Injection-molded badminton racket

Abstract

The utility model provides an injection molding badminton racket, relates to sports goods field, including racket frame, racket rod and handle, be equipped with a plurality of thread hole on the racket frame, all the thread hole passes through the racket frame and points to the inside of racket frame, the thread hole is used for the racket string to pass through to form the racket net, the racket frame is integrally formed through injection molding, and the racket rod is made of metal materials and / or materials containing carbon fiber materials and / or materials containing glass fiber materials. One end of the racket rod forms an insert of the racket frame and is integrated with the racket frame through injection molding. The badminton racket provided by the utility model achieves the purpose of firmly combining the racket rod and the racket frame.

Description

Technical Field

[0001] The utility model relates to the technical field of sports goods, in particular to an injection-molded badminton racket. Background Art

[0002] With the improvement of people's living standards and the rise of the national fitness craze, ball sports such as badminton, squash, and tennis have become widely popular. Among them, badminton, squash, tennis, etc. are all frame-type rackets, which are composed of a racket frame, a racket shaft, and a handle, and there is a racket net woven with racket strings on the racket frame. The racket frame, racket shaft, and racket handle of the earlier frame-type rackets are all made of wood by hand, which is not only complicated in process, high in production cost, and low in efficiency, but also very heavy, which cannot meet the needs of modern competitive sports and is not conducive to the popularization of ball sports such as badminton and squash.

[0003] With the development of industrialization, the racket frame and racket shaft of badminton rackets are mostly hollow tube structures. For example, the racket frame of low-end frame rackets is mostly made of hollow tubes such as aluminum alloy and iron alloy, and the racket shaft is mostly made of iron alloy hollow rod, glass fiber hollow rod, carbon fiber hollow rod, etc., which not only reduces the weight of the racket, but also expands the range of material selection for the racket. However, the existing badminton rackets still have the following defects: (1) In order to improve the strength of the racket, people will increase the thickness of the hollow rod to achieve it, but the gram weight will increase accordingly, which will affect the performance of sports skills; (2) In particular, the biggest disadvantage of the one-piece injection molded badminton racket is that the gram weight cannot meet the standard of the badminton racket, especially the rigidity and torsion of the racket shaft are limited, which affects its use effect. Utility Model Content

[0004] The purpose of the utility model is to provide an injection-molded badminton racket to solve the problems existing in the above-mentioned prior art, and to improve the strength of the badminton racket while ensuring the weight of the racket, including improving the torsion of the racket shaft.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides an injection-molded badminton racket, comprising a racket frame, a hollow racket shaft and a handle. The racket frame is provided with a plurality of wire holes, each wire hole penetrates the racket frame and points to the inside of the racket frame, and the wire holes are used for the racket wires to pass through to form a racket net. The racket frame is integrally formed by injection molding, and a circular hole is provided at the connection end between the injection-molded racket frame and the racket shaft, and a circular hole is provided at the connection end between the injection-molded racket frame and the racket shaft, and the size of the circular hole matches the hollow racket shaft inserted therein, and the hollow racket shaft can be inserted therein;

[0007] Preferably, one end of the hollow racket shaft becomes an insert during the injection molding of the racket frame and is integrally molded with the racket frame;

[0008] Preferably, the one-piece injection molded racket frame can be partially reinforced, and further, the thickness of the racket frame in a direction parallel to the racket mesh surface gradually becomes thinner from the racket rod connecting end to the direction away from the racket rod connecting end;

[0009] Preferably, a plurality of wire holes are located on a central axis parallel to the badminton racket wire net, and each wire hole forms an R angle from outside to inside, so that the wire passing through the wire hole is not easily scratched, and the injection molded badminton racket does not need to add additional hollow wire protection nails for protecting the wire net; a wire groove is provided between all the inwardly concave wire holes to connect the wire holes to each other, and the wire net of the badminton racket located on the outer circumferential surface of the racket frame is embedded in the wire groove on the outer circumferential surface of the racket frame, and will not be exposed on the surface of the outer circumferential surface of the racket frame;

[0010] Preferably, the material of the racket shaft is metal material and / or a material containing carbon fiber material and / or a material containing glass fiber material;

[0011] Preferably, the handle is integrally formed by injection molding, one end of the racket shaft becomes an insert during the injection molding of the handle and is integrally formed by injection molding with the handle, and the integrally formed injection molding handle is a hollow structure with one end open, and a cover is provided to seal the opening;

