An adjustable arm strength bar

Abstract

The utility model discloses an adjustable arm force rod belongs to fitness equipment field, including elastic part, hand holds the pole, compression fastener and sliding block. The cavity is equipped in hand holds the pole inside, and the sliding block of elastic part both ends can slide in the cavity, the compression fastener of cavity opening place cooperates with the buckle position, and the position after locking adjustment. When adjusting, open the compression fastener, and the exposed length can be changed by pushing and pulling elastic part, and the shorter exposed length is stronger, and the longer exposed length is weaker, and the strength and holding demand of adaptation different crowd, and simultaneously be equipped with elastic convex anti -disengagement, prevent the broken sheath, safety rope etc. Structure, ensure the safe use. This arm force rod simple structure, convenient operation, low cost can replace many fixed specifications arm force rod, reduce the fitness cost, and adapt to family, outdoor etc.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically relating to a device with adjustable length and intensity. Background Technology

[0002] In the field of fitness equipment, arm strength bars are commonly used devices for training upper body strength and are widely used in home fitness, outdoor exercise, and other scenarios. However, existing arm strength bars generally suffer from the shortcomings of "limited functionality and poor adaptability," failing to meet the needs of different users.

[0003] For example, the utility model disclosed in Chinese Patent Publication No. CN 213159215 U, entitled "A Multifunctional Arm Strength Bar", has a fixed elastic body length and strength, with one arm strength bar corresponding to only a single strength specification. For children or beginners with weak strength, the fixed strength may be too great, making it unusable; for fitness enthusiasts with strong strength, the fixed strength is difficult to achieve the desired training effect. At the same time, people of different heights have different requirements for the grip spacing of the arm strength bar, and the fixed length will also affect the comfort and safety of the exercise.

[0004] This "one bar, one specification" design not only limits the range of people who can use the arm strength bar, but also forces users to buy multiple arm strength bars of different specifications, increasing fitness costs. Therefore, designing an adjustable arm strength bar that can flexibly adjust its length and intensity to suit different people and different exercise scenarios has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing arm strength bars, which have fixed length and strength and poor adaptability, and to provide an adjustable arm strength bar. Through the sliding cooperation between the elastic element and the hand grip, the length and strength can be flexibly adjusted to meet the needs of different groups of people and reduce fitness costs.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: an adjustable arm lever, including an elastic element, with a hand grip connected to both ends of the elastic element. The hand grip has a cavity inside, with the opening of the cavity located at one end of the inner side of the hand grip. The opening of the cavity is provided with a clamping fastener for clamping the elastic element and a fastener adapted to the clamping fastener. The elastic element has sliders at both ends, which are installed in the cavity and can slide along the length of the cavity. The shape of the slider is adapted to the shape of the inner wall of the cavity to prevent deviation during sliding.

[0007] Furthermore, the connection methods of the clamping fastener include the following two: The clamping fastener is connected to the handle bar via a bend-resistant thin sheet. The clamping fastener, the thin sheet, and the handle bar are integrally formed (preferably made of PP plastic to ensure bending toughness). The clamping fastener is hinged to the handle via a hinge or pivot, and can be rotated around the hinge point to open and close.

[0008] Furthermore, the slider is provided with an elastic protrusion, and the outer side of the cavity opening of the grip rod is provided with a blocking part; when the slider slides to the cavity opening, the elastic protrusion and the blocking part engage with each other to prevent the slider from sliding out of the cavity as a whole and to prevent the elastic element from detaching from the grip rod. The elastic protrusion and the slider are integrally formed (preferably made of TPR elastic material to ensure engagement toughness).

[0009] Furthermore, the connection between the slider and the elastic element includes the following two methods: Split design: The slider is provided with a socket, and the end of the elastic element is inserted into the socket and fixed by interference fit; Integrated molding design: The slider and elastic element are fixedly connected by injection molding or welding process to ensure connection strength.

[0010] Furthermore, the outer wall of the grip bar is provided with an anti-slip textured structure (such as striped patterns or dotted protrusions) to increase the grip friction; the grip bar is also connected to a safety rope, which can be put on the wrist during use to prevent the arm strength bar from falling off and injuring people.

[0011] Furthermore, the elastic element is made of glass fiber or spring steel (to ensure elasticity and strength), and its shape can be set as a flat strip, a round strip or a polygonal strip; the elastic element is covered with a break-proof sleeve, which can be a silicone sleeve, a heat shrink sleeve or a foam sleeve, to prevent fragments from flying when the elastic element breaks.

[0012] Furthermore, the surface of the elastic element is provided with graduations (evenly distributed along the length direction), which makes it easy for users to observe the length adjustment at both ends, ensure left-right symmetry, and improve exercise balance.

[0013] The advantages of this utility model compared with the prior art are: 1. Dual adjustment of length and strength, wide adaptability: The exposed length of the elastic element can be flexibly adjusted by sliding the slider in the hand grip cavity. The shorter the exposed length, the greater the deformation resistance of the elastic element and the stronger the arm strength bar. The longer the exposed length, the weaker the strength. It can adapt to the strength needs of different groups of people such as children, adults and fitness enthusiasts, while meeting the grip spacing needs of people of different heights.

