Ball serving device and tennis automatic ball server

Abstract

The utility model discloses a kind of ball launching device and tennis automatic ball launching machine, it is related to ball launching equipment technical field, wherein, ball launching device includes slide assembly and ball launching wheel assembly, slide assembly is used to receive and transport tennis, slide assembly includes slide plate and two side plates, two side plates are respectively arranged at the both sides of slide plate, two side plates are all provided with rotatable adjusting plate;Ball launching wheel assembly includes driving part, pivot and ball launching wheel, pivot is sequentially worn in two adjusting plates, the first end and the second end of pivot respectively extend two adjusting plates, driving part is arranged in one of adjusting plate and is connected with the first end of pivot, the second end of pivot is provided with fixing part, and elastic member is arranged between fixing part and another adjusting plate.The utility model discloses technical scheme, by setting elastic member in the end of pivot, the vibration when pivot rotates can be slowed down.

Description

Technical Field

[0001] This utility model relates to the field of ball-serving equipment, and more particularly to a ball-serving device and an automatic tennis ball-serving machine. Background Technology

[0002] An automatic ball-serving machine is an automated device used to simulate a human serve, helping players practice hitting the ball without a partner or coach. For example, an automatic tennis ball-serving machine uses mechanical or electronic control to launch tennis balls at preset speeds, spins, frequencies, and landing points, serving as an important aid for players' independent practice. The serving mechanism, a crucial component of the automatic ball-serving machine, is primarily used to achieve accurate tennis ball launches. However, the serving mechanism exhibits noticeable vibrations during operation.

[0003] Therefore, it is necessary to provide a new ball-serving device and an automatic tennis ball-serving machine to solve the above-mentioned technical problems. Utility Model Content

[0004] The main purpose of this invention is to provide a ball-serving device and an automatic tennis ball-serving machine, which aims to solve the technical problem of significant vibration in ball-serving devices.

[0005] To achieve the above objectives, this utility model proposes a serving device, comprising:

[0006] A slide assembly for receiving and transporting tennis balls, the slide assembly including a slide plate and two side plates, the two side plates being respectively disposed on both sides of the slide plate, and each of the two side plates being provided with a rotatable adjustment plate;

[0007] A serve wheel assembly includes a drive component, a spindle, and a serve wheel. The spindle passes through two adjustment plates in sequence. The first and second ends of the spindle extend out of the two adjustment plates, respectively. The drive component is disposed on one of the adjustment plates and connected to the first end of the spindle. A fixing component is disposed at the second end of the spindle. An elastic component is disposed between the fixing component and the other adjustment plate.

[0008] In one embodiment, the elastic element is a helical spring.

[0009] In one embodiment, the fixing member includes a fixing rod and a baffle. The fixing rod is disposed at the second end of the rotating shaft, the baffle is disposed at the fixing rod, and the elastic member is disposed between the baffle and the corresponding adjusting plate.

[0010] In one embodiment, a limiting block is provided at the end of the fixed rod away from the rotating shaft; the baffle is slidably disposed on the fixed rod and can abut against the limiting block.

[0011] In one embodiment, at least a portion of the baffle has a length in the radial direction of the rotating shaft that is greater than the diameter of the rotating shaft.

[0012] In one embodiment, the baffle is a circular plate, and the diameter of the baffle is larger than the diameter of the rotating shaft.

[0013] In one embodiment, the fixing member is a fixing rod, which passes through the second end of the rotating shaft. The central axis of the fixing rod intersects with or is not in the same plane as the central axis of the rotating shaft. An elastic element is provided between the fixing rod and the corresponding adjusting plate; or,

[0014] The fixing member is a baffle, which is disposed at the second end of the rotating shaft and integrally formed with the rotating shaft. The elastic member is disposed between the baffle and the corresponding adjusting plate.

[0015] In one embodiment, each of the side plates is provided with a flange bearing, and the rotating shaft passes through the flange bearing.

[0016] In one embodiment, there are two serving wheel assemblies, which are spaced apart along the conveying direction of the slide assembly, and a serving opening is provided between the two serving wheel assemblies; the two driving members drive the two rotating shafts to rotate in opposite directions.

[0017] In addition, this utility model also proposes an automatic tennis ball serving machine, comprising:

[0018] A frame having a ball inlet;

[0019] As described above, in the ball-serving device, the slide assembly is configured correspondingly to the ball inlet.