[0012] Preferably, a soft polymer thin layer of TPU or TPE material is formed on the surface of the integrally injection-molded handle;

[0013] Preferably, one end of the hollow racket shaft embedded in the injection-molded one-piece racket frame is a special-shaped structure, and when the injection-molded one-piece racket frame is injection-molded, one end of the hollow racket shaft special-shaped structure embedded therein is wrapped by plastic and becomes one with the racket frame;

[0014] Preferably, one end of the hollow racket shaft embedded in the injection-molded one-piece racket frame has a short hollow tube cross-connected with the hollow racket shaft, and when the injection-molded one-piece racket frame is injection-molded, one end of the racket shaft embedded therein is wrapped with plastic, and plastic is injected into the hollow short tube to form a whole with the racket frame;

[0015] Preferably, one end of the hollow racket shaft embedded in the injection-molded one-piece racket frame has a through-wall hole penetrating through the two side walls of the hollow rod, and a hollow rivet passes through the through-wall hole respectively, and the end of the rivet with a larger diameter cannot pass through the through-wall hole and is left outside the tube wall, and the end of the rivet with a smaller diameter that can pass through the through-wall hole is riveted to the outside of the tube wall on the other side; when the injection-molded one-piece racket frame is injection-molded, one end of the racket shaft embedded therein is wrapped with plastic, and plastic is injected into the hollow rivet to form a whole with the racket frame;

[0016] Preferably, the other end of the hollow racket shaft embedded in the integral injection molded handle has a hollow short tube cross-connected with the hollow racket shaft, and when the integral injection molded handle is injection molded, the other end of the racket shaft embedded therein is wrapped with plastic, and plastic is injected into the hollow short tube to form a whole with the handle;

[0017] Preferably, the other end of the hollow racket rod embedded in the injection-molded one-piece handle has a through-wall hole that passes through the two side walls of the hollow rod, and a hollow rivet passes through the through-wall holes respectively. The end of the rivet with a larger diameter cannot pass through the through-wall hole and is left on the outside of the tube wall, and the end of the rivet with a smaller diameter that can pass through the through-wall holes is riveted to the outside of the tube wall on the other side; when the injection-molded one-piece handle is injection molded, the other end of the racket rod embedded therein is wrapped by plastic, and plastic is injected into the hollow rivet to form a whole with the handle.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The utility model provides an injection-molded badminton racket, comprising a racket frame, a hollow racket shaft and a handle. The racket frame is provided with a plurality of wire holes, each of which penetrates the racket frame and points to the inside of the racket frame. The wire holes are used for the racket wires to pass through to form a racket net. The racket frame is integrally formed by injection molding. The connection end of the injection-molded racket frame and the racket shaft has a round hole. The connection end of the injection-molded racket frame and the racket shaft has a round hole. The size of the round hole matches the hollow racket shaft inserted therein, and the hollow racket shaft can be inserted therein. The badminton racket frame is integrally formed by injection molding. The injection molding can replace the iron racket frame and aluminum alloy racket frame of the badminton racket. These two racket frames need to be rolled into a round shape through the hollow iron tube and aluminum alloy tube, and then formed into the shape of the racket frame. The two ends of the tube are inserted into the alloy tee and fixed with glue. Then, the racket frame is drilled with wire holes. The metal wire holes are easy to cut the racket wires, so each wire hole must be equipped with a wire guard. In addition, the iron racket frame and aluminum alloy racket frame must be pickled before painting, and the pickling liquid will pollute the environment. The injection molding racket frame can not only save a lot of manpower and material costs, but also does not need to be pickled before painting; of course, the injection molding material will not rust, so the racket frame without painting can also be used directly, which can also save the cost of painting.

[0020] One end of the hollow racket shaft becomes an insert during the injection molding of the racket frame and is injection-molded into one piece with the racket frame; the hollow racket shaft and the injection-molded racket frame are made of different materials, which is beneficial to improving the rigidity and torsion of the racket shaft. The hollow structure can reduce the weight of the racket shaft of the frame-type racket, thereby controlling the overall weight of the badminton racket to be suitable for badminton.

