Shuttlecock and manufacturing method thereof

Abstract

The invention provides a shuttlecock and a manufacturing method thereof, and relates to the technical field of sports equipment. The method comprises the following steps: providing a prefabricated trumpet-shaped ball skirt or a ball skirt body; placing the lower end part of the ball skirt or the ball skirt body in an accommodating cavity of a ball head outer shell; an inner core body is pressed into the containing cavity, so that the inner core body is matched with the outer shell, and the lower end part of the ball skirt or the ball skirt body is clamped, bonded and fixed between the inner core body and the outer shell. The invention further provides the badminton, the badminton head is of a split structure and comprises an outer shell and an inner core, a containing cavity is formed in the outer shell, and the lower end of the badminton skirt is clamped and fixed between the outer shell and the inner core in an adhesive mode. The badminton manufacturing process aims at solving the problems that an existing badminton manufacturing process is complex, low in efficiency, infirm in connection and the like, and has the beneficial effects of simplifying the process, improving the efficiency and the product quality and enhancing the connection reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sports equipment, in particular to a split-type shuttlecock and a manufacturing method thereof. BACKGROUND

[0002] Shuttlecock is a popular sports equipment. The existing shuttlecock manufacturing process mainly has the following problems: the traditional natural feather or artificial feather shuttlecock manufacturing process usually includes the steps of drilling a hole on the head, implanting a single feather into the hole one by one, and weaving and fixing the feathers into a skirt through hooking and rolling glue. This process flow is complex, including multiple independent processes such as feather implantation, hooking, and rolling glue, which not only has low production efficiency and long production cycle, but also accumulates errors in each process, resulting in poor consistency and low yield of the final product, which requires a large amount of manual correction of the skirt, significantly increasing the production cost.

[0003] Another type of plastic shuttlecock integrally injection molded, the skirt is usually fixed by the lower connecting ring and the annular groove on the head with glue or clamping. However, in order to control the overall weight, this connecting structure often lacks rigidity and strength, causing the skirt to deform excessively during high-speed flight, affecting the flight performance, and even causing the skirt to fall off the head as a whole during use.

[0004] In addition, some technical solutions also propose to design the head as a complex structure composed of an external head piece and an internal embedded piece, which clamps the base of the skirt. However, this type of solution relies on complex mechanical interlocking structures such as clamping grooves and clamping edges to achieve fixation, which not only requires high machining precision of the mold and parts, increasing the manufacturing cost, but also may not provide uniform and reliable clamping force during assembly, affecting the stability and concentricity of the connection. Therefore, there is an urgent need in the art for a new shuttlecock structure and manufacturing method to simplify the production process, improve production efficiency and product consistency, and ensure the reliability and stability of the connection between the skirt and the head. SUMMARY

[0005] The present application aims to solve the problems of complex process flow, low efficiency, poor product consistency, high labor cost of the existing shuttlecock manufacturing process, and the problems of insufficient rigidity, low strength, or complex structure of the existing skirt and head connection method, and to provide a shuttlecock with simple structure, reliable connection, simplified process, high production efficiency, and high product quality, as well as a manufacturing method thereof.

[0006] To achieve the above-mentioned purpose, the present application provides a shuttlecock, comprising a skirt and a head;

[0007] The head comprises an outer shell and an inner core, and the outer shell is provided with a receiving cavity for accommodating the lower end of the skirt; the inner core is matched with the receiving cavity of the outer shell;

[0008] The ball skirt comprises a ball skirt body and a support part; the support part is distributed on the ball skirt body and plays a structural support role;

[0009] The lower end of the ball skirt is clamped and adhesively fixed between the outer shell and the inner core.

[0010] In a possible implementation, the accommodating cavity is a frustum-shaped hole, and the inner core is a frustum-shaped plug matched with the frustum-shaped hole; the lower end of the ball skirt is clamped and adhesively fixed between the outer shell and the inner core through the frustum hole.

[0011] In a possible implementation, the outer shell is a ball head seat, and the inner core is a ball head plug.

[0012] In a possible implementation, the ball skirt body is composed of a plurality of feathers or an integrally formed ball skirt body.

