Table tennis forehand learning teaching machine

Abstract

The application provides a table tennis forehand learning teaching machine applied to the field of sports teaching equipment, which comprises a control box fixed on the waist of a human body through a waistband, a mechanical device for controlling the range and action of the right arm swing, a pull wire device for monitoring the waist rotation range when the bat is swung, and a foot step sensor for measuring the foot movement position when the bat is swung. The mechanical device comprises a waist mechanism connected with the control box, a hand elbow mechanism connected with the waist mechanism, a small arm mechanism and a large arm mechanism connected with the hand elbow mechanism, and a wrist mechanism connected with the small arm mechanism. Through the bending and swinging restriction of the hand elbow, wrist, small arm and large arm, the muscle memory of the table tennis forehand swing is achieved through long-term practice, the practice efficiency of the table tennis forehand is improved, the market prospect is good, and the application is suitable for popularization and application.

Description

Technical Field

[0001] This application relates to the field of sports teaching equipment, and in particular to a table tennis forehand learning teaching machine. Background Technology

[0002] The forehand stroke in table tennis is a basic hitting motion, referring to the action of hitting the ball with the front of the racket. In table tennis matches, the forehand stroke is one of the most commonly used techniques and one of the basic techniques that beginners need to master.

[0003] Currently, when training beginners in table tennis, in order to learn the forehand attack, they generally observe the coach's demonstration of the forehand attack and then practice a lot of aerial swinging drills. However, because each trainee's learning and observation abilities are different, the essence of the movement they grasp by watching the coach's movements varies, resulting in poor learning and training effects. Therefore, there is an urgent need for a table tennis forehand learning teaching machine. Summary of the Invention

[0004] The purpose of this application is to solve the technical problem of poor efficiency in forehand practice for beginners in table tennis. Compared with the existing technology, it provides a table tennis forehand learning and teaching machine, which includes a control box fixed to the waist of the human body by a waist belt, a mechanical device for controlling the range and movement of the right arm swing, a pull wire device for monitoring the waist rotation amplitude during the swing, and a foot sensor for measuring the foot movement position during the swing. The mechanical device includes a waist mechanism connected to the control box, an elbow mechanism connected to the waist mechanism, a forearm mechanism and an upper arm mechanism connected to the elbow mechanism, and a wrist mechanism connected to the forearm mechanism.

[0005] The wrist mechanism is used to limit the range of motion of the wrist, the upper arm mechanism is used to limit the range of motion of the upper arm, the forearm mechanism is used to limit the range of motion of the forearm, and the elbow mechanism works in conjunction with the waist mechanism to limit the swing amplitude of the entire arm holding the racket during the swing.

[0006] Furthermore, the top of the control box is equipped with a control screen, and the foot sensor is in the form of a U-shaped retainer. There are two foot sensors, which are respectively attached to the user's shoes. The foot sensors communicate with the control screen via a wireless transmission protocol.

[0007] Furthermore, the cable pulling device is fixed to the user's right leg side, and the control box is equipped with a cable feeding device. A traction cable is connected between the cable feeding device and the cable pulling device. The cable feeding device uses a motor to wind up the traction cable and sends the length data of the released traction cable back to the control screen through the motor.

[0008] Furthermore, the waist mechanism includes a piston valve installed in the control box, an extension rod inserted inside the piston valve, a ball valve fixed to the outer wall of one end of the piston valve, a ball valve sleeve matching the ball valve fixed to one side of the control box via a fixed end block, a guide groove corresponding to the extension rod on the other side of the control box, two sets of pistons fixed on the extension rod, the pistons slidingly connected inside the piston valve, and a return spring installed inside the piston valve, the return spring having an elastic force that drives the entire mechanical device to move along the swing side;

[0009] The elbow mechanism includes an elbow limiting block, a large arm rotating block is fixed at the bottom of the elbow limiting block, a large arm limiting block is provided at the bottom of the large arm rotating block, the large arm rotating block is rotatably connected to the large arm limiting block, and the large arm limiting block is detachably connected to one end of the extension rod.

[0010] The upper arm mechanism includes an elbow rotating block that is rotatably connected to the top of the elbow limiting block, and an upper arm fixing block is fixed to the top of the elbow rotating block.

