Multifunctional fitness rowing machine

Abstract

The utility model provides a multifunctional fitness rowing machine. The rowing machine comprises a base, a seat assembly and a linkage assembly. Wherein the seat assembly comprises a cushion and a backrest frame, and the cushion can be driven by the linkage assembly to swing back and forth and up and down relative to the base. After a body builder sits on the cushion, the body builder can step on the two pedals at the front end of the base with two feet and hold two paddle rods of the linkage assembly with two hands, the body is driven to incline backwards to press the backrest frame through the actions of pulling the paddle rods and pedaling the two legs straight, and then the backrest frame is driven to push the body up under the acting force of the elastic element. The boating body-building action can be formed by repeating the steps; or the two legs can be put on the limiting rollers on the two sides of the limiting rod respectively so that the two legs can be fixed, and the sit-up fitness action can be achieved only by inclining the body backwards and pressing the backrest frame. Therefore, the bodybuilding device has the bodybuilding function of boating action and the bodybuilding function of realizing sit-up action, so that a bodybuilder can select and use the bodybuilding device as required, and the bodybuilding device has relatively wide applicability.

Description

Technical Field

[0001] The utility model relates to the field of fitness equipment structures, in particular to a multifunctional fitness rowing machine. Background Art

[0002] A rowing machine is a common fitness equipment that simulates the water rowing sport. Currently, most rowing machines are pulled by both hands with a handle to drive the seat cushion to move forward or backward, so as to realize the flexion and extension of the legs and the pitching of the waist and abdomen of the body. For example, the rowing fitness machine disclosed in the application number 201820374269.X. Similar to this rowing machine, the seat cushion can only slide linearly back and forth and cannot drive the upper body to swing and pitch in more dimensions. Therefore, the exercise effect is average. Content of the Utility Model

[0003] Aiming at the deficiencies proposed in the above background art, the utility model provides a multifunctional fitness rowing machine.

[0004] The utility model adopts the following technical solutions:

[0005] A multifunctional fitness rowing machine includes:

[0006] A base, with a footrest provided at the front end of the base;

[0007] A seat assembly, which includes a seat cushion and a backrest frame. The backrest frame is connected to swing at one end of the seat cushion, and an elastic element is connected between the backrest frame and the seat cushion. The elastic force of the elastic element pushes the backrest frame towards the seat cushion;

[0008] A linkage assembly, which includes a sliding rod, a first swing member, a second swing member, a connecting member and an oar rod. The lower end of the sliding rod is connected to the base to slide linearly relative to the footrest, and the upper end of the sliding rod is fixed to the seat cushion. The lower ends of both the first swing member and the second swing member are connected to the base to swing. The upper end of the first swing member is pivotally connected to the seat cushion, the upper end of the second swing member is fixed to the seat cushion, and both sides of the second swing member are pivotally connected to the oar rod. The two oar rods respectively extend upwards to both sides of the seat cushion, and both ends of the connecting member are pivotally connected to the first swing member and the second swing member respectively.

[0009] In a possible implementation, the seat cushion assembly further includes a connecting rod, the seat cushion is fixed to the connecting rod, one end of the connecting rod away from the foot pedal is fixedly connected with a pivot member, the pivot member is sleeved with a rotating shaft, the lower end of the backrest frame is embedded in the pivot member, and the rotating shaft passes through the lower end of the backrest frame, so that the backrest frame swings relative to the seat cushion with the rotating shaft as the axis; the elastic element is a torsion spring, the torsion spring is sleeved outside the rotating shaft, and both ends of the torsion spring are respectively fixed to the backrest frame and the pivot member.

[0010] In a possible implementation, a stop rod is fixed to the lower end of the pivot member on the side away from the seat cushion, and a limiting rod is fixed to the bottom of the lower end of the backrest frame, and the stop rod blocks the limiting rod.

[0011] In a possible implementation, the backrest frame includes a support rod and backrest rollers, the support rod swings at one end connected to the seat cushion, and a plurality of rotatable backrest rollers are connected to both sides of the support rod.

[0012] In a possible implementation, a limiting rod is fixed to the front end of the seat cushion, two limiting rollers are fixed to both sides of the limiting rod, the limiting rollers above both sides of the limiting rod are used to support the popliteal fossa, and the feet respectively pass through between the limiting rollers on both sides of the limiting rod.

