A shuttlecock for playing badminton

Abstract

The utility model relates to a badminton technology field, especially a kind of feather and shuttlecock for badminton.The feather for badminton, including feather part;And the artificial feather shaft of supporting the feather part, the artificial feather shaft has feather joint and handle part connected with feather joint;The component of constituting the feather part includes: several feather branches, the feather branch has thin branch part with the same plane and different extension direction from the feather branch on the feather branch;The feather branch is fixedly connected on the feather joint;The surface of the handle part is equipped with the convex part for preventing the up and down sliding of the rope-like component of connected feather.The feather for badminton provided by the utility model has better long-term use performance, the convex part can continuously resist the impact force and airflow tearing force of hitting ball, avoid the loosening and sliding of rope-like component, thereby maintaining the stable spacing between feathers and accurate flight trajectory, and further recycling waste feathers, so that the flight trajectory of the prepared shuttlecock is more consistent with conventional shuttlecock.

Description

Technical Field

[0001] This utility model relates to the field of badminton technology, and in particular to a badminton feather and a badminton shuttlecock. Background Technology

[0002] In badminton manufacturing, the stability of the feathers and shafts directly determines the core performance of the product. The rope-like components used to bind the shafts and precisely position the feather spacing (collectively known in the industry as "tying lines") are crucial for maintaining the aerodynamic stability of the shuttlecock. Current technology commonly employs a "mechanical winding + adhesive reinforcement" process to prevent the tying lines from sliding up and down along the shaft axis: automated equipment tightly winds the tying lines around the middle section of the shaft (9-11mm from the feather root, the point of force equilibrium) at a 35°-40° angle, then applies hot melt adhesive or modified epoxy resin, hoping to limit displacement through "physical friction + chemical adhesion." However, in practical applications, even with rigorous adhesive treatment, the tying lines still have a 15%-30% probability of axial slippage. This problem is more pronounced in high-intensity scenarios such as professional training and competitive matches, becoming a core bottleneck restricting the quality and lifespan of badminton shuttlecocks. The adhesive method cannot completely solve the slippage problem due to the combined effects of the feather shaft structure, the binding material, and the stress experienced during use. From the feather shaft structure, although the surface of the rachis has fine longitudinal ridges, it is generally a smooth cylinder or ellipse. Furthermore, some natural goose / duck feather shafts have 0.02-0.05mm thick sheath fragments remaining. These fragments form an "isolation layer" between the feather shaft and the adhesive, causing the adhesive to only adhere to the surface of the fragments and unable to form a molecular-level bond with the rachis substrate (dense keratin fiber bundles). The measured adhesive shear force is only 2.5-3.5N, far lower than the 5-8N instantaneous tensile force the feathers experience during impact. From the binding material, it is mostly a "high-melting-point nylon core + low-melting-point polyethylene outer layer" structure. The temporary bond between the molten outer layer and the adhesive is easily damaged by the high-frequency impact of the racket swing, the lateral tearing force of the airflow, and changes in temperature and humidity (high humidity softening, high temperature aging of the adhesive), leading to peeling and cracking of the adhesive interface, and the slippage of the binding material after it loses its restraint. Slippage of the binding string has significant harmful effects on badminton: First, it disrupts the preset spacing of the feathers (industry standard error ≤0.1mm), causing uneven force on each feather and lateral drift of the flight trajectory by 4-8cm, making it difficult for athletes to predict the shot and reducing the accuracy of the shot by 20%-30%. Second, it changes the preset angle of 87°-90° between the feathers and the shuttlecock base, disrupting the rotational stability axis and causing "wobbling and falling" and "irregular spin," with a falling speed deviation exceeding 0.25m / s, seriously affecting the feel of the shot. Third, it causes the binding string tension to loosen, making the feathers loose and prone to feather breakage and feather shaft loss during the shot, reducing the service life from 3-5 games to 1-2 games, increasing the cost of use, and in professional competitions, it may even interrupt the game due to abnormal trajectory, disrupting the rhythm and affecting fairness. Although the industry has tried to increase the adhesive thickness (from 0.1mm to 0.2mm) and increase the winding density (from 5 turns per centimeter to 8 turns per centimeter), it has not solved the structural defects of the hair shaft and the adhesion failure caused by stress. Therefore, limiting the slippage of the binding wire from the structural level has become a technical problem that the industry urgently needs to overcome. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides a badminton feather and a badminton shuttlecock.

