Automatically inflatable ball

Abstract

The utility model discloses a kind of automatic inflating balls, including hollow sphere, hollow sphere is the elastic sphere of being able to elastically deform, recessed with inflation hole on the ball wall of hollow sphere, inflation hole is through the inside and outside of hollow sphere along the wall thickness direction of hollow sphere;When automatic inflation, under the extrusion of hollow sphere, extrusion of external force is removed, hollow sphere can elastically deform and restore to original sphere shape under the action of its own elastic force, during the recovery of hollow sphere, external gas enters hollow sphere through inflation hole;The average diameter of hollow sphere is ball diameter D;The average wall thickness T of hollow sphere satisfies the following function: T=T 127 × (D / 127) M , the aperture H of inflation hole of hollow sphere satisfies the following function: H=H 127 × (D / 127) 0.5 ;By this, it realizes the automatic inflation of ball, without inflator, experience is strong, and can quickly recover, and good resilience.

Description

Technical Field

[0001] This utility model relates to the field of rubber balls, and in particular to an automatically inflatable ball. Background Technology

[0002] There are two main types of rubber balls on the market. One type is an inflatable rubber ball similar to a soccer ball or basketball. It has a valve on the ball, and when the air inside the ball is insufficient, an air pump is needed to inflate the ball. The other type is a sealed rubber ball, which has a one-piece structure without a valve. If it leaks air, it cannot be inflated and cannot be used.

[0003] Rubber balls, including toy rubber balls, are usually flattened to reduce their volume in order to save on transportation costs. However, they need to be inflated before being sold or acquired by the buyer. Additionally, inflated toy balls need to be re-inflated if they leak air.

[0004] The existing inflatable rubber balls have the following problems in inflation: (1) They require an air pump, which increases costs; (2) The air pump is not frequently used and may be lost, affecting subsequent inflation; (3) The air pump is not suitable for children to use, which reduces children's experience of playing with rubber balls.

[0005] Therefore, a new technology needs to be developed to solve the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide an automatically inflatable ball that achieves automatic inflation without the need for an air pump, provides a superior user experience, and allows for rapid recovery with good resilience.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatically inflatable ball includes a hollow sphere, which is an elastic sphere capable of elastic deformation. An inflation hole is recessed on the wall of the hollow sphere, and the inflation hole penetrates the inner and outer sides of the hollow sphere along the wall thickness direction.

[0009] The average outer diameter of the hollow sphere is the sphere diameter D;

[0010] The average wall thickness T of the hollow sphere satisfies the following function:

[0011] T = T 127 ×(D / 127) M In this function: T 127 ∈[3.2mm, 4.1mm], D is the diameter of the sphere, T 127 Let M be the average wall thickness when the sphere diameter D is 127 mm, and M ∈ [0.8, 1.0].

[0012] The diameter H of the air inlet of the hollow sphere satisfies the following function:

[0013] H = H 127 ×(D / 127) 0.5 In this function: H 127 ∈[2.5mm, 4.0mm], D is the diameter of the sphere, H 127 The aperture is the diameter when the ball diameter D is 127 mm.

[0014] As a preferred embodiment, the diameter D of the ball is 125-300 mm.

[0015] As a preferred embodiment, the wall thickness T is 2.0-10.0 mm.

[0016] As a preferred embodiment, the aperture H is 1.5-6.0 mm.

[0017] As a preferred embodiment, the T 127 The thickness is 3.7 mm, and the H... 127 It is 4.0mm.

[0018] As a preferred embodiment, the cross-section of the inflation hole is circular.

[0019] As a preferred embodiment, the hollow sphere is made of elastic rubber.

[0020] As a preferred embodiment, the inner wall and / or outer wall of the hollow sphere are integrally provided with a reinforcing protrusion surrounding the outer periphery of the inflation hole.

[0021] As a preferred embodiment, one or two inflation holes are provided.

[0022] As a preferred embodiment, the rebound rate of the hollow sphere after automatic inflation is ≥48%, and the rebound rate is the ratio of the rebound height of the hollow sphere after free fall to the height of the hollow sphere after free fall, wherein the height of the hollow sphere after free fall is 150cm.