[0013] In a possible implementation, the seat cushion assembly further includes a connecting rod, the seat cushion is fixed to the connecting rod, the connecting rod is of a hollow tube structure, the connecting rod penetrates into a first adjusting rod, the limiting rod is fixed to the first adjusting rod, a row of threaded holes is further provided on the bottom surface of the connecting rod, the threaded holes are adapted to be screwed and connected with fixing bolts, and after the fixing bolt passes through one of the threaded holes, it presses against the first adjusting rod located in the connecting rod.

[0014] In a possible implementation, a first limiting portion protruding is fixed to one end of the base away from the foot pedal, a second limiting portion is fixed to the first swinging member, and when the first swinging member swings forward and downward towards the base, the first limiting portion can block the second limiting portion.

[0015] In a possible implementation, the rowing machine further includes a damper, the damper has a telescopic rod, one end of the damper away from the end where the telescopic rod extends is pivotally connected to the front end of the base, and the telescopic rod of the damper is pivotally connected to the second swinging member.

[0016] In a possible implementation, a second adjusting sleeve is fixed to the front end of the base. A second adjusting rod is fitted inside the second adjusting sleeve, and the second adjusting rod is telescopically movable relative to the second adjusting sleeve. One end of the damper away from the telescopic rod is pivotally connected to the second adjusting rod. A second adjusting bolt is spirally connected to the outside of the second adjusting sleeve inward. The second adjusting rod is provided with a row of adjusting holes, and the second adjusting bolt is spirally inserted into the second adjusting sleeve and then into one of the adjusting holes.

[0017] In a possible implementation, the seat cushion assembly further includes a connecting rod. The seat cushion is fixed to the connecting rod, and the lower part of the connecting rod is embedded in a first adjusting sleeve. The connecting rod is linearly slidably adjusted relative to the first adjusting sleeve and then fixed. The first swing member is pivotally connected to the bottom of the first adjusting sleeve, and the second swing member is fixed to the first adjusting sleeve.

[0018] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: When a fitness person sits on the seat cushion and steps on the two foot pedals with both feet respectively, and holds the two oar rods with both hands respectively, by pulling the oar rods upward, the second swing member is driven to swing upward, so that the seat cushion swings backward and upward relative to the base and the body lies backward and presses the backrest frame. Then, by pushing the oar rods downward, the second swing member is driven to swing downward, so that the seat cushion swings forward and downward relative to the base and the elastic element drives the backrest frame to push the back of the fitness person forward. During this process, the oar rods can be swung inward or outward simultaneously to form a rowing motion similar to rowing a boat, forming a fitness action that synchronously exercises the upper limbs and the waist and abdomen. And the seat cushion can swing upward and downward while swinging forward and backward relative to the base, synchronously forming a multi-dimensional swinging posture, so that the upper limbs, lower limbs, waist and abdomen, and back will complete a complete contraction and extension, forming a better aerobic exercise effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a three-dimensional structural schematic diagram of the present invention after the seat cushion swings forward relative to the base.

[0020] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0021] Figure 3 FIG. is a three-dimensional structural schematic diagram of the fixed sliding member under the seat assembly.

[0022] Figure 4 FIG. is a three-dimensional structural schematic diagram of the seat assembly from the bottom view perspective.

[0023] Figure 5 is Figure 4 an enlarged schematic view of part B in

[0024] Figure 6Schematic diagram of the three-dimensional structure of the base.

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the present utility model after the seat cushion swings backward relative to the base.

[0026] Figure 8 For Figure 7 Enlarged three-dimensional structure schematic diagram at position C in

[0027] Figure 9 Schematic diagram of the side of the present utility model after the limiting rod is removed and the seat cushion swings forward relative to the base.

[0028] Figure 10 Schematic diagram of the side of the present utility model after the limiting rod is removed and the seat cushion swings backward relative to the base.

[0029] Figure 11 Schematic diagram of the side of the present utility model after the limiting rod is not removed and the seat cushion swings backward relative to the base.

[0030] Figure 12 For Figure 11 Enlarged schematic diagram at position D in

[0031] Figure 13 Schematic diagram of the sectional structure of the second adjusting bolt and the fixing bolt. Detailed implementation mode

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the following will further describe this application in detail with reference to the accompanying drawings.

[0033] Hereinafter, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0034] In addition, in this application, orientation terms such as "upper" and "lower" are defined relative to the orientation in which the components in the drawings are schematically placed. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and they can change accordingly with the change of the orientation in which the components in the drawings are placed.

