A rowing machine for fitness

Abstract

The present invention relates to the technical field of fitness equipment, and discloses a rowing machine for fitness, comprising a rowing machine frame and a damping mechanism, wherein the damping mechanism comprises a frame, a generator, a plurality of transmission wheel groups, and a reel; a pull rope is wound around the reel, and the transmission wheel group comprises a driving wheel and a driven wheel, wherein the reel is coaxially connected to the driving wheel at one end of the frame, and the generator is coaxially connected to the driven wheel at the other end of the frame, and the transmission ratio between the driving wheel and the driven wheel is less than 1. When the reel rotates, the reel drives the driving wheel to rotate, thereby driving the driven wheel to rotate faster, thereby linking the plurality of transmission wheel groups to rotate, and causing the generator to rotate to generate electricity, thereby consuming the generator power to provide resistance. The rowing machine of the present invention reduces space occupation, provides more linear and uniform resistance, improves force application stability, and can simultaneously increase the power generation of the generator to meet the power usage requirements of the entire machine, thereby having the advantage of improving energy saving.

Description

Technical Field

[0001] The present invention relates to the technical field of rowing machines, and more particularly to a rowing machine for fitness. Background Art

[0002] The rowing machine is a fitness machine that's effective for strengthening the muscles of the legs, waist, upper limbs, chest, and back. With each row, the upper limbs, lower limbs, waist, abdomen, and back complete a complete contraction and extension, providing a full-body aerobic workout.

[0003] The most common damping structures used in existing rowing machines are wind resistance, magnetic resistance, and water resistance. While these structures can all achieve better exercise effects through resistance, they also have many drawbacks, the most prominent of which are their large size and complex operation. Specifically:

[0004] (1) The wind resistance structure uses the wind resistance generated by the rotation of the blades as the load on the rope end. However, the layout of the blades not only increases the overall size of the rowing machine, but also makes it noisy. The safety protection structure of the blades also significantly increases the space occupied. More importantly, its operating structure is complex, and the force adjustment requires controlling the swing angle of the blades.

[0005] (2) Magnetic resistance structure, which uses magnetic attraction as a load. Although this structure is simpler than the wind resistance structure, its resistance cannot be adjusted and requires precise layout of magnetic attraction parts. In addition, the magnetic attraction method is difficult to match with the movement, and the magnetic attraction layout cannot be too large, otherwise some users will find it difficult to use. If the magnetic attraction layout is too small, the exercise effect cannot be achieved, so its applicability is poor.

[0006] (3) Water resistance structure: This is the most common method. The user pulls the pull rope by holding the handle, so that the pull rope drives the blades of the rotating module to rotate. The water resistance provides resistance, and the pull rope of the rotating module is rolled up to generate elastic force. When the user stops exerting force, the elastic force of the elastic rope drives the rotating module to rotate counterclockwise, driving the blades and the pull rope back to the starting position. This structure has many parts, and parts such as the bucket occupy a huge amount of space. It is also dangerous and noisy.

[0007] Moreover, the resistance transmission process provided by the above three types of movements is prone to fluctuating, resulting in an unstable and non-linear resistance output. For athletes, it is difficult to accurately grasp the magnitude of the force applied during exercise, which can easily cause sports injuries. In addition, existing rowing machines require an additional power supply, which not only wastes exercise work but also wastes energy. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rowing machine for fitness, which reduces the space occupied, provides more linear and uniform resistance, improves the stability of force application, and at the same time can increase the power generation of the generator to meet the power usage requirements of the entire machine, thereby having the advantage of improving energy saving effects.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A rowing machine for fitness, comprising a rowing frame and a damping mechanism arranged on the rowing frame, wherein the damping mechanism comprises a frame mounted on the rowing frame, a generator arranged in sequence along the length direction of the frame, a plurality of transmission wheel groups and a reel, wherein the length direction of the frame extends in the length direction of the rowing machine; a pull rope is wound around the reel, and a reset member for driving the reel to rotate in the opposite direction is provided in the reel so that the pull rope is reset and wound around the reel; the transmission wheel group comprises a driving wheel rotatably arranged on the frame and a driving wheel that transmits power to the driving wheel; The driven wheel is connected, the driving wheel of the transmission wheel group is coaxially connected to the driven wheel of the adjacent transmission wheel group, the reel is coaxially connected to the driving wheel at one end of the frame, and the generator is coaxially connected to the driven wheel at the other end of the frame, and the transmission ratio of the driving wheel and the driven wheel is less than 1, so that the force required for the driving wheel to drive the driven wheel to rotate is increased; wherein, when the reel rotates, the reel drives the driving wheel to rotate, so as to drive the driven wheel to rotate at an increased speed, thereby linking multiple groups of transmission wheel groups to rotate, and causing the generator to rotate to generate electricity, thereby providing resistance by consuming the power of the generator.

