Threaded damping bat

Abstract

The invention provides a threaded damping bat, and relates to the technical field of bat. The threaded damping bat comprises an end cap, a bat body and a shock control layer, the end cap comprises a threaded part, external threads are arranged on the peripheral wall of the threaded part, the bat body comprises a barrel straight barrel part with the upper portion equal in diameter in the axial direction, internal threads are arranged on the inner surface of the barrel straight barrel part, and the external threads and the internal threads form a thread meshing structure so that the end cap and the bat body can be coaxially connected. The shock control layer is arranged between the external thread and the internal thread, the shock control layer can reduce the shock feeling of the holding part, and the comfort of the hand of a player is improved when the player hits a ball.

Description

Technical Field

[0001] The invention relates to the technical field of ball bats, in particular to a threaded shock-absorbing ball bat. Background Art

[0002] Baseball is one of the ball sports. It is a competitive sport in which a bat is used to hit a ball for offensive and defensive confrontation. Baseball originated in the 15th century, when paddle ball was popular in Britain. It was later introduced to the United States. In 1839, the first baseball game was held in Cooperstown, New York, USA. In 1978, the International Baseball Federation established its headquarters in Lausanne, Switzerland. In 1994, baseball was included in the Olympic Games in 1992.

[0003] Baseball bats are made of smooth round sticks. In the past, baseball bats were made of wood, which was easily damaged and cracked when hitting the ball. Later, metal baseball bats appeared. Compared with wooden bats, they are not only not easy to damage but also reusable. However, whether it is wooden, metal or other materials, baseball bats have certain defects. When the bat hits the ball, the vibration generated by the ball hitting the bat will be transmitted to the palm and arm of the hitter, causing discomfort to the hitter.

[0004] Therefore, providing a threaded shock-absorbing baseball bat becomes a technical problem that those skilled in the art need to solve urgently. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a threaded shock-absorbing baseball bat.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] The present invention provides a threaded shock-absorbing baseball bat, comprising:

[0010] An end cap, comprising a threaded portion, wherein an outer peripheral wall of the threaded portion is provided with an external thread;

[0011] The bat body comprises a straight cylindrical portion with equal diameters in the axial direction at the upper part, and an internal thread is arranged on the inner surface of the straight cylindrical portion of the barrel. The external thread and the internal thread form a thread engagement structure so that the end cap is coaxially connected to the bat body; and

[0012] The shock control layer is arranged between the outer thread and the inner thread.

[0013] The external thread and the internal thread form a threaded meshing structure so that the end cap is coaxially connected to the bat body, thereby improving the firmness of the connection between the end cap and the bat body. The shock control layer is arranged between the external thread and the internal thread, and has a better vibration transmission ability. When the bat collides, the impact generated is preferentially transmitted along the shock control layer to the end cap of the bat, avoiding the vibration from being transmitted along the baseball body to the grip, thereby reducing the vibration of the bat grip and improving the hand comfort of the player when hitting the ball. At the same time, the shock control layer has a better shock absorption ability. During the vibration transmission along the end cap of the bat, the vibration is gradually absorbed by the shock control layer material, and the shock control layer is in a threaded shape, so the vibration is further reduced when it is transmitted between the threads, further improving the hand comfort of the player when hitting the ball.

[0014] Preferably, the seismic control layer satisfies one of the following conditions:

[0015] The shock control layer is arranged on a part or all of the outer peripheral wall of the threaded portion of the end cap;

[0016] The shock control layer is arranged on part or all of the outer peripheral wall of the end cap threaded portion and part or all of the inner peripheral wall of the end cap threaded portion.

[0017] The larger the coverage area of ​​the shock-control layer on the inner and outer peripheral walls of the end cap threaded portion, the better the shock transmission speed and shock absorption effect.

[0018] Preferably, the end cap further comprises a top portion, the top portion being located at an end of the threaded portion away from the bat body, and the shock control layer satisfies one of the following conditions:

[0019] The shock control layer is arranged on part or all of the upper surface of the top of the end cap;

[0020] The shock control layer is arranged on part or all of the upper surface and part or all of the lower surface of the top of the end cap.

[0021] The larger the coverage area of ​​the shock-control layer on the upper and lower surfaces of the end cap top, the better the shock transmission speed and shock absorption effect.

