "fit" for outdoor use by including extra weight in the head. This added weight is usually only in the range of one to two grams. Other attempts to modify indoor shuttles for outdoor use include shorter skirts, smaller heads and various different materials for the skirts and heads. These outdoor shuttlecocks are generally designed to be used with conventional badminton rackets which considerably limit the additional weights that can be applied to reduce the effects of wind during flight. A large number of outdoor shuttlecocks have appeared, and they are completely unsuitable for use with traditional badminton rackets, being too large and too heavy.

With the aim of being used outdoors and with traditional badminton rackets, there have been many different types of mainly synthetic shuttlecocks and are described in CA388507, US2218593, US2302845, US2247486, US3752479, WO8400306, FR2594039, US4519613, FR2615745 ,DE4005918,DE19646508,US5860879,US6315687,US6709353,CN201195035,CN2863200,FR2890870,DE102005039121，CN201105139，CN201200778，CN201768335，GB1543635，CN201815075，GB926049，US3359002，DE202010006986，JP54039176中公开了多种实例。

However, there is a need for a shuttlecock, which is particularly optimized for outdoor use, exhibiting improved resistance to environmental influences including, inter alia, wind.

Contents of the invention

Therefore, the inventors provide a shuttlecock that includes physical properties that have been discovered through experimental studies to reduce the influence of wind on the trajectory or flight of the shuttlecock when used outdoors. The shuttlecock of the present invention, in one embodiment, can be considered to comprise three basic components, i) a head designed to be struck by a racket, ii) a head which is largely controlled and physically separated by at least one elongated shaft The skirt portion and the skirt portion of the flight characteristics of the shuttlecock, iii) at least one elongated shaft. Thus, the skirt extends discontinuously from the head to provide a gap or gap between the head and the skirt, with the shaft bridging the gap or gap.

According to a first aspect of the present invention there is provided a shuttlecock comprising: a head having a dome-shaped portion and a base below the dome-shaped portion; a shaft extending from the base of the head; an annular a skirt having a rear edge positioned furthest from the head and a leading edge positioned closest to the head relative to the longitudinal axis of the shuttlecock; radial spokes extending from the head towards the shaft the region of the farthest end of the shuttlecock and is connected to the skirt; wherein the leading edge of the skirt is separated from the head by a distance along the length of the shaft relative to the longitudinal axis of the shuttlecock; the shuttlecock is characterized in that the skirt forms is integral; and, each radial spoke includes a curved portion in the radial direction between the shaft and the skirt.

Preferably, each spoke comprises a curved portion extending in the axial direction between the shaft and the skirt. More preferably, the radially curved portion of each spoke comprises a concave region and a convex region along its length. Optionally, each spoke is twisted along its length, said twist being arranged in the "depth" of the spoke extending in the longitudinal direction of the shuttlecock. The advantage of the curved portion is that each spoke can be compressed by its curved portion to absorb impact when struck with a badminton racket. In addition, the twist in each spoke forms the rifling trajectory in the process providing or assisting the trajectory of motion. By adjusting the twist of each spoke relative to the longitudinal direction of the shuttlecock, the degree to which the rifling tracks are formed can be adjusted.

Preferably, said shuttlecock comprises three spokes extending between said shaft and said skirt. Preferably, each spoke terminates at a common central hub having a mounting portion via which the shaft is detachably mounted at the central hub. Optionally, the spokes may be integrally formed with the shaft of the same material. Optionally, the spokes, shaft and skirt are integrally formed.

Optionally, each spoke comprises a blade-like structure comprising a width extending perpendicular to the longitudinal axis and a depth extending in the longitudinal axis, wherein the depth is greater than the width. Optionally, the width of each spoke is greater at the region towards the shaft than towards the skirt. Optionally, the depth of each spoke in the direction of the longitudinal axis increases in the radially outermost region in contact with said skirt.

