Ball serving disc angle control structure

Abstract

The utility model discloses a ball serving disc angle control structure which comprises a lower bottom plate, a vertically-arranged upper vertical plate is fixedly installed on the upper surface of the lower bottom plate, a bearing is installed at one end of the upper vertical plate, a ball serving disc is installed in the bearing through a rotating shaft, and a magnet is fixedly installed at the other end of the rotating shaft of the bearing. The outer wall of the outer ring of the bearing is fixedly provided with a rear frame plate through a connecting rod, the outer wall of the side, close to the magnet, of the rear frame plate is fixedly provided with a magnetic sensor, and the magnetic sensor and the magnet are horizontally and oppositely arranged. The integral control performance and practicability of the tennis pitching machine are improved, pitching angle detection sensing only needs a magnet and a magnetic sensor, and the tennis pitching machine has the actual use characteristics of being simple in structure, convenient to assemble and low in manufacturing and maintenance cost and is suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to tennis ball serving disc technical field, concretely is a kind of serving disc angle control structure. BACKGROUND

[0002] Tennis ball serving machine is a kind of equipment specially designed for simulating tennis ball serving, it can automatically serve, and can adjust speed, rotation, interval etc.

[0003] The basic structure of tennis ball serving machine includes a ball loading frame, a motor at the bottom and a pair of counter-rotating wheels (or a mechanical arm and a launching device). After starting the machine, the two wheels at the bottom rotate at high speed in opposite directions, the caterpillar belt surface is rough, providing friction. The ball in the ball loading frame passes through the channel from the hole by the rotating disc, obtains initial speed, and is squeezed and pushed out into the space between the two caterpillar belts by the friction of the caterpillar belt.

[0004] And the structure loaded with two serving wheels is serving disc, which can swing left and right under the driving of connecting rod driving structure, so that tennis balls of different angles can be served, and the training effect is improved. However, the angle of the traditional serving disc is not convenient to detect and control during use, which reduces the overall use effect. Therefore, the utility model provides a serving disc angle control structure. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of serving disc angle control structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of serving disc angle control structure, including lower bottom plate, the upper surface of the lower bottom plate is fixedly installed with the vertically arranged upper stand, one end of the upper stand is installed with bearing, the inside of the bearing is installed with serving disc by pivot, the other end of bearing pivot is fixedly installed with magnet, the outer wall of the outer ring of the bearing is fixedly installed with rear rack plate by connecting rod, the outer wall of the side close to magnet of the rear rack plate is fixedly installed with magnetic sensor, the magnetic sensor and magnet are horizontally opposite.

[0007] Preferably, the outer wall of the side away from the serving disc of the upper stand is fixedly installed with gear reduction box, and the input end of the gear reduction box is fixedly installed with driving motor.

[0008] Preferably, the output shaft of the driving motor is fixedly connected with the input end of the gear reduction box.

[0009] Preferably, the output port of the gear reduction box is fixedly installed with rotating rod by shaft body, and the top of the rotating rod is rotatably installed with connecting plate.

[0010] Preferably, the connecting plate is rotatably connected to the ball-throwing disc at an end away from the rotating rod.

[0011] Compared with the prior art, the ball-throwing machine has the advantages that:

[0012] The magnetic sensor can sense the magnetic field change of the magnet, and the current rotating angle of the bearing rotating shaft can be known, the rotating of the inner rotating shaft of the bearing can be sensed and detected, the ball-throwing angle of the ball-throwing disc can be further known, the control chip of the tennis ball-throwing machine can be connected to the magnetic sensor, the ball-throwing angle of the ball-throwing disc can be magnetically sensed and controlled, the ball-throwing angle dynamic detection and control practical use effect is achieved, the overall control performance and practicality of the tennis ball-throwing machine are improved, the magnet and the magnetic sensor are used for the ball-throwing angle detection and sensing, the practical use characteristics of simple structure, convenient assembly, low manufacturing and maintenance cost are achieved, and the tennis ball-throwing machine is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front perspective structural schematic view of the ball-throwing disc assembly of the utility model embodiment.

[0014] Figure 2 It is a back perspective structural schematic view of the ball-throwing disc assembly of the utility model embodiment.

[0015] Figure 3 It is a top view structural schematic view of the ball-throwing disc assembly of the utility model embodiment.

[0016] Figure 4 It is an A area enlarged structural schematic view of the utility model embodiment. Figure 3

[0017] In the figure: 1, lower bottom plate; 2, upper vertical plate; 3, bearing; 4, ball-throwing disc; 5, magnet; 6, rear frame plate; 7, magnetic sensor; 8, gear reduction box; 9, driving motor; 10, rotating rod; 11, connecting plate. DETAILED DESCRIPTION

[0018] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] ​In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external" "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the position relation or position relation is based on the position relation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the term "installation", "provided with", "connection" and so on, should be understood broadly, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0021] Please refer to Figures 1-4 The utility model provides an embodiment: a ball throwing disc angle control structure, including lower bottom plate 1, the upper surface fixed mounting of lower bottom plate 1 is vertically arranged upper stand plate 2, one end of upper stand plate 2 is installed bearing 3, and the inside of bearing 3 is installed ball throwing disc 4 through the shaft,

[0022] Wherein, referring to the drawings of the specification Figure 3 And Figure 4 It is shown that the other end of the shaft of bearing 3 is fixedly installed magnet 5, the outer wall of the outer ring of bearing 3 is fixedly installed rear rack plate 6 through connecting rod, the outer wall of the side close to magnet 5 of rear rack plate 6 is fixedly installed magnetic sensor 7, and magnetic sensor 7 is horizontally opposite to magnet 5.

