Tennis training device and guide plate thereof

Abstract

The utility model relates to a tennis training device and a guide plate thereof, the guide plate comprises a guide plate body and mounting rods extending out of the bottom side of the guide plate body, the two sides of the guide plate body in the width direction are respectively provided with one mounting rod, and the guide plate body comprises guide plate sheets made of elastic plastic sheets. The plate sheet mounting base is located on the bottom side of the guide plate sheet, the edge, corresponding to the mounting side, of the guide plate sheet is fixed to the plate sheet mounting base, and the mounting rod is fixedly connected to the plate sheet mounting base. The guide plate is safe, waterproof and durable.

Description

Technical Field

[0001] This utility model relates to sports equipment, specifically a tennis training device that assists in tennis hitting training. Background Technology

[0002] Mastering topspin is a crucial fundamental skill in tennis training. To improve learning and practice efficiency, tennis training devices are often used as auxiliary equipment. One type of tennis training device features a swing arm mounted on a support frame, which swings relative to the frame. At the upper end of the swing arm is a horizontally positioned tennis ball rotation axis. A special tennis ball with a hole in the center rotates on this axis. A guide plate is usually also installed on the frame to guide the racket's swing path. Most tennis training devices on the market use textiles with tension bars, the tension bars being elastically bent into a U-shape, for their guide plates. Textile guide plates are not waterproof, not stain-resistant, and easily worn, obstructing vision; resin tension bars are easily broken, and when broken, the fiberglass inside can cause pollution and even injury. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a guide plate for a safe, waterproof and durable tennis training device.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A guide plate for a tennis training device includes a guide plate body and mounting rods extending from the bottom side of the guide plate body. The guide plate body has a mounting rod on each side in the width direction. The guide plate body comprises a guide plate sheet made of an elastic plastic sheet and a plate mounting seat located on the bottom side of the guide plate sheet. The edge of the guide plate sheet corresponding to the mounting side is fixed to the plate mounting seat, and the mounting rods are fixedly connected to the plate mounting seat.

[0006] Preferably, the plate mounting base has a positioning slot, and the guide plate is fixed to the plate mounting base after being inserted into the positioning slot.

[0007] Preferably, the plate mounting base is U-shaped, including a transverse side base and two longitudinal side bases located at the two ends of the transverse side base respectively, and a longitudinal insertion hole is provided on the longitudinal side base, into which the mounting rod is inserted.

[0008] Preferably, the guide plate is transparent.

[0009] Preferably, the guide plate is densely covered with a number of ventilation holes.

[0010] By adopting the above technical solution, using a thin, elastic plastic sheet eliminates the need for a support elastic tension rod. Furthermore, the guide plate is transparent, offering aesthetic appeal, weather resistance, durability, unobstructed visibility, and enhanced safety. The transparent plastic guide plate can be perforated with various holes as needed; different hole arrangements can achieve both aesthetic appeal and reduced wind pressure. The shape design of the plate mounting base not only provides a more secure and reliable fixation to the guide plate but also makes the installation of the mounting rod more convenient and secure.

[0011] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the guide plate of this utility model;

[0013] Figure 2 This is an exploded view of the guide plate of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the tennis training device of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the guide plate mounting bracket of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the mounting arm of this utility model;

[0017] Figure 6 for Figure 5 A sectional view taken along line AA.

[0018] Figure 7 This is a schematic diagram of the swing reset mechanism of this utility model. Detailed Implementation

[0019] See appendix Figures 1 and 2 This utility model discloses a guide plate 31 for a tennis training device, including a guide plate body 311 and mounting rods 312 extending from the bottom side of the guide plate body 311. One mounting rod 312 is provided on each side of the guide plate body 311 in the width direction. The guide plate body 311 includes a guide plate sheet 3111 made of an elastic plastic sheet and a plate mounting seat 3112 located on the bottom side of the guide plate sheet 3111. The edge of the guide plate sheet 3111 corresponding to the mounting side is fixed to the plate mounting seat 3112, and the mounting rods 312 are fixedly connected to the plate mounting seat 3112. The elastic plastic sheet is transparent to avoid obstructing the view and ensure unobstructed vision. The specific material of the elastic plastic sheet can be selected by those skilled in the art as needed, such as PC, PETG, PVC, etc. A plurality of ventilation holes 31111 are densely distributed on the guide plate sheet. The arrangement of these holes can achieve both aesthetic appeal and reduced wind pressure.

