Power assist mechanism for exercise equipment

Abstract

The application discloses a strength assisting mechanism of a fitness equipment, and relates to the technical field of fitness equipment, which comprises a supporting frame, a strength assisting mechanism is fixedly installed at the top rear side of the supporting frame, a sliding seat plate is slidably connected to the inner surface rear side of the supporting frame, a sliding pedal is slidably connected to the inner surface front side of the supporting frame, and a foot fixer is fixedly installed at the top of the sliding pedal. When a user performs sit-ups, the user will sit on the sliding seat plate. When the user lies down, the sponge pad I on the supporting plate will be pressed, and the rotating column can drive the volute spring to contract through the rotating rod. When the user sits up, the rotating rod can provide a pushing assisting force to the back of the user through the supporting plate and the sponge pad I by the elastic force of the volute spring, so that the user can conveniently perform sit-up training. The position of the supporting plate pushed by the limiting mechanism can be limited, so that the sit-up training is more comfortable and efficient.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, specifically to a force-assist mechanism for fitness equipment. Background Technology

[0002] The force assist mechanism of fitness equipment is a mechanical or electronic device designed to help users reduce the burden and improve training results during exercise, helping users to better achieve their fitness goals and making each workout more efficient, safe, and enjoyable.

[0003] The existing technology has the following problems: When performing sit-ups, users are often required to rely entirely on their own strength to complete the movement. This not only places extremely high demands on the core muscles but also easily leads to sports injuries, especially excessive pressure on the lower back and neck. To solve this problem, this invention proposes a power assist mechanism for a fitness device used for sit-ups, aiming to make sit-up training more scientific, comfortable, and efficient through intelligent mechanical assistance. Summary of the Invention

[0004] This invention provides a force-assist mechanism for fitness equipment to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A power assist mechanism for fitness equipment includes a support frame, an assist mechanism fixedly installed on the top rear side of the support frame, a sliding seat plate slidably connected to the rear side of the inner surface of the support frame, a sliding pedal slidably connected to the front side of the inner surface of the support frame, a foot holder fixedly installed on the top of the sliding pedal, and connecting grooves provided on both the left and right sides of the inner wall of the support frame.

[0006] The assist mechanism includes two connecting columns, which are fixedly connected to the top left and right rear sides of the support frame, respectively. The top of each connecting column has a rotating groove, and a rotating column is rotatably connected inside the rotating groove. A spiral spring is fixedly connected to the middle of the opposite face of each of the two rotating columns. The end of the spiral spring away from the rotating column is fixedly connected to the inner wall of the rotating groove. A rotating rod is fixedly connected to the top rear side of the outer surface of each of the two rotating columns. A support plate is fixedly connected to the rear end of each of the two rotating rods. A sponge pad is fixedly connected to the middle of the outer surface of the support plate. A limit mechanism is provided on the inner wall of the rotating groove.

[0007] The foot fixation device includes a connecting sleeve, which is fixedly connected to the top of the support frame. A telescopic sliding column is slidably inserted into the top of the inner surface of the connecting sleeve. Connecting rods are fixedly connected to the left and right sides of the outer surfaces of the connecting sleeve and the telescopic sliding column. A sponge pad is fixedly connected to the outer surface of the connecting rod.

[0008] A further improvement of the technical solution of the present invention is that: the limiting mechanism includes a sliding column, two sliding columns are respectively movably connected to the opposite sides of two connecting columns, the connecting column has a movable groove inside, one end of the sliding column near the connecting column passes through the interior of the movable groove and is fixedly connected to a top spring, and one end of the sliding column near the top spring is fixedly connected to a U-shaped rotating frame.

[0009] A further improvement of the technical solution of the present invention is that: both ends of the U-shaped rotating frame penetrate into the interior of the rotating groove and are fixedly connected to an annular rotating plate; a limit stop post is fixedly connected to the front of the side of the annular rotating plate away from the U-shaped rotating frame; positioning posts are fixedly connected to both the front and rear sides of the side of the U-shaped rotating frame away from the annular rotating plate; a plurality of positioning grooves are arranged in annular array on the inner wall of the movable groove; and the end of the positioning post away from the U-shaped rotating frame penetrates into the interior of the positioning groove.

