Tennis training partner robot

Abstract

The tennis partner training robot comprises a main body, and a ball rotating barrel is arranged at the top end of the main body; the ball receiving mechanism is arranged above the main body and comprises a support frame fixed at the top of the main body; the net bag is arranged on the supporting frame and / or the main body through a fastener; the ball receiving plate is arranged on the supporting frame, a through hole communicated with the ball rotating cylinder is formed in the ball receiving plate, and a height difference exists between the outer edge of the ball receiving plate and the through hole. The ball receiving plate can effectively isolate the net bag from the ball rotating barrel, so that the possibility that the tennis ball falls down and collides with the lower tennis ball to pop out is avoided or reduced, and the ball receiving success rate of the ball receiving mechanism is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent sports equipment, in particular to a tennis training robot. BACKGROUND

[0002] The tennis industry is in a state of vigorous development, especially in some developed countries and regions. However, the entry threshold of tennis is high, and it is very low for beginners to play several rounds directly for the first time. Tennis learners often lose their sports enthusiasm quickly and stop at the entry stage due to the lack of long-term stable technical training, unskilled techniques, inability to control the landing point of the tennis ball, difficulty in forming effective round play, and frequent picking up of the ball in the court. With the advent of tennis robots, the above-mentioned problems seem to usher in a solution.

[0003] In the related art, after the tennis robot receives the tennis ball with the net, the tennis ball has a high gravitational potential during the downward movement along the net. When the descending tennis ball collides with the tennis ball below (located in the storage cavity), the tennis ball is easily bounced out of the net, thereby reducing the probability of the robot receiving the tennis ball. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a tennis training robot to solve the problem that the tennis ball is easily bounced out of the net due to collision with the stored tennis ball during the receiving process.

[0005] A tennis training robot, comprising:

[0006] a main body, the main body being provided with a ball rotating cylinder;

[0007] a ball receiving mechanism arranged above the main body, the ball receiving mechanism comprising:

[0008] a support frame fixed to the top of the main body;

[0009] a net arranged on the support frame and / or the main body;

[0010] a ball receiving plate arranged on the support frame, the ball receiving plate being configured with a through hole communicating with the ball rotating cylinder, and the outer edge of the ball receiving plate having a height difference with the through hole.

[0011] In one embodiment, the ball receiving plate is arranged on the support frame, and a ball storage cavity is formed between the ball receiving plate and the ball rotating cylinder, the ball storage cavity being in communication with a plurality of ball storage grooves of the ball rotating cylinder.

[0012] In one embodiment, the height of the ball storage cavity in the vertical direction is greater than or equal to the diameter of the tennis ball.

[0013] In one of the embodiments, a cushion pad is arranged on the ball receiving plate to reduce the rebound height of the tennis ball falling from the net bag to the ball receiving plate.

[0014] In one of the embodiments, the ball receiving plate is arranged to be inclined from the outer edge to the through hole, and the ball receiving plate has a preset included angle with the horizontal plane.

[0015] In one of the embodiments, the through hole is circular, and the ratio of the through hole to the diameter of the tennis ball is 1-2.5.

[0016] In one of the embodiments, the net bag comprises a rear net, the rear net forms a ball receiving chamber with an opening, and the bottom of the rear net is arranged around at least part of the edge of the ball receiving plate.

[0017] The rear net is provided with a plurality of skeletons, and the end of the skeleton is fixed to the support frame by a fastener.

[0018] In one of the embodiments, the net bag further comprises a front net, the front net is hung in the ball receiving chamber, and the front net has a spacing with the rear net in the direction of ball receiving.

[0019] In one of the embodiments, the tennis ball training robot further comprises:

[0020] A blocking net is arranged on part of the edge of the ball receiving plate outside the rear net, and the height of the blocking net is less than the height of the rear net.

[0021] In one of the embodiments, the main body comprises a shell, a chassis mechanism and a ball launching mechanism, the chassis mechanism is installed at the bottom of the shell, the ball launching mechanism is installed inside the shell, the ball rolling cylinder is installed at the top of the shell, and the ball launching mechanism is configured to receive the tennis ball released from the ball rolling cylinder and launch the tennis ball.

