Tennis ball internal pressure maintaining box

Abstract

The utility model discloses a tennis ball internal pressure maintaining box, which belongs to the field of tennis ball preservation and comprises a tennis ball pipe, a barometer for detecting air pressure and a pressurizing device for pressurizing the interior of the tennis ball pipe are arranged on the bottom surface of the tennis ball pipe, and a throwing opening for taking and placing a tennis ball is arranged on the side wall of the open end of the tennis ball pipe. Compared with the prior art, the tennis tube outer throwing opening is formed in the side face of the top face of the tennis tube, the piston pushing assembly which is used for sealing the throwing opening and can pressurize the throwing opening is installed on the top face of the tennis tube, and a channel of the tennis tube is sealed through a rubber pad of the piston pushing assembly. Then the interior of the pipeline of the tennis pipe is pressurized by rotating a stud rod of the stepped screw rod; by means of the structure, the situation that when the tennis tube is opened, the sealing cover of the tennis tube is instantly broken due to high pressure in the tube, and consequently a tennis ball is scattered can be effectively prevented, when the rubber pad is opened in the gap, the rubber pad is fixed through the step-shaped screw, and it is guaranteed that the situation that the tennis ball is broken away in the pressure relief process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to tennis preservation field, specifically is a tennis internal pressure keeping box. BACKGROUND

[0002] In the existing sports type, tennis as a full body movement, it can exercise the body's various parts, enhance the physique, wherein the ball body used in tennis is mostly made of rubber, in order to guarantee its elasticity, a soft liner is arranged in the tennis, the soft liner is filled with air (nitrogen), to keep the elastic stability, however, when placing under normal pressure, the pressure in the ball will slowly leak, therefore, in order to guarantee that the tennis can keep elasticity when using, people usually put it into the special tennis internal pressure keeping box for placing.

[0003] The existing tennis internal pressure keeping box is mostly sealed through the special tennis pipe (the single open structure of the tennis pipe, the open end uses rubber washer and pipe cover to carry out screw sealing), and installs the air pressure gauge and pressurizing device on the bottom surface of the tennis pipe, strengthens the air pressure in the tennis pipe through the pressurizing device, and monitors the pressure in the tennis pipe according to the data of the air pressure gauge.

[0004] When taking out the tennis, because the pressure in the tennis pipe is greater than the pressure outside, when opening, it often jumps the pipe cover due to the high pressure, thereby causing personnel injury, or falling the tennis pipe due to fright, so that the tennis falls out completely. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is that the existing tennis internal pressure keeping box cannot release the pressure in the pipe cover before opening, so that it often jumps the pipe cover when opening.

[0006] To solve the above technical problem, the technical scheme provided by the utility model is as follows: a tennis internal pressure keeping box, including the tennis pipe, the bottom surface of the tennis pipe is provided with the air pressure gauge for detecting air pressure and the pressurizing device for pressurizing the inside of the tennis pipe, the open end side wall of the tennis pipe is provided with the throwing opening for taking and placing the tennis, the open end of the tennis pipe is provided with the piston pushing assembly for closing the throwing opening and pressurizing the inside of the tennis pipe, the piston pushing assembly includes the rubber pad in the inside of the tennis pipe and the stepped screw rod passing through the rubber pad, the open end of the tennis pipe is provided with the nut closure cover corresponding to the stepped screw rod.

[0007] As an improvement, the nut closure cover and the open end of the tennis pipe are connected through welding.

[0008] As an improvement, the stepped screw rod includes the stud rod passing through the nut closure cover and the T-shaped push rod passing through the rubber pad.

[0009] As an improvement, the thin column end of the T-shaped push rod is connected with the stud rod by welding.

[0010] As an improvement, the size length of the T-shaped push rod is less than the length between the bottom surface of the delivery port and the nut closure cover.

[0011] As an improvement, the pressurizing device is a press-type inflator fixed on the bottom surface of the tennis tube by a bolt structure.

[0012] The device sets the external delivery port of the tennis tube on the side surface of the top surface of the tennis tube, and installs a piston pushing assembly for closing the delivery port and pressurizing the same on the top surface of the tennis tube, seals the channel of the tennis tube through the rubber pad of the piston pushing assembly, and pressurizes the inside of the pipeline of the tennis tube through the stud rod of the rotating stepped screw rod. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a general structure diagram of the tennis internal pressure maintaining box.

[0014] Figure 2 is a general structure sectional view of the tennis internal pressure maintaining box.

[0015] Figure 3 is an exploded view of the piston pushing assembly of the tennis internal pressure maintaining box.

[0016] Figure 4 is a stepped screw rod structure diagram of the tennis internal pressure maintaining box.

[0017] As shown in the drawings: 1, tennis tube; 11, delivery port; 2, air pressure gauge; 3, pressurizing device; 4, piston pushing assembly; 41, rubber pad; 42, stepped screw rod; 421, stud rod; 422, T-shaped push rod; 43, nut closure cover. DETAILED DESCRIPTION

[0018] The utility model will be further described in detail in combination with the drawings.

