Three-head pressing trainer

Abstract

The utility model provides a three-head pressing training device which comprises a machine frame, a seat plate installed on the machine frame and two swing arms hinged to the machine frame respectively, the two swing arms are located on the two sides of the seat plate respectively, handles are arranged at the ends, close to the seat plate, of the swing arms, barbell shafts used for placing barbell discs are arranged at the other ends of the swing arms, and the barbell shafts are connected with the two swing arms. And a connecting mechanism for connecting / separating the swinging arms is arranged between the two swinging arms. Separation or connection of the two swing arms can be achieved through the connecting mechanism, the two swing arms can act separately and can act synchronously, a trainee can adjust the connecting relation of the two swing arms according to needs, different training requirements are met, and the training effect is good.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a three-head down-press training device. Background Technology

[0002] The triceps pushdown machine is a fitness device used to exercise the triceps brachii of the upper limbs. It is mainly based on the principle of arm extension. During training, the trainee sits on the seat, holds the handles with both hands and pushes down to swing the arms, causing the triceps brachii to contract, thereby achieving the purpose of exercising the triceps brachii. It can effectively stimulate the long head, lateral head and medial head of the triceps brachii, helping to improve muscle lines and enhance muscle strength.

[0003] In the field of three-head push-up trainers, the inventor applied for a utility model patent (application number: 202422185202.X) to solve the problem of trainees having difficulty starting to push down. This patent designs a lever arm adjustment mechanism, which allows the training load to change with the training movement, making it easier for trainees to start pushing down without affecting the subsequent training effect.

[0004] However, while the two swing arms of this patented product can move independently, they struggle to achieve a coordinated effect. Separate movements allow trainees to focus on strengthening their weaker arm, reducing the strength gap between the two arms; coordinated movements, on the other hand, greatly improve the trainee's overall body coordination. Actual production and market feedback have revealed that when using existing triple-head pushdown trainers for coordinated movements, trainees often struggle to ensure both arms exert force simultaneously on the swing arms, and it's difficult to maintain an even distribution of body weight. This can lead to muscle imbalances due to inconsistent training intensity on both sides, resulting in poor synchronous training effects for both arms.

[0005] Therefore, in order to meet the different training needs of trainees and further improve the training effect, the inventors proposed a three-headed press-down training device that can switch between two training modes, linkage and separation, and can realize the change of lever arm. Utility Model Content

[0006] To address the problems in the background art, this utility model proposes a three-head downlift training device, including a frame, a seat plate mounted on the frame, and two swing arms respectively hinged to the frame. The two swing arms are located on both sides of the seat plate. One end of each swing arm near the seat plate is provided with a handle, and the other end of the swing arm is provided with a barbell shaft for placing barbell plates. A connecting mechanism for connecting / separating the swing arms is provided between the two swing arms.

[0007] Preferably, the connecting mechanism includes a first sleeve, a second sleeve, and a connecting pin. The first sleeve is fixedly connected to a swing arm, and the second sleeve is fixedly connected to another swing arm. The first sleeve and the second sleeve are coaxially arranged. An adjustment groove is provided on the side wall of the first sleeve. The connecting pin is movably disposed inside the first sleeve. An adjustment handle is fixed on the side wall of the connecting pin. The adjustment handle extends to the outside of the first sleeve through the adjustment groove.

[0008] When the adjusting handle is located at the end of the adjusting groove near the second sleeve, the end of the connecting pin near the second sleeve is inserted into the second sleeve. When the adjusting handle is located at the end of the adjusting groove away from the second sleeve, the end of the connecting pin away from the second sleeve is located outside the second sleeve.

[0009] Preferably, the diameter of the connecting pin near the second sleeve is larger than the diameter of the end away from the second sleeve, the inner diameter of the first sleeve away from the second sleeve matches the diameter of the connecting pin away from the second sleeve, and a return spring is sleeved on the outer wall of the smaller diameter end of the connecting pin, the return spring being located inside the end of the first sleeve away from the second sleeve;

[0010] The adjusting groove includes two slots, which together form an L-shaped adjusting groove. One slot is arranged along the axial direction of the first sleeve, and the other slot is arranged along the circumference of the first sleeve. The slot arranged along the circumference of the first sleeve is located at the end of the other slot that is away from the second sleeve.

