Sand prevention valve core for inflatable ball

Abstract

The utility model relates to a sand prevention valve core for an inflatable ball, belongs to the technical field of valve cores, and aims to solve the problems that in the using process of an existing inflatable ball, sand grains or particle sundries can be filled in an inflation hole of the valve core, the sand grains or particle sundries can influence normal use during inflation, and the valve core is damaged or the use of the inflatable ball is influenced. The valve core comprises a valve core body, an inflation hole penetrating through the valve core body is formed in the valve core body, a hole body, at least located at one end of the outer side of a ball body, of the inflation hole is of an air inlet small hole structure, and when the valve core body is installed on the ball body, the air inlet small hole is automatically closed and sealed under the elastic effect. According to the sand-prevention valve core for the inflatable ball, the sand-prevention effect of the ball body can be effectively improved, and the service life of the valve core and the inflatable ball is prolonged.

Description

Technical Field

[0001] The utility model relates to a sand-proof valve core for an inflatable ball, belonging to the technical field of valve cores. Background Art

[0002] There are various balls on the market, such as leather balls used in sports, including basketballs, volleyballs, footballs, etc. Existing inflatable balls generally consist of a sphere and a valve core fixed to the sphere by heat melting. When the sphere needs to be inflated, the valve core can be inserted through the air needle at the front end of the air delivery pipe of the air pump to fill the sphere with gas. After the air needle is pulled out, the valve core blocks the air inside and outside the sphere, making the sphere have a certain elasticity for people to use.

[0003] During the use of existing balls, due to the presence of sand or granular debris in the use environment, they will fill the inflation hole of the ball valve core, or even directly enter the inflation hole. As a result, when the ball needs to be inflated, the sand or granular debris filled in the inflation hole or in the hole will affect the insertion of the air needle or get stuck between the air needle and the valve core, causing wear of the valve core, or the inflation hole cannot be closed due to foreign matter and deflates, thus affecting the use of the inflatable ball. Therefore, there is an urgent need for a sand-proof valve core to solve the problem that during the use of existing inflatable balls, sand or granular debris will fill the inflation hole of the valve core, and the sand or granular debris will affect normal use during inflation, causing damage to the valve core or affecting the use of the inflatable ball. Utility Model Content

[0004] The utility model aims to provide a sand-proof valve core for an inflatable ball to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand-proof valve core for an inflatable ball, comprising a valve core body, the valve core body being provided with an inflation hole that penetrates the valve core body, and the inflation hole at least adjacent to one end of the outer side of the sphere is arranged as an air intake hole, and when the valve core body is installed on the sphere, the air intake hole is automatically closed and sealed under the action of elasticity.

[0006] Specifically, an air needle positioning portion is integrally formed at the end of the valve core body located outside the spherical body, and is used to position the air needle for inserting into the air inlet hole.

[0007] Specifically, the air needle positioning part includes a positioning ring and an air inlet hole indicator; the positioning ring is arranged on the outside of the air inlet hole, and it is arranged concentrically with the air inlet hole; a plurality of air inlet hole indicators are arranged at intervals along the circumference of the outer side of the positioning ring, and the plurality of air inlet hole indicators are arranged with the air inlet hole as the center of the circle, for indicating the position of the air inlet hole.

[0008] Specifically, the air intake hole indicator includes two raised strips; the two raised strips are arranged parallel to each other on the positioning ring, and an indicator groove is formed therebetween; the indicator grooves formed by a plurality of air intake hole indicators intersect at the position where the air intake hole is located in a virtual plane.

[0009] Specifically, the positioning ring is a circular protrusion, which encloses the end of the valve core into a circular area to form a positioning portion for inserting the air needle.

[0010] Specifically, the circular area is recessed inwardly toward one end of the valve core body located in the sphere with the air intake hole as the center, forming a recessed positioning portion.

[0011] Specifically, the recessed depth of the recessed positioning portion is 1 / 20 of the length of the valve core.

[0012] Specifically, the hole body of the inflation hole is a small air intake hole structure along the valve core.

