CN2311287Y - carbon fiber badminton racket - Google Patents

Abstract

A carbon fiber badminton racket is formed by molding a carbon fiber prepreg material and comprises a head frame, a middle tube and a handle, wherein a circular-diameter-shaped recess is arranged between the middle point of the middle tube and the head frame, and the outer diameter of the circular-diameter-shaped recess is smaller than that of the middle tube. The utility model discloses also add the stiffening rib for the handle medial surface and improve the rigidity, have a plurality of elastic points, for the carbon fiber racket that has good strength and ball control performance.

Description

carbon fiber badminton racket

The utility model relates to a carbon fiber badminton racket, the structure of which mainly adopts 100% carbon fiber composite material as the main structure of the racket frame, has multiple elastic points, and has good strength and ball control performance.

Badminton racket is a kind of high-explosive sports equipment. Its use situation is completely different from that of tennis racket. Its characteristics are: less material is used, the net pressure and tension of the racket frame are relatively high, and the deformation of the frame body is relatively large when hitting the ball. Therefore, the development of high-performance badminton rackets is all about how to meet the above characteristics, and it is expected that there will be breakthroughs in the production process and structural design technology. Among them, a high-performance competition-level badminton racket generally has the following four basic design requirements;

(1) The head frame must be a structure capable of withstanding "high threading tension".

(2) The middle tube must be able to ensure the consistency of the upper and lower rigidity, as well as the characteristics of high elastic explosive force.

(3) The whole racket is lightweight.

(4) The feel of the racket must be designed differently according to different regions. For example, different ways of hitting the ball have different requirements for the feel of the racket.

Table 1 shows the lightweight evolution of badminton rackets.

Table I time Sketch Weight(gm)(After passing through the net) Material Before 1975 1976-19781978-19801980-19851985-19881988-19901990-19921992-19931997 Figure 5 Figure 6 Figure 6 Figure 7 Figure 8 Figure 9 Figure 11 Figure 10 Above 120 110-115105-110100-10595-10090-9585-9085-9080-85 The full wood steel racket frame has a T joint, connected to the wooden handle aluminum alloy frame, has a T joint, connected to the wooden handle aluminum head + carbon fiber middle tube + wooden handle full carbon fiber, the head frame and the middle tube are integrally formed, connected to the wooden handle full carbon fiber, The head frame and the middle tube are formed in two stages, and the wooden handle is connected to the full carbon fiber head frame. The middle tube and the handle are integrated to form a full carbon fiber frame.

At present, in order to reduce the weight of the badminton racket industry, most of the racket head frame, the middle tube and the handle are integrally formed. Please refer to Figure 11. As a result, the weight is reduced, but there are two serious problems. Disadvantages, namely:

(1) There is a large difference in cross-sectional area between point A and point B, which is difficult to control during molding, and the structural rigidity near point A and point B is relatively high due to the accumulation of carbon fiber prepreg material yarn or too many reinforcing materials. Relatively, it is easy to form stress concentration near point C, so it is easy to break when hitting the ball.

(2) Since the top of the grip of the badminton racket is integrally formed with the middle tube part, its structure is relatively rigid, and it therefore completely loses the elasticity needed for playing. There is a high-performance feel.

The purpose of the utility model is to provide a carbon fiber badminton racket, especially a kind of main structure that adopts 100% carbon fiber composite material as the frame of the racket, and more than one elastic point is designed outside the middle tube, and the outer diameter of the second elastic point is relatively middle. The tube is small, and its inner edge is supplemented by glass fiber cloth with good elasticity to increase the elasticity of the whole racket, and expand the function of rigidity distribution to prevent breakage. The second elastic point is to increase the power of the racket to smash the ball And the angle, in order to achieve the goal of smashing the ball.