[0011] The forearm mechanism includes a forearm fixing block fixed to one side of the elbow limiting block, and the wrist mechanism includes a wrist limiting block. One end of the wrist limiting block is adjustablely connected to the forearm fixing block, and the other end of the wrist limiting block is rotatably connected to a wrist rotating block. One side of the wrist rotating block is fixed to the wrist fixing block.

[0012] Furthermore, the boom limiting block is provided with a boom limiting groove and a boom reset groove. The boom rotating block is connected to the boom limiting block by a boom positioning pin. The boom rotating block is also provided with a boom limiting pin that cooperates with the boom limiting groove and a boom sliding pin that cooperates with the boom reset groove. The boom reset groove is also provided with a boom guide rod. The boom sliding pin is slidably connected to the boom guide rod. A boom tension spring is also sleeved on the boom guide rod.

[0013] Furthermore, the elbow limiting block is provided with an elbow limiting groove and an elbow reset groove, the elbow rotating block is provided with an elbow limiting pin that matches the elbow limiting groove, the elbow rotating block is provided with an elbow sliding pin that matches the elbow reset groove, the elbow reset groove is provided with an elbow guide rod, the elbow sliding pin is slidably connected to the elbow guide rod, and an elbow tension spring is sleeved on the elbow guide rod.

[0014] Furthermore, the wrist rotating block is provided with a wrist limiting groove and a wrist reset groove. A wrist limiting pin that matches the wrist limiting groove is fixed on the wrist limiting block. A wrist sliding pin that matches the wrist reset groove is fixed on the wrist limiting block. A wrist guide rod is also fixed in the wrist reset groove. A wrist tension spring is sleeved on the wrist guide rod. The wrist sliding pin is slidably connected to the wrist guide rod.

[0015] Furthermore, a longitudinal rod is provided on one side of the boom limiting block, a telescopic buckle is fixed at one end of the longitudinal rod, a telescopic rod that matches the telescopic buckle is fixed on one side of the boom limiting block, a connecting lock head is fixed at the other end of the longitudinal rod, and a connecting lock seat that mates with the connecting lock head is fixed at one end of the extension rod.

[0016] Furthermore, the wrist limiting block has an adjustment slot at the end away from the wrist rotating block, and the forearm fixing block has a length buckle that matches the adjustment slot.

[0017] Furthermore, the elbow limiting block is provided with multiple sets of first adjustment holes and multiple sets of second adjustment holes. The first adjustment holes are used to adjust the installation position of the upper arm rotating block on the elbow limiting block, and the second adjustment holes are used to adjust the installation position of the forearm fixing block on the elbow limiting block.

[0018] Compared to existing technologies, the advantages of this application are:

[0019] This application restricts the range of motion of the wrist through a wrist mechanism, the range of motion of the upper arm through an upper arm mechanism, and the range of motion of the forearm through a forearm mechanism. The elbow mechanism and the waist mechanism work together to limit the swing amplitude of the racket under the overall arm holding posture during the swing. The control box receives foot movement position and height data from the foot sensor and waist rotation data from the string device. It displays the overall forehand swing action demonstration and practical defects to the user, achieving the standardized teaching purpose of learning the forehand in table tennis. This application can meet the wearing needs of users of different body types. By restricting the bending and swing of the elbow, wrist, forearm and upper arm, long-term practice can achieve muscle memory of the forehand swing in table tennis, improve the practice efficiency of the forehand in table tennis, and has market prospects and is suitable for promotion and application. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this application;

[0021] Figure 2 This is a front structural diagram of the mechanical device proposed in this application;

[0022] Figure 3 This is a schematic diagram of the rear structure of the mechanical device proposed in this application;

[0023] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the control box proposed in this application;

[0024] Figure 5 This is an exploded structural diagram of the extension rod and its components proposed in this application;

[0025] Figure 6 This is a schematic diagram of the connection between the telescopic rod and the longitudinal rod proposed in this application;

[0026] Figure 7This is a schematic diagram of the partial exploded structure of the mechanical device proposed in this application;

[0027] Figure 8 This is a schematic diagram of the structure of the boom limiting block and the boom rotating block in the separated state as proposed in this application;

[0028] Figure 9 This is a schematic diagram of the structure of the wrist limiting block and the wrist rotating block in the separated state as proposed in this application;

[0029] Figure 10 This is a schematic diagram of the structure of the first adjustment hole and the second adjustment hole proposed in this application;

[0030] Figure 11 This is a schematic diagram showing the wearing state of this application.

