Composite material artificial feather for badminton

Abstract

The application provides a composite material artificial feather of a shuttlecock, which comprises a main shaft made of a first plastic injection material and a feather piece made of a second plastic injection material, wherein the density of the first plastic injection material is relatively greater than the density of the second plastic injection material; the feather piece is wrapped outside the main shaft, the front surface of the feather piece is provided with a plurality of grooves, and the back surface of the feather piece is a flat surface; the composite material artificial feather of the shuttlecock can be manufactured by using a wrapping injection or embedding injection technology, the main shaft made of the first plastic injection material can provide sufficient structural strength, and the feather piece made of the second plastic injection material can reduce the weight of the artificial feather.

Description

Technical Field

[0001] This application relates to the construction of badminton shuttlecocks, and in particular to composite material artificial feathers for badminton shuttlecocks. Background Technology

[0002] The structure of a badminton shuttlecock can be basically divided into two main parts: the "head" and the "feathers". The head is a cylinder with a semi-spherical front end, which is the part where the shuttlecock and the racket face come into contact. The racket face is a net surface made of special strings crisscrossed. The feathers are evenly inserted at the end of the head and neatly arranged in a cone-shaped structure. The current standard for badminton shuttlecocks is to use 16 feathers.

[0003] Based on the materials used in their manufacture, badminton shuttlecocks can be broadly categorized into two types: natural and synthetic. Shuttlecocks made from natural materials are generally more expensive than those made from synthetic materials. Therefore, shuttlecocks made from natural feathers are mostly used in competitions, while those made from synthetic materials are often used as practice shuttlecocks for beginners.

[0004] Natural feathers are typically made from goose or duck feathers, and their cost is high due to the difficulty in collecting, preparing, and processing them. During matches, even slight wear and tear on the shuttlecock's feathers can affect its trajectory, necessitating immediate replacement. This results in a consistently high consumption of shuttlecocks during intense matches.

[0005] In the approved Taiwanese invention patent (certificate number TW I713740) entitled "Artificial Feathers for Badminton and Badminton Shuttlecock," the feathers of the proposed artificial feathers can be constructed using materials such as nonwoven fabric or resin. When using nonwoven fabric, a reinforcing film is formed on the surface to prevent the fibers of the nonwoven fabric from unraveling during impact. This reinforcing film can be formed by coating with resin.

[0006] The approved Taiwanese invention patent (certificate number TW I636815) for "Badminton Shuttlecock and its Shaft" describes a shuttlecock comprising multiple feathers, a head, and multiple shafts. Each shaft includes: a shaft body with a feather end and a head end, made of plastic material, with one of the feathers attached to the feather end. The shaft body further includes: a hollow tube with an upper and lower surface; a receiving channel located within the hollow tube; a pair of side wings connected to opposite sides of the hollow tube, the side wings being sheet-like structures that securely attach the feathers to them; and a foam material filling the receiving channel. Filling the shaft body with foam material mimics the porous structure of natural feathers, resulting in a lightweight and low-density shaft while maintaining impact resistance and toughness. Utility Model Content

[0007] The technical problem to be solved by this application is to provide a composite material artificial feather for badminton shuttlecocks, which has the advantages of rapid production, strong and tough structure and reduced consumption of natural resources.

[0008] To solve the above-mentioned technical problems, a preferred embodiment of the composite material artificial feather of the badminton shuttlecock of this application includes: a main shaft and a feather vane. The main shaft includes a feather shaft and a feather root connected coaxially. The main shaft is made of a first plastic injection material, and the feather vane is made of a second plastic injection material. The density of the first plastic injection material is relatively greater than that of the second plastic injection material. The feather vane covers the outside of the feather shaft. The front of the feather vane has multiple grooves, and the back of the feather vane is a flat surface. The grooves extend from the axis of the main shaft in a direction away from the main shaft.

[0009] Preferably, the first plastic injection material is a mixture comprising plastic injection material and RF lignocellulose.

[0010] Preferably, the first plastic injection material is selected from the group consisting of: polypropylene (PP), polyethylene (PE), a mixture of polypropylene (PP) and RF lignocellulose, and a mixture of nylon and RF lignocellulose.

[0011] Preferably, the mixture of polypropylene (PP) and RF lignocellulose, and the mixture of nylon and RF lignocellulose, wherein the RF lignocellulose accounts for 30-40 wt% of the mixture.

[0012] Preferably, the second plastic injection material is selected from the group consisting of polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), expanded polyethylene (EPE), and polyurethane (PU).

[0013] Preferably, the feathers are made using a second plastic injection material and manufactured using microcellular injection molding (MuCell) technology.

[0014] Preferably, the cross-sectional shape of the main shaft is I-shaped.

[0015] Preferably, the width of the main shaft gradually narrows from the feather root to the shaft, and the thickness of the main shaft gradually thins from the feather root to the shaft.

