Counterweight module

Abstract

The utility model provides a counterweight module, which relates to the technical field of fitness equipment and comprises a support group, a bearing frame, a counterweight arm and a connecting rod mechanism, the bearing frame is connected to the support group, the counterweight arm is rotatably connected to the bearing frame and is used for mounting a counterweight block, and the connecting rod mechanism is connected between the counterweight arm and the bearing frame; a first connecting point and a second connecting point are arranged on the connecting rod mechanism; the balance weight structure of the hanging piece balance weight fitness equipment is decoupled and independent, a universal and standardized balance weight module is formed, the balance weight is installed through the balance weight arm, the first connecting point or the second connecting point on the connecting rod mechanism is matched with the knuckle bearing to be connected with different fitness equipment, and the universal purpose can be achieved. No matter how the motion trail of the fitness equipment changes and how the functional areas are different, the module can be matched and conveniently used for weight balancing, and training resistance is provided.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to a counterweight module. Background Technology

[0002] In the field of strength training, plated weight training equipment is widely used due to its advantages such as simple structure, strong load-bearing capacity, and adjustable training intensity. However, the traditional plated weight training equipment currently on the market has significant limitations in its weight structure design, especially in the non-universal placement of the weight plates and the resulting series of drawbacks.

[0003] Traditional weight training equipment often features non-fixed weight plate positions, highly dependent on the specific movement trajectory of the machine for customized design. For example, in a bench press rack, the barbell typically has weight plate sleeves at both ends, with the weight plates directly loaded onto these sleeves. The position of the weight plates is relatively fixed on the horizontal axis of the barbell, and the direction of the weight force is always vertically downwards. Another example is the lat pulldown machine, which uses a pulley and cable system to convert the vertical movement of the weight blocks into the downward movement of the handles. The weight plates are usually located on the weight bar at the back or side of the machine. While the direction of the weight force is still vertically downwards, the clever combination of pulleys and cables transforms this downward force into downward resistance acting on the handles.

[0004] The above examples fully illustrate that traditional weighted fitness equipment features a highly customized and non-universal design for its weight structure. While this design approach can meet the functional requirements of specific equipment to a certain extent, it also brings many unavoidable drawbacks: increased design difficulty, extended R&D cycle, complex structural design, numerous types of parts, unfavorable for large-scale production, high manufacturing costs, difficulty in product upgrades and replacements, lack of flexibility, complex maintenance, and increased after-sales costs. Therefore, this utility model proposes a weight module to solve the problems existing in the prior art. Summary of the Invention

[0005] To address the aforementioned issues, this utility model proposes a counterweight module that can adapt to any changes in the movement trajectory or functional areas of the fitness equipment, allowing for convenient use of the module to provide training resistance.

[0006] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a counterweight module, including a support group, a load-bearing frame, a counterweight arm, and a linkage mechanism, wherein the load-bearing frame is fixedly connected to the support group; the counterweight arm is rotatably mounted on the load-bearing frame and configured to support the counterweight block through a counterweight block mounting rod;

[0007] The linkage mechanism is connected between the counterweight arm and the load-bearing frame. The linkage mechanism has at least two connection points. The connection points are configured to be adapted to the drive components of different fitness equipment through a detachable connection method, so as to drive the counterweight arm to rotate around the load-bearing frame and provide training resistance.

[0008] The connection points include a first connection point and a second connection point, both of which are used to connect to fitness equipment and drive the counterweight arm to move.

[0009] A further improvement is that the linkage mechanism includes a linkage tube and a linkage rod. The linkage tube is movably connected to the inner side of the counterweight arm, and the linkage rod is movably connected to the inner side of the load-bearing frame. The front ends of the linkage tube and the linkage rod are linked by a hinge.

[0010] A further improvement is that: a first connector is provided on the inner side of the counterweight arm, and the linkage tube is hinged to the first connector through a first bushing and a spherical bearing; a second connector is provided on the inner side of the load-bearing frame, and the linkage rod is hinged to the second connector through a second bushing and a spherical bearing.

