High position pull-down power training device

Abstract

This invention discloses a high-position lat pulldown strength trainer, relating to the technical field of strength training devices. It includes an adaptive mechanism mounted on top of a weight block support. The adaptive mechanism includes a fixed rod fixedly mounted on the top of the weight block support, with a movable pulley assembly at the end of the fixed rod away from the weight block support. By setting up the adaptive mechanism and a pair of movable pulley assemblies, each connected via a corresponding rotating shaft, the movable pulley assemblies can swing left and right according to the direction of force on the steel cable. This makes the user's pulldown trajectory no longer rigidly vertical, but rather an ergonomic arc movement centered on the shoulder. Furthermore, the split-motion design allows users to perform single-arm training or alternating training, correcting left-right muscle imbalances.

Description

Technical Field

[0001] This invention relates to the technical field of strength training devices, specifically to a lat pulldown strength training device. Background Technology

[0002] The lat pulldown machine is a strength training device specifically designed to work the back muscles, especially the latissimus dorsi. It simulates a pull-up by pulling down a horizontal bar while seated, helping to strengthen upper body strength, improve posture, and enhance scapular stability. Due to its relatively fixed movement trajectory, it is safe for fitness enthusiasts at different levels and is one of the most frequently used core pieces of equipment in gyms. Users can progressively train by selecting different weights and handles. The main target muscle groups include the latissimus dorsi, teres major, teres minor, trapezius, posterior deltoid, and biceps brachii, making it an essential exercise for sculpting a V-shaped physique and improving rounded shoulders and hunchback. Traditional lat pulldown machines have a relatively simple cable trajectory, which is basically a straight up and down movement. When users need to use one arm, they need to better contract the target muscle group, resulting in a large overall range of motion. However, traditional lat pulldown machines are not suitable for unilateral use, as the overall force line movement trajectory will be limited. In addition, traditional lat pulldown machines do not allow users to separate their hands to grip the handles, which may not be applicable in some situations. Furthermore, if damage occurs, the breakage of a single cable may cause the user to fall and get injured. Summary of the Invention

[0003] The purpose of this application is to provide a lat pulldown strength training device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: including an adaptive mechanism disposed on the top of the counterweight support;

[0005] The adaptive mechanism includes a fixed rod fixedly mounted on the top of the counterweight support. A movable pulley assembly is provided at the end of the fixed rod away from the counterweight support. The movable pulley assembly includes a pair of rotating cylinders rotatably mounted on the end of the fixed rod away from the counterweight support. Each rotating cylinder is fixedly mounted with a corresponding movable pulley plate. A first pulley is rotatably arranged at equal intervals in each movable pulley plate. The movable pulley assembly also includes a hook buckle. The hook buckle is fixedly connected to a corresponding steel wire rope. The steel wire rope is slidably connected to its corresponding first pulley.

[0006] Preferably, the fixed rod near the end of the counterweight bracket is also provided with fixed pulley plates arranged at equal intervals. A corresponding second pulley is fixed between each pair of fixed pulley plates. Each wire rope slides through the corresponding second pulley and is wound and connected to the third pulley. The third pulley is rotatably arranged in the fixed drum plate. The fixed drum plate is fixedly connected to the pin plate in the counterweight plate group. The counterweight plate group consists of multiple counterweight plates and pin plates. Each counterweight plate has a corresponding hole. The pin plate in the counterweight plate group is fixedly connected to the topmost counterweight plate in it. The counterweight plate group also includes counterweight plate pins.

[0007] Preferably, a pair of counterweight limiting rods are also fixedly provided inside the counterweight support, the pin plate in the counterweight plate group and each counterweight plate are slidably connected to the counterweight limiting rods, a first fixing plate is also fixedly provided on the counterweight support, and a first auxiliary handle is also fixedly provided on the first fixing plate.

[0008] Preferably, a seat bracket is also fixedly provided on one side of the counterweight support, a seat is fixedly provided on the seat bracket, a fixing sleeve is also fixedly provided on the seat bracket, a sliding rod is slidably provided inside the fixing sleeve, a pair of leg limiting plates are fixedly provided at the top of the sliding rod, a second fixing plate is also fixedly provided on the leg limiting plate, a second auxiliary handle is also fixedly provided on the second fixing plate, a spring pin is also fixedly provided on the fixing sleeve, holes are equidistantly arranged on the sliding rod, the spring pin is composed of a spring and a pin, and the pin inside the spring pin is slidably connected to the fixing sleeve.

[0009] Preferably, the counterweight bracket is provided with handle hooks arranged at equal intervals, and a connecting rod is fixedly provided at the end of the counterweight bracket away from the seat bracket, and the connecting rod is also provided with a crossbar groove.

[0010] Compared with existing technologies, the present invention has the following beneficial effects: By setting an adaptive mechanism and a pair of movable pulley groups, each connected by a corresponding rotating shaft, the present invention allows the movable pulley groups to swing left and right according to the direction of force on the steel wire rope. This makes the user's pull-down trajectory no longer rigidly vertical, but rather an arc-shaped movement centered on the shoulder according to ergonomics. Furthermore, the separate-motion design allows the user to perform single-arm training or alternating training, correcting imbalances in left and right muscle strength. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, some of the accompanying drawings in the embodiments of this application will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be considered as a limitation on the scope of this application.