[0016] Preferably, the two ends of the main shaft are slightly upturned towards the back side to form a warped arc shape, and the main shaft is slightly bent in the axial direction to form an arc shape.

[0017] Preferably, the feather includes a first feather and a second feather, the first feather and the second feather being disposed on the left and right sides of the rachis, respectively.

[0018] Preferably, the thickness of the first and second vanes gradually decreases from the rachis towards the direction away from the rachis.

[0019] Preferably, the rachis has multiple transverse grooves that are evenly distributed at different positions along the axial direction of the rachis. These transverse grooves traverse the rachis, and the feather vanes completely cover these transverse grooves while covering the rachis.

[0020] The advantages and benefits of this application are that the composite material artificial feathers of the badminton shuttlecock can be manufactured using over-molding or insert molding technology. The spindle made of the first plastic injection material can provide sufficient structural strength, and the feather vane made of the second plastic injection material can reduce the weight of the artificial feathers.

[0021] The other effects and embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of a preferred embodiment of the composite material artificial feathers for badminton shuttlecocks of this application; Figure 2 yes Figure 1 Front view of an embodiment; Figure 3 yes Figure 1 Rear view of an embodiment; Figure 4 yes Figure 1 Side view of an embodiment; Figure 5A yes Figure 2 The main shaft has a cross-sectional structure at position AA; Figure 5B yes Figure 2 The main shaft has a cross-sectional structure at position BB; Figure 5C yes Figure 2 The main shaft has a cross-sectional structure at position CC; Figure 5D yes Figure 2 The cross-sectional structure of the main shaft at position DD; Figure 5E yes Figure 2 The main shaft is constructed in the cross-section of position EE; Figure 6 yes Figure 2 The cross-sectional structure of the spindle at position FF illustrates another preferred embodiment of the feather shaft construction.

[0024] Symbol Explanation

[0025] 10: Main spindle 11: Feather shaft

[0026] 12: Feather root 20: Cross-cut groove

[0027] 30: Vane 301: First Vane

[0028] 302: Second barb; 31: Front view

[0029] 311: Grooves 32: Back

[0030] T1: Thickness T2: Thickness

[0031] W1: Width Detailed Implementation

[0032] In the embodiments described below, the positional relationships include: up, down, left, and right. Unless otherwise specified, they are all based on the direction shown by the components in the diagram.

[0033] Please refer to the following first. Figures 1 to 4 This document presents a structural diagram, front view, side view, and rear view of a preferred embodiment of the composite material artificial feathers for badminton shuttlecocks according to this application. The preferred embodiment of the composite material artificial feathers for badminton shuttlecocks according to this application includes: a main shaft 10 and a feather vane 30 (comprising a first feather vane 301 and a second feather vane 302); wherein the main shaft 10 is made of a first plastic injection molding material, and the feather vane 30 is made of a second plastic injection molding material, wherein the density of the first plastic injection molding material is relatively greater than the density of the second plastic injection molding material. The feather vane 30 covers the outside of the main shaft 10, and the front surface 31 of the feather vane 30 has multiple grooves 311, while the back surface 32 of the feather vane 30 is a flat surface, wherein the grooves 311 extend from the axis of the main shaft 10 in a direction away from the main shaft 10.

[0034] In a preferred embodiment of this application, the first plastic injection material is a mixture comprising a plastic injection material and a reinforcing material (e.g., RF lignocellulose); preferably, the first plastic injection material is selected from the group consisting of polypropylene (PP), polyethylene (PE), a mixture of polypropylene (PP) and RF lignocellulose, and a mixture of nylon and RF lignocellulose. In a preferred embodiment, the mixture of polypropylene (PP) and RF lignocellulose, and the mixture of nylon and RF lignocellulose, wherein the RF lignocellulose accounts for 30-40 wt% of the mixture.

[0035] In a preferred embodiment of this application, the second plastic injection material is selected from the group consisting of polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), expanded polyethylene (EPE), and polyurethane (PU).

[0036] In a preferred embodiment of this application, the composite artificial feathers of the badminton shuttlecock are manufactured using over-molding technology. Over-molding technology, also known as two-shot molding or multiple material molding, is an injection manufacturing process that combines two different plastic materials to produce a single part or product. In another preferred embodiment of this application, the composite artificial feathers of the badminton shuttlecock can also be manufactured using insert molding technology.

[0037] For example, the main shaft 10 can be made using a first plastic injection material, then the main shaft 10 can be moved to another mold, and a second plastic injection material can be injected to complete the molding of the feather 30. At the same time, the feather 30 can be used to cover the main shaft 10, thereby producing the composite artificial feather of the badminton shuttlecock of this application.

