Training filler

Abstract

The application discloses a training filling body, which comprises a body, a partition and a filler. The body is divided into a filling part and a closed space part by the partition. The filling part is filled with the filler, which at least comprises filling particles. The filling part filled with the filler constitutes a load part of the training filling body. The closed space part constitutes a part of the training filling body for gripping. The material constituting the filling part is softer or more elastic than the material constituting the closed space part. The filling part and the closed space part are not communicated with each other. The filler is limited in the filling part and cannot enter the closed space part. The training filling body of the application will not damage the floor or hurt the trainer. Meanwhile, the relative stability of the center of gravity can be maintained along with the action of the trainer in the training use, so that the training action of the trainer is smooth and coherent, the sports interest of the trainer is enhanced, and the persistence of the training is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to a training filler, in particular to a training filler with relative center of gravity stability for indoor fitness and training. BACKGROUND

[0002] Power and gravity training tools, such as dumbbells and kettlebells, have been widely welcomed by the public, especially women, in recent years.

[0003] Traditional dumbbells and kettlebells are made of iron as a whole or have iron outer surfaces coated with rubber, and have a relatively large density. If they are dropped to the floor during training, the floor may be damaged, and the user may also be injured due to improper force control.

[0004] Ideally, dumbbells and kettlebells should have a relatively stable center of gravity during use, such as when performing various push-ups, lifts, throws, jumps, and squats. Dumbbells and kettlebells made of iron as a whole or having iron outer surfaces coated with rubber have a stable center of gravity, which makes them relatively rigid to use. When performing some large-amplitude movements, the transition is relatively rigid, and it is also easy to cause a strain.

[0005] New dumbbells or kettlebells are filled with iron sand, yellow sand, or other particles in a main body made of elastic material. To some extent, such dumbbells or kettlebells do not cause injury during use, and do not damage the floor or feet. However, when such dumbbells or kettlebells are used, for example, when the filler enters the handle cavity, the center of gravity of the kettlebell will change greatly with the user's movements, resulting in poor center of gravity stability and poor continuity of the user's movements, which loses the fun of exercise. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a training filler with relative center of gravity stability.

[0007] The technical solution for achieving the object of the present application is a training filler, which comprises a body, a partition, and a filler comprising at least filler particles. The body is divided into a filling part and a closed space part by the partition. The filling part contains the filler, and the filling part containing the filler constitutes the load-bearing part of the training filler. The closed space part constitutes the part for gripping in the training filler. The material constituting the filling part is softer or more elastic than the material constituting the closed space part. The filling part and the closed space part are not in communication with each other, and the filler is limited in the filling part and cannot enter the closed space part.

[0008] As an option, the training filler is a dumbbell or a kettlebell. When the training filler is a dumbbell, the filler part filled with the filler is the weight part at both ends of the dumbbell, and the closed space part is the handle of the dumbbell. When the training filler is a kettlebell, the filler part filled with the filler is the pot belly of the kettlebell, and the closed space part is the handle of the kettlebell.

[0009] As an option, the material constituting the partition includes at least a material having the same properties as the material constituting the filler part and / or a material having the same properties as the material constituting the closed space part.

[0010] Further, the partition includes a layer of a material having the same properties as the main material constituting the filler part on the side close to the filler part.

[0011] Further, the partition includes a layer of a material having the same properties as the main material constituting the closed space part on the side close to the closed space part.

[0012] As an option, the tensile strength of the partition is 5-300mpa.

[0013] As an option, the tensile strength of the partition is 20-120mpa.

[0014] As an option, the thickness of the partition is 0.1-8mm.

[0015] As an option, the thickness of the partition is 0.3-4mm.

[0016] As an option, the filler occupies 75% to 110% of the volume of the filler part when the partition is not in a state of being squeezed tightly.

[0017] As an option, the filler occupies 85% to 95% of the volume of the filler part when the partition is not in a state of being squeezed tightly.

[0018] As an option, the filler particles include at least one of river sand, sea sand, yellow sand, quartz sand, mineral sand, iron sand, iron particles, iron powder, steel shot, steel ball, and plastic particles.

[0019] As an option, the particle size of the filler particles is 0.1-20mm.

[0020] The filler part includes a through-hole part and a sealing plug. The filler is filled into the filler part through the through-hole part, and the sealing plug cooperates with the through-hole part to form a closed cavity in the filler part.

[0021] As an option, the through-hole part is located at the bottom or side of the filler part.

[0022] As an option, the through-hole part extends into the filler part from the bottom or side of the filler part to form a finger sleeve. The through-hole part is formed of the material constituting the filler part, and the top end of the through-hole part is provided with a through-hole.

