An artificial rowing machine

Abstract

The present invention relates to a simulated rowing machine, including a paddle rowing machine. The paddle rowing machine includes a frame, a foot pedal, a guide rail, a sliding seat, a paddle shaft, a rocker arm, and a pull rod. A surfing base is arranged below the paddle rowing machine. The surfing base includes a bottom plate, a surfing mechanism and a plurality of first springs arranged between the bottom plate and the frame. The surfing mechanism includes a rotating shaft connected to the paddle shaft through a gear transmission mechanism, an upper surfing frame and a lower surfing frame hinged through the rotating shaft, and a pulling rope for driving the paddle rowing machine to swing. One end of the pulling rope is fixedly arranged at the front end of the frame, and the other end of the pulling rope is wound around the rotating shaft for several turns and then fixedly connected to the rear end of the frame. The present invention can simulate the water flow fluctuations and wind waves during water sports and is more suitable for balance training during surfing.

Description

Technical Field

[0001] The present invention belongs to the field of fitness equipment, and particularly relates to a simulated rowing machine. Background Art

[0002] The oar-type rowing machine is a fitness equipment that simulates rowing sports and can exercise the muscles of the legs, waist, upper limbs, chest and back. Each time it is rowed, the upper limbs, lower limbs, waist and abdomen, and back will complete a complete contraction and extension during this process, so as to achieve the purpose of aerobic exercise of the whole body muscles.

[0003] Currently, the simulated rowing machines generally include a frame, a foot pedal, a guide rail, a sliding seat, an oar or a pulling rope, and a damping device arranged on the frame. Therefore, according to the different sliding forms of the simulated rowing machine, it is divided into two categories: 1) the oar-type rowing machine that uses an oar to perform rowing sports, and its damping device is connected to the telescopic rod of the oar and the frame; 2) the rope-pulling type oar rowing machine that uses a pulling rope to perform rowing sports, and its damping device is diverse, including water resistance, air resistance, etc.

[0004] However, these two types of oar rowing machines can only simulate the sliding action and cannot simulate the water flow fluctuations and wind waves during water sports, let alone be used for balance training during surfing. Therefore, there is an urgent need in the market for a simulated rowing machine that can simulate water surfing sports and even perform balance training during surfing to meet people's needs. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide a simulated rowing machine. When rowing and exercising, the hull of the rowing machine will not only vibrate due to gravity, but also swing with the rowing action, so as to simulate the rowing experience when the water flow fluctuates and the wind and waves impact the hull during water sports. In addition, the swing of the present invention is driven by the rowing oar, and surfing has regularity, which can be used for balance training in surfing.

[0006] To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0007] A simulated rowing machine, including a paddle rowing machine, the paddle rowing machine comprising a frame, a foot pedal, a guide rail, a sliding seat and a rowing mechanism, the rowing mechanism comprising a rowing shaft rotatably provided on the frame, rocker arms provided at both ends of the rowing shaft, and a pull rod connecting the rocker arms and the frame. A surfing base is provided below the paddle rowing machine, the surfing base comprising a bottom plate, a surfing mechanism and a plurality of first springs provided between the bottom plate and the frame; the surfing mechanism comprises a rotating shaft connected to the rowing shaft through a gear transmission mechanism, an upper surfing frame and a lower surfing frame hinged through the rotating shaft, and a pull rope for driving the paddle rowing machine to swing. One end of the pull rope is fixedly provided at the front end of the frame, and the other end of the pull rope is wound around the rotating shaft for several turns and then fixedly connected to the rear end of the frame.

[0008] As a further technical solution, the lower surfing frame is provided on the bottom plate through a spring assembly, and the upper surfing frame is fixedly provided on the frame.

[0009] As a further technical solution, the gear transmission mechanism adopts a one-way gear transmission mechanism;

[0010] The one-way gear transmission mechanism includes a forward surfing transmission mechanism and a backward surfing transmission mechanism; a two-way reset mechanism is provided on the rotating shaft.

[0011] As a further technical solution, the forward surfing transmission mechanism includes a forward guiding shaft rotatably provided on the upper surfing frame, a forward rowing gear slidably provided on the rowing shaft and connected to the rowing shaft through a forward spring, a forward transmission gear and a forward transmission half-gear fixedly provided on the forward guiding shaft, a forward rotating shaft gear fixedly provided on the rotating shaft, and a forward clutch mechanism for driving the forward rowing gear to slide; the forward rowing gear is meshed and connected with the forward transmission gear, and the forward transmission half-gear is meshed and connected with the forward rotating shaft gear.

