A rope take-up assembly and indoor rowing simulation trainer

Abstract

This utility model relates to the field of fitness equipment technology, and in particular to a rope winding and unwinding assembly and an indoor rowing simulator. The rope winding and unwinding assembly includes a motor; a fixed shaft fixedly connected to the stator of the motor; a housing rotatably fitted onto the fixed shaft, the housing being connected to the power output end of the motor via a one-way transmission mechanism, and the housing being used to wind the rope; and a coil spring wound around the fixed shaft, the free end of the coil spring being connected to the housing. When the rope is pulled out, the housing drives the power output end of the motor to rotate via the one-way transmission mechanism and contracts the coil spring, allowing the coil spring to accumulate elastic force. When the rope is released, the coil spring expands and releases the accumulated elastic force, causing the housing to rotate relative to the fixed shaft and wind the rope back into the housing. This indoor rowing simulator uses the above-mentioned rope winding and unwinding assembly to wind and unwind the rope. Therefore, this simulator not only has the advantages of an electric rowing machine but can also be used without power.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a rope retraction and release component and an indoor rowing simulator. Background Technology

[0002] Indoor rowing simulators (also known as rowing machines) are multifunctional fitness equipment inspired by the sport of rowing on water. They simulate the motion of rowing, helping users develop full-body muscles and endurance. Currently, there are three common types of indoor rowing machines on the market: air resistance rowing machines, magnetic resistance rowing machines, and water resistance rowing machines. Air resistance rowing machines generate air resistance by pulling the paddle, which drives the fan blades, and the resistance is adjusted by changing the angle of the fan blades. Magnetic resistance rowing machines utilize the magnetic repulsion between magnets and a turbine inside the machine to generate resistance; the closer the magnets are to the turbine, the greater the resistance. Water resistance rowing machines generate resistance by pulling the paddle, which drives the fan blades to rotate in a water tank, and the resistance is adjusted by changing the angle of the fan blades. All three types of rowing simulators have the technical problem of not being able to automatically adjust the damping, produce relatively high noise levels during use, and require frequent maintenance to ensure optimal performance.

[0003] To address the aforementioned problems, existing technologies include electric rowing machines that utilize motors to generate pulling damping. For example, patent application number CN202010721653.4 discloses a multi-functional combined fitness training equipment and training control method with intelligent control. In this training equipment, one end of the rope is connected to a handle, and the other end is directly connected to the output shaft of a one-way hub brushless motor. During exercise, the user pulls the handle, thereby pulling the rope. The output shaft of the one-way hub brushless motor provides damping for the rope. When the user releases the handle, the output shaft of the one-way hub brushless motor rotates to retract the rope.

[0004] However, in existing indoor rowing trainers that use motors to generate pulling damping, the ropes must be retracted with the help of the motor's rotation; therefore, they cannot operate without power. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a rope and cable retraction assembly, comprising:

[0006] Electric motor;

[0007] A fixed shaft is fixedly connected to the stator of the motor;

[0008] The housing is rotatably fitted onto the fixed shaft. The housing is connected to the power output end of the motor via a one-way transmission mechanism, and the housing is used to wind the rope.

[0009] A coil spring is wound around the fixed shaft, and the free end of the coil spring is connected to the housing;

[0010] When the rope is pulled out, the housing drives the power output end of the motor to rotate and retract the coil spring through the one-way transmission mechanism, so that the coil spring accumulates elastic force.

[0011] When the cord is released, the coil spring expands to release the stored elastic force, causing the housing to rotate relative to the fixed axis and rewind the cord back into the housing.

[0012] Furthermore, in order to better realize this utility model, the housing includes a main shell with an internal installation space and a cylindrical boss fixed on the outer wall of the main shell. The housing also has a through hole that penetrates the main shell and the cylindrical boss, and the rope is wrapped around the cylindrical boss.

