A scoring device for table tennis

Abstract

The application discloses a table tennis match scoring device and relates to the technical field of sports equipment. The application solves the problems of traditional electronic screens, such as high reflectivity, high power consumption and high maintenance cost. The device drives the flexible belt to rotate and display the score through the first and second control motors, and the swing rod drives the air pump to realize the automatic cleaning function, thereby keeping the equipment clean for a long time. Compared with the electronic screen, the device has the advantages of simple structure, energy saving and environmental protection, clear display effect, and is especially suitable for long-term idle venues, and has the remarkable advantages of high reliability, long service life and low maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of sports equipment technology, specifically a scoring device for table tennis competitions. Background Technology

[0002] Currently, electronic screens are the most common scoring devices in table tennis competitions. These screens are self-illuminating and can clearly display the score. However, in practical applications, they present the following problems: The surface of the electronic screen is prone to glare, especially under strong light, making it difficult for some spectators to read the score; the screen consumes a lot of power when constantly on, making it unsuitable for venues that are idle for extended periods, resulting in significant energy waste; the electronic screen is prone to dust accumulation, and although dust has a limited impact on the display, regular cleaning is necessary to maintain the device's appearance; manufacturing and maintenance costs are high, especially the cost of replacing electronic components, increasing the operational burden on venues; the high dependence on electrical components and the complex circuit design increase the risk of equipment failure and the difficulty of maintenance. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a scoring device for table tennis competitions, comprising two symmetrically arranged sidewalls, with a top cover plate and a bottom dust discharge trough fixedly fitted at the top and bottom of the two sidewalls respectively, and multiple edge drive rollers rotatably mounted on the inner surfaces of the two sidewalls respectively, with an inner drive roller rotatably fitted between each pair of symmetrically arranged edge drive rollers, and an inner drive roller drive shaft fixed at the axis of each inner drive roller, the inner drive roller drive shaft passing through the axis of the edge drive roller to the outer side of the sidewall, wherein the inner drive roller drive shaft rotates with each edge drive roller, and flexible belts are driven and sleeved on all edge drive rollers and inner drive rollers, wherein there are four flexible belts in total, the two outermost flexible belts respectively drive and engage with the two sets of edge drive rollers closest to the sidewalls, and the two innermost flexible belts respectively drive and engage with the two sets of inner drive rollers far from the sidewalls.

[0004] Preferably, one of the transmission directions of all flexible belts is a plane, and a front panel is provided at this plane for observing the numbers on the surface of the flexible belt. A combination of numbers 0-9 is provided on the surface of each flexible belt.

[0005] Preferably, the bottom dust removal groove is located on the lower surface of the flexible belt, and multiple brushes are fixed on the bottom dust removal groove or the two side wall plates. The brushes are in contact with the lower surface of all the flexible belts to remove dust from the surface of the flexible belts.

[0006] Preferably, side cover plates are fixed on the opposite sides of both side wall plates, and a second control motor is fixed on each side cover plate. The output shafts of the two second control motors are fixedly engaged with the drive shaft of the inner transmission roller. Two symmetrically arranged first control motors are fixed on the outer surface of the top cover plate. An active actuating gear is fixed on the output shaft of each of the two first control motors. A passive actuating gear, which is fixedly engaged with the edge transmission roller, is rotatably mounted on the opposite sides of both side wall plates. The passive actuating gear meshes with the active actuating gear for transmission.

[0007] Preferably, a rear support plate is fixedly mounted on the top cover or side cover, and a protective cover is fixedly mounted on the rear support plate. A swing rod in a swinging state is provided on the inner side of the protective cover. A gearbox and an air pump are also fixedly mounted on the rear support plate. The drive shaft of the air pump is directly and fixedly matched with the output shaft of the gearbox. An air guide pipe is fixedly connected to the exhaust port of the air pump. An air jet channel is fixedly connected to the end of the air guide pipe away from the air pump. The air jet channel is located on the side of the bottom dust discharge channel, and an air jet nozzle is opened on the air jet channel. The air jet nozzle is used to blow out the dust that falls on the surface of the bottom dust discharge channel.

[0008] Preferably, a swing arm bracket is fixedly installed on the rear support plate, wherein the swing arm is rotatably mounted on the swing arm bracket, and the input shaft of the gearbox is connected to the swing arm via a ratchet assembly.

