Counterweight adjusting device of sports equipment
By using quick-release components and a locking ring structure, the problem of cumbersome operation and precise fine-tuning of traditional sports equipment weight adjustment devices has been solved, enabling quick locking and precise fine-tuning of the weight plates, thus improving the flexibility and safety of training.
Patent Information
- Application Number
- CN202520562135.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Traditional sports equipment's counterweight adjustment devices are cumbersome and time-consuming to operate, making it difficult to quickly adapt to dynamic training needs. Furthermore, counterweight plates are prone to falling off due to improper locking during loading and unloading, and fixed counterweight blocks have large increments, making precise fine-tuning difficult.
It adopts quick-release components and a locking ring structure, and achieves quick locking and unlocking of the counterweight through the cooperation of push-pull rod and ball bearing. Combined with the design of steel wire rope and knob, it enables quick adjustment and precise fine-tuning of the counterweight.
It enables rapid adjustment and precise fine-tuning of the weight plates, improving the flexibility and safety of training and adapting to personalized training intensity needs.
Smart Images
Figure CN223615324U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of weight adjustment technology for sports equipment, and in particular to a weight adjustment device for sports equipment. Background Technology
[0002] The weight adjustment function in sports equipment allows users to flexibly adjust the load intensity according to their own strength level, training goals, or rehabilitation needs by adding or removing weight or adjusting resistance. This function is widely used in strength training, rehabilitation equipment, and specific sports simulations. It helps beginners gradually improve their physical fitness and avoid sports injuries, while also meeting the refined training needs of professional athletes for different goals such as explosive power and endurance. At the same time, it provides safe and controllable intensity adaptation for post-injury recovery, making it a core design feature for improving training efficiency and ensuring sports safety.
[0003] Traditional sports equipment typically controls load by adding or removing metal weight plates or adjusting the position of pins. By adding or removing barbell plates and securing them with safety buckles, and by using pins to select different weights for combination equipment, users need to ensure that the pins, buckles and other locking devices are secure after selecting the appropriate weight for muscle building or endurance training to prevent slippage during exercise, so that the equipment can be adapted to the needs of different fitness levels and training stages.
[0004] Traditional sports equipment's counterweight adjustment devices are cumbersome, time-consuming, and labor-intensive to install and remove counterweight plates, making it difficult to quickly adapt to dynamic training needs. Counterweight plates are prone to falling off due to loose pins during installation and removal. Fixed counterweights have large increments, making it difficult to achieve precise fine-tuning and limiting personalized intensity adaptation. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a counterweight adjustment device for sports equipment, which aims to improve the problems of traditional counterweight adjustment devices for sports equipment, such as cumbersome, time-consuming and laborious operation when installing and removing counterweight plates, difficulty in quickly adapting to dynamic training needs, and the risk of counterweight plates falling off due to improper locking during installation and removal.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a weight adjustment device for sports equipment, comprising a base, a bracket fixedly connected to the upper surface of the base, a gantry frame fixedly connected to one end of the bracket, a fixing block fixedly connected to the outer wall of the gantry frame, a connecting rod rotatably connected to the outer wall of the fixing block, a fixing column fixedly connected to the outer wall of the bracket, a rotating shaft rotatably connected to the outer wall of the fixing column, a barbell rod fixedly connected to one end of the rotating shaft, a limit block fixedly connected to the outer wall of the barbell rod, a counterweight plate slidably connected to the outer wall of the barbell rod, and a quick-release assembly provided inside the barbell rod;
[0007] The quick-release assembly includes a push-pull rod and a ball bearing. The push-pull rod is slidably connected inside the barbell bar, and the outer wall of the ball bearing is slidably connected inside the barbell bar. A spring is fixedly connected to the outer wall of the push-pull rod, and a push plate is fixedly connected to one end of the spring. A push block is fixedly connected to the outer wall of the push-pull rod, and one side of the outer wall of the ball bearing is slidably connected to the outer wall of the push block.