[0011] A further improvement is made in that: the front end of the linkage rod is provided with a linkage U-shaped plate, the lower end of the linkage tube is provided with a joint shaft, and the joint shaft is hinged to the linkage U-shaped plate.

[0012] A further improvement is that the connection point includes a first connection point and a second connection point. The first connection point is configured to connect to the pull rod of the fitness equipment through a side tube, a fan-shaped rib plate, and a connecting shaft. The second connection point is configured to directly connect to the pull rod of the fitness equipment through a connecting rod.

[0013] A further improvement is that the load-bearing frame is provided with a mounting base, the mounting base is rotatably connected to the counterweight arm via a rotating block, and the counterweight mounting rod is set perpendicular to the counterweight arm.

[0014] A further improvement is that the top front end of the load-bearing frame is provided with a support, and a buffer block is provided on the support. The buffer block is used to support the counterweight arm and provide cushioning.

[0015] A further improvement is that the support assembly includes multiple sets of horizontal supports, and the layout of the horizontal supports is adapted to the installation requirements of various fitness equipment.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model decouples and makes independent the weight structure of the weight-bearing fitness equipment, forming a universal and standardized weight module. By installing the weight block through the weight arm, and connecting different fitness equipment through the first or second connection point on the linkage mechanism in conjunction with the joint bearing, the universality can be achieved. No matter how the movement trajectory of the fitness equipment changes or how the functional areas are different, it can be adapted and conveniently used to provide training resistance.

[0018] 2. The application of this utility model greatly simplifies the design process, shortens the R&D cycle, standardizes the structural design, improves the versatility of parts, reduces manufacturing costs, improves production efficiency, facilitates product upgrades and replacements, enhances product flexibility, simplifies maintenance, and reduces after-sales costs. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a schematic diagram of the chest-pushing device of this utility model;

[0022] Figure 4 This is a schematic diagram of the tension device of this utility model;

[0023] Figure 5 This is a schematic diagram of the single-sided structure of this utility model.

[0024] The components are as follows: 1. Support assembly; 2. Load-bearing frame; 3. Counterweight arm; 4. Linkage pipe; 5. Linkage rod; 6. Side pipe; 7. Fan-shaped rib plate; 8. Connecting shaft; 9. Connecting rod; 10. Mounting seat; 11. Support; 12. Buffer block; 13. Counterweight mounting rod; 14. First connector; 15. First bushing; 16. Second connector; 17. Second bushing; 18. Linkage U-shaped plate; 19. Joint shaft; 20. Chest pusher; 21. First pull rod; 22. Pulling device; 23. Second pull rod. Detailed Implementation

[0025] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. Example 1

[0026] according to Figure 1 , 2As shown in Figures 3 and 5, this embodiment proposes a counterweight module, including a support group 1, a load-bearing frame 2, a counterweight arm 3, and a linkage mechanism. The load-bearing frame 2 is connected to the support group 1, the counterweight arm 3 is rotatably connected to the load-bearing frame 2, and the counterweight arm 3 is used to install counterweight blocks. The linkage mechanism is connected between the counterweight arm 3 and the load-bearing frame 2.

[0027] The linkage mechanism is provided with at least two connection points, which are configured to be adapted to the drive components of different fitness equipment through a detachable connection, so as to drive the counterweight arm 3 to rotate around the load-bearing frame 2 and provide training resistance.

[0028] The linkage mechanism is provided with a first connection point and a second connection point. Both the first connection point and the second connection point are used to connect to fitness equipment and drive the counterweight arm 3 to move.