[0021] The one-piece injection-molded racket frame can be partially strengthened. Furthermore, the thickness of the racket frame in a direction parallel to the racket net surface gradually becomes thinner and lighter from the rod connecting end toward the direction away from the rod connecting end. This is conducive to making the head of the racket frame lighter and more flexible. The force on the badminton racket frame is mainly concentrated on the lower end of the frame, and the force on the front end of the frame away from the rod is relatively smaller. However, as a traditional badminton racket frame made of a hollow tube, the quality of all parts of the frame is consistent, and the effect of the racket frame gradually becoming thinner and lighter in weight from the rod connecting end toward the direction away from the rod connecting end cannot be formed.

[0022] A plurality of wire holes are located on the central axis parallel to the badminton racket wire net, and each wire hole forms an R angle from outside to inside, so that the wire passing through the wire hole is not easily scratched by the wire hole of the wire frame. The injection molded badminton racket does not need to add hollow wire protection nails for protecting the wire net, and does not affect the service life of the racket wire. In this way, not only the cost of the hollow wire protection nails is saved, but also the weight of the badminton racket can be reduced to a certain extent because the installation labor of the hollow wire protection nails is not required, and at the same time, the installation labor cost is saved; the existing badminton racket wire is often exposed on the surface of the outer circumference of the racket frame, and the badminton racket is not easy to be scratched by the wire hole of the wire frame. During the use of the badminton racket, the racket frame is often scratched by hard objects such as the ground, which makes it easy for the badminton racket strings to be scratched and broken. The badminton racket described in the utility model has a wire groove between all the inwardly concave wire holes to connect the wire holes to each other, and the mesh wire of the badminton racket located on the outer circumferential surface of the racket frame is embedded in the wire groove on the outer circumferential surface of the racket frame and will not be exposed to the surface of the outer circumferential surface of the racket frame. During the use of the badminton racket, although the racket frame is often scratched, the badminton racket strings in the wire groove and not exposed on the outer circumferential surface of the racket frame cannot be scratched. Therefore, the service life of the badminton racket strings of the badminton racket of the utility model is much longer than that of the existing badminton racket strings.

[0023] The racket frame is integrally formed by injection molding, and one end of the hollow racket shaft becomes an insert during the injection molding of the racket frame and is injection molded together with the racket frame. One end of the hollow racket shaft is embedded in the injection-molded racket frame, thereby improving the firmness of the combination of the racket shaft and the racket frame. One end of the racket shaft embedded in the injection-molded integrally formed racket frame is a special-shaped structure, thereby further improving the firmness of the racket shaft and the injection-molded integrally formed racket frame.

[0024] The hollow racket shaft is made of a heat-treated iron rod, which not only controls the weight of the racket shaft within a certain range, but also greatly improves the rigidity and torsional force of the heat-treated hollow iron rod than that of an injection-molded badminton racket shaft.

[0025] The material of the hollow racket shaft is metal material and / or material containing carbon fiber material and / or material containing glass fiber material, and the weight of the racket shaft is further reduced. Meanwhile, the rigidity and torsional force of the racket shaft are further improved.

[0026] The handle of a badminton racket is formed by injection molding, and the other end of the racket shaft becomes an insert during the injection molding of the handle and is injection molded into one piece with the handle. The injection molded handle is a hollow structure with an opening at one end, and a cover is provided to seal the opening. The injection molded handle can improve production efficiency and reduce the large-scale felling of trees caused by the use of wooden handles. The hollow structure of the injection molded handle can reduce the weight of the handle. The other end of the racket shaft is embedded in the handle as an insert during the injection molding of the handle, so that the racket shaft and the handle are more firmly combined and are not easily separated during the use of the badminton racket; the other end of the racket shaft embedded in the injection molded handle is a special-shaped structure, which further improves the firmness of the racket shaft and the injection molded handle.

[0027] A soft polymer thin layer is formed on the surface of a badminton racket handle formed by hollow injection molding; the polymer thin layer adopts PTE and / or TPR as an elastomer material; the soft elastomer material on the handle surface can improve the comfort of holding the racket and can replace the handle leather on the surface of the badminton racket handle. The existing handle leather is made of PVC and / or PU leather, which is easy to be damaged, while the handle surface layer of the PTE and / or TPR elastomer material formed by secondary injection molding not only has low production cost and long service life, but also can be washed.

[0028] A short hollow tube crossing the hollow racket shaft is connected to the other end of the hollow racket shaft and / or a hollow rivet is riveted at one end of the racket shaft. During the one-piece injection molding, during the injection molding process, plastic is simultaneously injected into the interior of the short hollow tube and / or the hollow rivet embedded in the injection molded part to increase the firmness between the embedded part and the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 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 work.