[0022] The tennis ball training robot has the advantages that the support frame is arranged at the top of the main body to support the net bag and the ball receiving plate, the through hole is arranged on the ball receiving plate, the edge of the ball receiving plate is arranged to be inclined to the through hole, the tennis ball on the ball receiving plate is rolled to the through hole to enter the ball rolling cylinder, the ball receiving plate can effectively isolate the net bag and the ball rolling cylinder, and the possibility of the tennis ball falling and colliding with the tennis ball launched from below is avoided or slowed down, thereby improving the success rate of the ball receiving mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The overall structure of the tennis ball training robot according to some embodiments of the present application is shown.

[0024] Figure 2Structure schematic diagram of ball receiving mechanism provided according to some embodiments of the present application.

[0025] Figure 3 Front view structure schematic diagram of ball receiving mechanism provided according to some embodiments of the present application.

[0026] Figure 4 For Figure 3 Structure schematic diagram of section A-A.

[0027] Figure 5 For Figure 4 Local structure enlarged schematic diagram in

[0028] Reference signs:

[0029] 10, main body; 11, ball rotating cylinder; 111, ball storage groove; 12, outer shell; 13, base plate mechanism; 14, ball launching mechanism;

[0030] 20, ball receiving mechanism; 210, support frame; 220, net bag; 221, rear net; 2211, opening; 223, framework; 222, front net; 230, ball receiving plate; 231, through hole; 240, net blocking; 250, ball storage cavity;

[0031] 30, tennis ball. DETAILED DESCRIPTION

[0032] In order to make the above objectives, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, if there are these terms "first", "second", these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0035] In the present application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0037] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If there is, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration, and do not represent the only implementation.

[0038] As can be understood from the background, the tennis robot can play against the user, that is, it needs to have the functions of receiving and serving the ball, and the ball is usually received by a net. When the net receives the tennis ball, the tennis ball has a high gravitational potential energy during its downward movement. When the descending tennis ball collides with the tennis ball below (located in the storage cavity), it is easy to cause the tennis ball to be bounced out of the net, thereby reducing the probability of the robot receiving the tennis ball.

[0039] Based on the above problems, the tennis training robot is provided to improve the success probability of the robot in catching the ball. Referring to Figure 1 and Figure 2 , the overall structure of the tennis training robot provided according to some embodiments of the present application is shown in the figure, Figure 1 the structure of the ball catching mechanism provided according to some embodiments of the present application is shown in the figure. The tennis training robot provided by an embodiment of the present application can include a main body 10 and a ball catching mechanism 20, and the ball catching mechanism 20 can include a support frame 210, a net bag 220 and a ball catching plate 230. Figure 2 The main body 10 is provided with a ball rotating cylinder 11; the ball catching mechanism 20 is arranged above the main body 10. The support frame 210 is fixed to the top of the main body 10; the net bag 220 is arranged on the support frame 210 and / or the main body 10; the ball catching plate 230 is arranged on the support frame 210, and the ball catching plate 230 is configured with a through hole 231 communicating with the ball rotating cylinder 11, and the outer edge of the ball catching plate 230 has a height difference at the through hole 231.

[0040] It can be understood that the ball rotating cylinder 11 is internally provided with a plurality of ball storage grooves 111, and the plurality of ball storage grooves 111 are exposed on the top of the main body 10, each ball storage groove 111 can accommodate a tennis ball 30, and the main body 10 below the ball rotating cylinder 11 is also provided with an opening and closing device, when any ball storage groove 111 rotates with the ball rotating cylinder 11 to the opening and closing device, the opening and closing device is opened, so that the tennis ball 30 in the ball storage groove 111 is transmitted from the storage state to the ball launching mechanism 14 below, thereby ensuring the continuity and immediacy of the ball launching.