[0013] The fixed shaft includes a round shaft connected to the stator of the motor and a connecting block fixed to the round shaft. The connecting block is coaxially arranged with the round shaft. The round shaft rotatably passes through the round through hole, and the connecting block is rotatably placed in the installation space.

[0014] The coil spring is wound around the connecting block and placed in the mounting space. The free end of the coil spring is connected to the inner wall of the mounting space. The cylindrical boss is connected to the power output end of the motor through the one-way transmission mechanism.

[0015] Furthermore, in order to better realize this utility model, a retaining ring is provided at the end of the cylindrical boss away from the main shell, and an entanglement space is formed between the retaining ring, the cylindrical boss and the main shell, and the rope is placed in the entanglement space.

[0016] Furthermore, in order to better realize this utility model, the main shell includes:

[0017] The block has a cylindrical boss fixed to one side of its outer wall, and a groove is formed on the other side of the block, which forms the installation space.

[0018] A cover plate is connected to the block, the cover plate covers the groove opening of the groove, and the through hole penetrates the cover plate and the block.

[0019] Furthermore, in order to better realize this utility model, a wear-resistant plate is installed on the side of the cover plate near the groove and on the bottom of the groove, and the two wear-resistant plates are respectively placed on both sides of the coil spring.

[0020] Furthermore, in order to better realize this utility model, a bearing mounting chamber is also provided inside the cylindrical boss, and a bearing is installed in the bearing mounting chamber, and the round shaft is inserted and fixed to the inner hole of the bearing.

[0021] Furthermore, in order to better realize this utility model, the one-way transmission mechanism is an overrunning clutch, and the cylindrical boss has a mounting cavity at one end away from the main shell. The overrunning clutch is installed in the mounting cavity, and the outer ring of the overrunning clutch is connected to the cavity wall of the mounting cavity through a first flat key.

[0022] A bushing is rotatably fitted onto the circular shaft. The bushing is inserted into the inner hole of the overrunning clutch and connected to the inner ring of the overrunning clutch via a second flat key. The bushing is connected to the power output end of the motor.

[0023] Furthermore, in order to better realize this utility model, the motor is a brushless hollow motor, the round shaft is inserted into the center hole of the motor and bolted to the stator of the motor, and the bushing is threaded to the power output end of the motor.

[0024] This utility model also provides an indoor rowing simulator, including a rope and the aforementioned rope retraction assembly. One end of the rope is connected to a handle, and the other end of the rope is connected to the housing of the rope retraction assembly.

[0025] Furthermore, in order to better realize this utility model, it also includes:

[0026] The motor of the rope take-up and release assembly is fixedly installed on the main frame body;

[0027] A reversing wheel is rotatably mounted on the main frame, the rope is wound around the reversing wheel, and a permanent magnet is mounted on the reversing wheel;

[0028] A Hall sensor is installed on the main frame. The Hall sensor is used to measure the number of rotations of the permanent magnet in order to measure the number of rotations of the commutator wheel.

[0029] The control module is electrically connected to both the Hall sensor and the motor. The control module is used to automatically control the rotational damping of the power output end of the motor based on the detection data of the Hall sensor.

[0030] The beneficial effects of this utility model are reflected in:

[0031] 1. The housing of the rope winding and unwinding assembly provided by this utility model is rotatably sleeved on a fixed shaft. The housing and the fixed shaft are respectively connected to the power output end of the motor and the stator. In this way, the housing can rotate relative to the fixed shaft. Furthermore, the housing is connected to the power output end of the motor through a one-way transmission mechanism. Therefore, the housing can only rotate in one direction relative to the fixed shaft and cannot rotate in both directions. A coil spring is also installed between the fixed shaft and the housing. The housing is used to wind the rope.