[0030] Figure 1 It is an injection molded badminton racket

[0031] Figure 2 This is a cross-sectional view of an injection molded badminton racket.

[0032] Figure 3 It is the structure diagram of the racket

[0033] Figure 4 This is a cross-sectional view of the rivets embedded in the injection molded frame and integrated with the frame.

[0034] Figure 5 This is a cross-sectional view of the rivet embedded in the injection molded handle and integrated with the handle.

[0035] Figure 6 This is a cross-sectional view of the hollow short tube embedded in the injection-molded frame and integrated with the frame.

[0036] Figure 7 This is a cross-sectional view of the hollow short tube embedded in the injection molded handle and integrated with the handle

[0037] Figure 8 This is a cross-sectional view of an injection molded badminton racket frame.

[0038] Icon: 1—Injection molded badminton racket

[0039] 2—Injection molded one-piece badminton racket frame

[0040] 3—Injection molding of the badminton racket shaft

[0041] 4—Injection molded hollow handle of an injection molded badminton racket

[0042] 5—Special-shaped structure at one end of the racket shaft

[0043] 6—Hollow short tube structure at one end of the racket

[0044] 7—Hollow short rod

[0045] 8—Hollow rivet structure at one end of the racket

[0046] 9—Hollow rivets DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] Embodiment 1:

[0049] The present embodiment is an injection-molded badminton racket, comprising a racket frame, a hollow racket shaft and a handle. The racket frame is provided with a plurality of wire holes, each of which penetrates the racket frame and points to the inside of the racket frame, and the wire holes are used for the racket strings to pass through to form a racket net; the racket frame is integrally formed by injection molding, and the injection-molded racket frame and the racket shaft connecting end have a round hole, and the injection-molded racket frame and the racket shaft connecting end have a round hole, and the size of the round hole matches the hollow racket shaft inserted therein, and the hollow racket shaft can be inserted therein; the racket frame can be partially strengthened, and further, the thickness of the racket frame gradually becomes thinner from the racket shaft connecting end to the racket shaft connecting end; further, one end of the hollow racket shaft becomes an insert during the injection molding of the racket frame and is injection-molded into one piece with the racket frame; the hollow racket shaft and the injection-molded racket frame are made of different materials, which is beneficial to improving the rigidity and torsional force of the racket shaft, and the hollow structure of the racket shaft can reduce the gram weight of the badminton racket shaft, thereby controlling the overall gram weight of the racket to be suitable for badminton. According to the above requirements, the following steps are taken to achieve:

[0050] Step 1: Make a frame injection mold, multiple wire holes are located on the central axis parallel to the badminton racket wire net, each wire hole forms an R angle from outside to inside, so that the wire passing through the wire hole is not easily scratched by the wire hole of the wire frame, the injection molded badminton racket does not need to add additional hollow wire nails for protecting the net wire, and does not affect the service life of the racket wire, so that not only the cost of the hollow wire nails is saved, but also the weight of the badminton racket can be reduced to a certain extent because the installation labor of the hollow wire nails is not required, and at the same time, the installation labor cost is saved; the existing badminton racket wires are often exposed on the surface of the outer cylindrical surface of the racket frame, During use, a badminton racket often scrapes against hard objects such as the ground, which causes the badminton racket strings to be easily scratched and broken. The badminton racket described in the utility model has a wire groove between all the inwardly concave wire holes to connect the wire holes to each other, and the badminton racket mesh wire located on the outer circumferential surface of the racket frame is embedded in the wire groove on the outer circumferential surface of the racket frame and does not expose the surface of the outer circumferential surface of the racket frame. During use, although the racket frame of the badminton racket is often scratched, the badminton racket strings in the wire groove and not exposed on the outer circumferential surface of the racket frame cannot be scratched. Therefore, the service life of the badminton racket strings of the badminton racket of the utility model is much longer than that of the existing badminton racket strings.

[0051] Step 2: Choose a hollow racket shaft of suitable size. There are several types of hollow rackets to choose from: the material of the hollow racket shaft is metal material and / or a material containing carbon fiber material and / or a material containing glass fiber material. Further, one end of the above hollow racket shaft is made into a special shape, and / or a hollow short rod intersecting with the hollow racket shaft is connected to one end of the above hollow racket shaft, and / or a hollow rivet is provided at one end of the above hollow racket shaft to pass through the two side walls of the hollow racket shaft and be riveted together with the hollow racket shaft.

