Automatic inflation ball

Abstract

The invention discloses an automatic inflation ball which comprises a hollow ball body, the hollow ball body is an elastic ball body capable of elastically deforming, an inflation hole is concavely formed in the ball wall of the hollow ball body, and the inflation hole penetrates through the inner side and the outer side of the hollow ball body in the wall thickness direction of the hollow ball body; during automatic inflation, when the hollow ball body is extruded and extrusion of external force is relieved, the hollow ball body can generate elastic deformation to recover to the original ball body shape under the action of self elasticity, and in the recovery process of the hollow ball body, external gas enters the hollow ball body through the inflation hole; the external average diameter of the hollow sphere is sphere diameter D; the average wall thickness T of the hollow sphere meets the following function: T = T127 * (D / 127) M, and the aperture H of the inflation hole of the hollow sphere meets the following function: H = H127 * (D / 127) 0.5; therefore, automatic inflation of the ball is achieved, an inflator is not needed, the experience feeling is high, rapid recovery can be achieved, and the rebound resilience is good.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber balls, and in particular to a ball that can be automatically inflated. Background Art

[0002] There are mainly two types of rubber balls on the market. One is an inflatable rubber ball similar to a football or a basketball, with a valve on the sphere. When the air in the ball is insufficient, a pump needs to be used in cooperation with a needle to inflate the sphere. The other is a sealed rubber ball, which has an integral structure and no valve. After leakage, it cannot be inflated and cannot be used continuously.

[0003] Rubber balls, including toy rubber balls, usually need to be flattened to reduce the volume in order to save transportation costs. But when they are sold or in the hands of buyers, they need to be inflated. In addition, the inflated toy balls also need to be inflated again after leakage.

[0004] The existing inflatable rubber balls have the following problems in inflation: (1) A pump needs to be equipped, increasing the cost; (2) The pump is not commonly used and may be lost, affecting subsequent inflation; (3) The pump is not suitable for children to use, reducing the experience of children playing with rubber balls.

[0005] Therefore, it is necessary to research a new technology to solve the above problems. Summary of the Invention

[0006] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present invention is to provide a ball that can be automatically inflated, which realizes the automatic inflation of the ball, does not require a pump, has a strong sense of experience, and can quickly recover with good resilience.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A ball that can be automatically inflated, including a hollow sphere, the hollow sphere is an elastic sphere capable of elastic deformation, and an inflation hole is recessed on the spherical wall of the hollow sphere, and the inflation hole penetrates through the inner and outer sides of the hollow sphere along the wall thickness direction of the hollow sphere;

[0009] When deflating, the gas in the hollow sphere is extruded by an external force and discharged from the inflation hole, so that the hollow sphere becomes flattened;

[0010] When automatically inflating, when the hollow sphere is under extrusion, the external force extrusion is released, and the hollow sphere can elastically deform and return to the original spherical shape under the action of its own elastic force. During the recovery process of the hollow sphere, external gas enters the hollow sphere through the inflation hole;

[0011] The average outer diameter of the hollow sphere is the ball diameter D;

[0012] The average wall thickness T of the hollow sphere satisfies the following function:

[0013] T = T 127 × (D / 127) M , where in this function: T 127 ∈ [3.2 mm, 4.1 mm], D is the sphere diameter, and T 127 is the average wall thickness when the sphere diameter D is 127 mm, and M ∈ [0.8, 1.0];

[0014] The aperture diameter H of the inflation hole of the hollow sphere satisfies the following function:

[0015] H = H 127 × (D / 127) 0.5 , where in this function: H 127 ∈ [2.5 mm, 4.0 mm], D is the sphere diameter, and H 127 is the aperture diameter when the sphere diameter D is 127 mm.

[0016] As a preferred solution, the sphere diameter D is 125 - 300 mm.

[0017] As a preferred solution, the wall thickness T is 2.0 - 10.0 mm.

[0018] As a preferred solution, the aperture diameter H is 1.5 - 6.0 mm.