[0011] Preferably, the end of the swing arm away from the seat plate is hinged to an adjusting arm, the barbell shaft is fixed on the adjusting arm, and the hinge point between the swing arm and the frame is located between the adjusting arm and the handle; one end of the adjusting rod is hinged to the frame, and the other end of the adjusting rod is hinged to the adjusting arm.

[0012] Preferably, the bottom end of the adjusting arm is hinged to the swing arm, the barbell shaft is fixed to the top of the adjusting arm, the hinge point between the adjusting rod and the adjusting arm is located between the swing arm and the barbell shaft, and the hinge point between the adjusting rod and the frame is located above the hinge point between the swing arm and the frame.

[0013] Preferably, a vertical pole is fixed to one end of the frame away from the seat plate, and at least one barbell placement shaft is fixed to the side of the vertical pole away from the seat plate, the barbell placement shaft being located between the two swing arms.

[0014] Preferably, a rotating sleeve is fixed at one end of the swing arm near the seat plate, one end of the handle is rotatably disposed in the rotating sleeve, the other end of the handle extends towards the seat plate, and the end of the handle near the seat plate is not coaxial with the end of the handle located in the rotating sleeve.

[0015] The handle is threaded to one end of the rotating sleeve with a limiting bolt, and the rotating sleeve has an adjustment groove along the circumferential direction, with the limiting bolt located in the adjustment groove.

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

[0017] This invention enables the separation or connection of two swing arms via a connecting mechanism. When the two swing arms are separated, they can move independently, allowing the trainee to focus on training the weaker arm based on their own situation. When the two swing arms are connected, they can move synchronously, allowing the trainee to train both arms in a balanced way, ensuring balanced muscle development in both arms. Furthermore, when the two swing arms move synchronously, the trainee's center of gravity is distributed more evenly, leading to better control of posture and movement trajectory, ensuring accuracy and standardization of training movements. The trainee can adjust the connection relationship between the two swing arms as needed to meet different training requirements, resulting in good training effects. The swing arms, adjusting arm, and adjusting lever of this invention constitute a lever arm adjustment mechanism, which can change the lever arm length according to the trainee's movements. This makes it easier for the trainee to initiate downward pressure while ensuring the load meets training needs. The change in lever arm during movement also changes the degree of muscle stimulation during training, resulting in better training effects, conforming to the principles of exercise and fitness, and ensuring human safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the present invention.

[0020] Figure 3 This is a schematic diagram of the overall structure of the present invention after the foot pedal is concealed;

[0021] Figure 4 This is a cross-sectional view of the connecting mechanism of this utility model.

[0022] Labels in the diagram: 1. Frame; 2. Adjusting rod; 3. Seat plate; 4. Swing arm; 5. Handle; 6. Adjusting arm; 7. Barbell shaft; 8. First support plate; 9. Second support plate; 10. First sleeve; 11. Second sleeve; 12. Connecting pin; 13. Adjusting groove; 14. Adjusting handle; 15. Return spring; 16. Upright pole; 17. Barbell placement shaft; 18. Rotating sleeve; 19. Limiting bolt; 20. Synchronizing tube; 21. T-shaped grip; 22. Buffer block; 23. Foot pedal; 24. First adjusting plate; 25. First elastic pin; 26. First adjusting hole; 27. Slide plate; 28. Fixing plate; 29. ​​Second elastic pin; 30. Second adjusting plate; 31. Connecting rod; 32. Leg press roller; 33. Third elastic pin; 34. Front handle; 35. Second adjusting hole; 36. Slide rod; 37. Third support plate. Detailed Implementation

[0023] To make this utility model clearer and more understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one of the implementation methods and do not represent all embodiments.