[0052] Step 3: Select one of the above hollow rods, and embed the special-shaped end, or one end connected with the hollow short rod, or one end riveted with rivets as an insert of the injection-molded one-piece frame into the frame mold during injection molding, so that the racket shaft and the racket frame become one and are firmly connected and not easy to come off.

[0053] Step 4: Prepare a wooden handle with a deep hole on the center axis that matches the size of the other end of the hollow rod.

[0054] Step 5: Insert the other end of the rod of the above-mentioned integrated injection molding into the center hole of the wooden handle and solidify it with glue. Then add a protective cover to the front end of the wooden handle, wrap the wooden handle with handle leather, and seal the rear end of the wooden handle with a bottom cover to make it more beautiful.

[0055] Step 6: After the above rackets have been inspected, the surface is appropriately painted to make it more beautiful.

[0056] Step 7: String the above racket and tighten the strings so that the net pressure reaches a certain value.

[0057] An injection-molded one-piece badminton racket is completed.

[0058] Embodiment 2:

[0059] Step 1: Make a frame injection mold, multiple wire holes are located on the central axis parallel to the badminton racket wire net, each wire hole forms an R angle from outside to inside, so that the wire passing through the wire hole is not easily scratched by the wire hole of the wire frame, and the injection molded badminton racket does not need to add additional hollow wire protection nails for protecting the net wire, and does not affect the service life of the racket wire, so that not only the cost of the hollow wire protection nails is saved, but also the weight of the badminton racket can be reduced to a certain extent because the installation labor of the hollow wire protection nails is not required, saving the installation labor cost; the existing badminton racket wires are often exposed on the surface of the outer cylindrical surface of the racket frame, and the badminton wires are not easily scratched by the wire holes of the wire frame. During use, badminton rackets often scrape against hard objects such as the ground, which makes it easy for the badminton racket strings to be scratched and broken. The badminton racket described in the utility model has a wire groove between all the inwardly concave wire holes to connect the wire holes to each other, and the mesh wire of the badminton racket located on the outer circumferential surface of the racket frame is embedded in the wire groove on the outer circumferential surface of the racket frame and does not expose the surface of the outer circumferential surface of the racket frame. During use, although the racket frame of the badminton racket is often scratched, the badminton racket strings in the wire groove and not exposed on the outer circumferential surface of the racket frame cannot be scratched. Therefore, the service life of the badminton racket strings of the badminton racket of the utility model is much longer than that of the strings of the existing badminton rackets.

[0060] Step 2: Choose a hollow racket shaft of suitable size. There are several types of hollow rackets to choose from: the material of the hollow racket shaft is metal material and / or a material containing carbon fiber material and / or a material containing glass fiber material. Further, one end of the above hollow racket is made into a special shape, and / or a hollow short rod intersecting with the hollow racket is connected to one end of the above hollow racket, and / or a hollow rivet is provided at one end of the above hollow racket to pass through the two side walls of the hollow racket and be riveted together with the hollow racket.

[0061] Step 3: Select one of the above hollow rods, and embed the special-shaped end, or one end connected with the hollow short rod, or one end riveted with rivets as an insert of the injection-molded one-piece frame into the frame mold during injection molding, so that the racket shaft and the racket frame become one and are firmly connected and not easy to come off.

[0062] Step 4: Make an injection mold for a hollow handle, pre-set the other end of the racket shaft into the injection mold of the handle, and embed the other end of the racket shaft into the injection molded handle as an insert. Further, the end of the selected racket shaft that serves as the insert of the injection molded handle is processed into a special-shaped structure, and / or cross-connected with a hollow short rod, and / or a hollow rivet is provided at one end of the above hollow rod, passing through the two side walls of the hollow racket shaft and riveted together with the hollow rod; when the handle is injection molded, the other end of one of the above racket shafts is selected as an insert to become one with the injection molded hollow racket handle and be firmly connected and not easy to come off.

[0063] Step 5: A soft polymer thin layer of TPE or TPU material is coated on the surface of the hollow handle formed by injection molding to replace the artificial leather handle on the surface of the handle, and then the open end of the hollow handle formed by injection molding is sealed with a back cover.

[0064] Step 6: After the above rackets have been inspected, the surface is appropriately painted to make them more beautiful.

[0065] Step 7: String the above racket and tighten the strings so that the net pressure reaches a certain value.

[0066] An injection molded badminton racket is completed.