[0014] 2. Simple structure and easy operation: The length can be adjusted simply by opening the clamping fastener, and then the clamping fastener can be tightened to fix it. No additional tools are required, and the operation steps are simple. The cooperation between the elastic protrusion and the blocking part can also prevent the parts from falling off during adjustment, thus improving the safety of operation.

[0015] 3. Comprehensive safety protection: The anti-breakage sleeve avoids the risk of elastic component breakage, the safety rope prevents it from falling off during use, and the anti-slip textured structure enhances grip stability. Triple protection ensures safe use.

[0016] 4. Low cost and high durability: The core components are made of conventional materials (plastic, fiberglass, spring steel), resulting in low procurement and manufacturing costs; the one-piece molded clamping fasteners and slider structure reduce splicing gaps, improve overall durability, and extend service life. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention, but do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall appearance structure of this utility model.

[0018] Figure 2 This is an exploded structural diagram of one end of the present invention.

[0019] Figure 3 This is a schematic diagram of the hand grip (with the fastener in the open state) in this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of a cross-section of the hand grip section in this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of another cross-section of the hand grip in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1-Elastic element; 11-Scale; 2-Hand grip; 21-Cavity; 22-Snap fastener; 23-Blocking part; 24-Anti-slip concave-convex structure; 3-Pressure fastener; 31-Thin sheet part; 32-Snap claw; 33-Pressure part; 4-Slider; 41-Elastic protrusion; 42-Insertion hole; 5-Safety rope. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0024] like Figures 1 to 5As shown, the core of the adjustable arm lever of this utility model consists of "elastic element (1) + sliding hand grip (2) + locking mechanism (pressing fastener 3 + buckle 22)": the sliders (4) at both ends of the elastic element can slide in the hand grip cavity (21) to realize length adjustment; the pressing fastener (3) cooperates with the buckle (22) to lock the adjusted position; at the same time, through the elastic protrusion (41), anti-breakage protective sleeve (not shown in the figure), safety rope (5) and other structures, the convenience of adjustment and the safety of use are ensured.

[0025] Example 1: One-piece molded clamping fastener + split slider structure.

[0026] 1. Component fabrication and assembly: Elastic component 1: Made of glass fiber (select the specification that matches the elastic strength), and the shape is a flat strip; the surface is printed with evenly distributed scale 11 along the length direction for easy observation and length adjustment; the elastic component 1 is covered with an anti-breakage sleeve (not shown in the figure), made of silicone material to ensure the elastic protection effect, and the sleeve has reserved space for the installation of sliders 4 at both ends.

[0027] Handgrip 2: Made of impact-resistant and anti-aging plastic through one-piece injection molding, with an internal cavity 21 that matches the shape of slider 4. The cross-sectional shape of cavity 21 is consistent with that of slider to ensure smooth sliding without deviation. The opening of cavity 21 is provided with a buckle 22 that matches the clamping fastener 3. An integrally formed blocking part 23 is provided on the outside of the opening, with an elastic protrusion 41 that matches the shape to prevent slider from sliding out. The outer wall of handgrip 2 is integrally formed with an anti-slip concave-convex structure 24, which can be set as striped texture or dotted protrusions to enhance the grip friction. The end of handgrip 2 has a reserved connection structure for fixing safety rope 5. The safety rope is made of wear-resistant and tensile-resistant rope material.

[0028] The clamping fastener 3 is integrally molded from the same plastic material as the handle bar 2. The two are connected by a bend-resistant thin sheet 31. The thickness of the thin sheet 31 needs to meet the requirement that it is not easy to break after repeated bending. The clamping fastener 3 has a pressing part 33 on the inside and a buckle claw 32 that matches the buckle position 22 to ensure that the pressing part 33 can tightly press the elastic element 1 after fastening to prevent loosening.

[0029] Slider 4: Made of a material with elasticity and toughness, injection molded to fit the handle cavity 21. One side of slider 4 has an integrally formed elastic protrusion 41, the height of which matches the blocking part 23 to ensure effective engagement. The contact area between the elastic protrusion 41 and the cavity 21 is rounded to allow for smooth, unimpeded movement within the cavity 21. A central insertion hole 42 is provided, its diameter matching the end of the elastic element 1. The end of the elastic element 1 is inserted into the insertion hole 42 of slider 4, and fixed by an interference fit, ensuring the connection strength meets the tensile force requirements during use.

[0030] 2. Workflow and Usage Method: Unlocking and Adjustment: Before use, use your fingers to press and tighten the buckle 3, causing it to rotate around the thin plate 31 and disengage from the buckle 22 of the hand grip bar 2. At this time, the elastic element 1 is in a sliding state. According to the user's strength requirements and height, hold the hand grip bar 2 on both sides with both hands and push it towards the middle or pull it outward. By sliding the slider 4 in the cavity 21, adjust the exposed length of the elastic element 1. When the exposed length is shortened, the arm strength bar is stronger; when the exposed length is increased, the strength is weakened. During the adjustment process, refer to the scale 11 on the elastic element 1 to ensure that the adjustment lengths at both ends are consistent to avoid uneven force during exercise.