[0013] In a possible implementation, the feather comprises a feather leaf and a feather stem.

[0014] In a possible implementation, the ball skirt body is composed of a plurality of natural feathers or artificial feathers.

[0015] In a possible implementation, the support part comprises at least one support ring and / or a group of support rods.

[0016] The support rod is provided with a plug hole or a plug slot for inserting the natural feather or the artificial feather;

[0017] The support ring is distributed on the feather stem or the support rod; the support ring is used for connecting the plurality of natural feathers or artificial feathers into a frustum shape.

[0018] In a possible implementation, the natural feather or the artificial feather passes through the plug hole or the plug slot of the support rod, and the lower end of the natural feather or the artificial feather is clamped and fixed between the outer shell and the inner core.

[0019] In a possible implementation, the support part comprises a first support ring, a second support ring and / or a third support ring; the first support ring and the second support ring are distributed on the ball skirt body; the third support ring is connected with the lower end of the ball skirt body and is clamped and adhesively fixed between the outer shell and the inner core.

[0020] In a possible implementation, the ball skirt is a component integrally formed by a high polymer foaming material, and the lower part of the ball skirt is integrally formed with a frustum ring clamped between the outer shell and the inner core.

[0021] The application also provides a manufacturing method of the shuttlecock.

[0022] Preform a trumpet-shaped skirt body or skirt of the shuttlecock;

[0023] Place the skirt body or lower end of the skirt of the shuttlecock into a receiving cavity of an outer shell body used to form part of the head of the shuttlecock;

[0024] Press the inner core body into the receiving cavity, and clamp and adhesively fix the lower end of the skirt body or skirt of the shuttlecock between the outer shell body and the inner core body through cooperation of the inner core body and the outer shell body, to form the head of the shuttlecock.

[0025] Compared with the prior art, the application has the following beneficial effects: first, the shuttlecock of the application includes a split skirt and a split head, so that the mode of "preformed skirt + split head clamping and fixing" can be adopted, the processes of traditional technology such as feather planting, thread hooking and glue rolling, which are time-consuming and prone to problems, are completely cancelled, the complex serial processes are changed into simple parallel assembly, the production cycle is greatly shortened, and the production efficiency is significantly improved. Secondly, since the skirt can be integrally formed in advance, the cumulative errors caused by punching and feather planting angle in the traditional single feather planting process are avoided, through the mold clamping and fixing mode, the high consistency and connection strength of each product are ensured, the yield is high, and a large amount of manual post-correction is not required, thereby reducing the production cost. In addition, the clamping structure of the split head provided by the application, especially the preferred taper surface cooperation structure, can provide strong and uniform clamping force, ensure the rigidity and strength of the connection between the skirt and the head, effectively improve the flight stability and durability of the shuttlecock, and avoid the problems of loose or falling of the skirt. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other features, advantages and aspects of embodiments of the application will become more apparent by referring to the following detailed description, taken in conjunction with the accompanying drawings in which: the drawings are intended to better understand the present application, and do not constitute a limitation thereof. In the drawings, the same or similar reference signs represent the same or similar elements, wherein:

[0027] Figure 1 is a schematic diagram of the overall structure of the shuttlecock according to an embodiment of the application;

[0028] Figure 2 is an exploded view of the head structure of the shuttlecock according to an embodiment of the application;

[0029] Figure 3 is a front view of an artificial feather according to an embodiment of the application;

[0030] Figure 4A cross-sectional view of the combination of the ball head and the lower part of the skirt of the shuttlecock according to the embodiment of the present application;

[0031] Figure 5 A schematic view of the artificial feather of the skirt of the shuttlecock according to the embodiment of the present application with the support part with a through-hole support rod;

[0032] Figure 6 A schematic view of the combination of the lower part of the skirt and the ball head of the shuttlecock according to the embodiment of the present application with the support part with a through-hole support rod;

[0033] Figure 7 A schematic view of the combination of the lower part of the skirt and the ball head of the shuttlecock according to the embodiment of the present application with the support part with a blind-hole support rod;

[0034] Figure 8 A schematic view of the lower part of the skirt structure of the shuttlecock according to the embodiment of the present application with the support part with a blind-hole support rod;

[0035] Figure 9 A flow chart of the manufacturing method of the shuttlecock according to the embodiment of the present application.

