Nickel-titanium wire middle tube structure of a feather racket

Abstract

The utility model relates to a feather racket technical field especially a kind of feather racket's nickel-titanium wire middle tube structure, including three carbon fiber yarns, respectively first carbon fiber yarn, second carbon fiber yarn, third carbon fiber yarn, first carbon fiber yarn is laid on second carbon fiber yarn and one end of first carbon fiber yarn is recessed in second carbon fiber yarn inside, between first carbon fiber yarn and second carbon fiber yarn, it is provided with one or more nickel-titanium wires, first carbon fiber yarn, second carbon fiber yarn and nickel-titanium wire are wound on iron core, third carbon fiber yarn is wound on second carbon fiber yarn outside.The utility model obtains a kind of feather racket's nickel-titanium wire middle tube structure, nickel-titanium wire has stronger superelastic memory and higher flexibility, after being deformed by external force, it can assist middle tube to quickly restore to original state, to improve the use performance of feather racket, while the middle tube containing nickel-titanium wire has high strength, better durability, and better torsional resistance.

Description

Technical Field

[0001] This utility model relates to the field of badminton racket technology, and in particular to a nickel-titanium wire tube structure for a badminton racket. Background Technology

[0002] Currently, badminton racket shafts are made of multi-layered carbon fiber composites or a composite of carbon fiber and glass fiber. These shafts are relatively stiff, resulting in a less comfortable overall feel. During prolonged play on the court, high-frequency swings and smashes cause fatigue, reducing the elasticity of the shaft and leading to poor control and dexterity. Athletes cannot utilize the shaft's elasticity, resulting in powerless smashes, inaccurate shot placement, and a lack of enjoyment from the sport, indirectly contributing to sports injuries. Utility Model Content

[0003] To address the aforementioned technical shortcomings, this invention provides a nickel-titanium wire tube structure for badminton rackets, which improves the tube's resilience and durability.

[0004] This utility model discloses a nickel-titanium wire tube structure for a badminton racket, comprising three layers of carbon fiber yarn: a first carbon fiber yarn, a second carbon fiber yarn, and a third carbon fiber yarn. All three layers are impregnated with epoxy resin. The first carbon fiber yarn is laid on top of the second carbon fiber yarn, with one end of the first carbon fiber yarn recessed inside the second carbon fiber yarn. One or more nickel-titanium wires are arranged between the first and second carbon fiber yarns. The first carbon fiber yarn, the second carbon fiber yarn, and the nickel-titanium wires are wound around an iron core, and the third carbon fiber yarn is wound around the outside of the second carbon fiber yarn.

[0005] The number of nickel-titanium wires is 1-3. When the number of nickel-titanium wires is 2 or 3, the nickel-titanium wires are evenly distributed and distributed on the same winding circumference.

[0006] The fiber direction of the first carbon fiber yarn is at a 45° angle to the axial direction of the iron core; the fiber direction of the second carbon fiber yarn is at a 90° angle to the fiber direction of the first carbon fiber yarn; and the fiber direction of the third carbon fiber yarn is at a 0° angle to the axial direction of the iron core.

[0007] The present invention provides a nickel-titanium wire tube structure for a badminton racket. The nickel-titanium wire has strong superelastic memory and high flexibility. After being deformed by external force, it can help the tube quickly return to its original state, thereby improving the performance of the badminton racket. At the same time, the tube containing nickel-titanium wire has high strength, better durability, and better torsional resistance. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the yarn patchwork of this utility model. Detailed Implementation

[0009] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0010] Example 1: like Figures 1-3 As shown, this utility model discloses a nickel-titanium wire tube structure for a badminton racket, comprising three layers of carbon fiber yarn, namely a first carbon fiber yarn 4, a second carbon fiber yarn 5, and a third carbon fiber yarn 6. The first carbon fiber yarn 4, the second carbon fiber yarn 5, and the third carbon fiber yarn 6 are all impregnated with epoxy resin. The first carbon fiber yarn 4 is laid on the second carbon fiber yarn 5, and one end of the first carbon fiber yarn 4 is recessed inside the second carbon fiber yarn 5. One or more nickel-titanium wires 2 are arranged between the first carbon fiber yarn 4 and the second carbon fiber yarn 5. The first carbon fiber yarn 4, the second carbon fiber yarn 5, and the nickel-titanium wires 2 are wound on an iron core 3, and the third carbon fiber yarn 6 is wound on the outside of the second carbon fiber yarn 5.

[0011] The number of nickel-titanium wires 2 is 3. When the number of nickel-titanium wires 2 is 3, the nickel-titanium wires 2 are evenly distributed and distributed on the same winding circumference.

[0012] The first carbon fiber yarn 4, the second carbon fiber yarn 5, and the third carbon fiber yarn 6 are all impregnated with epoxy resin. After being layered and wrapped around the iron core 3, the epoxy resin cures to form an integral structure. The lengths of the first carbon fiber yarn 4, the second carbon fiber yarn 5, and the third carbon fiber yarn 6 are basically the same, and their lengths are all greater than the required length of the central tube 1. After they are wound and cured, they need to be cut according to actual needs. The widths of the first carbon fiber yarn 4 and the second carbon fiber yarn 5 are basically the same, while the width of the third carbon fiber yarn 6 is set according to actual needs. The nickel-titanium wire 2 is set along the length direction of the first carbon fiber yarn 4 and is sandwiched between the first carbon fiber yarn 4 and the second carbon fiber yarn 5. The length of the nickel-titanium wire 2 can be slightly less than the length of the central tube 1, that is, the length of the nickel-titanium wire 2 is less than the lengths of the first carbon fiber yarn 4 and the second carbon fiber yarn 5. There are gaps between the two ends of the nickel-titanium wire 2 and the two ends of the first carbon fiber yarn 4 and the second carbon fiber yarn 5 along their length direction.