[0011] It is further configured that when the pull rope is pulled to drive the reel to rotate, the rotating shaft of the reel drives the rotating shaft of the generator to rotate in the power generation direction through the transmission wheel group.

[0012] Further configuration: a one-way bearing is provided between the reel and the driving wheel for limiting the driving wheel from rotating in one direction, the free ring of the one-way bearing is connected to the reel shaft, the one-way rotating ring of the one-way bearing is connected to the driving wheel, and the rotation direction of the generator driven by the transmission wheel group is consistent with the rotation direction of the generator for power generation.

[0013] Further configuration: the generator is connected to a regulating member for adjusting the output power of the generator.

[0014] Further configuration: the regulating component includes a microcontroller and a generator output power adjustment module, the microcontroller is connected to the generator output power adjustment module, the generator output power adjustment module is connected to the generator, and the microcontroller is used to control the generator output power adjustment module to adjust the output power of the generator.

[0015] Further configuration: an electrical device is provided on the rowing machine frame, and the generator is connected to the electrical device to supply power to the electrical device; and a battery is also connected in parallel between the generator and the electrical device to store the power generated by the generator.

[0016] Further configuration: the electrical device includes a control panel arranged on the rowing machine frame, the control panel is connected to the microcontroller, and the control panel is provided with a resistance adjustment knob for sending a generator output power adjustment signal to the microcontroller.

[0017] It is further provided that the axial direction of the generator, the axial direction of the transmission wheel set and the axial direction of the reel all extend in the extension direction of the frame and are parallel or coaxially arranged with each other.

[0018] Further configuration: the rowing machine frame includes a slide seat and a fuselage hinged to one end of the slide seat, a limit member is provided between the fuselage and the slide seat for limiting the unfolding angle of the fuselage when it is unfolded from the slide seat, the damping movement is installed at the bottom of the slide seat, and the width of the frame of the damping movement is not greater than the width of the slide seat.

[0019] It is further configured that the limiting member is configured as a gas spring, both ends of the gas spring are hinged to the fuselage and the frame respectively, and when the gas spring contracts, the fuselage rotates and folds onto the frame.

[0020] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] 1. By arranging the generator, multiple transmission wheel sets and reels on the frame in sequence along the length of the frame, the space occupied by the damping mechanism can be reduced. The damping mechanism is installed on the rowing machine, which has a simple structure and reasonable layout, reducing the space occupied by the entire machine.

[0022] 2. Through the cooperation of multiple sets of transmission wheels and generators, multiple sets can provide uniform and stable resistance, the transmission of resistance is more linear, the stability of force application is improved, and the fitness effect is improved;

[0023] 3. By setting the transmission ratio of the driving wheel to the driven wheel to be less than 1, it is necessary for the driving wheel to drive the driven wheel with more effort, and when the driving wheel drives the driven wheel to rotate, the speed of the driven wheel can be increased. Therefore, when combined with multiple sets of transmission wheels, it can not only increase the pulling resistance to improve the exercise effect, but also increase the shaft speed of the generator and the power generation to meet the power requirements of the entire machine. The mechanical energy of the user's exercise is converted into electrical energy, making the rowing machine have the function of self-generating electricity, which has the advantages of energy saving and environmental protection.

[0024] 4. The one-way bearing can prevent the reel from driving the transmission wheel set to rotate in the opposite direction when the reel is reset and turned over, so as to ensure that the resistance provided by the generator and multiple transmission wheel sets is consistent when the rope is pulled again, thereby improving the fitness effect;

[0025] 5. By cooperating with the generator output power adjustment module, the output power of the generator can be adjusted to adjust the voltage and the electromagnetic torque of the generator, thereby realizing the resistance adjustment of the damping movement, improving the convenience of resistance adjustment, and making the resistance adjustment more linear, so that athletes can adjust to the required resistance size and improve the exercise effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a rowing machine for fitness;

[0027] Figure 2 It is a structural diagram of the damping movement;

[0028] Figure 3 Schematic diagram of the partial structure when part of the frame is hidden for the damping movement;

[0029] Figure 4 A schematic diagram of the connection relationship between the power-consuming device, battery, regulating component and generator;

[0030] Figure 5 This is a schematic diagram of the connection between the adjustment knob, control panel, adjustment parts and generator.