[0013] Specifically, the end of the valve core body located at one end inside the sphere is recessed inwardly with the inflation hole as the center, forming an air needle guide hole with a larger aperture than the inflation hole.

[0014] Specifically, the hole depth of the air needle guide hole is 1 / 20 of the length of the valve core.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The present application sets the inflation hole of the valve core at least at one end of the outer side of the sphere as an air intake hole structure. Due to the elastic core of the valve core, the air intake hole is automatically closed under normal conditions due to the elastic effect of the core, so that the valve core can effectively prevent sand or granular debris from filling the inflation hole, thus playing a protective role. When inflation is required, the air needle can normally open the air intake hole and insert into the inflation hole for inflation. The valve core of the present application can effectively improve the anti-sand effect of the sphere and increase the service life of the valve core and the inflation ball.

[0017] 2. On the basis of the above, in order to facilitate the opening of the inflation hole and simplify the valve core manufacturing process, the present application sets the inflation hole as a small air intake hole structure along the valve core, that is, the small air intake hole type inflation hole is opened along the valve core, which is convenient for opening the hole and simplifies the valve core manufacturing process.

[0018] 3. On the basis of the above, considering that the air intake hole is closed under normal conditions. During inflation, in order to facilitate the insertion of the air needle, the present application provides an air needle positioning portion including a positioning ring and an air intake hole indicator, wherein the positioning ring is a circular protrusion, and the circular protrusion encloses the end of the valve core into a circular area to form a positioning portion for the insertion of the air needle, which is convenient for positioning the air needle during insertion. Several air intake hole indicators are arranged at intervals along the outer circumference of the positioning ring to indicate the position of the air intake hole, so as to facilitate the user to insert the air needle into the air intake hole.

[0019] 4. On the basis of the above, in order to facilitate the air needle to extend from the inflation hole at one end of the valve core located inside the sphere, an inwardly recessed air needle guide hole is provided at the end of the valve core located inside the sphere to improve the air needle insertion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the sand-proof valve core for an inflatable ball of the utility model;

[0021] Figure 2 It is a front view of the sand-proof valve core for an inflatable ball of the utility model;

[0022] Figure 3 for Figure 2 Sectional view at AA;

[0023] Figure 4 It is a top view of the sand-proof valve core for an inflatable ball of the utility model.

[0024] Among them: 1. Valve core; 2. Air intake hole; 3. Air needle positioning part; 4. Positioning ring; 5. Air intake hole indicator; 6. Concave positioning part; 7. Air needle guide hole. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0026] See also Figure 1-Figure 4 A sand-proof valve core for an inflatable ball comprises a valve core body 1, the valve core body is provided with an inflation hole penetrating the valve core body, the inflation hole body is an air intake hole 2 structure, and when the valve core body is installed on the ball, the air intake hole is automatically closed and sealed under the action of elasticity.

[0027] In this embodiment, the end of the valve core located outside the spherical body is integrally formed with an air needle positioning portion 3 for positioning the air needle to be inserted into the air inlet hole 2.

[0028] Furthermore, the air needle positioning part 3 includes a positioning ring 4 and an air inlet hole indicator 5; the positioning ring 4 is arranged outside the air inlet hole 2, and it is arranged concentrically with the air inlet hole; three air inlet hole indicators 5 are arranged at intervals along the outer circumference of the positioning ring 4, and the three air inlet hole indicators are arranged with the air inlet hole as the center of the circle, for indicating the position of the air inlet hole. The positioning ring 4 of this embodiment is a circular protrusion, which encloses the end of the valve core into a circular area to form a positioning part for the insertion of the air needle, and the circular area is concave inwardly with the air inlet hole as the center toward one end of the valve core body located in the sphere, forming a concave positioning part 6, and the concave depth of the concave positioning part is 1 / 20 of the length of the valve core.

[0029] The air intake hole indicator 5 of this embodiment includes two raised strips; the two raised strips are arranged parallel to each other on the positioning ring, and an indicator groove is formed therebetween; the indicator grooves formed by the three air intake hole indicators intersect at the position of the air intake hole in the virtual plane.

