CN219848057U - Racquet with multi-layer core material - Google Patents

Abstract

The utility model describes a paddle tennis racket with a multi-layer core material, which includes a hitting part and a holding part. The hitting part includes a racket frame, a first surface layer, a second surface layer and an inner layer. Structure, the racket frame has an inner wall and an accommodating space surrounded by the inner wall. The inner structure is located in the accommodating space and includes an upper core material, a lower core material and at least one intermediate core material. The first surface layer The second surface layer is respectively laid on the top surface of the upper core material and the bottom surface of the lower core material and both are connected to the racket frame. The rigidity of the upper core material is greater than that of the lower core material. Through the above-mentioned structural design of the paddle tennis racket, the forehand surface and the backhand surface of the paddle tennis racket can have different rigidities.

Description

Paddle tennis racket with multi-layer core material

Technical field

The utility model relates to a paddle tennis racket. Specifically, it refers to a paddle tennis racket with a multi-layer core material, the front and back sides of which have different rigidities.

Background technique

Paddle tennis is a sport that uses a racket to hit the ball and is similar to tennis. Paddle tennis can be played in singles or doubles. The amount of activity and exercise is smaller than that of tennis. Therefore, it is suitable for people of all ages. In recent years, it has gradually become popular and popular. Loved by the general public.

The core material inside the traditional paddle tennis racket is uniform and made of a single core material. Therefore, the rigidity of the front and back sides of the traditional paddle tennis racket is the same, so it can be used with the same swing force and swing. At this angle, the power of the ball hit by the forehand surface and the backhand surface will be the same, so the player's playing style will be more limited during the game, reducing the excitement of the game.

Utility model content

One of the objects of the present invention is to provide a brand new structural design of a paddle tennis racket in which the rigidity of the forehand surface and the backhand surface are different.

According to the utility model, a paddle tennis racket with a multi-layer core material is provided, which includes a hitting portion and a grip portion connected to the hitting portion. The hitting portion includes a racket frame, a first surface layer, a second surface layer and an inner layer structure. The racket frame has an inner wall and an accommodation space surrounded by the inner wall. The inner layer structure is provided in the accommodation space and includes an upper core material, a lower core material and at least one middle core material stacked on the upper layer. Between the core material and the lower core material, the first surface layer is laid on the top surface of the upper core material and connected to the upper edge of the racket frame, the second surface layer is laid on the bottom surface of the lower core material and connected to the lower edge of the racket frame, and the upper core material Rigidity is greater than the underlying core material. Through the structural design of the above-mentioned paddle tennis racket, the power of the ball hit by the forehand surface (for example, the side corresponding to the upper core material) and the backhand surface (such as the side corresponding to the lower core material) is different, allowing the player to use Counterattack powerfully with the forehand side, or use the backhand side to control the ball and lob, allowing players to have more diverse playing styles during the game to increase the excitement of the game.

In one aspect, the upper core material can be made of a different material than the lower core material, so that the upper core material and the lower core material have different rigidities through different materials.

On the other hand, the upper core material can also be made of the same material as the lower core material, but both the upper core material and the lower core material have a foam layer structure and are made of the same material. Made of foam, the porosity of the upper core material is smaller than that of the lower core material. Through different porosity, the rigidity of the upper core material and the lower core material can be effectively controlled.

In another aspect, the number of layers of the middle layer core material may be one layer, and the middle layer core material may be a honeycomb panel.

In another aspect, the overall density of the upper core material is greater than the overall density of the lower core material.

On the other hand, the inner structure may also adopt other structural designs. Specifically, the upper core material may be a honeycomb panel with multiple upper hexagonal units, and the lower core material may also be a honeycomb panel with multiple lower hexagonal units. The material of the upper core material is the same as the material of the lower core material, and the size of each upper hexagonal unit is smaller than the size of each lower hexagonal unit. Through different sizes of hexagonal units, the rigidity of the upper core material and the lower core material can be effectively controlled.