[0031] Explanation of the labels in the diagram:

[0032] Control box 1, control panel 11, guide groove 12, fixed end block 13, ball valve sleeve 131;

[0033] Waist mechanism 2, extension rod 21, connecting lock seat 211, telescopic rod 22, longitudinal rod 23, connecting lock head 231, telescopic buckle 232, boom limiting block 24, boom limiting groove 241, boom reset groove 242, boom guide rod 243, boom tension spring 244, piston valve 25, piston 251, ball valve 252, reset spring 253;

[0034] 3. Pulling device; 31. Pulling line; 32. Wire releasing device;

[0035] Foot sensor 4;

[0036] 5. Waist belt; 51. Tensioning device;

[0037] Wrist mechanism 6, wrist limiting block 61, adjusting slot 611, wrist sliding pin 612, wrist limiting pin 613, wrist rotating block 62, wrist limiting groove 621, wrist reset groove 622, wrist guide rod 623, wrist tension spring 624, wrist fixing block 63;

[0038] 7. Upper arm mechanism, 71. Upper arm fixing block, 72. Elbow rotating block, 721. Elbow sliding pin, 722.

[0039] Elbow mechanism 8, first adjustment hole 801, second adjustment hole 802, upper arm rotating block 81, upper arm positioning pin 811, upper arm limiting pin 812, upper arm sliding pin 813, elbow limiting block 82, elbow limiting groove 821, elbow reset groove 822, elbow guide rod 823, elbow tension spring 824;

[0040] Forearm mechanism 9, forearm fixing block 91, length buckle 92. Detailed Implementation

[0041] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0042] Example 1:

[0043] This invention provides a table tennis forehand training machine; please refer to [link / reference]. Figures 1-11 It includes a control box 1 fixed to the waist of the human body by a belt 5, a mechanical device for controlling the range and movement of the right arm swing, a pull wire device 3 for monitoring the waist rotation amplitude during the swing, and a foot sensor 4 for measuring the foot movement position during the swing. In order to meet the needs of different waist sizes, tensioning devices 51 are provided on both sides of the belt 5. The tensioning devices 51 are used to adjust the tightness of the belt 5.

[0044] Please refer to this first. Figure 1 The mechanical device includes a waist mechanism 2 connected to the control box 1, an elbow mechanism 8 connected to the waist mechanism 2, a forearm mechanism 9 and an upper arm mechanism 7 connected to the elbow mechanism 8, and a wrist mechanism 6 connected to the forearm mechanism.

[0045] For details, please refer to Figure 4 The waist mechanism 2 includes a piston valve 25 disposed in the control box 1. An extension rod 21 is inserted inside the piston valve 25. A ball valve 252 is fixed to the outer wall of one end of the piston valve 25. A ball valve sleeve 131 matching the ball valve 252 is fixed to one side of the control box 1 through a fixed end block 13. A guide groove 12 corresponding to the extension rod 21 is provided on the other side of the control box 1. Two sets of pistons 251 are fixed on the extension rod 21. The pistons 251 are slidably connected inside the piston valve 25. A return spring 253 is also provided inside the piston valve 25. The return spring 253 has an elastic force that drives the entire mechanical device to move along the swing side.

[0046] The control box 1 enables the extension rod 21 to move left and right and up and down during the forehand swing. Specifically, when the user's right arm is in the forehand swing motion of a table tennis ball, when the arm moves inward during the swing, the mechanical device pushes the extension rod 21 to move as a whole. The extension rod 21 and piston 251 are pushed to the left by the force of the return spring 253. During this process, the extension rod 21 is affected by the swing motion and moves to the right. At the same time, it also moves up and down with the ball valve 252 as the rotation point, in conjunction with the ball valve 252 and the guide groove 12. When the arm moves outward during the swing, the mechanical device, in conjunction with the elastic potential energy stored in the return spring 253, pushes the extension rod 21 to the right to complete a forehand motion.

