A golf practice stick that is easy to replace weights according to different training needs

Abstract

The present invention relates to a golf practice stick that is convenient for replacing counterweights according to different training needs. The outer end of the counterweight portion is provided with an arc-shaped slot for accommodating the insertion of coins, so that the trainee can easily disassemble the counterweight portion by inserting a coin. One end of the counterweight portion is provided with an external thread of a counterweight block; wherein, an internal thread of a counterweight block is provided inside the counterweight portion, which is used for threaded connection with a stick body; a club thread 1 and a club thread 2 are sequentially provided on the outer surface of the stick body at a certain distance; and the stick body, the club head, and the counterweight portion are fixedly connected. On the one hand, the present invention is convenient for general trainees to easily replace the slot of the counterweight block by using coins or other portable objects in the design of the end face of the counterweight block. On the other hand, by designing threaded connection structures at different positions, the stick body can simultaneously fix the counterweight portion and the club head. Such mutually fixed connection relationship is formed between the three sections, which can improve the overall stability of the practice stick when used on the basis of improving the assembly stability of the counterweight block.

Description

Technical Field

[0001] The invention relates to a golf training device, in particular to a golf training stick with which weights can be easily replaced according to different training requirements. Background Art

[0002] Golf is a sport with special charm. It allows people to exercise, cultivate sentiment, cultivate character, and communicate skills in a beautiful natural environment. It is known as a "fashionable and elegant sport". Golf clubs are the basic equipment in golf, generally consisting of a club head, a shaft, and a grip. According to the different uses of the clubs, the clubs are designed with different club head shapes and shaft lengths.

[0003] New materials and new scientific and technological research results continue to promote the transformation and updating of clubs. Since golf requires different clubs to be used in different places and under different circumstances on the golf course, the performance and use of different clubs are different. For example, there are formal golf clubs used after the sports skills have been mastered, and there are also practice sticks used for daily practice of swing posture and swing strength before the trainer has mastered the sports skills. Although this practice stick is not a formal golf club, it plays an important role in the user's practice process. Compared with the direct use of formal golf clubs, it has the advantages of more flexible training, individualization, and improved training level. In fact, for more and more golf enthusiasts or competitors, correctly selecting and using golf practice sticks is an important foundation for mastering golf. If you do not use golf practice sticks for a period of training in advance, it is difficult to master the basic skills of this sport.

[0004] It can be seen that the design of the golf practice stick structure is also related to whether the sports enthusiasts or beginners can successfully master the basic sports skills. Therefore, technical R&D personnel in the industry are also constantly researching the practice stick, which has become an important direction for the development of golf sports in recent years. For example, in recent years, some golf practice sticks have been designed based on scientific principles, with ingenious ideas, sophisticated craftsmanship, and significant effects. They can be easily used by trainers for daily practice, and are now used by more and more professional golfers and professional coaches for teaching and personal training of golf skills.

[0005] Some of the current golf practice sticks can integrate many golf training functions in one, and are also a testimony to the ingenious combination of training methods of professional or non-professional golfers and professional coaches with modern technology. It is also convenient to combine according to the needs of different users, and can be used for golf putting practice, rhythm practice, physical training, direction indication practice, ball position practice, swing plane practice, putting plane practice, etc. indoors and outdoors. Different types of golf practice sticks also have different functions, for example, specifically including: helping golfers to correctly calibrate their stance, helping golfers to master the correct batting posture, helping users to improve their swing skills, and helping golfers to effectively perform swing plane practice.

[0006] The designers of the technical solution of the present invention have analyzed the adaptability of the current golf practice stick structure when used by different training groups, and found that the current golf practice stick cannot meet the needs of different training groups to adjust the weight of the practice stick according to different training needs on the basis of ensuring the stability of its own structural assembly. The discovery of this technical problem is mainly attributed to the following factors:

[0007] First of all, since different trainees are affected by different physical qualities such as weight, height, physical strength, and arm strength, if all use golf practice sticks of the same weight, they will neither be able to easily master the basic skills of the sport nor achieve effective training results, and their efforts will be ineffective. It is necessary to select golf practice sticks that meet the needs of the users. Obviously, it is necessary to prepare practice sticks of various weights. This will cause a waste of equipment, and the training ground will have to prepare a large number of practice sticks of different specifications to meet the needs of trainees with different physical qualities. The numerous training equipment will appear too redundant.