[0010] A further improvement of the technical solution of the present invention is that: the sliding seat plate includes a support plate, and connecting slide plates are fixedly connected to both the left and right sides of the support plate. The connecting slide plates are slidably connected inside the connecting groove, and sliding wheels that pass through vertically are movably connected to both the front and rear sides of the interior of the connecting slide plates.

[0011] A further improvement of the technical solution of the present invention is that: a knob is movably connected to the lower rear end of the support plate, a bidirectional screw is fixedly connected to the front end of the knob, the bidirectional screw is movably connected to the bottom of the support plate, and threaded sliders are threadedly connected to both the front and rear sides of the outer surface of the bidirectional screw, and the upper surface of the threaded sliders is slidably connected to the lower surface of the support plate.

[0012] A further improvement of the technical solution of the present invention is that: push rods are movably connected to both the left and right sides of the threaded slider, and a sliding push plate is movably connected to the end of the two push rods on the same side away from the threaded slider; a sliding groove is provided in the middle of the side of the connecting slide away from the support plate; the sliding push plate is slidably connected to the lower surface of the support plate; the end of the sliding push plate away from the support plate passes through the interior of the sliding groove and is fixedly connected to a fixed pressure plate; the outer surface of the fixed pressure plate is slidably connected to the inner surface of the sliding groove.

[0013] A further improvement of the technical solution of the present invention is that: the telescopic sliding column includes a lifting column, the lifting column is slidably inserted above the inner surface of the connecting sleeve, the top of the lifting column is movably connected to a second knob, and the bottom of the second knob is fixedly connected to a transmission screw.

[0014] A further improvement of the technical solution of the present invention is that: a square sliding groove is provided at the bottom end of the lifting column, the bottom end of the transmission screw passes through the interior of the square sliding groove and a square column is threadedly connected to its outer surface, the outer surface of the square column is slidably connected to the inner surface of the square sliding groove, the bottom end of the square column is fixedly connected to the lower surface of the inner wall of the connecting sleeve, and limit sliding grooves are provided on both the front and rear sides of the outer surface of the square column, and limit sliders are fixedly connected to the lower sides of both the front and rear sides of the inner wall of the square sliding groove, and the limit sliders are slidably connected inside the limit sliding groove.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: This invention provides a force-assist mechanism for fitness equipment. Through the cooperation of a connecting column, a rotating column, a spiral spring, a rotating rod, a support plate, a sponge pad, and a limiting mechanism, when the user performs sit-ups, they sit on the sliding seat. When the user lies down, they compress the sponge pad on the support plate. The rotating rod causes the rotating column to drive the spiral spring to contract. Thus, when the user sits up, the elasticity of the spiral spring allows the rotating rod to provide a pushing force to the user's back through the support plate and the sponge pad, making sit-up training more convenient. The limiting mechanism restricts the pushing position of the support plate and the sponge pad, making sit-up training more scientific, comfortable, and efficient.

[0016] This invention provides a power assist mechanism for fitness equipment. Through the cooperation of a support plate, connecting slide plate, sliding wheel, knob one, bidirectional screw, threaded slider, push rod, sliding push plate, and fixed pressure plate, the position of the sliding seat can be adjusted by the sliding of the connecting slide plate and sliding wheel in the connecting groove, making it convenient for users of different heights. At the same time, by rotating knob one, the bidirectional screw can drive the threaded slide plate to slide, which in turn can push the sliding push plate to slide through the push rod, causing the fixed pressure plate to press against the inner wall of the connecting groove, thereby fixing the position of the sliding seat, making the use of the power assist mechanism for sit-ups more convenient.