[0032] When the rope is pulled out, the housing rotates. Due to the action of the one-way transmission mechanism, the housing cannot rotate relative to the power output end of the motor. Therefore, during this process, the housing will drive the power output end of the motor to rotate. Due to the characteristics of the motor, when the motor is de-energized, its power output end will be subject to a certain damping when rotating. This damping provides resistance to the rotation of the housing, thus making the rope pull out with resistance. Moreover, when the rope is pulled out and drives the housing to rotate, since the fixed shaft does not rotate, this process will compress the coil spring, allowing the coil spring to accumulate elastic force.

[0033] When the rope is released, the contracted coil spring expands and releases the stored elastic force. Because the one-way transmission mechanism allows the housing to reverse relative to the power output end of the motor, the coil spring will drive the housing to rotate relative to the fixed axis during this process, thereby rewinding the rope back into the housing.

[0034] With the above structure, the rope winding and unwinding assembly uses the rotational damping of the motor's power output end when the power is off to provide resistance to the pulling out of the rope. Furthermore, when the rope is rewinding, the housing is rotated only by the coil spring. Therefore, the rope winding and unwinding assembly can be used without power. Moreover, because the motor's power output end generates less noise when rotating, the rope winding and unwinding assembly operates with less noise. In addition, the motor is usually highly stable, so the rope winding and unwinding assembly requires less maintenance. Furthermore, by collecting the rotational data of the motor's power output end, the rope winding and unwinding status can be monitored in real time.

[0035] 2. The indoor rowing simulator provided by this utility model includes a rope and the aforementioned rope retraction assembly. One end of the rope is connected to a handle, and the other end is connected to the housing of the rope retraction assembly. Thus, the indoor rowing simulator can be used without electricity, produces less noise during use, automatically adjusts the resistance encountered when the rope is pulled out, obtains the exerciser's motion data by real-time acquisition of the rotation data from the motor's power output end, and requires fewer maintenance cycles during use. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the rope and cable take-up and release assembly provided in Embodiment 1 of this utility model;

[0037] Figure 2 for Figure 1 An exploded view of the rope take-up and release assembly shown;

[0038] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the rope take-up and release assembly without the rope attached.

[0039] Figure 4This is a schematic diagram of the structure of the fixed shaft in an embodiment of the present utility model;

[0040] Figure 5 This is a schematic diagram of the shell structure in an embodiment of the present utility model;

[0041] Figure 6 for Figure 5 Another view of the shell shown;

[0042] Figure 7 This is a schematic diagram of the installation structure of the coil spring in the housing in an embodiment of the present utility model;

[0043] Figure 8 This is a schematic diagram of the installation structure of the one-way transmission mechanism in the housing in an embodiment of this utility model;

[0044] Figure 9 This is a schematic diagram of the bearing mounting structure in the housing according to an embodiment of the present utility model;

[0045] Figure 10 This is a schematic diagram of the installation structure of the bushing between the one-way transmission mechanism and the motor in an embodiment of the present utility model.

[0046] Figure 11 This is a schematic diagram of the structure of the indoor rowing simulator provided in Embodiment 2 of this utility model;

[0047] Figure 12 A schematic diagram of the installation structure of the rope take-up and release assembly provided in Embodiment 1 of this utility model in an indoor rowing simulator;

[0048] Figure 13 for Figure 12 A magnified view of region A in the image.

[0049] Figure label:

[0050] 100-Motor, 200-Fixed Shaft, 210-Round Shaft, 220-Connecting Block, 300-Housing, 310-Main Housing, 311-Block, 312-Cover Plate, 320-Cylindrical Boss, 330-Retaining Ring, 340-Wear Plate, 350-Bearing, 400-One-Way Transmission Mechanism, 410-First Flat Key, 420-Second Flat Key, 500-Rope, 600-Coil Spring, 700-Busset, 800-Main Frame, 810-Handle, 820-Reversing Wheel, 830-Hall Sensor, 840-Touch Display, 850-Seat Cushion, 860-Foot Pedal. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] Example 1:

[0053] Reference Figures 1-10 As shown, the rope winding and unwinding assembly provided in this embodiment includes a motor 100, a fixed shaft 200, a housing 300, and a coil spring 600, wherein:

[0054] The motor 100 has a power output end. It is easy to understand that the power output end of the motor 100 is the part connected to its rotor. The motor 100 is fixedly installed, which means that the stator of the motor 100 is fixed, and its power output end can rotate relative to the stator.