[0004] To solve the above-mentioned technical problems, one of the technical solutions provided by this utility model is as follows: A badminton shuttlecock feather, comprising the feather portion; and An artificial feather shaft that supports the feathers, the artificial feather shaft having a feather joint and a shank connected to the feather joint; The components constituting the feather include: a plurality of barbs, each barb having a twig portion that is in the same plane as the barb and has a different extension direction from the barb; the barb is fixedly attached to the barb joint. The surface of the handle is provided with protrusions to prevent the rope-like component connecting the feathers from sliding up and down.

[0005] The badminton feathers provided by this utility model have a protrusion on the handle of the artificial feather shaft, which can achieve at least one of the following beneficial effects: First, it effectively solves the slippage problem caused by the material characteristics of the artificial feather shaft—the smooth surface of the artificial feather shaft makes it easy for the rope-like component (tying rope) to shift, while the protrusion provides axial restraint for the rope-like component through a physical blocking structure, preventing it from sliding up and down along the handle; Second, it optimizes the stability of the adhesive curing process. During the adhesive curing stage after the rope-like component is wound, the protrusion can fix the initial winding position of the rope-like component, preventing it from shifting due to external force or process operation before curing, and ensuring winding accuracy; Third, it ensures the long-term performance of the badminton shuttlecock. The protrusion can continuously resist the impact force of the shuttlecock and the tearing force of the airflow, preventing the rope-like component from loosening and slipping, thereby maintaining the stability of the feather spacing and the accuracy of the flight trajectory, reducing the scrap of the badminton shuttlecock caused by component slippage, reducing the cost of use, and improving the consistency of product quality and service life.

[0006] In one embodiment of this utility model, the feather barb is fixed to the feather joint by a connector.

[0007] In one embodiment of the present invention, the connector includes a connecting portion that contacts the artificial feather shaft and an extension portion that extends along the width direction of the artificial feather shaft; the feather barb is fixed to the extension portion.

[0008] In one embodiment of this utility model, the connector is a hair-like attachment.

[0009] In one embodiment of this utility model, the artificial feather shaft is a hollow tube with a diameter that gradually decreases from thick to thin from the shank to the feather joint. Preferably, the hollow carbon fiber tube is partially or completely filled with foam material; Preferably, the artificial feather shaft has a certain degree of curvature as it extends outward from the shank towards the feather joint. Preferably, the absolute value of the curvature is less than 0.8 cm.

[0010] In one embodiment of this utility model, the cross-section of the artificial feather shaft is trapezoidal or rectangular.

[0011] In one embodiment of this utility model, the protrusion includes two protrusions spaced apart along the length direction of the artificial feather shaft; Preferably, the distance between the two protrusions is equal to the diameter of the rope-like component.

[0012] In one embodiment of the present invention, the feather attachment has opposing first and second side surfaces; The first side is recessed inward to form one or more first recesses for inserting the feathers; The second side is recessed inward to form one or more second recesses for inserting the feathers.

[0013] In one embodiment of the present invention, the upper surface of the feather shaft includes at least one stepped surface that is not in the same plane, and the horizontal height of the upper surface of the handle is higher than the horizontal height of the upper surface of the feather joint.

[0014] The second technical solution provided by this utility model is as follows: A badminton shuttlecock includes a head, a number of feathers, and at least one string-like component; The feathers mentioned above are feathers used for badminton shuttlecocks; The shanks of the plurality of feathers each have a first end and a second end opposite to each other, the first end being away from the feather joint; the first end of the plurality of feathers is inserted into the inner side of the ball head; The feathers are secured to each other by the rope-like component.

[0015] Other features and beneficial effects of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other beneficial effects of this invention can be realized and obtained through the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figure.

[0017] Figure 1 This is a schematic diagram of the structure of the artificial feather shaft provided in the first embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of a badminton feather provided in the first embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 A front view of the artificial feather shaft provided by this utility model; Figure 6A front view of another artificial feather shaft provided by this utility model; Figure 7 This is a schematic diagram of the structure of a badminton feather provided in the second embodiment of the present invention; Figure 8 for Figure 7 Enlarged view of point E in the middle; Figure 9 This is a front view of the artificial feather shaft provided in the third embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the artificial feather shaft provided in the third embodiment of the present invention; Figure 11 for Figure 10 Enlarged view of point G in the middle; Figure 12 The third embodiment is a variation located in Figure 10 Enlarged view of point G in the middle; Figure 13 This is a schematic diagram of the structure of the artificial feather shaft provided in the fourth embodiment of the present invention; Figure 14 for Figure 13 Enlarged view of point N; Figure 15 This is a schematic diagram of the structure of a badminton feather provided in the fifth embodiment of the present invention; Figure 16 for Figure 15 Enlarged view of point M in the middle; Figure 17 This is a schematic diagram of the structure of a badminton feather provided in the sixth embodiment of the present invention; Figure 18 for Figure 17 Enlarged view of point X in the middle; Figure 19 This is a schematic diagram of the structure of a badminton feather provided in the seventh embodiment of the present invention; Figure 20 for Figure 19 Enlarged view of point C in the middle; Figure 21 This is a schematic diagram of the structure of a badminton feather provided in the eighth embodiment of the present invention; Figure 22 for Figure 21 Enlarged view of point D in the middle; Figure 23 A front view of a badminton feather provided in the eighth embodiment of this utility model; Figure 24 A front view of a badminton feather provided in the ninth embodiment of this utility model; Figure 25 The badminton shuttlecock provided in this embodiment of the utility model; Figure 26 for Figure 25 Enlarged schematic diagram at point F; Figure 27 for Figure 25 A top view of the badminton shuttlecock in the illustrated embodiment.