The utility model has the advantages that: everyone who has played badminton knows that when smashing the ball, in addition to swinging the arm to press the ball down, it is necessary to use the wrist force to add a smashing power to hit the ball instantly. It can land in front of the net at a greater angle, but it is not easy to use the wrist force. The arm of the wrist joint is short, so the torque is quite limited. Therefore, the force of ordinary people's spiking is quite insufficient, so they often go out of bounds when smashing the ball. This utility model It is an improvement aimed at this inherent shortcoming of human beings.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the schematic diagram of a kind of carbon fiber badminton racket proposed according to the utility model;

Fig. 2 is a three-dimensional view of the handle of a carbon fiber badminton racket proposed according to the utility model;

Fig. 3A.3B is the comparative action figure of a kind of carbon fiber badminton racket proposed by the prior art and the utility model;

Figure 4 is an action diagram of swinging a carbon fiber badminton racket on the field according to the utility model;

Fig. 5 is a customary badminton racket structure, wherein the whole badminton racket is made of all wooden materials;

Fig. 6 is a badminton racket structure in which the conventional handle is made of wood, and the racket frame and middle tube are metal materials such as steel or aluminum;

Fig. 7 is a badminton racket structure in which the usual handle is made of wood, the racket frame is made of metal materials such as aluminum, and the tube is made of carbon fiber material;

Figure 8 is a badminton racket structure in which the conventional handle is made of wood, and the racket frame and the middle tube are integrally formed or formed in two stages by carbon fiber materials;

Figure 9 is a badminton racket structure in which the handle, racket frame and middle tube are all made of carbon fiber material, and formed in two sections with the middle tube;

Fig. 10 is a conventional badminton racket structure, wherein its racket frame and middle tube are integrally formed badminton racket structure by carbon fiber material, and its handle is then foamed material;

Fig. 11 is a badminton racket structure in which the conventional handle, racket frame and middle tube are integrally formed of carbon fiber materials, wherein the handle is provided with a shoulder for embedding or wrapping a jacket.

Below in conjunction with the accompanying drawings, the specific structure proposed by the utility model combined with the principle of kinematics will be further described with regard to its preferred embodiment.

Kinematics principle one:

Sports equipment is a part of the extension line of human hands and feet, and the use of equipment is used to achieve the purpose of exercise. Equipment is the interface between "people" and "play".

Design focus:

1. The equipment should be ergonomically designed for the most comfortable use.

2. Pursue the maximum function of the equipment.

Based on the above definition of sports equipment, the utility model is aimed at the so-called high-performance badminton racket, in order to pursue the maximum function of power and ball control. The utility model imitates ergonomics, compares the characteristics of human bones and joints, designs the carbon fiber badminton racket with multi-elastic features, and lengthens the racket frame, increases the function of the force arm, and achieves the functions of anthropomorphic palms, that is, strength and ball control Both features.

Kinematics Principle Two:

The grip of a traditional badminton racket is made of wood.

As shown in Figure 1, the utility model is an enlarged extension of the racket as artificial. The grip part is a high-strength, high-rigidity explosive point. The traditional wooden grip only provides the characteristics of light weight, easy processing, and low price, and does not greatly improve the strength and rigidity, especially the aperture and center of the middle tube. The position will affect the level of a racket. The utility model selects engineering resin reinforced material for injection molding, plus, the direction of the lower force, the rib design, increases the physical I value, improves the rigidity, and achieves the most comfortable application of ergonomics.

Kinematics Principle Three:

The principle of the frame design for the multi-elastic point frame is as follows:

1. A carbon fiber center tube is the source of the elasticity of the entire frame, and it is the soul of the characteristics of the entire frame. Its elastic point occurs at the middle point, which is the elastic point when hitting the ball. It is hereby named: EFP (1), the natural elastic point in the center of the tube.

With reference to Fig. 1, the utility model designes the second elastic point by comparison with the wrist joint, which is named as WFP (2) to increase the elastic point.

In the same way, the utility model is on the head frame, because the current player needs to hit the ball more quickly and buckle the shuttlecock, and the third elastic point of the racket frame is added, which is named as the micro-control elastic point FFP (3).

