Inflation anti-leakage ball needle

Abstract

An inflation air-leakage-preventing ball needle comprises a needle seat, a needle tube and an arch-shaped arm, the needle tube and the arch-shaped arm are arranged on the needle seat, the needle seat comprises a vertically-arranged tube barrel, the lower end of the tube barrel is communicated with the needle tube, an air inlet is formed in the upper end of the tube barrel, and an air return-preventing valve is further arranged in the tube barrel; the upper end of the needle tube is communicated with the tube barrel, and the lower end of the needle tube is an air outlet; the arch-shaped arm comprises an arc-shaped section and horizontal sections at the two ends of the arc-shaped section, the middle of the arc-shaped section is connected with the needle base, an opening of the arc-shaped section is upward, and the inner ends of the horizontal sections are connected with the end of the arc-shaped section and are perpendicular to the axis of the tube barrel. The anti-air-return valve in the needle seat can effectively prevent air in a ball from leaking when the ball needle is inserted into or pulled out of the ball, the arch-shaped arm can enable the ball needle to be conveniently held and operated, the stress surface of the ball needle in use is increased, the situation of slipping or falling off is avoided, and meanwhile the ball needle is compact in overall structure and convenient to manufacture.

Description

Technical Field

[0001] The utility model relates to the technical field of air-inflating needles, in particular to an air-inflating and leak-proof ball needle. Background Art

[0002] Basketball, football, volleyball and other balls are now commonly used fitness equipment. The commonly used ball inflation needles at this stage are cylindrical ball needles the size of soybeans. When inflating, you need to use multiple fingers to hold the ball needle and press it into the ball. However, due to the small force-bearing area of ​​this type of ball needle, it is easy to slip and difficult to operate. In addition, since there is no anti-leakage device, it is easy to leak at the ball needle air inlet when the ball needle is pressed into the ball and when the pump is taken down after inflation, reducing the inflation efficiency. The patent document with application number CN201820452540.7 discloses an anti-leakage basketball air needle. A one-way valve structure is set at the inflation port to prevent the gas in the ball from leaking out when the air needle is inserted or pulled out of the basketball. However, the patent is still inconvenient to operate and is prone to slipping and difficulty in bearing force. Utility Model Content

[0003] In order to solve the technical problems in the above background technology that the ball needle is easy to slip and difficult to operate during use, and the air inlet of the ball needle is easy to leak, the utility model provides an inflatable and leak-proof ball needle.

[0004] The technical solution of this utility model is as follows:

[0005] The utility model relates to an inflating leak-proof ball needle, which comprises a needle seat, a needle tube and a bow-shaped arm arranged thereon. The needle tube can be easily pushed into a ball to be inflated by holding the bow-shaped arm.

[0006] The needle seat includes a vertically arranged tube, the lower end of which is connected to the needle tube, the upper end is an air inlet, and an anti-return air valve is also provided inside the tube. Air is delivered to the needle tube through the air inlet of the tube, and the anti-return air valve in the tube is a one-way valve, which can effectively prevent gas leakage.

[0007] The needle tube is vertically arranged, and the upper end is connected with the tube, and the lower end is an air outlet. The needle tube is vertically injected into the ball to be inflated, and air is delivered to the inside of the ball through the air outlet.

[0008] The bow arm includes an arc segment and horizontal segments at both ends thereof. The middle part of the arc segment is connected to the needle seat, and the opening of the arc segment is upward. The inner end of the horizontal segment is connected to the end of the arc segment and is perpendicular to the axis of the tube. The needle seat is located in the middle of the arc segment. The bow arm is evenly stressed to avoid deviation. The setting of the horizontal segment can increase the stress-bearing area of ​​the bow arm.

[0009] Furthermore, the horizontal section and the arc section are coplanar, and the outer end is arranged away from the needle seat, so as to ensure that the directions of the forces acting on the horizontal section and the arc section are consistent during use.

[0010] Preferably, a reinforcement piece is provided between the arc segment and the tube to enhance the stability between the bow arm and the needle seat.

[0011] As a preferred embodiment, at least one of the horizontal sections is further provided with an annular elbow at its outer end, and the closing setting of the annular elbow can make the end of the bow-shaped arm more rounded, thereby avoiding accidental scratches when the user presses hard.

[0012] Further preferably, the outer ring of the tube and one end close to the air inlet is provided with threads to facilitate connection with an air pump.

[0013] Furthermore, the needle tube is coaxially arranged with the needle seat to ensure vertical transmission of the force and avoid bending of the needle tube during use.