[0009] Preferably, a semi-circular drive disk is fixed on the swing arm bracket, and the semi-circular drive disk is coaxially arranged with the ratchet assembly. A swing pin is fixedly installed on the swing arm, and the rotation axis of the swing pin is the same as that of the ratchet assembly. A conductive contact is provided at the center of the edge of the semi-circular drive disk, and the conductive contact is conductively engaged with the end of the swing pin to trigger the relay self-locking.

[0010] Preferably, both ends of the bottom edge of the semi-circular drive disc are fixedly provided with normally closed buttons that engage with the oscillating pin, used to de-energize the relay and release the relay's self-locking state.

[0011] Preferably, a magnetic positioning block is fixed in the middle of the swing rod, a bottom limiting plate is fixed at the bottom end of the swing rod, an electromagnet is provided between the magnetic positioning block and the bottom limiting plate, the electromagnet is slidably sleeved on the swing rod, wherein the electromagnet and the magnetic positioning block are magnetically engaged, and the normally open contact of the relay is electrically connected to the electromagnet.

[0012] Compared with the prior art, the present invention has the following advantages: (1) The present invention uses a flexible strip to rotate and display the score. Compared with the traditional electronic screen, it does not rely on light-emitting devices, so it will not affect the audience's viewing due to reflection problems. The surface of the flexible strip is a non-smooth material, which avoids glare interference and is suitable for use in competition venues under strong light conditions, ensuring that the audience can easily obtain the real-time score information of the competition; (2) The present invention only consumes power when adjusting the score, and does not consume power at other times. Compared with the power consumption of the electronic display screen which is always on, it significantly reduces energy consumption and is very suitable for use in competition venues that are idle for a long time, thereby reflecting the green and environmentally friendly concept and reducing the cost of use; (3) The present invention drives the air pump to generate airflow through the reciprocating motion of the swing rod, combined with the brush to clean the dust on the surface of the flexible strip, avoiding the impact of dust accumulation on the score display. This design reduces the frequency of manual maintenance and ensures the long-term cleanliness and operation effect of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the side wall panel of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the motor control section of the present invention.

[0016] Figure 4 This is a schematic diagram of the structure at the drive shaft of the inner transmission roller of the present invention.

[0017] Figure 5 This is a schematic diagram of the brush structure of the present invention.

[0018] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0019] Figure 7 This is a schematic diagram of the ratchet assembly of the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the swing rod in this invention.

[0021] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point B.

[0022] In the diagram: 101-Side wall panel; 102-Top cover plate; 103-Front panel; 104-Bottom dust discharge trough; 105-Rear support plate; 106-Protective cover; 107-Side cover plate; 108-Brush; 109-Flexible belt; 110-Edge drive roller; 111-First control motor; 112-Active actuating gear; 113-Passive actuating gear; 114-Second control motor; 115-Inner drive roller; 116-Inner transmission roller drive shaft; 117-Gearbox; 118-Air jet groove; 119-Air jet nozzle; 120-Air guide pipe; 121-Air pump; 122-Ratchet assembly; 123-Swing rod bracket; 124-Swing rod; 125-Magnetic positioning block; 126-Electromagnet; 127-Bottom limit plate; 128-Semi-circular drive disc; 129-Normally closed button; 130-Swing pin; 131-Connecting conductive contact. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-9 The technical solution of the present invention will be further illustrated through specific embodiments.

