A dual-purpose rowing machine

Abstract

This invention discloses a dual-purpose rowing machine, comprising: a seat frame; a rowing paddle assembly including two paddles located on opposite sides of the seat frame; and a rope pulling device including a rope, a front fixed pulley, a double movable pulley, and a double fixed pulley. The double fixed pulley is located above the front fixed pulley, and its rotation direction is perpendicular to the rotation direction of the front fixed pulley. The double movable pulley includes a left movable pulley and a right movable pulley, and the double fixed pulley includes a left fixed pulley and a right fixed pulley. After the rope passes over the front fixed pulley, its two ends extend symmetrically backward, passing over the left movable pulley and the right movable pulley respectively. Then, its two ends fold forward and extend forward, passing over the left fixed pulley and the right fixed pulley respectively. After passing over the left fixed pulley and the right fixed pulley, each end of the rope is connected to a paddle or both ends are connected to a paddle.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, and in particular to a dual-purpose rowing machine. Background Technology

[0002] Rowing machines are a popular type of exercise equipment that allows users to perform full-body exercises that simulate real rowing motions (hereinafter referred to as rowing exercise).

[0003] A typical rowing motion and its working principle are roughly as follows: The user holds the paddle at the end of the aforementioned rope with both hands. When the user pulls the paddle backward, the rope is pulled backward, causing the spool at its head to rotate in the forward direction. This, in turn, drives the rotating component of a resistance device (such as an inertia flywheel, wind resistance impeller, or water resistance impeller) to rotate via a one-way transmission mechanism. Then, when the user releases the force, the aforementioned spool rotates in the reverse direction through the restoring force of the spiral spring that interacts with it. This causes the aforementioned rope to be wound back by the spool and retracted forward, pulling the user and the aforementioned slide forward to reset. This process is repeated continuously.

[0004] Currently, similar rowing machines on the market have the following drawbacks:

[0005] 1. They are mostly single-rope operation methods, which makes it inconvenient to train force, and the tensile strength of a single rope is low and the force is uneven.

[0006] 2. The pull rope is fixedly connected to the paddle and cannot be replaced, thus limiting its use.

[0007] 3. By setting a rope reel to wind up or release the pull rope, the pull rope is prone to tangling and knotting during the winding and releasing process, which affects the use of the equipment. Summary of the Invention

[0008] The purpose of this invention is to provide a dual-purpose rowing machine that is convenient to apply force to, has high stability, and allows for adjustment of the pulling force.

[0009] To achieve the above objectives, the solution of the present invention is: a dual-purpose rowing machine, comprising:

[0010] Seat frame;

[0011] The paddling assembly includes two paddles, which are located on both sides of the main seat frame, and the bottom ends of the paddles are omnidirectionally connected to the main seat frame.

[0012] A rope pulling device includes a rope, a front fixed pulley, a double movable pulley, and a double fixed pulley. The double fixed pulley is located above the front fixed pulley, and its rotation direction is perpendicular to the rotation direction of the front fixed pulley. The double movable pulley includes a left movable pulley and a right movable pulley. The double fixed pulley includes a left fixed pulley and a right fixed pulley. After the rope passes over the front fixed pulley, its two ends extend symmetrically backward, passing over the left movable pulley and the right movable pulley respectively. Then, its two ends fold forward and extend, passing over the left fixed pulley and the right fixed pulley respectively. After passing over the left fixed pulley and the right fixed pulley respectively, the two ends of the rope are each connected to the top of a paddle or simultaneously connected to the top of a paddle.

[0013] The device includes a resistance device and a transmission device. A rear fixed pulley is provided between the double-moving pulley and the transmission device, and the rear fixed pulley is connected to the resistance device through the transmission device.

[0014] Furthermore, both the transmission device and the resistance device are located below the rope pulling device.