[0014] As a preferred embodiment, the anti-return air valve includes a first fixed plate and a second fixed plate which are arranged up and down and have a circular through hole in the middle, and a telescopic plug is provided between the two fixed plates. The anti-return air valve is a one-way valve, which can effectively prevent gas leakage. The circular through hole can allow gas to pass through when it is unobstructed, and the setting of the telescopic plug can block the circular through hole to prevent gas from passing through.

[0015] Specifically, the telescopic plug includes a spring connected to the second fixed plate at one end, and a circular plate arranged at the other end of the spring, and the circular plate is configured to be able to press against the lower end of the opening of the first fixed plate under the action of the spring. When the spring is in a relaxed state, the circular plate presses against the lower end of the opening of the first fixed plate. At this time, the circular through hole at the first fixed plate is in a closed state. When the air inlet starts to deliver air, the spring is in a compressed state, and the circular plate moves away from the first fixed plate. At this time, the circular through hole at the first fixed plate is unobstructed, and the gas passes through the circular through holes of the first fixed plate and the second fixed plate in turn and enters the needle tube.

[0016] Through the above design, the utility model provides an inflatable leak-proof ball needle. The setting of the anti-return air valve in the needle seat can effectively prevent the gas in the ball from leaking out when the ball needle (the above-mentioned inflatable leak-proof ball needle) is inserted into or pulled out of the ball. The setting of the bow-shaped arm can make the ball needle easy to hold and operate, and increases the force-bearing surface of the ball needle when in use, avoiding slipping or falling off. At the same time, the overall structure of the utility model is compact and easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 A front view of the ball needle in the embodiment;

[0019] Figure 2 A top view of the ball needle in the embodiment;

[0020] Figure 3 is a cross-sectional view of the ball needle in the embodiment;

[0021] The components represented by the reference numerals in the figure are:

[0022] 1. Needle tube; 11. Air outlet; 2. Needle seat; 21. Air inlet; 22. Anti-return valve; 221. First fixing plate; 222. Second fixing plate; 223. Circular plate; 3. Bow arm; 31. Arc section; 32. Horizontal section; 33. Reinforcement member. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0024] Example

[0025] This embodiment provides an inflatable leak-proof balloon needle, comprising a needle seat 2 and a needle tube 1 and an arched arm 3 arranged thereon, and the needle tube 1 can be easily pushed into the ball to be inflated by holding the arched arm 3. The specific structure of the ball needle (the above-mentioned inflatable leak-proof balloon needle) is described below.

[0026] In this embodiment, the needle seat 2 includes a vertically arranged tube, the lower end of the tube is connected to the needle tube 1, the upper end is an air inlet 21, and an anti-return air valve 22 is also provided inside the tube. Air is delivered to the needle tube 1 through the air inlet 21 of the tube, and the anti-return air valve 22 in the tube is a one-way valve, which can effectively prevent gas leakage.

[0027] Further preferably, the outer ring of the tube and one end close to the air inlet 21 is provided with threads to facilitate connection with an air pump.

[0028] In this embodiment, the needle tube 1 is vertically arranged, and the upper end is connected to the tube, and the lower end is the air outlet 11. The needle tube 1 can be vertically injected into the ball to be inflated, and air is delivered to the inside of the ball through the air outlet 11.

[0029] Furthermore, the needle tube 1 and the needle seat 2 are coaxially arranged to ensure vertical transmission of the force and avoid bending of the needle tube 1 during use.

[0030] Further preferably, the lengths of the needle tube 1 and the needle seat 2 are not less than 25 mm and not more than 30 mm, thereby ensuring that the ball needle can match the size of an existing ball while avoiding material waste.

[0031] As a preferred embodiment, the anti-return air valve 22 includes a first fixed plate 221 and a second fixed plate 222 which are arranged up and down and have a circular through hole in the middle. A telescopic plug is provided between the two fixed plates. The anti-return air valve 22 is a one-way valve, which can effectively prevent gas leakage. The circular through hole can allow gas to pass through when it is unobstructed, and the setting of the telescopic plug can block the circular through hole to prevent gas from passing through.

[0032] Specifically, the telescopic plug includes a spring connected to the second fixed plate 222 at one end, and a circular plate 223 arranged at the other end of the spring, and the circular plate 223 is configured to be able to press against the lower end of the opening of the first fixed plate 221 under the action of the spring. When the spring is in a relaxed state, the circular plate 223 presses against the lower end of the opening of the first fixed plate 221. At this time, the circular through hole at the first fixed plate 221 is in a closed state. When the air inlet 21 starts to deliver air, the spring is in a compressed state, and the circular plate 223 is away from the first fixed plate 221. At this time, the circular through hole at the first fixed plate 221 is unobstructed, and the gas passes through the circular through holes of the first fixed plate 221 and the second fixed plate 222 in turn and enters the needle tube 1.

