Fitness ball with stable gravity center

Abstract

The utility model relates to a fitness ball with a stable gravity center, belongs to the field of fitness equipment, and provides the fitness ball with the stable gravity center to solve the problems that an existing fitness ball cannot be fully filled, is prone to shaking and is prone to injuring a user. The fitness ball with the stable gravity center comprises a ball body provided with a filling opening, and a sealing plug is arranged at the filling opening; a water absorption expansion layer is arranged in the ball body, and the water absorption expansion layer is formed by filling the ball body with water absorption expansion particles through the filling opening to absorb water. After the water-absorbing expanding agent is added into the ball body, the interior of the ball body expands by adding water, then gaps in the ball body are filled, and the fitness ball is completely filled with the filler, so that the interior of the ball body does not shake when a user exercises, the user is prevented from being hurt, and the safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of fitness equipment, in particular to a fitness ball with a stable center of gravity. Background Art

[0002] Fitness balls are usually used to enhance the core strength of fitness people and improve body balance and flexibility. Fitness balls are usually made of a hard material or a soft material. Hard materials are usually hard plastic or solid rubber, and soft materials can be cloth or soft plastic. During exercise, in order to achieve the purpose of training, users often fill the fitness ball with materials of different weights to increase the weight of the fitness ball. Various weight materials such as yellow sand, iron sand, and water are often used. The hard fitness ball is heavy after filling with weights, and because the material is hard, if it is lost during use, it is easy to hit the body or the floor, which has certain safety hazards. Soft fitness balls made of cloth lack elasticity, the inside of the ball cannot be inflated, and it cannot play a buffering role, and the effect of use is poor. The products with soft plastic as the outer layer that are more popular on the market at present have good elasticity after soft PVC is inflated. Even if it is lost during use, it will not cause more serious damage to the body and the floor. Therefore, soft inflatable fitness balls have good buffering effect and high safety performance. However, when filling the fitness ball with weights, special tools are required, usually using air pressure to push the weights into the ball through the small holes. In theory, the weights cannot fill the entire ball because the weights are poured into the ball under pressure, the soft ball expands under the action of air pressure, and the weights are then poured into the ball; when all the weights are poured in, the air pressure in the ball will be released to keep the internal and external pressures balanced. Since there is no air inside the ball, the soft ball skin will wrap all the weights at this time. The entire soft ball is similar to wrapping a hard iron block with soft skin. A certain proportion of air must be left in the ball to ensure that the ball is filled. In this case, the entire fitness ball is not filled with solid weights, and a space gap will be formed inside the sphere. The weights will shake inside the sphere as the fitness ball moves. This shaking will produce recoil and pause forces (similar to shaking a half-filled bottle of water, where the unfilled water will shake as the bottle shakes, and this shaking will increase exponentially with the strength of the shaking of the bottle). This recoil and pause force will act on the human body and damage the user's joints, leading to sports injuries. Utility Model Content

[0003] In view of the problem that existing fitness balls cannot be completely filled and are prone to shaking and causing injuries to users, the utility model provides a fitness ball with a stable center of gravity. Water-absorbing and swelling particles are arranged inside the ball to form a water-absorbing and swelling layer, which then fills the gaps in the ball. The interior of the fitness ball is completely filled with fillers, so that when the user exercises, the inside of the ball will not shake, thereby avoiding injuries to the user, and ensuring safety.

[0004] The technical solution adopted by the present utility model is as follows: A fitness ball with a stable center of gravity, including a sphere provided with a filling port, a sealing plug is provided at the filling port, an absorbent expansion layer is provided inside the sphere, and the absorbent expansion layer is formed by filling absorbent expansion particles into the sphere through the filling port and then absorbing water.