[0035] The present utility model provides a multifunctional fitness rowing machine. As shown in the attached Figure 1 And 7 figures, the rowing machine includes a base 1, a seat assembly 2 and a linkage assembly. Among them, footrests 11 are provided on both sides of the front end of the base 1, and the linkage assembly connects the seat assembly 2 to the base 1, so that the seat assembly 2 can swing relative to the base 1.

[0036] As shown in the attached Figure 1and 3 As shown in 3 , the seat assembly 2 includes a seat cushion 21, a backrest frame 22, and a connecting rod 23. Among them, the seat cushion 21 is fixed to the connecting rod 23. One end of the connecting rod 23 away from the footrest 11 is fixedly connected with a pivot member 231. The pivot member 231 is fixedly installed with a rotating shaft 232. The lower end of the backrest frame 22 is embedded in the pivot member 231, and the rotating shaft 232 passes through the lower end of the backrest frame 22, so that the backrest frame 22 is located at one end of the seat cushion 21 and swings relative to the seat cushion 21 with the rotating shaft 232 as the axis. An elastic element 24 is also connected between the backrest frame 22 and the seat cushion 21. The elastic element 24 is a torsion spring. The torsion spring is sleeved outside the rotating shaft 232, and the two ends of the torsion spring extending linearly after curling are respectively fixed to the backrest frame 22 and the pivot member 231, so that the torsional elastic force formed by the elastic element 24 pushes the backrest frame 22 towards the seat cushion 21. Further, a stop rod 25 is fixed to the lower end of the pivot member 231 on the side away from the seat cushion 21, and a limit rod 31 is fixed to the bottom of the lower end of the backrest frame 22. The stop rod 25 blocks the limit rod 31 to block the backrest frame 22, so that the backrest frame 22 and the seat cushion 21 maintain an angle greater than 90°, which is convenient for the fitness person to sit.

[0037] Continue to refer to the attached Figure 1 , the backrest frame 22 includes a support rod 221 and a backrest roller 222. The lower end of the support rod 221 is embedded in the pivot member 231 and the rotating shaft 232 passes through the support rod 221, so that the support rod 221 is connected to swing at one end of the seat cushion 21. A number of rotatable backrest rollers 222 are connected to both sides of the support rod 221. After the fitness person sits on the seat cushion 21, the back of the fitness person can lean on the backrest rollers 222 of the support rod 221. During the process that the back of the fitness person lies back and presses down the backrest rollers 222 to make the backrest frame 22 turn downward and the process that the backrest frame 22 turns upward under the action of the elastic element 24 and supports the back of the fitness person through the backrest rollers 222, the frictional force formed between the back of the fitness person and the backrest rollers 222 can drive the backrest rollers 222 to rotate, which plays a role in massaging the back to a certain extent during this process.

[0038] As shown in the attached Figures 7 to 10As shown, the linkage assembly includes a sliding rod 43, a first swing member 41, a second swing member 42, a connecting member 44, and a paddle rod 45. Among them, the upper end of the sliding rod 43 is fixed to the connecting rod 23 under the seat cushion 21, and the lower end of the sliding rod 43 is connected to slide linearly relative to the footrest 11 on the base 1. The connection structure can be that guide rails 12 are provided on both sides of the base 1, and guide rods 13 are fixed above the guide rails 12. There is a gap between the guide rods 13 and the guide rails 12. The lower end of the sliding rod 43 is connected to a rotatable guide wheel 431. The circumferential surface of the guide wheel 431 is recessed inward to form a guide groove. The guide wheel 431 is located between the guide rail 12 and the guide rod 13, and both the guide rail 12 and the guide rod 13 are stuck in the guide groove. In this way, the lower end of the sliding rod 43 is restricted to slide relative to the footrest 11 on the base 1 by the structure that restricts the guide wheel 431 between the guide rail 12 and the guide rod 13. And the guide rod 13 bends downward at a position close to the rear end of the base 1 until it is fixed to the guide rail 12, thereby forming a travel limit for the guide wheel 431 to limit the angle of the subsequent swing of the seat cushion 21 towards the rear end of the base 1.