[0012] Figure 1 This is a schematic diagram of the first overall structure according to an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the second overall structure of an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the overall structure of the third embodiment of the present invention;

[0015] Figure 4 This is an embodiment of the present invention. Figure 1 Enlarged view of point A in the middle;

[0016] Figure 5 This is an embodiment of the present invention. Figure 1 Enlarged view of point B in the middle;

[0017] Figure 6 This is an embodiment of the present invention. Figure 2 Enlarged view of point C in the middle;

[0018] Figure 7 This is an embodiment of the present invention. Figure 3 Enlarged view of point D;

[0019] Figure 8 This is an embodiment of the present invention. Figure 3 Enlarged view of point E in the middle;

[0020] In the diagram: 11. Counterweight bracket; 12. Seat bracket; 13. Seat; 14. Counterweight limiting rod; 15. Counterweight plate assembly; 16. Handle hook; 17. Leg limiting plate; 18. Fixing sleeve; 19. Sliding rod; 20. Second fixing plate; 21. Second auxiliary grip; 22. Fixing rod; 23. Fixed pulley plate; 24. Second pulley; 25. Rotating cylinder; 26. Movable pulley plate; 27. First pulley; 28. Steel wire rope; 29. ​​Hook buckle; 30. First fixing plate; 31. First auxiliary grip; 32. Counterweight plate pin; 33. Connecting rod; 34. Crossbar groove; 35. Spring pin; 36. Fixed drum plate; 37. Third pulley; 38. Counterweight plate; 61. Adaptive mechanism; 62. Movable pulley assembly. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Combined with appendix Figures 1-8The high-position lat pulldown strength training device includes an adaptive mechanism 61 set on the top of the counterweight support 11.

[0023] The adaptive mechanism 61 includes a fixed rod 22 fixedly mounted on the top of the counterweight support 11. A movable pulley assembly 62 is provided at one end of the fixed rod 22 away from the counterweight support 11. The movable pulley assembly 62 includes a pair of rotating cylinders 25 rotatably mounted on the end of the fixed rod 22 away from the counterweight support 11. Each rotating cylinder 25 is fixedly mounted with a corresponding movable pulley plate 26. A first pulley 27 is rotatably arranged at equal intervals within each movable pulley plate 26. The movable pulley assembly 62 also includes a hook buckle 29, which is fixedly connected to a corresponding steel wire rope 28. The steel wire rope 28 is slidably connected to its corresponding first pulley 27, and slides between the first pulleys 27. The hook buckle 29 is used to connect to a handle.

[0024] Advantageously, fixed pulley plates 23 are also equidistantly arranged and fixed at one end of the fixed rod 22 near the counterweight bracket 11. A corresponding second pulley 24 is fixed between each pair of fixed pulley plates 23. Each wire rope 28 slides through the corresponding second pulley 24 and is wound and connected to the third pulley 37. The third pulley 37 is rotatably disposed in the fixed drum plate 36. The fixed drum plate 36 is fixedly connected to the pin plate in the counterweight plate group 15. The counterweight plate group 15 is composed of multiple counterweight plates 38 and pin plates. Each counterweight plate 38 is provided with a corresponding hole. The pin plate in the counterweight plate group 15 is fixedly connected to the topmost counterweight plate 38. The counterweight plate group 15 also includes a counterweight plate pin 32. The counterweight plate pin 32 can cooperate with the hole on the counterweight plate 38 and the pin hole on the pin plate to lock the corresponding counterweight plate 38.

[0025] Advantageously, a pair of counterweight limiting rods 14 are also fixedly provided inside the counterweight support 11, and the pin plate in the counterweight plate group 15 and each of the counterweight plates 38 are slidably connected to the counterweight limiting rods 14. A first fixing plate 30 is also fixedly provided on the counterweight support 11, and a first auxiliary grip 31 is also fixedly provided on the first fixing plate 30. The first auxiliary grip 31 is used for convenient support.

[0026] Advantageously, a seat bracket 12 is also fixedly mounted on one side of the counterweight support 11, a seat 13 is fixedly mounted on the seat bracket 12, and a fixing sleeve 18 is also fixedly mounted on the seat bracket 12. A sliding rod 19 is slidably mounted inside the fixing sleeve 18, and a pair of leg limiting plates 17 are fixedly mounted on the top of the sliding rod 19. The leg limiting plates 17 are used to hold the user's knees. A second fixing plate 20 is also fixedly mounted on the leg limiting plate 17, and a second auxiliary grip 21 is also fixedly mounted on the second fixing plate 20. The second auxiliary grip 21 is used to assist the user in gripping. A spring pin 35 is also fixedly mounted on the fixing sleeve 18. Holes are evenly arranged on the sliding rod 19, and the pin portion of the spring pin 35 can be inserted into the hole on the sliding rod 19 for locking. The spring pin 35 consists of a spring and a pin, and the pin inside the spring pin 35 is slidably connected to the fixing sleeve 18.

