Sporting goods for muscle

Abstract

The present invention provides a muscle training device comprising: a weight having a wearing hole formed in the center so that a hand can pass through it and be worn on the wrist, wherein the wearing hole has an inner surface formed rounded so as to contact the wrist; and a handle coupled to the weight, formed in a ring shape, and gripped, wherein the weight has one or more screw holes formed therein and an auxiliary weight can be fastened to the screw holes to adjust the weight of the weight, and has an outer surface formed rounded so as to be formed, but the fastening portion to which the auxiliary weight is fastened is formed flat, and the auxiliary weight includes a weight plate that contacts the fastening portion and a fastening projection that is fastened to the screw hole by protruding from one side of the weight plate and having screw threads formed thereon.

Description

Technology Field

[0001] The present invention relates to a muscle training device, and more specifically, to a muscle training device that protects the wrist joint by keeping the weight of the weight close to the center of the body during strength training and can maximize the effect of strength training without using unnecessary muscles. Background Technology

[0003] Generally, strength training refers to exercises that apply a constant load (weight) to the muscles. Since muscles do not require oxygen consumption to generate force, it is classified as anaerobic exercise. For instance, the force required to lift or push objects is based on muscle strength; while smaller muscles produce weaker force, muscle strength is enhanced as the load (weight) is gradually increased. Strength training increases muscle size and expands motor units so that multiple muscle fibers can be recruited simultaneously. Furthermore, it not only increases muscle strength but also develops muscular endurance, which allows muscles to exert repetitive force for extended periods without fatigue, as seen in exercises like push-ups or long-distance running. While the term "strength training" usually brings to mind weight training with heavy barbells, exercises using light dumbbells, kettlebells, or resistance bands, as well as bodyweight resistance exercises, also fall under the category of strength training.

[0004] In relation to this, prior art disclosed in Patent Document 1 is a kettlebell comprising a body having a gripping portion formed on the upper surface and a hollow receiving portion formed inside, a filling groove formed on the upper outer surface and a stopper that is fastened to the filling groove, and a cushioning cover that surrounds the outer surface of the body and has a cushioning portion integrally formed on the lower surface.

[0005] However, the aforementioned conventional technology has problems such as the weight being located outside the hand and moving away from the center of the body when a user performs strength exercises, such as sitting down, standing up, swinging, or lifting while holding a heavy kettlebell with a gripping part, making it difficult for beginners to maintain a basic posture and difficult to control the kettlebell in a fixed manner, causing instability due to shaking or trembling during up-and-down movements, using unnecessary muscles other than the target exercise area to induce cheating, and potentially putting strain on the wrist joint. The problem to be solved

[0007] The present invention was devised to solve all the aforementioned problems, and aims to provide a muscle training device that allows for excellent maintenance of the basic posture by keeping the weight close to the center of the body during strength training, easy control of the weight, stable isolation exercise without shaking during up-and-down movement, maximizes muscle stimulation of the target exercise area, enables focused exercise and protects the wrist joint by minimizing the involvement of unnecessary muscles and wrist joints, allows for both dumbbell and kettlebell exercises, and enables safe exercise by preventing slipping through the ability to grip with the hand in close contact with the handle. means of solving the problem

[0009] The present invention provides a muscle training device comprising: a weight having a wearing hole formed in the center so that a hand can pass through it and be worn on the wrist, wherein the wearing hole has an inner surface formed rounded so as to contact the wrist; and a handle coupled to the weight, formed in a ring shape, and gripped, wherein the weight has one or more screw holes formed therein and an auxiliary weight can be fastened to the screw holes to adjust the weight of the weight, and has an outer surface formed rounded so as to be formed, but the fastening portion to which the auxiliary weight is fastened is formed flat, and the auxiliary weight includes a weight plate that contacts the fastening portion and a fastening projection that is fastened to the screw hole by protruding from one side of the weight plate and having screw threads formed thereon. Effects of the invention

[0011] According to the present invention, when performing strength training, the weight of the weight is positioned close to the center of the body, thereby ensuring excellent maintenance of the basic posture and easy control of the weight. It also enables stable isolation exercises without shaking during up-and-down movements, maximizes muscle stimulation of the target area, minimizes the involvement of unnecessary muscles and wrist joints to enable focused exercise and protect the wrist joint, allows for both dumbbell and kettlebell exercises, and enables safe exercise by preventing slippage as the hand can grip the handle closely. Brief explanation of the drawing