[0018] Figure label: 10. Head; 20. Artificial feather; 210. Artificial rachis; 210a. Upper surface of rachis; 210b. Lower surface of rachis; 211. Feather joint; 211a. First side; 211b. Second side; 211c. Upper surface of feather joint; 212. Groom; 212a. Upper surface of groom; 220. Feather; 221. Barb; 2111. First recess; 2112. Second recess; 230. Protrusion; 240. Connector; 30. Rope-like component; 40. Fixing plate. Detailed Implementation

[0019] In the description of this utility model, it should be noted that all terms used in this utility model (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains, and should not be construed as limiting this utility model; it should be further understood that the terms used in this utility model should be understood to have the same meaning as those in the context of this specification and in the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this utility model.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The feathers provided in this embodiment of the invention are used in badminton shuttlecocks, and the weight of the feathers is generally between 0.100g and 0.125g.

[0025] Please refer to Figures 1 to 17 The badminton feather 20 mainly includes an artificial shaft 210 and a feather 220; Please continue to refer to this. Figure 1 and Figure 3 The artificial feather shaft 210 is used to support the feather 220. The artificial feather shaft 210 has a feather joint 211 and a handle 212 connected to the feather joint 211. In this embodiment, the artificial feather shaft 210 is a hollow tube with a diameter that gradually decreases from the handle 212 to the feather joint 211. The artificial feather shaft adopts a diameter that gradually decreases, and its core is to optimize mechanical performance and improve flight stability. Specifically, from the perspective of structural mechanics, the diameter of the handle side of the artificial feather shaft is thicker, which can enhance the resistance to bending and impact, prevent the feather from breaking due to concentrated force at the moment of hitting the shuttlecock, and at the same time provide stable support for the feather. The diameter that gradually decreases towards the feather can effectively reduce the overall weight of the artificial feather shaft, reduce the air resistance and inertia of the feather during flight, and enable the shuttlecock to maintain a more accurate flight trajectory after being hit by the racket, which meets the aerodynamic requirements and is especially suitable for the high requirements of flight consistency in competitive scenarios. In addition, the gradually changing tube diameter can balance the rigidity and toughness of the artificial feather shaft, avoiding insufficient flexibility due to excessive thickness or easy damage caused by excessive thinness.

[0026] In some preferred embodiments, the artificial feather shaft 210 is a hollow carbon fiber tube with a diameter that gradually decreases from thick to thin from the handle 212 to the feather joint 211. Preferably, the hollow carbon fiber tube is partially or completely filled with foam material, which provides the artificial feather shaft 210 with a lightweight effect, and the outer carbon fiber provides a certain degree of rigidity to achieve an effect similar to that of a natural feather shaft. It is worth noting that the artificial feather shaft 210 may be partially filled with foam material, for example, the handle 212 may be a hollow structure, and the feather joint 211 may be a solid structure filled with foam material.

[0027] In other embodiments, the artificial feather shaft 210 is a modified plastic hollow tube with a diameter that gradually decreases from thick to thin from the handle 212 to the feather joint 211. Preferably, the modified plastic hollow tube is partially or completely filled with foamed material. For example, the modified plastic tube has a hollow structure at the handle 212 and a solid structure at the feather joint 211. The modified plastic tube is injection molded from a mixture of short fibers and plastic raw materials. The short fibers can be shorted from various chemical fibers such as glass fiber, basalt fiber, aramid fiber, carbon fiber, silicon carbide fiber, polyester fiber, polypropylene fiber, acrylic fiber, or nylon fiber, or mixtures thereof. The plastic raw materials can be selected from polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC), or mixtures thereof. Therefore, the modified plastic hollow tube can also be partially or completely filled with foamed material, which will not be elaborated further here.