[0023] As an option, the through hole part is provided with a gas sleeve, the gas sleeve is a circular tube penetrating from top to bottom, the through hole part is heat fused with the gas sleeve, and the sealing plug cooperates with the through hole part through the gas sleeve to form a closed cavity in the filling part.

[0024] As an option, the gas sleeve cooperates with the sealing plug, and the sealing plug is connected with the gas sleeve through interference fit, heat fusion or using adhesive.

[0025] As an option, the sealing plug is made of rubber or plastic.

[0026] As an option, the material constituting the filling part at least includes one of plastic with elasticity, polyvinyl chloride, common rubber, thermoplastic rubber, polyurethane or synthetic glue.

[0027] As an option, the material constituting the closed space part at least includes one of plastic with elasticity, polypropylene, polyvinyl chloride, polyurethane or polyethylene.

[0028] The present application has the positive effect that the training filling body of the present application will not damage the floor or injure the trainer, and at the same time, with the movement of the trainer, the relative stability of the center of gravity can be maintained, neither the rigid movement of the trainer caused by the fixed center of gravity (such as the dumbbell and kettlebell made of iron) nor the large change of the center of gravity in training, the training filling body with relative stability of the center of gravity makes the training movement of the trainer smooth and coherent, enhances the interest of the trainer in movement, and is conducive to the persistence of training. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a perspective view of the first form of training filling body kettlebell.

[0030] Figure 2 It is a left view of Figure 1 .

[0031] Figure 3 It is an A-A enlarged sectional view of Figure 2 .

[0032] Figure 4 It is an enlarged view of B part in Figure 3 .

[0033] Figure 5 It is an enlarged view of C part in Figure 3 .

[0034] Figure 6 It is a perspective view of the second form of training filling body dumbbell.

[0035] Figure 7 It is an enlarged sectional view of the second form of training filling body dumbbell.

[0036] The marks in the above figures are as follows:

[0037] Training filler 1, body 2, filling part 3, closed space part 4, spacer 5, filler 6, filling particles 7, through hole part 8, sealing plug 9, air sleeve 10, spacer outer layer 1, spacer outer layer 2, spacer intermediate layer 3. DETAILED DESCRIPTION

[0038] The following describes some of the multiple possible embodiments of the present application, which are intended to provide a basic understanding of the present application and are not intended to identify key or decisive elements or limit the scope of protection. It is easy to understand that, according to the technical solution of the present application, one of ordinary skill in the art can propose other implementations that can be mutually replaced without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solution of the present application, and should not be considered as the whole or as a limitation or restriction of the technical solution of the present application.

[0039] (Example 1)

[0040] See Figures 1 to 5 The training filler 1 of the present embodiment is a kettlebell.

[0041] The training filler 1 of the present embodiment includes a body 2, a spacer 5, and a filler 6 including at least filling particles 7, the body 2 is divided by a spacer 5 into a filling part 3 and a closed space part 4 that are not in communication with each other, the filling part 3 is used to fill the filler 6, the closed space part 4 is not in communication with the filling part 3, preventing the filler 6 from entering the closed space part 4, but can be in communication with the outside, or can be a completely closed space, that is, neither the same as the filling part 3 nor in communication with the outside. In the present embodiment, the filling part 3 containing the filler 6 including at least filling particles 7 is the kettlebell handle, and the closed space part 4 is the kettlebell handle part, which constitutes the main part for gripping in the training filler. The purpose of the closed space part 4 not being in communication with the filling part 3 is to keep the center of gravity of the training filler 1 relatively stable. If they are in communication, the filler 6 may enter the closed space part 4 during training, at which time the center of gravity of the training filler 1 will change greatly, causing the training action of the trainer to be incoherent or even interrupted.

[0042] The material constituting the filling part 3 includes at least one of a plastic with elasticity, polyvinyl chloride, ordinary rubber, thermoplastic rubber, polyurethane, or synthetic rubber.

[0043] The material constituting the closed space part 4 includes at least one of a plastic with elasticity, polypropylene, polyvinyl chloride, polyurethane, or polyethylene.

[0044] Even if the filling part 3 and the sealed space part 4 are made of the same type of material, they will have different properties due to different specific components, but in general, the material constituting the filling part 3 is softer or more elastic than the material constituting the sealed space part 4. The filling part 3 and the sealed space part 4 can be formed simultaneously or separately by methods such as simultaneous blow molding, rotational molding, and injection molding. If they are formed separately, they can be integrated by methods such as heat melting, bonding, or assembly after the filling part 3 and the sealed space part 4 are formed separately.