[0029] The linkage mechanism includes a linkage tube 4 and a linkage rod 5. The linkage tube 4 is hinged to the middle of the inner side of the counterweight arm 3, and the linkage rod 5 is hinged to the upper end of the inner side of the load-bearing frame 2. The front ends of the linkage tube 4 and the linkage rod 5 are hinged together. A first connector 14 is provided at the middle of the inner side of the counterweight arm 3, and a first bushing 15 is provided above the linkage tube 4. The first bushing 15 is hinged to the first connector 14 via a spherical bearing. A second connector 16 is provided above the inner side of the load-bearing frame 2, and a second bushing 17 is provided at the rear end of the linkage rod 5. The second bushing 17 is hinged to the second connector 16 via a spherical bearing. A linkage U-shaped plate 18 is provided at the front end of the linkage rod 5, and a joint shaft 19 is provided at the lower end of the linkage tube 4. The joint shaft 19 is hinged to the linkage U-shaped plate 18. This utility model innovatively introduces a linkage mechanism composed of multiple rods inside a universal counterweight module. This linkage mechanism is not a simple fixed connection, but rather connects multiple links into a movable mechanism through hinges or joint bearings. Dynamic adjustment of the counterweight arm in three directions: By cleverly designing the geometry, link lengths, and connection positions of the linkage mechanism, the rotation direction of the counterweight arm and the resistance curve of the counterweight remain constant regardless of changes in the direction of external force when the universal counterweight module is applied to fitness equipment with different movement trajectories. Optimized force transmission path: The design of the linkage mechanism optimizes the transmission path of the counterweight force from the hanging plate to the functional area of ​​the equipment, ensuring that the counterweight force can effectively and accurately act in the direction of the resistance that the trainee needs to overcome, thereby guaranteeing training effectiveness. Application of joint bearings: To ensure smooth, fluid, and low-friction movement when dynamically adjusting the direction of the counterweight arm, this invention innovatively uses joint bearings at each moving connection point of the linkage mechanism. Reduced friction and improved motion efficiency: Joint bearings have an extremely low coefficient of friction, which minimizes frictional resistance during the movement of the linkage mechanism, making the transmission of counterweight force more efficient, reducing energy loss, and improving motion efficiency. Increased lifespan and reliable operation: Joint bearings also have advantages such as high strength, wear resistance, and impact resistance, effectively improving the lifespan and reliability of the linkage mechanism, reducing failure rate, and lowering maintenance costs. Principle of universal counterweight module matching different functional areas: Sensing external force direction: The universal counterweight module, connected to the functional areas of the fitness equipment via a link mechanism + joint bearing, can sense the force direction from the functional areas. Adaptive adjustment of the linkage mechanism: When the force direction changes, the linkage mechanism automatically changes its configuration under the action of external force, thereby adjusting the direction of the internal counterweight arm 3 to always maintain consistency with or achieve the optimal matching angle with the external force direction.Precise application of counterweight: Through the coordinated work of linkage mechanism and joint bearing, universal counterweight module can accurately and effectively apply the weight of counterweight plate to the functional area of ​​fitness equipment. No matter how the movement trajectory and force direction of the functional area change, it can provide stable and controllable training resistance.

[0030] When the first connection point is used, a first connecting component is used. The first connecting component includes a side tube 6, a fan-shaped rib plate 7, and a connecting shaft 8. The side tube 6 is connected below the second bushing 17, and the fan-shaped rib plate 7 is connected between the side tube 6 and the linkage rod 5. The lower end of the side tube 6 is provided with a connecting shaft 8, which is used to connect the pull rod of the fitness equipment. A chest press device 20 is installed on the support assembly 1. The connecting end of the chest press device 20 is a first pull rod 21. The first pull rod 21 is hinged to the connecting shaft 8 through a joint shaft head. When using the chest press device 20, pushing the push arm causes the first pull rod 21 to pull the side tube 6, causing the second bushing 17 and the linkage rod 5 to rotate, driving the linkage tube 4 to lift the counterweight arm 3 for training.