[0031] In the figure: 1. Rowing machine frame; 11. Slide seat; 12. Machine body; 2. Control panel; 3. Damping movement; 31. Frame; 32. Reel; 321. Reset member; 33. Transmission wheel group; 331. Driving wheel; 332. Driven wheel; 34. Generator; 4. Pull rope; 5. Pull handle; 6. Limiting member; 7. Adjusting member; 71. Microcontroller; 72. Generator output power adjustment module; 8. One-way bearing; 9. Battery; 10. Adjusting knob; 101. Rotary potentiometer. DETAILED DESCRIPTION

[0032] Reference Figures 1 to 5 The rowing machine for fitness is further explained.

[0033] A rowing machine for fitness, such as Figure 1As shown, it includes a rowing frame 1 and a damping movement 3 arranged on the rowing frame 1. The rowing frame 1 includes a slide seat 11 and a fuselage 12 hinged to one end of the slide seat 11. A limiter 6 is provided between the fuselage 12 and the slide seat 11 for limiting the deployment angle of the fuselage 12 when it is deployed from the slide seat 11. The damping movement 3 is installed at the bottom of the slide seat 11, and the length direction of the damping movement 3 extends toward the length direction of the slide seat 11, so that the overall structure of the rowing machine is simple and reasonably arranged, the volume is reduced to reduce the occupied space, and in conjunction with the hinged structure, the fuselage 12 and the slide seat 11 can be conveniently folded and placed when not in use, reducing the occupied space and facilitating transportation and placement.

[0034] like Figure 1 and Figure 2 As shown, the damping movement 3 includes a frame 31 installed on the rowing machine frame 1, a generator 34, a plurality of transmission wheel groups 33 and a reel 32 arranged in sequence along the length direction of the frame 31, and the length direction of the frame 31 extends toward the length direction of the rowing machine, and the width of the frame 31 is not greater than the width of the slide seat 11, wherein the axial direction of the generator 34, the axial direction of the transmission wheel group 33 and the axial direction of the reel 32 all extend toward the extension direction of the frame 31, and are arranged parallel or coaxially with each other, which can be easily installed, and makes the movement volume smaller, reducing the space occupied by the damping movement 3 installed on the rowing machine frame 1.

[0035] like Figure 1 As shown, the limiter 6 is configured as a gas spring, and the two ends of the gas spring are hinged to the fuselage 12 and the frame 31 respectively. When the gas spring contracts, the fuselage 12 rotates and folds onto the frame 31, which not only facilitates the folding of the fuselage 12, but also can buffer the impact force of the fuselage 12 folding toward the slide seat 11, avoiding direct impact of the fuselage 12 on the slide seat 11 when folding, and protecting the fuselage 12 and the slide seat 11; when the gas spring is deployed, the fuselage 12 is deployed from the sliding seat, and when the gas spring is at its maximum stroke, the deployment angle of the fuselage 12 is the largest, so as to facilitate the user to operate and use the fuselage 12.

[0036] like Figure 1 、 Figure 2 and Figure 3As shown, a pulling handle 5 is provided on the body 12, and a pull rope 4 is wound around the reel 32. One end of the pull rope 4 is connected to the reel 32, and the other end is connected to the pulling handle 5. By pulling the pulling handle 5, the pull rope 4 drives the reel 32 to rotate, thereby driving the rotation of multiple sets of transmission wheels 33 and the generator 34 through the reel 32 to provide resistance and achieve a fitness effect. A reset member 321 is provided within the reel 32 for driving the reel 32 to rotate in the opposite direction. The reset member 321 is configured as a coil spring so that when the pull rope 4 is pulled, the coil spring can generate a restoring force. When the pull rope 4 is released, the elastic force of the coil spring drives the reel 32 to rotate in the opposite direction, thereby rewinding the pull rope 4 around the reel 32, making it easier to pull the rope next time and improving the convenience of the exerciser.