[0008] Furthermore, a locking block is fixedly connected to the outer wall of the linkage rod, a slider is fixedly connected to one side of the outer wall of the linkage rod, a sliding groove is provided inside the slider, a locking ring is fixedly connected to the outer wall of the slider, a locking slot is provided inside the locking ring, a knob is provided at one end of the locking ring, a spring is provided inside the knob, a pin is fixedly connected to the inner wall of the knob, and a limit post is fixedly connected to the outer wall of the pin.
[0009] Furthermore, one end of the second spring is fixedly connected to the outer wall of the pin.
[0010] Furthermore, a pulley is provided on one side of the outer wall of the gantry frame, and the outer wall of the pulley is fixedly connected to the outer wall of the fixed block.
[0011] Furthermore, a steel wire rope is fixedly connected to the outer wall of the knob, one end of the steel wire rope is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the steel wire rope is slidably connected to the outer wall of the pulley.
[0012] Furthermore, a seat is provided between the base and the gantry frame, and the barbell bar is positioned above the base.
[0013] Furthermore, a seat is provided on the top of the base, and a handle is fixedly connected to one end of the linkage rod.
[0014] Furthermore, the outer wall of the pin is slidably connected to the inside of the locking ring, and the outer wall of the pin is rotatably connected to the inside of the knob.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, by pulling down the push-pull rod, the spring is compressed and stored energy is released. The push block moves backward with the push-pull rod, releasing the radial pressure on the ball. Under the guidance of gravity and the inner wall of the counterweight plate, the ball retracts into the barbell bar, releasing the lock on the counterweight plate. At this time, the counterweight plate can slide freely along the guide groove of the limit block. This solves the problem of the cumbersome, time-consuming and laborious operation of traditional counterweight adjustment devices when adding or removing counterweight plates, making it difficult to quickly adapt to dynamic training needs. The counterweight plate is also prone to falling off due to the pin not being locked. This invention achieves the effect of quickly adjusting the counterweight.
[0017] 2. In this utility model, after adjusting the slider to the preset height via the slide groove, the pin at the end of the wire rope is inserted into the corresponding slot of the locking ring. Rotating the knob causes the limiting post at the tail of the pin to physically interfere with the side wall of the locking ring, preventing the pin from coming out due to external impact. By selecting slots of different heights, the traction length of the wire rope can be adjusted. This solves the problem that the fixed counterweight block of the traditional counterweight adjustment device has a large increment and is difficult to achieve precise fine adjustment, thus achieving the effect of precise fine adjustment of tension to adapt to personalized training intensity. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a counterweight adjustment device for sports equipment proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of one side of the barbell bar structure of a weight adjustment device for sports equipment proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of a barbell bar in a weight adjustment device for sports equipment proposed in this utility model.
[0021] Figure 4 This is a schematic diagram of one side of the linkage rod structure of a counterweight adjustment device for sports equipment proposed in this utility model;
[0022] Figure 5 This is a schematic diagram of the internal structure of the locking ring and knob of a weight adjustment device for sports equipment proposed in this utility model.
[0023] Legend:
[0024] 1. Base; 2. Gantry frame; 3. Seat; 4. Axle; 5. Barbell bar; 6. Counterweight plate; 7. Limiting block; 8. Steel wire rope; 9. Pulley; 10. Linkage rod; 11. Handle; 12. Push-pull rod; 13. Ball bearing; 14. Push block; 15. Spring 1; 16. Push plate; 17. Slide groove; 18. Locking block; 19. Locking ring; 20. Knob; 21. Bayonet; 22. Pin; 23. Limiting post; 24. Spring 2; 25. Fixing post; 26. Fixing block; 27. Bracket; 28. Slider. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figure 1 - Figure 5 This utility model provides an embodiment of a weight adjustment device for sports equipment, including a base 1. The base 1 is used to ensure that the sports equipment will not shake or tip over during use, thus ensuring user safety. A bracket 27 is fixedly connected to the upper surface of the base 1. A gantry frame 2 is fixedly connected to one end of the bracket 27. A fixing block 26 is fixedly connected to the outer wall of the gantry frame 2. A connecting rod 10 is rotatably connected to the outer wall of the fixing block 26. A handle 11 allows the user to easily control the movement of the connecting rod 10. The connecting rod 10 is used to transmit the force applied by the user to the steel wire rope 8, thereby driving the barbell bar 5 to move. A fixing column 25 is fixedly connected to the outer wall of the bracket 27. A rotating shaft 4 is rotatably connected to the outer wall of the fixing column 25. A barbell bar 5 is fixedly connected to one end of the rotating shaft 4. A limit block 7 is fixedly connected to the outer wall of the barbell bar 5. The limit block 7 ensures that the weight plate 6 will not slide arbitrarily during training and also provides a guiding function for the installation and removal of the weight plate 6. The weight plate 6 is slidably connected to the outer wall of the barbell bar 5. A quick-release assembly is provided inside the barbell bar 5.