Preferably said head is removably mounted at the shaft and is not integrally formed. Alternatively, the head may be integrally formed with the shaft. Preferably, the shaft includes a mounting tongue and the head includes a mouth at the base to receive the tongue and mount the head at the shaft. Alternatively, the shaft and head may comprise any form of releasably connected locking means including, inter alia, bayonet, threaded, snap or crimp connectors such that the shaft is connected to the The head can be attached and easily detached by a pulling, pushing or twisting motion applied to the head and/or shaft.

Optionally, the shuttlecock further comprises a head mounting portion detachably connected to the shaft and configured to mount the head via the base below the dome shaped portion. Preferably, the head mounting portion includes a through hole for receiving a portion of an end region of the shaft to connect the head mounting portion and the shaft. Optionally, the head mounting portion includes a mounting tongue and the head includes a mouth at the base to receive the tongue and mount the head at the shaft.

Preferably, the skirt comprises a mesh structure extending between the leading edge and the trailing edge. The term "mesh structure" includes all manner of mesh and lattice-type structures formed from relatively thin filaments or fabric materials to form open cell-type structures having pores through which air can pass. The skirt may comprise regions of the mesh having different material thicknesses and different mesh patterns, wherein the density of the holes, including the size of the gaps between the filaments or fabrics of the mesh, is variable. Furthermore, the thickness of the mesh structure's filaments or fabric may be different at different regions of the skirt.

Optionally, the outwardly facing surface of the skirt is convex between the leading and trailing edges. Alternatively, the outwardly facing surface of the skirt may be concave or may be linear so as to define a hollow frusto-conical shape.

Optionally, said skirt comprises a continuous annular formation extending circumferentially about said longitudinal axis. Optionally, the skirt includes radially extending perforations increasing in size in an axial direction from the leading edge to the trailing edge. The "circular skirt" referred to in this specification includes circular and polygonal skirt geometries extending around the central longitudinal axis of the shuttlecock.

Optionally, the skirt includes radially extending perforations increasing in size in an axial direction from the leading edge to the trailing edge.

It has been found that the separation of the head and skirt along the length of the shuttlecock reduces the deflection effect of the wind. That is, with reference to conventional shuttlecocks in which the skirt extends directly from the head, the shuttlecock of the present invention has no skirt at the area immediately behind the head, where this void space is only occupied by the thinner shaft. Therefore, any lateral wind that hits the shuttlecock during flight is able to pass through this open void area. Therefore, the inventors have optimized the distance over which the skirt extends in the longitudinal direction of the shuttlecock, so as to provide the desired characteristics of turning speed and "feel" during a stroke. By virtue of the spoke and skirt design, the present invention also provides ideal gyroscopic precession in mirroring the second half of the shuttlecock's trajectory in natural badminton.

Optionally, each spoke comprises a thickness in the range of 0.8mm to 0.4mm. Optionally, said skirt comprises a thickness in the range of 0.4mm to 0.2mm. Optionally, the skirt includes a tapered thickness that decreases from the leading edge to the trailing edge. Preferably, said shaft, spokes and skirt comprise thermoplastic material and are produced by an injection molding process. Preferably, the material comprises any of the following: polyamide (preferably nylon), polypropylene, polyethylene, polystyrene, polyvinyl chloride, polytetrafluoroethylene (PTFE), polyester, polylactic acid, polyurethane, acrylic kind. Alternatively, the shaft, skirt and/or spoke material may comprise a rubberized material, a rubberized thermoplastic material and optionally a copolymer, preferably a polyester-polyether copolymer.

Preferably, the head may comprise a natural material such as cork optionally covered with goat hide. Alternatively, the head may comprise synthetic and optionally thermoplastics, rubber, foams, and especially polyurethane foam or polyethylene foam.