[0017] This invention provides a power assist mechanism for fitness equipment. Through the cooperation of a connecting sleeve, a lifting column, a second knob, a transmission screw, a square column, a limiting slide groove, a limiting slider, a connecting rod, and a second sponge pad, the user can fix their feet between the connecting rod and the second sponge pad while performing sit-ups, making sit-up training more comfortable. Simultaneously, by rotating the second knob, the transmission screw and the square column's threaded transmission drive the lifting column to rise and fall along the connecting sleeve, thereby adjusting the position of the top connecting rod and the second sponge pad. This facilitates use by different users and makes sit-up training more convenient for various individuals. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the assist mechanism of the present invention; Figure 3 This is an enlarged structural schematic diagram of the assist mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the sliding seat plate of the present invention; Figure 5 This is a schematic diagram of the foot fixation device of the present invention; Figure 6 This is a cross-sectional structural diagram of the telescopic sliding column of the present invention.

[0019] In the diagram: 1. Support frame; 11. Connecting slide; 2. Auxiliary mechanism; 21. Connecting column; 22. Rotating column; 23. Spiral spring; 24. Rotating rod; 25. Support plate; 26. Sponge pad one; 27. Limiting mechanism; 271. Sliding column; 272. Tightening spring; 273. U-shaped rotating frame; 274. Annular rotating plate; 275. Limiting stop; 276. Positioning column; 3. Sliding seat plate; 31. Support plate; 32. Connecting slide 33. Plate; 34. Sliding wheel; 35. Knob 1; 36. Two-way screw; 37. Threaded slider; 38. Push rod; 39. Sliding push plate; 4. Fixed pressure plate; 50. Sliding pedal; 51. Foot retainer; 52. Connecting sleeve; 53. Telescopic slide column; 54. Lifting column; 55. Knob 2; 56. Transmission screw; 57. Square column; 58. Limiting slide groove; 59. Limiting slider; 50. Connecting rod; 51. Sponge pad 2. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to embodiments: Example

[0021] like Figure 1-3As shown, this invention provides a power-assisting mechanism for fitness equipment, including a support frame 1. A power-assisting mechanism 2 is fixedly installed on the rear top of the support frame 1. A sliding seat plate 3 is slidably connected to the rear inner surface of the support frame 1, and a sliding pedal 4 is slidably connected to the front inner surface of the support frame 1. The sliding pedal 4 and the sliding seat plate 3 have the same structure. A foot retainer 5 is fixedly installed on the top of the sliding pedal 4. Connecting grooves 11 are provided on both the left and right sides of the inner wall of the support frame 1. The power-assisting mechanism 2 includes two connecting columns 21, which are fixedly connected to the rear left and right sides of the top of the support frame 1, respectively. A rotating groove is provided on the top of the connecting columns 21, and a rotating column 22 is rotatably connected inside the rotating groove. A spiral spring 23 is fixedly connected to the middle of the opposite face of each of the two rotating columns 22. The end of the spiral spring 23 away from the rotating column 22 is fixedly connected to the inner wall of the rotating groove. A rotating rod 24 is fixedly connected to the rear top of the outer surface of each of the two rotating columns 22, and a support plate 25 is fixedly connected to the rear end of each of the two rotating rods 24. A sponge pad 26 is fixedly connected to the middle of the outer surface of the support plate 25. A limiting mechanism 27 is provided on the inner wall of the rotating groove. The limiting mechanism 27 includes a sliding column 271. Two sliding columns 271 are movably connected to the opposite sides of two connecting columns 21. A movable groove is opened inside the connecting column 21. One end of the sliding column 271 near the connecting column 21 passes through the interior of the movable groove and is fixedly connected to a top spring 272. A U-shaped rotating frame 273 is fixedly connected to one end of the sliding column 271 near the top spring 272. Both ends of the U-shaped rotating frame 273 pass through the interior of the rotating groove and are fixedly connected to an annular rotating plate 274. A limiting stop 275 is fixedly connected to the front of the side of the annular rotating plate 274 away from the U-shaped rotating frame 273. Positioning columns 276 are fixedly connected to both the front and rear sides of the side of the U-shaped rotating frame 273 away from the annular rotating plate 274. Several positioning grooves are opened in an annular array on the inner wall of the movable groove. One end of the positioning column 276 away from the U-shaped rotating frame 273 passes through the interior of the positioning groove.