[0038] As a preferred embodiment of this application, microcellular injection molding (MuCell) technology is used to form a feather 30 from a second plastic injection material. By controlling the density of the microbubbles, its elasticity, density, and weight can be adjusted to give it the toughness and elasticity required for badminton feathers and to meet the weight standards for badminton shuttlecocks.

[0039] The composite artificial feathers of the badminton shuttlecock in this application are manufactured using encapsulation injection and embedding injection technologies. The spindle, made of a first plastic injection material, provides sufficient structural strength, while the vane, made of a second plastic injection material, reduces the weight of the artificial feathers.

[0040] Please see Figures 5A to 5E The diagram illustrates a cross-sectional structure of a preferred embodiment of the main shaft 10, which includes a rachis 11 and a feather root 12 coaxially connected as a single unit. In a preferred embodiment, the cross-sectional shape of the main shaft 10 is I-shaped, providing better structural strength. In a preferred embodiment, the width W1 of the main shaft 10 gradually narrows from the feather root 12 towards the rachis 11, and the thickness T1 of the main shaft 10 gradually thins from the feather root 12 towards the rachis 11. In a preferred embodiment, the two ends of the main shaft 10 are slightly curved towards the back surface 32, forming a warped arc shape. In a preferred embodiment, viewed from the front and back views of the composite material artificial feathers of the badminton shuttlecock of this application, the main shaft 10 is slightly curved in an arc shape.

[0041] A preferred embodiment of the feather vane 30 includes a first feather vane 301 and a second feather vane 302 respectively disposed on the left and right sides of the rachis 11. The structures of the first feather vane 301 and the second feather vane 302 are symmetrical; generally, the projected shapes of the first feather vane 301 and the second feather vane 302 on the same plane are asymmetrical. In a preferred embodiment, the thickness T2 of the first feather vane 301 and the second feather vane 302 gradually decreases from the rachis 11 toward the direction away from the rachis 11 (see...). Figure 5D ).

[0042] Please see Figure 6 The diagram illustrates a preferred embodiment of the feather shaft 10, wherein the feather shaft 11 has a plurality of transverse grooves 20, which are evenly distributed at different positions along the axial direction of the feather shaft 11. The transverse grooves 20 traverse the feather shaft 11. The feather vanes 30 cover the feather shaft 11 of the main shaft 10 and also completely cover the transverse grooves 20. Therefore, the first feather vane 301 and the second feather vane 302 can be better and more firmly bonded to the feather shaft 11 of the main shaft 10.

[0043] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of this application, and are not intended to limit the implementation methods of the technology of this application in any way. Any person skilled in the art may make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in this application, but these should still be regarded as the technology or embodiments that are substantially the same as those of this application.

Claims

1. A composite material artificial feather for badminton shuttlecocks, characterized in that, The composite artificial feather of the badminton shuttlecock includes: a spindle and a vane. The spindle comprises a shaft and a root connected coaxially. The spindle is made of a first plastic injection material, and the vane is made of a second plastic injection material. The density of the first plastic injection material is relatively greater than that of the second plastic injection material. The vane covers the outside of the shaft. The front of the vane has multiple grooves, and the back of the vane is a flat surface. The grooves extend from the axis of the spindle in a direction away from the spindle.

2. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The first plastic injection material is a mixture comprising plastic injection material and RF lignocellulose.

3. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The first plastic injection material is selected from the group consisting of: polypropylene, polyethylene, a mixture of polypropylene and RF lignocellulose, and a mixture of nylon and RF lignocellulose.

4. The composite material artificial feathers for a badminton shuttlecock according to claim 3, characterized in that, The mixture of polypropylene and RF lignocellulose, and the mixture of nylon and RF lignocellulose, wherein the RF lignocellulose accounts for 30 to 40 wt% of the mixture.

5. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The second plastic injection material is selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer, foamed polyethylene, and polyurethane.

6. The composite material artificial feathers for a badminton shuttlecock according to claim 5, characterized in that, The feather was manufactured using the second plastic injection material and micro-foaming injection molding technology.

7. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The cross-sectional shape of the main shaft is I-shaped.

8. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The width of the spindle gradually narrows from the feather root to the spindle, and the thickness of the spindle gradually thins from the feather root to the spindle.

9. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The two ends of the main shaft are slightly curved towards the back side to form a warped arc shape, and the main shaft is slightly bent in the axial direction to form an arc shape.

10. The composite material artificial feathers for a badminton shuttlecock according to claim 1, characterized in that, The feather includes a first feather and a second feather, which are respectively disposed on the left and right sides of the rachis.

11. The composite material artificial feathers for a badminton shuttlecock according to claim 10, characterized in that, The thickness of the first and second vanes gradually decreases from the rachis towards the direction away from the rachis.

12. The composite material artificial feathers for a badminton shuttlecock according to claim 10, characterized in that, The feather shaft has multiple transverse grooves that are evenly distributed at different positions along the axial direction of the feather shaft and that traverse the feather.

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