[0047] Please see Figure 7 and Figure 8 Elbow mechanism 8 includes elbow limiting block 82, with upper arm rotating block 81 fixed at the bottom of elbow limiting block 82. Upper arm rotating block 81 has upper arm limiting block 24 at its bottom end. Upper arm rotating block 81 is rotatably connected to upper arm limiting block 24. Upper arm limiting block 24 is detachably connected to one end of extension rod 21. Upper arm mechanism 7 includes elbow rotating block 72 rotatably connected to the top of elbow limiting block 82. Upper arm fixing block 71 is fixed at the top of elbow rotating block 72.

[0048] It should be noted that the boom limiting block 24 is provided with a boom limiting groove 241 and a boom reset groove 242. The boom rotating block 81 is limited and rotatably connected to the boom limiting block 24 through the boom positioning pin 811. The boom rotating block 81 is also provided with a boom limiting pin 812 that cooperates with the boom limiting groove 241 and a boom sliding pin 813 that cooperates with the boom reset groove 242. The boom reset groove 242 is also provided with a boom guide rod 243. The boom sliding pin 813 is slidably connected to the boom guide rod 243. The boom tension spring 244 is also sleeved on the boom guide rod 243.

[0049] When the forearm mechanism 9, upper arm mechanism 7 and wrist mechanism 6 are fixed on the user's right hand, the swinging motion of the right elbow is restricted by the upper arm limiting pin 812 and the upper arm limiting groove 241, and is buffered and reset by the upper arm tension spring 244.

[0050] Please see Figure 7 The elbow limiting block 82 is provided with an elbow limiting groove 821 and an elbow reset groove 822. The elbow rotating block 72 is provided with an elbow limiting pin 722 that matches the elbow limiting groove 821. The elbow rotating block 72 is provided with an elbow sliding pin 721 that matches the elbow reset groove 822. An elbow guide rod 823 is provided in the elbow reset groove 822. The elbow sliding pin 721 is slidably connected to the elbow guide rod 823. An elbow tension spring 824 is sleeved on the elbow guide rod 823.

[0051] When the upper arm fixing block 71 is fixed to the user's upper arm by the adjustable strap, the rotation angle of the elbow rotating block 72 is limited by the elbow limiting pin 722 and the elbow limiting groove 821, and is buffered and reset by the elbow tension spring 824.

[0052] Please see 7 and Figure 9The forearm mechanism 9 includes a forearm fixing block 91 fixed to one side of the elbow limiting block 82. The wrist mechanism 6 includes a wrist limiting block 61. One end of the wrist limiting block 61 is adjustablely connected to the forearm fixing block 91. The other end of the wrist limiting block 61 is rotatably connected to a wrist rotating block 62. A wrist fixing block 63 is fixed to one side of the wrist rotating block 62. The wrist rotating block 62 is provided with a wrist limiting groove 621 and a wrist reset groove 622. A wrist limiting pin 613 matching the wrist limiting groove 621 is fixed to the wrist limiting block 61. A wrist sliding pin 612 matching the wrist reset groove 622 is fixed to the wrist limiting block 61. A wrist guide rod 623 is also fixed in the wrist reset groove 622. A wrist tension spring 624 is sleeved on the wrist guide rod 623. The wrist sliding pin 612 is slidably connected to the wrist guide rod 623.

[0053] It should be noted that when the wrist fixing block 63 is fixed to the wrist by the adjustable strap, the rotation angle of the wrist rotating block 62 is limited by the wrist limiting pin 613 and the wrist limiting groove 621, and is buffered and reset by the wrist tension spring 624.

[0054] Please see Figures 4-6 A longitudinal rod 23 is provided on one side of the boom limiting block 24. A telescopic buckle 232 is fixed at one end of the longitudinal rod 23. A telescopic rod 22 that matches the telescopic buckle 232 is fixed on one side of the boom limiting block 24. A connecting lock head 231 is fixed at the other end of the longitudinal rod 23. A connecting lock seat 211 that cooperates with the connecting lock head 231 is fixed at one end of the extension rod 21.

