Badminton racket middle tube

Abstract

The utility model relates to the technical field of badminton racket middle pipes, and provides a badminton racket middle pipe which is stable and solid in ball feeling and strong in strength and torsion resistance, and comprises a fiber pipe, a cavity is arranged in the fiber pipe, a solid filling rod is inserted in the cavity, the outer surface of the filling rod is coated with a resin layer used for bonding the outer wall of the filling rod and the cavity in the fiber pipe, and the fiber pipe is a hollow pipe. A filling powder layer is further adhered to the outside of the resin layer, the filling rod is adhered to the cavity of the fiber tube through the resin layer and fills the cavity of the fiber tube, and the filling powder layer fills a gap between the cavity of the fiber tube and the filling rod.

Description

Technical Field

[0001] The utility model relates to the technical field of a badminton racket middle tube, in particular to a badminton racket middle tube. Background Art

[0002] A badminton racket is a sporting good, generally composed of a racket head, a racket shaft and a racket handle. The racket shaft is the middle tube, which is used to connect the racket handle and the racket head, and provide support when the badminton racket is swung, and resist the torque in all directions generated during the swinging process. During the production process of the existing badminton middle tube, the middle tube is formed by an external mold in conjunction with internal wind pressure. The internal wind pressure requires a duct for injecting gas to pass through the inner cavity of the middle tube, and then the middle tube is compacted and formed in conjunction with the pressure of the external mold and the internal wind pressure of the duct expansion. After forming, the duct is removed to obtain a finished badminton racket middle tube.

[0003] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: after the existing badminton racket middle tube is formed, there will be a cavity for accommodating the air duct inside, and then in the process of playing badminton, air convection is formed between the hollow middle tube and the racket head which is also hollow when the racket is swung, resulting in air flow vibration, which makes the ball feel unstable when the racket hits the ball. At the same time, due to the hollow characteristics of the middle tube, it is easy to cause defects in the strength and torsion resistance of the middle tube. Utility Model Content

[0004] The utility model aims to provide a badminton racket middle tube with a stable ball feel and strong strength and torsion resistance in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a badminton racket middle tube, including a fiber tube, a cavity is provided in the fiber tube, a solid filling rod is inserted into the cavity, the outer surface of the filling rod is coated with a connecting layer for bonding the outer wall of the filling rod and the cavity in the fiber tube, a filling powder layer is also adhered to the outside of the connecting layer, the filling rod adheres to the fiber tube cavity through the connecting layer and fills the fiber tube cavity, and the filling powder layer fills the gap between the fiber tube cavity and the filling rod.

[0006] A further improvement is that the fiber tube is formed by stacking multiple layers of fiber cloth at different fiber angles and bonding them with resin and rolling them up at the same time.

[0007] A further improvement is that the filling rod is a carbon rod.

[0008] A further improvement is that the filling powder layer is a foamed resin powder layer adhered to the outside of the connecting layer.

[0009] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: the utility model fills the fiber tube with a filling rod and cooperates with the filling powder layer to fill the cavity in the fiber tube, so that the middle tube has higher strength and torsional resistance under the same size. At the same time, because the inner cavity of the fiber tube is filled and becomes a solid state, the air flow vibration phenomenon of the middle tube during the hitting process is effectively avoided, making the ball feel more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the middle tube of the utility model;

[0012] Figure 2 It is a structural schematic diagram of a front view cross section of a middle tube of the utility model. DETAILED DESCRIPTION