[0008] Therefore, technicians have designed golf practice sticks that can adjust different weights to meet the different needs of users with different physical fitness. The counterweight blocks can be further replaced, and the stick body and the counterweight blocks can be movably connected to allow different trainees to obtain a suitable total amount of golf practice sticks that meet their needs by replacing the counterweight blocks. In this way, the training ground does not need to prepare various practice sticks of different weights, saving a lot of equipment.

[0009] However, there are also two common disadvantages. First, after all, the counterweight block has a certain weight, and many trainers cannot easily disassemble and assemble the counterweight block, especially when removing the original counterweight block to assemble the selected new counterweight block. The trainer cannot easily disassemble and replace it except with the help of some additional tools. This brings great trouble to the assembly of the counterweight block, which requires the help of some additional disassembly tools to complete it. At the same time, it also requires certain hands-on ability to replace it, which is not suitable for ordinary trainers. Second, if additional special tools are used, the surface of the counterweight block needs to be further designed to match the special tools. According to the trainer's own habits, these tools are not convenient to carry. If they are not carried, the counterweight block cannot be replaced. From this common problem, both the special tools and the structures added to adapt to these tools have increased costs. Third, even if the counterweight block can be disassembled and replaced, the counterweight block is usually installed. For the weight block that is mounted on the end of the training stick, the end needs to have a corresponding assembly port. For example, if a threaded assembly method is used, a threaded structure needs to be left. After assembly, since it is assembled on the end of the training stick through only one layer of threaded structure, the stability of the weight block after assembly cannot be ensured. In particular, the trainee will obviously feel a slight shaking when the weight block is loose during swing training. It can be seen that only a single fixed connection structure between the end of the training stick and the weight block cannot completely ensure the stability of the training stick application; thirdly, the end of many training sticks is movably connected to the stick body, which is also to meet the volume of different weight blocks. After all, the volume of the weight blocks is not of the same specification. It is precisely because of this movable connection method that after the weight block is assembled, the structural connection between the stick body, the end and the weight block is prone to loosening. Further, it will definitely cause the trainee to feel obvious shaking when performing strong swing posture training.

[0010] In order to satisfy different trainees to be able to easily replace the counterweights, and to avoid the slight shaking of the rod body or the counterweights during training that affects the training effect, the designers of the technical solution of the present invention combined the existing technology, first analyzed the technical problems to be solved, and then effectively carried out multiple practical attempts on the intermediate solutions adopted in each design stage, and finally obtained the optimal technical solution for the golf practice stick structure of the present invention, and proposed a golf practice stick that is easy to replace the counterweights according to different training needs. On the one hand, the end face of the counterweight is designed to facilitate the general trainees to easily replace the slot of the counterweight. At the same time, on the other hand, by designing threaded connection structures at different parts, the rod body can fix the counterweight and the end of the rod body at the same time, and the overall stability of the practice stick when it is used is improved on the basis of improving the assembly stability of the counterweight. Of course, practical applications have shown that the technical solution proposed by the present invention can alleviate, partially solve or completely solve the drawbacks of the prior art. Summary of the invention

[0011] In order to overcome the above-mentioned problems or at least partially solve or alleviate the above-mentioned problems, the present invention provides a golf training stick that is easy to replace the weight according to different training needs. On the one hand, the end surface of the weight block is designed to facilitate general trainers to easily replace the slot of the weight block. At the same time, on the other hand, the overall stability of the training stick during use is improved by designing connection structures at different positions.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] A golf practice stick that is easy to replace the weight according to different training needs, which is used for the trainee to hold one end of the stick body to practice the swing posture, swing range and swing strength before mastering the basic sports skills. The golf practice stick includes:

[0014] The rod head is fixed to the end of the rod body and has internal threads at both ends;

[0015] The counterweight part has an arc-shaped slot at its outer end for accommodating a coin to be inserted, so that the trainer can easily disassemble the counterweight part by inserting a coin. The counterweight part has an external thread at one end opposite to the arc-shaped slot, so that the counterweight block can be fixedly connected with the threaded connection part of the club head through a thread.