[0055] The connecting lock head 231 and the connecting lock seat 211 are quick-release connection structures, which facilitates the quick disassembly and installation of the mechanical device and the waist mechanism 2. This allows users to quickly disassemble during rest or quickly assemble during use. Through the design of the telescopic buckle 232 and the telescopic rod 22, the distance between the mechanical device and the waist mechanism 2 can be adjusted by adjusting the telescopic rod 22 to meet the usage needs of users of different body types.

[0056] Please see Figure 7 The wrist limiting block 61 is provided with an adjustment slot 611 at one end away from the wrist rotating block 62. The forearm fixing block 91 is provided with a length buckle 92 that cooperates with the adjustment slot 611. By cooperating with the adjustment slot 611, the distance between the wrist limiting block 61 and the forearm fixing block 91 can be adjusted to meet the usage needs of users with different forearm lengths.

[0057] Please see Figure 10The elbow limiting block 82 is provided with multiple sets of first adjustment holes 801 and multiple sets of second adjustment holes 802. The first adjustment holes 801 are used to adjust the installation position of the upper arm rotating block 81 on the elbow limiting block 82, and the second adjustment holes 802 are used to adjust the installation position of the forearm fixing block 91 on the elbow limiting block 82.

[0058] The design of the first adjustment hole 801 and the second adjustment hole 802 allows for adjustment of the installation positions of the upper arm rotating block 81 and the lower arm fixing block 91 on the elbow limiting block 82, thus meeting the usage needs of users with different elbow sizes.

[0059] Please see Figure 1 and Figure 11 The top of the control box 1 is equipped with a control screen 11. The foot sensor 4 is in the form of a U-shaped retainer. There are two foot sensors 4, which are respectively attached to the user's shoes. The foot sensors 4 communicate with the control screen 11 through a wireless transmission protocol.

[0060] Please see Figure 3 and Figure 4 The cable pulling device 3 is fixed to the right leg side of the user. The control box 1 is equipped with a cable feeding device 32. A traction cable 31 is connected between the cable feeding device 32 and the cable pulling device 3. The cable feeding device 32 winds up the traction cable 31 through a motor and feeds back the length data of the traction cable 31 released to the control screen 11 through the motor.

[0061] The wrist mechanism 6 is used to limit the range of motion of the wrist, the upper arm mechanism 7 is used to limit the range of motion of the upper arm, the forearm mechanism 9 is used to limit the range of motion of the forearm, and the elbow mechanism 8 works with the waist mechanism 2 to limit the swing amplitude of the entire arm holding the racket during the swing. The control box 1 receives the foot movement position and height data fed back by the foot sensor 4 and the waist rotation data fed back by the string device 3, and displays the overall forehand swing action demonstration and practical defects to the user, so as to achieve the standard teaching purpose of learning the forehand in table tennis. This application can meet the wearing needs of users of different body types. By limiting the bending and swing of the elbow, wrist, forearm and upper arm, long-term practice can achieve muscle memory of the forehand swing in table tennis, improve the practice efficiency of the forehand in table tennis, and has market prospects and is suitable for promotion and application.

[0062] The above description is only the best implementation method adopted in this application in combination with current practical needs, but the scope of protection of this application is not limited thereto.