[0020] The technical solution of this utility model, by setting an elastic element at the end of the rotating shaft, can reduce the vibration during the rotation of the rotating shaft, thereby improving the landing accuracy of the tennis ball when launched by the automatic tennis ball serving machine; at the same time, it can also eliminate axial clearance and ensure the axial position stability of the rotating shaft. In this embodiment, the slide assembly is used to receive and transport the ball; by setting a rotatable adjustment plate on the side plate of the slide assembly, the position of the serving wheel assembly can be adjusted, thereby adjusting the orientation of the serving nozzle. The serving wheel assembly includes a drive component, a rotating shaft, and a serving wheel, wherein the drive component drives the serving wheel to rotate through the rotating shaft, thereby pushing the tennis ball to achieve automatic launch of the tennis ball. The drive component is set on one of the adjustment plates and connected to the first end of the rotating shaft, and the fixing component is set on the second end of the rotating shaft, that is, the fixing component is set on the end of the rotating shaft away from the drive component, and an elastic element is set between the fixing component and the corresponding adjustment plate; wherein, the elastic element can absorb the impact and vibration generated when the rotating shaft rotates, thereby reducing the vibration during the rotation of the rotating shaft, and thus improving the landing accuracy of the tennis ball when launched by the automatic tennis ball serving machine. Meanwhile, the elastic element can also provide axial preload, eliminate axial clearance between various transmission components, reduce axial movement of the shaft, and ensure stable axial position of the shaft. This ball-serving device is used in automatic ball-serving machines for tennis, table tennis, and other ball games. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the serving device in one embodiment of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0024] Figure 3 A cross-sectional view of the second end of the rotating shaft in one embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of the second end of the rotating shaft in another embodiment of this utility model;

[0026] Figure 5 A cross-sectional view of the second end of the rotating shaft in another embodiment provided by this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the automatic tennis ball serving machine provided by this utility model.

[0028] Explanation of icon numbers:

[0029] 100. Slide assembly; 110. Flange bearing; 120. Slide plate; 130. Side plate; 200. Serve wheel assembly; 210. Drive component; 220. Rotating shaft; 230. Serve wheel; 240. Serve inlet; 300. Fixing component; 310. Fixing rod; 311. Limiting block; 320. Baffle; 400. Elastic component; 500. Automatic tennis ball serving machine; 510. Frame; 511. Ball inlet; 520. Serve device.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] An automatic ball-serving machine is an automated device used to simulate a human serve, helping players practice hitting the ball without a partner or coach. For example, an automatic tennis ball-serving machine uses mechanical or electronic control to launch tennis balls at preset speeds, spins, frequencies, and landing points, serving as an important aid for players' independent practice. During actual research and testing, researchers discovered that the serving device experiences significant vibrations during operation. These vibrations cause deviations in the ball's trajectory, affecting the accuracy of the landing point when the tennis ball is launched.

[0036] This utility model proposes a ball-serving device and an automatic tennis ball-serving machine, aiming to solve the technical problem of significant vibration in ball-serving devices.

[0037] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the serving device 520 includes a slide assembly 100 and a serving wheel assembly 200. The slide assembly 100 is used to receive and transport tennis balls. The slide assembly 100 includes a slide plate 120 and two side plates 130. The two side plates 130 are respectively disposed on both sides of the slide plate 120. Each side plate 130 is provided with a rotatable adjusting plate 131. The serving wheel assembly 200 includes a drive member 210, a rotating shaft 220 and a serving wheel 230. The rotating shaft 220 passes through the two adjusting plates 131 in sequence. The first end and the second end of the rotating shaft 220 extend out of the two adjusting plates 131 respectively. The drive member 210 is disposed on one of the adjusting plates 131 and connected to the first end of the rotating shaft 220. The second end of the rotating shaft 220 is provided with a fixing member 300. An elastic member 400 is disposed between the fixing member 300 and the other adjusting plate 131.

[0038] The technical solution of this utility model, by providing an elastic element 400 at the end of the rotating shaft 220, can reduce the vibration of the rotating shaft 220 during rotation, thereby improving the landing accuracy of the tennis ball when the automatic tennis ball serving machine launches the ball; at the same time, it can also eliminate axial clearance and ensure the axial position stability of the rotating shaft 220. In this embodiment, the slide assembly 100 is used to receive and transport the tennis ball; by providing a rotatable adjusting plate 131 on the side plate 130 of the slide assembly 100, the position of the serving wheel assembly 200 can be adjusted, thereby adjusting the orientation of the serving port 240. The serving wheel assembly 200 includes a driving member 210, a rotating shaft 220, and a serving wheel 230, wherein the driving member 210 drives the serving wheel 230 to rotate through the rotating shaft 220, thereby pushing the tennis ball and realizing the automatic launch of the tennis ball. A drive component 210 is disposed on one of the adjusting plates 131 and connected to the first end of the rotating shaft 220. A fixing component 300 is disposed at the second end of the rotating shaft 220, that is, at the end of the rotating shaft 220 away from the drive component 210. An elastic component 400 is disposed between the fixing component 300 and the corresponding adjusting plate 131. The elastic component 400 can absorb the impact and vibration generated when the rotating shaft 220 rotates, thereby reducing the vibration when the rotating shaft 220 rotates and improving the landing accuracy of the tennis ball when the automatic tennis ball serving machine launches the ball. At the same time, the elastic component 400 can also provide axial preload, eliminate the axial clearance between the various transmission components, reduce the axial movement of the rotating shaft 220, and ensure the axial position stability of the rotating shaft 220. This ball serving device 520 is applied to automatic ball serving machines for tennis balls 500, automatic ball serving machines for table tennis, and other ball games.

