Dumbbell piece and dumbbell thereof

Abstract

The utility model belongs to the technical field of fitness equipment, in particular to a dumbbell piece and a dumbbell thereof, which comprise a flexible main body, a through hole is arranged in the middle of the flexible main body, a filling channel is arranged on the side edge of the flexible main body, and the filling channel is communicated with an inner cavity of the flexible main body and the outside; the filling channel can be sealed by the plug to form a closed filling space; the filler can enter the filling space through the filling channel; the filling space is not filled with the filler, and the filler can move in the filling space; the inner cavity of the flexible body can be inflated through the filling channel, and the filling space is kept in an expanded state. The utility model provides a dumbbell piece which is safe to use and has elasticity and a dumbbell thereof.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically referring to a dumbbell plate and a dumbbell. Background Technology

[0002] With the continuous improvement of people's living standards, the desire for fitness and health is also growing stronger, requiring the use of various fitness equipment. Fitness equipment is often categorized by the number of training functions, into two main types: single-function and multi-functional. Dumbbells, as a type of fitness equipment, are widely used. Currently, most dumbbells on the market are made of pure metal, with different weight specifications to meet different training requirements. Some products also allow for weight changes by replacing different dumbbell plates, thus meeting the actual needs of trainees. With the evolution of dumbbell products, and considering the actual needs of users, some dumbbells are now designed with soft materials or have a plastic or rubber layer covering cast iron dumbbells. This changes the external softness to avoid injury to the body or surrounding equipment during exercise. Furthermore, the internal filling can be replaced as needed to adapt to the unique needs of male or female exercisers.

[0003] For example, Chinese patent CN202310187472.1 discloses a soft dumbbell, which includes a dumbbell body and a handle. The handle has a rigid inner core, and a grip is provided around the rigid inner core. Large-diameter joints are provided at both ends of the grip. The dumbbell body is a hollow airbag structure with an injection hole on its outer wall. An end plug is inlaid in the injection hole, and an air nozzle module is located inside the center of the end plug. A through hole is provided in the fixing groove, which is connected to the through hole through the air nozzle module. The rigid inner core is thermoplastically coated to fit the grip, and anti-slip protrusions prevent the two from slipping after the combination. The dumbbell body is fed internally through the end plug, and the injection hole is sealed after feeding, achieving solid support. Furthermore, tapered tie rods are provided on both sides of the rigid inner core, extending into the dumbbell body. This effectively improves the internal horizontal axial strength of the dumbbell body while ensuring the flexibility of the outer periphery, preventing the dumbbell body from sagging and collapsing at both ends. This product offers relatively flexible dumbbells, providing a better user experience. Even if the dumbbells accidentally slip and fall onto the user's feet, they won't cause significant injury, and it also reduces the risk of damage to the ground. However, this product also has some drawbacks: the weight is factory-set, and users cannot adjust the weight; furthermore, the sagging on both sides cannot be prevented, only reduced, resulting in a less aesthetically pleasing product. Summary of the Invention

[0004] The purpose of this invention is to provide a safe and flexible dumbbell plate and dumbbell thereof.

[0005] The purpose of this utility model is achieved as follows:

[0006] A dumbbell plate includes a flexible body with a through hole in the middle and an injection channel on the side of the flexible body, the injection channel connecting the inner cavity of the flexible body to the outside; a plug can seal the injection channel and form a closed filling space.

[0007] The filler can enter the filling space through the injection channel; the filler does not completely fill the filling space, and the filler can move within the filling space;

[0008] The flexible body cavity can be inflated through the injection channel, keeping the filling space in an expanded state.

[0009] Preferably, the infusion channel includes a positioning plug, the positioning plug having a channel for installing a plug in the middle, and the positioning plug being tightly connected to the flexible body to form an integral whole; the hardness of the positioning plug is greater than that of the flexible body.

[0010] Preferably, the flexible body is integrally formed with a skirt, which covers the outside of the positioning plug. The skirt has an opening or gap, allowing filler and gas to pass through the positioning plug and the skirt into the inner cavity of the flexible body.

[0011] Preferably, the plug is a flexible component, and the side of the plug is provided with an annular protrusion. The plug enters the injection channel and is in a sealed state. The annular protrusion deforms and fits tightly against the inner wall of the injection channel.