[0027] The quick-release assembly includes a push-pull rod 12 and a ball bearing 13. The push-pull rod 12 is slidably connected inside the barbell bar 5, and the outer wall of the ball bearing 13 is slidably connected inside the barbell bar 5. The ball bearing 13 prevents the weight plate 6 from accidentally sliding due to external force during training. A spring 15 is fixedly connected to the outer wall of the push-pull rod 12, providing elastic potential energy for unlocking the weight plate 6. A push plate 16 is fixedly connected to one end of the spring 15. A push block 14 is fixedly connected to the outer wall of the push-pull rod 12, and one side of the outer wall of the ball bearing 13 is slidably connected to the outer wall of the push block 14, thus linking the components together. A locking block 18 is fixedly connected to the outer wall of the rod 10. A slider 28 is fixedly connected to one side of the outer wall of the linkage rod 10. A groove 17 is opened inside the slider 28. A locking ring 19 is fixedly connected to the outer wall of the slider 28. A slot 21 is opened inside the locking ring 19. A knob 20 is set at one end of the locking ring 19. A spring 24 is set inside the knob 20. A pin 22 is fixedly connected to the inner wall of the knob 20. A limit post 23 is fixedly connected to the outer wall of the pin 22 to prevent the pin 22 from falling out due to external impact, which further improves the safety and stability of the wire rope 8 fixing.
[0028] Reference Figure 1 - Figure 5One end of spring 24 is fixedly connected to the outer wall of pin 22. A pulley 9 is provided on one side of the outer wall of the gantry frame 2. The outer wall of pulley 9 is fixedly connected to the outer wall of the fixing block 26. A steel wire rope 8 is fixedly connected to the outer wall of knob 20. The steel wire rope 8 is used to transmit the movement of connecting rod 10 to rotating shaft 4, thereby driving barbell bar 5 to move. One end of steel wire rope 8 is fixedly connected to the outer wall of rotating shaft 4. The outer wall of steel wire rope 8 is slidably connected to the outer wall of pulley 9. A seat 3 is provided between base 1 and gantry frame 2. Barbell bar 5 is provided above base 1. Seat 3 is provided on top of base 1. One end of connecting rod 10 is fixedly connected to handle 11. The outer wall of pin 22 is slidably connected to the inside of locking ring 19. The outer wall of pin 22 is rotatably connected to the inside of knob 20.