In another aspect, the upper core material can be a honeycomb panel and the honeycomb panel of the upper core material has a plurality of upper hexagonal units, and the lower core material can also be a honeycomb panel and the honeycomb panel of the lower core material has a plurality of lower hexagonal units. The size of each upper hexagonal unit is equal to the size of each lower hexagonal unit, but the upper core material and the lower core material are made of different materials. Simply by using different materials, the upper core material and the lower core material can still have different rigidities.

In another aspect, the intermediate core material is bonded between the upper core material and the lower core material.

On the other hand, the thickness of the striking portion is between 22 mm and 38 mm, thereby complying with paddle tennis racket specifications.

Description of the drawings

The detailed structure and features of the paddle tennis racket described in the following embodiments will be described in the following embodiments. However, it should be understood that the embodiments and drawings described below are only for illustrative purposes and do not should be used to limit the patentable scope of this creation, where:

Figure 1 is a perspective view of the paddle tennis racket according to the first embodiment;

Figure 2 is a top view of Figure 1;

Figure 3 is a partial perspective cross-sectional view of Figure 1;

Figure 4 is a cross-sectional view drawn along line 4-4 in Figure 2;

Figure 5 is a cross-sectional view of the paddle tennis racket of the second embodiment;

Figure 6 is a partial perspective cross-sectional view of the paddle tennis racket of the third embodiment; and

Fig. 7 is a partial perspective cross-sectional view of the paddle tennis racket according to the fourth embodiment.

Reference signs:

1,1’,1”,1”’: paddle tennis racket;

10: Batting part;

11: Top surface;

12: Bottom;

13: Shooting frame;

131: Inner wall;

14: First surface layer;

15: Inner structure;

151: Upper core material;

152: Middle layer core material;

153: Lower core material;

16: Second surface layer;

17:Through hole;

20: Grip part;

21: Grip strap;

UT: upper hexagonal unit;

UB: Lower hexagonal unit.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

First of all, it should be noted that the technical features provided by the present invention are not limited to the specific structures, purposes and applications described in the embodiments. The terms used in the description are all exemplary descriptive terms that can be understood by those with ordinary knowledge in the technical field. The terms "front", "upper", "lower", "rear" and "left" mentioned in this specification Directional descriptive terms such as , "right", "top", "bottom", "inside", and "outside" are only illustrative descriptive terms based on normal usage directions and are not intended to limit the scope of claims.

In order to explain the technical features of the present invention in detail, the following four embodiments are listed below and explained with the accompanying drawings, among which:

As shown in Figures 1 to 4, the first embodiment provides a paddle tennis racket 1, which includes a hitting portion 10 and a grip portion 20 connected to the hitting portion 10. The hitting portion 10 is a paddle tennis racket. The part used for hitting the ball in 1 is based on the drawing of Figure 3. The hitting part 10 has a top surface 11 and a bottom surface 12. The top surface 11 and the bottom surface 12 can be used as the forehand surface and the backhand surface respectively. Of course, in some situations, it is also possible to use the top surface 11 of the hitting part 10 as the backhand surface and the bottom surface 12 of the hitting part 10 as the forehand surface, so this embodiment should not be limited. Normally, the thickness of the hitting portion 10 (ie, the distance between the top surface 11 and the bottom surface 12) is between 22 and 38 millimeters (mm), thereby complying with the specifications of paddle tennis rackets. The hitting part 10 structurally includes a racket frame 13, a first surface layer 14, an inner layer structure 15 and a second surface layer 16. The racket frame 13 is made of carbon fiber reinforced composite material, which is softened after being heated under pressure, thereby causing a bridging reaction and solidifying. The interior of the racket frame 13 is hollow in this embodiment. The racket frame 13 has an inner wall 131 , and the inner wall 131 surrounds it to form a generally diamond-shaped accommodation space. The inner layer structure 15 is provided in the above-mentioned accommodation space. The first surface layer 14 and the second surface layer 16 are used to directly contact the sphere. The first surface layer 14 and the second surface layer 16 are also made of carbon fiber reinforced composite materials. After the first surface layer 14 and the second surface layer 16 are cured and formed, The first surface layer 14 will be integrally connected to the upper edge of the racket frame 13 , and the second surface layer 16 will be integrally connected to the lower edge of the racket frame 13 .