[0015] Furthermore, the transmission device includes a main transmission belt, a secondary transmission belt, and a pulley and a flywheel arranged parallel to each other. One end of the main transmission belt is fixedly connected to the pulley and is wound or unwound on the pulley. The other end passes around the rear fixed pulley and is fixedly connected to the double-moving pulley. The drive shaft of the flywheel is connected to the pulley through the secondary transmission belt and is driven by the pulley. A tension spring is provided between the pulley and the main frame of the seat.

[0016] Furthermore, a pressure wheel is provided between the drive shaft of the flywheel and the pulley, and the pressure wheel presses against the upper part of the auxiliary drive belt, so that the auxiliary drive belt is in close contact with the drive shaft of the flywheel.

[0017] Furthermore, the resistance device includes a first magnetic element disposed on the outer periphery of the flywheel and a second magnetic element disposed outside the first magnetic element, with a gap between the first magnetic element and the second magnetic element. The first magnetic element and the second magnetic element cooperate to generate magnetic resistance to limit the rotational speed of the flywheel.

[0018] Furthermore, the second magnetic component is arc-shaped, with a fixed end and a free end at its two ends. The fixed end is fixed below the first magnetic component, and the free end swings towards or away from the first magnetic component.

[0019] Furthermore, it also includes a fine-tuning device, which includes an adjustment knob, an adjustment tube, and an adjustment plate. The adjustment plate is disposed on the second magnetic component, and the adjustment tube is movably disposed on the adjustment plate and drives the adjustment plate to move up and down. A return spring is also connected to the adjustment plate. The adjustment knob drives the second magnetic component to move closer to or away from the first magnetic component through the adjustment tube, the adjustment plate, and the return spring.

[0020] Furthermore, the fine-tuning device also includes a fixing plate, which is fixed above the adjusting plate. The adjusting plate has a through groove, and the fixing plate has a through hole at a position corresponding to the through groove. The adjusting tube includes an outer tube and an inner tube. The outer tube is fixed in the through hole of the fixing plate, and the lower end of the inner tube is a T-shaped end cap. The inner tube passes through the outer tube and the through groove, and the T-shaped end cap abuts against the lower end face of the adjusting plate.

[0021] Furthermore, a guide pulley is provided between the paddle and the pull rope, the pull rope passes around the guide pulley and connects to the paddle, and a rotating component is provided at the guide pulley, the rotating component rotating to drive the paddle to rotate.

[0022] Furthermore, each end of the pull rope is provided with a pull ring, and each of the two pull rings is connected to a paddle or both are connected to the same paddle.

[0023] After adopting the above solution, the beneficial effects of the present invention are as follows:

[0024] 1. The rowing machine achieves a double-rope structure by setting up a symmetrical rope pulling device. The rope pulling device includes multiple sets of fixed pulleys and movable pulleys. The two ends of a single rope pass over the fixed pulleys and movable pulleys and are connected to the paddle. In this case, the use of a single rope to achieve a double-rope setting greatly enhances the pulling force of the mechanism and also improves the stability of the mechanism.

[0025] 2. The combination of the pull rope and the paddle is interchangeable. Both ends of the pull rope can be connected to a paddle at the same time or to a paddle on each side. When each paddle is connected to a paddle, it can meet the user's needs for two-arm training; when both paddles are connected to a paddle at the same time, it can meet the needs for single-arm training.

[0026] 3. The rope pulling device is equipped with both fixed pulleys and movable pulleys. The movable pulleys cooperate with the transmission belt of the transmission mechanism to realize the extension and retraction of the rope. The transmission belt winding replaces the traditional rope winding, keeping the rope in a straight state at all times and avoiding knots caused by rope winding, which would affect the use of the equipment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0028] Figure 2 This is a diagram illustrating the paddling motion state according to an embodiment of the present invention;

[0029] Figure 3 This is a top view of an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the resistance device and transmission device according to an embodiment of the present invention;

[0031] Figure 5This is an exploded view of a fine-tuning device and a resistance device according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the rope-pulling device assembly according to an embodiment of the present invention;

[0033] Figure 7 This is an exploded view of a rope-pulling device according to an embodiment of the present invention.

