Adjustable tennis pressure detection device

Abstract

The invention discloses an adjustable tennis pressure detection device, and belongs to the field of tennis testing devices.The adjustable tennis pressure detection device comprises a base, a first connecting rod, a top seat and a detection component, the first connecting rod is vertically fixed to one side of the base, the top seat is fixed to the top of the first connecting rod, and the detection component comprises a mounting seat, a pressing block and a pressure sensor; the mounting base is slidably connected to one side of the first connecting rod, and the pressing block is connected to the bottom of the mounting base through a pressure sensor. When the mounting base drives the pressing block to press downwards to detect the pressure of the tennis ball, the pressure on the tennis ball is adjusted through the pressing distance, and the pressure on the tennis ball is detected through the pressure sensor. In the downward pressing process of the mounting base, the mounting base can synchronously drive a protective cover in the protective component to press downwards and drive a protective net barrel to ascend, and the tennis ball containing area is blocked. The protective net barrel can prevent fragments from splashing when the tennis ball is accidentally broken, and the protective cover can enable a tester to observe the pressed deformation condition of the tennis ball under sufficient protection.

Description

Technical Field

[0001] The present invention relates to the field of tennis ball testing devices, and more particularly to an adjustable tennis ball pressure detection device. Background Art

[0002] Professional tennis matches have strict requirements for tennis balls. They must be round and resilient. When 18 pounds of pressure is applied to the ball, the inward elastic deformation should be between 0.22 inches and 0.29 inches, and the post-compression rebound deformation should be between 0.315 inches and 0.425 inches. These two deformation values should be the average of the values measured along the ball's three axes. In any case, the difference between any two values must not exceed 0.03 inches.

[0003] In high-level competitions, tennis players strike with great force, subjecting the tennis ball to even greater forces. In addition to meeting the aforementioned deformation requirements, the ball must also maintain structural integrity under sustained, high-intensity pressure to prevent breakage. Therefore, before leaving the factory, tennis balls must be tested for their pressure-bearing capacity. Existing tennis ball pressure testing equipment only performs direct pressure tests and lacks protective mechanisms. If the ball breaks or explodes during testing, flying debris could injure testers or equipment. Summary of the Invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose an adjustable tennis ball pressure detection device, which can protect the tennis ball during pressure testing to prevent secondary damage caused by fragments flying from the broken tennis ball.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides an adjustable tennis ball pressure detection device, which includes a base, a first connecting rod, a top seat and a detection component. The first connecting rod is vertically fixed to one side of the base, and the top seat is fixed to the top of the first connecting rod. The detection component includes a mounting seat, a pressure block and a pressure sensor. The mounting seat is slidably connected to one side of the first connecting rod, and the pressure block is connected to the bottom of the mounting seat through the pressure sensor.

[0007] In a preferred technical solution of the present invention, the detection component also includes a first screw, a drive motor and a first slide rod; the first slide rod is fixed to the top of the top seat, the drive motor is slidably connected to the first slide rod, the first screw rod passes through the top seat and is rotatably connected to the top of the mounting seat, and the first screw rod is threadedly connected to the top seat.

[0008] In a preferred technical solution of the present invention, a protective component is also included, which includes a protective cover, a first spring, a slider and a first retaining ring; the base is circular, the protective cover is circular, and the radius of the protective cover is larger than the radius of the base, and multiple sliders are fixed on the side of the mounting seat, the protective cover is sleeved on the outside of the mounting seat and the sliders are slidably connected to the inner side of the protective cover, the first retaining ring is fixed to the inner wall of the protective cover, and the first retaining ring is located above the mounting seat, one end of the first spring is fixed to the bottom of the first retaining ring, and the other end of the first spring is against the mounting seat.

[0009] In a preferred technical solution of the present invention, a second retaining ring is installed on the side wall of the base, and the protective cover is located above the second retaining ring.

[0010] In a preferred technical solution of the present invention, the protective component also includes a protective mesh tube and a driving member. A downwardly recessed ball seat is provided on the base. The protective mesh tube and the driving member are both arranged in the base. An annular groove is provided on the mounting seat around the ball seat. The driving member extends to the outside of the base, and the driving member drives the protective mesh tube to pass through the annular groove and extend to the base.