[0030] In addition, the end of the valve core of this embodiment located at one end inside the sphere is recessed inward with the inflation hole as the center to form an air needle guide hole 7 with a hole diameter larger than the inflation hole diameter. The hole depth of the air needle guide hole is 1 / 20 of the length of the valve core.

[0031] Working principle: When the sand-proof valve core for the inflatable ball of this embodiment is in use, the inflation hole on the valve core is set as an air intake hole, and under the elastic effect of the core, it is in an automatically closed and sealed state. It can ensure that the valve core does not leak, and can also ensure that sand or granular debris from the outside will not enter and fill the inflation hole, playing a role in sand prevention and anti-blocking. When inflating, the operator can quickly place the needle of the air needle against the recessed positioning part of the valve core for positioning. Then, by observing the intersection position on the extension line of the indicator groove formed by the three air intake hole indicators, the position of the air intake hole can be estimated, and then the needle of the air needle is inserted into the valve core from the air intake hole. At the same time, when the air needle is inserted, when it enters the air needle guide hole, the operator will feel that the air needle insertion resistance changes, and it can be judged that the air needle has penetrated the valve core. After the air needle is inserted, inflation can be carried out, and the operation is convenient.

[0032] The implementation methods of the utility model are described in detail above in conjunction with the embodiments, but the utility model is not limited to the above-mentioned implementation methods. For ordinary technicians in this technical field, after knowing the contents recorded in the utility model, they can make several equivalent changes and substitutions thereto without departing from the principle of the utility model. These equivalent changes and substitutions should also be regarded as belonging to the protection scope of the utility model.

Claims

1. A sand-proof valve core for an inflatable ball, comprising a valve core body, characterized in that: The valve core is provided with an inflation hole that penetrates the valve core, and the inflation hole at least at one end outside the sphere is configured as an air intake hole structure, and when the valve core is installed on the sphere, the air intake hole is automatically closed and sealed under the action of elasticity.

2. The sand-proof valve core for an inflatable ball according to claim 1, characterized in that: The end of the valve core body located outside the spherical body is integrally formed with an air needle positioning portion for positioning the air needle to be inserted into the air inlet hole.

3. The sand-proof valve core for an inflatable ball according to claim 2, characterized in that: The air needle positioning part includes a positioning ring and an air inlet hole indicator; the positioning ring is arranged on the outside of the air inlet hole, and it is arranged concentrically with the air inlet hole; a plurality of the air inlet hole indicators are arranged at intervals along the outer circumference of the positioning ring, and the plurality of air inlet hole indicators are arranged with the air inlet hole as the center of the circle, for indicating the position of the air inlet hole.

4. The sand-proof valve core for an inflatable ball according to claim 3, characterized in that: The air intake hole indicator comprises two raised strips; the two raised strips are arranged parallel to each other on the positioning ring and form an indicator groove therebetween; the indicator grooves formed by a plurality of air intake hole indicators intersect at the position of the air intake hole in a virtual plane.

5. The sand-proof valve core for an inflatable ball according to claim 3, characterized in that: The positioning ring is a circular protrusion, which encloses the end of the valve core into a circular area to form a positioning portion for inserting the air needle.

6. The sand-proof valve core for an inflatable ball according to claim 5, characterized in that: The circular area is recessed inwardly toward one end of the valve core body located in the sphere with the air inlet hole as the center, forming a recessed positioning portion.

7. The sand-proof valve core for an inflatable ball according to claim 6, characterized in that: The recessed depth of the recessed positioning portion is 1 / 20 of the length of the valve core.

8. The sand-proof valve core for an inflatable ball according to claim 1, characterized in that: The hole body of the inflation hole is a small air intake hole structure along the valve core.

9. The sand-proof valve core for an inflatable ball according to claim 1, characterized in that: The end of the valve core body located at one end inside the sphere is recessed inwardly with the inflation hole as the center to form an air needle guide hole with a hole diameter larger than the diameter of the inflation hole.

10. The sand-proof valve core for an inflatable ball according to claim 9, characterized in that: The hole depth of the air needle guide hole is 1 / 20 of the length of the valve core.

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