[0022] In this embodiment, when performing sit-ups, the user sits on the sliding seat 3. When the user lies down, the sponge pad 26 on the support plate 25 is compressed. The rotating rod 24 causes the rotating column 22 to drive the spiral spring 23 to contract. Thus, when the user sits up, the elasticity of the spiral spring 23 allows the rotating rod 24 to provide a pushing force to the user's back through the support plate 25 and the sponge pad 26, making sit-up training more convenient. Furthermore, by pressing the sliding column 271, the U-shaped rotating frame 273 can move... The movable positioning column 276 slides out from the inside of the positioning groove, so that the U-shaped rotating frame 273 and the sliding column 271 are no longer restricted. This makes it easier to drive the U-shaped rotating frame 273 to rotate via the sliding column 271, and drive the limiting stop column 275 to rotate via the annular rotating plate 274. Then, by the pushing action of the tightening spring 272, the positioning column 276 can be locked into the inside of another positioning groove, which can fix the position of the limiting stop column 275. This can limit the pushing position of the support plate 25 and the sponge pad 26, making sit-up training more scientific, comfortable and efficient. Example

[0023] like Figure 4 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the sliding seat plate 3 includes a support plate 31, with connecting slide plates 32 fixedly connected to both the left and right sides of the support plate 31. The connecting slide plates 32 are slidably connected inside the connecting groove 11. Sliding wheels 33, extending vertically, are movably connected to both the front and rear sides of the interior of the connecting slide plates 32. A knob 34 is movably connected to the lower rear end of the support plate 31. A bidirectional screw 35 is fixedly connected to the front end of the knob 34. The bidirectional screw 35 is movably connected to the bottom of the support plate 31. Threaded screws are threaded onto both the front and rear sides of the outer surface of the bidirectional screw 35. The upper surface of the threaded slider 36 is slidably connected to the lower surface of the support plate 31. Push rods 37 are movably connected to both sides of the threaded slider 36. A sliding push plate 38 is movably connected to the end of the two push rods 37 on the same side away from the threaded slider 36. A sliding groove is opened in the middle of the side of the connecting slide plate 32 away from the support plate 31. The sliding push plate 38 is slidably connected to the lower surface of the support plate 31. The end of the sliding push plate 38 away from the support plate 31 passes through the interior of the sliding groove and is fixedly connected to a fixing pressure plate 39. The outer surface of the fixing pressure plate 39 is slidably connected to the inner surface of the sliding groove.

[0024] In this embodiment, by sliding the connecting slide plate 32 and the sliding wheel 33 in the connecting groove 11, the position of the sliding seat plate 3 can be adjusted, making it convenient for users of different heights to use. At the same time, by rotating the knob 34, the bidirectional screw 35 can drive the threaded slide 36 to slide at the bottom of the support plate 31, thereby pushing the sliding push plate 38 to slide at the bottom of the support plate 31 through the push rod 37, thereby pushing the fixed pressure plate 39 and pressing the inner wall of the connecting groove 11, thereby fixing the position of the sliding seat plate 3, making the use of the sit-up assist mechanism more convenient. Example