[0045] The filling part 3 has a through-hole part 8 at the bottom or side, for example, the bottom or side of the kettle belly of the kettlebell, which can facilitate the filling of the filler 6, and if it is at the bottom, it can hide the position of the through-hole part, which is more beautiful. It is preferred to be arranged at the bottom. If the through-hole part is arranged at the top, for example, between the handle and the kettle belly of the kettlebell, it is more troublesome to fill. Figure 3 As shown in the embodiment, the through-hole part 8 is arranged at the bottom of the filling part 3.

[0046] The through-hole part 8 extends from the bottom or side of the filling part 3 to the filling cavity to form a finger sleeve, and the through-hole part 8 is formed of the material constituting the filling part 3. The top end of the through-hole part 8 is provided with a through-hole for filling the filler 6. Since the filling part 3 and the sealed space part 4 are not connected to each other, the filler 6 is restricted in the filling part 3 and cannot enter the sealed space part 4.

[0047] In one case, the sealing plug 9 directly closes the through-hole part 8 to prevent the filler 6 from leaking. The sealing plug 9 and the through-hole part 8 are in a close fitting relationship when the filling part 3 is made, which can effectively prevent the filler particles from leaking from the through-hole part. One way is to use different materials for the sealing plug 9 and the filling part 3, and the sealing plug 9 and the filling part 3 are not bonded when the filling part 3 is made. When the filler is filled, the sealing plug 9 is removed first, and then the sealing plug 9 is installed after the filling is completed, which can ensure better sealing effect.

[0048] The shape of the sealing plug 9 cooperates with the internal space of the through-hole part 8 to close the through-hole part 8. The sealing plug 9 is connected with the through-hole part 8 by interference fit, heat melting or using adhesive. In the case of interference fit, the sealing plug and the through-hole part 8 are in close fit, which can ensure that the filler 6 will not leak from the filling part 3 when the density of the filler 6 and the total mass of the filler 6 in the filling part 3 are not too large. When the material properties of the sealing plug 9 and the filling part 3 are relatively close, heat melting can be used to seal and combine them. When the material properties of the two are quite different, adhesive can be used, for example, glue, to bond the two together, which can effectively prevent the leakage of the filler 6.

[0049] Another method is shown in Figure 4As shown, the through-hole part 8 includes an air sleeve 10, which is a circular tube extending vertically. When the bulge, i.e. the filling part 3, is formed, the air sleeve 10 is fitted on the mold, and after the filling part 3 is formed, the air sleeve 10 is heat-fused to become part of the through-hole part 8. The sealing plug 9 cooperates with the through-hole part 8 through the air sleeve 10 to form a closed cavity in the filling part 3.

[0050] The sealing plug 9 cooperates with the internal space of the air sleeve 10 to close the through-hole part 8. The sealing plug 9 is connected to the air sleeve 10 by interference fit, heat fusion or adhesion. In the case of interference fit, the sealing plug 9 is tightly fitted with the air sleeve 10, which can ensure that the filler 6 does not leak from the filling part 3 when the density of the filler 6 and the total mass of the filler 6 in the filling part 3 are not too large. When the material properties of the sealing plug 9 and the filling part 3 are similar, heat fusion can be used to seal and combine them. When the material properties of the two are quite different, adhesion can be used, for example, using glue to bond them together, which can effectively prevent the leakage of the filler 6.

[0051] The sealing plug 9 is made of rubber or plastic. After the sealing plug 9 closes the through-hole part 8, the sealing plug 9 is completely inside the air sleeve 10, or after the sealing plug 9 closes the through-hole part, the sealing plug 9 is partially retained outside the air sleeve 10.

[0052] The filler 6, which at least includes the filler particles 7, is filled into the filling cavity through the through-hole part 8.

[0053] When the filling of the filler 6 in the filling part 3 is completed, the filler 6 occupies 75% to 110%, preferably 85% to 95% of the volume of the filling part 3 when the spacer 5 is not in a compressed and tight state. Because the spacer 5 has a certain elasticity, even if the filler 6 exceeds the volume of the filling part 3, causing the spacer 5 to be in a compressed and tight state, the center of gravity of the training filler can still change to a certain extent in use.

[0054] The meaning that the filling part 3 at least includes the filler particles 7 is that the filling part 3 can only have one kind of filler particles, or have multiple kinds of filler particles for counterweighting. In addition, besides the filler particles, other non-particle materials (such as liquid, etc.) can also be used as fillers. The filler particles 7 include at least one of river sand, sea sand, yellow sand, quartz sand, mineral sand, iron sand, iron particles, iron powder, steel shot, steel ball, and plastic particles. The particle size of the filler particles 7 ranges from 0.1 to 20 mm.