[0019] As a preferred solution, the T 127 is 3.7 mm, and the H 127 is 4.0 mm.

[0020] As a preferred solution, the cross-section of the inflation hole is circular.

[0021] As a preferred solution, the material of the hollow sphere is elastic rubber.

[0022] As a preferred solution, the inner wall and / or outer wall of the hollow sphere integrally protrude with a reinforcing protrusion surrounding the outer periphery of the inflation hole.

[0023] As a preferred solution, one or two inflation holes are provided.

[0024] As a preferred solution, 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 free fall of the hollow sphere, and the height of free fall of the hollow sphere is 150 cm.

[0025] The present invention has obvious advantages and beneficial effects compared with the prior art. Specifically, as can be seen from the above technical solution, it mainly designs the ball as a hollow sphere, makes the hollow sphere an elastic sphere capable of elastic deformation, and concavely provides an air inlet hole on the spherical wall of the hollow sphere, so that the air inlet hole penetrates through the inner and outer sides of the hollow sphere along the wall thickness direction of the hollow sphere. In this way, when the hollow sphere is under extrusion and the external extrusion force is removed, the hollow sphere can elastically deform under its own elastic force and return to the original spherical shape. During the recovery process of the hollow sphere, external gas automatically enters the hollow sphere through the air inlet hole. Thus, it realizes automatic inflation of the ball without a pump, and has a strong sense of experience; and, by making the average wall thickness T of the hollow sphere satisfy the following function: T = T 127 ×(D / 127) M , and making the aperture H of the air inlet hole of the hollow sphere satisfy the following function: H = H 127 ×(D / 127) 0.5 , this can ensure good rebound rate after automatic inflation of the hollow sphere, ensure short recovery time, enable it to quickly recover, and have good resilience; and, it only has a hollow sphere and an air inlet hole integrally concavely provided on the hollow sphere, without the need to design an air inflation valve, with a simple and ingenious structure and easy to form and manufacture.

[0026] To more clearly elaborate on the structural features, technical means, and the specific purposes and functions achieved by the present invention, the following will further describe the present invention in detail with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a front view schematic diagram of the ball of the embodiment of the present invention;

[0028] Figure 2 is a cross-sectional view schematic diagram of the ball of the embodiment of the present invention;

[0029] Figure 3 is a cross-sectional view schematic diagram of the ball of the embodiment of the present invention with a reinforcing convex part convexly provided on the outer wall of the ball;

[0030] Figure 4 is a cross-sectional view schematic diagram of the ball of the embodiment of the present invention with a reinforcing convex part convexly provided on the inner wall of the ball;

[0031] Figure 5 is a cross-sectional view schematic diagram of the ball of the embodiment of the present invention with reinforcing convex parts convexly provided on both the inner wall and the outer wall of the ball;

[0032] Figure 6 is a curve graph of the recommended range of the aperture H corresponding to the ball diameter D of the embodiment of the present invention;

[0033] Figure 7 is a curve graph of the recommended range of the wall thickness T corresponding to the ball diameter D of the embodiment of the present invention.

[0034] Description of the accompanying drawings:

[0035] 10. Hollow sphere 20. Inflatable hole

[0036] 30. Strengthen the convex part. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 7 As shown, it shows the specific structure of the self-inflating ball provided by an embodiment of the present invention.

[0038] The self-inflating ball comprises a hollow sphere 10, which is an elastic sphere capable of elastic deformation, and is preferably a rubber ball; an inflation hole 20 is integrally provided on the wall of the hollow sphere 10, and the inflation hole 20 penetrates the inner and outer sides of the hollow sphere 10 along the wall thickness direction of the hollow sphere 10, and the inner peripheral side wall of the inflation hole 20 is the wall of the hollow sphere 10. In this way, the inflation hole 20 remains conductive when the rubber ball is in a natural state, so that it can only have the hollow sphere 10 and the inflation hole 20 integrally provided on the hollow sphere 10, without the need to design an inflation valve, the structure is simple and ingenious, and easy to form and manufacture; the material of the hollow sphere 10 is an elastic rubber made of a combination of natural rubber and synthetic rubber. Of course, the material of the hollow sphere 10 can also be non-elastic rubber, such as TPU or TPE, or the material of the hollow sphere 10 can be other polymer materials with elasticity and resilience, as long as it can be elastically deformed.