[0016] The counterweight block has an internal thread inside, which is used for threaded connection with the rod body;

[0017] The outer surface of the stick body is provided with a first ball stick thread and a second ball stick thread separated by a certain distance in sequence;

[0018] Among them, the bat thread 1 first passes through the inside of the bat head, so that the bat thread 2 of the bat body is first threadedly fixedly connected with the head internal thread 2 of the bat head; then the counterweight block external thread is threadedly fixedly connected with the head internal thread 1 of the bat head, and at the same time, the counterweight block internal thread is threadedly fixedly connected with the bat thread 1 of the bat body, so that the bat body, the bat head and the counterweight part are fixedly connected to each other.

[0019] By further implementing different technical means on the above technical solutions, different technical solutions can be formed on the same conceptual basis:

[0020] Technicians can also open a cross-shaped groove on the outer end surface of the counterweight part to replace the arc-shaped groove. The cross-shaped groove is composed of an arc-shaped groove and a rectangular groove intersecting each other, so that the counterweight part can be easily replaced by inserting a coin or a key into the cross-shaped groove, and the depth of the rectangular groove is the same as that of the arc-shaped groove.

[0021] In addition, the grooves formed on the outer end surface of the counterweight portion further include an arc-shaped groove and at least one strip-shaped groove, and the strip-shaped grooves are arranged on both sides of the arc-shaped groove.

[0022] The counterweight block can be replaced by inserting a coin or key into the corresponding slot and rotating it.

[0023] For the rod body, the rod head and the counterweight part, every two parts are kept in a fixed connection relationship between each other.

[0024] Technicians can configure the corresponding settings according to different needs, such as:

[0025] The cross-sectional diameter of the club body at the first thread position of the club is smaller than the cross-sectional diameter of the club body at the second thread position of the club;

[0026] The rod head adopts a cylindrical structure and its bottom diameter is larger than the rod body;

[0027] The rod body adopts a cylindrical structure and has a gripping portion.

[0028] On the one hand, the end face of the counterweight block of the present invention is designed so that ordinary trainees can easily replace the slot of the counterweight block using coins or other personal objects. On the other hand, threaded connection structures are designed at different positions so that the rod body can simultaneously fix the counterweight part and the rod head. The three sections form a mutually fixed connection relationship in pairs, which can improve the overall stability of the exercise bar when used while improving the assembly stability of the counterweight block. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described in detail below with reference to the accompanying drawings.

[0030] Figure 1 The golf training club implemented by the present invention is convenient for replacing the weight according to different training needs, and its appearance schematic diagram;

[0031] Figure 2 This is a schematic diagram of a golf training club implemented by the present invention, which is convenient for replacing the counterweight according to different training needs, and its counterweight part can be disassembled;

[0032] Figure 3 The golf training club implemented by the present invention is convenient for replacing the weight according to different training needs, and its exploded schematic diagram;

[0033] Figure 4 The golf training club implemented by the present invention is convenient for replacing the counterweight according to different training needs, and a schematic diagram of the counterweight part thereof;

[0034] Figure 5 The present invention is a golf training stick that is convenient for replacing counterweights according to different training needs, and a schematic diagram of a state in which an arc-shaped slot is provided on the counterweight portion;

[0035] Figure 6 yes Figure 5 AA direction cross-sectional diagram;

[0036] Figure 7 The present invention is a golf training stick that is convenient for replacing the weight according to different training needs, and a schematic diagram of a cross-shaped slot on the weight portion;

[0037] Figure 8 The present invention is a golf training club that is convenient for replacing the counterweight according to different training needs, and the counterweight portion thereof is additionally provided with a strip-shaped slot state schematic diagram;

[0038] Fig. 9 The present invention is a golf training club that is convenient for replacing the counterweight according to different training needs, and the counterweight portion thereof is provided with two strip-shaped slots;

[0039] Fig.10 This is a golf practice stick implemented by the present invention, which is convenient for replacing the weight according to different training needs, and a schematic diagram of the state to be assembled;

[0040] Fig.11 The present invention is a golf training club that is easy to replace the weight according to different training needs, and its assembly diagram.

