Table tennis serving posture adjusting device
By optimizing the vertical and horizontal swing mechanisms, the problems of complex structure and high power consumption in existing table tennis serving devices have been solved. This has resulted in lightweight, well-heated table tennis serving posture adjustment with high precision, reasonable structure, and low power consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI DOUBLE SNAKE SPORTS EQUIP TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-12
AI Technical Summary
The existing ping-pong ball serving device has a complex horizontal and vertical swing mechanism, which is inconvenient to disassemble and assemble, has low motion accuracy, high power consumption, and requires an additional cooling fan to overcome the heat problem of the device.
The ball-launching machine employs a longitudinal swing mechanism and a transverse swing mechanism. Through components such as the longitudinal swing base, longitudinal swing spring, longitudinal swing turbine, longitudinal swing worm gear, and transverse swing swivel sleeve, the pitch and lateral attitude of the ball-launching machine head can be adjusted. The cooperation between the longitudinal swing turbine worm gear structure and the transverse swing swivel sleeve ensures the accuracy and stability of the action, reduces power consumption, and eliminates the need for a cooling fan.
It achieves a table tennis serve posture adjustment with reasonable structure, small size, light weight, and good heat dissipation, high action precision, low power consumption, no need for cooling fan, and improves the user experience of the device.
Smart Images
Figure CN224220712U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of table tennis serving equipment manufacturing technology, specifically a table tennis serving posture adjustment device with reasonable structure, small size, light weight, and good heat dissipation. Background technology:
[0002] Existing table tennis serving devices on the market mainly consist of a shell with a ball conveying channel. One end of the shell is fitted with the serving machine head, and the other end has a ball inlet connected to the conveying channel. The ball feeding mechanism continuously feeds the table tennis balls into the ball conveying channel and further into the machine head. The machine head is equipped with a throwing device to launch the ball. To mimic human actions in launching, spinning, and straight serves, and to accurately simulate various technical factors such as the launch speed, spin, and trajectory of the table tennis ball launched by the machine head, existing table tennis serving devices also include a lateral swing mechanism for driving the lateral swing of the machine head, a longitudinal swing mechanism for driving the pitch swing of the machine head, and a machine head rotation mechanism for driving the rotation of the machine head. Clearly, only by precisely combining the lateral swing, pitch, and spin movements can the simulation of various ball trajectories or ball characteristics be achieved.
[0003] Existing similar equipment features complex horizontal or vertical swing mechanisms that are inconvenient to assemble and disassemble. Furthermore, due to the weight of the ball-serving machine head, the horizontal or vertical swing mechanisms, which use gear meshing, experience excessive swing amplitude due to inertia during operation, resulting in decreased accuracy. Additionally, the vertical swing mechanism needs to overcome the weight of the machine head located at the top front when adjusting the pitch. Specifically, during pitch adjustment, the machine head tends to tilt rapidly downwards under gravity, while the pitch position requires overcoming gravity to rise, leading to a significant difference in execution time between the two actions. To overcome this, existing technologies add weights to the back of the machine head to improve stability during pitch and tilt. Alternatively, some manufacturers use high-power devices to quickly raise the machine head for pitch adjustment. All of these methods result in high power consumption and increased heat generation, ultimately requiring the addition of dedicated cooling fans and other components, further increasing the equipment's size and structural complexity. Summary of the Invention:
[0004] This invention addresses the shortcomings and deficiencies of existing technologies by proposing a table tennis serve posture adjustment device that features a reasonable structure, small size, light weight, and good heat dissipation.