According to a second aspect of the present invention there is provided a shuttlecock kit comprising: at least one head having a dome-shaped portion and a base below the dome-shaped portion; at least one shaft, said at least one shaft can extend from the base of said head; a plurality of annular skirts, each having a rear edge capable of being positioned farthest from the head relative to the longitudinal axis of the shuttlecock and a rear edge capable of being positioned closest to the head; leading edge; radial spokes extending inwardly from each skirt toward a longitudinal axis bisecting each annular skirt from the center, each spoke of each skirt comprising A curved region extending to the skirt; wherein the skirt is formed as a single body and comprises respective different shapes and/or sizes and is interchangeable with said at least one head to change the shape and/or size of the shuttlecock.

Description of drawings

Specific embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

Figure 1A is a perspective view of a shuttlecock according to an embodiment of the present invention, said shuttlecock having a head, a skirt, and an intermediate shaft connecting said head and skirt;

Fig. 1B is another perspective view of the shuttlecock in Fig. 1A;

Figure 1C is a side elevational view of the shuttlecock in Figure 1B;

Figure 2A is an exploded perspective view of the shuttlecock in Figure 1C;

Figure 2B is an exploded side view of the shuttlecock in Figure 2A;

Fig. 2C is a perspective view viewed from below the head of the shuttlecock of Fig. 2A;

Figure 3A is a plan view of the shuttlecock in Figure 1C;

Fig. 3B is a bottom view of the shuttlecock in Fig. 1C;

4A is a side elevational view of a skirt having a linear outward facing surface according to another embodiment of the present invention;

Figure 4B is a plan view of the skirt of Figure 4A;

Figure 4C is a perspective view of the skirt of Figure 4B;

5A is a side elevational view of a skirt having a concave outwardly facing surface according to yet another embodiment of the present invention;

Figure 5B is a plan view of the skirt of Figure 5A;

Figure 5C is a perspective view of the skirt of Figure 5B;

6 is a perspective perspective view of a shuttlecock according to yet another embodiment of the present invention, wherein the skirt and the mounting shaft are integrally formed and the head mounting portion is not integrally formed;

Fig. 7A is an exploded bottom view of the shuttlecock of Fig. 6;

Fig. 7B is an exploded perspective top view of the shuttlecock shown in Fig. 6 .

detailed description

Referring to FIGS. 1A to 3B , the shuttlecock includes three basic components: a head 100 , a skirt 102 and an intermediate shaft 101 extending between the head 100 and the skirt 102 . The head 100, shaft 101 and skirt 102 are co-aligned along a longitudinal axis 121 bisected centrally through the shuttlecock.

The head 100 has a dome-shaped upper region 103 which provides the strike zone of the area of the shuttlecock intended to come into contact with the shuttlecock racket. A cylindrical portion 104 extends immediately below the dome 103 and terminates at a base 105 . The shaft 101 has a straight elongated portion 106 that tapers or flares out at an upper region 107 . The funnel region 107 terminates at an annular disk 108 extending radially from the elongated shaft 106 . A hollow cylindrical tongue 200 extends from the upper facing surface of the disc 108 and includes an annular lip 201 extending circumferentially around the upper edge of the tongue 200 . Open cavity 202 extends the length of hollow tongue 200 from disc 108 to lip 201 . According to a further particular embodiment, the tongue 200 may not include the interior cavity 202 and may be formed as a solid extension extending from the disc 108 . Furthermore, the material of the tongue 200 can be different from that of the shaft 101 in order to change the "weight" properties of the shuttlecock at the head 100 area.

Head 100 includes an internal cavity 203 extending from base 105 through cylindrical region 104 towards dome 103 . The depth of the cavity 203 is approximately equal to the length of the tongue 200 and the diameter of the cavity 203 is approximately equal to the diameter of the tongue 200, if not less. The lip 201 includes a diameter slightly larger than the diameter of the cavity 203 to provide a friction fit when the tongue 200 fits within the cavity or mouth 203 of the head 100 and the base 105 engages the upwardly facing surface of the disc 108 to provide a friction fit. Such that the head 100 is detachably connected to the shaft 101 .