[0041] The ball catching mechanism 20 of the present example is arranged above the main body 10 and communicates with the ball rotating cylinder 11, especially the ball storage groove 111, so as to finally store the caught tennis ball 30 in the ball storage groove 111. The ball catching mechanism 20 mainly includes a support frame 210 for supporting the main part thereof, and the support frame 210 can be adapted to the shape of the top of the main body 10, for example, the top of the main body 10 is square, the support frame 210 can be set to the same size and shape of square, and the periphery of the support frame 210 can be fixed to the main body 10 by bolt connection, welding or the like. Of course, the support frame 210 in the present example can also be formed integrally with the main body 10, or it can also be understood that the support frame 210 is part of the main body 10, which is conducive to the stable fixation of the support frame 210 arranged on the main body 10, and also conducive to the overall external beauty of the robot.

[0042]

[0043] ​The net 220 in the ball receiving mechanism 20 is used to receive the tennis ball 30 hit by the player. In order to improve the stability of the net 220 when it is impacted by the tennis ball 30, the net 220 can be arranged on the support frame 210 or the main body 10, or both the support frame 210 and the main body 10. The net 220 can be fixedly connected to the main body 10 or the support frame 210 by means of screw connection, welding, or adhesion. Alternatively, the net 220 can be detachably connected to the main body 10 or the support frame 210 by means of buckles or zippers, so as to facilitate replacement of the net 220. The fastening means can ensure that the net 220 is firmly fixed to the main body 10 or the support frame 210, thereby improving the stability and effectiveness of the ball receiving.

[0044] The net 220 can be made of a slow-rebound material or other material having a buffering function. The net 220 can buffer the incoming tennis ball 30, so that the tennis ball 30 loses or reduces its speed, and then slides down the net 220 or slides down in a small parabolic manner. The ball receiving plate 230 arranged on the support frame 210 can isolate the ball turning cylinder 11 below the ball receiving plate 230, so that the falling tennis ball 30 first contacts the ball receiving plate 230, and then enters the ball turning cylinder 11 through the through hole 231 of the ball receiving plate 230.

[0045] More specifically, the lower end of the net 220 is generally arranged around the edge of the ball receiving plate 230, so that the tennis ball 30 buffered by the net 220 falls in the area corresponding to the ball receiving plate 230. In this example, the ball receiving plate 230 is arranged as a soft plate having a buffering function, so as to absorb the gravitational potential energy of the falling tennis ball 30, thereby reducing the rebound height of the tennis ball 30 at the ball receiving plate 230. Of course, in order to further reduce the rebound height of the tennis ball 30, a buffering pad can be arranged on the ball receiving plate 230, so as to reduce the rebound height of the tennis ball 30 falling from the net 220 to the ball receiving plate 230. Specifically, the buffering pad can be made of a slow-rebound sponge or other material having a buffering function. The slow-rebound sponge has the ability to slowly deform, and slowly returns to its original shape after being deformed by an external force. In this example, the slow-rebound sponge is used to absorb the kinetic energy of the falling tennis ball 30, and the arrangement of the buffering pad can make the rebound height of the tennis ball 30 at the ball receiving plate 230 approach zero.

[0046] In order to facilitate the tennis ball to continue to roll along the ball receiving plate 230 to the ball turning cylinder after falling on the ball receiving plate 230, the ball receiving plate 230 can be arranged to be inclined, i.e., the outer edge of the ball receiving plate 230 has a height difference to the through hole 231, and a slope is formed from the outer edge of the ball receiving plate 230 to the through hole. The slope can make the tennis ball falling on the ball receiving plate 230 quickly roll into the through hole 231.

[0047] It should be noted that the surface of the ball receiving plate 230 can be a plane or an arc surface, and the friction coefficient of the buffer pad laid thereon can enable the tennis ball 30 to roll to the through hole 231. The shape and size of the through hole 231 are not limited herein. The through hole 231 can be rectangular, oval, triangular, polygonal or circular, and the inner diameter thereof can be slightly larger than the diameter of the tennis ball 30, so that one tennis ball 30 passes through at a time, or the diameter of the tennis ball 30 is more than twice, to avoid the problem of blocking of two or more tennis balls 30 at the through hole 231.

[0048] In the present application, the support frame 210 is arranged on the top of the main body 10 to support the mesh 220 and the ball receiving plate 230, and the through hole 231 is arranged on the ball receiving plate 230. The edge of the ball receiving plate 230 is arranged obliquely to the through hole 231, which facilitates the rolling of the tennis ball 30 on the ball receiving plate 230 to the through hole 231 to enter the ball rotating cylinder 11. The ball receiving plate 230 arranged in the present example can effectively isolate the mesh 220 from the ball rotating cylinder 11, thereby avoiding or slowing down the possibility of the tennis ball 30 falling and colliding with the tennis ball ejected from below, so as to improve the success rate of the ball receiving mechanism.