[0005] The absorbent expansion particles are common absorbent expansion agents, which include superabsorbent resin (SAP), acrylate-based absorbent expansion agents, natural polymer modified absorbent expansion agents, inorganic absorbent expansion agents, and polyurethane absorbent expansion agents. After adding the absorbent expansion agent into the sphere and adding water, the inside of the sphere expands. The internal voids of the sphere can be filled with the absorbent expansion particles, thereby ensuring the stable center of gravity of the fitness ball, not easy to shake during use, and facilitating the user to exert force.

[0006] When filling weights inside the sphere, a certain number of absorbent expansion particles can be poured into the sphere together with the weights according to needs, and then a certain proportion of water is added. The absorbent expansion particles expand after absorbing water, thus filling the entire sphere. After the sphere is sealed and air is added to make the sphere expand, the absorbent expansion particles can continue to expand, and then the whole sphere can be kept in a solid state all the time. Because we will leave a certain proportion of margin when adding the expansion particles, and the expandable material is affected by the outer wall of the sphere. If there is no void inside, the expansion will stop, and when new voids are generated, the expansion will continue.

[0007] As an improvement, a pull ring is further provided on the sphere for a connecting piece to pass through, and the pull ring is arranged opposite to the filling port. Setting the pull ring can facilitate lifting the sphere, and thus is convenient for hitting.

[0008] Furthermore, the sphere includes a first connecting portion and a second connecting portion, the pull ring is arranged on the first connecting portion, and the filling port is arranged on the second connecting portion. The first connecting portion and the second connecting portion can adopt materials with different hardnesses and colors, which can not only meet diverse needs but also provide a more beautiful visual effect.

[0009] Furthermore, the second connecting portion extends towards the first connecting portion and is closely connected to the first connecting portion, and a overlapping section is formed between the second connecting portion and the first connecting portion. By setting the overlapping section, a relatively firm connection is formed between the first connecting portion and the second connecting portion, ensuring the connection strength and not easy to crack.

[0010] As another improvement, a handle is further provided on the sphere for holding by hand, and the handle is arranged opposite to the filling port. In this setting, the handle and the filling port are arranged opposite to each other or on the same side to avoid accidentally touching the sealing plug during use and causing leakage.

[0011] Further, the sphere includes a first connecting portion and a second connecting portion. The handle is disposed on the first connecting portion, and the filling port is disposed on the second connecting portion or below the handle. The first connecting portion and the second connecting portion can be made of materials with different hardnesses and colors, which can not only meet diverse requirements but also provide a relatively aesthetic visual effect.

[0012] Further, the second connecting portion extends towards the first connecting portion and is tightly connected to the first connecting portion, forming a overlapping section between the second connecting portion and the first connecting portion. By providing the overlapping section, a relatively firm connection is formed between the first connecting portion and the second connecting portion, ensuring the connection strength and being not easily cracked.

[0013] Further, the filling port includes a hollow column embedded in the sphere. The sphere wraps around the outside of the hollow column and forms a blocking section at the end face of the hollow column; the blocking section is annular, and the hollow area surrounded by it forms a relief hole, and the sealing plug is stuffed into the relief hole.

[0014] Further, the filling port includes a through hole provided on the sphere, and the sealing plug is provided with a handle and covers the through hole.

[0015] The beneficial effects of the present utility model are as follows: This application is a fitness ball with a stable center of gravity. After adding a water-absorbing swelling agent into the sphere and adding water to cause internal expansion of the sphere, the internal voids of the sphere can be filled with water-absorbing swelling particles, thereby ensuring the stable center of gravity of the fitness ball, being not easily shaken during use, and facilitating the user to exert force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial cross-sectional structural schematic diagram of Embodiment 1;

[0017] Figure 2 It is Figure 1 the enlarged structural schematic diagram of Area A in

[0018] Figure 3 It is the overall structural schematic diagram of Embodiment 2;

[0019] Figure 4 It is a partial cross-sectional structural schematic diagram of Embodiment 2;

[0020] Figure 5 It is Figure 4 the enlarged structural schematic diagram of Area B in

[0021] Figure 6 It is the overall structural schematic diagram of Embodiment 3;