[0024] This invention provides a scoring device for table tennis matches, comprising two symmetrically arranged sidewalls 101. A top cover 102 and a bottom dust extraction trough 104 are fixedly fitted to the top of the two sidewalls 101. Multiple edge drive rollers 110 are rotatably mounted on the inner surfaces of the two sidewalls 101. An inner drive roller 115 is rotatably disposed between every two symmetrically arranged edge drive rollers 110. An inner drive roller drive shaft 116 is fixed at the axis of each inner drive roller 115. 16 extends from the axis of the edge drive roller 110 to the outer side of the side wall plate 101. The inner drive roller drive shaft 116 rotates with each of the edge drive rollers 110. Flexible belts 109 are driven and sleeved on all edge drive rollers 110 and inner drive rollers 115. There are four flexible belts 109 in total. The two outermost flexible belts 109 are engaged with the two sets of edge drive rollers 110 closest to the side wall plate 101, and the two innermost flexible belts 109 are engaged with the two sets of inner drive rollers 115 furthest from the side wall plate 101. One of the driving directions of all flexible belts 109 is a plane. A front panel 103 is provided on this plane for observing the numbers on the surface of the flexible belts 109. Each flexible belt 109 has a number combination of 0-9 on its surface. The bottom dust removal groove 104 is located on the lower surface of the flexible belt 109, and multiple brushes 108 are fixed on the bottom dust removal groove 104 or the two side wall plates 101. The brushes 108 contact and cooperate with the lower surface of all the flexible belts 109 to remove dust from the surface of the flexible belts 109. Side cover plates 107 are fixed on the opposite sides of the two side wall plates 101, and a second control motor 114 is fixed on each side cover plate 107. The output shafts of the two second control motors 114 are fixedly cooperated with the inner transmission roller drive shaft 116. Two symmetrically arranged first control motors 111 are fixed on the outer surface of the top cover plate 102. The output shafts of the two first control motors 111 are fixed with active actuating gears 112. Passive actuating gears 113, which are fixedly cooperated with the edge transmission rollers 110, are rotatably mounted on the opposite sides of the two side wall plates 101. The passive actuating gears 113 mesh with the active actuating gears 112 for transmission. A rear support plate 105 is fixedly mounted on the top cover plate 102 or the side cover plate 107. A protective cover 106 is fixed on the rear support plate 105. A swing rod 124 in a swinging state is provided on the inner side of the protective cover 106. A gearbox 117 and an air pump 121 are also fixed on the rear support plate 105. The drive shaft of the air pump 121 is directly and fixedly engaged with the output shaft of the gearbox 117. An air guide pipe 120 is fixedly connected to the exhaust port of the air pump 121. An air jet channel 118 is fixedly connected to the end of the air guide pipe 120 away from the air pump 121. The air jet channel 118 is located on the side of the bottom dust discharge channel 104, and an air jet nozzle 119 is opened on the air jet channel 118. The air jet nozzle 119 is used to blow out the dust that falls on the surface of the bottom dust discharge channel 104.A swing arm bracket 123 is fixedly mounted on the rear support plate 105, with a swing arm 124 rotatably mounted on the swing arm bracket 123. The input shaft of the gearbox 117 is connected to the swing arm 124 via a ratchet assembly 122. A semi-circular drive disk 128 is fixedly mounted on the swing arm bracket 123, and the semi-circular drive disk 128 is coaxially arranged with the ratchet assembly 122. A swing pin 130 is fixedly mounted on the swing arm 124, and the rotation axis of the swing pin 130 is the same as that of the ratchet assembly 122. A conductive contact 131 is provided at the center of the edge of the semi-circular drive disk 128, and the conductive contact 131 is conductively engaged with the end of the swing pin 130 to trigger the relay self-locking. Normally closed buttons 129 are fixedly provided at both ends of the bottom edge of the semi-circular drive disk 128 to engage with the swing pin 130, and are used to de-energize the relay and release the relay self-locking state. A magnetic positioning block 125 is fixed in the middle of the swing rod 124, and a bottom limiting plate 127 is fixed at the bottom end of the swing rod 124. An electromagnet 126 is arranged between the magnetic positioning block 125 and the bottom limiting plate 127. The electromagnet 126 is slidably sleeved on the swing rod 124. The electromagnet 126 and the magnetic positioning block 125 are magnetically engaged. The normally open contact of the relay is electrically connected to the electromagnet 126.

