TWM666751U - Badminton racket set and training balls - Google Patents

Abstract

A badminton racket set and a training ball thereof, wherein the training ball comprises an elastic body configured as a sphere. The elastic body determines a physical property according to a design parameter. The design parameter comprises material, diameter, and weight. The material is configured as a foam material. The diameter is configured to be between 4.5 cm and 7.5 cm. The weight is configured to be between 3 g and 7 g. The physical property comprises a density between 10 kg/m ³ and 35 kg/m ³ , and a recovery coefficient between 0.45 and 0.65. When a badminton racket hits the elastic body with a striking force, the elastic body hits a wall and rebounds from the wall. Thus, through the design of the spherical body and special design parameters, the rebound angle of the training ball is kept stable, and the hitting feeling is similar to that of badminton, which can train the instant reaction when receiving the ball, the ball control strength, and improve agility, muscle endurance, stability, and ball control feel.

Description

Badminton racket set and training balls

The present invention relates to a training ball, in particular to a badminton racket set and a training ball thereof.

Ball sports require sufficient endurance and explosiveness as well as good skills. Therefore, whether you are a beginner or a professional player, in order to improve your skills, you need to practice repeatedly in addition to having a coach to guide you.

Referring to FIG. 1 , a known badminton racket set 1 includes a badminton racket 11 and a badminton shuttlecock 12. The badminton shuttlecock 12 includes a ball head 121 made of a softwood material, and a plurality of feathers 122 connected to the ball head 121 and spread outward.

When a player swings the badminton racket 11 to practice hitting the ball, the head 121 of the badminton 12 will be hit by the badminton racket 11 and hit a wall 2. Then, the badminton 12 will rebound from the wall 2 in the direction opposite to the wall 2. In this way, the player learns the correct force and the stability of ball control during the hitting process.

However, the speed and flying direction of the badminton 12 after rebounding will be affected by the angle of the badminton racket 11 hitting the ball, the hitting force, or the center of gravity, structure, material, etc. of the badminton 12, and there are quite a lot of changes. For novices whose force generation method, wrist skills, and ball control ability need to be improved, they often cannot effectively control the flying direction and flying speed of the badminton 12 after rebounding, so that they cannot hit the badminton 12 rebounded from the wall 2 again, and there is a technical problem that the training effect is not as good as expected.

Furthermore, since the feathers 122 of the badminton 12 are easily broken during the hitting process, for beginners with immature skills in the early stages of training, the badminton 12 is worn out faster and more, and the cost of purchasing the badminton 12 is also higher.

Therefore, the purpose of this new invention is to provide a badminton racket set and training ball that can improve the training effect.

Therefore, the new training ball for badminton rackets can withstand the striking force from a badminton racket and is suitable for hitting a wall and rebounding from the wall. The training ball includes an elastic body configured as a sphere.

The elastic body determines a physical property according to a design parameter, the design parameter includes material, diameter, and weight, wherein the material is configured as a foam material, the diameter is configured to be between 4.5cm~7.5cm, the weight is configured to be between 3g~7g, and the physical property includes a density between 10kg/ ^m3 ~35kg/ ^m3 and a recovery coefficient between 0.45~0.65.

The new badminton racket set includes a training ball as described above and a badminton racket.

The badminton racket includes a racket frame defining a striking area, a racket shaft connected to the racket frame and extending in a length direction, and a string passing through the racket frame and distributed in the striking area. The badminton racket can change between a striking state and a non-strike state. In the striking state, the string contacts the training ball, and in the non-strike state, the string is separated from the training ball.

The function of this new model is that through the design of the spherical body and special design parameters, the rebound angle of the training ball is kept stable, and the hitting feeling is similar to badminton, which can train the instant reaction when receiving the ball, the ball control strength, and improve agility, muscle endurance, stability, and ball control feel.

3: Training ball

31: Elastic body

4: Badminton racket

40: Hitting Zone

41: Shooting frame

42: Shot

43: Network cable

5: Wall

6: Badminton court

X: Length direction

Y: width direction

Z: height direction

L1: first maximum length

L2: Second maximum length

W: Maximum width

H0: Free fall height

H1: First rebound height

H2: Second rebound height

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a schematic diagram illustrating a known badminton racket set; FIG. 2 is a schematic diagram illustrating an embodiment of the badminton racket set and its training ball; FIG. 3 is a top view of a badminton racket of the embodiment; FIG. 4 is a schematic diagram illustrating the rebound height of the training ball of the embodiment after free fall; FIG. 5 is a cross-sectional schematic diagram illustrating the training ball of the embodiment hitting a wall; and FIG. 6 is a cross-sectional schematic diagram illustrating the training ball of the embodiment rebounding from the wall.

Referring to Figures 2 to 4, an embodiment of the new badminton racket 4 set includes a training ball 3 and a badminton racket 4.

