Tennis racket bending characteristic and stability testing device

Abstract

The utility model discloses a tennis racket bending characteristic and stability testing device, and belongs to the technical field of testing devices. A tennis racket bending characteristic and stability testing device comprises a bottom plate provided with a clamping device, a gun carriage and a filling device, and further comprises a folded plate installed on the bottom plate through a support; wherein the folded plate is connected with a box body through a first damping piece, and the box body is connected with a shell through a second damping piece; a high-speed camera is mounted on the shell; through cooperation of the damper A and the first damping spring, transverse oscillation impact force can be absorbed and released, and through cooperation of the second damping spring and the second damping spring, longitudinal oscillation impact force can be absorbed and released, so that the vibration amplitude of the high-speed camera can be reduced, and the service life of the high-speed camera is prolonged. The shooting stability of the high-speed camera in the testing process can be greatly improved, and therefore the tennis racket testing accuracy of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a device for testing the bending characteristics and stability of a tennis racket. Background Art

[0002] A tennis racket is an instrument used to hit tennis balls, usually consisting of a tennis racket blade and a tennis racket handle. The tennis racket blade is usually made of materials such as wood, aluminum alloy, carbon fiber, etc., and has a certain degree of elasticity and durability. Currently, when testing the bending characteristics and stability of a tennis racket, a tennis racket bending characteristics and stability testing device is required.

[0003] For example, the existing Chinese patent application number: CN202320630620.8 discloses a device for testing the bending characteristics and stability of a tennis racket. The solution includes a support device, a clamping device is provided on the left side of the upper end of the support device, and a filling device is provided on the right side of the upper end of the support device. The clamping device includes a box body, and a motor is fixedly connected to the lower side of the front end of the box body. The test device is placed in the middle of the box body, and the motor is started. The motor drives the screw to rotate, and the screw drives the clamping plate to clamp the grip of the tennis racket. The electric push rod is started, and the electric push rod drives the pressure plate to move toward the tennis racket. At the same time, the side pressure plate is compressed to clamp the grip of the tennis racket, increasing the clamping force, so that the test device can adapt to different sizes of tennis racket grips and improve the test efficiency.

[0004] However, the above solution still has some shortcomings. Although it makes it easy for the test device to adapt to different sizes of tennis racket grips and improves the test efficiency, in the actual test process, the tennis ball is launched through the gun mount to make the tennis ball hit the tennis racket, and the force process of the tennis racket is recorded by the high-speed camera, so as to facilitate the analysis of the bending characteristics and stability of the tennis racket. However, since the high-speed camera is installed on the pillar, the tennis racket is also installed on the pillar through the clamping device. When the tennis racket is hit by the high-speed tennis ball, the device will generate a certain oscillating impact force. The generated impact force will be transmitted to the high-speed camera through the pillar and the base, causing it to vibrate to a certain amplitude, resulting in insufficient stability of the high-speed camera shooting, thereby reducing the accuracy of the device's test of the tennis racket. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the high-speed camera of the current testing device is prone to vibration during the testing of the tennis racket, resulting in unstable shooting, thereby reducing the accuracy of the device in testing the tennis racket. A tennis racket bending characteristic and stability testing device is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for testing the bending characteristics and stability of a tennis racket comprises a base plate mounted with a clamping device, a gun mount, and a filling device, and also comprises a folding plate mounted on the base plate via a bracket; wherein the folding plate is connected to a box body via a first shock-absorbing member, and the box body is connected to a shell via a second shock-absorbing member; a high-speed camera is mounted on the shell, and when testing a tennis racket, the first and second shock-absorbing members are used to reduce the vibration amplitude of the high-speed camera.

[0008] In order to weaken the lateral impact force exerted on the high-speed camera, preferably, the first shock-absorbing component includes: two groups of laterally arranged dampers A, which are respectively fixedly connected to both sides of the folding plate; wherein, a first shock-absorbing spring is fixedly mounted on the damper A, the box body is fixedly connected to the opposite ends of the two groups of dampers A, and the end of the first shock-absorbing spring away from the folding plate is fixedly connected to the box body.

[0009] In order to weaken the longitudinal impact force exerted on the high-speed camera, preferably, the second shock-absorbing component includes: two groups of longitudinally arranged dampers B, both of which are fixedly connected to the box body; wherein, a first shock-absorbing spring is installed on the damper B, the shell is fixedly connected to the top of the damper B, and the top of the first shock-absorbing spring is fixedly connected to the bottom of the shell.