[0023] This invention has significant advantages and beneficial effects compared with existing technologies. Specifically, as can be seen from the above technical solution, it mainly involves designing the ball as a hollow sphere, making it an elastic sphere capable of elastic deformation. An inflation hole is recessed in the wall of the hollow sphere, extending along the wall thickness direction and penetrating both the inner and outer sides of the sphere. Thus, when the hollow sphere is compressed, upon release of the external force, it can elastically deform and return to its original spherical shape under its own elastic force. During this recovery process, external gas automatically enters the hollow sphere through the inflation hole, thereby achieving automatic inflation of the ball without the need for an air pump, providing a superior user experience. Furthermore, the average wall thickness T of the hollow sphere satisfies the following function: T = T127 ×(D / 127) M The diameter H of the air inlet of the hollow sphere satisfies the following function: H = H 127 ×(D / 127) 0.5 This ensures a good rebound rate and short recovery time after the hollow sphere is automatically inflated, allowing it to recover quickly and with good resilience. Furthermore, it only has a hollow sphere and an integrated air hole recessed on the hollow sphere, eliminating the need for an inflation valve. The structure is simple, ingenious, and easy to mold and manufacture.

[0024] To more clearly illustrate the structural features, technical means, and specific objectives and functions of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a front view of a ball according to an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of a sphere according to an embodiment of the present utility model;

[0027] Figure 3 This is a cross-sectional schematic diagram of a reinforcing protrusion on the outer wall of a ball according to an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional schematic diagram of a reinforcing protrusion protruding from the inner wall of a ball according to an embodiment of the present invention;

[0029] Figure 5 This is a cross-sectional schematic diagram of an embodiment of the present invention, showing that both the inner and outer walls of the sphere are provided with reinforcing protrusions.

[0030] Figure 6 This is a suggested range curve of the ball diameter D corresponding to the aperture H according to an embodiment of this utility model;

[0031] Figure 7 This is a curve showing the suggested range of the ball diameter D corresponding to the wall thickness T according to an embodiment of this utility model.

[0032] Explanation of reference numerals in the attached diagram:

[0033] 10. Hollow sphere; 20. Inflation hole

[0034] 30. Strengthen the convex parts. Detailed Implementation

[0035] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of the automatically inflatable ball provided in an embodiment of the present invention.

[0036] The self-inflating ball includes a hollow sphere 10, which is an elastic sphere capable of elastic deformation, preferably a rubber sphere. An inflation hole 20 is integrally recessed on the wall of the hollow sphere 10, extending along the wall thickness direction of the hollow sphere 10 through its inner and outer sides. The inner circumferential sidewall of the inflation hole 20 is the wall of the hollow sphere 10. This ensures that the inflation hole 20 remains open when the rubber sphere is in its natural state, allowing it to have only a hollow sphere 10 and an integrally recessed inflation hole 20, eliminating the need for an inflation valve. The structure is simple, ingenious, and easy to mold and manufacture. The hollow sphere 10 is made of elastic rubber, a combination of natural and synthetic rubber. Alternatively, the hollow sphere 10 can be made of non-elastic rubber, such as TPU or TPE, or other polymer materials with elasticity and resilience, as long as they can undergo elastic deformation.

[0037] The inner and / or outer walls of the hollow sphere 10 are integrally provided with reinforcing protrusions 30 that surround the outer periphery of the inflation hole 20. The reinforcing protrusions 30 have a ring-shaped structure surrounding the outer periphery of the inflation hole 20. In this way, the reinforcing protrusions 30 can strengthen and protect the periphery of the inflation hole 20, preventing the inflation hole 20 from being easily crushed and deformed when the hollow sphere 10 deforms, thus avoiding the phenomenon of the inflation hole 20 becoming relatively larger due to compression deformation. For example, Figure 3 This shows the structure of a reinforcing protrusion 30 integrally protruding from the outer wall of the hollow sphere 10, such as... Figure 4 The structure shown is a reinforcing protrusion 30 integrally formed on the inner wall of the hollow sphere 10, such as... Figure 5 The structure is shown with reinforcing protrusions 30 integrally formed on both the inner and outer walls of the hollow sphere 10. In practical applications, it is preferable to have reinforcing protrusions 30 integrally formed on both the inner and outer walls of the hollow sphere 10 to better strengthen and protect the inflation hole 20.

[0038] The cross-section of the air hole 20 is preferably circular. The air hole 20 can be straight (the diameter of the cross-section is the same or approximately the same everywhere). The reason for choosing a circular air hole 20 is that if an angular shape (such as a triangle or a square) is used, stress concentration is likely to occur when the hollow sphere 10 is deformed, which will lead to material cracking and reduce product durability.

[0039] During the compression of the hollow sphere 10, the gas is rapidly expelled and then re-enters the hollow sphere 10 after the pressure is released. This process creates an internal airflow assist effect on the inner wall of the hollow sphere 10, thus affecting the rebound efficiency. A larger diameter of the inflation hole 20 results in a faster air inlet and outlet rate, and a shorter time required for the flattened sphere to return to its original shape. However, due to the large volume of gas expelled during compression, the internal air pressure may be insufficient, leading to a decrease in rebound force. A smaller diameter of the inflation hole 20 restricts airflow, resulting in a slower recovery speed after flattening, but it retains more internal gas, creating higher air pressure and improving bounce performance. The preferred diameter H of the inflation hole 20 is 1.5-6.0 mm, and the diameter H needs to strike a balance between elasticity and recovery time. One or two inflation holes 20 can be provided. When two inflation holes 20 are provided, they are symmetrically arranged along the diameter direction of the hollow sphere 10.