[0034] Label Explanation:

[0035] 1. Seat main frame; 2. Slide seat; 3. Pedal assembly; 4. Rowing assembly; 5. Rope pulling device; 51. Rope; 52. Front fixed pulley; 53. Double moving pulley; 531. Left moving pulley; 532. Right moving pulley; 54. Double fixed pulley; 541. Left fixed pulley; 542. Right fixed pulley; 55. Guide pulley; 551. Left guide pulley; 552. Right guide pulley; 6. Transmission device; 61. Main drive belt; 62. Secondary drive belt 63. Drive belt; 64. Belt reel; 65. Flywheel; 66. Pressure wheel; 7. Tension spring; 8. Resistance device; 9. First magnetic component; 10. Second magnetic component; 11. Fine-tuning device; 22. Adjusting knob; 33. Return spring; 44. Adjusting plate; 55. Through groove; 66. Fixing plate; 77. Through hole; 88. Outer tube; 9. Inner tube; 10. Rotating component; 11. Rear fixed pulley; 12. Mounting block; 13. Pull ring. Detailed Implementation

[0036] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] This invention provides a dual-purpose rowing machine, such as... Figures 1 to 3 As shown, the system includes a main seat frame 1, a slide seat 2, a pedal assembly 3, a rowing assembly 4, a rope pull device 5, a transmission device 6, a resistance device 7, and a fine-tuning device 8. The slide seat 2 is mounted on the main seat frame 1 and moves back and forth along it. The pedal assembly 3 includes two pedals, one on each side of the main seat frame 1. The rowing assembly 4 includes two rowing paddles, one on each side of the main seat frame 1. The bottom of the paddles is omnidirectionally connected to the main seat frame 1, and the top of the paddles is connected to the rope pull device 5. The rowing assembly 4 achieves tension training by sequentially connecting the rope pull device 5, the transmission device, and the resistance device 7.

[0038] In this design, the transmission device 6, the resistance device 7, and the fine-tuning device 8 are all located below the rope pulling device 5, which makes the entire dual-purpose rowing machine have a triangular structure, making it compact and saving space to the greatest extent.

[0039] like Figure 6 and 7As shown, the rope-pulling device 5 includes a rope 51, a front fixed pulley 52, a double movable pulley 53, and a double fixed pulley 54. The double fixed pulley 54 is located above the front fixed pulley 52, and its rotation direction is perpendicular to the rotation direction of the front fixed pulley 52. ​​The double movable pulley 53 is located behind the front fixed pulley 52. ​​The double movable pulley 53 includes a left movable pulley 531 and a right movable pulley 532, and the double fixed pulley 54 includes a left fixed pulley 541 and a right fixed pulley 542. The rope 51 passes sequentially around the front fixed pulley 52, the double movable pulley 53, and the double fixed pulley 54 and connects to the paddle.

[0040] The specific connection method is as follows: After the pull rope 51 passes over the front fixed pulley 52, its two ends extend symmetrically backward, passing over the left movable pulley 531 and the right movable pulley 532 respectively. Then, its two ends fold forward and extend over the left fixed pulley 541 and the right fixed pulley 542 respectively. After passing over the left fixed pulley 541 and the right fixed pulley 542, the two ends of the pull rope 51 are connected to the paddle. As can be seen from the above connection structure, the paddle pulls the double movable pulley 53 to rotate and slide through the pull rope 51, the front fixed pulley 52, and the double fixed pulleys 54.

[0041] In this design, the combination of the pull rope 51 and the paddle is interchangeable. Each end of the pull rope 51 has a pull ring 12, which connects the pull rope 51 to the paddle. The pull ring 12 can connect each end of the pull rope 51 to a paddle or both ends to the same paddle. When each end is connected to a paddle, the resistance of both paddles is the same, allowing the user to hold the paddles with both hands for arm training. When both ends are connected to a paddle, the paddle provides double the resistance, allowing the user to hold the paddle with one hand for single-arm training.