[0037] like Figure 1 、 Figure 2 and Figure 3 As shown, the transmission wheel group 33 includes a driving wheel 331 rotatably arranged on the frame 31 and a driven wheel 332 connected to the driving wheel 331. The driving wheel 331 of the transmission wheel group 33 is coaxially connected to the driven wheel 332 of the adjacent transmission wheel group 33. The reel 32 is coaxially connected to the driving wheel 331 at one end of the frame 31, and the generator 34 is coaxially connected to the driven wheel 332 at the other end of the frame 31. When the pull rope 4 is pulled to drive the reel 32 to rotate, the rotating shaft of the reel 32 drives the rotating shaft of the generator 34 to rotate in the power generation direction through the transmission wheel group 33. , so that when the pull rope 4 is pulled to drive the reel 32 to rotate, the reel 32 drives the active wheel 331 to rotate, thereby driving the driven wheel 332 to rotate, and linking the multiple sets of transmission wheel groups 33 to rotate, so that the generator 34 rotates to generate electricity and provide resistance. The resistance is provided by consuming the electricity of the generator 34, and the resistance is provided by the cooperation between the generator 34 and the multiple sets of transmission wheel groups 33, which subverts the previous mode of magnetic resistance, wind resistance and water resistance, making the transmission change of resistance more linear, making the provision of resistance more uniform, so that the supply of resistance is more stable, and improving the exercise effect of the athlete.

[0038] like Figure 1 、 Figure 2 and Figure 3As shown, further, the transmission ratio of the driving wheel 331 and the driven wheel 332 is less than 1, so that the force required for the driving wheel 331 to drive the driven wheel 332 to rotate is increased, and in the process of the driving wheel 331 driving the driven wheel 332 to rotate, the speed of the driven wheel 332 relative to the driving wheel 331 can be increased. The transmission of each set of transmission wheel groups 33 is driven by the driving wheel 331 to drive the driven wheel 332 to rotate. Therefore, with the cooperation of multiple sets of transmission wheel groups 33, not only the pulling resistance can be increased and the linear transmission resistance can be transmitted, but also the rotation speed of the linked generator 34 can be increased when the pull rope 4 is pulled to drive the reel 32 to rotate, so as to increase the power generation of the generator 34 so that it meets the power demand of the whole machine, and no external power supply is required, thereby improving the energy saving and environmental protection effect. The rowing machine frame 1 is provided with an electrical device 2, and a generator 34 is connected to the electrical device 2 to supply power to the electrical device 2. A battery 9 is also connected in parallel between the generator 34 and the electrical device 2 to store the generator's power. This power is stored in the battery 9, which then supplies power to the entire machine, improving energy conservation and environmental protection.

[0039] like Figure 2 and Figure 3 As shown, a one-way bearing 8 is provided between the reel 32 and the driving wheel 331 for limiting the driving wheel 331 to rotate in one direction. The free ring of the one-way bearing 8 is connected to the rotating shaft of the reel 32, and the one-way rotating ring of the one-way bearing 8 is connected to the driving wheel 331. The rotation direction of the generator 34 driven by the transmission wheel group 33 is consistent with the power generation rotation direction of the generator 34, so that the reel 32 cannot drive the transmission wheel group 33 to rotate during the process of winding the pull rope 4, thereby preventing the generator 34 from rotating in the opposite direction and causing power loss. In addition, the transmission wheel group 33 can consume the kinetic energy originally transmitted during the process of rewinding and resetting the reel 32, so that the transmission wheel group 33 and the generator 34 rotate to a standstill, thereby avoiding the presence of the inertia force of the previous transmission when force is applied again, and ensuring that the torque of the generator 34 remains unchanged. Each time the pull rope 4 is pulled, the resistance provided by the transmission wheel group 33 and the generator 34 is consistent, thereby ensuring that the force applied each time the pull rope 4 is pulled is consistent, making the provided resistance more stable and improving the exercise effect of the athlete.