[0005] This utility model achieves its purpose through the following measures:
[0006] A table tennis serving posture adjustment device includes a serving machine head, a ball conveying channel (1), and a ball supply base. The serving machine head is mounted on the ball supply base via the ball conveying channel (1). The device is characterized by a longitudinal swing mechanism for adjusting the pitch posture of the serving machine head between the serving machine head and the ball conveying channel (1). The longitudinal swing mechanism includes a longitudinal swing base (2), a longitudinal swing spring (3), a longitudinal swing bend (4), a longitudinal swing turbine (5), a longitudinal swing worm (6), and a longitudinal swing motor (7). The longitudinal swing base (2) has a cavity connected to the ball conveying channel (1). The longitudinal swing bend (4) has a bend body, which is hollow and has symmetrically arranged inner rotating wheels (1) at its lower end. 9) An outer wheel is provided on the upper outer side of the swing base (2) corresponding to the position of the inner wheel (19). The swing base (2) is sleeved on the lower end of the swing bend (4), and the inner wheel and the outer wheel are hinged through the wheel axle. The swing bend (4) is connected to the swing base (2). A tooth groove is provided on the circumferential surface of at least one inner wheel, so that the inner wheel and the tooth groove form a swing turbine (5). A slot is opened on the side wall of the swing bend (4), and the swing worm (6) meshes with the tooth groove of the swing turbine (5) on the inner side of the swing bend (4) through the slot. The output shaft of the swing motor (7) drives the swing worm (6) to rotate through the gear, drives the swing turbine (5) to rotate and drives the swing bend (4) to pitch and swing.
[0007] The ball conveying channel (1) of this utility model is vertically arranged; the upper end of the longitudinal swing bend (4) is connected to the rear end of the ball machine head (1); the lower end of the longitudinal swing spring (3) of this utility model is fixed to the outside of the longitudinal swing base (2), and the upper end is connected to the outer wall of the longitudinal swing bend (4).
[0008] The swing base (2) of this utility model is also provided with a swing gearbox (8), a pinion (9) is led out from the swing worm (6), the pinion (9) is connected to the swing gearbox (8), the swing gearbox converts the rotation angle of the swing worm (6) into a digital signal and sends it to the main board, and the main board sends a swing command to the swing motor (7).
[0009] The sway worm (6) of this invention is located in front of the sway bend (4) and meshes with the tooth groove on the sway worm (5).
[0010] In the longitudinal swing mechanism of this utility model, two longitudinal swing springs (3) are symmetrically arranged. The two longitudinal swing springs (3) are respectively arranged on both sides below the longitudinal swing bend (4). The longitudinal swing springs (3) are always in a stretched state and are used to counterweight the head of the ball machine to achieve buffering of the tilting posture adjustment.
[0011] This utility model also includes a horizontal swing mechanism (20), which is set on the ball conveying channel (1) and located below the vertical swing mechanism. The horizontal swing mechanism includes a horizontal swing hinge sleeve (11), a horizontal swing gimbal (10), a horizontal swing gearbox (12), a horizontal swing motor (13), a horizontal swing worm (14), and a horizontal swing turbine (15). The horizontal swing hinge sleeve (11) includes two coaxial sleeves that are fitted together, wherein a bearing structure is provided between the inner sleeve and the outer sleeve, and the inner sleeve... The ball conveying channel (1) is an integral structure, that is, the inner sleeve and the outer sleeve are provided with a matching annular fitting groove and annular boss, and the annular fitting groove is provided with balls so that the inner sleeve and the outer sleeve can rotate relative to each other. Furthermore, the outer wall of the inner sleeve is provided with tooth grooves along the circumference of the inner sleeve to form a lateral turbine (15), and corresponding slots are opened on the outer sleeve so that the tooth groove of the lateral worm (14) located on the outer side of the outer sleeve meshes with the tooth groove of the lateral turbine (15).
[0012] The horizontal swing joint sleeve (11) of this utility model can be provided with two sets of bearing structures, and a horizontal swing turbine (15) is set in the space between the two sets of bearing structures. The upper end of the horizontal swing joint sleeve (11) is fixedly connected to the lower end of the ball conveying channel (1). The lower end of the horizontal swing joint sleeve (11) is installed on the horizontal swing gimbal (10). The horizontal swing motor (13) is fixed on the horizontal swing joint sleeve (11) via the horizontal swing motor bracket (16). The output end of the horizontal swing motor (13) is connected to the horizontal swing worm (15) via gears. 4) Engagement: The lateral worm (14) engages with the lateral turbine (15), thereby driving the lateral turbine (15) and the lateral swivel sleeve (11) connected to it to swing horizontally via the lateral motor (13); a lateral pinion (17) is led out from the lateral worm (14), and the lateral pinion (17) is connected to the lateral gearbox (12) to convert the rotation angle signal of the lateral worm (14) into a digital signal that can be processed by the control motherboard, thereby realizing the control of the lateral motor (13).