The skirt 102 is annular about a longitudinal axis 121 and is spaced radially from the axis 121 by a distance that varies along the length of the skirt 102 from the leading edge 112 to the trailing edge 113 . The skirt 102 thus extends radially outwards from the central axis 121 along the length of the shuttlecock in the direction from the head 100 to the skirt 102 . The body of the skirt 102 is formed by a mesh structure in the form of parallel aligned strips 114 extending between the leading edge 112 and the trailing edge 113 to form an inwardly facing surface 301 to an outwardly facing surface 305 extends through the plurality of apertures 115 , 122 of the skirt 102 . The strip 114 is formed as an elongated thin region of the skirt 102 such that the holes 115, 122 are also elongated and run along the length of the skirt 102 between the leading edge 112 and the trailing edge 113 in the same direction as the longitudinal axis 121 Extend a distance. A first set of mesh structures 117 extends from the leading edge 112 towards the trailing edge 113 and terminates less than half the distance between these two edges 112 and 113 to define an elongated aperture 122 . A second set of mesh structures 116 extends between edges 112 and 113 for more than half the length of skirt 102 from trailing edge 113 towards leading edge 112 to define elongated apertures 115 . A narrow annular collar 118 extends between the two sets of mesh structures 116 , 117 for a distance of about one-third of the distance between the edges 112 and 113 closest to the leading edge 112 . Furthermore, a similar annular collar 119 extends between the mesh structure 116 and the trailing edge 113 and a third annular collar 120 extends between the leading edge 112 and the mesh structure 117 . Thus, the length of the holes 122 of the first set of mesh structures 117 is smaller than the length of the holes 115 of the second set of mesh structures 116 . The ferrules 118, 119, 120 have no holes 115, 122 and add to the overall stiffness of the skirt 102 and its resistance to bending, folding and twisting when struck by a racket.

The skirt 102 is connected to the shaft 101 by radial spokes 111 extending from the inwardly facing surface 301 of the skirt 102 to a central hub 109 located on the longitudinal axis 121 . 3A and 3B for details, each spoke 111 is curved along its length between the hub 109 and the skirt 102 to provide means for absorbing the impact force imparted to the shuttlecock each time it is struck with the racket. In particular, the curved portion of each spoke 111 includes a concave region 303 and a convex region 304 .

Each spoke 111 includes a depth extending in said longitudinal axis direction 121 that decreases from the region of the hub 109 towards the skirt 102 such that the separation distance between the leading edge 207 and the trailing edge 208 of each spoke 111 is from The hub 109 tapers towards the skirt 102 . Additionally, each spoke is twisted along its length. Since the hub end 206 of each spoke 111 is connected to the hub 109 along a helical path (extending above the outer surface of the hub 109) while the opposing skirt end 300 of each spoke 111 is at region 302 in a direction generally parallel to the longitudinal The alignment of the axis 121 is connected to the skirt 102 creating a twist between the leading edge 112 and the trailing edge 113 . Accordingly, a substantial portion of the surface 123 of each spoke 111 extending between the edges 207 and 208 is aligned at a small acute angle with respect to the longitudinal axis 121 . This different connection alignment of each spoke 111 (at hub 109 and skirt 102) provides a tapering length direction along the length of each spoke 111 from hub end 206 towards skirt end 300. The Twisted 305. This twist is beneficial in providing and/or facilitating rifling of the shuttlecock during the trajectory of motion. Each region 302 is devoid of holes 122 and is disposed on the inwardly facing surface 301 between the intermediate ferrule 118 and the leading edge ferrule 120 .

Central hub 109 is substantially hollow and includes an open-ended cavity 204 to receive second end 110 or shaft 101 . The diameter of the shaft end 110 is substantially equal to the diameter of the hub cavity 204 to provide a friction fit and allow the shaft 101 to mate with and be removably attached to the skirt 102 . Additional locking connections (not shown) may be provided at shaft end 110 and hub 109 to releasably lock shaft 101 to skirt 102 . Suitable connections may include bayonet-type, twist-lock, javelin-style or other push/pull interconnections such that shaft 101 and skirt 102 are connected and detached by simple push/pull and/or twisting motions. A similar connection may also be provided at the head 101 and the first end of the shaft 101 to releasably lock the head 100 to the shaft 101 .