[0012] As a further technical solution, the forward rowing gear adopts a one-way gear, one side of the teeth of the one-way gear is a straight edge, and the other side is a bevel edge;

[0013] A forward sliding hole is provided on the forward rowing gear, and a forward sliding block slidably matched with the forward sliding hole is provided on the rowing shaft.

[0014] As a further technical solution, the forward clutch mechanism includes a forward threaded hole provided on the forward sliding block, a forward through hole provided on the top wall of the forward sliding block, a forward threaded rod provided in the forward threaded hole through a thread, a forward downward positioning block and a forward upward displacement driving block provided on the forward threaded rod, and a forward handle is provided after the top end of the forward threaded rod passes through the forward through hole.

[0015] The front downward positioning block is arranged above the front slider and abuts against the front slider, and the front upward displacement driving block is arranged at the top of the front sliding hole and abuts against the top wall of the front sliding hole.

[0016] As a further technical solution, the backward surfing transmission mechanism includes a first backward guiding shaft and a second backward guiding shaft rotatably arranged on the upper surfing frame, a backward rowing gear slidably arranged on the rowing shaft and connected with the rowing shaft through a backward spring, a first backward transmission gear fixedly arranged on the first backward guiding shaft, a second backward transmission gear and a backward transmission half gear fixedly arranged on the second backward guiding shaft, a backward rotating shaft gear fixedly arranged on the rotating shaft, and a backward clutch mechanism for driving the backward rowing gear to slide; the backward rowing gear and the second backward transmission gear are respectively meshed and connected with the first backward transmission gear, and the backward transmission half gear is meshed and connected with the backward rotating shaft gear.

[0017] As a further technical solution, the backward rowing gear is a one-way gear, one side edge of the teeth of the one-way gear is a straight edge, and the other side edge is an inclined edge;

[0018] A backward sliding hole is arranged on the backward rowing gear, and a backward slider slidably matched with the backward sliding hole is arranged on the rowing shaft.

[0019] As a further technical solution, the backward clutch mechanism includes a backward threaded hole arranged on the backward slider, a backward through hole arranged on the top wall of the backward slider, a backward threaded rod arranged in the backward threaded hole by thread, a backward downward positioning block and a backward upward displacement driving block arranged on the backward threaded rod, and a backward handle is arranged after the top end of the backward threaded rod passes through the backward through hole.

[0020] The backward downward positioning block is arranged above the backward slider and abuts against the backward slider, and the backward upward displacement driving block is arranged at the top of the backward sliding hole and abuts against the top wall of the backward sliding hole.

[0021] As a further technical solution, the two-way reset mechanism includes a mounting plate and a limit plate fixedly arranged on the lower surf rack and rotatably connected to the rotating shaft, a fixing pin fixedly arranged on the mounting plate, a torsion spring shift block arranged between the mounting plate and the limit plate, a sleeve sleeved on the rotating shaft, and a torsion spring sleeved on the sleeve; the torsion spring shift block includes two side plates sleeved on the rotating shaft, and a connecting rod connecting the two side plates, the two ends of the sleeve respectively abut against the two side plates, at least one of the two side plates is provided with a slot, a protrusion is fixedly arranged on the rotating shaft, the protrusion is arranged in the slot and adapted to the slot; the two ends of the torsion spring respectively bypass the connecting rod and abut against the fixing pin, and the two ends of the torsion spring are respectively arranged on both sides of the connecting rod and the fixing pin.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention arranges a first spring and a spring assembly between the bottom plate and the paddle rowing machine. When a person sits on the paddle rowing machine, the paddle rowing machine will tilt and become unbalanced due to uneven gravity, thereby achieving a rowing experience that simulates the vibration of the hull caused by water flow fluctuations during water sports. In addition, it can also achieve balance training of rowing on a stable water surface.

[0024] The present invention sets a surfing mechanism between the bottom plate and the paddle rowing machine, and utilizes the rotation of the paddle shaft to drive the rotation of the rotating shaft during the paddling process, so that the pull rope is wound around the rotating shaft to extend one end of the pull rope and shorten the other end, so as to pull the paddle rowing machine to swing, thereby providing a new experience of water surfing during rowing. Since the tilting of the present invention is driven by the paddle mechanism, and the tilting height is determined by the half gear meshing with the rotating shaft gear, its surfing frequency is fixed, which belongs to a regular surfing rhythm, and the surfing amplitude is fixed, so it is beneficial for athletes to perform balance training of rowing during surfing, thereby increasing the scope of application of the present invention.