[0013] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0014] See also Figure 1-2As shown, the technical solution adopted in this specific embodiment is: a badminton racket middle tube, including a fiber tube 1, a cavity is provided in the fiber tube 1, a solid filling rod 2 is inserted in the cavity, the outer surface of the filling rod 2 is coated with a connecting layer 3 for bonding the outer wall of the filling rod 2 and the cavity in the fiber tube 1, and a filling powder layer 4 is adhered to the outside of the connecting layer 3. The filling rod 2 adheres to the fiber tube 1 cavity through the connecting layer 3 and fills the fiber tube 1 cavity. The filling powder layer 4 fills the gap between the fiber tube 1 cavity and the filling rod 2. During processing, the fiber tube 1 is firstly formed by external mold pressure and internal wind pressure to form a fiber tube 1 with a cavity, and then the surface of the solid filling rod 2 is coated with resin liquid for multiple times to form a connecting layer 3 on the surface of the filling rod 2. At the same time, The filling rod 2 with the connecting layer 3 is inserted into the fiber tube 1 and taken out, so that part of the resin liquid adheres to the inner wall of the fiber tube 1, which can make the adhesion between the filling rod 2 and the cavity of the fiber tube 1 more firm. Then, before the connecting layer 3 is solidified, the filling rod 2 with the connecting layer 3 is put into the filling powder for rolling, so that a layer of filling powder layer 4 is attached to the connecting layer 3. At this time, the filling rod 2 with the connecting layer 3 and the filling layer 4 attached to the outer wall can be inserted into the fiber tube 1, and then the cavity in the fiber tube 1 is fully filled, so that the middle tube has higher strength and torsion resistance under the same size. At the same time, because the inner cavity of the fiber tube 1 is filled and becomes solid, the air flow vibration phenomenon of the middle tube during the hitting process is effectively avoided, making the ball feel more stable.

[0015] The fiber tube 1 is formed by stacking multiple layers of fiber cloth at different fiber angles and bonding them with resin and rolling them up at the same time, which is conducive to making the formed fiber tube 1 more resistant to lateral force and force in the inclined direction, and making the fiber tube stronger in strength and torsional resistance;

[0016] The filling rod 2 is a carbon rod, which is beneficial to reducing the overall middle rod mass and maintaining a high bending strength;

[0017] The filling powder layer 4 is a foamed resin powder layer adhered to the outside of the connecting layer 3, which is conducive to expansion and foaming after heating, thereby better filling the gap between the connecting layer 3 and the inner cavity of the fiber tube 1 through expansion and foaming, and providing certain support for the fiber tube 1.

[0018] Working principle of the utility model: when the utility model is used, the fiber tube 1 is first molded by external mold pressure and internal wind pressure to form a fiber tube 1 with a cavity, and then the surface of the solid filling rod 2 is coated with resin liquid for many times to form a connecting layer 3 on the surface of the filling rod 2. At the same time, the filling rod 2 with the connecting layer 3 can be inserted into the fiber tube 1 and taken out, so that part of the resin liquid adheres to the inner wall of the fiber tube 1, which can make the adhesion between the filling rod 2 and the cavity of the fiber tube 1 more firm, and then before the connecting layer 3 is solidified, the filling rod 2 with the connecting layer 3 is placed in the filling powder and rolled, so that a layer of filling powder layer 4 is attached to the connecting layer 3. At this time, the filling rod 2 with the connecting layer 3 and the filling layer 4 attached to the outer wall can be inserted into the fiber tube 1, and then the cavity in the fiber tube 1 is fully filled, so that the middle tube has higher strength and torsion resistance under the same size. At the same time, because the inner cavity of the fiber tube 1 is filled and becomes solid, the airflow vibration phenomenon of the middle tube during the hitting process is effectively avoided, and the ball feel is more stable.

[0019] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0020] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A badminton racket middle tube, comprising a fiber tube (1), characterized in that: The fiber tube (1) is provided with a cavity, a solid filling rod (2) is inserted into the cavity, the outer surface of the filling rod (2) is coated with a connecting layer (3) for bonding the outer wall of the filling rod (2) and the cavity in the fiber tube (1), and a filling powder layer (4) is adhered to the outside of the connecting layer (3), the filling rod (2) adheres to the cavity of the fiber tube (1) through the connecting layer (3) and fills the cavity of the fiber tube (1), and the filling powder layer (4) fills the gap between the cavity of the fiber tube (1) and the filling rod (2).

2. A badminton racket middle tube according to claim 1, characterized in that: The fiber tube (1) is formed by stacking multiple layers of fiber cloth at different fiber angles and bonding them with resin while rolling them up.

3. A badminton racket middle tube according to claim 2, characterized in that: The filling rod (2) is a carbon rod.

4. A badminton racket middle tube according to claim 1, characterized in that: The filling powder layer (4) is a foamed resin powder layer adhered to the outside of the connecting layer (3).

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