[0029] Working principle: First, the user places the counterweight plate 6 on the outer wall of the barbell bar 5. Its inner diameter matches the guide groove of the limiting block 7, restricting axial freedom. The spring 15 is normally in an extended state, pushing the push plate 16 to push the push-pull rod 12 towards the front end of the barbell bar 5. The push block 14 of the push-pull rod 12 is designed as a conical inclined surface, forcing the ball bearing 13 to expand radially along the inclined surface and embed into the annular groove on the inner wall of the counterweight plate 6, forming a multi-point mechanical interlock to prevent the counterweight plate 6 from accidentally sliding during training. When the counterweight needs to be replaced, the user pulls down the push-pull rod 12, compressing the spring 15 to store energy. The push block 14 moves backward with the push-pull rod 12, releasing the radial pressure on the ball bearing 13. Under the guidance of gravity and the inner wall of the counterweight plate 6, the ball bearing 13 retracts into the barbell bar 5, releasing the lock on the counterweight plate 6. At this time, the counterweight plate 6 can slide freely along the guide groove of the limiting block 7. The user can quickly adjust the weight. In addition, after adjusting the slider 28 to the preset height via the slide groove 17, the user inserts the pin 22 at the end of the wire rope 8 into the corresponding slot 21 of the locking ring 19. Rotating the knob 20 causes the limiting post 23 at the tail of the pin 22 to physically interfere with the side wall of the locking ring 19, preventing the pin 22 from coming off due to external impact. By selecting different height slots 21, the traction length of the wire rope 8 can be adjusted. Combined with the leverage effect of the pulley 9, the tension can be precisely adjusted to suit individual training intensity. After adjustment, the user sits on the seat 3 and pushes the handle 11 to drive the linkage 10 to rotate around the fixed block 26. The wire rope 8 pulls the rotating shaft 4 to drive the barbell bar 5 to move, forming a closed-loop resistance transmission. At the same time, the rigid locking of the locking ring 19 and the pin 22 ensures the stability of the movement trajectory, achieving safe and controllable strength training.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A counterweight adjustment device for sports equipment, comprising a base (1), characterized in that: A bracket (27) is fixedly connected to the upper surface of the base (1). A gantry frame (2) is fixedly connected to one end of the bracket (27). A fixing block (26) is fixedly connected to the outer wall of the gantry frame (2). A connecting rod (10) is rotatably connected to the outer wall of the fixing block (26). A fixing column (25) is fixedly connected to the outer wall of the bracket (27). A rotating shaft (4) is rotatably connected to the outer wall of the fixing column (25). A barbell rod (5) is fixedly connected to one end of the rotating shaft (4). A limit block (7) is fixedly connected to the outer wall of the barbell rod (5). A counterweight plate (6) is slidably connected to the outer wall of the barbell rod (5). A quick-release assembly is provided inside the barbell rod (5). The quick-release assembly includes a push-pull rod (12) and a ball bearing (13). The push-pull rod (12) is slidably connected inside the barbell bar (5). The outer wall of the ball bearing (13) is slidably connected inside the barbell bar (5). A spring (15) is fixedly connected to the outer wall of the push-pull rod (12). A push plate (16) is fixedly connected to one end of the spring (15). A push block (14) is fixedly connected to the outer wall of the push-pull rod (12). One side of the outer wall of the ball bearing (13) is slidably connected to the outer wall of the push block (14).
2. The weight adjustment device for sports equipment according to claim 1, characterized in that: A locking block (18) is fixedly connected to the outer wall of the linkage rod (10). A slider (28) is fixedly connected to one side of the outer wall of the linkage rod (10). A sliding groove (17) is provided inside the slider (28). A locking ring (19) is fixedly connected to the outer wall of the slider (28). A slot (21) is provided inside the locking ring (19). A knob (20) is provided at one end of the locking ring (19). A spring (24) is provided inside the knob (20). A pin (22) is fixedly connected to the inner wall of the knob (20). A limit post (23) is fixedly connected to the outer wall of the pin (22).
3. The weight adjustment device for sports equipment according to claim 2, characterized in that: One end of the second spring (24) is fixedly connected to the outer wall of the pin (22).
4. The weight adjustment device for sports equipment according to claim 1, characterized in that: A pulley (9) is provided on one side of the outer wall of the gantry frame (2), and the outer wall of the pulley (9) is fixedly connected to the outer wall of the fixing block (26).
5. The weight adjustment device for sports equipment according to claim 2, characterized in that: A steel wire rope (8) is fixedly connected to the outer wall of the knob (20). One end of the steel wire rope (8) is fixedly connected to the outer wall of the rotating shaft (4), and the outer wall of the steel wire rope (8) is slidably connected to the outer wall of the pulley (9).
6. The counterweight adjustment device for sports equipment according to claim 1, characterized in that: A seat (3) is provided between the base (1) and the gantry (2), and the barbell bar (5) is provided above the base (1).
7. The counterweight adjustment device for sports equipment according to claim 1, characterized in that: The base (1) is provided with a seat (3) on top, and a handle (11) is fixedly connected to one end of the linkage (10).
8. The weight adjustment device for sports equipment according to claim 2, characterized in that: The outer wall of the pin (22) is slidably connected to the inside of the locking ring (19), and the outer wall of the pin (22) is rotatably connected to the inside of the knob (20).