[0012] Preferably, a blind hole is provided on the inner side of the plug, which provides space for the plug to deform inward. The annular convex edge deforms and forces the blind hole to shrink or partially close. The diameter of the annular convex edge is larger than that of the injection channel. When the plug is pushed into the injection channel, the annular convex edge tilts in the direction of entry.

[0013] Preferably, the lower diameter of the annular protrusion is larger than the upper diameter of the annular protrusion.

[0014] Preferably, the flexible body is ring-shaped when inflated, and the outer surface of the flexible body is a continuous arc shape when inflated.

[0015] A dumbbell includes the aforementioned dumbbell plates and a dumbbell bar. The dumbbell bar has threaded sections at both ends, each threaded section can hold at least two dumbbell plates, and a stop block has an internal thread in the middle that mates with the threaded sections. The stop block is threadedly connected to the threaded sections and abuts against the rear of the dumbbell plates.

[0016] Preferably, in the inflated state, the inner diameter of the central through-hole of the dumbbell plate is larger than the maximum outer diameter of the threaded section; when the stop block is tightened, the dumbbell plate deforms laterally, the inner diameter of the central through-hole of the dumbbell plate decreases, and the dumbbell plate abuts against the outer surface of the threaded section. A stop plate is provided on the side of the threaded section of the dumbbell bar, and the dumbbell plate abuts against the stop plate.

[0017] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0018] 1. This utility model uses a flexible body as the main part of the dumbbell plate. Filler material is poured into the flexible body, and then air is inflated to form an elastic dumbbell plate. Preferably, the dumbbell plate is ring-shaped, allowing the user to either slip the plate onto a dumbbell bar or hold it for load training. Since the entire dumbbell plate is an inflatable flexible component, its safety is ensured. Even if the dumbbell plate falls on the user's body or feet from a height, it will not cause excessive injury. Users can choose one or more dumbbell plates for moderate training according to their needs, providing more training options.

[0019] 2. The injection channel of this utility model is composed of a tightly connected flexible main body skirt and a positioning plug. The skirt covers the outer edge of the positioning plug, and the tight connection ensures that there is no air leakage between the positioning plug and the flexible main body. The positioning plug is made of rigid material, and the rigid material positioning plug can be directly sealed by the flexible plug. The flexible plug deforms inside the positioning plug and seals the injection channel.

[0020] 3. The plug of this utility model has a blind hole on the inner side, which provides space for the plug to deform inward. The annular convex edge deforms and forces the blind hole to shrink or partially close. Through the blind hole, the plug can deform the interior to fit. Moreover, the annular convex edge will tilt in accordance with the process of pushing in the positioning plug. Due to the overall deformation of the plug and the tilted annular convex edge, the plug that has been sealed is not easy to be removed.

[0021] 4. The inner diameter of the through hole in the middle of the dumbbell plate of this utility model is larger than the outer diameter of the threaded section. Therefore, the user can easily put the dumbbell plate on the dumbbell bar. When the user tightens the stop block, the dumbbell plate deforms under the push of the stop block, and the inner diameter of the through hole in the middle of the dumbbell plate decreases, so that the dumbbell plate can be effectively placed on the dumbbell bar. The installed dumbbell plate does not wobble and the structure is stable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the dumbbell plate structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the dumbbell plate of this utility model;

[0024] Figure 3 yes Figure 2 A magnified structural diagram at point A;

[0025] Figure 4 This is a schematic diagram of the structure of the plug of this utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of the plug of this utility model;

[0027] Figure 6This is a schematic diagram of the dumbbell structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the internal structure of a dumbbell in the uncompressed state of the dumbbell plates according to this utility model.

[0029] Figure 8 yes Figure 7 A magnified structural diagram at point B;

[0030] Figure 9 This is a schematic diagram of the internal structure of a dumbbell with the dumbbell plates compressed, according to this utility model.

[0031] Figure 10 yes Figure 9 A magnified structural diagram at point C.