[0028] In other embodiments, the artificial feather shaft 210 is a modified plastic tube with a diameter that gradually tapers from the shank 212 to the feather attachment 211. This modified plastic tube has a solid structure and a material density that can reach 1.1-1.6 g / cm³. 3 This allows the artificial feather shaft 210 to have higher rigidity, thereby avoiding deformation of the shuttlecock caused by the impact. The high rigidity also allows the shuttlecock to quickly return to its original shape. The solid artificial feather shaft is preferably made of a modified material of nylon and glass fiber, but other materials are also possible.

[0029] In this embodiment, please refer to Figure 5 and Figure 6 As shown, the artificial feather shaft 210 is generally in the shape of a truncated pyramid; the cross-section of the artificial feather shaft 210 can be square, rectangular, trapezoidal, circular, polygonal, etc.; it is understood that the structure of the artificial feather shaft 210 can also be in the shape of a frustum or a multi-faceted pyramid, etc.; preferably, the end of the artificial feather shaft 210 located at the handle 212 is configured as a tip that facilitates the insertion of the handle 212 into the ball head 10, and the structure of this end can be conical, pyramidal, etc., depending on the shape of the artificial feather shaft 210.

[0030] In a preferred embodiment, the artificial feather shaft 210 exhibits a certain curvature outward along the direction from the shank 212 to the feather attachment 211; specifically, at least a portion of the upper surface 210a of the artificial feather shaft is arc-shaped; it may be that the shank and feather attachment are entirely arc-shaped to have a certain curvature, or it may be that only the feather attachment is arc-shaped to have a certain curvature; the curvature refers to the offset of the artificial feather shaft 210 along the plane containing the x-axis and z-axis; preferably, the absolute value of the curvature is less than 0.8 cm.

[0031] In some embodiments, the cross-section of the artificial feather shaft 210 is trapezoidal or rectangular, preferably trapezoidal, with a relatively small upper surface and a relatively large lower surface. The feathers (vanes) are glued using the lower surface or side surface, resulting in a large gluing surface that is easy to operate. Compared to a rectangular cross-section, the other side is smaller, which can effectively reduce weight and increase the rigidity of the feather shaft.

[0032] It is worth noting that, in the embodiments of this utility model, the feather 220 can be either artificial or natural feathers.

[0033] Please continue to refer to this. Figure 4 The overall shape of the feathers after trimming 220 includes, but is not limited to, the common shapes of badminton shuttlecock feathers, such as full circle, large square, medium square, small square, and hunchback.

[0034] Please also refer to Figures 1 to 27As shown, in this embodiment, the feather portion 220 is an artificial feather vane. The components constituting the feather portion 220 include: a plurality of barbs 221. The plurality of barbs 221 are preferably fixed to the artificial feather shaft 210 in a parallel manner. In some preferred embodiments, the plurality of barbs 221 are respectively bonded to the feather attachment portion 220 at a predetermined angle α with the artificial feather shaft 210, wherein the angle α ≤ 90°. In particular, this is to reduce the wind resistance of the artificial feather during flight and to make it more closely resemble natural feathers. Regarding the flight pattern of the feathers, the angle α between the barbs 221 and the artificial shaft 210 is 30°-60°. This angle α can be, for example, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable. More preferably, the angle α is 40°-50°. In this embodiment, the barbs 221 are filaments, and the material of the filaments is selected from polyamide fibers, polyolefin fibers, and acrylic fibers. The wire may be any one or a combination of at least two of the following: fiber and polyester fiber; the cross-section of the wire may be circular, rectangular, square, polygonal, etc.; for example, the cross-section of the wire may be circular, and the cross-sectional diameter of the wire may be 0.05mm-0.5mm, such as 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc., but is not limited to those listed. The numerical values, and other unlisted values ​​within this range, are also applicable; preferably, the cross-sectional diameter of the wire is 0.08mm-0.3mm, so that the feather 220 is lighter and has better overall aerodynamic performance during flight; in a preferred embodiment, the cross-section of the feather barb 221 gradually decreases along its extension direction, for example, the feather barb 211 is a type of frustum structure, including a first root connected to the feather connector 220, and the feather barb 211 of this type of frustum structure gradually tapers from the first root to the tip.