2. The first elastic point (EFP (1) in Fig. 1), because the straight tube structure is the same, the elastic point will naturally occur at the midpoint, which is determined by the shape factor.

3. The second elastic point (WFP (2) in Fig. 1), the utility model adopts the outer diameter reduction and the depression 3 cm long, and the two outer sides are within the range of 2 cm each. Coefficient of fiber cloth, replacing the carbon fiber prepreg material of the original structure (can reduce the rigidity and increase the elastic area). In principle, rigidity = E*I. As shown in the table in Appendix 1, the physical values of Type I objects of the same shape are the same, but they are made of different materials, such as steel, titanium, and aluminum. The E values of carbon fiber/epoxy materials are different, and the resulting rigidity is naturally different.

The utility model considers that the elastic point cannot be concentrated, otherwise it will cause a weak point, and the stress concentration point is easy to break. Therefore, in the design, in fact, the flexible area is named, not a point.

4, the 3rd elastic point (FFP (3) among Fig. 1), the utility model is to take to change side frame height to seek elastic point, I value reduces, increases softness, and this is the design basis of micro-control elastic point.

The difference between the utility model and the traditional racket in the high functional features

1. In the evolution process of traditional rackets, there are some ideas related to a single item of the present invention, but they are only approximate, and there is no overall design consideration for the functions of the entire racket.

(1) For example, the central elastic point of EFP (1), which is inherent in traditional rackets.

(2) WFP (2) sees the elastic point. The traditional racket has developed a similar principle, but instead of reducing the diameter of the circle, it only has the upper and lower shoulders level, and the left and right sides still maintain a circular arc. The outer diameter of the utility model (Φ=6.8-7.2mm) is lower than that of the original middle tube (Φ=7.5mm), and the manufacturing process is different from the traditional blow molding method. The utility model adopts prepreg material and machine rolling In the WFP (2) point, the 3 cm recessed area will retain the traces of the shrink tape winding in the manufacturing process to highlight the characteristic design, and the function called the elastic point is the first in the market, and it is very unique. novelty.

(3) Micro-controlled elastic point FFP (3), in the history of racket development, there have been designs with variable heights on the side frame, but only limited to the special requirements of a single item. The utility model is a combination of multi-characteristics in conjunction with the full racket frame, which forms a racket design with improved functionality.

(4) The design of the EPI grip (ENGINEERING PLASTIC INJECTION) (as shown in Figure 2). In the history of rackets, some people have tried to use plastic materials such as PP, PVC, or engineering resins such as NYLON, ABS, etc. to injection mold grips. Unfortunately, all of them failed. , the main reasons are:

Due to the weight limit, the strength and rigidity of general plastics cannot meet the needs of the grip, adding materials but overweight. Except some of them use one-piece carbon fiber handles or PU foam handles for carbon fiber rackets, the rest are all made of wooden handles. The utility model solves the material formula, and adds a rib tube design to the grip to improve the rigidity, and is applied in the direction to be used, which is novel and unique.

2. The so-called high functional carbon fiber badminton racket must have the following basic elements:

(1) Lightweight (without netting), the finished frame is within 85gm.

(2) power (power):

The traditional middle tube is 285mm long, but the utility model increases to 300mm long

The total length of the traditional racket is 665mm long, and the utility model increases to 675-680mm, so the force arm of the utility model is lengthened and the power is increased.

(3) Ball control: For traditional rackets, the frame is generally an aluminum frame or an integrally formed carbon racket frame. The middle tube is a straight carbon fiber tube or partly has a TAPER middle tube or a non-circular shape tube. The handle only continues the traditional hand-holding purpose, and does not seek to increase rigidity. The rigidity of the grip is much higher than that of the middle tube, so that the relatively elastic area occurs on the carbon fiber racket frame.