[0049] In the following, the present application will be described in detail with reference to the accompanying drawings. Figure 1 -Appendix Figure 5 The specific structure of the tennis ball training robot provided by the embodiments of the present application will be introduced.

[0050] In combination with Figures 2-5 as shown, Figure 3 is a front view structural schematic diagram of the ball receiving mechanism provided according to some embodiments of the present application. Figure 4 is Figure 3 is a sectional view structural schematic diagram of A-A in the figure. Figure 5 is Figure 4 is a partial structure enlarged schematic diagram in the figure. In some embodiments, the ball receiving plate 230 is arranged on the support frame 210, and the ball receiving plate 230 and the ball rotating cylinder 11 form a ball storage cavity 250, which is in communication with the plurality of ball storage grooves 111 of the ball rotating cylinder 11.

[0051] Specifically, the support frame 210 is a back-shaped structure with a certain thickness, and the support frame 210 has a certain height, so that after the ball receiving plate 230 is arranged on the top of the support frame 210 (or arranged at the middle position of the support frame 210), a space is left below the ball receiving plate 230 and above the ball rolling cylinder 11, which is the ball storage cavity 250. It is further understood that the ball rolling cylinder 11 is usually provided with 4-6 ball storage grooves 111. Since the number of ball storage grooves 111 is limited, the example forms a ball storage cavity 250 by surrounding the ball receiving plate 230, the side of the support frame 210, the top of the main body 10 and the top end of the ball rolling cylinder 11. The ball storage cavity 250 is used for temporarily storing balls, that is, the tennis balls 30 in the ball storage cavity 250 are stacked above the tennis balls 30 in the ball rolling cylinder 11 and rotate with the ball rolling cylinder 11. The tennis balls 30 in the ball storage cavity 250 can timely supplement the tennis balls 30 in the ball storage grooves 111 of the ball rolling cylinder 11. When the ball storage grooves 111 all contain tennis balls 30, this arrangement can effectively avoid the newly received tennis balls 30 staying outside the ball receiving plate 230 (at the through hole 231), thereby avoiding or slowing down the problem of the tennis balls 30 bouncing when the next tennis ball 30 falls and collides with the tennis balls 30 at the through hole 231.

[0052] As shown in Figure 4 In some embodiments, the height of the ball storage cavity 250 in the vertical direction is greater than or equal to the diameter of the tennis ball 30.

[0053] Specifically, the height of the ball storage cavity 250 in the vertical direction specifically refers to the distance from the through hole 231 to the top of the ball rolling cylinder 11. This part of the height can be slightly larger than the diameter of the tennis ball 30. In other words, the ball storage cavity 250 can accommodate a layer of tennis balls 30. This arrangement can effectively save the volume of the ball receiving mechanism 20 and provide sufficient space for temporary ball storage.

[0054] As shown in Figure 4 and Figure 5 In some embodiments, the ball receiving plate 230 is arranged obliquely from the outer edge to the through hole 231, and the ball receiving plate 230 has a preset included angle with the horizontal plane.

[0055] Specifically, the above-mentioned preset included angle is used to represent the inclination degree of the ball receiving plate 230, and the inclination degree of the ball receiving plate 230 needs to be measured and set according to the friction coefficient of the cushion on it. If the friction coefficient is large, the inclination degree of the ball receiving plate 230 can be increased to increase the speed of the tennis ball 30 rolling to the through hole 231, so as to avoid the interference between the tennis ball 30 and the next received tennis ball 30, and the problem of the tennis ball 30 being blocked at the through hole 231. For example, the preset included angle is used to represent the inclination angle of the ball receiving plate 230 from the outer edge to the inner edge (the through hole 231), and the inclination angle is between 5°-40°. For example, it can be 5°, 10°, 15°, etc.