[0011] In a preferred technical solution of the present invention, the driving member includes a first driving rod, a second driving rod, a transmission belt and a second spring. The transmission belt is rotatably connected to the installation through a roller. The first driving rod and the second driving rod are both fixed on the transmission belt. The side wall of the base is provided with a slot. The first driving rod extends to the outside of the base through the slot, and the second driving rod rests on the bottom of the protective net tube; the second spring is connected to the bottom of the base, and the upper end of the second spring is lower than the bottom of the first driving rod.

[0012] In a better technical solution of the present invention, a pre-fixing part is also included, which includes a slide, a clamping rod and a third spring. The slide is slidably connected to the base, and the two clamping rods are vertically slidably connected to the slide. The third spring is arranged in the slide, and the two ends of the third spring are respectively connected to the two clamping rods. A clamping groove is opened on the base, and the two clamping grooves are respectively located on both sides of the ball seat. The clamping rod extends to the base through the clamping groove.

[0013] In a preferred technical solution of the present invention, the pre-fixed part includes a fourth spring and a second slide rod, the two second slide rods are vertically arranged in the base, the slide seat is slidably connected between the two second slide rods, one end of the fourth spring is fixed to the inner bottom wall of the base, and the other end of the fourth spring is against the top of the slide seat, and a card block is provided on the second slide rod, and the card block is arranged in a right-angled triangle, the inclined surface of the card block faces downward, and the bottom of the slide seat is against the card block.

[0014] In a preferred technical solution of the present invention, in a preferred technical solution of the present invention, the pre-fixed part also includes a trigger rod, the trigger rod includes a protective tube and a second screw, the second screw is inserted into the protective tube and the second screw is threadedly connected to the protective tube, the protective tube passes through the top of the base and extends to the inside of the base, a second connecting rod is connected to one side of the sliding seat, the bottom of the protective tube is against the second connecting rod, and a pressure rod is installed at the bottom of the mounting seat, and the pressure rod is located above the second screw.

[0015] In a preferred technical solution of the present invention, buffer blocks for enhancing the clamping force are provided on the facing surfaces of the two pressure rods.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides an adjustable tennis ball pressure detection device. When a mounting base with a pressure block is pressed down to test the pressure of a tennis ball, the pressure applied to the tennis ball is adjusted by the distance of the downward pressure, and the pressure applied to the tennis ball is detected by a pressure sensor. During the downward pressure of the mounting base, the mounting base also simultaneously drives the protective cover in the protective component downward and the protective net upward, shielding the area where the tennis ball is placed. The protective net prevents fragments from flying if the tennis ball accidentally breaks, while the protective cover allows the tester to observe the deformation of the tennis ball under pressure with sufficient protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic structural diagram of an adjustable tennis ball pressure detection device provided in a specific embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure when the middle mounting seat is lowered to the tennis ball;

[0020] Figure 3 yes Figure 1 Schematic diagram of the top view of the middle base.

[0021] In the picture:

[0022] 1. Base, 11. Second retaining ring, 12. Slot, 13. Annular groove, 14. Clamping groove, 2. First connecting rod, 3. Top seat, 5. Mounting seat, 51. Pressure sensor, 52. Pressure block, 53. First slide bar, 54. Drive motor, 55. First screw, 61. Protective cover, 62. First retaining ring, 63. First spring, 64. Slider, 71. Ball seat, 72. Pressure rod, 73. First connecting rod, 74. Casing, 75. Second screw, 81. Protective mesh tube, 82. First drive rod, 83. Transmission belt, 84. Second drive rod, 91. Slide seat, 92. Clamping rod, 93. Buffer block, 94. Third spring, 95. Opening, 96. Fourth spring, 97. Second slide bar, 98. Block. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0024] like Figure 1-3 As shown, an adjustable tennis ball pressure detection device is provided in the embodiment, including a base 1, a first connecting rod 2, a top seat 3 and a detection component. The first connecting rod 2 is vertically fixed to one side of the base 1, and the top seat 3 is fixed to the top of the first connecting rod 2. The detection component includes a mounting seat 5, a pressure block 52 and a pressure sensor 51. The mounting seat 5 is slidably connected to one side of the first connecting rod 2, and the pressure block 52 is connected to the bottom of the mounting seat 5 through the pressure sensor 51.

[0025] During pressure testing, a tennis ball is placed on base 1. Mounting block 5, along with pressure sensor 51, descends along first connecting rod 2 until pressure block 52 presses against the ball. As mounting block 5 descends, the pressure exerted by pressure block 52 on the ball increases. Pressure sensor 51 then measures the pressure applied to the ball, allowing the tester to easily test the ball's pressure.