[0033] In this embodiment, the bow arm 3 includes an arc segment 31 and horizontal segments 32 at both ends thereof. The middle part of the arc segment 31 is connected to the needle seat 2, and the opening of the arc segment 31 is upward. The inner end of the horizontal segment 32 is connected to the end of the arc segment 31 and is perpendicular to the axis of the tube. The needle seat 2 is located in the middle of the arc segment 31. The bow arm 3 is evenly stressed to avoid deviation. The setting of the horizontal segment 32 can increase the stress-bearing area of ​​the bow arm 3.

[0034] Further preferably, the horizontal projection length of the bow-shaped arm 3 is not less than 80 mm and not more than 90 mm, and the structure is compact, which ensures that the user has sufficient force-bearing surface when holding the bow-shaped arm 3 while avoiding waste of manufacturing materials.

[0035] Furthermore, the horizontal section 32 is coplanar with the arc section 31 , and the outer end is arranged away from the needle seat 2 , so as to ensure that the directions of the forces acting on the horizontal section 32 and the arc section 31 are consistent during use.

[0036] Preferably, a reinforcing member 33 is further provided between the arc segment 31 and the tube, so as to enhance the stability between the bow arm 3 and the needle seat 2 .

[0037] As a preferred embodiment, at least one of the horizontal sections 32 is further provided with an annular elbow at its outer end, and the closing setting of the annular elbow can make the end of the bow arm 3 smoother, thereby preventing accidental scratches when the user presses hard.

[0038] Through the above design, the utility model provides an inflatable leak-proof ball needle. The setting of the anti-return valve 22 in the needle seat 2 can effectively prevent the gas in the ball from leaking out when the ball needle is inserted into or pulled out of the ball. The setting of the bow arm 3 can make the ball needle convenient to hold and operate, and increases the force-bearing surface of the ball needle when in use, avoiding slipping or falling off. At the same time, the overall structure of the utility model is compact and easy to manufacture, and the design of multiple arc interfaces can avoid accidental scratches during operation of the user.

Claims

1. An inflatable leak-proof balloon needle, characterized in that: It comprises a needle seat (2) and a needle tube (1) and an arched arm (3) arranged thereon; The needle seat (2) comprises a vertically arranged tube, the lower end of which is in communication with the needle tube (1), the upper end of which is an air inlet (21), and an anti-return valve (22) is also provided inside the tube; The needle tube (1) is arranged vertically, and the upper end is connected to the tube, and the lower end is an air outlet (11); The bow-shaped arm (3) comprises an arc segment (31) and horizontal segments (32) at both ends thereof; the middle portion of the arc segment (31) is connected to the needle seat (2), and the opening of the arc segment (31) faces upward; the inner end of the horizontal segment (32) is connected to the end of the arc segment (31) and is perpendicular to the axis of the tube.

2. The inflatable leak-proof balloon needle according to claim 1, characterized in that: The horizontal section (32) is coplanar with the arc section (31), and the outer end is arranged away from the needle seat (2).

3. The inflatable leak-proof balloon needle according to claim 1, characterized in that: A reinforcing member (33) is also provided between the arc segment (31) and the tube.

4. The inflatable leak-proof balloon needle according to claim 2, characterized in that: At least one of the horizontal sections (32) is also provided with an annular elbow at its outer end.

5. The inflatable leak-proof balloon needle according to claim 1, characterized in that: The outer ring of the tube and one end close to the air inlet (21) is provided with a thread.

6. The inflatable leak-proof balloon needle according to claim 1, characterized in that: The needle tube (1) and the needle seat (2) are coaxially arranged.

7. The inflatable leak-proof balloon needle according to claim 1, characterized in that: The anti-return air valve (22) comprises a first fixing plate (221) and a second fixing plate (222) which are arranged up and down and each of which has a circular through hole in the middle, and a telescopic plug is provided between the two fixing plates.

8. The inflatable leak-proof balloon needle according to claim 7, characterized in that: The telescopic plug comprises a spring with one end connected to the second fixing plate (222), and a circular plate (223) arranged at the other end of the spring, and the circular plate is arranged to be able to press against the lower end of the opening of the first fixing plate (221) under the action of the spring.

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