[0039] Continue to refer to the appendix Figure 9 and 10 , the lower ends of the first swing member 41 and the second swing member 42 are both pivotally connected to the base 1 to swing. The pivotal connection in this embodiment can be the same as the structure formed by connecting the above-mentioned support rod 221 and the pivot member 231 through the rotating shaft 232, so that the two pivotally connected components can swing relative to each other. Refer to the appendix again Figure 1 and 2 , the upper end of the first swing member 41 is pivotally connected to the seat cushion 21, and both ends of the connecting member 44 are pivotally connected to the first swing member 41 and the second swing member 42 respectively. In this structure, when the second swing member 42 swings, the first swing member 41 can be driven to swing accordingly through the connecting member 44, thereby driving the seat assembly 2 to swing.

[0040] Continue to refer to the appendix Figure 1 and 7, both sides of the second swing member 42 are pivotally connected to the oar rods 45, and the two oar rods 45 respectively extend upward to both sides of the seat cushion 21. When the fitness person sits on the seat cushion 21 and steps on the two foot pedals 11 with both feet respectively, the two hands respectively hold the two oar rods 45, and by pulling the oar rods 45 upward, the second swing member 42 is driven to swing upward, so that the seat cushion 21 swings backward and upward along with it. Then, by pushing the oar rods 45 downward, the second swing member 42 is driven to swing downward, so that the seat cushion 21 swings forward and downward along with it. At the same time, the elastic element 24 drives the backrest frame 22 to push the back of the fitness person forward. During the process of pulling and pushing the oar rods 45 upward, the oar rods 45 can be swung inward or outward simultaneously to form a rowing action similar to rowing a boat, forming a fitness action for synchronously exercising the upper limbs. At the same time, the action of straightening the feet and pushing against the two foot pedals 11 can also be used to push the body to swing backward relative to the base 1, forming a fitness action for synchronously exercising the legs. Thus, it can be seen that during the process of completing one rowing action by pulling the oar rods 45, the seat cushion 21 can swing upward and downward while swinging forward and backward relative to the base 1, synchronously forming a multi-dimensional swinging posture, so that the upper limbs, lower limbs, waist and abdomen, and back will complete a complete contraction and extension, forming a better aerobic exercise effect.

[0041] As shown in the attached Figure 6 and 7 figure, a first limiting portion 14 with a convex shape is fixed at one end of the base 1 away from the foot pedal 11, and the second limiting portion 411 is fixed to the first swing member 41. When the second swing member 42 drives the first swing member 41 to swing downward and forward relative to the base 1, the first limiting portion 14 can block the second limiting portion 411, thereby limiting the forward swing angle of the second swing member 42 and the first swing member 41, and thus limiting the forward swing stroke of the seat cushion 21, so that the seat cushion 21 can maintain the posture as shown in the attached Figure 7 figure after swinging forward, for the convenience of the fitness person to sit.

[0042] As shown in the attached Figure 4 and 5As shown in the figure, the lower end of the connecting rod 23 is embedded in a first adjusting sleeve 26 with a U-shaped cross-section. The bottom of the first swing member 41 is pivotally connected to the first adjusting sleeve 26, and the second swing member 42 is fixed to the side of the first adjusting sleeve 26, thereby forming a structure in which the first swing member 41 and the second swing member 42 are connected to the connecting rod 23 through the first adjusting sleeve 26. Further, the connecting rod 23 is provided with a strip-shaped hole 233 penetrating the side surface, and limit pins 234 are fixed on both sides of the connecting rod 23 near the front end of the base 1; a screw rod 261 is inserted through the side surface of one end of the first adjusting sleeve 26, and the screw rod 261 simultaneously passes through the strip-shaped hole 233. A strip-shaped groove 262 is provided on the side surface of the other end of the first adjusting sleeve 26, and the strip-shaped groove 262 is adaptively stuck outside the limit pin 234, thereby restricting the connecting rod 23 embedded in the first adjusting sleeve 26 to slide linearly relative to the first adjusting sleeve 26 only. Furthermore, the connecting rod 23 is a hollow tube structure, and a row of adjusting holes (not shown in the drawings) are also provided on the bottom surface of the connecting rod 23. A first adjusting bolt 263 is screwed to the bottom surface of the first adjusting sleeve 26, and the first adjusting bolt 263 is screwed through the first adjusting sleeve 26 and then inserted into one of the adjusting holes, thereby fixing the connecting rod 23 relative to the first adjusting sleeve 26, realizing the adjustment of the positions of the first swing member 41 and the second swing member 42 relative to the seat cushion 21 and the backrest frame 22, that is, adjusting the positions of the seat cushion 21 and the backrest frame 22 relative to the footrest 11 of the base 1, which is convenient for fitness exercisers of different body types to sit and use when doing rowing movements.