[0055] The fixed shaft 200 is fixedly connected to the stator of the motor 100. Because the stator of the motor 100 is fixed, the fixed shaft 200 is also fixed.

[0056] The housing 300 is used to wind the rope 500. The housing 300 is rotatably sleeved on the fixed shaft 200, and the rope 500 wound on it can also be understood as being wound around the fixed shaft 200. In this way, when the housing 300 rotates relative to the fixed shaft 200, the rope 500 wound on it will be released and released. Specifically, when the housing 300 rotates relative to the fixed shaft 200 in a first direction, the rope 500 is released, and when the housing 300 rotates relative to the fixed shaft 200 in a second direction, the rope 500 is wound back onto the housing 300. The housing 300 is connected to the power output end of the motor 100 via a one-way transmission mechanism 400. Because the one-way transmission mechanism 400 can only achieve unidirectional rotation and not bidirectional rotation, the housing 300 can only rotate in one direction relative to the power output end of the motor 100. Specifically, with the help of the one-way transmission mechanism 400, the housing 300 can rotate in a second direction relative to the power output end of the motor 100, but cannot rotate in the first direction. This means that when the rope 500 is released, the housing 300 cannot rotate relative to the power output end of the motor 100, and when the rope 500 is retracted, the housing 300 can rotate relative to the power output end of the motor 100. The first direction and the second direction are opposite.

[0057] A coil spring 600 is wound around a fixed shaft 200, and the free end of the coil spring 600 is connected to the housing 300. Thus, when the housing 300 rotates relative to the fixed shaft 200, the coil spring 600 will either coil up or expand. Specifically, when the housing 300 rotates relative to the fixed shaft 200 in a first direction, the rotating housing 300 causes the coil spring 600 to coil up; when the coil spring 600 expands, the housing 300 rotates relative to the fixed shaft 200 in a second direction.

[0058] When the rope 500 is pulled out, the rope 500 drives the housing 300 to rotate relative to the fixed shaft 200 in the first direction. Through the one-way transmission mechanism 400, the housing 300 rotating in the first direction will also drive the power output end of the motor 100 to rotate synchronously and at the same speed in the first direction. Thus, the rotational resistance of the power output end of the motor 100 is used to provide resistance for pulling out the rope 500. During this process, the housing 300 rotating in the first direction will contract the coil spring 600, causing the coil spring 600 to accumulate elastic force.

[0059] When the pulled-out rope 500 is released, that is, when the free end of the rope 500 is no longer under tension, the contracted coil spring 600 will expand under its own elastic force to release the stored elastic force. During the expansion of the coil spring 600, the housing 300 will rotate relative to the pivot in the second direction. Due to the action of the one-way transmission mechanism 400, when the housing 300 rotates in the second direction, the housing 300 will not drive the power output end of the motor 100 to rotate, and the housing 300 rotating in the second direction will rewind the pulled-out rope 500 back onto the housing 300. In this way, the rewinding of the rope 500 can be achieved by the coil spring 600 driving the housing 300 to rotate in the second direction, without the need for the power output end of the motor 100 to rotate. Therefore, the actual role of the motor 100 in the use of this rope winding and unwinding assembly is only to provide resistance to the pulling out of the rope 500, so the motor 100 does not need to be energized during use.

[0060] With the above structure, the rope winding and unwinding assembly provides resistance to the pulling out of the rope 500 by utilizing the rotational damping of the power output end of the motor 100 when the power is off. Furthermore, when the rope 500 is rewinding, the housing 300 is rotated solely by the coil spring 600. Therefore, the rope winding and unwinding assembly can be used without power. Moreover, because the noise emitted when the power output end of the motor 100 rotates is relatively low, the rope winding and unwinding assembly operates with even less noise. Additionally, the motor 100 typically has high stability, thus requiring fewer maintenance cycles during use. Furthermore, by collecting the rotational data of the power output end of the motor 100, the winding and unwinding status of the rope 500 can be monitored in real time.