[0042] like Figure 3 , 6 As shown in Figure 7, this invention also provides an adjustable-angle paddling device, the adjustment of which can meet the training needs of users with different postures. This invention provides a guide pulley 55 between the paddling device and the pull rope 51. The guide pulley 55 includes a left guide pulley 551 and a right guide pulley 552. The two ends of the pull rope 51 pass over the left movable pulley 531 and the right movable pulley 532 respectively, then pass over the left guide pulley 551 and the right guide pulley 552, and then connect to the paddling devices on both sides. A rotating component 9 is provided on the guide pulley 55, and the angle of the paddling device is adjusted by the rotating component 9.

[0043] The transmission device 6 and the rope pulling device 5 are connected by a rear fixed pulley 10, which is fixed to the main seat frame 1 and located between the slide 2 and the transmission device 6. Figure 4As shown, the transmission device 6 includes a main transmission belt 61, a secondary transmission belt 62, and a pulley 63 and a flywheel 64 arranged parallel to each other. The horizontal position of the pulley 63 is slightly lower than that of the flywheel 64. The secondary transmission belt 62 is connected to the drive shafts of the pulley 63 and the flywheel 64 respectively. The rotation of the pulley 63 drives the flywheel 64 to rotate through the secondary transmission belt 62. One end of the main transmission belt 61 is fixedly connected to the pulley 63 and can be wound or unwound on the pulley 63. The other end passes around the rear fixed pulley 10 and is fixedly connected to the double-moving pulley 53. The double-moving pulley 53 slides to stretch the main transmission belt 61, thereby driving the pulley 63 to rotate. A tension spring 66 is provided between the pulley 63 and the seat frame 1. The restoring force of the tension spring 66 can cause the pulley 63 to rotate in the opposite direction. The connection between the double-moving pulley 53 and the main drive belt 61 is as follows: the double-moving pulley 53 is provided with a U-shaped mounting block 11, the left moving pulley 531 and the right moving pulley 532 are placed in the U-shaped opening of the mounting block 11, the two sides of the U-shaped opening of the mounting block 11 are connected to the two ends of the wheel axle of the double-moving pulley 53, and the bottom of the outer side of the mounting block 11 is fixed to the main drive belt 61 by a locking member.

[0044] To prevent the secondary drive belt 62 from loosening during transmission, a pressure wheel 65 is added between the drive shaft of the flywheel 64 and the pulley 63. The pressure wheel 65 is positioned both vertically and horizontally between the drive shaft of the flywheel 64 and the pulley 63. This allows the pressure wheel 65 to press the secondary drive belt 62 down from above, ensuring that the secondary drive belt 62 is tightly attached to the drive shaft of the flywheel 64. This also increases the contact area between the secondary drive belt 62 and the drive shaft of the flywheel 64, increasing friction and effectively preventing the secondary drive belt 62 from loosening.

[0045] The working process of the dual-purpose rowing machine is as follows:

[0046] With each of the two pull rings 12 connected to a paddle: the user sits on the slide seat 2, with both feet on the pedal assembly 3, holding two paddles, then straightens their legs and leans back, pulling the paddles backward. The pull rope 51 is pulled backward, causing the double-acting pulley 53 to slide forward. The double-acting pulley 53 pulls out the main drive belt 61 and drives the winding pulley 63 to rotate counterclockwise. The winding pulley 63 drives the flywheel 64 to rotate via the auxiliary drive belt 62, and the resistance device 7 on the flywheel 64 provides resistance. When the user relaxes, the winding pulley 63 can rotate in the opposite direction due to the restoring force of the tension spring 66, causing the main drive belt to be wound up by the winding pulley 63, driving the double-acting pulley 53 to slide backward and reset. The double-acting pulley 53 pulls the user forward and resets via the pull rope 51. Figure 2 The diagram showing the paddling motion states illustrates that when a user wants to exercise the strength of only one arm, they can connect the two pull rings 12 to the handle on the same side, and the movement process of the mechanism is the same as described above.