[0035] In this embodiment, the surface of the handle 212 is provided with a protrusion 230 to prevent the rope-like component connecting the feathers from sliding up and down. The protrusion 230 on the surface of the artificial feather shaft allows for physical restraint during the adhesive curing process after the rope-like component is wound, directly preventing displacement of the rope-like component along the shaft axis. This ensures the rope-like component remains in the preset winding position during the adhesive process, avoiding feather spacing deviations caused by pre-curing offset and guaranteeing feather fixation accuracy. Furthermore, considering the smooth surface characteristics of commonly used materials such as plastic and carbon fiber coverings on artificial feather shafts, the protrusion 230 significantly increases the contact friction with the rope-like component, compensating for the slippage of smooth surfaces. Compared to a smooth handle without the protrusion 230, the engagement between the rope-like component and the protrusion 230 greatly reduces the risk of slippage caused by impact forces and airflow tearing forces during use, thereby maintaining the long-term stability of the connection between the feathers and the shaft.

[0036] In a preferred embodiment of this utility model, the protrusion 230 includes two protrusions spaced apart along the length of the artificial feather shaft; the two protrusions form a physical limit on the rope-like component; preferably, the distance between the two protrusions is equal to the diameter of the rope-like component, thereby accurately limiting the up-and-down sliding of the rope-like component, especially suitable for artificial feather shafts with smooth surfaces, significantly improving the fixation stability.

[0037] In the badminton manufacturing industry, natural feathers have become the mainstream raw material due to their excellent strength and toughness, which can match the aerodynamic requirements of flight. Among them, goose feathers and duck feathers are the first choice for high-end and competitive shuttlecocks because of their stable fibers and strong impact resistance. However, the application of natural feathers has significant limitations: the cost is greatly affected by the breeding cycle, environment and disease, and goose and duck farming requires a lot of land and feed, resulting in a limited supply of raw materials and difficulty in meeting the needs of large-scale production. Badminton shuttlecocks have stringent requirements for feather size; the length error of each feather from the base to the tip must be ≤±0.1mm to ensure flight stability. However, due to individual differences, the size distribution of feathers from large-scale farmed geese and ducks varies greatly, resulting in a large amount of waste feathers during processing. For every 1,000 standard shuttlecocks produced, 30%-40% of the feathers are discarded due to substandard length or defects in the feather vanes. Furthermore, some feathers that are slightly worn after use or have excessive trimming allowance are not recycled, leading to resource waste. With the popularization of badminton, market demand has been rising year by year, but the supply of natural feathers is difficult to expand due to breeding efficiency and seasonal factors, highlighting the contradiction between "demand growth and resource waste".

[0038] To address the aforementioned issues, in a preferred embodiment of this utility model, the feathers 220 are made of natural feathers.

[0039] It is worth noting that the components constituting the natural feather also include: a plurality of barbs, wherein the barbs have twigs that are in the same plane as the barbs and have a different extension direction than the barbs, the twigs being equivalent to barbules growing on the side edges of the barbs; the barbs are fixed to the barb joint.

[0040] It should be noted that the natural feathers used in this feather section 220 can be usable feather vanes (feather sections) from waste feathers recycled after removing the feathers used for normal badminton shuttlecocks, and then re-screened and trimmed to obtain suitable feather sections; furthermore, refer to Figure 7 and Figure 8 As shown, the wider part of a feather can be divided into an area near the quill and an area away from the quill. These areas can be appropriately trimmed to obtain a vane that partially carries the outer skin of the quill and an independent vane in the area away from the quill. The different vanes can then be trimmed to form shapes such as full circle, large square, medium square, small square, and humped.

[0041] In practice, about 0.1 mm thick glue can be applied to both sides of the artificial feather shaft, and then the cut feathers can be glued to both sides of the feather shaft. After the glue has cured, the desired leaf shape can be cut out with a mold.

[0042] The following description, in conjunction with the accompanying drawings, illustrates the reuse of waste feathers in this invention.

[0043] Please refer to Figure 9 The waste feathers used are derived from the remaining waste feathers after the usable parts of natural feathers have been removed during the processing of badminton shuttlecocks. These waste feathers include those that are not up to standard in length, those with slightly damaged edges but intact centers, those with uneven barb distribution but no broken core areas, and feathers separated from discarded shuttlecocks after use. The waste feathers are first pre-treated to remove impurities and screen out raw materials with acceptable feather fiber integrity. Then, using the original feather shaft as the center, the feather is divided into two areas along the left and right directions: one near the shaft and one far from the shaft. These areas are then cut into feathers of various shapes, such as full circle, large square, medium square, small square, and hunchback, to fit the artificial feather shaft.

[0044] It should be noted that the feather vanes near the peduncle area may have peduncle attachments, such as "cortical fibers of the rachis" or "fragments of the medulla of the rachis".