[0036] In the drawings, the same or similar reference signs indicate the same or similar elements.

[0037] In the drawings, the meanings of the respective reference signs and symbols are as follows:

[0038] 1 - ball head; 1.1 - ball head seat; 1.2 - ball head plug; 2 - skirt; 3 - feather; 3.1 - feather shaft; 3.2 - feather vane; 4 - support part; 4.1 - upper support ring; 4.2 - middle support ring; 4.3 - lower support ring; 4.4 - support rod.

[0039] A - conical ring hole on the ball head seat DETAILED DESCRIPTION

[0040] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0041] Embodiment 1

[0042] The present embodiment provides a shuttlecock with a split ball head and a manufacturing method thereof. Referring to Figure 1 , the figure is a schematic view of the overall appearance of the shuttlecock manufactured according to the embodiment of the present application, which mainly includes a ball head 1 and a skirt 2 fixed on the ball head 1.

[0043] The structure of the shuttlecock will be described below with reference to Figures 1 to 4 . Among them, Figure 2Fig. 1 is a schematic diagram of the exploded structure of the shuttlecock, Figure 3 Fig. 3 is a schematic diagram of the cross-section of the ball head seat and the ball head plug, and Figure 4 Fig. 4 is a schematic diagram of the cross-section of the assembled ball head. In the present embodiment, the ball head 1 is of a split structure, which includes a ball head seat 1.1 and a ball head plug 1.2. It can be understood that the ball head seat 1.1 constitutes the outer shell of the ball head, while the ball head plug 1.2 constitutes the inner core of the ball head.

[0044] The overall shape of the ball head seat 1.1 can be similar to that of a conventional shuttlecock head, which has a lower part in the shape of a hemisphere for hitting the shuttlecock and an upper part in the shape of a cylindrical base. It is to be noted that the cylindrical base of the ball head seat 1.1 has a central cavity for accommodating components. Specifically, the cavity is a frustum-shaped hole A with a larger upper opening diameter than a lower opening diameter. The taper (i.e. half of the taper angle) of the frustum-shaped hole A is precisely designed, for example, in the range of 20 to 25 degrees, and in the present embodiment, it is specifically 22 degrees.

[0045] Correspondingly, the ball head plug 1.2 is a solid frustum-shaped plug, which has a shape, size and taper matching those of the frustum-shaped hole A. In other words, the outer surface of the ball head plug 1.2 is formed as a tapered surface matching the inner wall of the frustum-shaped hole A. The material of the ball head plug 1.2 can include, but is not limited to, foamed plastic (such as foamed polyethylene, polypropylene, polycarbonate, nylon, etc.) and composite materials of the above-mentioned high molecular materials and cork crumbs, etc., to ensure that it can withstand sufficient pressure during the pressing process without permanent deformation and can transmit effective clamping force.

[0046] The ball skirt 2 includes a ball skirt body 3 and support portions 4. The support portions 4 are distributed on the ball skirt body 3 and serve as supports. The ball skirt body 3 is composed of a plurality of feathers or an integrally formed ball skirt body. The support portions 4 include at least one support ring and / or a set of support rods 4.4. The support rods 4.4 are provided with insertion holes or slots for inserting natural feathers or artificial feathers. The support rings (4.1, 4.2, 4.3) are distributed on the support rods 4.4. The support rings serve to connect the plurality of natural feathers or artificial feathers into a frustum shape.

[0047] In the present embodiment, the ball skirt 2 is composed of a plurality of artificial feathers. Referring to Figure 3 and Figure 5, which is a structural diagram of a single artificial feather. As shown in the figure, each artificial feather includes a feather stem 3.1 as a skeleton and a feather leaf 3.2 integrally formed or fixed on both sides of the feather stem 3.1. The shape, thickness and flexibility of the feather leaf 3.2 are aerodynamically optimized to simulate the flight characteristics of natural feathers. In this embodiment, the skirt 2 can be specifically composed of 16 artificial feathers, and the total length of each feather can be 76 mm to meet the size requirements of standard shuttlecocks.