[0067] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The manufacturing steps mentioned in the above embodiments are only for describing the process of implementing the injection molding badminton structure involved in the utility model, rather than for protecting these steps. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. An injection-molded badminton racket, comprising a racket frame, a hollow racket shaft and a handle, wherein a plurality of string holes are provided on the racket frame, each string hole penetrates the racket frame and points to the inside of the racket frame, and the string holes are used for the racket strings to pass through to form a racket net, and the racket frame is integrally molded by injection molding, and a circular hole is provided at a connecting end where the injection-molded racket frame is connected to the hollow racket shaft, and the size of the circular hole matches the hollow racket shaft inserted therein, and the hollow racket shaft can be inserted therein.

2. The injection molded badminton racket according to claim 1, characterized in that: One end of the hollow racket shaft becomes an insert during the injection molding of the racket frame and is injection-molded into one piece with the racket frame.

3. The injection molded badminton racket according to claim 1, characterized in that: The one-piece injection molded racket frame can be partially reinforced. Furthermore, the thickness of the racket frame in a direction parallel to the racket mesh surface gradually becomes thinner from the racket rod connecting end toward the direction away from the racket rod connecting end.

4. The injection molded badminton racket according to claim 1, characterized in that: A plurality of wire holes are located on a central axis parallel to the badminton racket wire net, and each wire hole forms an R angle from the outside to the inside so that the wire passing through the wire hole is not easily scratched. The injection-molded badminton racket does not need to additionally add hollow wire protection nails for protecting the wire net; a wire groove is provided between all the inwardly concave wire holes to connect the wire holes to each other, and the wire net of the badminton racket located on the outer circumferential surface of the racket frame is embedded in the wire groove on the outer circumferential surface of the racket frame, and the badminton racket wire will not be exposed from the surface of the outer circumferential surface of the racket frame.

5. An injection molded badminton racket according to any one of claims 1 to 4, characterized in that: The hollow racket shaft is made of a heat-treated iron rod and / or a carbon fiber material and / or a glass fiber material.

6. An injection molded badminton racket according to any one of claims 1 to 5, characterized in that: The handle is integrally formed by injection molding, one end of the racket rod becomes an insert during the injection molding of the handle and is integrally formed by injection molding with the handle. The integrally formed injection molded handle is a hollow structure with an open end, and a cover is provided to seal the opening.

7. An injection molded badminton racket according to any one of claims 1 to 6, characterized in that: One end of the hollow racket shaft embedded in the injection-molded one-piece racket frame has a hollow short tube cross-connected with the hollow racket shaft. When the injection-molded one-piece racket frame is injection-molded, one end of the racket shaft embedded therein is wrapped by plastic, and plastic is injected into the hollow short tube to form a whole with the racket frame.

8. An injection molded badminton racket according to any one of claims 1 to 7, characterized in that: One end of the hollow racket shaft embedded in the injection-molded one-piece racket frame has a through-wall hole penetrating through the two side walls of the hollow rod, and a hollow rivet passes through the through-wall hole respectively. The end of the rivet with a larger diameter cannot pass through the through-wall hole and is left outside the tube wall, and the end of the rivet with a smaller diameter that can pass through the through-wall hole is riveted to the outside of the tube wall on the other side; when the injection-molded one-piece racket frame is injection-molded, one end of the racket shaft embedded therein is wrapped by plastic, and plastic is injected into the hollow rivet to form a whole with the racket frame.

9. An injection molded badminton racket according to any one of claims 1 to 8, characterized in that: The other end of the hollow racket shaft embedded in the injection-molded one-piece handle has a hollow short tube cross-connected with the hollow racket shaft. When the injection-molded one-piece handle is injection-molded, the other end of the racket shaft embedded therein is wrapped by plastic, and plastic is injected into the hollow short tube to form a whole with the handle.

10. An injection molded badminton racket according to any one of claims 1 to 8, characterized in that: The other end of the hollow racket rod embedded in the injection-molded one-piece handle has a through-wall hole that passes through the two side walls of the hollow rod, and a hollow rivet passes through the through-wall holes respectively. The end of the rivet with a larger diameter cannot pass through the through-wall hole and is left on the outside of the tube wall, and the end of the rivet with a smaller diameter that can pass through the two wall holes is riveted to the outside of the tube wall on the other side of the hollow rod; when the injection-molded one-piece handle is injection-molded, the other end of the racket rod embedded therein is wrapped by plastic, and plastic is injected into the hollow rivet to form a whole with the handle.

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