[0031] The load-bearing frame 2 has a mounting base 10 on its upper part. A rotating block is rotatably mounted on the inner side of the mounting base 10. The counterweight arm 3 is connected to the rotating block. A counterweight mounting rod 13 is located on the outer side of the counterweight arm 3, and the counterweight mounting rod 13 is used to mount the counterweight. A support 11 is located at the front end of the top of the load-bearing frame 2, and a buffer block 12 supporting the counterweight arm 3 is located above the support 11, providing a cushioning effect. The support group 1 consists of multiple sets of horizontal supports and is used to mount fitness equipment. Example 2

[0032] according to Figure 1 , 2 As shown in Figures 4 and 5, this embodiment proposes a counterweight module, including a support group 1, a load-bearing frame 2, a counterweight arm 3, and a linkage mechanism. The load-bearing frame 2 is connected to the support group 1, the counterweight arm 3 is rotatably connected to the load-bearing frame 2, and the counterweight arm 3 is used to install counterweight blocks. The linkage mechanism is connected between the counterweight arm 3 and the load-bearing frame 2.

[0033] The linkage mechanism is provided with a first connection point and a second connection point. Both the first connection point and the second connection point are used to connect to fitness equipment and drive the counterweight arm 3 to move.

[0034] The linkage mechanism includes a linkage tube 4 and a linkage rod 5. The linkage tube 4 is hinged to the middle of the inner side of the counterweight arm 3, and the linkage rod 5 is hinged to the upper end of the inner side of the load-bearing frame 2. The front ends of the linkage tube 4 and the linkage rod 5 are hinged together. A first connector 14 is provided at the middle of the inner side of the counterweight arm 3, and a first bushing 15 is provided above the linkage tube 4. The first bushing 15 is hinged to the first connector 14 via a spherical bearing. A second connector 16 is provided above the inner side of the load-bearing frame 2, and a second bushing 17 is provided at the rear end of the linkage rod 5. The second bushing 17 is hinged to the second connector 16 via a spherical bearing. A linkage U-shaped plate 18 is provided at the front end of the linkage rod 5, and a joint shaft 19 is provided at the lower end of the linkage tube 4. The joint shaft 19 is hinged to the linkage U-shaped plate 18. This utility model innovatively introduces a linkage mechanism composed of multiple rods inside a universal counterweight module. This linkage mechanism is not a simple fixed connection, but rather connects multiple links into a movable mechanism through hinges or joint bearings. Dynamic adjustment of the counterweight arm in three directions: By cleverly designing the geometry, link lengths, and connection positions of the linkage mechanism, the rotation direction of the counterweight arm and the resistance curve of the counterweight remain constant regardless of changes in the direction of external force when the universal counterweight module is applied to fitness equipment with different movement trajectories. Optimized force transmission path: The design of the linkage mechanism optimizes the transmission path of the counterweight force from the hanging plate to the functional area of ​​the equipment, ensuring that the counterweight force can effectively and accurately act in the direction of the resistance that the trainee needs to overcome, thereby guaranteeing training effectiveness. Application of joint bearings: To ensure smooth, fluid, and low-friction movement when dynamically adjusting the direction of the counterweight arm, this invention innovatively uses joint bearings at each moving connection point of the linkage mechanism. Reduced friction and improved motion efficiency: Joint bearings have an extremely low coefficient of friction, which minimizes frictional resistance during the movement of the linkage mechanism, making the transmission of counterweight force more efficient, reducing energy loss, and improving motion efficiency. Increased lifespan and reliable operation: Joint bearings also have advantages such as high strength, wear resistance, and impact resistance, effectively improving the lifespan and reliability of the linkage mechanism, reducing failure rate, and lowering maintenance costs. Principle of universal counterweight module matching different functional areas: Sensing external force direction: The universal counterweight module, connected to the functional areas of the fitness equipment via a link mechanism + joint bearing, can sense the force direction from the functional areas. Adaptive adjustment of the linkage mechanism: When the force direction changes, the linkage mechanism automatically changes its configuration under the action of external force, thereby adjusting the direction of the internal counterweight arm 3 to always maintain consistency with or achieve the optimal matching angle with the external force direction.Precise application of counterweight: Through the coordinated work of linkage mechanism and joint bearing, universal counterweight module can accurately and effectively apply the weight of counterweight plate to the functional area of ​​fitness equipment. No matter how the movement trajectory and force direction of the functional area change, it can provide stable and controllable training resistance.