[0022] Preferably, the upper surface and the lower surface of the top of the end cap and the inner peripheral wall of the threaded portion are all provided with thread-like patterns.

[0023] The upper and lower surfaces of the top of the end cap and the inner wall of the threaded part are all provided with threaded patterns, and then the shock-control layer is prepared by dipping or spraying, so that the shock-control layer has a threaded shape. The vibration is further reduced when it is transmitted through the threaded shock-control layer, further improving the hand comfort of the player when hitting the ball.

[0024] Preferably, the bat body further comprises a cylindrical cone portion extending from the lower end of the straight cylindrical portion and having an axial outer diameter gradually reduced, and a grip portion extending from the lower end of the cylindrical cone portion and having an axially equal diameter.

[0025] Preferably, the grip also includes a shock absorbing layer, and the shock absorbing layer is located on the outer peripheral surface of the grip. The shock absorbing layer has a relatively good shock absorption capacity. When the bat hits, most of the impact is transmitted along the shock control layer to the end cap of the bat, and a small amount is transmitted along the baseball body to the grip. A small amount of vibration transmitted along the baseball body to the grip is absorbed again by the shock absorbing layer, thereby further reducing the vibration of the bat grip and improving the hand comfort of the player when hitting the ball.

[0026] Preferably, the shock control layer material or the shock absorption layer material comprises the following components in parts by weight:

[0027]

[0028] Preferably, the accelerator is selected from any one of N-cyclohexyl-2-benzothiazole sulfenamide, zinc dimethyldithiocarbamate, and n-butyl zinc xanthate.

[0029] Preferably, the curing agent is selected from any one of dicyandiamide, diethylenetriamine and triethylenetetramine.

[0030] Preferably, the shock-control layer material or the shock-absorbing layer material is prepared through a dipping or spraying process to form the shock-control layer or the shock-absorbing layer.

[0031] (III) Beneficial effects

[0032] The present invention provides a threaded shock-absorbing baseball bat. Compared with the prior art, it has the following beneficial effects:

[0033] A threaded shock-absorbing baseball bat comprises an end cap, a bat body and a shock-controlling layer, wherein the end cap comprises a threaded portion, an outer peripheral wall of the threaded portion is provided with an external thread, the bat body comprises an upper straight cylindrical portion with equal diameters along the axial direction, an internal thread is provided on the inner surface of the straight cylindrical portion, and the external thread and the internal thread form a threaded meshing structure so that the end cap is coaxially connected to the bat body, thereby improving the firmness of the connection between the end cap and the bat body, thereby ensuring that the end cap can be firmly connected to the bat during the batting process. The shock-control layer is arranged between the outer thread and the inner thread. The shock-control layer has better vibration transmission ability. When the bat collides, the impact generated is preferentially transmitted along the shock-control layer to the end cap of the bat, avoiding the vibration from being transmitted along the baseball body to the grip, thereby reducing the vibration of the grip of the bat and improving the hand comfort of the player when hitting the ball. At the same time, the shock-control layer has better shock-absorbing ability. In the process of vibration transmission along the end cap of the bat, the vibration is gradually absorbed by the shock-control layer material, and the shock-control layer is in a threaded shape. The vibration is further reduced when it is transmitted between the threads, further improving the hand comfort of the player when hitting the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a schematic diagram of the appearance structure of embodiment 1 of the present invention;

[0036] Figure 2 It is a schematic diagram of the decomposed structure of Embodiment 1 of the present invention;

[0037] Figure 3 is a schematic diagram of the cross-sectional structure of embodiment 1 of the present invention after assembly;

[0038] Figure 4 The present invention Figure 3 A is a magnified schematic diagram of the local structure;

[0039] Figure 5 is a schematic diagram of the appearance structure of embodiment 3 of the present invention;

[0040] In the figure, 10, baseball body; 11, straight tube; 12, conical part; 13, grip; 14, shock absorbing layer; 20, end cap; 21, top; 22, threaded part; 23, shock control layer. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Example 1

[0044] Combination Figure 1-4 As shown, this is Example 1 of the present invention:

[0045] A threaded shock-absorbing bat comprises a bat body 10 with openings at the upper and lower ends and an end cap 20 with an opening at the lower end. The end cap 20 comprises a top 21 and a threaded portion 22, the top 21 and the threaded portion 22 are integrally formed and made of carbon fiber material, and an external thread is provided on the outer peripheral wall of the threaded portion 22. The bat body 10 comprises a straight barrel portion 11 of equal diameter along the axial direction at the upper part, a cylindrical cone portion 12 extending from the lower end of the straight barrel portion 11 and gradually reducing the outer diameter along the axial direction, and a grip portion 13 extending from the lower end of the cylindrical cone portion 12 and equal diameter along the axial direction. An internal thread is provided on the inner surface of the straight barrel portion 11, and the external thread of the threaded portion 22 and the internal thread of the straight barrel portion 11 form a threaded meshing structure so that the end cap 20 is coaxially connected to the bat body 10, thereby improving the firmness of the connection between the end cap 20 and the bat body 10.

[0046] The end cap 20 also includes a shock control layer 23, which completely covers the outer circumferential wall and the inner circumferential wall of the threaded portion 22, and completely covers the upper surface and the lower surface of the top 21, and the shock control layer 23 is in a threaded shape at the threaded portion 22. The shock control layer 23 has a relatively good vibration transmission ability. When the bat hits, the impact generated is preferentially transmitted along the shock control layer 23 to the end cap 20 of the bat, avoiding the vibration from being transmitted along the baseball body 10 to the grip 13, thereby reducing the vibration of the grip 13 of the bat and improving the hand comfort of the player when hitting the ball. The shock control layer 23 also has a relatively good shock absorption ability. During the vibration transmission along the end cap 20 of the bat, the vibration is gradually absorbed by the material of the shock control layer 23, and the shock control layer 23 is in a threaded shape at the threaded portion 22, so the vibration is further reduced when it is transmitted between the threads.

[0047] The shock-control material for preparing the shock-control layer 23 includes the following components in parts by weight:

[0048]

[0049] The vibration control material is prepared according to the following steps: according to the above proportion, bisphenol A epoxy resin is added to acetone and diluted to a certain concentration, isocyanate-based liquid rubber and epoxy-terminated liquid nitrile rubber are mixed evenly to prepare a mixed rubber liquid, and then the diluted bisphenol A epoxy resin is added to the mixed rubber liquid to prepare an epoxy / rubber mixture, KH-560 is added to the epoxy / rubber mixture, and stirred evenly, and then dicyandiamide and N-cyclohexyl-2-benzothiazolesulfonamide are added, and stirred evenly to obtain a vibration control material solution, and its viscosity is tested to be 120mpa.s.

[0050] The shock control material solution is sprayed on the inner and outer surfaces of the carbon fiber end cap 20 blank to form a shock control adhesive film, which is then cured at 140° C. for 60 minutes to prepare a shock control layer 23 on the end cap 20 blank. The thickness of the shock control layer 23 is 0.1 cm.

[0051] The shock control material solution was cured at 150℃ for 100 minutes to make a cylindrical specimen with a standard size of 12.5mm×29mm, and its dynamic and static stiffness ratio was tested. First, the dynamic and static stiffness of the material was tested using the MTS elastomer testing system. Static stiffness test conditions: at 25℃, statically load 500N and then unload, stay for 1min and repeat twice, then load at a uniform speed of 5N / s, when loaded to 150N and 350N, stay for 30s and record the displacement, and the ratio of the load difference to the displacement difference is used as the static stiffness; dynamic stiffness test conditions: at 25℃, the load is 150N and the frequency is 4Hz, and the cycle is 1000 times. The data when the load is 350N and 150N are used, and the ratio of the load difference to the displacement difference is used as the dynamic stiffness. The ratio of dynamic stiffness to static stiffness is the dynamic and static stiffness ratio.

[0052] Damping performance test method: The cured vibration control material is tested by DMTS, using a tensile mode, a test temperature of -80 to 80°C, a heating rate of 3°C / min, a deformation of 0.25%, and a frequency of 10 Hz.

[0053] The test results of the damping coefficient and dynamic-static stiffness ratio of the seismic control material are shown in Table 1.