[0020] Furthermore, the plate mounting base 3112 has a positioning slot 31120, and the guide plate 3111 is fixed to the plate mounting base 3112 after being inserted into the positioning slot 31120. This achieves a firm and reliable fixation of the guide plate. The fixing method of the guide plate is selected according to the material, such as ultrasonic welding, resin adhesive, or fasteners.

[0021] Furthermore, the plate mounting base 3112 is U-shaped, including a transverse side base 31121 and two longitudinal side bases 31122 located at the two ends of the transverse side base. The longitudinal side bases 31122 are provided with longitudinal insertion holes, into which the mounting rod 312 is inserted. This not only ensures reliable fixing of the guide plate, making the guide plate more robust and reliable, but also facilitates the installation of the mounting rod via the longitudinal side bases of the plate mounting base. The mounting rod can be made of metal.

[0022] This utility model also discloses an application scheme of the above-mentioned guide plate. Of course, the above-mentioned guide plate can also be installed on other tennis training equipment that requires the use of guide plates.

[0023] like Figures 1-7As shown, the tennis training device of this utility model, which utilizes the aforementioned guide plate, includes a support frame 1. The support frame 1 is in the form of a tripod and includes a tubular main support rod 111 and two diagonal braces 112. The diagonal braces 112 are hinged to the main support rod 111, making it simpler, more convenient, stronger, more reliable, and more durable. An adjustable tube 12 is inserted into the top of the main support rod 111, and a top bracket 13 is provided at the top of the adjusting tube 12. A swinging reset mechanism is installed on the top bracket 13 of the support frame 1. 2 and guide plate assembly 3, the swing reset mechanism 2 includes a rotating swing arm 21 and an elastic reset member, which can be a torsion spring, tension spring, compression spring or rubber band, etc. The bottom of the rotating swing arm 21 has a swing mounting seat 211, and the rotating swing arm 21 is rotatably mounted on the top bracket 13 of the support frame 1 via the swing mounting seat 211. The rotating swing arm 21 has an initial position, and the elastic reset member provides a reset force to reset the rotating swing arm 21 to the initial position. The swing end of the rotating swing arm 21 has a horizontal ball shaft 212. A rotating simulated tennis ball 4 is mounted on a horizontal ball axis 212. When the simulated tennis ball 4 is hit, the rotating swing arm 21 is subjected to impact force and rotates. The elastic reset member provides resistance and simultaneously drives the rotating swing arm to return to its initial position. The guide plate assembly 3 includes a pair of guide plates 31 arranged vertically and a guide plate mounting bracket 32 ​​for mounting the guide plates 31. The guide plate 31 includes a guide plate body 311, which has a mounting side with a mounting rod 312 extending from it. The width of the guide plate body 311 is... A mounting rod 312 is provided on both sides. The structure of the guide plate is as described in the above embodiment, so it will not be repeated here. The guide plate mounting frame 32 includes two mounting arms 321 arranged left and right at the top, and a support rod 322 fixed on the support frame 1. The mounting arms 321 are mounted on the support rod 322. The two mounting rods 312 of the two guide plates 31 are correspondingly mounted on the upper and lower ends of the mounting arms 321, thereby forming a clearance window 6 between the two guide plates 31 to avoid the swing end of the rotating swing arm 21. To better understand the hitting effect, the support frame 1 is provided with an angle sensor 53 for detecting the swing amplitude of the rotating swing arm 21. The rotating swing arm 21 has a tubular cavity 2111, and the angle sensor 53 is placed in the tubular cavity 2111. The rotating shaft of the angle sensor is fixed on the support frame. The base of the angle sensor and the rotating swing arm rotate synchronously. When the rotating swing arm rotates, it drives the angle sensor to generate an angle signal. Angle sensor 53 is typically configured with controller 52 to process the signal, such as sending it and outputting a score based on corresponding comparison rules. Alternatively, a speed sensor can be configured to detect the spin speed of the simulated tennis ball; the speed sensor is connected to controller 52.