The inner layer structure 15 is provided between the first surface layer 14 and the second surface layer 16. The inner layer structure 15 includes an upper core material 151, a lower core material 153 and a middle core material 152 stacked on the upper core material 151 and the lower layer. Between the core materials 153, the upper core material 151 is used to withstand the impact of the forehand surface, and the first surface layer 14 is laid on the top surface of the upper core material 151. The upper core material 151 is a foam layer structure, which is made of foamed EVA material (ethylene/vinyl acetate copolymer, Ethylene-VinylAcetate). The Shore hardness of the EVA material is Shore A10-25 degrees. The porosity of the material 151 is low and the overall density is high, so the upper core material 151 has high rigidity and thus has a high ability to resist deformation, thereby affecting the hitting feel. The middle layer core material 152 is used to provide a supporting effect. In this embodiment, the number of layers of the middle layer core material 152 is only one. The number of layers of the middle layer core material 152 can be adjusted according to actual needs. The middle layer core material 152 is a honeycomb board in this embodiment, and the honeycomb board can be made of aluminum board, cardboard or PP board (polypropylene). The top and bottom surfaces of the middle layer core material 152 are bonded between the upper layer core material 151 and the lower layer core material 153 through adhesive. The lower core material 153 is used to withstand the impact of the backhand surface, and the second surface layer 16 is laid on the bottom surface of the lower core material 153 . The lower core material 153 is also a foam layer structure and is made of foamed PU (Polyurethane) material. The lower core material 153 has a higher porosity (higher foaming ratio) and lower overall density, so that The upper core material 151 has low rigidity as a whole. In addition, as shown in FIGS. 1 and 4 , the hitting portion 10 is also provided with a plurality of through holes 17 , each of the through holes 17 penetrates the first surface layer 14 , the inner structure 15 and the second surface layer 16 , so that the airflow can pass through the hitting portion smoothly. ball part 10, thereby reducing wind resistance.

The gripping part 20 is used for the user to hold, and the gripping part 20 is integrally connected with the racket frame 13 . In addition, the grip portion 20 is also covered with a grip tape 21 to prevent slipping and shockproofing.

Since the upper core material 151 and the lower core material 153 are made of different foam materials, and the porosity and overall density of the upper core material 151 and the lower core material 153 are adjusted, the porosity of the upper core material 151 is smaller than that of the lower core material. Material 153 (lower foaming ratio) and the overall density of the upper core material 151 is greater than that of the lower core material 153, so that the rigidity of the upper core material 151 will be greater than that of the lower core material 153. Through this structural design, the ball hit by the player using the higher rigidity forehand surface will have higher power, which facilitates the player to use the forehand surface to return the ball powerfully. On the other hand, the force of the ball hit by a player using a less rigid backhand surface will be lower, allowing the player to use the backhand surface to control the ball and lob the ball, so players can have more diverse playing styles during competitions. , in order to increase the excitement of the competition.

The present invention also provides a second embodiment, please refer to Figure 5 . The structure of the paddle tennis racket 1' of the second embodiment is roughly the same as that of the paddle tennis racket 1 of the first embodiment. One difference is that the upper core material 151 and the lower core material 153 of the second embodiment are both made of EVA material. It is made of foam, but the porosity of the upper core material 151 is smaller than the porosity of the lower core material 153. By adjusting different porosity, the rigidity of the upper core material 151 can still be greater than that of the lower core material 153.

The present invention also provides a third embodiment, please refer to Figure 6 . The structure of the paddle tennis racket 1" of the third embodiment is roughly the same as that of the paddle tennis racket 1 of the first embodiment. The difference lies in that the upper core material 151 of the third embodiment is a honeycomb board and the upper core material 151 The honeycomb panel has a plurality of upper hexagonal units UT, each upper hexagonal unit UT is a regular hexagon in cross section, and these upper hexagonal units UT are connected to each other. The upper core material 151 is made of an aluminum plate. The middle layer core material The number of layers 152 is one, and the middle layer core material 152 is made of foamed EVA material. The lower core material 153 is also made of an aluminum plate. The lower core material 153 is also a honeycomb board and the lower core material 153 is a honeycomb board. There are multiple lower hexagonal units UB, each lower hexagonal unit UB is a regular hexagon in cross section, and these lower hexagonal units UB are connected to each other, and the size of each upper hexagonal unit UT is smaller than that of each lower hexagonal unit The size of UB. Although the material of the upper core material 151 is the same as the material of the lower core material 153, by adjusting the sizes of the upper hexagonal unit UT and the lower hexagonal unit UB of the honeycomb panel, the rigidity of the upper core material 151 can still be improved. Greater than the rigidity of the lower core material 153 .