[0035] When using the second connection point, a second connecting member is used, which is a connecting rod 9. The connecting rod 9 is located on one side of the linkage U-shaped plate 18 and is used to connect the pull rod of the fitness equipment. The support assembly 1 connects to the tension equipment 22. The connecting end of the tension equipment 22 is the second pull rod 23. The second pull rod 23 is hinged to the connecting rod 9 through a joint shaft. When using the chest press equipment 20, pulling the pull arm will cause the second pull rod 23 to pull the connecting rod 9, causing the linkage rod 5 to rotate and drive the linkage tube 4 to lift the counterweight arm 3 for training.

[0036] The load-bearing frame 2 has a mounting base 10 on its upper part. A rotating block is rotatably mounted on the inner side of the mounting base 10. The counterweight arm 3 is connected to the rotating block. A counterweight mounting rod 13 is located on the outer side of the counterweight arm 3, and the counterweight mounting rod 13 is used to mount the counterweight. A support 11 is located at the front end of the top of the load-bearing frame 2, and a buffer block 12 supporting the counterweight arm 3 is located above the support 11, providing a cushioning effect. The support group 1 consists of multiple sets of horizontal supports and is used to mount fitness equipment.

[0037] The universal counterweight module of this utility model can be widely used in various fitness equipment with different functional areas, such as:

[0038] Chest press training equipment: Whether it is a flat bench press, incline bench press, or decline bench press machine, the universal weight module can adaptively adjust the direction of the weight arm according to the direction of the pressing trajectory, providing the best training resistance.

[0039] Rowing training equipment: Whether it is seated rowing, standing rowing or T-bar rowing equipment, the universal weight module can adaptively adjust the direction of the weight arm according to the direction of the rowing trajectory, providing training resistance that conforms to the human body's force curve.

[0040] Squat training equipment: such as hack squats, barbell squat racks, etc. The universal weight module can adaptively adjust the direction of the weight arm according to the squat trajectory, providing stable resistance for squatting and standing up.

[0041] Shoulder training equipment: such as overhead press, lateral raise, and front raise machines. The universal weight module can adaptively adjust the direction of the weight arm according to the direction of the shoulder movement trajectory, providing multi-angle and all-round shoulder training resistance.

[0042] Leg training equipment: such as leg press, leg extension, and leg curl machines. The universal weight module can adaptively adjust the direction of the weight arm according to the direction of the leg movement trajectory, providing training resistance for different leg muscle groups.

[0043] Significantly simplify the design process and shorten the development cycle:

[0044] With the adoption of universal weight modules, designers no longer need to spend a lot of energy on customizing the weight structure when developing new weighted fitness equipment. They can focus on the innovative design of the core components such as the movement trajectory, ergonomics, and functionality of the equipment.

[0045] The counterweight component can directly call upon and integrate existing general-purpose counterweight modules, which greatly simplifies the design process, shortens the R&D cycle, and accelerates the launch of new products.

[0046] Standardized structural design improves the versatility of components:

[0047] The universal counterweight module adopts a standardized structural design and component selection, which makes the internal components of the module highly versatile, and even allows for the interchangeability of components between different modules.

[0048] This will greatly simplify parts management, reduce procurement difficulties, improve parts utilization, and lay the foundation for large-scale production.

[0049] Reduce manufacturing costs and improve production efficiency:

[0050] The standardized design of the universal counterweight module enables large-scale, automated production. Factories can use standardized production lines, molds, and processes to mass-produce the modules, significantly improving production efficiency and reducing unit manufacturing costs.

[0051] At the same time, the commonality of parts also reduces procurement costs, inventory costs, and quality control costs, further reducing overall manufacturing costs.

[0052] Convenient product upgrades and replacements enhance product flexibility.

[0053] After the universal counterweight module is decoupled from the instrument body, product upgrades and replacements become more convenient and flexible.