[0047] The resistance device 7 described in this invention can be of various types. For example, the resistance of the resistance device 7 can originate from the tension of a coil spring, the elasticity of an elastic rope, etc. This invention does not impose any limitations. The resistance device 7 can also be the magnetic resistance mechanism (hereinafter referred to as the magnetic resistance mechanism) provided in this embodiment. The magnetic resistance mechanism includes a first magnetic element 71 and a second magnetic element 72. The first magnetic element 71 is disposed on the outer periphery of the flywheel 64, and the second magnetic element 72 is disposed on the outer side of the first magnetic element 71. A gap is left between the first magnetic element 71 and the second magnetic element 72, and the gap between the first magnetic element 71 and the second magnetic element 72 determines the magnitude of the magnetic force. The first magnetic element 71 and the second magnetic element 72 cooperate to generate magnetic resistance to limit the rotational speed of the flywheel 64. In this embodiment, the second magnetic element 72 is arc-shaped, and its arc is the same as that of the first magnetic element 71. In addition, the two ends of the second magnetic element 72 are a free end and a fixed end, respectively. The fixed end is fixed below the first magnetic element 71, and the free end swings to move closer to or away from the first magnetic element 71, thereby increasing or decreasing the magnetic resistance.

[0048] like Figure 5 As shown, the resistance of the resistance device 7 can be adjusted by the fine-tuning device 8. The fine-tuning device 8 includes an adjustment knob 81, a fixed plate 85, an adjustment plate 83, an adjustment tube, and a return spring 82. The adjustment tube includes an outer tube 87 and an inner tube 88, with the inner tube 88 movably disposed inside the outer tube 87. An adjusting plate 83 is mounted on the second magnetic component 72 and connected to its free end. A fixing plate 85 is positioned above the adjusting plate 83. The adjusting plate 83 has a through groove 84, and the fixing plate 85 has a through hole 86 at a position corresponding to the through groove 84. An outer tube 87 is fixed inside the through hole 86 of the fixing plate 85. The upper end of the inner tube 88 is connected to the adjusting knob 81, and the lower end passes through the outer tube 87 and the through groove 84 on the adjusting plate 83. Importantly, the lower end of the adjusting tube has a T-shaped end cap, which abuts against the lower end face of the adjusting plate 83. A return spring 82 is also connected to the adjusting plate 83. When the adjusting knob 81 is turned loose or tight, the second magnetic component 72 is moved closer to or further away from the first magnetic component 71 via the adjusting tube, the adjusting plate 83, and the return spring 82, thereby achieving fine adjustment of the magnetic resistance.

[0049] The working principle of the fine-tuning device 8 is as follows:

[0050] When the adjustment knob 81 is tightened, the inner tube 88 moves upward, and the T-shaped end cap of the inner tube 88 abuts against the bottom of the adjustment plate 83 and drives the adjustment plate 83 to move upward. The adjustment plate 83 drives the second magnetic element 72 to approach the first magnetic element 71, the distance between the first magnetic element 71 and the second magnetic element 72 decreases, and the magnetism increases. At this time, the transmission speed of the transmission device 6 decreases to increase the resistance of the paddle. At this time, the return spring 82 is in a stretched state.

[0051] When the adjustment knob 81 is loosened, the inner tube 88 moves downward. At this time, the T-shaped end cap of the inner tube 88 no longer abuts against the adjustment plate 83. The return spring 82 contracts, causing the adjustment plate 83 to move downward and reset. The adjustment plate 83 causes the second magnetic component 72 to move away from the first magnetic component 71. The distance between the first magnetic component 71 and the second magnetic component 72 increases, and the magnetism decreases. At this time, the transmission speed of the transmission device 6 increases to reduce the resistance of the paddle.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. All equivalent changes made based on the key design features of this case shall fall within the protection scope of this case.