[0013] In this embodiment, there are 3 nickel-titanium wires 2, which are evenly spaced. The distance between two adjacent nickel-titanium wires 2 is one-third of the circumference of the circle where the nickel-titanium wire 2 is wound.

[0014] The end of the first carbon fiber yarn 4 is recessed into the second carbon fiber yarn 5. That is, when it is wound around the iron core 3, the second carbon fiber yarn 5 is wound in a single layer first, and after traveling a certain distance, the first carbon fiber yarn 4 is wound together onto the iron core 3, making the initial position of the winding flatter and the roundness of the entire tube 1 better.

[0015] Specifically, for example: the first carbon fiber yarn 4 has a length of 32cm and a width of 14.7cm; the second carbon fiber yarn 5 has a length of 32cm and a width of 14.7cm; the third carbon fiber yarn 6 has a length of 32cm and a width of 14cm; and the nickel-titanium wire 2 has a diameter of 0.2mm and a length of 26cm.

[0016] When the first carbon fiber yarn 4 and the second carbon fiber yarn 5 are stacked, the end of the first carbon fiber yarn 4 is recessed by 0.5cm. The distance between the nickel-titanium wire 2 closest to the end of the first carbon fiber yarn 4 and the end of the first carbon fiber yarn 4 is 3cm.

[0017] like Figure 3 As shown, the fiber direction of the first carbon fiber yarn 4 forms a 45° angle with the axial direction of the iron core 3; the fiber direction of the second carbon fiber yarn 5 forms a 90° angle with the fiber direction of the first carbon fiber yarn 4; and the fiber direction of the third carbon fiber yarn 6 forms a 0° angle with the axial direction of the iron core 3.

[0018] By using the first carbon fiber yarn 4 with its fiber direction interlaced with that of the second carbon fiber yarn 5, and by using the third carbon fiber yarn 6 with its fiber direction along the length of the central tube 1, the strength and bending resistance of the central tube 1 after molding can be greatly improved.

[0019] The middle tube 1 and the racket prepared according to the above characteristics and traditional curing process in this embodiment have the following technical effects in actual use: The nickel-titanium wire 2 possesses strong superelastic memory and high flexibility, allowing it to quickly return to its original shape after being deformed by external force. Therefore, the nickel-titanium wire shaft 1 maintains its rapid rebound characteristics even under high-frequency bending, improving the speed and accuracy of smashes while reducing wrist strain and minimizing sports injuries. Regarding strength testing, the strength of traditional shafts is generally 22-28 kg, while the strength of the nickel-titanium wire shaft 1 in this embodiment reaches 30-35 kg, demonstrating that the nickel-titanium wire shaft 1 is stronger and more durable than ordinary shafts. The torsional resistance of a traditional shaft at 8 kg is approximately 25-30 degrees, while the torsional resistance of the nickel-titanium wire shaft 1 at 8 kg in this embodiment is approximately 18-24 degrees, showing better torsional resistance than ordinary shafts. In a regular badminton racket, the shaft may break during a powerful smash, causing the entire frame to fly out and potentially hit the athlete. However, in this embodiment, even if the shaft of the racket with the nickel-titanium wire shaft 1 breaks, the nickel-titanium wire 2, due to its high flexibility, will not break, and the frame will not fly out, thus providing greater safety.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly 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 being 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 being 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] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simplification, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A nickel-titanium wire tube structure for a badminton racket, characterized in that: It includes three layers of carbon fiber yarn, namely a first carbon fiber yarn, a second carbon fiber yarn, and a third carbon fiber yarn. All three layers are impregnated with epoxy resin. The first carbon fiber yarn is laid on the second carbon fiber yarn, with one end of the first carbon fiber yarn recessed inside the second carbon fiber yarn. One or more nickel-titanium wires are arranged between the first and second carbon fiber yarns. The first carbon fiber yarn, the second carbon fiber yarn, and the nickel-titanium wires are wound on an iron core, and the third carbon fiber yarn is wound on the outside of the second carbon fiber yarn.

2. The nickel-titanium wire tube structure for a badminton racket according to claim 1, characterized in that: The number of nickel-titanium wires is 1-3. When the number of nickel-titanium wires is 2 or 3, the nickel-titanium wires are evenly distributed and distributed on the same winding circumference.

3. The nickel-titanium wire tube structure of a badminton racket according to claim 1 or 2, characterized in that: The fiber direction of the first carbon fiber yarn is at a 45° angle to the axial direction of the iron core; the fiber direction of the second carbon fiber yarn is at a 90° angle to the fiber direction of the first carbon fiber yarn; and the fiber direction of the third carbon fiber yarn is at a 0° angle to the axial direction of the iron core.

Images