[0040] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the generator 34 is further connected to an adjustment member 7 for adjusting the output power of the generator 34. By adjusting the torque of the generator 34, resistance is adjusted. This, in conjunction with the multiple transmission wheel sets 33, linearly adjusts resistance, thereby enhancing the exercise effect. Specifically, the adjustment member 7 includes a microcontroller 71 and a generator output power adjustment module 72. The microcontroller 71 is connected to the generator output power adjustment module 72, which is in turn connected to the generator 34. The microcontroller 71 controls the generator output power adjustment module 72 to adjust the output power of the generator 34, thereby adjusting resistance. In this embodiment, the generator output power adjustment module 72 is configured as a PWM signal duty cycle adjustment module. The microcontroller 71 controls the PWM signal duty cycle adjustment module, causing it to adjust the duty cycle between the positive and negative poles of the generator 34. When the voltage is higher, the electromagnetic torque within the generator 34 increases, and the resistance provided to the pull rope 4 increases, increasing the pulling force required to pull the rope 4. Conversely, a lower voltage reduces the pulling force, thereby providing a linearly varying resistance in conjunction with the transmission wheel sets 33, enhancing the exercise effect. The adjusting member 7 is connected in parallel with the battery 9 so that the adjusting member 7 is provided with electric energy by the battery 9, which facilitates adjustment of the resistance provided by the generator 34 when the generator 34 is not generating work.

[0041] like Figure 1 and Figure 5 As shown, to facilitate resistance adjustment, the electrical device includes a control panel 2 connected to a microcontroller 71. A resistance adjustment knob 10 is provided on the control panel 2 for transmitting a generator output power adjustment signal to the microcontroller 71. Resistance adjustment can be achieved by rotating the resistance adjustment knob 10, thereby improving operational convenience. The resistance adjustment knob 10 is connected to a rotary potentiometer 101, which is connected to the control panel 2 to generate a generator output power adjustment signal and transmit it to the control panel 2, facilitating resistance adjustment. A battery 9 is connected in parallel with the electrical device to provide power to the control panel 2, facilitating adjustment of the resistance provided by the generator 34 when the generator 34 is not generating work.

[0042] Working principle: When exercising, the athlete pulls the handle 5 to pull the pull rope 4 to drive the reel 32 to rotate, drive the driving wheel 331 to rotate, drive the driven wheel 332 to rotate, and then drive multiple sets of transmission wheel groups 33 to rotate, and drive the generator 34 to rotate through the transmission wheel group 33 to generate electricity. In the process of the driving wheel 331 driving the driven wheel 332, the transmission ratio of the driving wheel 331 to the driven wheel 332 is less than 1, then the driving wheel 331 needs a greater force to pull the driven wheel 332, thereby increasing the pulling resistance, and cooperating with the transmission of multiple sets of transmission wheel groups 33, further increasing the pulling force required to pull the pull rope 4 to drive the generator 34 to rotate, thereby improving the movement effect, the resistance of the generator 34 is transmitted through multiple sets of transmission wheel groups 33, so that the output of the resistance is more uniform, thereby improving the movement effect; and after the driving wheel 331 drives the driven wheel 332 to rotate, the speed of the driven wheel 332 is faster than that of the driving wheel 331, thereby through the transmission of multiple sets of transmission wheel groups 33, the rotation speed of the generator 34 is accelerated, the power generation is increased, to meet the power demand of the whole machine, and improve the energy saving and environmental protection effect. After completing a pull, the reset member of the reel 32 drives the reel 32 to reset, and the pull rope 4 is rewound on the reel 32. During this process, the reel 32 rotates in the opposite direction, and the transmission wheel group 33 is in a state where it cannot be linked by the reel 32 to rotate in the opposite direction, so that the transmission wheel group 33 can consume the pulling force completely until the transmission wheel group 33 and the generator 34 stop rotating. Therefore, when the pull rope 4 is pulled again to exercise, the resistance remains consistent, so that the resistance output is stable and the exercise effect is improved. When the athlete needs to adjust the resistance, by turning the resistance adjustment knob 10, the duty cycle of the generator 34 is adjusted through the microcontroller 71 and the generator output power adjustment module 72, the output power of the generator is adjusted, and the torque of the generator 34 is adjusted to achieve resistance adjustment, which is convenient and quick. After the resistance of the generator 34 is adjusted, it cooperates with the transmission of the multiple transmission wheel groups 33, making the resistance adjustment more linear, further improving the exercise effect. Through the above scheme, the present invention reduces the occupied space, and provides more linear and uniform resistance, improves the force stability, and at the same time can increase the power generation of the generator to meet the power usage requirements of the entire machine, with the advantage of improving energy saving effects.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A rowing machine for fitness, characterized in that: The invention comprises a rowing machine frame (1) and a damping mechanism (3) arranged on the rowing machine frame (1), wherein the damping mechanism (3) comprises a frame (31) mounted on the rowing machine frame (1), a generator (34) arranged in sequence along the length direction of the frame (31), a plurality of transmission wheel groups (33) and a reel (32), wherein the length direction of the frame (31) extends toward the length direction of the rowing machine; a pull rope (4) is wound around the reel (32), and a reset member (321) for driving the reel (32) to rotate in the opposite direction is provided in the reel (32), so that the pull rope (4) is reset and wound around the reel (32); the transmission wheel group (33) comprises a driving wheel (331) rotatably arranged on the frame (31) and a driven wheel (332) transmission-connected to the driving wheel (331). The driving wheel (331) of the transmission wheel group (33) is coaxially connected to the driven wheel (332) of the adjacent transmission wheel group (33); the reel (32) is coaxially connected to the driving wheel (331) at one end of the frame (31); the generator (34) is coaxially connected to the driven wheel (332) at the other end of the frame (31); and the transmission ratio of the driving wheel (331) to the driven wheel (332) is less than 1, so that the force required for the driving wheel (331) to drive the driven wheel (332) to rotate is increased; wherein, when the reel (32) rotates, the reel (32) drives the driving wheel (331) to rotate, thereby driving the driven wheel (332) to rotate at a faster speed, thereby linking the multiple transmission wheel groups (33) to rotate, and causing the generator (34) to rotate to generate electricity, thereby providing resistance by consuming the electricity of the generator (34); When the pull rope (4) is pulled to drive the reel (32) to rotate, the rotating shaft of the reel (32) drives the rotating shaft of the generator (34) to rotate in the power generation direction through the transmission wheel group (33); When the pull rope (4) is pulled to drive the reel (32) to rotate, the reel (32) drives the driving wheel (331) to rotate, thereby driving the driven wheel (332) to rotate, and the plurality of transmission wheel groups (33) are linked to rotate, so that the generator (34) rotates to generate electricity and provide resistance, and the resistance is provided by consuming the power of the generator (34) and utilizing the cooperation between the generator (34) and the plurality of transmission wheel groups (33); A one-way bearing (8) is provided between the cable reel (32) and the driving wheel (331) for limiting the driving wheel (331) from rotating in a single direction. The free ring of the one-way bearing (8) is connected to the rotating shaft of the cable reel (32), and the one-way rotating ring of the one-way bearing (8) is connected to the driving wheel (331). The direction of rotation of the generator (34) driven by the transmission wheel group (33) is consistent with the direction of rotation of the generator (34) when generating electricity. The axial direction of the generator (34), the axial direction of the transmission wheel group (33) and the axial direction of the reel (32) all extend in the extension direction of the frame (31) and are arranged parallel to or coaxially with each other.