[0022] Figure 7 It is a partial cross-sectional structural schematic diagram of Embodiment 3;

[0023] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of the middle C area;

[0024] Figure 9 It is a schematic diagram of the overall structure of Example 4;

[0025] Figure 10 This is a structural diagram of the sealing plug of Example 4;

[0026] In the figure: 1-sphere; 11-first connecting part; 12-second connecting part; 13-hollow column; 14-pull ring; 15-handle; 2-filling port; 3-sealing plug; 4-water absorption and expansion layer. DETAILED DESCRIPTION

[0027] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0028] Example 1

[0029] This embodiment is a fitness ball with a stable center of gravity. Figure 1 and Figure 2 As shown, it comprises a round sphere 1, on which a filling port 2 is provided, a sealing plug 3 is provided at the filling port 2, and a water-absorbing and expanding layer 4 is provided inside the sphere 1, and the water-absorbing and expanding layer 4 is formed after water-absorbing and expanding particles are filled into the sphere through the filling port 2 to absorb water. In this embodiment, the water-absorbing and expanding particles are super absorbent resin (SAP).

[0030] The filling port 2 includes a hollow column 13 pre-buried on the sphere, the sphere 1 is wrapped around the outside of the hollow column 13, and a blocking section is formed at the end surface of the hollow column 13; the blocking section is annular, and the hollow area surrounded by it forms a clearance hole, and the sealing plug 3 is filled in the clearance hole. By removing or filling the sealing plug, the filling port is in an open or sealed state, and the hollow column can provide a certain strength to prevent leakage.

[0031] When filling the sphere with weights, a certain amount of water-absorbing and expanding particles can be poured into the sphere together with the weights as needed, and then a certain proportion of water is added. The water-absorbing and expanding particles expand after absorbing water, thereby filling the entire sphere. After the sphere is sealed, the expanding objects are restricted by the sphere. After the sphere is expanded by adding air, the water-absorbing and expanding particles can continue to expand, thereby keeping the entire sphere in a solid state.

[0032] Example 2

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, this embodiment is a fitness ball with a stable center of gravity, comprising a ball 1 provided with a filling port 2, a sealing plug 3 provided at the filling port 2, a water-absorbing and expanding layer 4 provided inside the ball 1, and the water-absorbing and expanding layer 4 is formed after water is absorbed by water-absorbing and expanding particles filled into the ball 1 through the filling port. In this embodiment, the water-absorbing and expanding particles are super absorbent resin (SAP).

[0034] The sphere 1 is also provided with a pull ring 14 for the connection member to pass through, and the pull ring 14 is arranged opposite to the filling port 2. The pull ring 14 can be arranged to facilitate the lifting of the sphere 1, thereby facilitating the hitting. The sphere 1 includes a first connection part 11 and a second connection part 12, the pull ring 14 is arranged on the first connection part 11, and the filling port 2 is arranged on the second connection part 12. The first connection part 11 and the second connection part 12 can be made of materials of different hardness and color, which can not only meet various needs, but also provide a more beautiful visual effect.

[0035] The second connection part 12 extends toward the first connection part 11 and is closely connected to the first connection part 11, forming an overlap section between the second connection part 12 and the first connection part 11. By providing the overlap section, a relatively firm connection is formed between the first connection part 11 and the second connection part 12, ensuring the connection strength and not prone to cracking.

[0036] The filling port 2 includes a hollow column 13 pre-buried on the sphere, the sphere 1 is wrapped around the outside of the hollow column 13, and a blocking section is formed at the end surface of the hollow column 13; the blocking section is annular, and the hollow area surrounded by it forms a clearance hole, and the sealing plug 3 is filled in the clearance hole. By removing or filling the sealing plug, the filling port is in an open or sealed state, and the hollow column can provide a certain strength to prevent leakage.