[0024] In this article, terms such as "inner," "outer," "upper," "lower," "horizontal," and "vertical" are established based on the positional relationships shown in the attached drawings. Depending on the attached drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as absolute limitations on the scope of protection.

[0025] Combined with appendix Figure 1 -Appendix Figure 4 The three-head downlift trainer includes a frame 1, a seat plate 3 mounted on the frame 1, and two swing arms 4 respectively hinged to the frame 1. The two swing arms 4 are located on both sides of the seat plate 3. The end of each swing arm 4 near the seat plate 3 is provided with a handle 5, and the other end of each swing arm 4 is provided with a barbell shaft 7 for placing barbell plates. The end of each swing arm 4 away from the seat plate 3 is hinged to an adjusting arm 6. The bottom end of the adjusting arm 6 is hinged to the swing arm 4, and the barbell shaft 7 is fixed to the top of the adjusting arm 6. The hinge point between the swing arm 4 and the frame 1 is located between the adjusting arm 6 and the handle 5. One end of the adjusting rod 2 is hinged to the frame 1, and the other end of the adjusting rod 2 is hinged to the adjusting arm 6. The hinge point between the adjusting rod 2 and the adjusting arm 6 is located between the swing arm 4 and the barbell shaft 7. The hinge point between the adjusting rod 2 and the frame 1 is located above the hinge point between the swing arm 4 and the frame 1.

[0026] A connecting mechanism for connecting / separating the two swing arms 4 is provided between them. The connecting mechanism includes a first sleeve 10, a second sleeve 11, and a connecting pin 12. The first sleeve 10 is fixedly connected to one swing arm 4, and the second sleeve 11 is fixedly connected to the other swing arm 4. The first sleeve 10 and the second sleeve 11 are coaxially arranged. An adjustment groove 13 is provided on the side wall of the first sleeve 10. The connecting pin 12 is movably disposed inside the first sleeve 10. An adjustment handle 14 is fixed on the side wall of the connecting pin 12. The adjustment handle 14 extends to the outside of the first sleeve 10 through the adjustment groove 13.

[0027] When the adjusting handle 14 is located at the end of the adjusting groove 13 near the second sleeve 11, the end of the connecting pin 12 near the second sleeve 11 is inserted into the second sleeve 11. When the adjusting handle 14 is located at the end of the adjusting groove 13 away from the second sleeve 11, the end of the connecting pin 12 away from the second sleeve 11 is outside the second sleeve 11. By inserting or disengaging the connecting pin 12 from the second sleeve 11, the two swing arms 4 are connected or separated, thereby achieving the linkage or separation effect of the swing arms 4. The movement of the connecting pin 12 is achieved by moving the adjusting handle 14.

[0028] Specifically, the diameter of the connecting pin 12 near the second sleeve 11 is larger than the diameter of the end away from the second sleeve 11. The inner diameter of the end of the first sleeve 10 away from the second sleeve 11 matches the diameter of the connecting pin 12 away from the second sleeve 11. The inner diameter of the end of the first sleeve 10 near the second sleeve 11 matches the diameter of the connecting pin 12 near the second sleeve 11. A return spring 15 is sleeved on the outer wall of the small diameter end of the connecting pin 12. The return spring 15 is located inside the end of the first sleeve 10 away from the second sleeve 11.

[0029] The adjustment groove 13 includes two slots, which together form an L-shaped adjustment groove 13. One slot is arranged along the axial direction of the first sleeve 10, and the other slot is arranged along the circumferential direction of the first sleeve 10. The slot arranged along the circumferential direction of the first sleeve 10 is located at the end of the other slot that is away from the second sleeve 11.