[0041] In the figure:

[0042] 1. Rod body;

[0043] 11. Bat thread one; 12. Bat thread two;

[0044] 2. Rod head;

[0045] 21. Internal thread one on the head; 22. Internal thread two on the head;

[0046] 3. Counterweight;

[0047] 31. Arc-shaped slot; 32. External thread of counterweight block; 33. Internal thread of counterweight block; 34. Cross-shaped slot;

[0048] 35. Strip slot;

[0049] 4. Grip part. DETAILED DESCRIPTION

[0050] The present invention intends to implement a golf practice stick that is easy to replace the weight according to different training needs. The purpose of the technical means implemented is to solve the problem of how the current golf practice stick can easily adjust the weight of the practice stick to meet the needs of different training groups while ensuring the stability of its own structural assembly, thereby improving the overall stability of the practice stick when used.

[0051] The designers of the technical solution of the present invention mainly implemented the design of the end of the golf practice stick based on the counterweight block that is easy to replace by general trainers. At the same time, on the other hand, by designing threaded connection structures at different positions, the stick body can simultaneously fix the counterweight block and the end of the stick body. It can be seen that the constructed technical solution is not an improvement on the size, material, specific shape of the thread, etc. of the stick body. The technical solution does not include structures such as other training functions of the practice stick. If involved, all the means involved adopt conventional technical means; due to the different application environments and conditions of different demanders, the various components configured for the practice stick are not the same. For example, many products are divided into low-end and high-end. For these optional conventional technical means that are not within the scope of the technical solution of the present invention, it is not necessary for this embodiment to refine the auxiliary components, component assembly installation positions, assembly methods, installation details, etc. involved in each structure. Therefore, the implemented technical solution is actually a golf practice stick structure that can be referenced and implemented by technical personnel in this field in combination with conventional technical means. Technical personnel can actually assemble and debug the golf practice stick structure formed in accordance with the present application according to different application conditions and environments, and can construct the final improved structure. Moreover, the constructed golf practice stick structure can actually obtain a series of advantages when used, and these advantages will be gradually reflected in the following analysis of the system structure.

[0052] like Figure 1-3 As shown, for the golf training stick that is intended to be implemented above and is convenient for replacing the counterweight according to different training needs, it includes a rod body 1 of the training stick for the trainee to hold in his hand. Technicians usually prefer to use a cylindrical structure and it has a gripping portion 4. The other end of the rod body 1 (i.e., the end where the counterweight block needs to be replaced) is provided with a club head 2. For the club head 2, it is also a cylindrical structure and the bottom diameter is larger than the rod body 1. It is preferably connected to the rod body 1 by a threaded manner. During the specific implementation, technicians can use conventional technical means to reasonably configure the sizes of the club head 2 and the rod body 1.

[0053] Furthermore, the implemented club head 2 has a counterweight portion 3 that is easy to remove and replace through a threaded structure, so that the golf training stick as a whole forms a three-section structure, namely the club body 1, the club head 2 and the counterweight portion 3. This makes it easy to obtain a training stick with a suitable weight and is easier to use according to the trainee's own needs, and can also improve the flexibility of adjusting the weight of the training stick.

[0054] like Figure 4-6As shown, for the golf training club that is easy to replace the counterweight according to different training needs, an arc-shaped slot 31 is provided on the outer end surface of the counterweight part 3, and the slot is located on the outer end surface to form a rectangular hole for inserting objects such as coins. Since the replacement of the counterweight part 3 often requires the use of additional tools, it is not easy to replace if ordinary trainees do not carry such tools. The technical solution of the present invention implements the arc-shaped slot 31, a slot structure for inserting coins, so that trainees can easily use the coins they carry with them to insert the slot to rotate the counterweight part 3, thereby achieving the purpose of replacing the counterweight part 3. This design also reflects the humanized design concept.

[0055] like Figure 7-9 As shown, for the golf practice stick that is convenient for replacing the weight according to different training needs, from the perspective of reflecting the humanized design concept, the technicians also provide the following slots on the outer end surface of the weight part 3. Figure 7 The cross-shaped slot 34 shown in FIG. Figure 8 or Fig. 9 The strip-shaped slot 35 shown is combined with the arc-shaped slot 31 .