[0026] Furthermore, the detection component also includes a first screw 55, a drive motor 54 and a first slide rod 53; the first slide rod 53 is fixed to the top of the top seat 3, the drive motor 54 is slidingly connected to the first slide rod 53, the first screw 55 passes through the top seat 3 and is rotatably connected to the top of the mounting seat 5, and the first screw 55 is threadedly connected to the top seat 3.

[0027] The drive motor 54 rotates the first screw 55. As the first screw 55 rotates, due to its threaded connection with the top base 3, it raises or lowers the mounting base 5, thereby achieving pressure testing on the tennis ball. Adjusting the rotation of the drive motor 54 adjusts the pressure on the tennis ball.

[0028] Furthermore, it also includes a protective component, which includes a protective cover 61, a first spring 63, a slider 64 and a first retaining ring 62; the base 1 is circular, the protective cover 61 is circular, and the radius of the protective cover 61 is greater than the radius of the base 1, and multiple sliders 64 are fixed to the side of the mounting seat 5. The protective cover 61 is sleeved on the outside of the mounting seat 5 and the slider 64 is slidably connected to the inner side of the protective cover 61. The first retaining ring 62 is fixed to the inner wall of the protective cover 61, and the first retaining ring 62 is located above the mounting seat 5. One end of the first spring 63 is fixed to the bottom of the first retaining ring 62, and the other end of the first spring 63 is against the mounting seat 5.

[0029] As the mounting base 5 descends to press against the tennis ball, the protective cover 61 is also lowered. Connected to the mounting base 5 via a slider 64, the protective cover 61 is positioned lower than the mounting base 5. Therefore, during the descent, the protective cover 61 first presses against the base 1. As the mounting base 5 continues to descend, the protective cover 61 stops descending, causing sliding between the protective cover 61 and the mounting base 5, compressing the first spring 63. The protective cover 61 always seals the test area while the mounting base 5 lowers the tennis ball for pressure testing. Made of high-strength glass or acrylic, the protective cover 61 allows the tester to visually observe the tennis ball's deformation under load. Furthermore, if the tennis ball is subjected to excessive force or is of substandard quality, cracking or exploding, the protective cover 61 can contain the fragments, preventing damage to the tester or other equipment. When the test is complete, the mounting base 5 ascends, and the protective cover 61 also ascends simultaneously. The tester can also lift the protective cover 61 upwards to better manipulate the tennis ball while collecting or releasing it.

[0030] Furthermore, a second collar 11 is installed on the side wall of the base 1, and the protective cover 61 is located above the second collar 11. The second collar 11 can provide support for the protective cover 61 when the protective cover 61 is lowered.

[0031] Furthermore, the protective component also includes a protective net tube 81 and a driving member. A downwardly recessed ball seat 71 is provided on the base 1. The protective net tube 81 and the driving member are both arranged inside the base 1. An annular groove 13 is provided around the ball seat 71 on the mounting seat 5. The driving member extends to the outside of the base 1. The driving member drives the protective net tube 81 through the annular groove 13 and extends to the base 1.

[0032] During the process of the protective cover 61 descending, the protective cover 61 will also drive the protective net tube 81 to rise through the driving member. The protective net tube 81 rises from the annular groove 13 and surrounds the test tennis ball at a close distance, further ensuring that the fragments will not damage the test personnel and other equipment when the tennis ball breaks.

[0033] Furthermore, the driving member includes a first driving rod 82, a second driving rod 84, a transmission belt 83 and a second spring. The transmission belt 83 is connected to the installation through a roller rotation. The first driving rod 82 and the second driving rod 84 are both fixed on the transmission belt 83. A slot 12 is provided on the side wall of the base 1. The first driving rod 82 extends to the outside of the base 1 through the slot 12. The second driving rod 84 rests on the bottom of the protective net tube 81; the second spring is connected to the bottom of the base 1, and the upper end of the second spring is lower than the bottom of the first driving rod 82.

[0034] As the protective cover 61 descends, it presses against the first drive rod 82, which compresses the second spring and descends. Simultaneously, the first drive rod 82 rotates the transmission belt 83, which in turn raises the second drive rod 84. The rising second drive rod 84 then pushes against the protective net, passes through the annular groove 13, and ascends to the periphery of the ball seat 71, protecting the test ball. When the test is complete, the protective cover 61 ascends. The first drive rod 82, freed from the pressure of the protective cover 61, returns to its original position under the action of the second spring. The second drive rod 84 simultaneously descends and returns to its original position, retracting the protective net cylinder 81 from the annular groove 13.