[0048] The present embodiment also provides a manufacturing method of a shuttlecock, the flow of which can refer to Figure 9 The method comprises the following steps:

[0049] S10: Preparing a horn-shaped skirt body or skirt. Unlike the traditional process of implanting a single feather into the ball head, this step first assembles all the feathers that make up the skirt into a complete and independent horn-shaped component. Specifically, the lower ends of the feather stems 3.1 of 16 artificial feathers can be gathered and positioned using a special tool clamp. The tool clamp has 16 positioning grooves inside, and the distribution angle and inclination angle are accurately calculated to ensure that the feathers can naturally form a standard horn-shaped skirt with an opening diameter, deflection angle and overall shape that meet the design requirements after being inserted. In this way, it can be ensured that the shapes of all pre-prepared skirts have high consistency, thereby avoiding the cumulative errors caused by human operation and equipment precision in the traditional single-implantation process.

[0050] S20: Placing the skirt, placing the lower end of the skirt body or skirt in the receiving cavity of the outer shell, which is used to form part of the ball head of the shuttlecock. As a preferred fixing method, to further enhance the reliability and durability of the connection, an adhesive can be applied before assembly. Specifically, an automatic dispensing equipment or manual method can be used to uniformly coat a layer of high-strength structural adhesive, such as hot melt adhesive, epoxy resin adhesive, acrylate adhesive or polyurethane adhesive, on the inner wall of the conical hole A of the ball head seat 1.1. The thickness of the adhesive layer can be controlled to the "filament" level to ensure that it can completely fill the microscopic gaps between the mating surfaces, and at the same time, it will not affect the final ball head weight and fitting accuracy due to excessive amount of adhesive. Then, the lower end of the horn-shaped skirt prepared in step S10, i.e. the gathered feather stem bundle, is placed into the conical hole A coated with adhesive from the top.

[0051] S30: compression fixation, the inner core body is pressed into the accommodating cavity, and the lower end of the ball skirt is clamped and fixed between the outer shell body and the inner core body through cooperation of the inner core body and the outer shell body, to form the ball head. The ball head plug 1.2 matched with the frustoconical hole A is aligned with the orifice, and a pressure device such as a pneumatic press, a hydraulic press or a servo press is used to apply a stable and controlled axial pressure to the ball head plug 1.2, so that the ball head plug 1.2 is uniformly pressed into the frustoconical hole A. During the pressing process, since the outer taper surface of the ball head plug 1.2 and the inner taper surface of the frustoconical hole A have the same taper, the two gradually fit, thereby continuously increasing the radial extrusion force on the feather stem bundle of the ball skirt 2 located therebetween. It can be understood that the taper fitting structure not only can realize automatic centering to ensure the concentricity of the ball skirt and the ball head, but also can efficiently convert the axial pressing force into a strong and uniformly distributed radial clamping force. The radial clamping force acts on each feather stem, and the feather stem is firmly pressed against the inner wall of the frustoconical hole A. At the same time, the previously coated adhesive fills all the tiny gaps under the action of extrusion, and forms a chemical bond after solidification, thereby realizing the dual fixation of physical clamping and chemical bonding. The pressure device can preset the final pressure value or the pressing depth as the stopping condition, to ensure that the clamping force of each finished badminton has high consistency.

[0052] After the adhesive is completely cured, the manufacturing of a badminton with a strong structure and stable performance is completed. The final assembled state is shown in the cross-sectional view Figure 4 As shown, the lower end of the ball skirt 2 is tightly clamped and fixed in the frustoconical gap formed between the ball head seat 1.1 and the ball head plug 1.2.

[0053] Compared with the prior art, the structure and method provided by the embodiment do not need to perform the processes such as ball head drilling, single-planting, inter-feather stem hooking and roll-gluing shaping in the traditional process. The production process can be simplified into two modules of “preparing the ball skirt” and “compression assembly”, which is suitable for realizing automatic production, so as to improve the production efficiency, the product consistency and the yield, and reduce the dependence on skilled workers and the corresponding production cost.