[0061] Because current is generated inside all motors 100 when their power output terminals rotate in the event of a power outage, i.e., power generation, an optional implementation method in this embodiment is to: set up a rectifier module to collect the current generated inside the motors 100 when the rope 500 is pulled out, causing the power output terminals of the motors 100 to rotate, and utilize this current, for example, by supplying it to the electronic control unit of the motors 100, thereby dynamically adjusting the rotational damping of the power output terminals of the motors 100, so that the resistance encountered by the rope 500 when it is pulled out can be automatically adjusted. Of course, the specific adjustment method and the current collection method described above are not the core inventive points of this patent, so the adjustment method will not be described in detail here.

[0062] Optionally, the housing 300 in this embodiment includes a main housing 310 and a cylindrical boss 320, wherein:

[0063] The main housing 310 has an installation space inside. The cylindrical boss 320 is integrally formed with the main housing 310 and is located on one side of the outer wall of the main housing 310. The housing 300 is also provided with a through hole that penetrates the main housing 310 and the cylindrical boss 320. The rope 500 is wound around the cylindrical boss 320 and the cylindrical boss 320 is connected to the power output end of the motor 100 through the one-way transmission mechanism 400.

[0064] The aforementioned fixed shaft 200 includes a round shaft 210 and a connecting block 220. The connecting block 220 has a cylindrical structure and is fixed to the round shaft 210 and located at one end of the round shaft 210. The round shaft 210 is rotatably inserted into the round through hole, thereby causing the housing 300 to be rotatably sleeved on the fixed shaft 200. The connecting block 220 is rotatably placed in the installation space. The coil spring 600 is wound around the connecting block 220 and placed in the installation space. In fact, the end of the inner ring of the coil spring 600 is snapped and fixed on the connecting block 220, and the free end of the coil spring 600 (that is, the end of the outer ring of the coil spring 600) is snapped and fixed on the inner wall of the installation space, thereby installing the coil spring 600 between the fixed shaft 200 and the housing 300.

[0065] The above structure allows the coil spring 600 to be integrated into the mounting space within the housing 300, resulting in a more compact and rational overall structure. This enhances the stability of the entire rope winding and unwinding assembly. Of course, a torsion spring can also be used instead of the coil spring 600.

[0066] Optionally, a retaining ring 330 is provided at the end of the cylindrical boss 320 facing away from the main shell 310. A winding space is formed between the retaining ring 330, the cylindrical boss 320, and the main shell 310. The rope 500 is placed in the winding space, and the width of the winding space is exactly matched with the width of the rope 500. In this way, the rope 500 can be wound more neatly on the shell 300. It should be noted that the end of the retaining ring 330 facing away from the cylindrical boss 320 is close to the motor 100, but a gap is left between the end of the retaining ring 330 facing away from the cylindrical boss 320 and the motor 100, so that the end of the retaining ring 330 facing away from the cylindrical boss 320 does not contact the motor 100.

[0067] Optionally, the main shell 310 includes a block 311 and a cover plate 312, wherein:

[0068] The block 311 can be a square or a disc-shaped structure. Preferably, the block 311 is a disc-shaped structure. The cylindrical boss 320 is integrally formed on one outer wall of the block 311, and a groove is formed on the other side of the block 311, which forms the installation space.

[0069] The cover plate 312 is connected to the block 311, and the cover plate 312 covers the groove opening. The through hole passes through the cover plate 312 and the block 311. Specifically, the cover plate 312 can be connected to the block 311 by screwing, bolting, or snap-fit.