[0035] Furthermore, it also includes a pre-fixing part, which includes a slide 91, a clamping rod 92 and a third spring 94. The slide 91 is slidably connected to the base 1, and an opening 95 is provided on the slider 64. The two clamping rods 92 are vertically slidably connected to the slide 91 through the opening 95. The third spring 94 is arranged in the slide 91, and the two ends of the third spring 94 are respectively connected to the two clamping rods 92. A clamping groove 14 is provided on the base 1, and the two clamping grooves 14 are respectively located on both sides of the ball seat 71. The clamping rod 92 extends to the base 1 through the clamping groove 14.

[0036] The pre-fixing mechanism secures the test ball, preventing it from shifting before and during the initial stages of the pressing block 52's contact, potentially affecting the test results. Before the test begins, the ball is placed on the tee 71, the slide 91 rises, and the two clamping rods 92 rise from the clamping slots 14 and open. Under the action of the third spring 94, the two clamping rods 92 clamp onto the left and right sides of the ball, securing it in place.

[0037] Furthermore, the pre-fixing part includes a fourth spring 96 and a second slide rod 97. The two second slide rods 97 are vertically arranged in the base 1. The slide 91 is slidably connected between the two second slide rods 97. One end of the fourth spring 96 is fixed to the inner bottom wall of the base 1, and the other end of the fourth spring 96 is against the top of the slide 91. A block 98 is provided on the second slide rod 97. The block 98 is arranged in a right-angled triangle. The inclined surface of the block 98 faces downward, and the bottom of the slide 91 is against the block 98.

[0038] When pre-fixing the tennis ball, the slide 91 slides up along the second slide bar 97 , the slide 91 slides over the clamping block 98 and is clamped on the clamping block 98 , the fourth spring 96 is compressed, and the clamping rod 92 extends from the clamping groove 14 to clamp the tennis ball.

[0039] Furthermore, the pre-fixed part also includes a trigger rod, which includes a protective tube 74 and a second screw 75. The second screw 75 is inserted into the protective tube 74 and the second screw 75 is threadedly connected to the protective tube 74. The protective tube 74 extends through the top of the base 1 to the inside of the base 1. A second connecting rod 73 is connected to one side of the slide 91. The bottom of the protective tube 74 is against the second connecting rod 73. A pressure rod 72 is installed at the bottom of the mounting seat 5, and the pressure rod 72 is located above the second screw 75.

[0040] After the test begins, the mounting seat 5 descends, and the pressure rod 72 also descends. When the pressure block 52 presses against the tennis ball, the pressure rod 72 also presses against the second screw 75. The second screw 75 and the casing 74, through the second connecting rod 73, carry the slide 91 downward. The slide 91 is forced downward to press the clamping block 98. At this time, under the action of the fourth spring 96, the slide 91 quickly slides down, and the two clamping rods 92 also enter the mounting seat 5 from both sides of the tennis ball. The two sides of the tennis ball are no longer clamped and can fully deform under the pressure of the pressure block 52, obtaining accurate test results. At the same time, the second screw 75 can be rotated according to the size of the test ball and the test requirements, so that the position of the top of the second screw 75 is raised or lowered, and the timing of the release of the clamping rod 92 is adjusted to obtain the best fixation and testing effect.

[0041] Furthermore, buffer blocks 93 for enhancing the clamping force are provided on the facing surfaces of the two pressure rods 72 .

[0042] Other technologies of this embodiment adopt existing technologies.

[0043] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An adjustable tennis ball pressure detection device, characterized by: The invention comprises a base (1), a first connecting rod (2), a top seat (3) and a detection component, wherein the first connecting rod (2) is vertically fixed to one side of the base (1), the top seat (3) is fixed to the top of the first connecting rod (2), and the detection component comprises a mounting seat (5), a pressure block (52) and a pressure sensor (51), the mounting seat (5) is slidably connected to one side of the first connecting rod (2), and the pressure block (52) is connected to the bottom of the mounting seat (5) through the pressure sensor (51).