The training ball 3 includes an elastic body 31. The shape of the elastic body 31 is configured as a sphere, and a physical property is determined according to a design parameter.

In this embodiment, the design parameters include material, diameter, and weight. Among them: the material of the elastic body 31 is configured to be integrally formed with PU foam material, suitable for hitting a wall 5 extending along a height direction Z.

The diameter of the elastic body 31 is configured to be between 4.5cm and 7.5cm. Preferably, the diameter of the elastic body 31 is configured to be 5cm to 7cm, 5.5cm to 6.5cm, or 6.6cm to 7.2cm. More preferably, the diameter of the elastic body 31 is configured to be 7cm. Of course, the diameter of the elastic body 31 can also be configured to be 4.6cm, 4.7cm, 4.8cm, 4.9cm, 5.1cm, 5.2cm, 5.3cm, 5.4cm, 6cm, 6.1cm, 6.2cm, 6.3cm, 6.4cm, 6.7cm, 6.8cm, 6.9cm, 7.1cm, 7.3cm, or 7.4cm.

The weight of the elastic body 31 is configured to be between 3g and 7g. Preferably, the weight of the elastic body 31 is configured to be 3g, 4g, 5g, 6g, or 7g. More preferably, the weight of the elastic body 31 is configured to be 5g.

The physical properties include a density between 10kg/m ³ and 35kg/m ³ , and a coefficient of restitution between 0.45 and 0.65. Preferably, the density of the elastic body 31 is between 15kg/m ³ and 25kg/m ³ , or between 19kg/m ³ and 21kg/m ³ . More preferably, the density of the elastic body 31 is 20kg/m ³ . The coefficient of restitution of the elastic body 31 is 0.58.

Thus, according to the physical properties of the elastic body 31, the elastic body 31 defines a first rebound height H1 and a second rebound height H2 after freely falling from a free fall height H0 toward a badminton court 6 along a height direction Z. The free fall height H0 is configured to be 100 cm. The first rebound height H1 is configured as the height of the elastic body 31 rebounding from the badminton court 6 for the first time, which is between 15 cm and 25 cm, preferably between 18 cm and 22 cm, and more preferably, 20 cm. The second rebound height H2 is configured as the height of the elastic body 31 rebounding from the badminton court 6 for the second time, which is between 4 cm and 10 cm, preferably between 6.5 cm and 7.5 cm, and more preferably, 7 cm. The badminton court 6 is configured as a PVC elastic floor.

The badminton racket 4 includes a racket frame 41 defining a hitting area 40, a racket shaft 42 connected to the racket frame 41 and extending along a length direction X, and a string 43 passing through the racket frame 41 and distributed in the hitting area 40. The racket frame 41 defines a first maximum length L1 along the length direction X, and defines a maximum width W along a width direction Y substantially perpendicular to the length direction X. The first maximum length L1 does not exceed 27 cm, preferably, does not exceed 25 cm. The maximum width W does not exceed 22 cm, preferably, does not exceed 20 cm. The racket shaft 42 and the racket frame 41 define a second maximum length L2 along the length direction X. The second maximum length L2 does not exceed 70 cm, preferably, does not exceed 68 cm.

Referring to Figures 2, 3, 5 and 6, the badminton racket 4 can be operated by a player to change between a striking state and a non-strike state. In the striking state, the net line 43 contacts the training ball 3 and applies a striking force to the training ball 3. In the non-strike state, the net line 43 is separated from the training ball 3.

Thus, when the player swings the badminton racket 4 in a flat-drawing posture and the training ball 3 is subjected to a substantially 20.4N striking force, the elastic body 31 will hit the wall 5 at a substantially 11.1m/s ball speed and a substantially 10.4N acting force. At this time, the contact time between the elastic body 31 and the wall 5 is substantially 0.0089 seconds. Then, the elastic body 31 will rebound from the wall 5 in a direction away from the wall 5 until it is hit by the badminton racket 4 again. This cycle repeats itself, so that the player can get familiar with the ball feel, practice exerting force, and train instant reaction, ball control force, and ball control direction when hitting the training ball 3 with the badminton racket 4.

It should be noted that the striking force is not limited to 20.4N, and can also be between 17N and 23N in accordance with different ball control forces. Thus, the elastic body 31 moves toward the wall 5 at a ball speed between 8m/s and 14m/s, and hits the wall 5 with a force between 8N and 12N. At this time, the contact time between the elastic body 31 and the wall 5 is between 0.01s and 0.006s.