2. A rowing machine for fitness according to claim 1, characterized in that: The generator (34) is connected to an adjusting member (7) for adjusting the output power of the generator (34).

3. A rowing machine for fitness according to claim 2, characterized in that: The regulating member (7) comprises a microcontroller (71) and a generator output power adjustment module (72); the microcontroller (71) is connected to the generator output power adjustment module (72); the generator output power adjustment module (72) is connected to the generator (34); and the microcontroller (71) is used to control the generator output power adjustment module (72) to adjust the output power of the generator (34).

4. A rowing machine for fitness according to claim 3, characterized in that: The rowing machine frame (1) is provided with an electrical device for the entire machine, and the generator (34) is connected to the electrical device to supply power to the electrical device; and a storage battery (9) is connected in parallel between the generator (34) and the electrical device to store the power generated by the generator (34).

5. A rowing machine for fitness according to claim 4, characterized in that: The power-consuming device comprises a control panel (2) arranged on a rowing machine frame (1), the control panel (2) being connected to a microcontroller (71), and a resistance adjustment knob (10) for sending a generator output power adjustment signal to the microcontroller (71) being provided on the control panel (2).

6. The rowing machine for fitness according to claim 1, characterized in that: The rowing machine frame (1) comprises a slide seat (11) and a body (12) hinged to one end of the slide seat (11); a limiter (6) is provided between the body (12) and the slide seat (11) for limiting the unfolding angle of the body (12) when unfolding from the slide seat (11); the damping mechanism (3) is mounted on the bottom of the slide seat (11); and the width of the frame (31) of the damping mechanism (3) is not greater than the width of the slide seat (11).

7. A rowing machine for fitness according to claim 6, characterized in that: The limiting member (6) is configured as a gas spring, the two ends of which are hinged to the fuselage (12) and the frame (31) respectively, and when the gas spring contracts, the fuselage (12) rotates and folds onto the frame (31).

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