Claims

1. A dual-purpose rowing machine, characterized in that: Including the main frame of the seat; Seat frame; The paddling assembly includes two paddles, which are located on both sides of the main seat frame, and the bottom ends of the paddles are omnidirectionally connected to the main seat frame. A rope pulling device includes a rope, a front fixed pulley, a double movable pulley, and a double fixed pulley. The double fixed pulley is located above the front fixed pulley, and its rotation direction is perpendicular to the rotation direction of the front fixed pulley. The double movable pulley includes a left movable pulley and a right movable pulley. The double fixed pulley includes a left fixed pulley and a right fixed pulley. After the rope passes over the front fixed pulley, its two ends extend symmetrically backward, passing over the left movable pulley and the right movable pulley respectively. Then, its two ends fold forward and extend, passing over the left fixed pulley and the right fixed pulley respectively. After passing over the left fixed pulley and the right fixed pulley respectively, the two ends of the rope are each connected to the top of a paddle or simultaneously connected to the top of a paddle. A resistance device and a transmission device are provided, wherein a rear fixed pulley is provided between the double-moving pulley and the transmission device, and the rear fixed pulley is connected to the resistance device through the transmission device; The transmission device includes a main transmission belt, a secondary transmission belt, and a pulley and a flywheel arranged in parallel to each other. One end of the main transmission belt is fixedly connected to the pulley and is wound or unwound on the pulley. The other end passes around the rear fixed pulley and is fixedly connected to the double moving pulley. The drive shaft of the flywheel is connected to the pulley through the secondary transmission belt and is driven by the pulley. A tension spring is provided between the pulley and the main frame of the seat. A pressure wheel is provided between the drive shaft of the flywheel and the pulley. The pressure wheel presses against the upper part of the auxiliary drive belt, so that the auxiliary drive belt is in close contact with the drive shaft of the flywheel. Each end of the pull rope is provided with a pull ring, and each of the two pull rings is connected to a paddle or both are connected to the same paddle.

2. The dual-purpose rowing machine as described in claim 1, characterized in that: Both the transmission device and the resistance device are located below the rope pulling device.

3. The dual-purpose rowing machine as described in claim 1, characterized in that: The resistance device includes a first magnetic component disposed on the outer periphery of the flywheel and a second magnetic component disposed outside the first magnetic component. A gap is left between the first magnetic component and the second magnetic component. The first magnetic component and the second magnetic component cooperate to generate magnetic resistance to limit the rotational speed of the flywheel.

4. The dual-purpose rowing machine as described in claim 3, characterized in that: The second magnetic component is arc-shaped, with a fixed end and a free end at its two ends. The fixed end is fixed below the first magnetic component, and the free end swings towards or away from the first magnetic component.

5. A dual-purpose rowing machine as described in claim 3, characterized in that: It also includes a fine-tuning device, which includes an adjustment knob, an adjustment tube, and an adjustment plate. The adjustment plate is mounted on the second magnetic component, and the adjustment tube is movably mounted on the adjustment plate and drives the adjustment plate to move up and down. A return spring is also connected to the adjustment plate. The adjustment knob drives the second magnetic component to move closer to or away from the first magnetic component through the adjustment tube, the adjustment plate, and the return spring.

6. A dual-purpose rowing machine as described in claim 5, characterized in that: The fine-tuning device also includes a fixing plate, which is fixed above the adjusting plate. The adjusting plate has a through groove, and the fixing plate has a through hole at a position corresponding to the through groove. The adjusting tube includes an outer tube and an inner tube. The outer tube is fixed in the through hole of the fixing plate, and the lower end of the inner tube is a T-shaped end cap. The inner tube passes through the outer tube and the through groove, and the T-shaped end cap abuts against the lower end face of the adjusting plate.

7. A dual-purpose rowing machine as described in claim 1, characterized in that: A guide pulley is provided between the paddle and the pull rope. The pull rope passes around the guide pulley and is connected to the paddle. A rotating component is provided at the guide pulley. The rotation of the rotating component drives the paddle to rotate.

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