[0054] Example 2

[0055] Combination Figure 1 As shown, this is Embodiment 2 of the present invention:

[0056] A threaded shock-absorbing bat comprises an end cap 20 with an opening at the lower end and a bat body 10 with openings at the upper and lower ends. The end cap 20 comprises a top 21 and a threaded portion 22, the top 21 and the threaded portion 22 are integrally formed and made of carbon fiber material, the outer peripheral wall of the threaded portion 22 is provided with threads, and the upper and lower surfaces of the top 21 and the inner peripheral wall of the threaded portion 22 are provided with thread-like patterns. The bat body 10 comprises a straight barrel portion 11 of equal diameter along the axial direction at the upper part, a cylindrical vertebral portion 12 extending from the lower end of the straight barrel portion 11 and gradually reducing the outer diameter along the axial direction, and a gripping portion 13 extending from the lower end of the cylindrical vertebral portion 12 and equal diameter along the axial direction. An internal thread is provided on the inner surface of the straight barrel portion 11, and the external thread of the threaded portion 22 forms a threaded meshing structure with the internal thread of the straight barrel portion 11 of the barrel so that the end cap 20 is coaxially connected to the bat body 10, thereby improving the firmness of the connection between the end cap 20 and the bat body 10.

[0057] The end cap 20 also includes a shock-control layer 23, which completely covers the outer circumferential wall and the inner circumferential wall of the threaded portion 22, and completely covers the upper surface and the lower surface of the top portion 21, and the shock-control layer 23 is in a threaded shape. The shock-control layer 23 has a relatively good vibration transmission capability. When the bat hits, the impact generated is preferentially transmitted along the shock-control layer 23 to the end cap 20 of the bat, preventing the vibration from being transmitted along the main body of the baseball to the grip 13, thereby reducing the vibration of the grip 13 of the bat and improving the hand comfort of the player when hitting the ball. The shock-control layer 23 has a relatively good shock-absorbing capability. During the vibration transmission along the end cap 20 of the bat, the vibration is gradually absorbed by the material of the shock-control layer 23, and the shock-control layer 23 is in a threaded shape, so the vibration is further reduced when it is transmitted between the threads.

[0058] The shock-control material for preparing the shock-control layer 23 includes the following components in parts by weight:

[0059]

[0060] The preparation method of the vibration control material is the same as that of Example 1, and its viscosity is tested to be 180 mPa.s.

[0061] The integrally formed carbon fiber end cap blank is immersed in a shock control material solution to form a shock control film, and then cured at 145°C for 80 minutes to prepare a shock control layer with a thickness of 0.3 cm. The shock control layer is in a threaded shape, and when the bat is hit, an impact is generated. The vibration is weakened and rebounded during the transmission between the threads of the shock control layer 23, reducing the vibration of the bat grip 13 and improving the hand comfort of the player when hitting the ball.

[0062] The test methods for the damping coefficient and dynamic-static stiffness ratio of the seismic control material are the same as those in Example 1. The test results are shown in Table 1.

[0063] Example 3

[0064] Combination Figure 1-5 As shown, this is Embodiment 3 of the present invention:

[0065] A threaded shock-absorbing bat comprises an end cap 20 with an opening at the lower end and a bat body 10 with openings at the upper and lower ends. The end cap 20 comprises a top 21 and a threaded portion 22, the top 21 and the threaded portion 22 are integrally formed and made of carbon fiber material, the outer peripheral wall of the threaded portion 22 is provided with threads, and the upper and lower surfaces of the top 21 and the inner peripheral wall of the threaded portion 22 are provided with thread-like patterns. The bat body 10 comprises a straight barrel portion 11 of equal diameter along the axial direction at the upper part, a cylindrical vertebral portion 12 extending from the lower end of the straight barrel portion 11 and gradually reducing the outer diameter along the axial direction, and a gripping portion 13 extending from the lower end of the cylindrical vertebral portion 12 and equal diameter along the axial direction. An internal thread is provided on the inner surface of the straight barrel portion 11 of the barrel, and the external thread of the threaded portion 22 of the end cap 20 and the internal thread of the straight barrel portion 11 of the barrel form a threaded meshing structure so that the end cap 20 is coaxially connected to the bat body 10, thereby improving the firmness of the connection between the end cap 20 and the bat body 10.