[0070] In this way, when the spring force of the coil spring 600 weakens or the coil spring 600 deforms, the cover plate 312 can be removed to easily disassemble and assemble the coil spring 600.

[0071] To allow the coil spring 600 to contract and expand more flexibly and stably within the aforementioned installation space, in this embodiment, a wear-resistant plate 340 is rotatably placed on both the side of the cover plate 312 near the groove and on the bottom of the groove. The wear-resistant plate 340 can be a flat plate made of hard plastic or ceramic. The two wear-resistant plates 340 are respectively positioned on both sides of the coil spring 600, with both sides of the coil spring 600 in contact with the two wear-resistant plates 340. Similarly, both sides of the connecting block 220 are also in contact with the two wear-resistant plates 340. Because the wear-resistant plates 340 can rotate, the coil spring 600 contracts or expands more flexibly. Furthermore, the wear-resistant plates 340 prevent the coil spring 600 from directly contacting the cover plate 312 and the bottom of the groove.

[0072] To allow the housing 300 to rotate more flexibly relative to the fixed shaft 200, in this embodiment, a bearing mounting chamber is further provided in the cylindrical boss 320. A bearing 350 is installed in this bearing mounting chamber. The round shaft 210 of the fixed shaft 200 is inserted into the inner hole of the bearing 350 and undergoes an interference fit with the inner hole wall of the bearing 350 to fix it to the inner ring of the bearing 350. Of course, the bearing mounting chamber is coaxially arranged with the through hole.

[0073] Optionally, the aforementioned one-way transmission mechanism 400 is an overrunning clutch. A mounting cavity is provided at the end of the cylindrical boss 320 facing away from the main housing 310. In fact, the aforementioned bearing mounting chamber connects the aforementioned mounting cavity and the aforementioned mounting space. The mounting cavity is a cylindrical chamber and is coaxial with the aforementioned bearing mounting chamber. The aforementioned overrunning clutch is installed in the mounting cavity. A clamping bolt is also bolted to the end face of the cylindrical boss 320 facing away from the main housing 310. The clamping bolt clamps the outer ring of the overrunning clutch, thereby installing the overrunning clutch in the aforementioned mounting cavity. The outer ring of the overrunning clutch is connected to the cavity wall of the aforementioned mounting cavity through the first flat key 410. In this way, the outer ring of the overrunning clutch is connected with the aforementioned cylindrical boss 320 and the entire housing 300 to form a linked whole.

[0074] A bushing 700 is rotatably fitted onto the aforementioned round shaft 210. The bushing 700 is inserted into the inner hole of the overrunning clutch, and the bushing 700 is connected to the inner ring of the overrunning clutch via a second flat key 420. Furthermore, the bushing 700 is connected to the power output end of the motor 100. In this way, the inner ring of the overrunning clutch, the bushing 700, and the power output end of the motor 100 are connected to form a linked whole.

[0075] In this manner, the one-way transmission mechanism 400 is installed between the housing 300 and the power output end of the motor 100. The one-way transmission mechanism 400 is configured as an overrunning clutch, which provides stable performance and makes the entire rope take-up and unwinding assembly more compact.

[0076] Of course, the aforementioned one-way transmission mechanism 400 can also be configured as a ratchet and pawl mechanism including a ratchet and a pawl. The ratchet is mounted on the aforementioned cylindrical boss 320 and is coaxial with the cylindrical boss 320. The pawl is mounted on the power output end of the motor 100. The cooperation between the pawl and the ratchet allows the cylindrical boss 320 to rotate relative to the power output end of the motor 100 in the second direction but not in the aforementioned first direction.

[0077] Optionally, structurally, the aforementioned motor 100 is a brushless hollow motor; in terms of type, the motor 100 is a servo motor or a variable frequency motor, to facilitate automatic control. The aforementioned round shaft 210 is inserted into the central hole of the motor 100, and one end of the round shaft 210 located in the central hole of the motor 100 is bolted to the stator of the motor 100, thereby fixing the fixed shaft 200 to the stator of the motor 100. The aforementioned bushing 700 is threadedly connected to the power output end of the motor 100, so that the bushing 700 is connected to the power output end of the motor 100. This makes the entire rope winding and unwinding assembly structure more compact.