[0056] like Figure 2 As shown, in some embodiments, the ratio of the inner diameter of the circular through-hole 231 to the diameter of the tennis ball 30 is 1-2.5. Specifically, the diameter of the circular through-hole 231 can be set to be the same as the diameter of the tennis ball 30, that is, the through-hole 231 only allows one tennis ball 30 to pass through at a time. This setting can effectively avoid or reduce the situation where the falling tennis ball 30 directly enters the through-hole 231. Even if the falling tennis ball 30 enters the ball storage cavity 250 directly through the through-hole 231 and has a large rebound height, due to the deviation of the rebound angle and the small diameter of the through-hole 231, it is difficult for the tennis ball 30 to bounce out of the ball storage cavity 250 again.

[0057] Of course, the diameter of the through hole 231 can also be larger than the diameter of the tennis ball 30. For example, it can be slightly larger than the diameter of the tennis ball 30, equal to the diameter of two tennis balls 30, or slightly larger than the diameter of two tennis balls 30. Taking the example of the through hole 231 being slightly larger than the diameter of two tennis balls 30, since the tennis balls 30 move at high speed, there is a situation where the receiving mechanism 20 receives one tennis ball 30, but before that tennis ball 30 has passed through the through hole 231, it receives the next tennis ball 30. This situation can easily lead to two tennis balls 30 blocking the through hole 231. Therefore, setting a through hole 231 with a larger diameter can effectively solve this problem.

[0058] like Figure 2 As shown, in some embodiments, the net 220 includes a rear net 221, which has a ball-receiving chamber with an opening 2211. The bottom of the rear net 221 is arranged around at least a portion of the edge of the ball-receiving plate 230. The rear net 221 is provided with a plurality of skeletons 223, the ends of which are fixed to the support frame 210 by fasteners.

[0059] Specifically, the multiple frames 223 provide a stable frame for the back net 221, ensuring that the net bag 220 can effectively catch the tennis ball 30. The back net 221 is usually designed to be suitable for catching the tennis ball 30. The plane formed by its opening 2211 is inclined from the vertical direction to the rear of the ball to increase the size of the opening 2211, making it easier to catch the tennis ball 30 falling from the air and ensuring that the tennis ball 30 can smoothly slide down to the through hole 231 of the ball stop plate to collect the tennis ball 30.

[0060] The structure of the back net 221 can be similar to the cloak of a cart, but the bottom of the back net 221 needs to be reduced to fit the edge of the receiving plate 230, so that the received tennis ball 30 can slide down the back net 221 onto the receiving plate 230.

[0061] In addition, the fasteners for fixing the frame 223 can be bolts, or clips, buckles, etc., to facilitate installation and disassembly.

[0062] To achieve the double buffering of the net 220, as shown in some embodiments, the net 220 further comprises a front net 222, which is hung in the ball receiving chamber and has a spacing between the front net 222 and the rear net 221 along the direction of the ball receiving. Figure 4

[0063] Specifically, the material of the front net 222 can be the same or similar to that of the rear net 221, for example, made of sponge material or material with buffering function, of course, can also be made of cloth, etc. The front net 222 is hung in the ball receiving chamber, and the specific way can be that the top end of the front net 222 is fixed on the framework 223 or fixed on the rear net 221, but no matter what kind of hanging way, it is necessary to make the front net 222 and the rear net 221 have a spacing. When the ball comes, the front net 222 first buffers the tennis ball 30, when the tennis ball 30 moves too fast, the tennis ball 30 will continue to move with the front net 222 to the rear net 221, and the tennis ball 30 will be in a state of free fall along the front net 222 to the ball receiving plate 230.

[0064] It should be noted that the spacing between the front net 222 and the rear net 221 can be determined according to the actual use and the material selection of the net 220, which is not limited here.

[0065] As shown in Figure 2 and Figure 4 In some embodiments, the tennis partner robot further comprises a net 240, which is arranged at the edge of the ball receiving plate 230 outside the rear net 221, and the height of the net 240 is less than that of the rear net 221.