[0066] The end cap 20 also includes a shock-control layer 23, which completely covers the outer circumferential wall and the inner circumferential wall of the threaded portion 22, and completely covers the upper surface and the lower surface of the top portion 21, and the shock-control layer 23 is in a threaded shape. The shock-control layer 23 has a relatively good vibration transmission capability. When the bat hits, the impact generated is preferentially transmitted along the shock-control layer 23 to the end cap 20 of the bat, preventing the vibration from being transmitted along the main body of the baseball to the grip 13, thereby reducing the vibration of the grip 13 of the bat and improving the hand comfort of the player when hitting the ball. The shock-control layer 23 has a relatively good shock-absorbing capability. During the vibration transmission along the end cap 20 of the bat, the vibration is gradually absorbed by the material of the shock-control layer 23, and the shock-control layer 23 is in a threaded shape, so the vibration is further reduced when it is transmitted between the threads.

[0067] The grip 13 further includes a shock absorbing layer 14, which is coated on the outer peripheral surface of the grip 13. The shock absorbing layer 14 has a relatively good shock absorption capability. When the bat hits, most of the impact is transmitted along the shock control layer 23 to the end cap 20 of the bat, and a small amount is transmitted along the main body of the baseball to the grip 13. The small amount of vibration transmitted along the main body of the baseball to the grip 13 is further absorbed by the shock absorbing layer 14, thereby further reducing the vibration feeling of the bat grip 13 and improving the hand comfort of the player when hitting the ball.

[0068] The shock absorbing material for the shock absorbing layer and the shock controlling material for the shock controlling layer include the following components in parts by weight:

[0069]

[0070] The preparation method of the vibration absorbing material and the vibration controlling material is the same as that of Example 1, and the viscosity thereof is tested to be 200 mPa.s.

[0071] The integrally formed carbon fiber end cap blank is immersed in a shock control material solution to form a shock control film, and then cured at 150° C. for 100 minutes to prepare a shock control layer with a thickness of 0.5 cm. The shock control layer is in a threaded shape, and when the bat is hit, an impact is generated. The vibration is weakened and rebounded during the transmission between the threads of the shock control layer 23, reducing the vibration of the bat grip 13 and improving the hand comfort of the player when hitting the ball.

[0072] The bat grip 13 is immersed in a shock-control material solution to form a shock-absorbing film, which is then cured at 150° C. for 100 minutes to prepare a shock-absorbing layer 14 having a thickness of 0.5 cm.

[0073] The test methods for the damping coefficient and dynamic-static stiffness ratio of the seismic control material and the seismic absorption material are the same as those in Example 1. The test results are shown in Table 1.

[0074] Comparative Example 1

[0075] The difference between this comparative example and Example 1 is that the vibration control material component does not include isocyanate-based liquid rubber, wherein the terminal epoxy liquid nitrile rubber is 77.8 parts, and the bisphenol A type epoxy resin is 22.2 parts. The rest is the same as Example 1.

[0076] Comparative Example 2

[0077] The difference between this comparative example and Example 1 is that the vibration control material component does not include terminal epoxy liquid nitrile rubber, wherein the isocyanate liquid rubber is 33.3 parts, and the bisphenol A type epoxy resin is 66.7 parts. The rest is the same as Example 1.

[0078] Comparative Example 3

[0079] The difference between this comparative example and Example 1 is that the vibration control material component does not include bisphenol A epoxy resin, wherein 12.5 parts of isocyanate-based liquid rubber and 87.5 parts of terminal epoxy-based liquid nitrile rubber are included, and the rest is the same as Example 1.

[0080] Table 1 Test results of seismic control material performance of Examples 1-3 and Comparative Examples 1-3

[0081] Damping coefficient Dynamic-static stiffness ratio Example 1 0.9 1.2 Example 2 1.0 1.3 Example 3 1.1 1.2 Comparative Example 1 0.5 1.6 Comparative Example 2 0.4 1.7 Comparative Example 3 0.5 1.8

[0082] As can be seen from Table 1, the dynamic-static stiffness ratio of the shock-control material prepared in Examples 1-3 is close to 1, so the material has a better vibration transmission ability. When the bat is hit, an impact is generated, and the impact vibration is preferentially transmitted along the shock-control layer to the baseball cap, avoiding the vibration from being transmitted along the baseball body to the grip, thereby reducing the vibration of the bat grip and improving the hand comfort of the player when hitting the ball. The shock-control material prepared in Examples 1-3 has a high damping coefficient. During the process of vibration being transmitted along the shock-control layer to the baseball cap, the vibration is gradually absorbed by the shock-control layer. In addition, the shock-control layer is in a threaded shape, which can further reduce the vibration.