[0025] The present invention is provided with a forward surfing transmission mechanism and a rearward unidirectional surfing transmission mechanism, and the two surfing transmission mechanisms are used to drive the rotating shaft to rotate forwardly or reversely, thereby respectively simulating the surfing effects caused by wind and waves impacting the front end of the paddle rowing machine and the rear end of the paddle rowing machine.

[0026] The forward paddling gear and the backward paddling gear of the present invention are both one-way gears, so that only when the rocker arm is pulled backward can the rotating shaft be driven to rotate, so that one end of the paddle rowing machine is tilted up, while when the rocker arm is reset forward, the surfing cannot be driven to rotate, thereby failing to drive the end of the paddle rowing machine to tilt up.

[0027] In the present invention, the gears meshing with the forward rotating shaft gear and the backward rotating shaft gear are both set as half gears, and a two-way reset mechanism is arranged on the rotating shaft. Whether the rotating shaft rotates forward or backward, the teeth of the half gear driving the rotation of the rotating shaft are disengaged from the rotating shaft gear, and the rotating shaft can be centered and reset under the action of the two-way reset mechanism to prepare for the next surfing simulation.

[0028] In addition, the present invention also provides a forward clutch mechanism and a backward clutch mechanism for controlling the upwind surfing mode, the downwind surfing mode or the no-surfing mode. Brief Description of the Drawings

[0029] Figure 1 is a perspective view of an embodiment of the present invention;

[0030] Figure 2 is a top view of an embodiment of the present invention;

[0031] Figure 3 is Figure 2 a sectional view taken along A-A;

[0032] Figure 4 is Figure 2 a sectional view taken along B-B;

[0033] Figure 5 is Figure 2 a sectional view taken along C-C;

[0034] Figure 6 is a perspective view of the two-way reset mechanism of the present invention (with the rotating shaft and the lower surfing frame);

[0035] Figure 7 is a sectional view of the two-way reset mechanism of the present invention (with the rotating shaft and the lower surfing frame).

[0036] In the figure: 1. Paddle rowing machine, 2. Frame, 3. Pedal, 4. Guide rail, 5. Slide seat, 6. Paddling mechanism, 7. Paddling shaft, 8. Rocker arm, 9. Pull rod, 10. Surfing base, 11. Bottom plate, 12. First spring, 13. Rotating shaft; 14. Upper surfing frame, 15. Lower surfing frame, 16. Pulling rope, 17. Spring assembly, 18. Second spring, 19. Upper rod, 20. Lower rod, 21. Forward surfing transmission mechanism, 22. Rearward surfing transmission mechanism; 23. Two-way reset mechanism, 24. Forward guiding shaft, 25. Forward paddling gear, 26. Forward transmission gear, 27. Forward transmission half gear, 28. Forward rotating shaft gear, 29. Forward clutch mechanism; 30. Forward sliding hole, 31. Forward slider, 32. Forward mounting block, 33. Forward spring, 34. Forward threaded rod, 35. Forward lower positioning block, 36. Forward upper disengaging drive block, 37. Forward handle, 38. First rearward guiding shaft, 39. Second rearward guiding shaft, 40. Rearward paddling gear, 41. First rearward transmission gear, 42. Second rearward transmission gear, 43. Rearward transmission half gear, 44. Rearward rotating shaft gear, 45. Rearward clutch mechanism; 46. Rearward sliding hole, 47. Rearward slider, 48. Rearward mounting block, 49. Rearward spring, 50. Rearward threaded rod, 51. Rearward lower positioning block, 52. Rearward upper disengaging drive block, 53. Rearward handle, 54. Mounting plate, 55. Limiting plate, 56. Fixed pin, 57. Torsion spring dial block, 58. Bush, 59. Torsion spring; 60. Side plate, 61. Connecting rod, 62. Bump. Detailed implementation manner