[0054] Embodiment 2

[0055] This embodiment is used to illustrate that the technical solution of the present application is also applicable to the manufacturing of a badminton using natural feathers. In this embodiment, the ball head 1 structure of the badminton is the same as that described in embodiment 1, that is, also using a split-type clamping structure composed of a ball head seat 1.1 and a frustoconical ball head plug 1.2. The materials, shapes and design of the frustoconical hole A are consistent with those described in embodiment 1.

[0056] The main difference between this embodiment and embodiment 1 is the composition and preparation method of the ball skirt 2. The ball skirt 2 is composed of 16 natural feathers (for example, first-class or second-class goose feathers or duck feathers) that are selected and trimmed.

[0057] Accordingly, the step S10 (preparing the skirt) in the manufacturing method is also adapted to the natural feather. Specifically, the step can adopt the traditional hooking process to pre-connect the feathers into a whole. In operation, 16 natural feathers can be arranged on a special hooking tool in a left or right insertion manner at a specific interval and angle; then, high-strength nylon or cotton thread is used as a supporting ring to be inserted and woven at specific height positions (e.g., upper and lower two rows) of the feather shaft; finally, the 16 independent feathers are firmly woven and connected into a structurally stable and regularly shaped skirt by tightening the supporting ring. The thus-prepared natural feather skirt can be transported and stored as an independent semi-finished product.

[0058] After the preparation of the skirt, the subsequent assembly steps are basically the same as those in Embodiment 1. That is, in step S20 (placing the skirt), a thin and uniform layer of adhesive is applied to the inner wall of the conical hole A of the ball head seat 1.1, and then the bundle of feather shafts of the prepared natural feather skirt is placed into the conical hole A as a whole. Then, in step S30 (pressing and fixing), the ball head plug 1.2 is pressed into the conical hole A using a pressing device. During the pressing process, the conical surface of the ball head plug 1.2 and the ball head seat 1.1 also generates strong and uniform radial clamping force on the bundle of feather shafts of the natural feather. It can be understood that, since the skirt has been pre-woven and shaped by the supporting ring and has good overall rigidity, it is not easy to deform disorderly when subjected to clamping force, which helps to ensure the regular shape of the final product skirt. The filling and curing of the adhesive further locks the positions of all the feather shafts, ensuring long-term reliability of the connection.

[0059] As can be seen from this embodiment, the core manufacturing concept of "preparing the skirt first and then clamping and fixing the whole" proposed in the present application has wide applicability. When applied to the manufacture of natural feather shuttlecock, although the "hooking" process is retained to ensure the shape of the skirt, the original process steps of "drilling holes on the ball head" and "single-planting" are replaced by the "overall pressing" step of the present application. This way can also simplify the overall process flow, improve production efficiency and product concentricity and other quality indicators, while retaining the excellent flight performance of natural feathers, and has reference value for the technical upgrading and transformation of existing natural feather shuttlecock production lines.

[0060] Embodiment 3

[0061] This embodiment provides a more integrated shuttlecock and its manufacturing method. In this embodiment, the ball head 1 still adopts a split conical clamping structure composed of a ball head seat 1.1 and a ball head plug 1.2. The improvement of the technical scheme is mainly in the structural design of the skirt 2.

[0062] Reference Figure 6This figure shows a partial structural diagram of a ball skirt with an integral support portion used in this embodiment. In this embodiment, the ball skirt 2 comprises multiple artificial feathers and an integral support portion. This integral support portion is a plastic component pre-molded integrally via an injection molding process. Its material is typically a modified plastic with excellent rigidity and toughness, such as glass fiber reinforced nylon.

[0063] like Figure 6 As shown, the integral support structure may include at least two support rings staggered in height, such as an upper support ring 4.1 with a smaller diameter and a middle support ring 4.2 with a larger diameter. Sixteen (or other number corresponding to the number of feathers) support rods 4.4, evenly distributed along the circumference, are integrally connected between the support rings. Together with the support rings 4.1 and 4.2, these support rods 4.4 form a stable, frustum-shaped frame structure resembling a birdcage. Each support rod 4.4 is provided with a structure for connecting to an artificial feather. For example, a hole (blind hole or through hole) or a single-sided slot for inserting a feather rod 3.1 may be provided at the top or side of each support rod 4.4.