[0023] This kind of structure design, when ball throwing disc 4 reciprocates left and right under the action of motor connecting rod driving structure, the bearing shaft of the tail end of ball throwing disc 4 can synchronously reciprocate left and right, when the shaft in bearing reciprocates, the magnet 5 at the other end will be driven to rotate reciprocally, so that the magnetic sensor 7 opposite to magnet 5 can sense the magnetic field change when magnet 5 rotates.

[0024] In actual use, the magnetic sensor 7 can sense the magnetic field change of the magnet 5 to know the rotating angle of the bearing shaft, and the rotating angle of the inner rotating shaft of the bearing can be further sensed to know the ball-throwing angle of the ball-throwing disc 4, so that the magnetic sensor 7 can be connected to the control chip of the tennis ball throwing machine to magnetically control the ball-throwing angle of the ball-throwing disc 4, and the ball-throwing angle can be dynamically detected and controlled, and the overall control performance and practicability of the tennis ball throwing machine are improved.

[0025] In the embodiment, in order to drive the left-right reciprocating swing of the ball-throwing disc, a gear reduction box 8 is fixedly installed on the outer wall of the upper stand plate 2 away from the ball-throwing disc 4, a driving motor 9 is fixedly installed on the input end of the gear reduction box 8, and the output shaft of the driving motor 9 is fixedly connected with the input end of the gear reduction box 8, so that the gear reduction box 8 can be driven to operate at a reduced speed by the driving motor 9, and the gear reduction box 8 is a mature product of the prior art, that is, a transmission mode of driving a large gear by a small gear is adopted to operate at a reduced speed, and the composition structure and working principle thereof will not be described in detail herein.

[0026] Further, the output end of the gear reduction box 8 is fixedly installed with a rotating rod 10 through a shaft body, the top end of the rotating rod 10 is rotatably installed with a connecting plate 11, and the end of the connecting plate 11 away from the rotating rod 10 is rotatably connected with the ball-throwing disc 4.

[0027] According to the above structure, when the driving motor 9 works, the driving motor 9 can drive the rotating rod 10 to rotate through the gear reduction box 8, and when the rotating rod 10 rotates, the connecting rod 11 rotatably connected with the top end of the rotating rod 10 can drive the ball-throwing disc 4 to swing left and right reciprocatingly, so that the ball-throwing disc 4 is driven to swing reciprocatingly by the motor connecting rod, and the actual use effect is achieved.

[0028] Working principle: in use, the driving motor 9 can work, when the driving motor 9 works, the driving motor 9 can drive the rotating rod 10 to rotate through the gear reduction box 8, and when the rotating rod 10 rotates, the connecting rod 11 rotatably connected with the top end of the rotating rod 10 can drive the ball-throwing disc 4 to swing left and right reciprocatingly, so that the ball-throwing disc 4 is driven to swing reciprocatingly by the motor connecting rod, and the actual use effect is achieved.

[0029] When the ball-throwing disc 4 swings left and right reciprocatingly under the action of the motor connecting rod driving structure, the rotating shaft in the tail end bearing of the ball-throwing disc 4 can synchronously swing left and right reciprocatingly, when the rotating shaft in the bearing swings reciprocatingly, the magnet 5 at the other end will swing reciprocatingly, when the magnet 5 swings, the magnetic field will change, and the magnetic sensor 7 directly opposite the magnet 5 can sense the magnetic field change of the magnet 5 when it swings.

[0030] In actual use, the current rotating angle of the bearing rotating shaft can be known by sensing the magnetic field change of the magnet 5 through the magnetic sensor 7, the rotating angle of the rotating shaft in the bearing can be further sensed, the ball-throwing angle of the ball-throwing disc 4 can be known, and the ball-throwing angle of the ball-throwing disc 4 can be magnetically sensed and controlled by connecting the magnetic sensor 7 with the control chip of the tennis ball-throwing machine, so that the ball-throwing angle of the ball-throwing disc 4 can be dynamically detected and controlled, the overall control performance and practicality of the tennis ball-throwing machine are improved.

[0031] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments but can be implemented in other embodiments without departing from the spirit or essential characteristics of the application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims.

Claims

1. A ball-throwing disc angle control structure comprising a lower base plate (1), characterized in that, The lower bottom plate (1) upper surface is fixedly installed with vertically arranged upper vertical plate (2), one end of the upper vertical plate (2) is installed with bearing (3), the inside of the bearing (3) is installed with ball-throwing disc (4) through rotating shaft, the other end of the rotating shaft of the bearing (3) is fixedly installed with magnet (5), the outer wall of the outer ring of the bearing (3) is fixedly installed with rear frame plate (6) through connecting rod, the outer wall of the side close to the magnet (5) of the rear frame plate (6) is fixedly installed with magnetic sensor (7), the magnetic sensor (7) is horizontally arranged opposite to the magnet (5).

2. A ball release plate angle control structure according to claim 1, wherein: The outer wall of the side away from the ball-throwing disc (4) of the upper vertical plate (2) is fixedly installed with gear reduction box (8), the input end of the gear reduction box (8) is fixedly installed with driving motor (9).

3. A ball release plate angle control structure according to claim 2, wherein: The output shaft of the driving motor (9) is fixedly connected with the input end of the gear reduction box (8).

4. The ball launch angle control structure of claim 2, wherein: The output port of the gear reduction box (8) is fixedly installed with rotating rod (10) through shaft body, the top end of the rotating rod (10) is rotatably installed with connecting plate (11).

5. A ball release plate angle control structure according to claim 4, wherein: The end away from the rotating rod (10) of the connecting plate (11) is rotatably connected with the ball-throwing disc (4).

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