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] As Figure 1-7 shown in an embodiment of a simulated rowing machine of the present invention, which includes a paddle rowing machine 1. The paddle rowing machine 1 includes a frame 2, a footrest 3, a guide rail 4, a sliding seat 5, and a rowing mechanism 6. The rowing mechanism 6 includes a rowing shaft 7 rotatably provided on the frame 2, rocker arms 8 provided at both ends of the rowing shaft 7, and a pull rod 9 connecting the rocker arms 8 and the frame 2. It is characterized in that a surfing base 10 is provided below the paddle rowing machine 1. The surfing base 10 includes a bottom plate 11, a surfing mechanism provided between the bottom plate 11 and the frame 2, and a plurality of first springs 12; the surfing mechanism includes a rotating shaft 13 connected to the rowing shaft 7 through a gear transmission mechanism, an upper surfing frame 14 and a lower surfing frame 15 hinged through the rotating shaft 13, and a pull rope 16 for driving the paddle rowing machine 1 to swing. One end of the pull rope 16 is fixedly provided at the front end of the frame 2, and the other end of the pull rope 16 is wound around the rotating shaft 13 for several turns and then fixedly connected to the rear end of the frame 2. In the present invention, by providing the first springs 12 and the spring assembly 17 between the bottom plate 11 and the paddle rowing machine 1, when a person sits on the paddle rowing machine 1, the paddle rowing machine 1 will tilt and lose balance due to uneven gravity, so as to realize the rowing experience of simulating the hull vibration caused by water flow fluctuation during water sports. The present invention provides a surfing mechanism between the bottom plate 11 and the paddle rowing machine 1, and uses the rotation of the rowing shaft 7 during the rowing process to drive the rotation of the rotating shaft 13, so as to use the winding of the pull rope 16 on the rotating shaft 13 to extend one end of the pull rope 16 and shorten the other end, so as to pull the paddle rowing machine 1 to swing, thus providing a brand-new experience of surfing on water during rowing. Since the tilting of the present invention is driven by the rowing mechanism 6, and the tilting height is determined by the half gear meshing with the rotating shaft 13, therefore, its surfing frequency is fixed, belonging to a regular surfing rhythm, and the surfing amplitude is fixed. Therefore, it is beneficial for the athletes to carry out balance training during rowing in the surfing process, thereby increasing the application range of the present invention.

[0042] As an embodiment of a rowing machine of the present invention, the guide rail 4 is fixedly arranged on the frame 2, the sliding seat 5 is slidably arranged on the guide rail 4, there are 2 pedal boards 3, which are fixedly arranged on the frame 2 and are respectively arranged on both sides of the guide rail 4, and the rowing shaft 7 of the rowing mechanism 6 is rotatably arranged on the frame 2.

[0043] As an embodiment of a rowing machine of the present invention, the pull rod 9 adopts a hydraulic damper, and both ends of the pull rod 9 are respectively hinged to the frame 2 and the rocker arm 8.

[0044] As an embodiment of a rowing machine of the present invention, the first springs 12 are arranged at both ends of the bottom plate 11; both ends of the first springs 12 are respectively fixedly connected to the frame 2 and the bottom plate 11.

[0045] In an embodiment of a rowing machine of the present invention, the lower surfing frame is arranged on the bottom plate 11 through a spring assembly 17, and the upper surfing frame 14 is fixedly arranged on the frame 2. The spring assembly 17 includes a telescopic rod, a second spring 18 sleeved on the telescopic rod. The telescopic rod includes an upper rod 19 fixedly arranged on the lower surfing frame, a lower rod 20 fixedly arranged on the bottom plate 11, a slot is arranged on the lower rod 20, and the upper rod 19 is inserted into the slot and is slidably matched with the slot.

[0046] In an embodiment of a rowing machine of the present invention, the gear transmission mechanism adopts a one-way gear transmission mechanism; a two-way reset mechanism 23 is arranged on the rotating shaft 13; both the front surfing transmission mechanism and the rear surfing transmission mechanism of the present invention adopt a one-way surfing transmission mechanism, so that only when the rocker arm 8 is pulled backward can the rotating shaft 13 be driven to rotate, causing one end of the rowing machine 1 to tilt up, and the surfing cannot be driven to rotate during the forward reset process of the rocker arm 8, so that the end of the rowing machine 1 cannot be driven to tilt up. By arranging the two-way reset mechanism 23 on the rotating shaft 13 of the present invention, whether the rotating shaft 13 rotates forward or backward, the teeth of the semi-gear driving the rotation of the rotating shaft 13 are disengaged from the gear of the rotating shaft 13, and the rotating shaft 13 can be centered and reset under the action of the two-way reset mechanism 23 to prepare for the next surfing simulation.

[0047] In an embodiment of a rowing machine of the present invention, the one-way gear transmission mechanism includes a forward surfing transmission mechanism 21 and a backward surfing transmission mechanism 22. The present invention arranges the forward surfing transmission mechanism 21 and the backward one-way surfing transmission mechanism, and respectively drives the rotating shaft 13 to rotate forward or backward through these two surfing transmission mechanisms, so as to respectively simulate the surfing performance brought by the wind and wave impacting the front end of the rowing machine 1 and the wind and wave impacting the rear end of the rowing machine 1.