[0032] In the diagram: 1-Flexible body; 1a-Filling space; 11-Through hole; 12-Skirt; 121-Gap; 13-Positioning plug; 14-Injection channel; 19-Filling material; 2-Plug; 21-Annular flange; 22-Blind hole; 3-Dumbbell bar; 31-Baffle; 32-Threaded section; 4-Stop block; L-Gap between dumbbell bar and threaded section. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1-10 As shown:

[0034] A dumbbell plate includes a flexible body 1 with a through hole 11 in the center and an injection channel 14 on the side of the flexible body 1, connecting the inner cavity of the flexible body to the outside. A plug 2 seals the injection channel 14, forming a closed filling space 1a. Filler 19 enters the filling space 1a through the injection channel 14. The dumbbell plate should not be completely filled with filler, as this would negate its flexibility; excessive filler could cause the flexible body to explode and break during de-inflation. The filler can be common weighting materials such as sand, iron filings, rubber, or liquids. Manufacturers can fill the flexible body 1 with different weights of filler 19 according to actual requirements, ensuring the filling space is not completely full. The weight of a single dumbbell plate can be freely controlled within the range of 0.5-5 kg. The inner cavity of the flexible body 1 can be inflated through the injection channel 14, keeping the filling space in an expanded state. In the inflated state, the filler within the filling space can flow under gravity. Users can use the dumbbell plates individually or assemble them into dumbbells as described below. The specific exercise method is up to the user. The individual dumbbell plates are continuous, preferably ring-shaped, and the flexible body has a continuous arc shape when inflated, providing a good grip experience. The soft rubber material also provides a non-slip effect, ensuring a comfortable grip. Users can also thread the dumbbell plates onto elastic bands for weight training, with various specific exercise methods available.

[0035] The injection channel includes a positioning plug 13, which has a channel for installing a plug in its center. The positioning plug 13 is tightly connected to the flexible body 1 to form an integral unit. The hardness of the positioning plug 13 is greater than that of the flexible body 1. The positioning plug 13 is rigid under normal conditions, so the flexible plug 2 can seal the channel in the center of the positioning plug. Preferably, the positioning plug 13 and the flexible body 1 are heat-fused together during the manufacturing process. The flexible body is integrally formed with a skirt 12, which covers the outside of the positioning plug 13. The skirt 12 has an opening or gap 121, allowing filler and gas to pass through the positioning plug and the skirt into the inner cavity of the flexible body.

[0036] The plug 2 is a flexible component. The side of the plug 2 is provided with an annular protrusion 21. The plug 2 enters the injection channel and is in a sealed state. The annular protrusion 21 deforms and fits tightly on the inner wall of the injection channel 14.

[0037] The plug 2 has a blind hole 22 on its inner side, which provides space for the plug to deform inward. The annular convex edge 21 deforms and forces the inner diameter of the blind hole 22 to decrease or partially close. Figure 3As shown, the diameter of the annular convex edge is larger than that of the injection channel. When the plug 2 is pushed into the injection channel 14, the annular convex edge 21 tilts in the direction of entry. The tilted annular convex edge has a better sealing effect and also prevents the plug from falling out of the injection channel.

[0038] The lower diameter of the annular flange is larger than the upper diameter of the annular flange. The purpose of this structure is that when the plug is inserted into the injection channel, the entire plug enters the injection channel, and the upper diameter of the annular flange is smaller. The blind hole at this position will not be completely closed. Workers can insert tools into the blind hole to pry out the plug and replace it.

[0039] A dumbbell includes dumbbell plates and a dumbbell bar 3. Both ends of the dumbbell bar 3 are provided with threaded sections 32, each threaded section 32 capable of holding at least two dumbbell plates. A stop block 4 has an internal thread in its center that mates with the threaded sections 32. The stop block 4 is threadedly connected to the threaded sections 32 and abuts against the rear of the dumbbell plates. Users can place an appropriate number of dumbbell plates on the dumbbell bar according to their actual needs to achieve the desired training effect.