[0039] The inner wall and / or outer wall of the hollow sphere 10 is integrally provided with a reinforcing protrusion 30 surrounding the outer periphery of the inflation hole 20. The reinforcing protrusion 30 is an annular structure surrounding the outer periphery of the inflation hole 20. In this way, the reinforcing protrusion 30 can play a role in strengthening the surrounding side of the inflation hole 20, thereby preventing the inflation hole 20 from being squeezed and deformed and easily ruptured when the inflation hole 20 deforms with the hollow sphere 10, thereby preventing the hole diameter from becoming relatively larger due to the compression deformation. Figure 3 The structure of the outer wall of the hollow sphere 10 is shown as follows: Figure 4 The structure of the hollow sphere 10 is shown as follows: a reinforcing protrusion 30 is provided on the inner wall of the hollow sphere 10. Figure 5 The structure shows that the inner wall and the outer wall of the hollow sphere 10 are integrally provided with a reinforcing protrusion 30 ; in actual application, it is preferred to integrally provide the reinforcing protrusion 30 on the inner wall and the outer wall of the hollow sphere 10 to better strengthen the protection of the inflation hole 20 .

[0040] The cross-section of the inflation hole 20 is preferably circular, and the inflation hole 20 can be straight (the cross-sectional diameters at all locations are the same or approximately the same). A circular inflation hole 20 is chosen because if an angular shape (such as a triangle or square) is used, stress concentration is likely to occur when the hollow sphere 10 is deformed, causing material rupture and reducing product durability.

[0041] During the compression process of the hollow sphere 10, the gas is quickly discharged and then re-enters the hollow sphere 10 after the pressure is released. This process has an internal air flow assisting effect on the inner wall of the hollow sphere 10, thereby affecting the rebound efficiency. The larger the aperture of the inflation hole 20: the faster the air inlet and outlet rate, and the shorter the time required to return to the original shape after being flattened. However, due to the large exhaust volume during compression, the internal air pressure is insufficient and the resilience decreases. The smaller the aperture of the inflation hole 20: the air circulation is restricted, and the recovery speed after being flattened is slow, but more internal gas can be retained to form a higher air pressure and improve the bouncing performance. The aperture H of the inflation hole 20 is preferably 1.5 - 6.0 mm, and the aperture H needs to balance elasticity and recovery time; there can be one or two inflation holes 20. When two inflation holes 20 are provided, the two inflation holes 20 are symmetrically arranged along the diameter direction of the hollow sphere 10.

[0042] When the self-inflating ball deflates, the gas in the hollow sphere 10 is externally discharged from the inflation hole 20 under the action of an external force, so that the hollow sphere 10 becomes flattened; when the self-inflating ball automatically inflates, when the hollow sphere 10 is under extrusion, the external force extrusion is removed, and the hollow sphere 10 can elastically deform and return to the original spherical shape under the action of its own elastic force. During the recovery process of the hollow sphere 10, the external gas automatically enters the hollow sphere 10 through the inflation hole 20; thus, it realizes the automatic inflation of the rubber ball without a pump and has a strong sense of experience.

[0043] The rebound rate of the hollow sphere 10 after automatic inflation is ≥ 48%, and preferably, the rebound rate of the hollow sphere 10 after automatic inflation is ≥ 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 150 cm. Here, the test method for the rebound rate is: place the self-inflating rubber ball at a height of 150 cm from the ground and let it do a free fall motion. After hitting the ceramic tile floor, the rubber ball rebounds to a certain rebound height h, then the rebound rate = (h / 150) × 100%.