[0013] In operation, this invention uses a longitudinal swing mechanism to adjust the pitch of the longitudinal swing bend and its front end assembly. During this process, the configuration of the various component installation positions, along with the counterweight and buffering of the longitudinal swing spring, ensures a smooth pitch adjustment. The longitudinal swing worm gear structure enables self-locking at the desired pitch position, preventing distortion. Furthermore, a transverse swing mechanism is included, allowing for stable horizontal swinging of the components above the transverse swing joint. The entire device has a reasonable structure, low power consumption, and good heat dissipation, eliminating the need for a cooling fan and representing a significant improvement over existing technologies. Attached image description:
[0014] Appendix Figure 1 This is a schematic diagram of one usage state of this utility model.
[0015] Appendix Figure 2 This is a schematic diagram of the longitudinal swing mechanism in this utility model.
[0016] Appendix Figure 3 This is a cross-sectional view of the longitudinal swing mechanism in this utility model.
[0017] Appendix Figure 4 This is a left view of the lateral swing mechanism in this utility model.
[0018] Appendix Figure 5 This is a right view of the lateral swing mechanism in this utility model.
[0019] Appendix Figure 6 This is a cross-sectional view of the lateral tilting mechanism in this utility model.
[0020] Appendix Figure 7 This is a structural diagram of the horizontal swing knot sleeve in this utility model.
[0021] Appendix Figure 8 This is a structural diagram of the longitudinal swing elbow in this utility model.
[0022] Reference numerals in the attached diagram: ball conveying channel (1), longitudinal swing base (2), longitudinal swing spring (3), longitudinal swing elbow (4), longitudinal swing turbine (5), longitudinal swing worm (6), longitudinal swing motor (7), longitudinal swing gearbox (8), pinion (9), transverse swing joint sleeve (11), transverse swing gimbal (10), transverse swing gearbox (12), transverse swing motor (13), transverse swing worm (14), transverse swing turbine (15), transverse swing motor bracket (16), transverse swing pinion (17), longitudinal swing ball outlet (18), rotating wheel (19), transverse swing mechanism (20), bearing structure (21). Detailed implementation method:
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] As attached Figure 1 , 2As shown in Figure 3, this utility model proposes a table tennis serving posture adjustment device, which includes a serving machine head, a ball conveying channel (1), and a ball supply base. The serving machine head is installed on the ball supply base via the ball conveying channel (1). A longitudinal swing mechanism for adjusting the pitch posture of the serving machine head is provided between the serving machine head and the ball conveying channel (1). The longitudinal swing mechanism includes a longitudinal swing base (2), a longitudinal swing spring (3), a longitudinal swing bend (4), a longitudinal swing turbine (5), a longitudinal swing worm (6), and a longitudinal swing motor (7). The longitudinal swing base (2) has a cavity connected to the ball conveying channel (1). The longitudinal swing bend (4) has a bend body, which is hollow and has symmetrical inner ends at the lower end. The upper outer side of the swing base (2) is provided with an outer swing wheel corresponding to the position of the inner swing wheel (19). The swing base (2) is sleeved on the lower end of the swing bend (4), and the inner swing wheel and the outer swing wheel are hinged through the wheel axle. The swing bend (4) is connected to the swing base (2). A tooth groove is provided on the circumferential surface of at least one inner swing wheel, so that the inner swing wheel and the tooth groove form a swing turbine (5). A slot is opened on the side wall of the swing bend (4), and the swing worm (6) meshes with the tooth groove of the swing turbine (5) on the inner side of the swing bend (4) through the slot. The output shaft of the swing motor (7) drives the swing worm (6) to rotate through the gear, drives the swing turbine (5) to rotate and drives the swing bend (4) to pitch and swing.
[0025] The ball conveying channel (1) of this utility model is vertically arranged; the upper end of the longitudinal swing bend (4) is connected to the rear end of the ball machine head (1); the lower end of the longitudinal swing spring (3) of this utility model is fixed to the outside of the longitudinal swing base (2), and the upper end is connected to the outer wall of the longitudinal swing bend (4).
[0026] The swing base (2) of this utility model is also provided with a swing gearbox (8), a pinion (9) is led out from the swing worm (6), the pinion (9) is connected to the swing gearbox (8), the swing gearbox converts the rotation angle of the swing worm (6) into a digital signal and sends it to the main board, and the main board sends a swing command to the swing motor (7).
[0027] The sway worm (6) of this invention is located in front of the sway bend (4) and meshes with the tooth groove on the sway worm (5).