[0048] An embodiment of a rowing machine simulation of the present invention, the forward surfing transmission mechanism 21 includes a forward guiding shaft 24 rotatably arranged on the upper surfing frame 14, a forward rowing gear 25 slidably arranged on the rowing shaft 7 and connected to the rowing shaft 7 through a forward spring 33, a forward transmission gear 26 and a forward transmission half-gear 27 fixedly arranged on the forward guiding shaft 24, a forward rotating shaft gear 28 fixedly arranged on the rotating shaft 13, and a forward clutch mechanism 29 for driving the forward rowing gear 25 to slide; the forward rowing gear 25 is meshed and connected with the forward transmission gear 26, and the forward transmission half-gear 27 is meshed and connected with the forward rotating shaft gear 28.

[0049] An embodiment of a rowing machine simulation of the present invention, the forward rowing gear 25 is a one-way gear, one side of the teeth of the one-way gear is a straight edge, and the other side is a bevel edge;

[0050] A forward sliding hole 30 is arranged on the forward rowing gear 25, and a forward sliding block 31 which is slidably matched with the forward sliding hole 30 is arranged on the rowing shaft 7.

[0051] A forward mounting block 32 is fixedly arranged on one side of the forward rowing gear 25. The top end of the forward spring 33 is fixedly connected to the rowing shaft 7, and the bottom end is fixedly connected to the forward mounting block 32.

[0052] An embodiment of a rowing machine simulation of the present invention, the forward clutch mechanism 29 includes a forward threaded hole arranged on the forward sliding block 31 and a forward through hole arranged on the top wall of the forward sliding block 31. A forward threaded rod 34 is arranged in the forward threaded hole through threads. A forward downward positioning block 35 and a forward upward displacement driving block 36 are arranged on the forward threaded rod 34. The top end of the forward threaded rod 34 passes through the forward through hole and then a forward handle 37 is arranged.

[0053] The forward downward positioning block 35 is arranged above the forward sliding block 31 and abuts against the forward sliding block 31, and the forward upward displacement driving block 36 is arranged at the top of the forward sliding hole 30 and abuts against the top wall of the forward sliding hole 30.

[0054] An embodiment of a rowing machine of the present invention, the backward surfing transmission mechanism 22 includes a first backward guiding shaft 38 and a second backward guiding shaft 39 rotatably arranged on the upper surfing frame 14, a backward rowing gear 40 slidably arranged on the rowing shaft 7 and connected to the rowing shaft 7 through a backward spring 49, a first backward transmission gear 41 fixedly arranged on the first backward guiding shaft 38, a second backward transmission gear 42 and a backward transmission half gear 43 fixedly arranged on the second backward guiding shaft 39, a backward rotating shaft gear 44 fixedly arranged on the rotating shaft 13, and a backward clutch mechanism 45 for driving the backward rowing gear 40 to slide; the backward rowing gear 40 and the second backward transmission gear 42 are respectively meshed and connected with the first backward transmission gear 41, and the backward transmission half gear 43 is meshed and connected with the backward rotating shaft gear 44.

[0055] An embodiment of a rowing machine of the present invention, the backward rowing gear 40 adopts a one-way gear, one side edge of the teeth of the one-way gear is a straight edge, and the other side edge is a bevel edge;

[0056] A backward sliding hole 46 is arranged on the backward rowing gear 40, and a backward sliding block 47 slidably matched with the backward sliding hole 46 is arranged on the rowing shaft 7.

[0057] A backward mounting block 48 is fixedly arranged on one side of the backward rowing gear 40, the top end of the backward spring 49 is fixedly connected to the rowing shaft 7, and the bottom end is fixedly connected to the backward mounting block 48.

[0058] An embodiment of a rowing machine of the present invention, the backward clutch mechanism 45 includes a backward threaded hole arranged on the backward sliding block 47, a backward through hole arranged on the top wall of the backward sliding block 47, a backward threaded rod 50 is arranged in the backward threaded hole through threads, a backward downward positioning block 51 and a backward upward displacement driving block 52 are arranged on the backward threaded rod 50, and a backward handle 53 is arranged after the top end of the backward threaded rod 50 passes through the backward through hole.

[0059] The backward downward positioning block 51 is arranged above the backward sliding block 47 and abuts against the backward sliding block 47, and the backward upward displacement driving block 52 is arranged at the top of the backward sliding hole 46 and abuts against the top wall of the backward sliding hole 46.

[0060] An embodiment of a rowing machine of the present invention, there are 2 pulling ropes 16, which are respectively symmetrically arranged on both sides of the bidirectional reset mechanism 23 to avoid the situation that the rowing machine 1 tilts during the surfing process caused by the pulling rope 16 being biased.