[0043] As shown in the attached Figure 7 and 8 shown, the rowing machine of the present invention further includes a damper 5. The damper 5 has a telescopic rod 51. Preferably, the damper 5 can be a hydraulic damper 5 or a spring damper 5. One end of the damper 5 away from the telescopic rod 51 extending out is pivotally connected to the front end of the base 1, and the telescopic rod 51 of the damper 5 is pivotally connected to the second swing member 42. In this structure, when the first swing member 41 swings, it can drive the damper 5 to swing accordingly, and the pulling force formed by the telescopic rod 51 of the damper 5 retracting inward can form a resistance to the upward swing of the second swing member 42, thereby forming the resistance to the upward pull of the oar rod 45 and the resistance to the upward push of the feet during fitness, so as to improve the intensity of fitness training. And the damper 5 can also pull the first limiting member swinging backward to the base 1 to limit the backward swing angle of the second swing member 42 and the first swing member 41, thereby restricting the backward swing stroke of the seat cushion 21, so that the seat cushion 21 can maintain the posture as shown in the attached Figure 10 shown after swinging backward.

[0044] Further, a second adjusting sleeve 521 is fixed to the front end of the base 1. A second adjusting rod 522 is fitted inside the second adjusting sleeve 521. The second adjusting rod 522 telescopically moves relative to the second adjusting sleeve 521. One end of the damper 5 away from the telescopic rod 51 extends and is pivotally connected to the second adjusting rod 522. A second adjusting bolt 523 is screwed into the second adjusting sleeve 521 from the outside. The second adjusting rod 522 is provided with three adjusting holes. After the second adjusting bolt 523 is screwed into the second adjusting sleeve 521, it penetrates into one of the adjusting holes to fix the second adjusting rod 522. In this structure, by adjusting the length of the second adjusting rod 522 extending outside the second adjusting sleeve 521, the distance between the damper 5 and the second swinging member 42 can be adjusted, which is equivalent to adjusting the angle by which the damper 5 restricts the second swinging member 42, so as to adjust the maximum swinging angle by which the damper 5 restricts the second swinging member 42, that is, to restrict the backward swinging stroke of the second swinging member 42 and the seat cushion 21 relative to the base 1. Specifically, when the second adjusting rod 522 moves into the second adjusting sleeve 521 until the first adjusting hole (i.e., the frontmost adjusting hole) corresponds to the second adjusting bolt 523 and the second adjusting bolt 523 is inserted into this adjusting hole, the damper 5 is adjusted to a state close to being straight with the base 1, which is convenient for storing the damper 5 inside the base 1. At this time, it is convenient to fold and pack the whole utility model; when the second adjusting rod 522 moves into the second adjusting sleeve 521 until the second adjusting hole (i.e., the middle adjusting hole) corresponds to the second adjusting bolt and the second adjusting bolt 523 is inserted into this adjusting hole, the damper 5 is adjusted to be inclined relative to the base 1, and the second swinging member 42 can be lifted for fitness; when the second adjusting rod 522 moves to the second adjusting sleeve 521 until the third adjusting hole (i.e., the rearmost adjusting hole) corresponds to the second adjusting bolt 523 and the second adjusting bolt is inserted into this adjusting hole, the damper 5 is adjusted to be inclined relative to the base 1 and tilted up to the maximum angle, and the second swinging member 42 can be lifted up to the maximum angle, so as to drive the first swinging member 41 to be lifted up to the maximum angle, which is convenient for installing the first limiting portion 14 on the base 1.

[0045] As attached Figure 11 and 12As shown in the figure, a limiting rod 31 is also fixed at the front end of the seat cushion 21. Two limiting rollers 32 are fixed on both sides of the limiting rod 31. The surfaces of the limiting rollers 32 and the above-mentioned backrest rollers 222 can be wrapped with foam. During fitness, the legs are respectively hung on the limiting rollers 32 above both sides of the limiting rod 31, and the calves bypass between the two limiting rollers 32 on the same side. Among the limiting rollers 32 on both sides of the limiting rod 31, the upper limiting roller 32 is used to support the popliteal fossa, and the lower limiting roller 32 is used to hook the ankles or directly stand on the ground with both feet, so as to limit the legs of the fitness person at the front end of the seat cushion 21. During the fitness process, the hands can be crossed behind the head, and then the body lies back and exerts force to press down the backrest frame 22, and then the body relaxes so that the elastic force formed by the elastic element 24 pushes up the backrest frame 22 and makes it move upward. In this way, a sit-up fitness movement can be formed to exercise the waist and abdomen.