[0078] Of course, the motor 100 can also be a structure with a solid rotating shaft. In this case, a connecting bracket is provided at the end of the round shaft 210 of the fixed shaft 200 away from the motor 100. The connecting bracket is bolted to the housing of the motor 100, forming a gap between the connecting bracket and the round shaft 210. The housing 300 is rotatably sleeved on the round shaft 210 and placed in the gap. The connecting block 220 is fixed to the round shaft 210. The coil spring 600 is connected between the connecting block 220 and the housing 300. The difference is that the round shaft 210 is only inserted into the inner hole of the bearing 350, but not into the inner hole of the overrunning clutch. The solid rotating shaft of the motor 100 is inserted into the inner hole of the overrunning clutch and fixed to the inner ring of the overrunning clutch by the second flat key 420. In this case, the bushing 700 is not needed.

[0079] Example 2:

[0080] like Figure 11 , Figure 12 as well as Figure 13 As shown, this embodiment provides an indoor rowing simulator, including a rope 500 and the aforementioned rope retraction and deployment assembly. One end of the rope 500 is connected to a handle 810, and the other end of the rope 500 is connected to the aforementioned rope retraction and deployment assembly. Therefore, the rope 500 of the indoor rowing simulator is retracted and deployed through the aforementioned rope retraction and deployment assembly.

[0081] Therefore, this indoor rowing simulator can be used without electricity, and it generates less noise during use. It can automatically adjust the resistance encountered when the rope 500 is pulled out, and it can obtain the exerciser's exercise data by collecting the rotation data of the power output end of the motor 100 in real time. Furthermore, it requires fewer maintenance during use. In other words, this indoor rowing simulator has most of the advantages of an electric rowing machine.

[0082] In addition, the indoor rowing simulator also includes a main frame 800, to which the motor 100 of the aforementioned rope winding and unwinding assembly is fixedly mounted. Furthermore, the main frame 800 also houses components such as a seat cushion 850 and foot pedals 860. A reversing wheel 820 is rotatably mounted on the main frame 800, around which the rope 500 is wound, thereby using the reversing wheel 820 to reverse the direction of the rope 500. The winding and unwinding of the rope 500 causes the reversing wheel 820 to rotate synchronously. A permanent magnet is mounted on the reversing wheel 820; as the reversing wheel 820 rotates, the position of the permanent magnet changes periodically. A Hall sensor 830 is also mounted on the main frame 800 to measure the number of rotations of the permanent magnet, thereby determining the number of rotations of the reversing wheel 820. Both the Hall sensor 830 and the motor 100 are electrically connected to the control module. Specifically, the electronic control unit of the motor 100 can be understood as part of the control module. Thus, the control module automatically controls the rotational damping of the power output end of the motor 100 based on the detection data from the Hall sensor 830. This control module can be a chip, etc. Furthermore, a touch screen 840 is also installed on the main frame 800. This touch screen 840 is also electrically connected to the control module. Thus, the touch screen 840 can display the status of the motor 100, the detection results of the Hall sensor 830, and the exerciser's movement data. It should be noted that obtaining exerciser data by measuring the number of rotations is already widely used in existing technologies, such as treadmills and exercise bikes, so it will not be described in detail here. The exerciser can also manually set the rotational damping of the power output end of the motor 100 on the touch screen 840.