[0010] In order to facilitate the rapid disassembly and assembly of the high-speed camera, preferably, both sides of the interior of the shell are slidably connected with straight plates, and a compression spring is fixedly installed on one side of the straight plate; the other side of the straight plate is fixedly connected with an insertion block, and the end of the compression spring away from the straight plate is fixedly connected to the inner wall of the shell; L-shaped movable grooves are penetrated on both sides of the top of the shell, and a pull plate is slidably connected to the top of the straight plate, and the pull plate is slidably connected in the movable groove; the bottom of the high-speed camera is fixedly connected with an insertion plate, and the insertion block is inserted into the through opening of the insertion plate.

[0011] In order to improve the operating convenience of the tester, further, the two plug blocks are both wedge-shaped, and when the wedge-shaped surfaces of the two plug blocks are squeezed by external force, the two plug blocks move away from each other.

[0012] In order to improve the stability of the box body, preferably, a guide groove is opened on the surface of the folding plate, and a guide block is fixedly connected to the bottom of the box body, and the guide block is slidably connected in the guide groove.

[0013] Compared with the prior art, the present invention provides a device for testing the bending characteristics and stability of a tennis racket, which has the following beneficial effects:

[0014] 1. This tennis racket bending characteristics and stability testing device, when the tennis racket is hit by a high-speed tennis ball, causing the device to generate an oscillating impact force, can absorb and release the lateral oscillating impact force through the damper A and the first shock-absorbing spring, thereby significantly reducing the vibration amplitude of the high-speed camera. Furthermore, the second shock-absorbing spring and the second shock-absorbing spring can absorb and release the longitudinal oscillating impact force, further reducing the vibration amplitude of the high-speed camera, and can significantly improve the shooting stability of the high-speed camera during the test process, thereby improving the accuracy of the device's tennis racket testing, and facilitating better analysis of the bending characteristics and stability of the tennis racket.

[0015] 2. The tennis racket bending characteristics and stability testing device, through the coordinated use of compression springs, straight plates, plug blocks, plug plates, and pull plates, can facilitate the testers to quickly disassemble and assemble the high-speed camera, thereby facilitating the rapid inspection and maintenance of the high-speed camera.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model solves the problem that the high-speed camera of the current testing device is prone to vibration during the test of the tennis racket, resulting in its shooting being unstable, thereby reducing the accuracy of the device in testing the tennis racket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the first-perspective axonometric structure of a tennis racket bending characteristics and stability testing device proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the axonometric structure from a second perspective of a device for testing the bending characteristics and stability of a tennis racket proposed in the present invention;

[0019] Figure 3 This is a schematic diagram of the partial axonometric structure of a tennis racket bending characteristics and stability testing device proposed in this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the folding plate structure of a tennis racket bending characteristics and stability testing device proposed by the present invention;

[0021] Figure 5 This is a schematic diagram of the box structure of a tennis racket bending characteristics and stability testing device proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the partial axonometric structure of a tennis racket bending characteristics and stability testing device proposed in this utility model. Figure 2 ;

[0023] Figure 7This is a schematic diagram of the cross-sectional structure of the shell of a tennis racket bending characteristics and stability testing device proposed by the present invention;

[0024] Figure 8 The present invention is a schematic diagram of an insert structure of a device for testing the bending characteristics and stability of a tennis racket.

[0025] In the figure: 1. Base plate; 2. Clamping device; 3. Folding plate; 4. Box body; 41. Damper A; 42. First shock-absorbing spring; 5. Shell; 51. Damper B; 52. Second shock-absorbing spring; 6. High-speed camera; 71. Compression spring; 72. Straight plate; 73. Insert block; 74. Insert plate; 75. Moving groove; 76. Pull plate; 8. Guide groove; 9. Guide block; 10. Gun mount; 11. Filling device. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] Example:

[0029] Reference Figures 1-8 An embodiment of the utility model provides a device for testing the bending characteristics and stability of a tennis racket, comprising a base plate 1 on which a clamping device 2, a gun mount 10 and a filling device 11 are installed, and further comprising: a folding plate 3, which is installed on the base plate 1 through a bracket; wherein, the folding plate 3 is connected to a box body 4 through a first shock-absorbing member, and the box body 4 is connected to a shell 5 through a second shock-absorbing member; a high-speed camera 6 is installed on the shell 5, and when testing the tennis racket, the first shock-absorbing member and the second shock-absorbing member are used to weaken the vibration amplitude of the high-speed camera 6, and an opening is provided on the top of the shell 5 to facilitate the installation of the high-speed camera 6.