[0055] See Figure 5 The spacer 5 is in the shape of a sheet as a whole, which can be flat or uneven according to different manufacturing processes, and neither affects the use.

[0056] The material constituting the partition 5 includes at least the same material as the material constituting the filling portion 3 and / or the same material as the material constituting the closed space portion 4. Alternatively, the partition 5 includes a layer of the same material as the main material constituting the filling portion 3 on the side close to the filling portion 3, and / or a layer of the same material as the main material constituting the closed space portion 4 on the side close to the closed space portion 4.

[0057] In the present embodiment, the partition 5 includes a partition outer layer one 11, a partition outer layer two 12, and a partition intermediate layer 13, which are combined together by melting or bonding.

[0058] The partition outer layer one 11 close to the filling portion 3 is the same material as that constituting the filling portion 3. This arrangement can ensure that the partition 5 has a certain elasticity, so that the filling 6 will not cause the partition 5 to break when the filling 6 exceeds the normal volume of the filling portion 3. In addition, because the material constituting the filling portion 3 is relatively softer or more elastic, the main material of the partition outer layer one 11 is the same as the main material constituting the filling portion 3, which can also compress the filling 6 elastically, thereby ensuring the relative stability of the center of gravity.

[0059] The partition outer layer two 12 close to the closed space portion 4 is the same material as that constituting the closed space portion 4. This arrangement can ensure that the partition 5 is not easily broken at the connection between the partition 5 and the closed space portion 4 (or handle).

[0060] The partition outer layer one 11 of the partition 5 can be formed when the filling portion 3 is made, and the partition outer layer two 12 can be formed at the same time when the closed space portion 4 is made. In addition, the partition can include a single layer, or two, three, or more layers that are fused or bonded together, or two or more layers that are not connected together, which can be arranged according to actual needs.

[0061] The thickness of the partition 5 is 0.1-8 mm, preferably 0.1-4 mm. If the partition 5 is too thin, it is easy to break, causing the filling 6 such as the filling particles 7 to enter the closed space portion 4, affecting the relative stability of the center of gravity of the training filling body 1. If the partition 5 is too thick, it can lose elasticity, causing the center of gravity of the training filling body 1 to be too stable when the filling portion 3 is filled to a certain extent, making the training motion rigid. After repeated experiments by the inventors on various filling particles and partitions 5, it was found that when the thickness of the partition 5 is between 0.1-4 mm, the center of gravity of the training filling body 1 is relatively stable during training when most filling particles are used, and the use effect is better.

[0062] The tensile strength of the partition 5 is 5-300 MPa, preferably 20-120 MPa. If the tensile strength of the partition 5 is too low, the filling 6 moves in a large range in the filling part 3, and the center of gravity changes greatly during training, which is not conducive to the trainer's control of the training filling body 1. On the contrary, if the tensile strength is too high, the partition 5 will lose elasticity, the filling 6 will be compacted in the filling part 3, and the center of gravity of the training filling body 1 will be too stable to make the training motion rigid. After repeated tests by the inventors on the tensile strength of the partition 5, it was found that when the tensile strength of the partition 5 is between 5-300 MPa, preferably 5-120 MPa, the center of gravity of the training filling body 1 is relatively stable during training, and the use effect is better.

[0063] Due to the partition 5, the filling 6 is limited in the filling part 3 and cannot enter the sealed space part 4, so as to maintain the relative stability of the center of gravity of the training filling body during use.

[0064] (Example 2)

[0065] See Figures 6 to 7 The training filling body 1 of the present embodiment is a dumbbell.

[0066] The training filling body of the present embodiment includes a body 2, two partitions 5 and a filling 6. The body 2 is divided into two end filling parts 3 and a middle sealed space part 4 by the left and right partitions 5, and the sealed space part 4 is separated from the two end filling parts 3 by a partition 5. The sealed space part 4 is the handle of the dumbbell, and the filling part 3 containing the filling 6 including filling particles 7 is the two end weight blocks of the dumbbell. The structure of the filling part 3 is the same as that of the filling part 3 in Example 1.

[0067] Due to the partition 5, the filling 6 including the filling particles 7 is limited in the two end filling parts 3 and cannot enter the sealed space part 4, so as to maintain the relative stability of the center of gravity of the training filling body during use.

[0068] In the present embodiment, the through hole part 8 is arranged on the side surface of the filling part 3, and the sealing plug 9 cooperates with the through hole part 8 to form a closed cavity in the filling part 3. In addition, the arrangement, structure and material of each component in Example 2 are the same as those in Example 1.