[0061] An embodiment of a rowing machine of the present invention. The bi-directional reset mechanism includes a mounting plate 54 and a limiting plate 55 fixedly arranged on the lower surfing frame 15 and rotatably connected to the rotating shaft 13, a fixing pin 56 fixedly arranged on the mounting plate 54, a torsion spring block 57 arranged between the mounting plate 54 and the limiting plate 55, a bushing 58 sleeved on the rotating shaft 13, and a torsion spring 59 sleeved on the bushing 58; the torsion spring block 57 includes two side plates 60 sleeved on the rotating shaft 13 and a connecting rod 61 connecting the two side plates 60. The two ends of the bushing 58 are respectively abutted against the two side plates 60. At least one of the two side plates 60 is provided with a clamping groove. A convex block 62 is fixedly arranged on the rotating shaft 13. The convex block 62 is arranged in the clamping groove and is adapted to the clamping groove; the two ends of the torsion spring 59 respectively bypass the connecting rod 61 and are abutted against the fixing pin 56, and the two ends of the torsion spring 59 are respectively arranged on both sides of the connecting rod 61 and the fixing pin 56. During use, when the rotating shaft 13 rotates, the torsion spring block 57 is driven to rotate by the convex block 62. Since the torsion spring block 57 is arranged between the two extension ends of the torsion spring 59, therefore, no matter whether the rotating shaft 13 and the torsion spring block 57 rotate forward or backward, the extension ends of the torsion spring 59 are not touched. When the external force is removed, the torsion spring block 57 and the rotating shaft 13 are driven to automatically return to the center and reset under the action of the torsion spring 59.

[0062] The usage method of the present invention:

[0063] A: In the case of not requiring the surfing mode:

[0064] Rotate the forward handle 37. Under the action of the thread, the forward threaded rod 34 moves upward. The forward upward off-position driving block 36 drives the forward rowing gear 25 to move upward, so that the forward rowing gear 25 disengages from the forward transmission gear 26; thus, the forward surfing mechanism loses its surfing function.

[0065] Rotate the backward handle 53. Under the action of the thread, the backward threaded rod 50 moves upward. The backward upward off-position driving block 52 drives the backward rowing gear 40 to move upward, so that the backward rowing gear 40 disengages from the first backward transmission gear 41; thus, the backward surfing mechanism loses its surfing function.

[0066] B: In the forward surfing mode:

[0067] Rotate the backward handle 53. Under the action of the thread, the backward threaded rod 50 moves upward. The backward upward off-position driving block 52 drives the backward rowing gear 40 to move upward, so that the backward rowing gear 40 disengages from the first backward transmission gear 41; thus, the backward surfing mechanism loses its surfing function.

[0068] Rotate the forward handle 37. Under the action of the thread, the forward threaded rod displaces downward. When the forward downward positioning block 35 displaces downward and abuts against the forward slider 31, the displacement is in place; the forward paddle gear 25 meshes with the forward transmission gear 26; the forward surfing mechanism can be driven to perform surfing motion;

[0069] At this time, rotate the rocker arm 8 backward. The paddle shaft 7 drives the forward paddle gear 25 to rotate. The forward paddle gear 25 drives the forward transmission gear 26 to rotate, thereby driving the forward guide shaft and the forward transmission half gear 27 to rotate. The forward transmission half gear 27 drives the forward rotating shaft gear 28 to rotate, thereby driving the rotating shaft 13 to rotate. During the rotation of the rotating shaft 13, the front end of the pull rope 16 is untangled and the rear end starts to be wound, so that the front end of the pull rope 16 extends and the rear end shortens, driving the front end of the paddle rowing machine 1 to rise and the rear end to lower, simulating the process of the wind and waves impacting the paddle rowing machine 1 against the wind; when the forward transmission half gear 27 rotates to a certain extent, the forward transmission half gear 27 disengages from the forward rotating shaft gear 28. At this time, under the action of the torsion spring 59 of the bi-directional reset mechanism 23, the torsion spring dial block 57 drives the rotating shaft 13 to be centered, and the rotating shaft 13 rotates and resets, so that the front end of the pull rope 16 is wound and the rear end is untangled, and the pull rope 16 resets to drive the front end and the rear end of the paddle rowing machine 1 to reset; simulating the process of the wind and waves retreating, and at this time, a complete simulation of surfing against the wind is completed;

[0070] When the rocker arm 8 drives the paddle shaft 7 to reset forward, under the action of the inclined side, the forward paddle gear 25 displaces upward and compresses the forward spring 33 to complete the reverse rotation and reset of the forward paddle gear 25; it will not have any impact on the rotating shaft 13;

[0071] C: In the backward surfing mode:

[0072] Rotate the forward handle 37. Under the action of the thread, the forward threaded rod 34 displaces upward. The forward upward off-position driving block 36 drives the forward paddle gear 25 to move upward, so that the forward paddle gear 25 disengages from the forward transmission gear 26; thus, the forward surfing mechanism loses its surfing function;

[0073] Rotate the backward handle 53. Under the action of the thread, the backward threaded rod 50 displaces downward. When the backward downward positioning block 51 displaces downward and abuts against the backward slider 47, the displacement is in place; the backward paddle gear 40 meshes with the first backward transmission gear 41; the backward surfing mechanism can be driven to perform surfing motion;

[0074] At this time, turn the rocker arm 8 backward, the rowing shaft 7 drives the backward rowing gear 40 to rotate, the backward rowing gear 40 drives the first backward transmission gear 41 to rotate, the rotation of the first backward transmission gear 41 drives the second backward transmission gear 42 to rotate, thereby driving the second backward guiding shaft and the backward transmission half gear 43 to rotate, the backward transmission half gear 43 drives the backward rotating shaft gear 44 to rotate, thereby driving the rotating shaft 13 to rotate. During the rotation of the rotating shaft 13, the rear end of the pulling rope 16 is untied from the winding and the front end starts to be wound, so that the rear end of the pulling rope 16 is extended and the front end is shortened, driving the rear end of the oar rowing machine 1 to rise and the front end to lower, simulating the process of the wind and waves impacting the oar rowing machine 1 against the wind; and when the backward transmission half gear 43 rotates to a certain extent, the backward transmission half gear 43 disengages from the backward rotating shaft gear 44. At this time, under the action of the torsion spring 59 of the bi-directional reset mechanism 23, the torsion spring block 57 drives the rotating shaft 13 to be centered, and the rotating shaft 13 rotates and resets, so that the rear end of the pulling rope 16 is wound and the front end is untied from the winding, and the pulling rope 16 resets to drive the rear end and the front end of the oar rowing machine 1 to reset; simulating the process of the wind and waves retreating, and at this time, a complete simulation of surfing against the wind is completed.

[0075] When the rocker arm 8 drives the rowing shaft 7 to reset forward, under the action of the inclined side, the backward rowing gear 40 moves upward and backward to compress the backward spring 49 to complete the reverse rotation reset of the backward rowing gear 40; it will not have any impact on the rotating shaft 13.

[0076] The above-described embodiments are only the preferred embodiments of the present invention, rather than an exhaustive list of the feasible embodiments of the present invention. For those of ordinary skill in the art, any obvious changes made without departing from the principle and spirit of the present invention should be considered to be included within the scope of the claims of the present invention.

Claims

1. An imitation rowing machine, including a paddle rowing machine (1), the paddle rowing machine (1) includes a frame (2), a foot pedal (3), a guide rail (4), a sliding seat (5) and a rowing mechanism (6), the rowing mechanism (6) includes a rowing shaft (7) rotatably arranged on the frame (2), rocker arms (8) arranged at both ends of the rowing shaft (7), and a pull rod (9) connecting the rocker arms (8) and the frame (2). It is characterized in that A surfing base (10) is arranged below the paddle rowing machine (1), the surfing base (10) includes a bottom plate (11), a surfing mechanism and a plurality of first springs (12) arranged between the bottom plate (11) and the frame (2); the surfing mechanism includes a rotating shaft (13) connected to the rowing shaft (7) through a gear transmission mechanism, an upper surfing frame (14) and a lower surfing frame (15) hinged through the rotating shaft (13), and a pull rope (16) for driving the paddle rowing machine (1) to swing, one end of the pull rope (16) is fixedly arranged at the front end of the frame (2), and the other end of the pull rope (16) is wound around the rotating shaft (13) for several turns and then fixedly connected to the rear end of the frame (2).

2. An imitation rowing machine according to claim 1 It is characterized in that The lower surfing frame is arranged on the bottom plate (11) through a spring assembly (17), and the upper surfing frame (14) is fixedly arranged on the frame (2).

3. An imitation rowing machine according to claim 1 It is characterized in that The gear transmission mechanism adopts a one-way gear transmission mechanism; the one-way gear transmission mechanism includes a forward surfing transmission mechanism (21) and a backward surfing transmission mechanism (22); a two-way reset mechanism (23) is arranged on the rotating shaft (13).