[0044] The external average diameter of the hollow sphere 10 is the ball diameter D; the ball diameter D is preferably 125 - 300 mm to suit different age groups and application scenarios; the average wall thickness T of the hollow sphere 10 is preferably 2.0 - 10.0 mm, and the wall thickness can affect the supporting force and bouncing performance.

[0045] To ensure a good rebound rate of the hollow sphere 10 after automatic inflation under different ball diameters, with the value of the ball diameter D obtained:

[0046] The average wall thickness T of the hollow sphere 10 satisfies the following function:

[0047] T = T 127 ×(D / 127) M In this function: T127 ∈ [3.2 mm, 4.1 mm], D is the ball diameter, T 127 is the average wall thickness when the ball diameter D is 127 mm, M ∈ [0.8, 1.0], where T 127 is preferably 3.7 mm. Hereinafter, M is taken as 0.9 as an example;

[0048] The aperture H of the inflation hole 20 of the hollow sphere 10 (taking a single hole as an example) satisfies the following function:

[0049] H = H 127 × (D / 127) 0.5 , in this function: H 127 ∈ [2.5 mm, 4.0 mm], D is the ball diameter, H 127 is the aperture when the ball diameter D is 127 mm, where H 127 is preferably 4.0 mm.

[0050] Preferably, the recommended ranges of the wall thickness T corresponding to the ball diameter D and the aperture H are as follows in the table:

[0051]

[0052]

[0053] As Figure 6 shown, it shows the recommended range of the aperture H corresponding to the ball diameter D; as Figure 7 shown, it shows the recommended range of the wall thickness T corresponding to the ball diameter D.

[0054] The present invention will be further described below in conjunction with specific embodiments.

[0055] The ball diameter D of the hollow sphere 10 is 127 mm, the wall thickness T of the hollow sphere 10 is 2.4 / 3.2 / 3.7 / 4.1 mm, the aperture H of the inflation hole 20 of the hollow sphere 10 is 1.8 / 4 / 6 mm (1 inflation hole 20 and 2 inflation holes 20), and the weight W of the hollow sphere 10 is 153.7 / 210 / 218.8 / 228.38 g. The data of the rebound rate and the recovery time obtained by testing under the premise of the above parameters are as follows in the table (rebound rate = (h / 150) × 100%, and the recovery time TR is the number of seconds required for the hollow sphere 10 to return to its original state after being flattened):

[0056] Table 1 Wall thickness 4.1 mm

[0057]

[0058]

[0059] Table 2 Wall thickness 3.7 mm

[0060]

[0061] Table 3 Wall thickness: 3.2 mm

[0062]

[0063]

[0064] Table 4 Wall thickness: 2.4 mm

[0065]

[0066]

[0067] From the data table of the rebound rate and recovery time obtained from the above tests, it can be seen that the relationship between the weight W and the thickness T is as follows: when the sphere diameter D of the hollow sphere 10 is 127 mm, the weight W and the wall thickness T are approximately linearly correlated: W≈K1×T, where K1 is the proportionality constant between the weight and the wall thickness. According to the test data, K1∈[55 g / mm, 66 g / mm]. The relationship between the aperture H and the rebound rate is that the aperture H and the rebound rate R show a parabolic inverse relationship. If the aperture H is too large or too small, it will affect the performance. When the range of the aperture H is 2.5 mm - 4 mm, the rebound rate requirements can be met. The relationship between the aperture H and the recovery time TR is that the recovery time TR is inversely proportional to the aperture H, TR≈K2 / H, where K2 is the inverse proportionality constant between the recovery time and the aperture. According to the test data, K2∈[8, 16]. The comprehensive performance ratio P: By combining the comprehensive rebound rate R and the recovery time TR, the performance ratio P = R / TR is defined as a comprehensive index. The combination of T = 3.7 mm and H = 4 mm shows the best performance. Thus, it can be obtained that the preferred design range and parameter combinations are as follows:

[0068] When the sphere diameter D = 127 mm, the following design parameters are adopted: T∈[3.2 mm, 4.1 mm], and the optimal value is Topt = 3.7 mm; H∈[2.5 mm, 4.0 mm], and the optimal value is Hopt = 4.0 mm (single hole); within this range, it can be ensured that the rebound rate is ideal and the recovery time is relatively fast; the optimal value combination: Topt = 3.7 mm, Hopt = 4.0 mm (single hole), the rebound rate R≥68% (measured 69.1%), the recovery time TR≤1.5 s (measured 1.33 s), and the performance ratio P≥45 (R is in percentage, TR is in seconds).