[0046] Furthermore, the connecting rod 23 is of a hollow tube structure. The connecting rod 23 penetrates into the first adjusting rod 33, and the limiting rod 31 is fixed to one end of the first adjusting rod 33 outside the connecting rod 23. A fixing bolt 34 is also screwed and fixed to the bottom surface of the connecting rod 23. The fixing bolt 34 screws through the connecting rod 23 and then presses against the first adjusting rod, so that the first adjusting rod 33 is clamped and fixed. During use, the first adjusting rod 33 can be pulled out and then the distance between the limiting rod 31 and the seat cushion 21 can be adjusted, and then the fixing bolt 34 can be tightened to fix the first adjusting rod 33. In this way, the position of the limiting roller 32 can be adjusted according to the fitness person with different leg lengths, so that the present utility model can adapt to fitness persons with different body types to limit the legs during sit-ups. It is worth mentioning that when performing the above rowing movement, the first adjusting rod 33 needs to be pulled out of the connecting rod 23 to disassemble the first adjusting rod 33 and the limiting rod 31 from the front end of the seat cushion 21 to avoid affecting the movement of the legs of the fitness person.

[0047] Preferably, as shown in the appendix Figure 13As shown in the figure, the structures of the first adjusting bolt 263 and the second adjusting bolt 523 can both include a connecting portion 61, a telescopic portion 62, and a spring 63. Among them, one end of the telescopic portion 62 is a knob 622 for holding, and the other end is a plug pin 621. The plug pin 621 is used to insert into the adjusting holes of the connecting rod 23 and the second adjusting sleeve 521. The center of the connecting portion 61 is penetrated, the plug pin 621 of the telescopic portion 62 passes through the center of the connecting portion 61, and an external thread is provided on the outer surface of the connecting portion 61. This external thread is used to be screwed adaptively with the first adjusting sleeve 26 and the second adjusting sleeve 521, so that the connecting portion 61 is screwed into the first adjusting sleeve 26 or the second adjusting sleeve 521 and fixed relative to the first adjusting sleeve 26 or the second adjusting sleeve 521. A spring 63 is connected between the connecting portion 61 and the knob 622 of the telescopic portion 62. The elastic force generated by the compression of the spring 63 can pull the connecting portion 61 towards the knob 622. When the connecting portion 61 is fixed, during operation, the knob 622 can be held and the plug pin 621 can be pulled out of the first adjusting sleeve 26 or the second adjusting sleeve 521, so that the plug pin 621 can be disengaged from the adjusting holes of the connecting rod 23 and the second adjusting rod 522. After moving to the position that needs to be adjusted, the knob 622 is released, and the plug pin 621 can move into the first adjusting sleeve 26 or the second adjusting sleeve 521, so that the plug pin 621 is inserted into the adjusting hole. This operation method is very convenient and is conducive to improving the convenience of operation and use.

[0048] In summary, after the fitness person sits on the seat cushion 21, they can step on the two foot pedals 11 with both feet and hold the two oar rods 45 with both hands. By pulling the oar rods 45 and straightening the legs, the body is driven to lean backward and press down the backrest frame 22, and then the backrest frame 22 is driven by the elastic element 24 to push the body up. In this way, a rowing fitness action is formed by repeating this process; or the legs can be respectively placed on the limiting rollers 32 on both sides of the limiting rod 31 to fix the legs, and only by leaning the body backward and then the backrest frame 22, and then similarly, the backrest frame 22 is driven by the elastic element 24 to push the body up. In this way, a sit-up fitness action is formed by repeating this process. It can be seen that the present invention has the fitness function of rowing actions and the fitness function of realizing sit-up actions, enabling the fitness person to choose and use according to their needs, and having relatively wide applicability.