[0025] The working principle of the scoring device for table tennis matches disclosed in this invention is as follows: By controlling the first regulating motor 111 and the second regulating motor 114 at different positions, the output shaft of the first regulating motor 111 drives the active actuating gear 112 to rotate, the active actuating gear 112 drives the passive actuating gear 113 to rotate, the passive actuating gear 113 drives the edge transmission roller 110 to rotate, and then drives the corresponding flexible belt 109 to rotate, thereby moving the corresponding position number. Similarly, the output shaft of the second regulating motor 114 drives the corresponding inner transmission roller drive shaft 116 to rotate, the inner transmission roller drive shaft 116 drives its corresponding inner transmission roller 115 to rotate, and the inner... The drive roller 115 drives the corresponding flexible belt 109 to rotate. By rotating the flexible belt 109 at different positions, the position of the numbers on the flexible belt 109 changes, moving the required numbers to the front panel 103 for display. The four flexible belts 109 are divided into left and right sides (two flexible belts 109 on each side), so a two-digit score can be displayed. This device can be placed in a prominent position in the table tennis court, and the area of ​​the flexible belt 109 can be set to be large, making it easy for the audience to observe the score in a timely manner. At the same time, since there is no electronic screen for constant display, its power consumption only exists when the flexible belt 109 is rotating, thus reducing the overall energy consumption.

[0026] Since table tennis matches are not frequent, the equipment is mostly idle, and dust accumulates on the surface of the flexible tape 109, requiring regular cleaning. Currently, scoring in table tennis matches uses electronic screens, which can cause glare and obstruct the view for some spectators. This device, lacking glass, avoids this glare issue (the flexible tape 109 surface is not smooth). Furthermore, electronic screens attract more dust due to static electricity, which can obscure the displayed content. However, because this device lacks self-illuminating components, while a small amount of dust may accumulate on the flexible tape 109 after prolonged periods of inactivity, the absence of static electricity means it doesn't significantly affect the viewing experience. To ensure a clean viewing experience, the swing lever 124 needs to be swung (e.g., by using a lever stick or manually). During the swing, the electromagnet 126 will swing. The electromagnet 126 is positioned near the bottom limiting plate 127, thus lowering the center of gravity of the swing lever 124. As the swing lever 124 swings (the electromagnet 126 swings from its highest point to its lowest point), the pendulum needle 130 moves synchronously, contacting the conductive contact 131 and triggering the relay. The relay's normally open contact closes, energizing the electromagnet 126. The energized electromagnet 126 generates a magnetic force that attracts the magnetic positioning block 125. At this point, the swing position of the swing lever 124 is centered, and due to the electromagnetic... As the iron 126 moves toward the magnetic positioning block 125, the overall center of the swing rod 124 moves upward, which reduces the swing radius of the swing rod 124. With the same kinetic energy, a higher swing angle is obtained, allowing the pendulum needle 130 to contact the normally closed button 129. After the pendulum needle 130 contacts the normally closed button 129, the normally open contact of the relay will open (the iron core of the relay will be de-energized). At this time, the electromagnet 126 will contact the bottom limiting plate 127 under the action of gravity and centrifugal force during rotation. At this time, the overall center of the swing rod 124 will move downward again. When it reaches the lowest point, the pendulum needle 130 will contact the conductive contact 131 again. This process repeats, and the swing rod 124 will swing continuously until a person actively intervenes to block the swing of the swing rod 124 and stop it. The swing of the swing lever 124 will drive the input shaft of the gearbox 117 to rotate through the ratchet assembly 122. The output shaft of the gearbox 117 will drive the air pump 121 to start. The exhaust port of the air pump 121 will blow air into the jet groove 118 through the air guide pipe 120, and then blow it out through the jet port 119. At this time, the dust swept off the surface of the flexible belt 109 by the brush 108 will be blown away (the dust will fall onto the bottom dust discharge groove 104, and then be blown out along the bottom dust discharge groove 104).

Claims

1. A scoring device for table tennis competitions, characterized in that: The system includes two symmetrically arranged sidewalls (101), with a top cover plate (102) and a bottom dust discharge trough (104) fixedly fitted at the top and bottom of the two sidewalls (101), respectively. Multiple edge drive rollers (110) are rotatably mounted on the inner surfaces of the two sidewalls (101), and an inner drive roller (115) is rotatably mounted between each pair of symmetrically arranged edge drive rollers (110). An inner drive roller drive shaft (116) is fixed at the axis of each inner drive roller (115), and the inner drive roller drive shaft (116) passes through the edge drive rollers (110, 102, and 104). The axis of 0) is to the outside of the side wall plate (101), wherein the inner drive roller drive shaft (116) rotates with the edge drive roller (110) each, and all the edge drive rollers (110) and inner drive rollers (115) are equipped with flexible belts (109), wherein there are four flexible belts (109) in total, the two outermost flexible belts (109) are respectively engaged with the two sets of edge drive rollers (110) closest to the side wall plate (101), and the two innermost flexible belts (109) are respectively engaged with the two sets of inner drive rollers (115) far away from the side wall plate (101).