[0037] Example 3

[0038] like Figure 6 , Figure 7 and Figure 8As shown in the figure, the difference between this embodiment and Embodiment 1 is that: a handle 15 is further provided on the sphere 1 for easy holding, and the handle 15 is arranged opposite to the filling port 2. The sphere 1 includes a first connecting portion 11 and a second connecting portion 12. The handle 15 is arranged on the first connecting portion 11, and the filling port 2 is arranged on the second connecting portion 12. The filling port 2 includes a through hole provided on the sphere 1. The sealing plug 3 is provided with a handle 31 and a plug portion 32, and the plug portion 32 seals the through hole. The first connecting portion 11 and the second connecting portion 12 can be made of materials with different hardnesses and colors, which can not only meet various requirements but also provide a more beautiful visual effect. The filling port 2 includes a hollow column 13 embedded in the sphere. The sphere 1 is wrapped outside the hollow column 13, and a blocking section is formed at the end face of the hollow column 13. The blocking section is annular, and the hollow area surrounded by it forms a relief hole. The sealing plug 3 is stuffed into the relief hole. By removing or stuffing the sealing plug, the filling port is in an open or sealed state. The provision of the hollow column can provide a certain strength and prevent material leakage.

[0039] Embodiment 4

[0040] As Figure 9 and Figure 10 As shown in the figure, the difference between this embodiment and Embodiment 1 is that: a handle 15 is further provided on the sphere 1 for easy holding, and the handle 15 is arranged on the same side as the filling port 2. The sphere 1 includes a first connecting portion 11 and a second connecting portion 12. The handle 15 and the filling port 2 are arranged on the first connecting portion 11. The filling port 2 includes a through hole provided on the sphere 1. The sealing plug 3 is provided with a handle 31 and seals the through hole. The first connecting portion 11 and the second connecting portion 12 can be made of materials with different hardnesses and colors, which can not only meet various requirements but also provide a more beautiful visual effect.

[0041] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A fitness ball with a stable center of gravity, comprising a spherical body provided with a filling port, wherein a sealing plug is provided at the filling port, wherein: A water-absorbing and expanding layer is arranged in the sphere, and the water-absorbing and expanding layer is formed by filling water-absorbing and expanding particles into the sphere through the filling port to absorb water.

2. The fitness ball with a stable center of gravity according to claim 1, characterized in that: The sphere is also provided with a pull ring for the connector to pass through, and the pull ring is arranged opposite to the filling port.

3. The fitness ball with a stable center of gravity according to claim 2, characterized in that: The sphere includes a first connection portion and a second connection portion, the pull ring is arranged on the first connection portion, and the filling port is arranged on the second connection portion.

4. The fitness ball with a stable center of gravity according to claim 3, characterized in that: The second connection portion extends toward the first connection portion and is tightly connected to the first connection portion, forming an overlap section between the second connection portion and the first connection portion.

5. The fitness ball with a stable center of gravity according to claim 1, characterized in that: The sphere is also provided with a handle for hand-holding, and the handle is arranged opposite to or on the same side as the filling port.

6. The fitness ball with a stable center of gravity according to claim 5, characterized in that: The sphere includes a first connection portion and a second connection portion, the handle is arranged on the first connection portion, and the filling port is arranged on the second connection portion or below the handle.

7. The fitness ball with a stable center of gravity according to claim 6, characterized in that: The second connection portion extends toward the first connection portion and is tightly connected to the first connection portion, forming an overlap section between the second connection portion and the first connection portion.

8. The fitness ball with a stable center of gravity according to claim 1, characterized in that: The filling port includes a hollow column pre-buried on the sphere, the sphere is wrapped around the outside of the hollow column, and a blocking section is formed at the end face of the hollow column; the blocking section is annular, and the hollow area surrounded by it forms a clearance hole, and the sealing plug is filled in the clearance hole.

9. The fitness ball with a stable center of gravity according to claim 1, characterized in that: The filling port comprises a through hole arranged on the sphere, and the sealing plug is provided with a handle and a cover at the through hole.

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