[0064] Accordingly, the first step of the manufacturing method in this embodiment (step S10, prefabricating the ball skirt) also demonstrates a high degree of integration. This step specifically includes: first, injection molding the aforementioned integral support portion; then, selecting artificial feathers with short shafts (e.g., the shafts 3.1 are only 10-20 mm long) with an adapted length, inserting each of these shafts 3.1 into the receptacles or slots on the support rods 4.4 of the integral support portion, and securing them by pre-injecting glue into the receptacles or subsequently performing ultrasonic welding. This results in a highly integrated ball skirt assembly consisting of a plastic frame and artificial feathers. The lower edge of the ball skirt assembly, i.e., the lowermost support ring or the end of the support rod, is designed in a conical ring shape, with an outer diameter and taper angle precisely matching the frustum-shaped hole A in the ball head seat 1.1.

[0065] Subsequent assembly steps S20 and S30 are similar to those in Example 1. First, adhesive is applied to the conical hole A of the ball seat 1.1. Then, the lower conical ring portion of the integrated ball skirt assembly is inserted into the conical hole A. Finally, the ball plug 1.2 is pressed in. The powerful clamping force generated by the tapered surfaces securely clamps and secures the lower portion of the integrated ball skirt assembly between the ball seat 1.1 and the ball plug 1.2. In this structure, the ball plug 1.2 not only clamps the lower conical ring of the support portion but also directly or indirectly applies pressure to the end of the feather shaft inserted therein, thus achieving a double fixation and enhancing the firmness and reliability of the connection.

[0066] In addition, if Figure 7As shown, the ball head and ball skirt can be fixed together by a support portion. Specifically, the support portion includes a support ring 4.1 (i.e., a first support ring), a support ring 4.2 (i.e., a second support ring), and / or a support ring 4.3 (i.e., a third support ring). The support rings 4.1 and 4.2 are distributed on the ball skirt body. The support ring 4.3 is connected to the lower end of the ball skirt body and is clamped and fixed between the outer shell and the inner core. The ball skirt body does not pass through the support rod.

[0067] The solution of this embodiment replaces the "line drawing" step with an "injection molding" and "plug-in" process by adopting an injection-molded integral support portion. Because the various structural parameters of the ball skirt (such as feather spacing, deflection angle, support ring position, etc.) are precisely defined by the mold, it helps to achieve a high degree of product consistency. The entire manufacturing process, from injection molding of the support portion, plugging of feathers to the final press-fit assembly, is suitable for fully automated assembly line operations, thereby improving production efficiency and reducing manufacturing costs. In addition, compared with traditional line-drawn ball skirts, this ball skirt structure with a rigid frame has enhanced deformation resistance and impact resistance, which can provide more stable flight performance.

[0068] Example 4

[0069] This embodiment is used to illustrate the application of the technical solution of the present application in the field of integral injection-molded plastic badminton. Similar to the above embodiment, the badminton of this embodiment also uses a split ball head 1 consisting of a ball head seat 1.1 and a ball head plug 1.2.

[0070] like Figure 8 As shown, this embodiment is characterized by the material and shape of the skirt 2. Specifically, the skirt 2 is no longer composed of multiple feathers, but is instead a one-piece, integrally formed component through an injection molding or molding process. The material can be a polymer foam material with specific elasticity and toughness, such as foamed polypropylene, foamed polyurethane, or other specialized modified plastics. By controlling the foaming ratio (for example, between 1.2 and 6.0 times), the weight, hardness, and aerodynamic performance of the skirt can be precisely adjusted to simulate the flight trajectory and hitting feel of a natural badminton shuttlecock. The lower portion of this integrally injection-molded skirt 2 is integrally formed into a conical ring structure that matches the conical hole A in the ball head seat 1.1. The outer surface of this conical ring has the same taper as the inner wall of the conical hole A, and its dimensions are precisely calculated to ensure a tight fit during assembly.