[0045] Of course, the hair stalk attachment can also be artificially created; please refer to [reference needed]. Figure 7 and Figure 8For example, a connector can be set on the cut surface of the feather. This connector can increase the contact area between the feather and the artificial shaft, improve the structural stability when the two are fixed together, and effectively prevent the feather from falling off when hit by the ball. On the other hand, the connector can be prefabricated into a standardized form, which is convenient for batch production. It can also guide the adhesive to be evenly distributed on the bonding surface, reduce bonding deviation, simplify the operation steps, and make the overall processing process smoother and more efficient.

[0046] That is, the connector can be an attached hair or a component made of other materials to achieve the above functions.

[0047] During the process of fixing the feather to the artificial feather shaft, the surface of the feather joint of the artificial feather shaft can be pre-treated first (such as removing surface dirt, improving surface roughness, or activating the surface). Then, a suitable adhesive (such as modified epoxy resin) is applied to the feather joint. The cut feather is aligned and bonded to the feather joint. After pressing to remove air bubbles on the bonding surface, curing is performed. After curing, the bonding strength between the feather and the feather joint is tested to ensure that the peel strength and other indicators meet the usage requirements. Qualified components can then proceed to the subsequent badminton shuttlecock assembly process.

[0048] Please also refer to Figures 9 to 15 As shown, the feather attachment 211 has opposing first side surface 211a and second side surface 211b; The first side surface 211a is recessed inward to form one or more first recesses 2111 for inserting the feather barb 221; the second side surface 211b is recessed inward to form one or more second recesses 2112 for inserting the feather barb 221. In this embodiment, the first side surface 211a is recessed inward to form a continuous first recess 2111, as shown in the reference. Figures 12 to 14 The first recess 2111 starts at the junction of the shank 212 and the feather attachment 211 and ends at the extension end of the feather attachment 211. Several feathers 221 can be inserted and fixed in the first recess 2111. The second recess 2112 is located on the second side 211b and is symmetrically arranged with the first recess 211. Specifically, please refer to Figure 15 As shown, the first recess 2111 and the second recess 2112 can be configured to facilitate the joining of the feather 221, so as to facilitate the insertion and fixing of the feather 221. For example, a slot is provided in the recess so that the feather 221 can be directly inserted into and fixed therein. Or, the width of the recess is adapted to the cross-sectional width of the feather 221.

[0049] It is worth noting that, for the first recess 2111 and the second recess 2112 in this embodiment, the adhesive can be applied directly to the first recess 2111 and the second recess 2112, thereby inserting the feather barb 221 into these recesses so that the feather barb 221 is fixedly connected to the feather attachment 211, thereby improving the stability of the feather 220.

[0050] Of course, the above steps can also be to first fix the feather vane to the artificial feather shaft, and then cut the feather vane into shapes such as full circle, large square, medium square, small square, and hunchback, which will not be elaborated on here.

[0051] In another embodiment of this utility model, reference is made to Figure 13 and Figure 14 As shown, the upper surface of the artificial feather shaft includes at least one stepped surface that is not in the same plane, and the horizontal height of the upper surface 212a of the handle is higher than the horizontal height of the upper surface 211c of the feather joint.

[0052] Therefore, the feather 220 can be glued to the upper surface 211c of the feather attachment. The gluing can be done in the manner described above, which will not be elaborated on here.

[0053] In a preferred embodiment, the difference between the horizontal height of the upper surface 212a of the handle and the horizontal height of the upper surface 211c of the feather attachment 211 is h, and 0.02mm≤h≤0.5mm. The horizontal height difference h can specifically be 0.02mm, 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0054] In some embodiments, the difference between the horizontal height of the upper surface 212a of the handle and the horizontal height of the upper surface 211c of the feather attachment is h, and 0.02mm≤h<0.2mm.

[0055] In a preferred embodiment, the difference in horizontal height between the upper surface 212a of the handle and the upper surface 211c of the feather attachment is h, and 0.2mm ≤ h ≤ 0.5mm. Preferably, please also refer to... Figures 15 to 19As shown, a fixing plate 40 is provided on the side of the feather barb 221 near the feather connector 211, so that the feather barb 221 is sandwiched between the fixing plate 40 and the feather connector 211, thereby increasing the stability of the feather barb 221; preferably, the fixing plate 40 can be a carbon sheet, fiber, plastic, or a composite material composed of them, which has a light weight. Preferably, the thickness of the fixing plate is 0.05mm-0.5mm, and the thickness of the fixing plate 40 can be, for example, 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0. 4mm, 0.45mm, 0.5mm, etc., but not limited to the listed values; other unlisted values ​​within this range are also applicable. More preferably, the thickness of the fixing plate 40 is 0.05mm-0.3mm. The fixing plate 40 helps improve the flatness of the side surface, thereby reducing wind resistance and improving the stability of the badminton shuttlecock's flight. In a preferred embodiment, the cross-section of the fixing plate 40 gradually decreases along its extension direction. For example, more preferably, the fixing plate 40 can also be a flat structure with a cross-section that gradually decreases along its extension direction, thereby reducing wind resistance. In another embodiment, please also refer to... Figures 17 to 21 As shown, the fixing plate 40 can be an integral structure or a split structure. The split structure can be a left and right structure, in which the left fixing plate and the right fixing plate are fixed by gluing or other means so that the feather barbs 221 located on the left and right sides are sandwiched between the fixing plate 40 and the feather joint 211. This can further reduce the weight of the feathers 20 and ensure the overall stability of the structure.