[0025] like Figure 5-6 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the foot fixator 5 includes a connecting sleeve 51, which is fixedly connected to the top of the support frame 1. A telescopic sliding column 52 is slidably inserted into the top of the inner surface of the connecting sleeve 51. Connecting rods 53 are fixedly connected to the left and right sides of the outer surfaces of the connecting sleeve 51 and the telescopic sliding column 52. A second sponge pad 54 is fixedly connected to the outer surface of the connecting rod 53. The telescopic sliding column 52 includes a lifting column 521, which is slidably inserted into the upper part of the inner surface of the connecting sleeve 51. A second knob 522 is movably connected to the top of the lifting column 521. The bottom of the second button 522 is fixedly connected to a transmission screw 523. The bottom end of the lifting column 521 is provided with a square slide groove. The bottom end of the transmission screw 523 passes through the interior of the square slide groove and the outer surface is threadedly connected to a square column 524. The outer surface of the square column 524 is slidably connected to the inner surface of the square slide groove. The bottom end of the square column 524 is fixedly connected to the lower surface of the inner wall of the connecting sleeve 51. Limiting slide grooves 525 are provided on both the front and rear sides of the outer surface of the square column 524. Limiting sliders 526 are fixedly connected to the lower front and rear sides of the inner wall of the square slide groove. The limiting sliders 526 are slidably connected inside the limiting slide grooves 525.

[0026] In this embodiment, while performing sit-ups, the user can fix their feet between the connecting rod 53 and the second sponge pad 54, making sit-up training more comfortable. Simultaneously, rotating the second knob 522 drives the transmission screw 523 to rotate, which, through the threaded transmission with the square column 524, causes the lifting column 521 to rise and fall along the square column 524. This allows adjustment of the position of the top connecting rod 53 and the second sponge pad 54. Furthermore, the sliding of the limiting slider 526 within the limiting groove 525 restricts the lifting range of the lifting column 521, making it convenient for different users to perform sit-ups.

[0027] The working principle of the force-assisted mechanism of this fitness equipment will be explained in detail below.

[0028] like Figure 1-6 As shown, when performing sit-ups, the user sits on the sliding seat 3. The position of the sliding seat 3 can be adjusted by sliding the connecting slide plate 32 and the sliding wheel 33 within the connecting groove 11, facilitating use by users of different heights. Simultaneously, rotating the knob 34 causes the bidirectional screw 35 to drive the threaded slider 36 to slide, which in turn pushes the sliding push plate 38 via the push rod 37. This allows the fixing plate 39 to press against the inner wall of the connecting groove 11, thus fixing the position of the sliding seat 3. The user can then place their feet between the two sponge pads 54 and rotate the knob 522. The screw 523 drives the lifting column 521 to slide up and down via the threaded transmission between the screw 523 and the square column 524, thereby adjusting the position of the top sponge pad 54. This facilitates use by different users. When the user lies down, the sponge pad 26 on the support plate 25 is compressed, and the rotating rod 24 causes the rotating column 22 to drive the spiral spring 23 to contract. When the user sits up, the elasticity of the spiral spring 23 allows the rotating rod 24 to provide a pushing force to the user's back through the support plate 25 and the sponge pad 26, making sit-up training more convenient, scientific, comfortable, and efficient.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A force-assist mechanism for fitness equipment, characterized in that: The support frame (1) is provided with a booster mechanism (2) fixedly installed on the rear top side of the support frame (1), a sliding seat plate (3) is slidably connected to the rear inner surface of the support frame (1), a sliding pedal (4) is slidably connected to the front inner surface of the support frame (1), a foot retainer (5) is fixedly installed on the top of the sliding pedal (4), and connecting grooves (11) are provided on both the left and right sides of the inner wall of the support frame (1). The assist mechanism (2) includes two connecting columns (21), which are fixedly connected to the top left and right rear sides of the support frame (1). The top of the connecting column (21) is provided with a rotating groove, and a rotating column (22) is rotatably connected inside the rotating groove. A spiral spring (23) is fixedly connected to the middle of the opposite face of the two rotating columns (22). The end of the spiral spring (23) away from the rotating column (22) is fixedly connected to the inner wall of the rotating groove. A rotating rod (24) is fixedly connected to the top rear side of the outer surface of the two rotating columns (22). A support plate (25) is fixedly connected to the rear end of the two rotating rods (24). A sponge pad (26) is fixedly connected to the middle of the outer surface of the support plate (25). A limit mechanism (27) is provided on the inner wall of the rotating groove. The foot fixation device (5) includes a connecting sleeve (51), which is fixedly connected to the top of the support frame (1). A telescopic sliding column (52) is slidably inserted into the top of the inner surface of the connecting sleeve (51). Connecting rods (53) are fixedly connected to the left and right sides of the outer surfaces of the connecting sleeve (51) and the telescopic sliding column (52). A sponge pad (54) is fixedly connected to the outer surface of the connecting rod (53). The limiting mechanism (27) includes a sliding column (271), and two sliding columns (271) are movably connected to opposite sides of two connecting columns (21). The connecting column (21) has a movable groove inside. The end of the sliding column (271) near the connecting column (21) passes through the interior of the movable groove and is fixedly connected to a top spring (272). The end of the sliding column (271) near the top spring (272) is fixedly connected to a U-shaped rotating frame (273). Both ends of the U-shaped rotating frame (273) extend into the interior of the rotating groove and are fixedly connected to an annular rotating plate (274). A limit stop (275) is fixedly connected to the front of the side of the annular rotating plate (274) away from the U-shaped rotating frame (273). Positioning posts (276) are fixedly connected to both the front and rear sides of the side of the U-shaped rotating frame (273) away from the annular rotating plate (274). Several positioning grooves are arranged in annular array on the inner wall of the movable groove. The end of the positioning post (276) away from the U-shaped rotating frame (273) extends into the interior of the positioning groove.