[0030] Specifically, by using the first shock-absorbing member and the second shock-absorbing member in conjunction with each other, the oscillating impact force generated during the test can be absorbed and released, thereby greatly reducing the vibration amplitude of the high-speed camera 6 and preventing the high-speed camera 6 from being unstable during the test, thereby improving the accuracy of the device's test of the tennis racket.

[0031] The first shock-absorbing component includes: two groups of laterally arranged dampers A41, which are respectively fixedly connected to the two sides of the folding plate 3; wherein, the first shock-absorbing spring 42 is fixedly installed on the damper A41, the box body 4 is fixedly connected to the opposite ends of the two groups of dampers A41, and the end of the first shock-absorbing spring 42 away from the folding plate 3 is fixedly connected to the box body 4.

[0032] Specifically, during the test, the damper A41 and the first shock-absorbing spring 42 cooperate to absorb and release the lateral oscillation impact force, thereby greatly reducing the vibration amplitude of the high-speed camera 6.

[0033] The second shock-absorbing component includes two groups of longitudinally arranged dampers B51, both of which are fixedly connected to the box body 4; wherein, the damper B51 is installed with a first shock-absorbing spring 42, the shell 5 is fixedly connected to the top of the damper B51, and the top of the first shock-absorbing spring 42 is fixedly connected to the bottom of the shell 5.

[0034] Specifically, during the test, the cooperation between the second shock-absorbing spring 52 and the second shock-absorbing spring 52 can absorb and release the longitudinal oscillation impact force, thereby further reducing the vibration amplitude of the high-speed camera 6.

[0035] Both sides of the shell 5 are slidably connected with straight plates 72, and a compression spring 71 is fixedly installed on one side of the straight plate 72; an insert block 73 is fixedly connected to the other side of the straight plate 72, and the end of the compression spring 71 away from the straight plate 72 is fixedly connected to the inner wall of the shell 5; L-shaped movable grooves 75 are opened on both sides of the top of the shell 5, and a pull plate 76 is slidably connected to the top of the straight plate 72, and the pull plate 76 is slidably connected in the movable groove 75; the bottom of the high-speed camera 6 is fixedly connected with an insert plate 74, and the insert block 73 is inserted into the through opening of the insert plate 74.

[0036] Specifically, when installing the high-speed camera 6, the high-speed camera 6 can be placed on the top of the housing 5, so that the plug plate 74 at the bottom of the high-speed camera 6 is inserted into the interior of the housing 5, and the plug plate 74 is used to squeeze the wedge-shaped surface of the plug block 73, so that the plug blocks 73 on both sides move away from each other, and drive the straight plate 72 to move together, and at the same time compress the compression spring 71. During the downward movement of the plug plate 74, when the plug block 73 is aligned with the through-hole of the plug plate 74, the elastic force of the compression spring 71 causes the plug block 73 to be quickly inserted into the through-hole of the plug plate 74, thereby The high-speed camera 6 can be quickly installed and fixed, and when the high-speed camera 6 needs to be disassembled, when the pull plate 76 is pushed to slide in the movable groove 75, it drives the straight plate 72 and the plug block 73 to move, so that the plug block 73 is separated from the opening of the plug plate 74, thereby quickly releasing the fixation of the high-speed camera 6, so that the high-speed camera 6 can be quickly disassembled. In addition, through the L-shaped design of the movable groove 75, the pull plate 76 can be stuck in the bend of the movable groove 75 to prevent the plug block 73 from automatically rebounding, so that the tester can remove the high-speed camera 6.

[0037] The two inserting blocks 73 are both wedge-shaped. When the wedge-shaped surfaces of the two inserting blocks 73 are squeezed by external force, the two inserting blocks 73 move away from each other.

[0038] Specifically, the wedge-shaped design can facilitate testers to quickly install the high-speed camera 6 .

[0039] A guide groove 8 is formed on the surface of the folding plate 3 , and a guide block 9 is fixedly connected to the bottom of the box body 4 , and the guide block 9 is slidably connected in the guide groove 8 .