Please refer to Fig. 1 and Fig. 2, the head frame 10 and the middle pipe 20 of the present utility model are made of carbon fiber prepreg material integrally formed, and a handle 30 is hollow, and a coupling groove 32 is provided inside it. Its inner edge wall is provided with reinforcing ribs 31 to strengthen the structural rigidity and bearing capacity of the handle 30. The central part of the middle tube 20 naturally forms the first elastic point 21, and the first elastic point 21 is formed between the head frame 10 and the first elastic point 21. There is a depression 221 with an outer diameter smaller than the outer diameter of the middle pipe 20. Because the outer diameter is smaller than the middle pipe 20, it is easier to bend. Furthermore, the inner edge of the depression 221 is provided with a reinforcing material glass fiber cloth 222 with good elasticity. , used to strengthen the structure of the recess 221 and strengthen the expansion of the elastic region. Due to the above-mentioned characteristics, the second elastic point 22 is formed. As for the part of the frame 10, the two lower places formed outside the two sides are the third elastic point. A part is a customary part, which is also used to increase the flexibility of the head frame 10 .

The utility model has two main features: the first is the depression 221 of the middle tube 20, and the second is the reinforcing rib 31 inside the handle 30. The key to winning a badminton game lies in the part of killing the ball. To accelerate the ball, the wrist force must be added to smash the ball so that the ball lands in front of the net at a greater angle. However, because the arm of the wrist is small, the torque is relatively small. If the torque is too small, it will not be enough to affect the landing point of the ball. Maybe because the angle is too small and falls out of bounds, this part please refer to shown in Figure 4 in particular, so the power of smashing the ball depends on the strength of the wrist smashing the ball, this part is exactly the spirit of the present invention. The second elastic point 22 of the second elastic point 22 can increase the pitch angle of the whole racket when the user smashes the ball, as shown in Figure 3, this figure especially shows that the pitch angle of the utility model (3B) is obviously different from that of the conventional racket (3A) , the larger the downward tilt angle, the greater the force of the downward buckle, which can greatly increase the downward angle and force of the ball, and also increase the chance of a successful smash. While improving the smashing force, the relative grip 30 can bear the force It also increases relatively, so the utility model is provided with a reinforcing rib 31 inside the handle 30 to improve the rigidity and bearing capacity of the handle 30. The above description is further strengthened for Fig. 4. When the front row attacking players swing their rackets, their If the angle is too small, it will be out of bounds when it is less than θ2 angle. Of course, when the angle is larger, its speed will be greater, and the opponent will miss it. Using the utility model will make the falling angle of the ball larger, such as θ1 angle. The faster the landing time, of course the opponent's reaction time will also be shortened, and the chances of him not being able to catch the ball will increase accordingly.

The advantages that the utility model considers as an integral racket are as follows:

(1) Emphasize that the middle tube has two elastic points, plus one elastic point FFP (3) on the head frame, which is especially suitable for the rackets with special functions of the front row players.

(2) The second elastic point WFP(2) of the middle tube is located between the central point of the tube and the point EFP(1). The T-head part combined with the middle tube and the head frame is shown in Figure 1, which is supposed to be the wrist joint Fall between the elbow joint and the palm. In order to bring into play the batting effect of smashing the ball and keep the winding traces, the spring-like sensory effect is one of the greatest characteristics of the utility model.

(3) The grip is made of glass reinforced fiber 5-10%, engineering resin (ABS), injection molding, especially on the upper and lower sides of the grip, the rib design is added to improve the rigidity in the direction of force, and the racket frame design with carbon fiber multi-elastic points, Form a fully coordinated high-function badminton racket.

Claims (3)

1, a kind of carbon badminton racket is made of the carbon fibre initial rinse forming materials, comprises a frame, middle pipe and handle, it is characterized in that: be provided with a circle footpath type recess between the mid point of middle pipe and a frame, this circle directly middle external diameter of pipe of external diameter of type recess is little.

2, carbon badminton racket according to claim 1 is characterized in that: the inner edge at recess is provided with glass fabric.

3, a kind of carbon badminton racket is characterized in that: wherein handle is to add reinforcement short carbon fiber thigh with engineering resin, ABS, 5～10% content ejection formations, and following thereon internal face is provided with the handle of ribs.

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