[0040] When inflated, the inner diameter of the central through-hole of the dumbbell plate is larger than the maximum outer diameter of the threaded section, such as... Figure 8 As shown, when the dumbbell plates are not compressed, the gap between the dumbbell plates is L. By setting this gap, the user can easily install and remove the dumbbell plates. A baffle 31 is provided on the side of the threaded section of the dumbbell bar, and the dumbbell plates abut against the baffle 31. When a single dumbbell plate is mounted on a threaded rod and the stop block is tightened, the dumbbell plate is pressed between the stop block and the stop plate, and the dumbbell plate deforms. The inner diameter of the central through-hole of the dumbbell plate decreases, and the dumbbell plate abuts against the outer surface of the threaded section. Therefore, the flexible dumbbell plate is restricted on both sides and at the position of the through-hole, and the dumbbell plate is stably fixed and will not wobble. If two dumbbell plates are mounted on the threaded rod and the stop block is tightened, the two dumbbell plates are pressed between the stop block and the stop plate. The dumbbell plates squeeze against each other, and at the same time, the dumbbell plates deform, the inner diameter of the central through-hole of the dumbbell plate decreases, and the dumbbell plate abuts against the outer surface of the threaded section. The two sides and at the position of the through-hole of both dumbbell plates are restricted, and the dumbbell plates are stably fixed and will not wobble. Moreover, the dumbbell plates themselves are made of flexible material and have high frictional resistance, making the dumbbell structure stable when the stop block is tightened. Preferably, the baffle 31 can be integrally molded onto the dumbbell bar, or it can be a separate component, depending on the manufacturer's choice. The flexible body is preferably made of PVC, but other soft materials are also acceptable.

[0041] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A dumbbell plate characterized by: The flexible body (1) has a through hole in the middle and a pouring channel (14) on the side, which connects the inner cavity of the flexible body with the outside world; the plug seals the pouring channel and forms a closed filling space (1a); The filling material (19) can enter the filling space (1a) through the pouring channel (14); the filling material (19) does not fill the filling space, and the filling material can move in the filling space; The inner cavity of the flexible body (1) can be inflated, and the filling space can be kept in an inflated state; The pouring channel (14) includes a positioning plug (13) having a channel in the middle for installing the plug (2), and the positioning plug (13) is tightly connected with the flexible body (1) to form an integral whole; the hardness of the positioning plug is greater than that of the flexible body (1); The flexible body (1) is integrally formed with a skirt (12) covering the outside of the positioning plug (13), and the skirt (12) has an opening or a gap (121), through which the filling material (19) and the gas can enter the inner cavity of the flexible body (1) through the positioning plug (13) and the skirt (12).

2. The dumbbell plate of claim 1, wherein: The plug (2) is a flexible member, and the side of the plug (2) is provided with an annular protrusion (21), the plug (2) enters the pouring channel (14) and is in a sealed state, the annular protrusion (21) deforms and tightly fits on the inner wall of the pouring channel (14).

3. The dumbbell plate of claim 2, wherein: The inside of the plug (2) is provided with a blind hole (22), which gives the plug a space for inward deformation, and the annular protrusion deforms and forces the inner diameter of the blind hole to decrease or partially close; the diameter of the annular protrusion is greater than that of the pouring channel, the plug is pushed into the pouring channel, and the annular protrusion tilts along the entering direction.

4. The dumbbell plate of claim 3, wherein: The lower end of the annular protrusion has a diameter greater than that of the upper end of the annular protrusion.

5. The dumbbell piece of claim 1 or 2 or 3 or 4, wherein: The flexible body is annular in the inflated state, and the outer surface of the flexible body is a continuous arc in the inflated state.

6. A dumbbell characterized by: The dumbbell piece further comprises a dumbbell rod (3), the two ends of the dumbbell rod (3) are provided with threaded segments (32), each threaded segment (32) can accommodate at least two dumbbell pieces, and the middle of the stop block (4) is provided with an internal thread matched with the threaded segment, the stop block (4) is threadedly connected to the threaded segment and abuts against the rear part of the dumbbell piece.

7. The dumbbell of claim 6, wherein: In the inflated state, the inner diameter of the through hole in the middle of the dumbbell piece is greater than the maximum outer diameter of the threaded segment; the stop block (4) is screwed, the dumbbell piece deforms laterally, the inner diameter of the through hole in the middle of the dumbbell piece decreases, and the dumbbell piece abuts against the outer surface of the threaded segment.

8. The dumbbell of claim 7, wherein: The dumbbell rod is provided with a stop piece (31) on the side of the threaded segment, and the dumbbell piece abuts against the stop piece (31).

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