Another embodiment of the skirt 102 is shown in FIGS. 4A to 4C . Referring to Figure 4A, the annular outwardly facing surface 400 of the skirt 102 between the edges 112, 113 is substantially linear. In addition, the connection region 401 of each spoke 111 between the leading edge 207 and the trailing edge 208 is aligned substantially parallel to the longitudinal axis 121 , contrary to the embodiment in FIGS. 1A to 3B . Accordingly, each spoke 111 in the embodiment of FIGS. 4A-4C does not include the same twist 305 shown in FIG. 3B . However, each spoke 111 in the embodiment of FIGS. 4A to 4C has a double curved concave portion 303 and convex portion 304 along its length between the hub 109 and the inwardly facing surface 301 of the skirt 102 .

5A to 5C show yet another embodiment in which the outwardly facing surface of the skirt 102 between the leading edge 112 and the trailing edge 113 is a recess 500 relative to the longitudinal axis 121 . According to this further embodiment, the spokes 111 are identical to the embodiment described with reference to FIGS. 4A to 4C .

6 to 7B show yet another embodiment of the present invention. Unlike the previous embodiments, this further embodiment comprises three separate parts, the flight part (or skirt 102 ), the head part 100 and the head mounting part 705 . An elongated shaft 101 extending between the head 100 and the skirt 102 according to yet another embodiment is integrally formed with the skirt 102 and extends from a hub 109 .

In particular, shaft 100 includes a main shaft 600 extending axially from hub 109 and a fixed shaft 700 extending coaxially with shaft 600 . The main shaft 600 is tapered and includes a diameter that decreases in a direction from the skirt 102 towards the head 100 . Similarly, the fixed shaft 700 is also tapered and includes a diameter that decreases in a direction from the skirt 102 to the head 100 . In addition, the spindle 600 includes a ramp-off portion 701 at the junction of the fixed shaft 700 and the spindle 600 , wherein this portion 701 presents an annular retaining collar at the junction between the shafts 600 , 700 .

The head support 705 comprises a disc-shaped base 108 with a funnel-shaped bottom side 107 and a hollow cylindrical tongue 200 protruding from the opposite upper surface, as described with reference to the first embodiment. However, the funneled portion 107 terminates in the axial center mounting hub 703 intended to face the skirt 102 when the shuttlecock is assembled. The hub 703 includes a through hole that extends centrally through the head support 705 and is sized to accommodate the end region 704 of the stationary shaft 700 . The diameter of the hole 702 is slightly smaller than the shaft diameter 700 at the region of the slow-down portion 701, so that the shaft 700 can be tightly held by the frictional contact force between the hole 702 and its outer surface. The through-hole 702 includes a tapered inner surface such that the diameter of the hole decreases from the bottom-side funnel-shaped region 701 towards the upper region of the support 705 . Thus, the shaft 700 can be fully inserted into the bore 702 such that the portion 701 is positioned against the hub 703 .

As with the previous embodiments, the skirt 102 includes a plurality of holes to achieve desired flight characteristics. According to this further embodiment, the holes 603 are arranged in twelve evenly spaced, circumferentially distributed groups 602, wherein each group comprises six rows of perforations 603 in the axial direction. Furthermore, the size of the perforations 603 increases from a first set 604 located towards the leading edge 112 to a set of larger sized perforations located towards the trailing edge 113 when the shuttlecock is oriented in flight. Furthermore, the holes 603, 604 are sloped on the inner surface of the annular skirt 102 to facilitate production.