4. An imitation rowing machine according to claim 3 It is characterized in that The forward surfing transmission mechanism (21) includes a forward guiding shaft (24) rotatably arranged on the upper surfing frame (14), a forward rowing gear (25) slidably arranged on the rowing shaft (7) and connected to the rowing shaft (7) through a forward spring (33), a forward transmission gear (26) and a forward transmission half gear (27) fixedly arranged on the forward guiding shaft (24), a forward rotating shaft gear (28) fixedly arranged on the rotating shaft (13), and a forward clutch mechanism (29) for driving the forward rowing gear (25) to slide; the forward rowing gear (25) is meshed and connected with the forward transmission gear (26), and the forward transmission half gear (27) is meshed and connected with the forward rotating shaft gear (28).

5. An imitation rowing machine according to claim 4 It is characterized in that The forward rowing gear (25) adopts a one-way gear, one side of the teeth of the one-way gear is a straight edge, and the other side is an inclined edge; A forward sliding hole (30) is arranged on the forward rowing gear (25), and a forward sliding block (31) slidably matched with the forward sliding hole (30) is arranged on the rowing shaft (7).

6. An imitation rowing machine according to claim 5 It is characterized in that the forward clutch mechanism (29) includes a forward threaded hole provided on the forward slider (31), a forward through hole provided on the top wall of the forward slider (31), a forward threaded rod (34) arranged in the forward threaded hole by means of threads, a forward downward positioning block (35) and a forward upward displacement driving block (36) arranged on the forward threaded rod (34), a forward handle (37) is arranged after the top end of the forward threaded rod (34) passes through the forward through hole, the forward downward positioning block (35) is arranged above the forward slider (31) and abuts against the forward slider (31), and the forward upward displacement driving block (36) is arranged at the top of the forward sliding hole (30) and abuts against the top wall of the forward sliding hole (30).

7. An imitation rowing machine according to claim 3 It is characterized in that the backward surfing transmission mechanism (22) includes a first backward guiding shaft (38) and a second backward guiding shaft (39) rotatably arranged on the upper surfing frame (14), a backward rowing gear (40) slidably arranged on the rowing shaft (7) and connected with the rowing shaft (7) through a backward spring (49), a first backward transmission gear (41) fixedly arranged on the first backward guiding shaft (38), a second backward transmission gear (42) and a backward transmission half gear (43) fixedly arranged on the second backward guiding shaft (39), a backward rotating shaft gear (44) fixedly arranged on the rotating shaft (13), and a backward clutch mechanism (45) for driving the backward rowing gear (40) to slide; the backward rowing gear (40) and the second backward transmission gear (42) are respectively meshed and connected with the first backward transmission gear (41), and the backward transmission half gear (43) is meshed and connected with the backward rotating shaft gear (44).

8. An imitation rowing machine according to claim 7 It is characterized in that the backward rowing gear (40) adopts a one-way gear, one side edge of the teeth of the one-way gear is a straight edge, and the other side edge is an inclined edge; a backward sliding hole (46) is arranged on the backward rowing gear (40), and a backward slider (47) slidably matched with the backward sliding hole (46) is arranged on the rowing shaft (7).

9. An imitation rowing machine according to claim 8 It is characterized in that the backward clutch mechanism (45) includes a backward threaded hole provided on the backward slider (47), a backward through hole provided on the top wall of the backward slider (47), a backward threaded rod (50) arranged in the backward threaded hole by means of threads, a backward downward positioning block (51) and a backward upward displacement driving block (52) arranged on the backward threaded rod (50), a backward handle (53) is arranged after the top end of the backward threaded rod (50) passes through the backward through hole, the backward downward positioning block (51) is arranged above the backward slider (47) and abuts against the backward slider (47), and the backward upward displacement driving block (52) is arranged at the top of the backward sliding hole (46) and abuts against the top wall of the backward sliding hole (46).

10. A simulated rowing machine according to claim 3, characterized in that, the bi-directional reset mechanism includes a mounting plate (54) and a limiting plate (55) fixedly arranged on the lower surfacing frame (15) and rotatably connected to the rotating shaft (13), a fixing pin (56) fixedly arranged on the mounting plate (54), a torsion spring block (57) arranged between the mounting plate (54) and the limiting plate (55), a bushing (58) sleeved on the rotating shaft (13), and a torsion spring (59) sleeved on the bushing (58); the torsion spring block includes two side plates (60) sleeved on the rotating shaft (13) and a connecting rod (61) connecting the two side plates (60), both ends of the bushing (58) are respectively abutted against the two side plates (60), at least one of the two side plates (60) is provided with a card slot, a convex block (62) is fixedly arranged on the rotating shaft (13), and the convex block (62) is arranged in the card slot and is adapted to the card slot; both ends of the torsion spring (59) respectively bypass the connecting rod (61) and are abutted against the fixing pin (56), and both ends of the torsion spring (59) are respectively arranged on both sides of the connecting rod (61) and the fixing pin (56).

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