[0054] For example, when it is necessary to upgrade the counterweight system of the instrument, only the universal counterweight module needs to be replaced or improved, without making major changes to the entire instrument structure. This reduces upgrade costs and difficulty, and enhances the product's life cycle and market competitiveness.

[0055] Simplified maintenance and reduced after-sales costs:

[0056] The standardized structure of the universal counterweight module makes maintenance simpler and more convenient.

[0057] Maintenance personnel only need to be familiar with the structure and principles of the universal counterweight module to quickly troubleshoot and replace parts. The universality of parts also reduces spare parts inventory pressure, shortens maintenance cycles, and lowers after-sales maintenance costs.

[0058] This invention decouples and independents the counterweight structure of weighted fitness equipment, forming a universal and standardized counterweight module. The counterweight blocks are installed via the counterweight arm 3, and different fitness equipment can be connected through the first or second connection point on the linkage mechanism in conjunction with the joint bearing. This achieves universality, adapting to any changes in the movement trajectory or functional areas of the fitness equipment. The module allows for convenient use of counterweights to provide training resistance. The application of this universal counterweight module significantly simplifies the design process, shortens the development cycle, standardizes the structural design, improves the versatility of components, reduces manufacturing costs, increases production efficiency, facilitates product upgrades and replacements, enhances product flexibility, simplifies maintenance, and reduces after-sales costs.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A counterweight module, comprising a support assembly (1), a load-bearing frame (2), a counterweight arm (3), and a linkage mechanism, characterized in that: The load-bearing frame (2) is fixedly connected to the support assembly (1); the counterweight arm (3) is rotatably mounted on the load-bearing frame (2) and configured to support the counterweight through the counterweight mounting rod (13); The linkage mechanism is connected between the counterweight arm (3) and the load-bearing frame (2). The linkage mechanism has at least two connection points. The connection points are configured to adapt to the drive components of different fitness equipment through a detachable connection method, so as to drive the counterweight arm (3) to rotate around the load-bearing frame (2) and provide training resistance.

2. The counterweight module according to claim 1, characterized in that: The linkage mechanism includes a linkage tube (4) and a linkage rod (5). The linkage tube (4) is movably connected to the inner side of the counterweight arm (3), and the linkage rod (5) is movably connected to the inner side of the load-bearing frame (2). The front ends of the linkage tube (4) and the linkage rod (5) are linked by a hinge.

3. The counterweight module according to claim 2, characterized in that: The counterweight arm (3) is provided with a first connector (14) on its inner side, and the linkage tube (4) is hinged to the first connector (14) through a first bushing (15) and a joint bearing; the load-bearing frame (2) is provided with a second connector (16) on its inner side, and the linkage rod (5) is hinged to the second connector (16) through a second bushing (17) and a joint bearing.

4. The counterweight module according to claim 3, characterized in that: The front end of the linkage rod (5) is provided with a linkage U-shaped plate (18), and the lower end of the linkage tube (4) is provided with a joint shaft (19), which is hinged to the linkage U-shaped plate (18).

5. The counterweight module according to claim 1, characterized in that: The connection points include a first connection point and a second connection point. The first connection point is configured to connect the pull rod of the fitness equipment through a side tube (6), a fan-shaped rib plate (7) and a connecting shaft (8). The second connection point is configured to directly connect the pull rod of the fitness equipment through a connecting rod (9).

6. The counterweight module according to claim 1, characterized in that: The load-bearing frame (2) is provided with a mounting base (10), which is rotatably connected to the counterweight arm (3) via a rotating block, and the counterweight mounting rod (13) is set perpendicular to the counterweight arm (3).

7. The counterweight module according to claim 1, characterized in that: The top front end of the load-bearing frame (2) is provided with a support (11), and a buffer block (12) is provided on the support (11). The buffer block (12) is used to support the counterweight arm (3) and provide buffering.

8. The counterweight module according to claim 1, characterized in that: The support group (1) includes multiple sets of horizontal supports, the layout of which is adapted to the installation requirements of various fitness equipment.

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