[0013] FIG. 1a is a perspective view of a muscle training device according to the prior art. FIG. 1b is a perspective view of a muscle training device according to an embodiment of the present invention. FIG. 2 is a perspective view of a muscle training device according to another embodiment of the present invention. FIGS. 3a to 3c are side, top, and bottom views of a muscle training device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a muscle training device according to one embodiment of the present invention. FIG. 5 is a perspective view illustrating the configuration of an auxiliary weight according to an embodiment of the present invention. FIG. 6 is a perspective view illustrating a muscle training device having a plurality of handles according to an embodiment of the present invention. Specific details for implementing the invention

[0014] Hereinafter, with reference to the drawings, specific details for implementing the muscle training device according to the present invention will be described in detail, focusing on embodiments.

[0015] The muscle training device (1) according to the present invention can protect the wrist joint by keeping the weight of the weight close to the center of the body during strength training and can maximize the effect of strength training without using unnecessary muscles, and is formed by including a weight (100) and a handle (200), and may further include an auxiliary weight (300).

[0016] Referring to FIG. 1 and FIG. 3a to FIG. 3c, the weight (100) is made of a heavy material such as metal, and a wearing hole (110) is formed through the center so that it can be worn on the wrist by passing the user's hand through it, and the inner surface of the wearing hole (110) is formed round so that it can make soft contact with the wrist.

[0017] Referring to FIG. 4, the weight (100) is formed with a rounded outer surface, and a fastening part (120) is formed flatly at one or several places on a part of the side so that an auxiliary weight (300) can be fastened, and for this purpose, a screw hole (130) may be formed in the fastening part (120).

[0018] The handle (200) is made of synthetic resin and has the weight (100) attached to both upper sides and is formed in a ring shape. During muscle strength exercise, the user can either directly grip the handle (200) or, as shown in FIG. 7a, grip the handle (200) while wearing the weight (100) on the wrist by passing the hand through the wearing hole (110).

[0019] At this time, it is preferable that the handle (200) be configured to be adjustable in position in the up-down or left-right directions for ease of use.

[0020] In addition, referring to FIG. 6, the handle (200) is formed in multiple numbers on the weight (100) so that the gripping force can be increased or the handle can be used by gripping selectively.

[0021] In addition, the handle (200) may have a non-slip cover made of an anti-slip material formed on its outer surface.

[0022] The above non-slip cover (200) may comprise, in weight percent, 30 to 50% polyphenylene sulfide resin, 15 to 25% SBR, 10 to 20% polyurethane resin, 10 to 20% polymethyl methacrylate, 5 to 10% 2-mercaptoadenine, 1 to 5% polyvinylpyrrolidone, 1 to 3% 2-ethylphenoxymethacrylate, 0.5 to 2% 1,4-phenylenebisoxazolin, 0.5 to 1.5% 1,4-butanediol diacrylate, and 0.5 to 1.5% tetraethylene glycol dimethacrylate.

[0023] The above polyphenylene sulfide resin is a semicrystalline thermoplastic resin produced by the reaction of p-dichlorobenzene and sodium sulfide, has excellent heat resistance, chemical resistance and weather resistance, excellent mechanical strength, and is added in an amount of 30 to 50 weight%.

[0024] The above SBR is a styrene butadiene synthetic rubber that has excellent strength and wear resistance, has elasticity, and can provide frictional force to the contact surface, so it is added in an amount of 15 to 25 weight%.

[0025] The above polyurethane resin is added in an amount of 10 to 20 weight%, as it provides strength that can maintain elasticity and firmness to prevent cracking, exhibits a sticky nature to increase adhesion, has excellent stain resistance, and, in particular, when added together with polyphenylene sulfide resin and SBR, increases physical properties such as elasticity, viscosity, toughness, and weather resistance, thereby greatly improving the modification effect.

[0026] The above polymethyl methacrylate increases inter-particle bonding strength with excellent viscosity and adhesive strength, and is added in an amount of 10 to 20 weight%.

[0027] The above 2-mercaptoadenine is added in an amount of 5 to 10 weight% and has needle-shaped microcrystals, forming a long-term stable and dense film to improve water tightness, suppress cracking, contribute to stable strength enhancement, and prevent oxidation caused by exposure to air and light.