[0039] In this embodiment, the drive component 210 can be a brushless motor. Brushless motors are small in size, which can effectively reduce the size of the ball-serving device 520 and make the structure of the ball-serving device 520 more compact. In addition, in this embodiment, the rotating shaft 220 is directly connected to the rotor of the brushless motor. During assembly, there is no need to use a coupling to connect the drive component 210 and the rotating shaft 220, which can simplify the structure of the ball-serving device 520 and reduce the assembly difficulty.

[0040] In one embodiment of this utility model, the elastic element 400 is a helical spring. In this embodiment, a helical spring is chosen as the elastic element 400 because it has the advantages of simple structure, easy availability, and low manufacturing cost, which simplifies the structure of the ball-serving device 520 and reduces manufacturing costs. Alternatively, rubber elastic elements, metal bellows, leaf springs, etc., can also be used.

[0041] Please see Figure 2 and Figure 3In one embodiment of this utility model, the fixing member 300 includes a fixing rod 310 and a baffle 320. The fixing rod 310 is disposed at the second end of the rotating shaft 220, and the baffle 320 is disposed at the fixing rod 310. An elastic member 400 is disposed between the baffle 320 and the corresponding adjusting plate 131. In this embodiment, the baffle 320 is installed at the second end of the rotating shaft 220 via the fixing rod 310, and the elastic member 400 is disposed between the baffle 320 and the corresponding adjusting plate 131. This design features a simple structure and can reduce the manufacturing difficulty of the ball-serving device 520. In a specific embodiment, when the elastic member 400 is a helical spring, the rotating shaft 220 passes through the helical spring to provide guidance. The second end of the rotating shaft 220 has a threaded hole extending along its axial direction, and one end of the fixing rod 310 is threaded into the threaded hole. By using a threaded connection to install the fixing rod 310 at the second end of the rotating shaft 220, the manufacturing difficulty of the ball-serving device 520 can be simplified and reduced. In another specific embodiment, the fixing plate is welded to the second end of the rotating shaft 220, and the baffle 320 is welded to the fixing plate.

[0042] Please see Figure 2 and Figure 3 In one embodiment of this utility model, a limiting block 311 is provided at the end of the fixing rod 310 away from the rotating shaft 220; the baffle 320 is slidably disposed on the fixing rod 310 and can abut against the limiting block 311. In this embodiment, the limiting block 311 is used to limit the position of the baffle 320 to prevent the baffle 320 from disengaging from the fixing rod 310. In a specific embodiment, the structure formed by connecting the fixing rod 310 and the limiting block 311 can be a bolt.

[0043] Please see Figure 3 In one embodiment of this utility model, at least a portion of the baffle 320 has a length in the radial direction of the rotating shaft 220 that is greater than the diameter of the rotating shaft 220. In this embodiment, by ensuring that at least a portion of the baffle 320 has a length in the radial direction of the rotating shaft 220 that is greater than the diameter of the rotating shaft 220, the reliability of the elastic element 400 installed between the baffle 320 and the corresponding side plate 130 can be ensured. In a specific embodiment, the baffle 320 is a circular plate, and the diameter of the baffle 320 is greater than the diameter of the rotating shaft 220. Alternatively, the baffle 320 can also be a square plate, a rectangular plate, or other polygonal plates, as long as at least a portion of the baffle 320 has a length in the radial direction of the rotating shaft 220 that is greater than the diameter of the rotating shaft 220. It should be noted that, to ensure the reliability of the installation of the elastic element 400, the length of the baffle 320 in the radial direction of the rotating shaft 220 should be greater than the diameter of the selected elastic element 400.

[0044] Please see Figure 4In another embodiment of this utility model, in addition to the structure described above, the fixing member 300 can also be a fixing rod 310 passing through the rotating shaft 220 in the radial direction. Specifically, the fixing member 300 is a fixing rod 310, which passes through the second end of the rotating shaft 220. The central axis of the fixing rod 310 intersects with or is not in the same plane as the central axis of the rotating shaft 220. An elastic element 400 is provided between the fixing rod 310 and the corresponding adjusting plate 131. In a specific embodiment, the central axis of the fixing rod 310 is perpendicular to the central axis of the rotating shaft 220. Please refer to [link to relevant documentation]. Figure 5 In another embodiment of this utility model, the fixing member 300 can also be a baffle 320 integrally formed with the rotating shaft 220. Specifically, the fixing member 300 is a baffle 320, which is disposed at the second end of the rotating shaft 220 and integrally formed with the rotating shaft 220. An elastic member 400 is provided between the baffle 320 and the corresponding adjusting plate 131.