[0040] Specifically, the provision of the guide groove 8 and the guide block 9 can provide auxiliary support to the box body 4, thereby improving its stability during use.

[0041] Working Principle: During use, the tennis racket bending characteristics and stability tester secures the tennis racket to the device via the clamping device 2. A tennis ball is then transported into the gun carriage 10 via the filling device 11. The gun carriage 10 then launches the tennis ball, causing it to impact the racket. The high-speed camera 6 records the force applied to the racket, facilitating analysis of the racket's bending characteristics and stability.

[0042] On the other hand, during the test of the tennis racket, when the tennis racket is hit by a tennis ball at high speed, causing the device to generate an oscillating impact force, the generated impact force will be transmitted to the folding plate 3, the box body 4 and the high-speed camera 6 through the bracket. At this time, through the cooperation of the damper A41 and the first shock-absorbing spring 42, the lateral oscillating impact force can be absorbed and released, thereby greatly reducing the vibration amplitude of the high-speed camera 6, and through the cooperation of the second shock-absorbing spring 52 and the second shock-absorbing spring 52, the longitudinal oscillating impact force can be absorbed and released, thereby further reducing the vibration amplitude of the high-speed camera 6, which can greatly improve the shooting stability of the high-speed camera 6 during the test, thereby improving the accuracy of the device's test of the tennis racket, so as to better analyze the bending characteristics and stability of the tennis racket.

[0043] It should be noted that the clamping device 2, high-speed camera 6, gun mount 10 and filling device 11 in this solution are all existing public technologies in the comparative document. For specific usage, please refer to the comparative document "CN202320630620.8" of this solution. No further details will be given here.

[0044] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing the bending characteristics and stability of a tennis racket, comprising a base plate (1) equipped with a clamping device (2), a gun mount (10) and a filling device (11), characterized in that: Also includes: A folding plate (3) is mounted on the base plate (1) via a bracket; The folding plate (3) is connected to a box body (4) via a first shock-absorbing member, and the box body (4) is connected to a housing (5) via a second shock-absorbing member. A high-speed camera (6) is mounted on the housing (5); when testing a tennis racket, the first shock-absorbing member and the second shock-absorbing member are used to weaken the vibration amplitude of the high-speed camera (6).

2. A tennis racket bending characteristics and stability testing device according to claim 1, characterized in that: The first shock absorbing member comprises: Two groups of transversely arranged dampers A (41) are respectively fixedly connected to both sides of the folding plate (3); The damper A (41) is fixedly mounted with a first damping spring (42), the box body (4) is fixedly connected to the opposite ends of the two groups of dampers A (41), and the end of the first damping spring (42) away from the folding plate (3) is fixedly connected to the box body (4).

3. A tennis racket bending characteristics and stability testing device according to claim 1, characterized in that: The second shock absorbing member comprises: Two groups of longitudinally arranged dampers B (51) are fixedly connected to the box body (4); The damper B (51) is provided with a first damping spring (42), the housing (5) is fixedly connected to the top of the damper B (51), and the top of the first damping spring (42) is fixedly connected to the bottom of the housing (5).

4. A tennis racket bending characteristics and stability testing device according to claim 1, characterized in that: Both sides of the interior of the housing (5) are slidably connected with straight plates (72), and a compression spring (71) is fixedly installed on one side of the straight plate (72); An insert block (73) is fixedly connected to the other side of the straight plate (72), and one end of the compression spring (71) away from the straight plate (72) is fixedly connected to the inner wall of the housing (5); L-shaped movable grooves (75) are provided on both sides of the top of the housing (5); a pull plate (76) is slidably connected to the top of the straight plate (72); and the pull plate (76) is slidably connected in the movable grooves (75); The bottom of the high-speed camera (6) is fixedly connected with an inserting plate (74), and the inserting block (73) is inserted into the through opening of the inserting plate (74).

5. A tennis racket bending characteristics and stability testing device according to claim 4, characterized in that: The two inserting blocks (73) are both wedge-shaped. When the wedge-shaped surfaces of the two inserting blocks (73) are squeezed by external force, the two inserting blocks (73) move away from each other.

6. A tennis racket bending characteristics and stability testing device according to claim 1, characterized in that: A guide groove (8) is provided on the surface of the folding plate (3), and a guide block (9) is fixedly connected to the bottom of the box body (4), and the guide block (9) is slidably connected in the guide groove (8).

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