[0056] The cross-shaped slot 34 is formed by the intersection of an arc-shaped slot 31 and a rectangular slot. Figure 6 The arcuate slot 31 is set the same, the depth of the rectangular slot is set the same as the arcuate slot 31 and its length can accommodate the insertion of a regular size key, so that the counterweight part 3 can be easily replaced by inserting a coin or a key.

[0057] Accordingly, if Figure 8 or Fig. 9 The strip slot 35 shown can be set to one or two, and the technician can set it with reference to the size of the cross slot 34. After the trainee inserts the key into the strip slot 35, he can replace the counterweight part 3 by rotating it.

[0058] It can be seen that, through the implementation of the above technical solution, firstly, it is possible to easily adjust the weight of the exercise stick for different training groups, thereby solving some of the technical problems raised by the present invention.

[0059] like Figure 3 , Figure 4 , Fig.10 , Fig.11As shown, the golf practice stick implemented by the present invention is convenient for replacing the counterweight according to different training needs. In order to improve the overall stability during use by solving the problem of the structural assembly stability of the practice stick itself, it is necessary to redesign the connection structure of the three-section practice stick (stick body 1, club head 2, counterweight part 3) to form a stable structure with interconnected relationships between the three sections. The specific implementation method is as follows:

[0060] First, technicians can refer to Fig.10 The thread design method is that the outer end of the counterweight part 3 is provided with an external thread 32 of the counterweight block for threaded connection with the rod head 2, and at the same time, the inner thread 33 of the counterweight block for threaded connection with the rod body 1 is provided inside the counterweight part 3;

[0061] Secondly, technicians can refer to Fig.10 The thread design method is that the end of the club head 2 connected to the counterweight part 3 is provided with a head internal thread 21 for threaded connection with the counterweight part 3, and at the same time, the end of the club head 2 connected to the club body 1 is provided with a head internal thread 22 for threaded connection with the club body 1;

[0062] Finally, technicians can refer to Fig.10 The thread design method is that a bat thread 11 for threaded connection with the counterweight part 3 is provided at one end of the bat body 1 connected to the counterweight part 3, and at the same time, a bat thread 2 12 for threaded connection with the bat head 2 is provided at one end of the bat body 1 connected to the bat head 2.

[0063] Accordingly, after implementing the above connection method, the technicians then match and design the dimensions of the connection parts and the shapes of the threads of the three-section structure according to conventional technical means so that they can be connected to each other by threads. These conventional technical means, for example, the cross-sectional diameter of the rod body 1 at the position of the bat thread 11 is smaller than the cross-sectional diameter of the rod body 1 at the position of the bat thread 2 12, so that the rod body 1 at the position of the bat thread 11 can directly pass through the head internal thread 2 22 that is threadedly matched with the bat thread 2 12. In addition, some other conventional technical means will not be repeated.

[0064] For the golf practice club that is easy to replace the counterweight according to different training needs implemented by the above invention, when removing and replacing the counterweight part 3, first insert a coin or other personal item into the groove on the end surface of the counterweight part 3, and the user can easily twist the counterweight part 3 by rotating it; if the club head 2 needs to be replaced due to the change in the volume of the counterweight part 3, when reassembling, the club thread 11 of the club body 1 first passes through the inside of the club head 2, so that the club thread 2 12 of the club body 1 is first threadedly fixedly connected with the head internal thread 22 of the club head 2, and then the selected counterweight part 3 is installed, so that the external thread 32 of the counterweight block is threadedly fixedly connected with the head internal thread 21 of the club head 2, and the internal thread 33 of the counterweight block is threadedly fixedly connected with the club thread 11 of the club body 1, thereby forming a practice stick structure in which the parts are kept stable by the corresponding internal and external threaded fixed connection of the club body 1, the club head 2, and the counterweight part 3. Since the three sections can be connected to each other by threads regardless of whether they are adjacent to each other, not only the stability of the structure of the training stick itself is achieved after the counterweight is replaced, but also the stability of the training stick is improved when the trainer is performing swing training.

[0065] In addition to the technical solutions of the present invention, the structure of a golf practice stick with a reasonable layout is not limited to the above-mentioned devices and components. Technicians can add or reduce the technical solutions provided by the present invention, or can further design a golf practice stick with other functions based on the technical solutions of the present invention. Since these are all expansion aspects, they will not be elaborated further.