[0056] In a preferred embodiment of this utility model, the feather barb 221 is fixedly connected to the feather attachment portion 211 by a connector 240. The connector 240 includes a connecting portion that contacts the artificial feather shaft and an extension portion formed by the connecting portion extending along the width direction of the artificial feather shaft; the feather barb 221 is fixedly connected to the extension portion.

[0057] In this embodiment, please refer to Figures 19 to 23 The connector is a plastic sheet, including a connecting part and an extension part. The connecting part is the central area of ​​the plastic sheet and is used to directly contact and glue with the feather joint of the artificial feather shaft 210. The extension part is formed by the connecting part extending to both sides along the width direction of the artificial feather shaft 210, constituting the two side areas of the plastic sheet. The feather barb (or the entire feather vane) is fixed to the outer side of the extension part.

[0058] In practice, the barbs are first glued to the outer surfaces of both sides of the extension section. After the glued structure between the barbs and the extension section has cured, the connecting part in the middle of the plastic sheet is then glued to the corresponding part of the artificial feather shaft. The two are then firmly connected by the adhesive, so that the barbs are indirectly fixed to the feather joint by means of the plastic sheet. At the same time, the extension structure of the extension section provides sufficient space for fixing the barbs.

[0059] Of course, those skilled in the art can adapt or change the order of the above steps.

[0060] In another embodiment of this utility model, reference is made to Figure 24 As shown, the connector can also be configured as two independent plastic sheets, and the specific methods of gluing and assembling it with the barb and artificial rachis include, but are not limited to, the following three: In the first assembly method, referring to the aforementioned embodiment, one plastic sheet is first taken, and the feather barbs are glued to the outer surfaces of both sides of the extension part. After the glued structure between the feather barbs and the extension part is cured, the connecting part in the middle of the plastic sheet is then glued to the corresponding feather joint of the artificial feather shaft, and a stable connection between the two is achieved by using adhesive. Then, another plastic sheet is taken and glued to the other side of the feather barb and the feather shaft, so that the two plastic sheets are arranged opposite each other, so as to finally form a structure in which the feather barb is held by the plastic sheets on both sides and fixed to the feather joint by the plastic sheets.

[0061] The second assembly method involves placing two plastic sheets opposite each other, then placing the artificial feather shaft's feather joint between the two plastic sheets, ensuring that the inner surfaces of the two plastic sheets are in contact with the two sides of the feather joint and then applying adhesive to cure. At this point, the two plastic sheets and the feather joint form an integral structure. Afterward, adhesive is injected into the gaps reserved between the outer surfaces of the two plastic sheets and the feather shafts, and the feather shafts are inserted into the corresponding gaps. Once the adhesive layer has cured, the feather shafts are fixed to the connectors and the feather joint.

[0062] The third assembly method involves placing two plastic sheets opposite each other, applying adhesive to the opposite extended surfaces of the two plastic sheets, attaching the two sides of the feather to the extended surfaces of the two plastic sheets and curing them, while reserving an installation space between the inner surfaces of the two plastic sheets that matches the size of the artificial feather shaft joint; after the adhesive layer between the feather and the plastic sheets has cured, insert the artificial feather shaft joint into the reserved installation space, fill the installation space with adhesive, and glue and fix the feather joint to the inner surfaces of the two plastic sheets, thereby achieving an indirect connection between the feather and the artificial feather shaft.

[0063] Based on the above, please refer to Figures 25 to 27 The present invention provides a badminton shuttlecock, comprising a shuttlecock head 10, a plurality of feathers 20 and at least one rope-like component 30; The feathers are the badminton feathers provided in the embodiments described above; The shanks of the plurality of feathers each have a first end and a second end opposite to each other, the first end being away from the feather joint; the first end of the plurality of feathers is inserted into the inner side of the ball head; The feathers are secured to each other by the rope-like component; Generally speaking, several feathers are arranged such that the distance between them increases as they move away from the head of the ball; that is, several feathers are arranged such that the inner diameter of the tube formed by the feathers increases as they move away from the head of the ball.