[0030] The slot along the axial direction of the first sleeve 10 is the first slot, and the slot along the circumferential direction of the first sleeve 10 is the second slot. When the adjusting handle 14 is located at the end of the first slot near the second sleeve 11, the end of the connecting pin 12 near the second sleeve 11 is inserted into the second sleeve 11. At this time, the return spring 15 is in a natural or compressed state. The return spring 15 fixes the connecting pin 12 relative to the first sleeve 10 and the second sleeve 11, improving the stability of the connection between the two swing arms 4. When it is necessary to separate the two swing arms 4, the user moves the adjusting handle 14 to the end of the first slot away from the second sleeve 11. At this time, the connecting pin 12 disengages from the second sleeve 11, and the two swing arms 4 separate from each other. At this time, the return spring 15 is also compressed. In order to prevent the elastic force of the return spring 15 from driving the connecting pin 12 to return to its original position and re-inserting into the second sleeve 11, the user only needs to rotate the adjusting handle 14 again so that the adjusting handle 14 enters the second slot. The second slot can limit the adjusting handle 14, so that the return spring 15 cannot drive the adjusting handle 14 to move.

[0031] More specifically, synchronizing tubes 20 are fixed to opposite sides of the two swing arms 4, and the first sleeve 10 and the second sleeve 11 are fixed to the close ends of the two synchronizing tubes 20.

[0032] Specifically, a vertical rod 16 is fixed to one end of the frame 1 away from the seat plate 3. At least one barbell placement shaft 17 is fixed to the side of the vertical rod 16 away from the seat plate 3, and the barbell placement shaft 17 is located between the two swing arms 4. The barbell placement shaft 17 is used to place barbell plates that do not participate in the application of training load, thereby improving the neatness of barbell plate placement and the convenience of barbell plate retrieval.

[0033] Specifically, the swing arm 4 is fixed with a rotating sleeve 18 at one end near the seat plate 3, one end of the handle 5 is rotatably disposed in the rotating sleeve 18, the other end of the handle 5 extends towards the seat plate 3, and the end of the handle 5 near the seat plate 3 is not coaxial with the end of the handle 5 located in the rotating sleeve 18.

[0034] One end of the handle 5 located in the rotating sleeve 18 is threadedly connected to a limiting bolt 19. An adjustment groove is provided circumferentially on the rotating sleeve 18, and the limiting bolt 19 is located in the adjustment groove. Since the end of the handle 5 near the seat plate 3 is not coaxial with the end of the handle 5 located in the rotating sleeve 18, the distance between the two handles 5 near the seat plate 3 will change when the handle 5 is rotated, thereby realizing the adjustment of the distance between the two handles 5, which is suitable for people of different body types.

[0035] More specifically, one end of the handle 5 is rotatably mounted in the rotating sleeve 18 via a bearing. The handle 5 has a threaded hole that matches the limiting bolt at a position corresponding to the adjustment groove. The axial direction of the threaded hole is consistent with the radial direction of the rotating sleeve 18. The limiting bolt 19 passes through the adjustment groove and is threaded into the threaded hole. Through the cooperation of the adjustment groove and the limiting bolt 19, the handle 5 can be limited to prevent it from detaching from the rotating sleeve 18.

[0036] More specifically, a T-shaped grip 21 is fixed to one end of the handle 5 near the seat plate 3. The T-shaped grip 21 can improve the stability and comfort of the trainee holding the handle 5.

[0037] Specifically, the bottom of one end of the swing arm 4 with the adjusting arm 6 is provided with a buffer block 22. The buffer block 22 buffers the collision between the swing arm 4 and the frame 1, preventing the swing arm 4 from being damaged by direct collision with the frame 1. The buffer block 22 can be made of rubber.

[0038] A foot pedal 23 is fixed on the frame 1, and the foot pedal 23 is located at the end of the frame 1 where the seat plate 3 is located.

[0039] More specifically, the seat plate 3 can be connected to the frame 1 through a height adjustment mechanism and a horizontal displacement adjustment mechanism. The height of the seat plate 3 can be adjusted by the height adjustment mechanism, and the distance between the seat plate 3 and the swing arm 4 can be adjusted by the horizontal displacement adjustment mechanism to meet the usage needs of trainees of different body types and improve training comfort.