[0066] In the description of this specification, if the terms "Example 1", "this embodiment", "specific implementation" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention or the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0067] In the description of this specification, the terms "connect", "install", "fixed", "set", "having", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The above description of the embodiments is to facilitate the understanding and application of ordinary technicians in the technical field. It is obvious that those familiar with the technical field can easily make various modifications to these examples and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution implemented based on the technical solution of the present invention and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the present invention, for example, on the basis of optimizing the structure of a golf practice stick, a technical solution is formed by optimizing and improving a counterweight block with a coin or key insertion slot, and the technical solution does not exceed the beneficial effect of the present invention; ② The equivalent replacement of some features of the technical solution of the present invention by using the known technology, the technical effect produced is the same as the technical effect of the present invention, for example, conventional replacement of the thread shape or size, etc.; ③ The technical solution of the present invention is expanded on the basis of the technical solution of the present invention, and the substantive content of the expanded technical solution does not exceed the technical solution of the present invention; ④ The equivalent transformation made by using the content recorded in the text of the present invention, and the obtained technical means are applied to other related technical fields.

Claims

1. A golf practice stick that is easy to change the weight according to different training needs, which is used by the trainee to hold one end of the stick body to practice the swing posture, swing range and swing strength before mastering the basic sports skills, characterized in that: The golf practice stick comprises: A rod head, which is fixed to the end of the rod body and has internal threads at both ends; The counterweight part has an arc-shaped slot at its outer end for accommodating a coin or a key to be inserted, so that the trainer can easily disassemble and assemble the counterweight part by inserting a coin or a key. The counterweight part has an external thread at one end opposite to the arc-shaped slot, so that the counterweight block is fixedly connected to the threaded connection part of the club head through a thread. Wherein, the counterweight block internal thread is provided inside the counterweight part, which is used for threaded connection with the rod body; Wherein, the outer surface of the rod body is sequentially provided with a first ball club thread and a second ball club thread separated by a certain distance; The bat thread 1 first passes through the inside of the bat head, so that the bat thread 2 of the bat body is first threadedly fixedly connected with the head internal thread 2 of the bat head; then the counterweight block external thread is threadedly fixedly connected with the head internal thread 1 of the bat head, and at the same time, the counterweight block internal thread is threadedly fixedly connected with the bat thread 1 of the bat body, so that the bat body, the bat head and the counterweight part are fixedly connected to each other.

2. The golf practice stick that is easy to change the weight according to different training needs according to claim 1, characterized in that: The outer end surface of the counterweight portion is provided with a cross-shaped groove to replace the arc-shaped groove.

3. The golf practice stick that is easy to change the weight according to different training needs according to claim 2, characterized in that: The cross-shaped slot is formed by the intersection of the arc-shaped slot and a rectangular slot, so that the counterweight part can be easily replaced by inserting a coin or a key into the cross-shaped slot.

4. The golf practice stick that is easy to change the weight according to different training needs according to claim 3, characterized in that: The depth of the rectangular slot is the same as that of the arc-shaped slot.

5. The golf practice stick that is easy to change the weight according to different training needs according to claim 1, characterized in that: The slots formed on the outer end surface of the counterweight portion further include the arc-shaped slot and at least one strip-shaped slot, and the strip-shaped slots are arranged on both sides of the arc-shaped slot.

6. The golf practice stick that is easy to change the weight according to different training needs according to any one of claims 1 to 5, characterized in that: The counterweight block is replaced by inserting a coin or a key into a corresponding slot and rotating it.

7. The golf practice stick that is easy to change the weight according to different training needs according to claim 1, characterized in that: The cross-sectional diameter of the rod body at the first thread position of the ball bat is smaller than the cross-sectional diameter of the rod body at the second thread position of the ball bat.

8. The golf practice stick that is easy to change weights according to different training needs according to claim 1, characterized in that: The rod head adopts a cylindrical structure and the bottom diameter thereof is larger than the rod body.

9. The golf practice stick that is easy to change weights according to different training needs according to claim 1, characterized in that: The rod body adopts a cylindrical structure and has a gripping portion.

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