[0028] Polyvinylpyrrolidone is a polymer of N-vinyl-2-pyrrolidone, which acts as a binder, and if it exceeds 5 weight%, dispersibility and flowability may be reduced.

[0029] 2-ethylphenoxymethacrylate is an aromatic methacrylate with excellent scratch resistance, which increases durability against repeated friction.

[0030] 1,4-phenylenebisoxazoline is an amine-based additive added to increase heat resistance and durability so that it is not damaged in high-temperature outdoor environments, and it is preferable to include it in an amount of 0.5 to 2 weight percent.

[0031] 1,4-butanediol diacrylate and tetraethylene glycol dimethacrylate are each included in an amount of 0.5 to 1.5 weight% as crosslinking agents, which can strengthen mechanical properties by interconnecting molecular sieves to form a polymer and increasing the crosslinking density.

[0032] Referring to FIG. 2, the auxiliary weight (300) is fastened to a screw hole (130) formed in the fastening part (120) of the weight (100) so that the weight of the weight (100) can be adjusted as needed.

[0033] To this end, referring to FIG. 5, the auxiliary weight (300) comprises a weight plate (310) that contacts the fastening part (120) and a fastening projection (320) that protrudes from one side of the weight plate (310) and is fastened to a screw hole (130) by forming a screw thread.

[0034] Referring to FIGS. 7b to 7d, when using a weight (100) worn on the user's wrist during strength training, the user can perform both dumbbell and kettlebell exercises by gripping the handle (200). The weight of the weight is positioned on the wrist, so the weight does not move further away from the center of the body compared to the conventional method, but remains closer.

[0035] In addition, as shown in Fig. 7e, you can perform exercises such as push-ups by holding only the handle (200) without passing your hand through the wearing hole (110) of the weight (100).

[0036] Therefore, the basic posture is well maintained during strength training, and even beginners can easily control the weight of the weight. There is no shaking during up-and-down movements using the weight, and isolation exercises can be performed stably. Muscle stimulation of the target area is maximized, and greater stimulation can be felt with fewer repetitions compared to before. It is possible to perform intensive exercises and protect the wrist joint by minimizing the involvement of unnecessary muscles and wrist joints. It is also possible to perform a variety of dumbbell and kettlebell exercises, and safe exercise is possible as the hands can be held close to the handles to prevent slipping.

[0037] The above embodiments in the present invention are merely examples, and the present invention is not limited thereto. Anything having a configuration substantially identical to the technical concept described in the claims of the present invention and achieving the same functional effect is included within the technical scope of the present invention. Explanation of the symbols

[0039] 1. Muscle training equipment 100. Weight 110. Wearing hole 120. Connecting part 130. Screw hole 200. Handle 300. Auxiliary weight 310. Weight plate 320. Fastening projection

Claims

Claim 1 A muscle training device comprising: a weight having a wearing hole formed in the center so that a hand can pass through it and be worn on the wrist, wherein the wearing hole has an inner surface formed rounded so as to contact the wrist; and a handle coupled to the weight, formed in a ring shape, and gripped, wherein the weight has one or more screw holes formed therein and an auxiliary weight can be fastened to the screw holes to adjust the weight of the weight, and has an outer surface formed rounded, but the fastening portion to which the auxiliary weight is fastened is formed flat, and the auxiliary weight includes a weight plate that contacts the fastening portion and a fastening projection that protrudes from one side of the weight plate and has screw threads formed thereon to be fastened to the screw holes. Claim 2 A muscle training device according to claim 1, wherein the handle is adjustable in position, and the handle has a non-slip cover made of an anti-slip material formed on its outer surface, and the non-slip cover comprises, in weight percent, 30 to 50% polyphenylene sulfide resin, 15 to 25% SBR, 10 to 20% polyurethane resin, 10 to 20% polymethyl methacrylate, 5 to 10% 2-mercaptoadenine, 1 to 5% polyvinylpyrrolidone, 1 to 3% 2-ethylphenoxymethacrylate, 0.5 to 2% 1,4-phenylenebisoxazolin, 0.5 to 1.5% 1,4-butanediol diacrylate, and 0.5 to 1.5% tetraethylene glycol dimethacrylate.

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