[0066] It can be understood that the height of the net 240 can be much smaller than that of the rear net 221, and is arranged at the edge of the ball receiving plate 230. The net 240 arranged in this way can intercept the tennis ball 30 rebounding from the ball receiving plate 230, therefore, the height of the net 240 does not need to be particularly high, and can not affect the incoming ball into the ball receiving chamber. The arrangement of the net 240 at the ball receiving plate 230 is based on the principle of fully covering the edge of the ball receiving plate 230 in combination with the rear net 221.

[0067] As shown in Figure 1 In some embodiments, the main body 10 comprises a shell 12, a chassis mechanism 13 and a ball launching mechanism 14, the chassis mechanism 13 is installed at the bottom of the shell 12, the ball launching mechanism 14 is installed inside the shell 12, the ball rotating cylinder 11 is installed at the top of the shell 12, and the ball launching mechanism 14 is configured to receive the tennis ball 30 put out from the ball rotating cylinder 11 and launch the tennis ball 30. ​

[0068] It can be understood that the chassis mechanism 13 can be provided with a driving motor and a walking wheel to drive the whole robot to move; the ball launching mechanism 14 is arranged below the ball rotating cylinder 11, and the ball inlet of the ball launching mechanism is arranged corresponding to the ball outlet of the ball rotating cylinder 11 to receive the tennis ball 30 discharged by the ball rotating cylinder 11 and launch the tennis ball 30. Of course, the main body 10 further includes a sensor assembly, a central processing unit and a controller to realize the functions of the robot such as walking, ball recognition, ball receiving and launching, and the specific structure and implementation principle can be understood with reference to the related technology, and will not be described here.

[0069] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure, as long as the combination does not result in contradictions.

[0070] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be considered as a limitation on the patent scope of the present application. It should be noted that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A tennis practice robot characterized by, The tennis training robot comprises: a main body provided with a ball rolling barrel; a ball receiving mechanism arranged above the main body, the ball receiving mechanism comprising: a support frame fixed to the top of the main body; a net bag arranged on the support frame and / or the main body; a ball receiving plate arranged on the support frame, the ball receiving plate being configured with a through hole communicating with the ball rolling barrel, the outer edge of the ball receiving plate having a height difference with the through hole; the ball receiving plate is arranged obliquely from its outer edge to the through hole, and the ball receiving plate has a preset included angle with the horizontal plane; the net bag comprises a rear net, the rear net forming a ball receiving chamber with an opening, and the bottom of the rear net being arranged around at least part of the edge of the ball receiving plate.

2. The tennis practice robot according to claim 1, characterized by The ball receiving plate is arranged on the support frame, and a ball storage cavity is formed between the ball receiving plate and the ball rolling barrel, the ball storage cavity being in communication with a plurality of ball storage grooves of the ball rolling barrel.

3. The tennis practice robot according to claim 2, characterized in that, The height of the ball storage cavity in the vertical direction is greater than or equal to the diameter of the tennis ball.

4. The tennis practice robot according to any one of claims 1 to 3, characterized in that A cushion pad is arranged on the ball receiving plate to reduce the rebound height of the tennis ball falling from the net bag to the ball receiving plate.

5. The tennis practice robot according to any one of claims 1 to 3, wherein The through hole is circular, and the ratio of the inner diameter of the through hole to the diameter of the tennis ball is 1-2.

5.

6. The tennis practice robot according to any one of claims 1 to 3, wherein The rear net is provided with a plurality of skeletons, the end portions of the skeletons being fixed to the support frame by fasteners.

7. The tennis practice robot according to claim 6, characterized in that The net bag further comprises a front net, the front net being hung inside the ball receiving chamber, and the front net having a spacing with the rear net in the ball receiving direction.

8. The tennis practice robot according to claim 6, wherein The tennis training robot further comprises: a net stopping device, the net stopping device being arranged on part of the edge of the ball receiving plate outside the rear net, the height of the net stopping device being less than the height of the rear net.

9. The tennis practice robot according to any one of claims 1 to 3, wherein The main body comprises an outer shell, a chassis mechanism and a ball launching mechanism, the chassis mechanism being installed at the bottom of the outer shell, the ball launching mechanism being installed inside the outer shell, the ball rolling barrel being installed at the top of the outer shell, and the ball launching mechanism being configured to receive the tennis ball released from the ball rolling barrel and launch the tennis ball.

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