[0040] The height adjustment mechanism and the horizontal displacement adjustment mechanism can be designed as follows: The horizontal displacement adjustment mechanism includes a first elastic pin 25 and a first adjustment plate 24. The first adjustment plate 24 is fixed on the frame 1 and has multiple first adjustment holes 26. The frame 1 has a sliding plate 27 that is slidable relative to the first adjustment plate 24. A fixed plate 28 and a first support plate 8 are fixed on the sliding plate 27. The seat plate 3 is disposed on the first support plate 8, and the first elastic pin 25 is disposed on the fixed plate 28. The positions of the first elastic pin 25 and the first adjustment holes 26 correspond. When the first elastic pin 25 is inserted into the first adjustment hole 26, the first support plate 8 is fixed relative to the frame 1, thereby fixing the horizontal position of the seat plate 3. When the first elastic pin 25 is disengaged from the first adjustment hole 26, the first support plate 8 is slidable relative to the frame 1, and the first support plate 8 can be moved to adjust the horizontal position of the seat plate 3.

[0041] The height adjustment mechanism includes a connecting rod 31, a second elastic pin 29, and a second adjusting plate 30. The second adjusting plate 30 is fixed to the first support plate 8 and has multiple second adjusting holes 35 along the height direction. The second elastic pin 29 is located at the bottom of the seat plate 3, and the second elastic pin 29 corresponds to the position of the second adjusting hole 35. One end of the connecting rod 31 is hinged to the seat plate 3, and the other end of the connecting rod 31 is hinged to the first support plate 8. When the second elastic pin 29 is inserted into the second adjusting hole 35, the seat plate 3 is fixed relative to the first support plate 8, thereby fixing the seat plate 3. When the second elastic pin 29 is disengaged from the second adjusting hole 35, the seat plate 3 can be moved up and down by the connecting rod 31, thus moving the seat plate 3 and adjusting its height.

[0042] The structure of the height adjustment mechanism and the horizontal displacement mechanism is not limited to the above-mentioned forms. As long as they can adjust the height and horizontal position of the seat plate 3, they will not be described in detail here.

[0043] Specifically, a second support plate 9 is fixed to the side of the first support plate 8 away from the seat plate 3. The top of the second support plate 9 is equipped with a leg-pressing roller 32 for warm-up. More specifically, a sliding rod 36 is provided within the second support plate 9, slidable relative to the second support plate 9. The top of the sliding rod 36 extends out of the second support plate 9 to connect with the leg-pressing roller 32. The sliding rod 36 has multiple third adjustment holes along its height direction, and the second support plate 9 has third elastic pins 33 corresponding to the positions of the third adjustment holes. When the third elastic pins 33 are inserted into the third adjustment holes, the sliding rod 36 is fixed relative to the second support plate 9, thereby fixing the position of the leg-pressing roller 32. When the third elastic pins 33 are disengaged from the third adjustment holes, the sliding rod 36 is slidable relative to the second support plate 9, allowing the leg-pressing roller 32 to be moved up and down, adjusting its height to meet the needs of different trainees. The height adjustment method of the leg-pressing roller 32 is not limited to the above-described form.

[0044] A third support plate 37 is fixed on the side of the second support plate 9 away from the seat plate 3. A front handle 34 is fixed on the third support plate 37. When adjusting the horizontal position of the seat plate 3, the front handle 34 can be held to push and pull, moving the seat plate 3, which is more convenient and less strenuous.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will be able to make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-head push-down trainer characterized by: The utility model relates to a kind of gymnasiums, including rack (1), seat plate (3) installed on rack (1) and two respectively with rack (1) articulated swing arm (4), two described swing arm (4) are located at the both sides of seat plate (3), and the end of swing arm (4) close to seat plate (3) is equipped with handle (5), swing arm (4) other end is equipped with the barbell shaft (7) for placing barbell piece, and connecting mechanism for connecting / disconnecting swing arm (4) is equipped between two described swing arm (4).