2. The scoring device for table tennis matches according to claim 1, characterized in that: One of the driving directions of all the flexible belts (109) is a plane, and a front panel (103) is provided on the plane for observing the numbers on the surface of the flexible belts (109). A combination of numbers 0-9 is provided on the surface of each flexible belt (109).

3. A scoring device for table tennis matches according to claim 2, characterized in that: The bottom dust removal groove (104) is located on the lower surface of the flexible belt (109), and multiple brushes (108) are fixed on the bottom dust removal groove (104) or the two side wall plates (101). The brushes (108) contact and cooperate with the lower surface of all the flexible belts (109) to remove dust from the surface of the flexible belts (109).

4. A scoring device for table tennis matches according to claim 3, characterized in that: Side cover plates (107) are fixed on the opposite sides of the two side wall plates (101), and a second control motor (114) is fixed on each side cover plate (107). The output shafts of the two second control motors (114) are fixedly engaged with the inner transmission roller drive shaft (116). Two symmetrically arranged first control motors (111) are fixed on the outer surface of the top cover plate (102). Active actuating gears (112) are fixed on the output shafts of the two first control motors (111). Passive actuating gears (113) that are fixedly engaged with the edge transmission roller (110) are rotatably installed on the opposite sides of the two side wall plates (101). The passive actuating gears (113) mesh with the active actuating gears (112) for transmission.

5. A scoring device for table tennis matches according to claim 4, characterized in that: A rear support plate (105) is fixedly mounted on the top cover plate (102) or the side cover plate (107). A protective cover (106) is fixedly mounted on the rear support plate (105). A swing rod (124) in a swing state is provided on the inner side of the protective cover (106). A gearbox (117) and an air pump (121) are also fixedly mounted on the rear support plate (105). The drive shaft of the air pump (121) is directly and fixedly connected to the output shaft of the gearbox (117). An air guide pipe (120) is fixedly connected to the exhaust port of the air pump (121). An air jet channel (118) is fixedly connected to the end of the air guide pipe (120) away from the air pump (121). The air jet channel (118) is located on the side of the bottom dust discharge channel (104). An air jet nozzle (119) is opened on the air jet channel (118). The air jet nozzle (119) is used to blow out the dust that falls on the surface of the bottom dust discharge channel (104).

6. A scoring device for table tennis matches according to claim 5, characterized in that: A swing arm bracket (123) is fixedly installed on the rear support plate (105), wherein the swing arm (124) is rotatably mounted on the swing arm bracket (123), and the input shaft of the gearbox (117) is connected to the swing arm (124) via a ratchet assembly (122).

7. A scoring device for table tennis matches according to claim 6, characterized in that: A semi-circular drive disk (128) is fixed on the swing arm bracket (123). The semi-circular drive disk (128) is coaxially arranged with the ratchet assembly (122). A swing pin (130) is fixedly installed on the swing arm (124). The rotation axis of the swing pin (130) is the same as that of the ratchet assembly (122). A connecting conductive contact (131) is provided at the center of the edge of the semi-circular drive disk (128). The connecting conductive contact (131) is electrically connected to the end of the swing pin (130) for triggering the relay self-locking.

8. A scoring device for table tennis matches according to claim 7, characterized in that: Both ends of the bottom edge of the semi-circular drive disk (128) are fixedly provided with normally closed buttons (129) that are in contact with the pendulum needle (130) to de-energize the relay and release the self-locking state of the relay.

9. A scoring device for table tennis matches according to claim 8, characterized in that: A magnetic positioning block (125) is fixed in the middle of the swing rod (124), and a bottom limiting plate (127) is fixed at the bottom end of the swing rod (124). An electromagnet (126) is provided between the magnetic positioning block (125) and the bottom limiting plate (127). The electromagnet (126) is slidably sleeved on the swing rod (124). The electromagnet (126) and the magnetic positioning block (125) are magnetically engaged. The normally open contact of the relay is electrically connected to the electromagnet (126).

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