[0049] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantive modification made to the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A multifunctional fitness rowing machine, characterized in that, The rowing machine includes: A base, with a footrest provided at the front end of the base; A seat assembly, the seat assembly including a seat cushion and a backrest frame, the backrest frame being connected to swing at one end of the seat cushion, and an elastic element being connected between the backrest frame and the seat cushion, the elastic force of the elastic element pushing the backrest frame towards the seat cushion; A linkage assembly, the linkage assembly including a sliding rod, a first swing member, a second swing member, a connecting member and an oar rod, the lower end of the sliding rod being connected to the base to slide linearly relative to the footrest, the upper end of the sliding rod being fixed to the seat cushion, the lower ends of both the first swing member and the second swing member being connected to the base to swing, the upper end of the first swing member being pivotally connected to the seat cushion, the upper end of the second swing member being fixed to the seat cushion, and both sides of the second swing member being pivotally connected to the oar rod, the two oar rods respectively extending upwards to both sides of the seat cushion, and both ends of the connecting member being pivotally connected to the first swing member and the second swing member respectively.

2. The rowing machine according to claim 1, wherein, The seat cushion assembly further includes a connecting rod, the seat cushion being fixed to the connecting rod, one end of the connecting rod away from the footrest being fixedly connected with a pivot member, the pivot member being fixedly sleeved with a rotating shaft, the lower end of the backrest frame being embedded in the pivot member, and the rotating shaft passing through the lower end of the backrest frame, so that the backrest frame swings relative to the seat cushion with the rotating shaft as the axis; the elastic element is a torsion spring, the torsion spring being sleeved outside the rotating shaft, and both ends of the torsion spring being respectively fixed to the backrest frame and the pivot member.

3. The rowing machine according to claim 2, characterized in that, A stop rod is fixedly provided at the lower end of the pivot member on the side away from the seat cushion, and a limit rod is fixedly provided at the bottom of the lower end of the backrest frame, and the stop rod blocks the limit rod.

4. The rowing machine according to any one of claims 1 to 3, characterized in that The backrest frame includes a support rod and backrest rollers, the support rod being connected to swing at one end of the seat cushion, and a plurality of rotatable backrest rollers being connected to both sides of the support rod.

5. The rowing machine according to claim 1, wherein, A limit rod is fixedly provided at the front end of the seat cushion, two limit rollers being fixedly provided on both sides of the limit rod, the limit rollers above both sides of the limit rod being used to support the popliteal fossa, and the feet respectively passing through between the limit rollers on both sides of the limit rod.

6. The rowing machine according to claim 5, characterized in that, The seat cushion assembly further includes a connecting rod, the seat cushion being fixed to the connecting rod, the connecting rod being of a hollow tube structure, the connecting rod penetrating into a first adjusting rod, the limit rod being fixed to the first adjusting rod, a row of threaded holes being further provided on the bottom surface of the connecting rod, the threaded holes being adapted to be screwed and connected with fixing bolts, and the fixing bolts pressing against the first adjusting rod located inside the connecting rod after passing through one of the threaded holes.

7. The rowing machine according to claim 1, wherein, A first limiting portion protruding is fixedly provided at one end of the base away from the footrest, the first swing member being fixedly provided with a second limiting portion, when the first swing member swings towards the front end and downwards of the base, the first limiting portion can block the second limiting portion.

8. The rowing machine according to claim 1, characterized in that, The rowing machine further includes a damper, the damper having a telescopic rod, one end of the damper away from the end where the telescopic rod extends being pivotally connected to the front end of the base, and the telescopic rod of the damper being pivotally connected to the second swing member.

9. The rowing machine according to claim 8, wherein, A second adjusting sleeve is fixed to the front end of the base. A second adjusting rod is properly fitted inside the second adjusting sleeve. The second adjusting rod telescopically moves relative to the second adjusting sleeve. One end of the damper away from the telescopic rod extends and is pivotally connected to the second adjusting rod. A second adjusting bolt is spirally connected to the outside of the second adjusting sleeve inward. The second adjusting rod is provided with a row of adjusting holes. After the second adjusting bolt spirally penetrates into the second adjusting sleeve, it penetrates into one of the adjusting holes.

10. The rowing machine according to claim 1, wherein, The seat cushion assembly further includes a connecting rod. The seat cushion is fixed to the connecting rod. The lower part of the connecting rod is embedded in the first adjusting sleeve. After the connecting rod linearly slides and adjusts relative to the first adjusting sleeve, it is fixed. The first swing member is pivotally connected to the bottom of the first adjusting sleeve. The second swing member is fixed to the first adjusting sleeve.

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