2. The triple head down press trainer of claim 1, wherein: The connecting mechanism includes a first sleeve (10), a second sleeve (11), and a connecting pin (12). The first sleeve (10) is fixedly connected with one swing arm (4), and the second sleeve (11) is fixedly connected with the other swing arm (4). The first sleeve (10) and the second sleeve (11) are coaxially arranged. An adjusting groove (13) is formed in the side wall of the first sleeve (10). The connecting pin (12) is movably arranged in the first sleeve (10). An adjusting handle (14) is fixedly arranged on the side wall of the connecting pin (12). The adjusting handle (14) extends out of the first sleeve (10) through the adjusting groove (13). When the adjusting handle (14) is located at one end of the adjusting groove (13) close to the second sleeve (11), one end of the connecting pin (12) close to the second sleeve (11) is inserted into the second sleeve (11). When the adjusting handle (14) is located at the other end of the adjusting groove (13) away from the second sleeve (11), the other end of the connecting pin (12) away from the second sleeve (11) is located outside the second sleeve (11).

3. The triple head down press trainer of claim 2, wherein: The diameter of one end of the connecting pin (12) close to the second sleeve (11) is greater than the diameter of the other end of the connecting pin (12) away from the second sleeve (11). The inner diameter of one end of the first sleeve (10) away from the second sleeve (11) matches the diameter of the other end of the connecting pin (12) away from the second sleeve (11). The inner diameter of one end of the first sleeve (10) close to the second sleeve (11) matches the diameter of one end of the connecting pin (12) close to the second sleeve (11). An elastic return spring (15) is arranged on the outer wall of the small-diameter end of the connecting pin (12). The elastic return spring (15) is located in one end of the first sleeve (10) away from the second sleeve (11). The adjusting groove (13) includes two grooves. The two grooves form an L-shaped adjusting groove (13). One of the grooves is arranged along the axial direction of the first sleeve (10), and the other groove is arranged along the circumferential direction of the first sleeve (10). The groove arranged along the circumferential direction of the first sleeve (10) is arranged at the end of the other groove away from the second sleeve (11).

4. The triple head down press trainer of claim 1, wherein: One end of the swing arm (4) away from the seat plate (3) is hingedly connected with an adjusting arm (6). The barbell shaft (7) is fixedly arranged on the adjusting arm (6). The hinge point of the swing arm (4) and the rack (1) is located between the adjusting arm (6) and the handle (5). One end of the adjusting pull rod (2) is hingedly connected with the rack (1), and the other end of the adjusting pull rod (2) is hingedly connected with the adjusting arm (6).

5. The triple head down press trainer of claim 4, wherein: The adjusting arm (6) is hingedly connected to the swing arm (4) at the bottom end, the barbell shaft (7) is fixed to the top of the adjusting arm (6), the hingedly connected point of the adjusting pull rod (2) and the adjusting arm (6) is located between the swing arm (4) and the barbell shaft (7), and the hingedly connected point of the adjusting pull rod (2) and the rack (1) is located above the hingedly connected point of the swing arm (4) and the rack (1).

6. The triple head down press trainer of claim 1, wherein: The rack (1) is fixed with a vertical rod (16) at one end away from the seat plate (3), at least one barbell placing shaft (17) is fixed to the vertical rod (16) at a side away from the seat plate (3), and the barbell placing shaft (17) is located between the two swing arms (4).

7. The triple head down press trainer of claim 1, wherein: The swing arm (4) is fixed with a rotating sleeve (18) at one end close to the seat plate (3), one end of the handle (5) is rotatably arranged in the rotating sleeve (18), the other end of the handle (5) extends towards the seat plate (3), and the one end of the handle (5) close to the seat plate (3) is different from the one end of the handle (5) located in the rotating sleeve (18) in the axis; The one end of the handle (5) located in the rotating sleeve (18) is threadedly connected with a limiting bolt (19), and the rotating sleeve (18) is provided with an adjusting groove in the circumferential direction, and the limiting bolt (19) is located in the adjusting groove.

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