[0040] When the self-inflating ball deflates, the gas inside the hollow sphere 10 is released through the inflation hole 20 under external pressure, causing the hollow sphere 10 to flatten. When the self-inflating ball is automatically inflated, the hollow sphere 10 is under pressure. When the external pressure is released, the hollow sphere 10 can elastically deform and return to its original spherical shape under its own elastic force. During the process of the hollow sphere 10 returning to its original shape, external gas automatically enters the hollow sphere 10 through the inflation hole 20. In this way, the rubber ball can be automatically inflated without the need for an air pump, providing a superior user experience.

[0041] The rebound rate of the hollow sphere 10 after automatic inflation is ≥48%, and preferably ≥68%. The rebound rate is the ratio of the rebound height of the hollow sphere 10 after free fall to the height of the hollow sphere 10 after free fall. The height of the hollow sphere 10 after free fall is preferably 150cm. Here, the test method for the rebound rate is: place the automatically inflated rubber ball at a height of 150cm above the ground and let it fall freely. After falling onto the tile floor, the rubber ball rebounds to a certain rebound height h. Then the rebound rate = (h / 150)×100%.

[0042] The average outer diameter of the hollow sphere 10 is the sphere diameter D; the sphere diameter D is preferably 125-300mm to suit different age groups and application scenarios; the average wall thickness T of the hollow sphere 10 is preferably 2.0-10.0mm, and the wall thickness can affect the support force and bounce performance.

[0043] To ensure good rebound rate of the hollow sphere 10 after automatic inflation for different sphere diameters, given the obtained value of sphere diameter D:

[0044] The average wall thickness T of the hollow sphere 10 satisfies the following function:

[0045] T = T 127 ×(D / 127) M In this function: T 127∈[3.2mm, 4.1mm], D is the diameter of the sphere, T 127 Let T be the average wall thickness when the sphere diameter D is 127 mm, M ∈ [0.8, 1.0], where T 127 The preferred thickness is 3.7mm; the following example uses M as 0.9.

[0046] The aperture H of the air inlet 20 of the hollow sphere 10 (taking a single inlet as an example) satisfies the following function:

[0047] H = H 127 ×(D / 127) 0.5 In this function: H 127 ∈[2.5mm, 4.0mm], D is the diameter of the sphere, H 127 The aperture is the diameter when the ball diameter D is 127 mm, where H 127 The preferred size is 4.0 mm.

[0048] Preferably, the suggested ranges for the ball diameter D corresponding to the wall thickness T and the aperture H are shown in the table below:

[0049] Ball diameter D (mm) Recommended wall thickness T (mm) Recommended aperture H (mm) 125 3.15-4.04 2.48-3.97 150 3.72-4.76 2.72-4.35 200 4.82-6.17 3.14-5.02 250 5.89-7.54 3.51-5.61 300 6.94-8.89 3.84-6.15

[0050] like Figure 6 As shown, the recommended range for the aperture H corresponding to the ball diameter D is displayed; as Figure 7 As shown, the recommended range for the ball diameter D corresponding to the wall thickness T is displayed.

[0051] The present invention will be further described below with reference to specific embodiments.

[0052] The hollow sphere 10 has a diameter D of 127 mm, a wall thickness T of 2.4 / 3.2 / 3.7 / 4.1 mm, and an inflation hole 20 diameter H of 1.8 / 4 / 6 mm (one inflation hole 20 and two inflation holes 20). The weight W of the hollow sphere 10 is 153.7 / 210 / 218.8 / 228.38 g. The rebound rate and recovery time data obtained under the above parameters are shown in the table below (rebound rate = (h / 150) × 100%, recovery time TR is the number of seconds required for the hollow sphere 10 to return to its original shape after being flattened):

[0053] Table 1 shows a wall thickness of 4.1 mm.

[0054]

[0055]

[0056] Table 2 shows a wall thickness of 3.7 mm.