[0045] Please see Figure 1 In one embodiment of this utility model, to ensure the stability of the rotating shaft 220 during rotation, each side plate 130 is provided with a flange bearing 110 through which the rotating shaft 220 passes. Specifically, each side plate 130 is provided with a flange bearing 110, the rotating shaft 220 passes through the flange bearing 110, and the elastic element 400 is disposed between the fixing element 300 and the corresponding flange bearing 110. The flange bearing 110 has its own flange, which can be directly fixed to the side plate 130 with bolts, effectively limiting the radial position of the rotating shaft 220 and slowing down the radial movement of the rotating shaft 220.

[0046] Please see Figure 1 In one embodiment of this utility model, there are two serve wheel assemblies 200, which are spaced apart along the conveying direction of the slide assembly 100, and a serve opening 240 is provided between the two serve wheel assemblies 200; two drive members 210 drive two rotating shafts 220 to rotate in opposite directions. In this embodiment, the two serve wheel assemblies 200 are spaced apart along the conveying direction of the slide assembly 100, and a serve opening 240 is provided between the two serve wheel assemblies 200. The two drive members 210 are used to drive the two rotating shafts 220 to rotate in opposite directions, thereby driving the two serve wheels 230 to rotate in opposite directions, so as to push the tennis ball and launch it from the serve opening 240.

[0047] This utility model also proposes an automatic tennis ball serving machine 500; please refer to [link / reference]. Figure 6The automatic tennis ball serving machine 500 includes the aforementioned serving device 520. The specific structure of the serving device 520 is as described in the above embodiments. Since the automatic tennis ball serving machine 500 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The automatic tennis ball serving machine 500 also includes a frame 510, which is provided with a ball inlet 511. The slide assembly 100 is correspondingly provided with the ball inlet 511 to ensure that the tennis ball falling from the ball inlet 511 can accurately fall into the slide assembly 100.

[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A serving device, characterized in that, include: A slide assembly for receiving and transporting tennis balls, the slide assembly including a slide plate and two side plates, the two side plates being respectively disposed on both sides of the slide plate, and each of the two side plates being provided with a rotatable adjustment plate; A serve wheel assembly includes a drive component, a spindle, and a serve wheel. The spindle passes through two adjustment plates in sequence. The first and second ends of the spindle extend out of the two adjustment plates, respectively. The drive component is disposed on one of the adjustment plates and connected to the first end of the spindle. A fixing component is disposed at the second end of the spindle. An elastic component is disposed between the fixing component and the other adjustment plate.

2. The serving device as described in claim 1, characterized in that, The elastic element is a helical spring.

3. The serving device as described in claim 1, characterized in that, The fixing component includes a fixing rod and a baffle. The fixing rod is disposed at the second end of the rotating shaft, the baffle is disposed at the fixing rod, and the elastic element is disposed between the baffle and the corresponding adjusting plate.

4. The serving device as described in claim 3, characterized in that, A limit block is provided at one end of the fixed rod away from the rotating shaft; the baffle is slidably disposed on the fixed rod and can abut against the limit block.

5. The serving device as described in claim 3, characterized in that, At least a portion of the baffle has a length in the radial direction of the rotating shaft that is greater than the diameter of the rotating shaft.

6. The serving device as described in claim 5, characterized in that, The baffle is a circular plate, and the diameter of the baffle is larger than the diameter of the rotating shaft.

7. The serving device as described in claim 1, characterized in that, The fixing element is a fixing rod, which passes through the second end of the rotating shaft. The central axis of the fixing rod intersects with or is not in plane with the central axis of the rotating shaft. An elastic element is provided between the fixing rod and the corresponding adjusting plate; or... The fixing member is a baffle, which is disposed at the second end of the rotating shaft and integrally formed with the rotating shaft. The elastic member is disposed between the baffle and the corresponding adjusting plate.

8. The serving device as described in any one of claims 1 to 7, characterized in that, Each of the side plates is provided with a flange bearing, the rotating shaft passes through the flange bearing, and the elastic element is disposed between the fixing element and the corresponding flange bearing.

9. The serving device as claimed in any one of claims 1 to 7, characterized in that, The number of the serving wheel assemblies is two, and the two serving wheel assemblies are arranged at intervals along the conveying direction of the slide assembly, with a serving opening provided between the two serving wheel assemblies; the two driving members drive the two rotating shafts to rotate in opposite directions.

10. An automatic tennis ball serving machine, characterized in that, include: A frame having a ball inlet; The ball-serving device as described in any one of claims 1 to 9, wherein the slide assembly is provided corresponding to the ball inlet.

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