Claims

1. A table tennis forehand learning and teaching machine, comprising a control box (1) fixed to the waist of a person via a waist belt (5), a mechanical device for controlling the range and movement of the right arm swing, a pull-string device (3) for monitoring the waist rotation amplitude during the swing, and a foot sensor (4) for measuring the foot movement position during the swing, characterized in that, The mechanical device includes a waist mechanism (2) connected to the control box (1), an elbow mechanism (8) connected to the waist mechanism (2), a forearm mechanism (9) and an upper arm mechanism (7) connected to the elbow mechanism (8), and a wrist mechanism (6) connected to the forearm mechanism. The waist mechanism (2) includes a piston valve (25) disposed in the control box (1), an extension rod (21) is inserted in the piston valve (25), a ball valve (252) is fixed on the outer wall of one end of the piston valve (25), a ball valve sleeve (131) matching the ball valve (252) is fixed on one side of the control box (1) through a fixed end block (13), a guide groove (12) corresponding to the extension rod (21) is provided on the other side of the control box (1), two sets of pistons (251) are fixed on the extension rod (21), the pistons (251) are slidably connected in the piston valve (25), and a return spring (253) is also provided in the piston valve (25). The elbow mechanism (8) includes an elbow limiting block (82), and a large arm rotating block (81) is fixed at the bottom of the elbow limiting block (82). A large arm limiting block (24) is provided at the bottom end of the large arm rotating block (81). The large arm rotating block (81) is rotatably connected to the large arm limiting block (24). The large arm limiting block (24) is detachably connected to one end of the extension rod (21). The upper arm mechanism (7) includes an elbow rotating block (72) that is rotatably connected to the top of the elbow limiting block (82), and an upper arm fixing block (71) is fixed to the top of the elbow rotating block (72). The forearm mechanism (9) includes a forearm fixing block (91) fixed to one side of the elbow limiting block (82), and the wrist mechanism (6) includes a wrist limiting block (61). One end of the wrist limiting block (61) is adjustablely connected to the forearm fixing block (91), and the other end of the wrist limiting block (61) is rotatably connected to a wrist rotating block (62). One side of the wrist rotating block (62) is fixed with a wrist fixing block (63). The boom limiting block (24) is provided with a boom limiting groove (241) and a boom reset groove (242). The boom rotating block (81) is limited and rotatably connected to the boom limiting block (24) by a boom positioning pin (811). The boom rotating block (81) is also provided with a boom limiting pin (812) that cooperates with the boom limiting groove (241) and a boom sliding pin (813) that cooperates with the boom reset groove (242). The boom reset groove (242) is also provided with a boom guide rod (243). The boom sliding pin (813) is slidably connected to the boom guide rod (243). The boom guide rod (243) is also sleeved with a boom tension spring (244). The elbow limiting block (82) is provided with an elbow limiting groove (821) and an elbow reset groove (822). The elbow rotating block (72) is provided with an elbow limiting pin (722) that matches the elbow limiting groove (821). The elbow rotating block (72) is provided with an elbow sliding pin (721) that matches the elbow reset groove (822). An elbow guide rod (823) is provided in the elbow reset groove (822). The elbow sliding pin (721) is slidably connected to the elbow guide rod (823). An elbow tension spring (824) is sleeved on the elbow guide rod (823). The wrist rotating block (62) is provided with a wrist limiting groove (621) and a wrist reset groove (622). The wrist limiting block (61) is fixed with a wrist limiting pin (613) that matches the wrist limiting groove (621). The wrist limiting block (61) is fixed with a wrist sliding pin (612) that matches the wrist reset groove (622). The wrist reset groove (622) is also fixed with a wrist guide rod (623). The wrist guide rod (623) is sleeved with a wrist tension spring (624). The wrist sliding pin (612) is slidably connected to the wrist guide rod (623). The boom limiting block (24) has a longitudinal rod (23) on one side. One end of the longitudinal rod (23) is fixed with a telescopic buckle (232). One side of the boom limiting block (24) is fixed with a telescopic rod (22) that matches the telescopic buckle (232). The other end of the longitudinal rod (23) is fixed with a connecting lock head (231). One end of the extension rod (21) is fixed with a connecting lock seat (211) that cooperates with the connecting lock head (231). The wrist limiting block (61) has an adjustment slot (611) at one end away from the wrist rotating block (62), and the forearm fixing block (91) has a length buckle (92) that cooperates with the adjustment slot (611). The elbow limiting block (82) is provided with multiple sets of first adjustment holes (801) and multiple sets of second adjustment holes (802). The first adjustment hole (801) is used to adjust the installation position of the upper arm rotating block (81) on the elbow limiting block (82), and the second adjustment hole (802) is used to adjust the installation position of the forearm fixing block (91) on the elbow limiting block (82).

2. The table tennis forehand learning and teaching machine according to claim 1, characterized in that, The top of the control box (1) is provided with a control screen (11), the foot sensor (4) is in the form of a U-shaped retainer, and there are two foot sensors (4).

3. A table tennis forehand learning and teaching machine according to claim 2, characterized in that, The control box (1) is equipped with a wire feeding device (32), and a traction line (31) is connected between the wire feeding device (32) and the wire pulling device (3).

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