Since the elastic body 31 is configured as a sphere and has symmetry, the parts that contact the wall 5 are the same. This symmetry ensures that the behavior of the training ball 3 is more consistent when it rebounds, and the trajectory of the rebound is easier to judge and control. The speed of the ball when a general badminton enthusiast smashes is about 70km/h~90km/h, which is equivalent to 19.4m/s~25m/s. The speed of a flat shot is usually less than that of a smash. Obviously, the speed of the training ball 3 after being hit is close to that of a general badminton. When the trajectory of the rebound is easier to judge and control, the player can use the badminton racket 4 to hit the training ball 3 back and forth for multiple shots during the training process.

It is worth noting that when the diameter of the elastic body 31 is greater than 7.5 cm or less than 4.5 cm, it may be too large or too small and visually different from a normal badminton (not shown), making it difficult to adapt to hitting the badminton.

In addition, when the weight of the elastic body 31 is greater than 7g, or the density is greater than 35kg/ ^m3 , the training ball 3 will rebound too fast. When the weight of the elastic body 31 is less than 3g, or the density is less than 10kg/ ^m3 , the training ball 3 will rebound too slowly. Not only will the rebound speed of the training ball 3 be too different from that of a general badminton, but the hitting feeling will also be different from that of a general badminton, and there is also the problem of being unable to adapt to hitting badminton.

Through the above description, the advantages of the aforementioned embodiments can be summarized as follows:

1. This new type obtains the required physical properties through the design of a spherical body and special design parameters, so that the rebound angle of the training ball 3 is maintained stable, and the hitting feeling is similar to that of badminton. In the process of multiple shots back and forth, it can effectively train the instant reaction when receiving the ball, the ball control strength, and improve agility, muscle endurance, stability, and ball control feel.

2. Since the training ball 3 is elastic and light, it will not damage the racket frame 41 or the net line 43. The training ball 3 itself is not easy to be damaged. For beginners with immature skills in the early stage of training, it can not only slow down the speed of wear and tear and increase the service life, but also the cost of purchasing the training ball 3 is much lower than that of ordinary badminton.

However, the above is only an example of the implementation of this new model, and it cannot be used to limit the scope of the implementation of this new model. All simple equivalent changes and modifications made according to the scope of the patent application of this new model and the content of the patent specification are still within the scope of this new patent.

3: Training ball

4: Badminton racket

5: Wall

Z: height direction

Claims (10)

A training ball for a badminton racket is capable of withstanding a striking force from a badminton racket and is suitable for striking a wall extending in a height direction and rebounding from the wall. The training ball comprises: an elastic body configured as a spherical body and having a physical property determined according to a design parameter, wherein the design parameter comprises material, diameter, and weight, wherein the material is configured as a foam material, the diameter is configured to be between 4.5 cm and 7.5 cm, the weight is configured to be between 3 g and 7 g, and the physical property comprises a density between 10 kg/m ³ and 35 kg/m ³ and a recovery coefficient between 0.45 and 0.65. A training ball for a badminton racket as described in claim 1, wherein the material of the elastic body is configured to be integrally molded with a PU foam material. A training ball for a badminton racket as described in claim 1, wherein the diameter of the elastic body is configured to be 5cm~7cm, 5.5cm~6.5cm, 6.6cm~7.2cm, or 7cm. The badminton training ball according to claim 1, wherein the elastic body has a density of 15 kg/m ³ to 25 kg/m ³ . The badminton training ball as claimed in claim 4, wherein the density of the elastic body is between 19kg/m ³ and 21kg/m ³ . A training ball for a badminton racket as described in claim 1, wherein the weight of the elastic body is configured to be 4g, 5g, or 6g. A training ball for a badminton racket as described in claim 1, wherein when the striking force is between 17N and 23N, the elastic body moves toward the wall at a ball speed between 8m/s and 14m/s, and hits the wall with a force between 8N and 12N, and the contact time with the wall is between 0.01s and 0.006s. A training ball for a badminton racket as described in claim 1, wherein the elastic body is suitable for defining a first rebound height and a second rebound height after freely falling from a free fall height toward a badminton court along a height direction, the free fall height is configured to be 100 cm, the first rebound height is configured to be the height of the elastic body rebounding from the badminton court for the first time, between 15 cm and 25 cm, and the second rebound height is configured to be the height of the elastic body rebounding from the badminton court for the second time, between 4 cm and 10 cm. A badminton racket set, comprising: a training ball as described in any one of claim 1 to claim 8; and a badminton racket, including a racket frame defining a striking area, a racket shaft connected to the racket frame and extending along a length direction, and a string passing through the racket frame and distributed in the striking area, the badminton racket can change between a striking state and a non-strike state, in the striking state, the string contacts the training ball, in the non-strike state, the string is separated from the training ball. A badminton racket set as described in claim 9, wherein the racket frame defines a first maximum length along the length direction, and defines a maximum width along a width direction substantially perpendicular to the length direction, the first maximum length does not exceed 27 cm, the maximum width does not exceed 22 cm, the racket shaft and the racket frame define a second maximum length along the length direction, the second maximum length does not exceed 70 cm.

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