[0024] The existing design with a fixed position for the guide plate 31 limits the range of hitting motions during teaching and practice, restricting the ability to simulate different match scenarios. Therefore, the following structural design is adopted: The mounting arm 321 includes an upper arm 3211, a lower arm 3212, and a lockable pivoting mechanism. Two mounting rods 312 of the upper guide plate 31 are mounted on the upper arm 3211, and two mounting rods 312 of the lower guide plate 31 are mounted on the lower arm 3212. The lower arm 3212 is fixedly mounted on a support rod 322. The upper arm 3211 is connected to the lower arm 3212 via the lockable pivoting mechanism, allowing the upper arm 3211 to rotate relative to the lower arm 3212 for position adjustment. The connector uses a design with a rotatable lower and upper insert arm, enabling angle adjustment of the upper guide plate. The upper guide plate is securely and reliably installed, and the adjustment operation is simple and convenient.

[0025] The lockable pivoting mechanism includes a hinge seat 3213 fixed to the end of the lower arm 3212, a hinge portion 3214 fixed to the end of the upper arm 3211, a locking shaft 3215, and a locking nut 3216. The hinge seat 3213 includes a base 32131, and two opposing seat plates 32132 are provided on the left and right sides of the base 32131, forming a positioning gap between the seat plates 32132. The seat plates 32132 are provided with through holes. The hinge portion 3214... Inserted within the positioning interval, the hinge 3214 can rotate within the positioning interval to complete position changes. The hinge portion 3214 has a shaft hole corresponding to the position of the through hole. The locking shaft 3215 passes through the through hole of the base plate and the shaft hole of the hinge portion. One end of the locking shaft has a pressing end, and the other end of the locking shaft 3215 is threadedly connected to a locking nut 3216. The pressing end and the locking nut work together on the two base plates 32132 to clamp and lock the hinge portion 3214 within the positioning interval and to release and unlock it. The operating handwheel can be set on the pressing end of the locking shaft; alternatively, the operating handwheel can be set on the locking nut.

[0026] To facilitate use, a limiting structure is provided between the hinge portion 3214 and the hinge seat 3213 to limit the rotation angle range of the hinge portion relative to the hinge seat. The limiting structure includes an angle limiting protrusion 32133 formed on the base 32131 and a limiting slot 32141 provided on the hinge portion 3214. The limiting slot 32141 extends along the rotation direction of the hinge portion 3214 and has two limiting end faces. The angle limiting protrusion 32133 protrudes into the limiting slot 32141. The angle limiting protrusion 32133 stops the hinge portion 3214 relative to the hinge seat 3213 by the two limiting end faces, thereby limiting the position of the limit rotation angle of the hinge portion 3214 relative to the hinge seat 3213.

Claims

1. A guide plate for a tennis training device, comprising a guide plate body and mounting rods extending from the bottom side of the guide plate body, wherein a mounting rod is provided on each side of the guide plate body in the width direction, characterized in that: The guide plate body includes a guide plate sheet made of elastic plastic sheet and a plate mounting seat located on the bottom side of the guide plate sheet. The edge of the guide plate sheet corresponding to the mounting side is fixed on the plate mounting seat, and the mounting rod is fixedly connected to the plate mounting seat.