As shown in FIGS. 6 and 7B , each of the three radial spokes 111 is connected to the inner surface of the skirt 102 at a respective skirt end 601 . The connecting length of each spoke end 601 is approximately equal to the axial length of the skirt 102 between the leading edge 112 and the trailing edge 113 . Correspondingly, the axial length of each spoke 111 decreases from the skirt end 601 to the connection region 401 at the hub 109 .

As shown in FIGS. 6-7B , each spoke 11 includes the same double twist (concave and convex bends) along its length extending in a radially outward direction from the shaft 600 to the skirt 102 . Accordingly, as detailed in the foregoing embodiments, the curved portion is configured so that the spokes can twist and absorb impact force applied from the racket to the shuttlecock in addition to causing spin forming the rifling track during flight. As previously described in detail, each spoke 111 is blade-shaped and comprises a greater depth in the direction of the longitudinal axis of the shuttlecock relative to its respective width in the vertical (or radial) direction.

The shuttlecock of the present invention is advantageous because the skirt 102 is a single piece which provides structural integrity to withstand load forces. This is in contrast to skirts that are formed as a collection of separate components such as natural or synthetic feathered blades. Accordingly, this allows a minimum number of spokes 111 to achieve the required strength of the connection between the circumferentially extending skirt 102 and the axial shaft 600 . These spokes may then be spaced apart in a circumferential direction (about the axis 101 ) in order to have a greater influence on the flight characteristics. To further enhance the flight characteristics and strength of the shuttlecock, the annular skirt 102 includes a tapered wall thickness from the leading edge 112 to the trailing edge 113 . According to the particular embodiment of FIGS. 6 to 7B , this wall thickness is reduced from 0.5 mm at the leading edge 112 to 0.35 mm at the trailing edge 113 .

As detailed with reference to both embodiments, the spokes 111 are separated from the head 100 , and in particular the head base 105 , for substantially the majority of the length of the shaft 101 (including shafts 600 and 700 ). This separation facilitates the flow of air over the spokes 111 and skirt 102 to achieve the desired flight characteristics provided by the skirt perforations 603 , 604 and the curved portions of the spokes 111 .

By non-integrally forming the skirt 102 and shaft 101 in one embodiment or non-integrally forming the shaft 101 and head mounting portion 705 according to another embodiment and releasably locking the separate parts together, the user can Interchange different skirt and head pieces. According to further embodiments, different skirts 102 having very different shapes, body thicknesses, mesh structures, weights and materials may be provided and interchanged. In addition, the spokes 111 of each skirt may be the same or different, and include different curvatures in the concave and convex regions 303,304, different twists 305 and differences between the leading and trailing edges 207,208. thickness of. Furthermore, according to further embodiments, each skirt 102 may include a different number of spokes and/or a different configuration of perforations 112 , 115 , 603 , 604 extending radially from the central hub 109 to the inwardly facing surface 301 .

Claims (24)