2. The adjustable tennis ball pressure detection device according to claim 1, characterized in that: The detection component further includes a first screw (55), a drive motor (54) and a first slide rod (53); The first slide rod (53) is fixed to the top of the top seat (3), the driving motor (54) is slidably connected to the first slide rod (53), the first screw rod (55) passes through the top seat (3) and is rotatably connected to the top of the mounting seat (5), and the first screw rod (55) is threadedly connected to the top seat (3).

3. The adjustable tennis ball pressure detection device according to claim 2, characterized in that: It also includes a protective component, which includes a protective cover (61), a first spring (63), a slider (64) and a first retaining ring (62); The base (1) is circular, the protective cover (61) is circular, and the radius of the protective cover (61) is greater than the radius of the base (1). A plurality of sliders (64) are fixed to the side of the mounting seat (5). The protective cover (61) is sleeved outside the mounting seat (5), and the sliders (64) are slidably connected to the inner side of the protective cover (61). A first retaining ring (62) is fixed to the inner side wall of the protective cover (61), and the first retaining ring (62) is located above the mounting seat (5). One end of the first spring (63) is fixed to the bottom of the first retaining ring (62), and the other end of the first spring (63) is against the mounting seat (5).

4. The adjustable tennis ball pressure detection device according to claim 3, characterized in that: A second retaining ring (11) is installed on the side wall of the base (1), and the protective cover (61) is located above the second retaining ring (11).

5. The adjustable tennis ball pressure detection device according to claim 4, characterized in that: The protective component also includes a protective net cylinder (81) and a driving member. The base (1) is provided with a downwardly recessed ball seat (71), the protective net tube (81) and the driving member are both provided in the base (1), the mounting seat (5) is provided with an annular groove (13) around the ball seat (71), the driving member extends to the outside of the base (1), and the driving member drives the protective net tube (81) to pass through the annular groove (13) and extend to the base (1).

6. The adjustable tennis ball pressure detection device according to claim 5, characterized in that: The driving member includes a first driving rod (82), a second driving rod (84), a transmission belt (83) and a second spring. The transmission belt (83) is rotatably connected to the installation through a roller. The first driving rod (82) and the second driving rod (84) are both fixed on the transmission belt (83). A slot (12) is provided on the side wall of the base (1). The first driving rod (82) extends to the outside of the base (1) through the slot (12). The second driving rod (84) abuts against the bottom of the protective net tube (81); the second spring is connected to the bottom of the base (1), and the upper end of the second spring is lower than the bottom of the first driving rod (82).

7. The adjustable tennis ball pressure detection device according to claim 6, characterized in that: It also includes a pre-fixing member, which includes a slide (91), a clamping rod (92) and a third spring (94). The slide (91) is slidably connected to the base (1), the two clamping rods (92) are vertically slidably connected to the slide (91), the third spring (94) is arranged in the slide (91), and the two ends of the third spring (94) are respectively connected to the two clamping rods (92). The base (1) is provided with a clamping groove (14), wherein the two clamping grooves (14) are respectively located on both sides of the ball seat (71), and the clamping rod (92) extends to the base (1) through the clamping groove (14).

8. The adjustable tennis ball pressure detection device according to claim 7, characterized in that: The pre-fixing member includes a fourth spring (96) and a second sliding rod (97), Two second slide bars (97) are vertically arranged in the base (1), and the slide seat (91) is slidably connected between the two second slide bars (97). One end of the fourth spring (96) is fixed to the inner bottom wall of the base (1), and the other end of the fourth spring (96) is against the top of the slide seat (91). A clamping block (98) is provided on the second slide bar (97), and the clamping block (98) is arranged in a right triangle. The inclined surface of the clamping block (98) faces downward, and the bottom of the slide seat (91) is against the clamping block (98).

9. The adjustable tennis ball pressure detection device according to claim 8, characterized in that: The pre-fixed component also includes a trigger rod, which includes a protective tube (74) and a second screw (75). The second screw (75) is inserted into the protective tube (74) and the second screw (75) is threadedly connected to the protective tube (74). The protective tube (74) passes through the top of the base (1) and extends to the inside of the base (1). One side of the sliding seat (91) is connected to the second connecting rod (73). The bottom of the protective tube (74) is against the second connecting rod (73). A pressure rod (72) is installed at the bottom of the mounting seat (5), and the pressure rod (72) is located above the second screw (75).

10. The adjustable tennis ball pressure detection device according to claim 9, characterized in that: Buffer blocks (93) for enhancing the clamping force are provided on the facing surfaces of the two pressure rods (72).

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