[0069] In summary, the key design point of the present invention is that the ball is designed as a hollow sphere, the hollow sphere is an elastic sphere capable of elastic deformation, and an inflation hole is recessed on the spherical wall of the hollow sphere, so that the inflation hole penetrates the inner and outer sides of the hollow sphere along the wall thickness direction of the hollow sphere. In this way, when the hollow sphere is under extrusion and the external extrusion force is removed, the hollow sphere can undergo elastic deformation under its own elastic force and return to the original spherical shape. During the recovery process of the hollow sphere, external gas automatically enters the hollow sphere through the inflation hole. Thus, it realizes automatic inflation of the ball without a pump and has a strong sense of experience; and, by making the average wall thickness T of the hollow sphere satisfy the following function: T = T 127 ×(D / 127) M , and making the aperture H of the inflation hole of the hollow sphere satisfy the following function: H = H 127 ×(D / 127) 0.5 , this can ensure good rebound rate after the hollow sphere is automatically inflated, ensure a short recovery time, enable it to recover quickly, and have good resilience; and, it only has a hollow sphere and an inflation hole integrally recessed on the hollow sphere, without the need to design an inflation valve, and the structure is simple and ingenious, making it easy to form and manufacture.

[0070] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatically inflatable ball, characterized in that: It includes a hollow sphere, and the hollow sphere is an elastic sphere capable of elastic deformation. An inflation hole is recessed on the spherical wall of the hollow sphere, and the inflation hole penetrates through the inner and outer sides of the hollow sphere along the wall thickness direction of the hollow sphere; When deflating, the gas in the hollow sphere is extruded by an external force and discharged from the inflation hole, so that the hollow sphere becomes flattened; When automatically inflating, when the hollow sphere is under extrusion and the external force extrusion is released, the hollow sphere can undergo elastic deformation and return to its original spherical shape under the action of its own elastic force. During the recovery process of the hollow sphere, external gas enters the hollow sphere through the inflation hole; 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 in this function: T 127 ∈ [3.2 mm, 4.1 mm], D is the ball diameter, and T 127 is the average wall thickness when the ball diameter D is 127 mm, and M ∈ [0.8, 1.0]; The aperture H of the inflation hole of the hollow sphere satisfies the following function: H = H 127 × (D / 127) 0.5 , where in this function: H 127 ∈ [2.5 mm, 4.0 mm], D is the ball diameter, and H 127 is the aperture diameter when the ball diameter D is 127 mm.

2. The automatically inflatable ball according to claim 1, characterized in that: The sphere diameter D is 125 - 300 mm.

3. The automatically inflatable ball according to claim 1, characterized in that: The wall thickness T is 2.0 - 10.0 mm.

4. The automatically inflatable ball according to claim 1, characterized in that: The aperture H is 1.5 - 6.0 mm.

5. The automatically inflatable ball according to claim 1, wherein: The said T 127 is 3.7 mm, and the said H 127 is 4.0 mm.

6. The automatically inflatable ball according to claim 1, characterized in that: The cross-section of the inflation hole is circular.

7. The automatically inflatable ball according to claim 1, wherein: The material of the hollow sphere is elastic rubber.

8. The automatically inflatable ball according to claim 1, characterized in that: A reinforcing convex part surrounding the outer periphery of the inflation hole is integrally convex on the inner wall and / or outer wall of the hollow sphere.

9. The automatically inflatable ball according to claim 1, characterized in that: One or two inflation holes are provided.

10. The automatically inflatable ball according to claim 1, characterized in that: 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's free fall. The height of the hollow sphere's free fall is 150 cm.

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