[0027] Advantageously, the counterweight bracket 11 is provided with handle hooks 16 arranged at equal intervals, the handle hooks 16 are used to place various handles, and the end of the counterweight bracket 11 away from the seat bracket 12 is also fixed with a connecting rod 33, the connecting rod 33 is also provided with a crossbar groove 34, the crossbar groove 34 is used to place a long handle crossbar.

[0028] How to use this invention:

[0029] When the user wants to use this device, they should manually pull open the spring pin 35 to release the lock of the spring pin 35 on the sliding rod 19. Holding the second auxiliary grip 21, the user should lift the leg limiting plate 17 and the sliding rod 19 to a suitable height, sufficient so that the thigh is just against the bottom surface of the leg limiting plate 17. The user then needs to decide which handle to use based on their needs. If using a normal linkage handle, connect the handle to the two hooks 29 and insert the corresponding counterweight 38 through the counterweight pin 32. The device can be used normally within the holes, with little difference from a normal lat pulldown machine. When the user wants to use it alternately on one side, the user connects the two identical handles to the corresponding hooks 29. Then, depending on the needs, the user can pull down with both hands simultaneously or alternately. The rotating cylinder 25 will drive the movable pulley plate 26 to rotate. Through the rotation of the movable pulley plate 26, the trajectory of the steel cable 28 being pulled down is made to better match the force line trajectory of the user on one side, making the overall force line smoother, the target muscle group contraction effect better, and improving the overall training effect.

[0030] The above are merely preferred embodiments of this application. The scope of protection of this application is not limited to the above embodiments. All technical solutions within the scope of this application's concept are within the scope of protection of this application. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this application should also be considered within the scope of protection of this application.

Claims

1. A high-position lat pulldown strength training device, comprising an adaptive mechanism (61) disposed on top of a counterweight support (11), characterized in that: The adaptive mechanism (61) includes a fixed rod (22) fixedly mounted on the top of the counterweight support (11). A movable pulley group (62) is provided at the end of the fixed rod (22) away from the counterweight support (11). The movable pulley group (62) includes a pair of rotating cylinders (25) rotatably mounted at the end of the fixed rod (22) away from the counterweight support (11). Each rotating cylinder (25) is fixedly mounted with a corresponding movable pulley plate (26). A first pulley (27) is rotatably arranged at equal intervals in each movable pulley plate (26). The movable pulley group (62) also includes a hook buckle (29). The hook buckle (29) is fixedly connected to the corresponding wire rope (28). The wire rope (28) is slidably connected to its corresponding first pulley (27).

2. The lat pulldown strength training device according to claim 1, characterized in that: The fixed rod (22) near the counterweight bracket (11) is also provided with fixed pulley plates (23) arranged at equal intervals. Each pair of fixed pulley plates (23) is fixed with a corresponding second pulley (24). Each wire rope (28) slides through the corresponding second pulley (24) and is wound and connected to the third pulley (37). The third pulley (37) is rotatably set in the fixed drum plate (36). The fixed drum plate (36) is fixedly connected to the pin plate in the counterweight plate group (15).

3. The lat pulldown strength training device according to claim 2, characterized in that: The counterweight assembly (15) consists of multiple counterweight plates (38) and a pin plate. Each counterweight plate (38) has a corresponding hole. The pin plate in the counterweight assembly (15) is fixedly connected to the topmost counterweight plate (38). The counterweight assembly (15) also includes a counterweight pin (32).

4. The lat pulldown strength training device according to claim 2, characterized in that: A pair of counterweight limiting rods (14) are also fixedly installed inside the counterweight bracket (11). The pin plate in the counterweight plate group (15) and each of the counterweight plates (38) are slidably connected to the counterweight limiting rods (14). A first fixing plate (30) is also fixedly installed on the counterweight bracket (11). A first auxiliary handle (31) is also fixedly installed on the first fixing plate (30).

5. A lat pulldown strength training device according to claim 4, characterized in that: A seat bracket (12) is also fixedly provided on one side of the counterweight bracket (11), a seat (13) is fixedly provided on the seat bracket (12), a fixing sleeve (18) is also fixedly provided on the seat bracket (12), and a sliding rod (19) is slidably provided inside the fixing sleeve (18).

6. A lat pulldown strength training device according to claim 5, characterized in that: A pair of leg limiting plates (17) are fixedly provided on the top of the sliding rod (19). A second fixing plate (20) is also fixedly provided on the leg limiting plate (17). A second auxiliary grip (21) is also fixedly provided on the second fixing plate (20). A spring pin (35) is also fixedly provided on the fixing sleeve (18). Holes are arranged at equal intervals on the sliding rod (19).

7. A lat pulldown strength training device according to claim 6, characterized in that: The spring pin (35) consists of a spring and a pin, and the pin inside the spring pin (35) is slidably connected to the fixed sleeve (18).

8. A lat pulldown strength training device according to claim 5, characterized in that: Handle hooks (16) are arranged at equal intervals on the counterweight bracket (11). A connecting rod (33) is also fixedly provided at one end of the counterweight bracket (11) away from the seat bracket (12). A crossbar groove (34) is also provided on the connecting rod (33).

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