[0069] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and practice of the present disclosure. The present application is intended to cover any variations, uses or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the art that are not disclosed by the present disclosure. The specification and examples are only considered as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0070] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the application should be limited only by the appended claims.

Claims

1. A training filling body (1), characterized in that: The training filler (1) comprises a body (2), a partition (5) and a filler (6) comprising at least filler particles (7); The body (2) is divided into a filling part (3) and a closed space part (4) by the partition (5); The filling part (3) contains the filler (6), the filling part (3) containing the filler (6) constitutes the load part of the training filler, and the closed space part (4) constitutes the part for gripping in the training filler (1); The material constituting the filling part (3) is softer or more elastic than the material constituting the closed space part (4); The filling part (3) and the closed space part (4) are not communicated with each other, and the filler (6) is limited in the filling part (3) and cannot enter the closed space part (4), Wherein, the training filler (1) is a kettlebell, the filling part (3) containing the filler (6) is the kettlebell belly, and the closed space part (4) is the handle of the kettlebell; and Wherein, the partition (5) has a certain elasticity; The filler (6) occupies 75% to 110% of the volume of the filling part (3) when the partition (5) is not squeezed and tight.

2. Training filling body (1) according to claim 1, characterized in that: The material constituting the partition (5) at least includes a material having the same properties as the material constituting the filling part (3) and / or a material having the same properties as the material constituting the closed space part (4).

3. The training filling body (1) according to claim 2, wherein The partition (5) includes a layer of material having the same properties as the main material constituting the filling part (3) on the side close to the filling part (3).

4. The training filler body of claim 2 wherein, The partition (5) includes a layer of material having the same properties as the main material constituting the closed space part (4) on the side close to the closed space part (4).

5. Training filling body (1) according to claim 2, characterized in that: The tensile strength of the partition (5) is 5-300mpa.

6. Training filling body (1) according to claim 5, characterized in that: The tensile strength of the partition (5) is preferably 20-120mpa.

7. Training filling body (1) according to claim 1, characterized in that: The thickness of the partition (5) is 0.1-8mm.

8. Training filling body (1) according to claim 7, characterized in that: The thickness of the partition (5) is preferably 0.3-4mm.

9. Training filling body (1) according to claim 1, characterized in that: The filler (6) occupies 85% to 95% of the volume of the filling part (3) when the partition (5) is not squeezed and tight.

10. Training filling body (1) according to claim 1, characterized in that: The filler particles (7) include at least one of river sand, sea sand, yellow sand, quartz sand, mineral sand, iron sand, iron particles, iron powder, steel shot, steel beads, and plastic particles.

11. Training filling body (1) according to claim 10, characterized in that: The particle size of the filler particles (7) ranges from 0.1 to 20mm.

12. Training filling body (1) according to claim 1, characterized in that: The filling part (3) includes a through hole part (8) and a sealing plug (9), the filler (6) is filled into the filling part (3) through the through hole part (8), and the sealing plug (9) cooperates with the through hole part (8) to form a closed cavity in the filling part (3).

13. Training filling body (1) according to claim 12, characterized in that: The through hole part (8) is located at the bottom or side of the filling part (3).

14. Training filling body (1) according to claim 12, characterized in that: The through hole part (8) extends into the filling part (3) from the bottom or side of the filling part (3) to form a finger sleeve shape, the through hole part (8) is formed of the material constituting the filling part (3), and a through hole is formed at the top end of the through hole part (8).

15. Training filling body (1) according to claim 12, characterized in that: The through hole part (8) is internally provided with an air sleeve (10), the air sleeve (10) is a circular tube shape penetrating from top to bottom, the through hole part (8) is heat fusion connected with the air sleeve (10), the sealing plug (9) is matched with the through hole part (8) through the air sleeve (10), so that the filling part (3) forms a closed cavity.

16. Training filling body (1) according to claim 15, characterized in that: The air sleeve (10) is matched with the sealing plug (9), the sealing plug (9) is connected with the air sleeve (10) by interference fit, heat fusion or using adhesive.

17. The training filling body (1) according to claim 12, characterized in that: The sealing plug (9) is made of rubber or plastic.

18. Training filling body (1) according to claim 1, characterized in that: The material constituting the filling part (3) at least includes one of elastic plastic, polyvinyl chloride, common rubber, thermoplastic rubber, polyurethane or synthetic glue.

19. Training filling body (1) according to claim 1, characterized in that: The material constituting the closed space part (4) at least includes one of elastic plastic, polypropylene, polyvinyl chloride, polyurethane or polyethylene.

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