[0071] The manufacturing method flow of the embodiment is correspondingly simplified. In the embodiment, step S10 (providing a prefabricated ball skirt) is to provide a prefabricated integral plastic ball skirt. The ball skirt is a single and complete component, and no additional pre-assembly is required. Steps S20 (placing the ball skirt) and S30 (pressing and fixing) are consistent with the core idea of the previous embodiment. In operation, the inner wall of the conical hole A of the ball head seat 1.1 can be coated with adhesive to enhance the fixing effect, then the conical ring part at the lower part of the integral plastic ball skirt is placed in the hole A, and finally the ball head plug 1.2 is pressed into the hole A. The large and uniform radial clamping force generated by the conical surface structure can firmly press and fix the lower conical ring of the plastic ball skirt between the ball head seat 1.1 and the ball head plug 1.2.

[0072] Compared with the flat surface bonding or clamping groove connection commonly used in the prior art, the conical surface clamping and fixing method has the following technical effects: on the one hand, the contact area of the conical surface is larger, which can more effectively disperse and transfer the impact force during the hitting; on the other hand, the strong radial clamping force makes the bonding between the ball skirt and the ball head more firm, and the connection strength, stiffness and anti-twisting ability are effectively enhanced, which helps to avoid excessive deformation, loosening or falling off of the ball skirt under high-speed flight and heavy hitting. Therefore, the embodiment applies the split conical surface clamping structure to the integral injection molding ball skirt, aiming to improve the problems of insufficient connection strength and poor durability of the existing plastic shuttlecock, while maintaining the production cost and consistency advantages, and improving the durability and flight performance stability of the product.

[0073] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A badminton, characterized in that: Including ball skirt and ball head; The ball head comprises an outer shell and an inner core, wherein the outer shell is provided with a receiving cavity for receiving the lower end of the ball skirt; the inner core is adapted to the receiving cavity of the outer shell; The ball skirt includes a ball skirt body and a support portion; the support portion is distributed on the ball skirt body and plays a structural supporting role; The lower end portion of the ball skirt is clamped and bonded between the outer shell and the inner core.

2. The badminton according to claim 1, characterized in that The accommodating cavity is a frustum-shaped hole, and the inner core is a frustum-shaped plug adapted to the frustum-shaped hole; the lower end of the ball skirt is fixed between the outer shell and the inner core by extrusion and bonding through the conical hole.

3. The badminton according to claim 1, wherein: The outer shell is a ball head seat, and the inner core is a ball head plug.

4. The badminton according to claim 1, wherein The ball skirt body is composed of a plurality of feathers or an integrally formed ball skirt body.

5. The badminton according to claim 4, characterized in that The ball skirt body is composed of a plurality of natural feathers or artificial feathers.

6. The badminton according to claim 5, characterized in that The feather comprises a vane and a feather shaft.

7. The badminton according to claim 6, characterized in that The support portion includes at least one support ring and / or a group of support rods; The support rod is provided with a socket or slot for inserting the natural feathers or artificial feathers; The support rings are distributed on the feather shafts or support rods of the feathers; the support rings are used to connect the plurality of natural feathers or artificial feathers into a frustum shape.

8. The badminton according to claim 7, characterized in that The natural feather or artificial feather passes through the insertion hole or slot of the support rod, and the lower end of the natural feather or artificial feather is clamped and fixed between the outer shell and the inner core.

9. The badminton according to claim 1, wherein: The support portion includes a first support ring, a second support ring and / or a third support ring; the first support ring and the second support ring are distributed on the ball skirt body; the third support ring is connected to the lower end of the ball skirt body, and is clamped and adhesively fixed between the outer shell and the inner core.

10. The badminton according to claim 1, wherein: The ball skirt is a component integrally formed of a polymer foam material, and a cone ring clamped between the outer shell and the inner core is integrally formed on the lower portion of the ball skirt.

11. A method for manufacturing a badminton, characterized in that: The method for manufacturing the badminton according to any one of claims 1 to 9 comprises the following steps: Prefabricate a trumpet-shaped ball skirt body or ball skirt; Placing the skirt body or the lower end of the skirt into the receiving cavity of the outer shell, wherein the outer shell is used to form a part of the head of the badminton shuttlecock; The inner core is pressed into the accommodating cavity, and through the cooperation between the inner core and the outer shell, the ball skirt body or the lower end of the ball skirt is clamped and adhesively fixed between the outer shell and the inner core to form the ball head.

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