[0064] It is understood that there may be multiple rope-like components. For example, the badminton shuttlecock includes a first rope-like component that connects the plurality of feathers and is close to the shuttlecock head; and a second rope-like component that connects the plurality of feathers and is close to the feather portion.

[0065] Furthermore, since the rope-like components are used to fasten the feathers to the shaft, the material must meet the core requirements of wear resistance, tensile strength, and moderate flexibility. For example, nylon threads combine excellent wear resistance, tensile strength, and moderate elasticity, have good weather resistance, and are moderately priced, making them suitable for mass-market and mid-to-high-end badminton shuttlecocks. Polyester threads have higher strength and lower deformation rate, resulting in strong structural stability after binding, making them suitable for scenarios requiring high fixing precision. However, their flexibility is slightly inferior, often requiring adhesive bonding. Polyester threads are wear-resistant, anti-aging, and have a lower cost. Their smooth surface makes them less prone to snagging on feather fibers. Although their tensile strength is slightly weaker, they can meet the needs of economical badminton shuttlecocks. Moreover, composite fiber threads (such as nylon-polyester composite threads) combine the advantages of multiple materials, taking into account wear resistance, tensile strength, flexibility, and fatigue resistance. They are suitable for high-end badminton shuttlecocks or professional training shuttlecocks, reducing the risk of loosening at the binding point after long-term hitting.

[0066] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this utility model can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.

[0067] Although this document frequently uses terms such as head, artificial feather, artificial shaft, upper surface of shaft, lower surface of shaft, feather joint, first side, second side, upper surface of feather joint, shaft, upper surface of shaft, feather, barb, first recess, second recess, protrusion, connector, cord-like component, and fixing piece, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model. The terms "first," "second," etc. (if present) in the description, claims, and accompanying drawings of the embodiments of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A feather for badminton shuttlecocks, characterized in that, Including the feathered section; and An artificial feather shaft that supports the feathers, the artificial feather shaft having a feather joint and a shank connected to the feather joint; The components constituting the feather include: a plurality of barbs, each barb having a twig portion that is in the same plane as the barb and has a different extension direction from the barb; the barb is fixedly attached to the barb joint. The surface of the handle is provided with protrusions to prevent the rope-like component connecting the feathers from sliding up and down.

2. The badminton feather according to claim 1, characterized in that, The barbs are fixed to the barb joint by a connector.

3. The badminton feather according to claim 2, characterized in that, The connector includes a connecting portion that contacts the artificial feather shaft and an extension portion that extends along the width direction of the artificial feather shaft; the feather barb is fixed to the extension portion.

4. The badminton feather according to claim 2, characterized in that, The connector is a hair-like attachment.

5. The badminton feather according to claim 1, characterized in that, The artificial feather shaft is a hollow carbon fiber tube whose diameter gradually decreases from the shank to the feather joint.

6. The badminton feather according to claim 5, characterized in that, The hollow carbon fiber tube is partially or completely filled with foam material.

7. The badminton feather according to claim 5, characterized in that, The artificial feather shaft has a certain curvature as it extends outward from the shank towards the feather joint.

8. The badminton feather according to claim 7, characterized in that, The absolute value of the curvature is less than 0.8 cm.

9. The badminton feather according to claim 1, characterized in that, The cross-section of the artificial feather shaft is trapezoidal or rectangular.

10. The badminton feather according to claim 1, characterized in that, The protrusion includes two protrusions spaced apart along the length of the artificial feather shaft.

11. The badminton feather according to claim 10, characterized in that, The distance between the two protrusions is equal to the diameter of the rope-like component.

12. The badminton feather according to claim 1, characterized in that, The feather joint has a first side and a second side opposite to each other; The first side is recessed inward to form one or more first recesses for inserting the feathers; The second side is recessed inward to form one or more second recesses for inserting the feathers.

13. The badminton feather according to claim 1, characterized in that, The upper surface of the rachis includes at least one stepped surface that is not in the same plane, and the horizontal height of the upper surface of the shank is higher than the horizontal height of the upper surface of the feather joint.

14. A badminton shuttlecock, characterized in that, It includes a ball-shaped head, several feathers, and at least one rope-like component; The feathers are feathers for badminton shuttlecocks as described in any one of claims 1-13; The shanks of the plurality of feathers each have a first end and a second end opposite to each other, the first end being away from the feather joint; the first end of the plurality of feathers is inserted into the inner side of the ball head; The feathers are secured to each other by the rope-like component.

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