[0083] According to Example 1 and Comparative Examples 1-3, under the same dosage, the shock-absorbing effect and vibration transmission ability of the shock-controlled material prepared by using isocyanate-based liquid rubber, epoxy-terminated liquid nitrile rubber and bisphenol A epoxy resin in a mass ratio of 5-10:50-70:10-20 are better. Therefore, isocyanate-based liquid rubber, epoxy-terminated liquid nitrile rubber and bisphenol A epoxy resin have a synergistic effect in improving the shock-absorbing effect and vibration transmission ability of the shock-controlled material.

[0084] The rebound coefficient of the bats prepared in Examples 1-3 was tested. The test method was as follows: a baseball was fired from a pitching machine to hit the bat. The bat was hit by the ball and the ball bounced out. The flight speed of the test ball was the rebound value.

[0085] Table 2 Performance data of the bats prepared in Examples 1-3

[0086] Bomb rebound coefficient (MPH) Example 1 115 Example 2 110 Example 3 120

[0087] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A threaded shock-absorbing baseball bat, characterized in that: include: An end cap, comprising a threaded portion, wherein an outer peripheral wall of the threaded portion is provided with an external thread; The bat body comprises a straight cylindrical portion with equal diameter in the axial direction at the upper part, and an internal thread is arranged on the inner surface of the straight cylindrical portion of the cylindrical body, and The shock control layer is arranged between the outer thread and the inner thread.

2. The threaded shock-absorbing baseball bat according to claim 1, characterized in that: The seismic control layer meets one of the following conditions: The shock control layer is arranged on a part or all of the outer peripheral wall of the threaded part of the end cap; The shock control layer is arranged on part or all of the outer peripheral wall of the end cap threaded portion and part or all of the inner peripheral wall of the end cap threaded portion.

3. The threaded shock-absorbing baseball bat according to claim 1, wherein: The end cap further includes a top portion, the top portion being located at the end of the threaded portion away from the end of the bat body, and the shock control layer satisfies one of the following conditions: The shock control layer is arranged on part or all of the upper surface of the top of the end cap; The shock control layer is arranged on part or all of the upper surface and part or all of the lower surface of the top of the end cap.

4. The threaded shock-absorbing baseball bat according to claim 3, characterized in that: The upper surface and the lower surface of the top of the end cap and the inner peripheral wall of the threaded part are all provided with thread-like patterns.

5. The threaded shock-absorbing baseball bat according to claim 1, wherein: The bat body also includes a cylindrical cone portion extending from the lower end of the straight cylindrical portion and gradually reducing its outer diameter in the axial direction, and a gripping portion extending from the lower end of the cylindrical cone portion and having a constant diameter in the axial direction.

6. The threaded shock-absorbing baseball bat according to claim 5, characterized in that: The gripping portion further comprises a shock absorbing layer, and the shock absorbing layer is located on the outer peripheral surface of the gripping portion.

7. The threaded shock-absorbing ball bat according to claim 1 or 6, characterized in that: The material of the shock-control layer or the material of the shock-absorbing layer includes the following components in parts by weight:

8. The threaded shock-absorbing baseball bat according to claim 7, wherein: The accelerator is selected from any one of N-cyclohexyl-2-benzothiazole sulfenamide, zinc dimethyldithiocarbamate, and n-butyl zinc xanthate.

9. The threaded shock-absorbing baseball bat according to claim 7, wherein: The curing agent is selected from any one of dicyandiamide, diethylenetriamine and triethylenetetramine.

10. The threaded shock-absorbing ball bat according to claim 7, wherein: The shock-control layer material or the shock-absorbing layer material is prepared through a dipping or spraying process to form a shock-control layer or a shock-absorbing layer.

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