[0028] In the longitudinal swing mechanism of this utility model, two longitudinal swing springs (3) are symmetrically arranged. The two longitudinal swing springs (3) are respectively arranged on both sides below the longitudinal swing bend (4). The longitudinal swing springs (3) are always in a stretched state and are used to counterweight the head of the ball machine to achieve buffering of the tilting posture adjustment.
[0029] This utility model also includes a horizontal swing mechanism (20), which is set on the ball conveying channel (1) and located below the vertical swing mechanism. The horizontal swing mechanism includes a horizontal swing hinge sleeve (11), a horizontal swing gimbal (10), a horizontal swing gearbox (12), a horizontal swing motor (13), a horizontal swing worm (14), and a horizontal swing turbine (15). The horizontal swing hinge sleeve (11) includes two coaxial sleeves that are fitted together, wherein a bearing structure is provided between the inner sleeve and the outer sleeve, and the inner sleeve... The ball conveying channel (1) is an integral structure, that is, the inner sleeve and the outer sleeve are provided with a matching annular fitting groove and annular boss, and the annular fitting groove is provided with balls so that the inner sleeve and the outer sleeve can rotate relative to each other. Furthermore, the outer wall of the inner sleeve is provided with tooth grooves along the circumference of the inner sleeve to form a lateral turbine (15), and corresponding slots are opened on the outer sleeve so that the tooth groove of the lateral worm (14) located on the outer side of the outer sleeve meshes with the tooth groove of the lateral turbine (15).
[0030] The horizontal swing joint sleeve (11) of this utility model can be provided with two sets of bearing structures, and a horizontal swing turbine (15) is set in the space between the two sets of bearing structures. The upper end of the horizontal swing joint sleeve (11) is fixedly connected to the lower end of the ball conveying channel (1). The lower end of the horizontal swing joint sleeve (11) is installed on the horizontal swing gimbal (10). The horizontal swing motor (13) is fixed on the horizontal swing joint sleeve (11) via the horizontal swing motor bracket (16). The output end of the horizontal swing motor (13) is connected to the horizontal swing worm (15) via gears. 4) Engagement: The lateral worm (14) engages with the lateral turbine (15), thereby driving the lateral turbine (15) and the lateral swivel sleeve (11) connected to it to swing horizontally via the lateral motor (13); a lateral pinion (17) is led out from the lateral worm (14), and the lateral pinion (17) is connected to the lateral gearbox (12) to convert the rotation angle signal of the lateral worm (14) into a digital signal that can be processed by the control motherboard, thereby realizing the control of the lateral motor (13).
[0031] In operation, this invention uses a longitudinal swing mechanism to adjust the pitch of the longitudinal swing bend and its front end assembly. During this process, the configuration of the various component installation positions, along with the counterweight and buffering of the longitudinal swing spring, ensures a smooth pitch adjustment. The longitudinal swing worm gear structure enables self-locking at the desired pitch position, preventing distortion. Furthermore, a transverse swing mechanism is included, allowing for stable horizontal swinging of the components above the transverse swing joint. The entire device has a reasonable structure, low power consumption, and good heat dissipation, eliminating the need for a cooling fan and representing a significant improvement over existing technologies.
Claims
1. A table tennis serving posture adjustment device, comprising a serving machine head, a ball conveying channel (1), and a ball supply base, wherein the serving machine head is mounted on the ball supply base via the ball conveying channel (1), characterized in that, A longitudinal swing mechanism for adjusting the pitch of the ball-serving machine head is provided between the ball-feeding machine head and the ball-carrying channel (1). The longitudinal swing mechanism includes a longitudinal swing base (2), a longitudinal swing spring (3), a longitudinal swing bend (4), a longitudinal swing turbine (5), a longitudinal swing worm (6), and a longitudinal swing motor (7). The longitudinal swing base (2) has a cavity connected to the ball-carrying channel (1). The longitudinal swing bend (4) has a bend body, which is hollow and has inner wheels (19) symmetrically arranged at the lower end. An outer wheel is provided on the upper outer side of the longitudinal swing base (2) corresponding to the position of the inner wheel (19). The pendulum base (2) is sleeved on the lower end of the pendulum bend (4), and the inner wheel and the outer wheel are hinged through the wheel axle. The pendulum bend (4) is connected to the pendulum base (2). A tooth groove is provided on the circumferential surface of at least one inner wheel, so that the inner wheel and the tooth groove form a pendulum turbine (5). A slot is opened on the side wall of the pendulum bend (4), and the pendulum worm (6) meshes with the tooth groove of the pendulum turbine (5) on the inner side of the pendulum bend (4) through the slot. The output shaft of the pendulum motor (7) drives the pendulum worm (6) to rotate through the gear, drives the pendulum turbine (5) to rotate and drives the pendulum bend (4) to pitch and swing.