The present invention also provides a fourth embodiment, please refer to Figure 7 . The structure of the paddle tennis racket 1"' of the fourth embodiment is roughly the same as that of the paddle tennis racket 1" of the third embodiment. The difference is that the upper core material 151 is a honeycomb panel made of aluminum plates, and the lower core material 153 is a honeycomb panel made of PP board, and the size of each upper hexagonal unit UT of the honeycomb panel of the upper core material 151 is equal to the size of each lower hexagonal unit UB of the honeycomb panel of the lower core material 153 . Through the difference in materials, the rigidity of the upper core material 151 can still be greater than that of the lower core material 153 .

Finally, it must be stated again that the methods and components disclosed in the foregoing embodiments of the present invention are only examples and are not intended to limit the patent scope of the present invention. Simple structural modifications are made without departing from the spirit of the present invention. Or changes, or replacement with other equivalent components, should still fall within the scope of the patent application for this utility model.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent substitutions, improvements, etc. shall be included in the protection scope of the present invention.

Claims (11)

1. A paddle tennis racket with a multi-layer core material, including a hitting part and a grip part connected to the hitting part, characterized in that the hitting part includes a racket frame, a first surface layer, a The second surface layer and an inner layer structure. The racket frame has an inner wall and an accommodating space surrounded by the inner wall. The inner layer structure is provided in the accommodating space and includes an upper core material and a lower core material. material and at least one middle layer core material, the at least one middle layer core material is laminated between the upper layer core material and the lower layer core material, the first surface layer is laid on the top surface of the upper layer core material and connected to the racket frame The second surface layer is laid on the bottom surface of the lower core material and connected to the lower edge of the racket frame. The rigidity of the upper core material is greater than that of the lower core material. 2. The paddle tennis racket according to claim 1, wherein the upper core material and the lower core material are made of different materials. 3. The paddle tennis racket according to claim 1, characterized in that the upper core material and the lower core material both have a foam layer structure and the upper core material and the lower core material are both foamed with the same material. The porosity of the upper core material is smaller than the porosity of the lower core material. 4. The paddle tennis racket according to claim 2 or 3, wherein the number of layers of the at least one middle layer core material is one layer, and the at least one middle layer core material is a honeycomb board. 5. The paddle tennis racket according to any one of claims 1 to 3, wherein the density of the upper core material is greater than that of the lower core material. 6. The paddle tennis racket according to claim 1, wherein the upper core material is a honeycomb panel and the honeycomb panel of the upper core material has a plurality of upper hexagonal units; the lower core material is also a honeycomb. The honeycomb board of the lower core material has a plurality of lower hexagonal units, the material of the upper core material is the same as the material of the lower core material, and the size of each upper hexagonal unit is smaller than that of each lower hexagonal unit. size of. 7. The paddle tennis racket according to claim 2, wherein the upper core material is a honeycomb panel and the honeycomb panel of the upper core material has a plurality of upper hexagonal units; the lower core material is also a honeycomb. The honeycomb panel of the lower core material has a plurality of lower hexagonal units, and the size of each upper hexagonal unit is equal to the size of each lower hexagonal unit. 8. The paddle tennis racket according to claim 6 or 7, characterized in that the number of layers of the at least one middle layer core material is one layer, and the at least one middle layer core material is a foam layer structure. 9. The paddle tennis racket according to claim 6 or 7, wherein the density of the upper core material is greater than that of the lower core material. 10. The paddle tennis racket according to claim 1, wherein the at least one middle layer core material is bonded between the upper layer core material and the lower layer core material. 11. The paddle tennis racket according to claim 1, wherein the thickness of the hitting portion is between 22 mm and 38 mm.