[0031] Locking method: After adjusting to the target length, press down on the buckle 3 to engage with the buckle 22. The inner side of the buckle 3 is tightly pressed against the surface of the elastic element 1, and the position of the elastic element 1 is locked by friction to prevent slippage. When using, put the safety rope 5 on your wrist, hold the anti-slip concave-convex structure 24 of the hand grip bar 2 with both hands, and exercise as usual. The anti-slip structure can prevent your hands from slipping, and the safety rope can prevent the arm strength bar from accidentally falling off.

[0032] Adjustment restriction: When the slider 4 slides to the opening of the cavity 21, the elastic protrusion 41 on the slider 4 engages with the blocking part 23 of the hand grip 2, preventing the slider 4 from sliding outward and avoiding the elastic element 1 from disengaging from the hand grip 2, thus ensuring the safety of the adjustment process.

[0033] Example 2: Hinged clamping fastener + one-piece molded slider structure.

[0034] 1. Component preparation and assembly (only the differences from Example 1 are explained): The clamping fastener 3 is made of metal or high-strength plastic and is hinged to the hand grip 2 via a hinge. It can rotate and open around the hinge axis. The clamping fastener 3 is provided with a locking buckle structure that is compatible with the buckle position 22 of the hand grip 2. After being fastened, it can stably clamp the elastic element 1.

[0035] Slider 4 and elastic element 1: They are connected by an integral molding process. For example, the end of elastic element 1 is welded to slider 4 (metal elastic element) or integrally injection molded (non-metal elastic element) to ensure that there are no splicing gaps between the two, and the connection strength is higher, which is suitable for application scenarios with large force requirements.

[0036] 2. Workflow and Usage Method: During adjustment, flip the fastener 3 upward around the hinge axis to release the lock on the elastic element 1. The subsequent length adjustment logic is the same as in Embodiment 1. During locking, flip the fastener 3 downward to make the buckle structure cooperate with the buckle position 22 to complete the fixation.

[0037] Since the slider 4 and the elastic element 1 are integrally formed without any plug-in or pull-out gaps, they are less likely to loosen or fall off in high-intensity use scenarios (such as vigorous exercise), resulting in a longer service life.

[0038] In both embodiments of this utility model, the material (glass fiber or spring steel) and shape (flat strip, round strip, etc.) of the elastic element 1, the material of the grip bar 2, and the connection method of the clamping fastener 3 can be flexibly adjusted according to actual usage needs (such as target audience and usage scenario): for example, for children, a less elastic elastic element and a lightweight grip bar can be selected; for professional fitness enthusiasts, a high-strength elastic element and an integrated slider structure can be selected. As long as the core concept of "slider sliding to adjust length + clamping fastener locking position" is adopted, it falls within the protection scope of this utility model.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable arm lever, comprising an elastic element (1), characterized in that: The elastic element (1) is connected to a hand grip (2) at both ends. The hand grip (2) has a cavity (21) inside. The opening of the cavity (21) is provided with a clamping fastener (3) and a buckle (22) adapted to the clamping fastener (3). The elastic element (1) has a slider (4) at both ends. The slider (4) is installed in the cavity (21) and can slide along the length of the cavity (21).

2. The adjustable arm lever according to claim 1, characterized in that: The clamping fastener (3) is integrally formed with the hand grip (2) through a bend-resistant sheet portion (31); or the clamping fastener (3) is hinged to the hand grip (2) by a hinge or pivot.

3. The adjustable arm lever according to claim 1, characterized in that: The slider (4) is provided with an elastic protrusion (41), and the outer side of the cavity (21) opening of the hand grip (2) is provided with a blocking part (23). The elastic protrusion (41) and the blocking part (23) can engage with each other.

4. An adjustable arm lever according to claim 3, characterized in that: The elastic protrusion (41) and the slider (4) are integrally formed.

5. An adjustable arm lever according to claim 1, characterized in that: The slider (4) is provided with a socket (42), and the end of the elastic element (1) is inserted into the socket (42) and fixed by interference fit; or the slider (4) and the elastic element (1) are integrally formed.

6. An adjustable arm lever according to claim 1, characterized in that: The outer wall of the hand grip (2) is provided with an anti-slip concave-convex structure (24), and a safety rope (5) is connected to the hand grip (2).

7. An adjustable arm lever according to claim 1, characterized in that: The elastic element (1) is made of glass fiber or spring steel.

8. An adjustable arm lever according to claim 1, characterized in that: The elastic element (1) is in the shape of a flat strip, a round strip, or a polygonal strip.

9. An adjustable arm lever according to claim 1, characterized in that: The elastic element (1) is covered with an anti-breakage sleeve, which is a silicone sleeve, a heat-shrink sleeve, or a foam sleeve.

10. An adjustable arm lever according to claim 1, characterized in that: The surface of the elastic element (1) is provided with a scale (11).

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