2. The table tennis serve posture adjustment device according to claim 1, characterized in that, The ball conveying channel (1) is set vertically; the upper end of the longitudinal swing bend (4) is connected to the rear end of the ball machine head.
3. The table tennis serve posture adjustment device according to claim 1, characterized in that, The lower end of the longitudinal swing spring (3) is fixed to the outside of the longitudinal swing base (2), and the upper end is connected to the outer wall of the longitudinal swing bend (4).
4. The table tennis serve posture adjustment device according to claim 1, characterized in that, The longitudinal swing base (2) is also provided with a longitudinal swing gearbox (8), and a pinion (9) is led out from the longitudinal swing worm (6). The pinion (9) is connected to the longitudinal swing gearbox (8). The longitudinal swing gearbox converts the rotation angle of the longitudinal swing worm (6) into a digital signal and sends it to the main board. The main board then sends a longitudinal swing command to the longitudinal swing motor (7).
5. The table tennis serve posture adjustment device according to claim 1, characterized in that, The sway worm (6) is located in front of the sway bend (4) and meshes with the tooth groove on the sway worm (5).
6. The table tennis serve posture adjustment device according to claim 1, characterized in that, Two symmetrical swing springs (3) are provided in the swing mechanism. The two swing springs (3) are respectively set on both sides below the swing bend (4). The swing springs (3) are always in a stretched state and are used to counterweight the head of the ball machine to achieve buffering of the tilting posture adjustment.
7. The table tennis serve posture adjustment device according to claim 1, characterized in that, A horizontal swing mechanism (20) is also provided. The horizontal swing mechanism (20) is set on the ball conveying channel (1) and located below the vertical swing mechanism. The horizontal swing mechanism includes a horizontal swing swivel sleeve (11), a horizontal swing gimbal (10), a horizontal swing gearbox (12), a horizontal swing motor (13), a horizontal swing worm (14), and a horizontal swing turbine (15). The horizontal swing swivel sleeve (11) includes two coaxial sleeves that are sleeved together. A bearing structure is provided between the inner sleeve and the outer sleeve. The ball conveying channel (1) is an integral structure of the inner sleeve. That is, a matching annular fitting groove and an annular boss are provided between the inner sleeve and the outer sleeve. Balls are arranged in the annular fitting groove so that the inner sleeve and the outer sleeve can rotate relative to each other. Furthermore, a tooth groove is arranged along the circumference of the inner sleeve on the outer wall of the inner sleeve to form a horizontal swing turbine (15). A corresponding slot is opened on the outer sleeve so that the tooth groove of the horizontal swing worm (14) located on the outer side of the outer sleeve meshes with the tooth groove of the horizontal swing turbine (15).
8. A table tennis serve posture adjustment device according to claim 7, characterized in that, The swaying swivel sleeve (11) may be provided with two sets of bearing structures, and a swaying worm gear (15) is provided in the space between the two sets of bearing structures. The upper end of the swaying swivel sleeve (11) is fixedly connected to the lower end of the ball conveying channel (1). The lower end of the swaying swivel sleeve (11) is installed on the swaying gimbal (10). The swaying motor (13) is fixed on the swaying swivel sleeve (11) via the swaying motor bracket (16). The output end of the swaying motor (13) meshes with the swaying worm gear (14) via gears. When the lateral worm (14) and the lateral turbine (15) are engaged, the lateral motor (13) drives the lateral turbine (15) and the lateral live joint sleeve (11) connected to it to swing in the horizontal direction; a lateral pinion (17) is led out from the lateral worm (14), and the lateral pinion (17) is connected to the lateral gearbox (12) to convert the rotation angle signal of the lateral worm (14) into a digital signal that can be processed by the control motherboard, so as to realize the control of the lateral motor (13).