1. A shuttlecock, comprising: a head having a dome-shaped portion and a base below the dome-shaped portion; an elongated shaft extending from the base of the head; an annular skirt having a rear edge positioned furthest from the head relative to the longitudinal axis of the shuttlecock and a front edge positioned closest to the head; radial spokes extending from a region proximate the end of the elongated shaft furthest from the head and connected to the annular skirt; It is characterized by: wherein the separation of the leading edge of the annular skirt relative to the longitudinal axis of the shuttlecock from the head is substantially equal to the length of the elongated shaft to provide an axial gap between the head and the annular skirt or gap; the annular skirt is formed in one piece and each radial spoke is connected to a region of the annular skirt; and Each of said radial spokes is curved along its radial length between said elongated shaft and annular skirt. 2. The shuttlecock as claimed in claim 1, wherein each radial spoke further comprises a curved portion extending in the axial direction between the elongated shaft and the annular skirt. 3. A shuttlecock as claimed in claim 1 or 2, comprising three radial spokes extending between the elongate shaft and the annular skirt. 4. The shuttlecock as claimed in claim 1 or 2, wherein each radial spoke terminates at a common central hub having a mounting portion, wherein said elongated shaft is detachably mounted centrally via said mounting portion at the hub. 5. The shuttlecock of claim 2, wherein the curvature of each radial spoke in the radial direction includes concave and convex regions along its length. 6. The shuttlecock as claimed in claim 1 or 2, wherein the radial spokes are integrally formed with the elongated shaft. 7. The shuttlecock according to claim 1 or 2, wherein said radial spokes, said elongated shaft and said annular skirt are integrally formed. 8. The shuttlecock according to claim 1 or 2, wherein each radial spoke comprises a blade-like structure comprising a width extending perpendicular to the longitudinal axis and a depth extending along the longitudinal axis, wherein the depth greater than the stated width. 9. The shuttlecock as claimed in claim 1 or 2, wherein each radial spoke includes a twist along its length. 10. The shuttlecock according to claim 1 or 2, further comprising a head mounting portion detachably connected to the elongated shaft and configured to mount a head via a base below the dome-shaped portion. 11. The shuttlecock according to claim 10, wherein the head mounting portion includes a through hole to accommodate a portion of an end region of the elongated shaft to connect the head mounting portion and the elongated shaft. 12. The shuttlecock of claim 10, wherein the head mounting portion includes a mounting tongue, and the head includes a mouth at the base for receiving the tongue and mounting the head on a thin at the long axis. 13. The shuttlecock according to claim 1 or 2, wherein said annular skirt comprises a mesh structure extending between a leading edge and a trailing edge. 14. The shuttlecock according to claim 1 or 2, wherein the outwardly facing surface of the annular skirt is convex between the leading edge and the trailing edge. 15. The shuttlecock according to claim 1 or 2, wherein the height of each radial spoke in the direction of the longitudinal axis increases in the radially outermost region in contact with the annular skirt. 16. The shuttlecock according to claim 1 or 2, wherein said annular skirt comprises a continuous annular structure. 17. The shuttlecock according to claim 1 or 2, wherein the annular skirt comprises perforations increasing in size in the axial direction from the leading edge to the trailing edge. 18. The shuttlecock according to claim 1 or 2, wherein the annular skirt comprises perforations distributed in groups in a circumferential direction around the annular skirt. 19. The shuttlecock according to claim 1 or 2, wherein said annular skirt comprises a tapered thickness decreasing from the leading edge to the trailing edge. 20. The shuttlecock according to claim 1 or 2, wherein said shuttlecock comprises any one or combination of the following: Polyamide; polypropylene; polyethylene; polystyrene; PVC; Polytetrafluoroethylene (PTFE); Polyester or Dacron; polylactic acid; Polyurethane; acrylic acid; Polyester-polyether copolymer. 21. The shuttlecock according to claim 20, wherein said shuttlecock comprises nylon. 22. A multi-part shuttlecock kit comprising: at least one head having a dome-shaped portion and a base below the dome-shaped portion; at least one elongated shaft extendable from the base of the head; a plurality of annular skirts, each annular skirt having a rear edge positionable furthest from the head relative to the longitudinal axis of the shuttlecock and a front edge positionable closest to the head; It is characterized by: radial spokes extending inwardly from each annular skirt toward a longitudinal axis bisecting each annular skirt from the center, each radial spoke of each annular skirt between the elongated shaft and the annular skirt The length between the parts along its radial direction is curved; Wherein each annular skirt is formed as a single body and each radial spoke is connected to a region of a corresponding annular skirt, each annular skirt comprises a respective different shape and/or size such that the annular skirt can communicate with said at least One head is interchangeable to change the shape and/or size of the shuttlecock. 23. The multi-part shuttlecock set of claim 22, wherein each annular skirt is integrally formed with a respective radial spoke and a respective elongated shaft. 24. A multi-part shuttlecock kit as claimed in claim 22 or 23, further comprising at least one head mounting portion connectable to one end of said elongated shaft, said at least one head mounting portion configured as a mounting head base of the department.