[0019] As described in the specification Figure 1As shown, including tennis tube 1, the bottom of the tennis tube 1 is provided with a pressure gauge 2 for detecting air pressure and a pressurizing device 3 for pressurizing the inside of the tennis tube 1, the pressurizing device 3 is a pressurized inflator fixed on the bottom of the tennis tube 1 by bolt structure, the pressurized inflator and the pressure gauge 2 are installed on the bottom of the tennis tube 1 by screws, the air pressure inside the tennis tube 1 is detected by the pressure gauge 2, so that the tennis inside the tennis tube 1 is kept elastic, when the pressure is insufficient, the pressurized inflator can be pressed to inflate it, the pressurized inflator is a micro inflator.

[0020] As shown in the description accompanying drawings Figure 2 、 3 , 4, the open end side wall of the tennis tube 1 is provided with a putting opening 11 for taking and placing tennis balls, the open end of the tennis tube 1 is provided with a piston pushing assembly 4 for closing the putting opening 11 and pressurizing the inside of the tennis tube 1, the piston pushing assembly 4 comprises a rubber pad 41 located in the inside of the tennis tube 1 and a stepped screw rod 42 penetrating through the rubber pad 41, the stepped screw rod 42 comprises a screw rod 421 penetrating through a nut closing cover 43 and a T-shaped push rod 422 penetrating through the rubber pad 41, the size of the T-shaped push rod 422 is smaller than the length between the bottom of the putting opening 11 and the nut closing cover 43; the open end of the tennis tube 1 is provided with a nut closing cover 43 corresponding to the stepped screw rod 42, the screw rod 421 of the stepped screw rod 42 penetrates through the screw hole of the nut closing cover 43, the thick column end of the T-shaped push rod 422 is fixed in the T-shaped groove in the inside of the rubber pad 41 (referring to the connection of the connecting push rod of the needle cylinder and the rubber pad), the thin column end of the T-shaped push rod 422 is welded on the bottom of the screw rod 421, a knob is installed on the other end of the screw rod 421, the rubber pad 41 is pushed into the inside of the tennis tube 1 from the open end of the tennis tube 1, the nut closing cover 43 is welded on the open end of the tennis tube 1 by using a welding machine to seal, finally, a punching machine is used to punch the putting opening 11 on the side wall of the tennis tube 1 (the position of the putting opening 11 cannot be located between the rubber pad 41 and the bottom of the tennis tube 1, and the size of the T-shaped push rod 422 is smaller than the length between the bottom of the putting opening 11 and the nut closing cover 43, so that when the pressure of the tennis tube 1 is released, the screw rod 421 is connected with the nut closing cover 43, so that the situation of bouncing tennis balls and the rubber pad 41 is avoided).

[0021] In the specific implementation of the utility model, the knob of the screw rod 421 is reversed, so that the rubber pad 41 is located above the putting opening 11, after the tennis balls are put into the putting opening 11, the knob of the screw rod 421 is turned, so that the rubber pad 41 is sealed after the tennis tube 1, continuous rotation can pressurize the inside of the tennis tube 1, when the pressure reaches the standard value, the rotation is stopped, when the rotation is not moving but the pressure value cannot be reached, the pressurized inflator is repeatedly pressed to pressurize the inside of the tennis tube 1 again.

[0022] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A tennis ball internal pressure maintaining case comprising a tennis ball tube (1), the bottom surface of said tennis ball tube (1) being provided with a gas pressure gauge (2) for detecting the gas pressure and a pressurizing device (3) for pressurizing the inside of the tennis ball tube (1), characterized in that: The open end side wall of the tennis ball tube (1) is provided with a tennis ball taking and placing discharge port (11), the open end of the tennis ball tube (1) is provided with a piston pushing assembly (4) for closing the discharge port (11) and pressurizing the inside of the tennis ball tube (1), the piston pushing assembly (4) comprises a rubber pad (41) located inside the tennis ball tube (1) and a stepped screw rod (42) penetrating through the rubber pad (41), and the open end of the tennis ball tube (1) is provided with a nut closing cover (43) corresponding to the stepped screw rod (42).

2. A tennis ball internal pressure maintaining case according to claim 1, characterized by: The nut closing cover (43) is connected with the open end of the tennis ball tube (1) by welding.

3. A tennis ball internal pressure maintaining case according to claim 1, characterized by: The stepped screw rod (42) comprises a stud rod (421) penetrating through the nut closing cover (43) and a T-shaped pushing rod (422) penetrating through the rubber pad (41).

4. A tennis ball internal pressure maintaining case according to claim 3, characterized in that: The thin column end of the T-shaped pushing rod (422) is connected with the stud rod (421) by welding.

5. A tennis ball internal pressure maintaining case according to claim 3, characterized in that: The size length of the T-shaped pushing rod (422) is less than the length between the bottom surface of the discharge port (11) and the nut closing cover (43).

6. A tennis ball internal pressure maintaining case according to claim 1, characterized by: The pressurizing device (3) is a press type inflator fixed on the bottom surface of the tennis ball tube (1) by a bolt structure.

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