[0083] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0084] In the description of embodiments of this utility model, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0085] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0086] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0087] In the description of the embodiments of this utility model, it should be understood that "-" and "~" represent a range of two values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0088] In the description of the embodiments of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0089] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rope and cable take-up and release assembly, characterized in that, include: Electric motor; A fixed shaft is fixedly connected to the stator of the motor; The housing is rotatably fitted onto the fixed shaft. The housing is connected to the power output end of the motor via a one-way transmission mechanism, and the housing is used to wind the rope. A coil spring is wound around the fixed shaft, and the free end of the coil spring is connected to the housing; When the rope is pulled out, the housing drives the power output end of the motor to rotate and retract the coil spring through the one-way transmission mechanism, so that the coil spring accumulates elastic force. When the cord is released, the coil spring expands to release the stored elastic force, causing the housing to rotate relative to the fixed axis and rewind the cord back into the housing.

2. The rope take-up and release assembly according to claim 1, characterized in that: The housing includes a main shell with an internal installation space and a cylindrical boss fixed to the outer wall of the main shell. The housing also has a through hole that penetrates the main shell and the cylindrical boss. The rope is wrapped around the cylindrical boss. The fixed shaft includes a round shaft connected to the stator of the motor and a connecting block fixed to the round shaft. The connecting block is coaxially arranged with the round shaft. The round shaft rotatably passes through the round through hole, and the connecting block is rotatably placed in the installation space. The coil spring is wound around the connecting block and placed in the mounting space. The free end of the coil spring is connected to the inner wall of the mounting space. The cylindrical boss is connected to the power output end of the motor through the one-way transmission mechanism.

3. The rope take-up and release assembly according to claim 2, characterized in that: The cylindrical boss is also provided with a retaining ring at the end opposite to the main shell. The retaining ring, the cylindrical boss and the main shell form an entanglement space, and the rope is placed in the entanglement space.

4. The rope take-up and release assembly according to claim 2, characterized in that, The main shell includes: The block has a cylindrical boss fixed to one side of its outer wall, and a groove is formed on the other side of the block, which forms the installation space. A cover plate is connected to the block, the cover plate covers the groove opening of the groove, and the through hole penetrates the cover plate and the block.

5. The rope take-up and release assembly according to claim 4, characterized in that: A wear-resistant plate is installed on the side of the cover plate near the groove and on the bottom of the groove, and the two wear-resistant plates are respectively placed on both sides of the coil spring.

6. The rope take-up and release assembly according to claim 2, characterized in that: The cylindrical boss also has a bearing mounting chamber, in which a bearing is installed, and the round shaft is inserted and fixed to the inner hole of the bearing.

7. The rope take-up and release assembly according to any one of claims 2-6, characterized in that: The one-way transmission mechanism is an overrunning clutch. The cylindrical boss has a mounting cavity at one end away from the main housing. The overrunning clutch is installed in the mounting cavity, and the outer ring of the overrunning clutch is connected to the cavity wall of the mounting cavity through a first flat key. A bushing is rotatably fitted onto the circular shaft. The bushing is inserted into the inner hole of the overrunning clutch and connected to the inner ring of the overrunning clutch via a second flat key. The bushing is connected to the power output end of the motor.

8. The rope take-up and release assembly according to claim 7, characterized in that: The motor is a brushless hollow motor. The round shaft is inserted into the center hole of the motor and bolted to the stator of the motor. The bushing is threaded to the power output end of the motor.

9. An indoor rowing simulator, characterized in that: It includes a cord and a cord retraction assembly as described in any one of claims 1-8, wherein one end of the cord is connected to a handle and the other end of the cord is connected to the housing of the cord retraction assembly.

10. An indoor rowing simulator according to claim 9, characterized in that, Also includes: The motor of the rope take-up and release assembly is fixedly installed on the main frame body; A reversing wheel is rotatably mounted on the main frame, the rope is wound around the reversing wheel, and a permanent magnet is mounted on the reversing wheel; A Hall sensor is installed on the main frame. The Hall sensor is used to measure the number of rotations of the permanent magnet in order to measure the number of rotations of the commutator wheel. The control module is electrically connected to both the Hall sensor and the motor. The control module is used to automatically control the rotational damping of the power output end of the motor based on the detection data of the Hall sensor.

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