2. The force-assisting mechanism of a fitness equipment according to claim 1, characterized in that: The sliding seat plate (3) includes a support plate (31), and connecting slide plates (32) are fixedly connected to both the left and right sides of the support plate (31). The connecting slide plates (32) are slidably connected inside the connecting groove (11). The front and rear sides of the connecting slide plates (32) are movably connected with sliding wheels (33) that pass through vertically.

3. The force-assisting mechanism of a fitness equipment according to claim 2, characterized in that: A knob (34) is movably connected to the lower rear end of the support plate (31). A bidirectional screw (35) is fixedly connected to the front end of the knob (34). The bidirectional screw (35) is movably connected to the bottom of the support plate (31). Threaded sliders (36) are threadedly connected to both the front and rear sides of the outer surface of the bidirectional screw (35). The upper surface of the threaded slider (36) is slidably connected to the lower surface of the support plate (31).

4. The force-assisting mechanism of a fitness equipment according to claim 3, characterized in that: Push rods (37) are movably connected to both sides of the threaded slider (36). A sliding push plate (38) is movably connected to the end of the two push rods (37) on the same side away from the threaded slider (36). A sliding groove is provided in the middle of the side of the connecting slide plate (32) away from the support plate (31). The sliding push plate (38) is slidably connected to the lower surface of the support plate (31). The end of the sliding push plate (38) away from the support plate (31) extends into the interior of the sliding groove and is fixedly connected to a fixing pressure plate (39). The outer surface of the fixing pressure plate (39) is slidably connected to the inner surface of the sliding groove.

5. The force-assisting mechanism of a fitness equipment according to claim 1, characterized in that: The telescopic slide column (52) includes a lifting column (521), which is slidably inserted above the inner surface of the connecting sleeve (51). A knob (522) is movably connected to the top of the lifting column (521), and a transmission screw (523) is fixedly connected to the bottom of the knob (522).

6. The force-assisting mechanism of a fitness equipment according to claim 5, characterized in that: The bottom end of the lifting column (521) is provided with a square sliding groove. The bottom end of the transmission screw (523) passes through the interior of the square sliding groove and the outer surface is threaded with a square column (524). The outer surface of the square column (524) is slidably connected to the inner surface of the square sliding groove. The bottom end of the square column (524) is fixedly connected to the lower surface of the inner wall of the connecting sleeve (51). Limiting sliding grooves (525) are provided on both the front and rear sides of the outer surface of the square column (524). Limiting sliders (526) are fixedly connected to the lower sides of the front and rear sides of the inner wall of the square sliding groove. The limiting sliders (526) are slidably connected inside the limiting sliding grooves (525).

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