2. The guide plate of the tennis trainer according to claim 1, characterized in that: The plate mounting base has a positioning slot, and the guide plate is inserted into the positioning slot and then fixed to the plate mounting base.

3. The guide plate of the tennis trainer according to claim 1 or 2, characterized in that: The plate mounting base is U-shaped and includes a transverse side base and two longitudinal side bases located at the two ends of the transverse side base. The longitudinal side bases are provided with longitudinal insertion holes, and the mounting rod is inserted into the longitudinal insertion holes.

4. The guide plate of the tennis trainer according to claim 1, characterized in that: The guide plate is transparent.

5. The guide plate of the tennis training device according to claim 1, characterized in that: The guide plate is densely covered with several ventilation holes.

6. A tennis training device, comprising a support frame, a swing reset mechanism and a guide plate assembly mounted on the top of the support frame, the swing reset mechanism comprising a rotating swing arm and an elastic reset member, the bottom of the rotating swing arm having a swing mounting seat, the rotating swing arm being rotatably mounted on the support frame via the swing mounting seat, the rotating swing arm having an initial position, the elastic reset member providing a reset force to reset the rotating swing arm to the initial position, the swing end of the rotating swing arm having a horizontal ball shaft, a self-rotating simulated tennis ball being mounted on the horizontal ball shaft, the guide plate assembly comprising a pair of guide plates arranged vertically and a guide plate mounting frame for mounting the guide plates, the guide plate comprising a guide plate body and a mounting rod extending from the bottom side of the guide plate body, a mounting rod provided on each side of the guide plate body in the width direction, the guide plate mounting frame comprising two mounting arms arranged horizontally at the top, and a support rod fixed to the support frame, the mounting arms being mounted on the support rod, the two mounting rods of the two guide plates being correspondingly mounted on the upper and lower ends of the mounting arms, thereby forming a swing space between the two guide plates to avoid the swing end of the rotating swing arm, characterized in that: The guide plate is the guide plate as defined in any one of claims 1 to 5.

7. The tennis training device according to claim 6, characterized in that: The mounting arm includes an upper arm, a lower arm, and a lockable pivoting mechanism. Two mounting rods on the upper guide plate are mounted on the upper arm of the mounting arm, and two mounting rods on the lower guide plate are mounted on the lower arm of the mounting arm. The lower arm is fixedly mounted on a support rod, and the upper arm is configured to be connected to the lower arm via the lockable pivoting mechanism, so that the upper arm can rotate and adjust its position relative to the lower arm.

8. The tennis training device according to claim 7, characterized in that: The lockable pivoting mechanism includes a hinge seat fixed to the lower arm end, a hinge part fixed to the upper arm end, a locking shaft, and a locking nut. The hinge seat includes a base, with two oppositely arranged seat plates on the left and right sides of the base, forming a positioning gap between the seat plates. The seat plates have through holes. The hinge part is inserted into the positioning gap and can rotate within the positioning gap to complete position changes. The hinge part has a shaft hole corresponding to the position of the through hole. The locking shaft passes through the through hole of the seat plate and the shaft hole of the hinge part. One end of the locking shaft has a pressing end, and the other end of the locking shaft is threaded with a locking nut. The pressing end and the locking nut work together on the two seat plates to clamp and lock the hinge part within the positioning gap and unlock it.

9. The tennis training device according to claim 8, characterized in that: A limiting structure is provided between the hinge part and the hinge seat to limit the rotation angle range of the hinge part relative to the hinge seat. The limiting structure includes an angle limiting protrusion formed on the base and a limiting groove provided on the hinge part. The limiting groove extends along the rotation direction of the hinge part and has two limiting end faces. The angle limiting protrusion is inserted into the limiting groove. The angle limiting protrusion is stopped by the two limiting end faces to limit the position of the limit rotation angle of the hinge part relative to the hinge seat.

10. The tennis training device according to claim 6, characterized in that: The support frame is equipped with an angle sensor to detect the swing amplitude of the rotating arm.

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