[0057]

[0058] Table 3: Wall thickness 3.2mm

[0059]

[0060]

[0061] Table 4 wall thickness 2.4mm

[0062]

[0063]

[0064] From the data table of rebound rate and recovery time obtained from the above tests, we can see that: the relationship between weight W and thickness T is as follows: when the diameter D of the hollow sphere 10 is 127mm, the weight W and wall thickness T are approximately linearly related: W≈K1×T, where K1 is the proportionality constant between weight and wall thickness. According to the test data, K1∈[55g / mm, 66g / mm]. The relationship between aperture H and rebound rate is as follows: aperture H and rebound rate R have a parabolic inverse relationship. Too large or too small an aperture H will affect the performance. An aperture H range of 2.5mm-4mm can meet the rebound rate requirements. The relationship between aperture H and recovery time TR is as follows: recovery time TR is inversely proportional to aperture H, TR≈K2 / H, where K2 is the inverse proportionality constant between recovery time and aperture. According to the test data, K2∈[8, 16]. Overall performance ratio P: Combining the rebound rate R and recovery time TR, the performance ratio P = R / TR is defined as a comprehensive indicator, with the combination of T = 3.7mm and H = 4mm showing the best performance. Therefore, the optimal design range and parameter combinations are as follows:

[0065] When the ball diameter D = 127 mm, the following design parameters are adopted: T ∈ [3.2 mm, 4.1 mm], where the optimal value is Topt = 3.7 mm; H ∈ [2.5 mm, 4.0 mm], where the optimal value is Hopt = 4.0 mm (single hole); within this range, it can be ensured that: ideal rebound rate and fast recovery time; the optimal combination of values ​​is: Topt = 3.7 mm, Hopt = 4.0 mm (single hole), rebound rate R ≥ 68% (measured 69.1%), recovery time TR ≤ 1.5 s (measured 1.33 s), performance ratio P ≥ 45 (R is percentage, TR is seconds).

[0066] In summary, the key design feature of this invention lies in its hollow sphere design, making it an elastic sphere capable of elastic deformation. An inflation hole is recessed into the wall of the hollow sphere, extending along its wall thickness and penetrating both the inner and outer sides. Thus, when the hollow sphere is compressed and the external force is released, it elastically deforms and returns to its original spherical shape. During this recovery process, external gas automatically enters the hollow sphere through the inflation hole, achieving automatic inflation without the need for an air pump, providing a superior user experience. Furthermore, the average wall thickness T of the hollow sphere satisfies the following function: T = T 127 ×(D / 127) M The diameter H of the air inlet of the hollow sphere satisfies the following function: H = H 127 ×(D / 127) 0.5 This ensures a good rebound rate and short recovery time after the hollow sphere is automatically inflated, allowing it to recover quickly and with good resilience. Furthermore, it only has a hollow sphere and an integrated air hole recessed on the hollow sphere, eliminating the need for an inflation valve. The structure is simple, ingenious, and easy to mold and manufacture.

[0067] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An automatically inflatable ball, characterized by: The invention includes a hollow sphere, which is an elastic sphere capable of elastic deformation. An air inlet is recessed on the wall of the hollow sphere, and the air inlet penetrates the inner and outer sides of the hollow sphere along the wall thickness direction. The average outer diameter of the hollow sphere is the sphere diameter D; The average wall thickness T of the hollow sphere satisfies the following function: T = T 127 × (D / 127) M , where: T 127 ∈ [3.2mm, 4.1mm], D is the ball diameter, T 127 is the average wall thickness for a ball diameter D of 127mm, and M ∈ [0.8, 1.0]; The diameter H of the air inlet of the hollow sphere satisfies the following function: H = H 127 × (D / 127) 0.5 , where: H 127 ∈ [2.5mm, 4.0mm], D is the ball diameter, H 127 is the aperture diameter for a ball diameter D of 127mm.

2. The self-inflating ball of claim 1, wherein: The diameter D of the ball is 125-300mm.

3. The self-inflating ball of claim 1, wherein: The wall thickness T is 2.0-10.0 mm.

4. The self-inflating ball of claim 1, wherein: The aperture H is 1.5-6.0 mm.

5. The self-inflating ball of claim 1, wherein: The T 127 is 3.7 mm, the H 127 is 4.0 mm.

6. The self-inflating ball of claim 1, wherein: The cross-section of the inflation hole is circular.

7. The self-inflating ball of claim 1, wherein: The hollow sphere is made of elastic rubber.

8. The self-inflating ball of claim 1, wherein: The hollow sphere has an integrally formed reinforcing protrusion on its inner and / or outer walls that surrounds the outer periphery of the inflation hole.

9. The self-inflating ball of claim 1, wherein: The inflation port is provided with one or two.

10. The self-inflating ball of claim 1, wherein: The hollow sphere has a rebound rate of ≥48% after automatic inflation. The rebound rate is the ratio of the rebound height of the hollow sphere after free fall to the height of the hollow sphere after free fall. The height of the hollow sphere after free fall is 150cm.

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