Resistance providing device for rowing machine and rowing machine

Abstract

The present disclosure relates to a resistance providing device for a rowing machine and a rowing machine, the resistance providing device for the rowing machine comprising an energy conversion module, an energy storage module and a control module, wherein the energy conversion module is configured to be driven under the action of an external force to convert mechanical energy into electrical energy and provide resistance to the external force; the energy storage module is configured to store the electrical energy generated by the energy conversion module; the control module is configured to be driven by at least one of the energy conversion module or the energy storage module, and control the resistance provided by the energy conversion module to remain constant. In this way, when the resistance providing device for the rowing machine of the present disclosure is applied to the rowing machine, the placement of the rowing machine can be unrestricted, more flexible, and the value of the energy consumed by the user during the movement obtained by the rowing machine can be more accurate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of sports machines, and more particularly, to a resistance providing device for a rowing machine, and to a rowing machine. BACKGROUND

[0002] A rowing machine is a fitness device that simulates rowing movement. The most important core component of the rowing machine is a damping structure that generates resistance. The most common structures are wind resistance structure, water resistance structure and magnetic resistance structure. Although the above structures can achieve the effect of sports fitness by generating resistance, they all have many defects.

[0003] Specifically, the resistance generated by the wind resistance structure and the water resistance structure has a non-linear relationship with the rotation speed, and cannot achieve constant torque operation. The magnetic resistance structure is not only complex in composition, but also must be connected to a power source to provide resistance, thereby limiting the movement space of the rowing machine. Therefore, the wind resistance, water resistance and magnetic resistance structures cannot well meet the needs of users. SUMMARY

[0004] The present disclosure provides a resistance providing device for a rowing machine and a rowing machine to solve the problems in the prior art.

[0005] According to a first aspect of the present disclosure, a resistance providing device for a rowing machine is provided, comprising:

[0006] An energy conversion module configured to be driven by an external force to convert mechanical energy into electrical energy and provide resistance to the external force;

[0007] An energy storage module configured to store the electrical energy generated by the energy conversion module;

[0008] A control module configured to be driven by at least one of the energy conversion module or the energy storage module, and to control the resistance provided by the energy conversion module to remain constant.

[0009] In one embodiment of the present disclosure, the energy conversion module is a direct current generator, and the energy storage module is a battery;

[0010] The control module includes a control unit configured to be powered by at least one of the direct current generator or the battery, and to control the constant current output by the direct current generator.

[0011] In one embodiment of the present disclosure, the control module further includes an input unit;

[0012] The input unit is configured to send a control signal to the control unit, the control signal including a signal indicating a set current;

[0013] The control unit is configured to control the direct current generator to output the set current based on the control signal.

[0014] In one embodiment of the present disclosure, a braking resistor is further included, and the braking resistor and the battery are configured to switch between a state of being connected with the direct current generator and a state of being disconnected with the direct current generator.

[0015] The control unit is configured to control at least one of the battery and the braking resistor to be connected with the direct current generator to control the current output by the direct current generator to decrease to the set current in a case where it is detected that the real-time current output by the direct current generator is greater than the set current.

[0016] In one embodiment of the present disclosure, the control unit is configured to control the braking resistor to be connected with the direct current generator to control the current output by the direct current generator to decrease to the set current in a case where it is detected that the battery is fully charged and the real-time current is greater than the set current.

[0017] In one embodiment of the present disclosure, the input unit is configured to be powered by the battery.

[0018] The control unit is configured to be powered by the direct current generator.

[0019] In one embodiment of the present disclosure, further comprising:

[0020] A rack, the direct current generator, the battery and the control module are all arranged on the rack.

[0021] A first transmission mechanism, the first transmission mechanism is configured to drive the rotating shaft of the direct current generator to rotate in a case where the first transmission mechanism is subjected to an external pulling force.

[0022] In one embodiment of the present disclosure, the first transmission mechanism includes a coil spring, the coil spring is configured to be elongated under the action of an external pulling force or to be retracted under the action of its own elastic force.

[0023] The first transmission mechanism is configured to drive the rotating shaft of the direct current generator to rotate in a case where the coil spring is elongated under the action of an external pulling force.

[0024] In one embodiment of the present disclosure, the first transmission mechanism further includes:

[0025] A coil spring mounting wheel, the coil spring mounting wheel is rotatably arranged on the rack, the coil spring is wound around the coil spring mounting wheel and is configured to drive the coil spring mounting wheel to rotate.

[0026] The coil spring pulley is in transmission with the rotating shaft of the direct current generator, a one-way bearing is arranged between the coil spring pulley and the coil spring mounting wheel, and the coil spring mounting wheel is configured to drive the coil spring pulley to rotate when the coil spring is elongated through the one-way bearing.

[0027] In one embodiment of the present disclosure, further comprising:

[0028] A second transmission mechanism, the first transmission mechanism is configured to drive the rotating shaft of the direct current generator to rotate through the second transmission mechanism, and the transmission ratio of the second transmission mechanism is less than 1.

[0029] In one embodiment of the present disclosure, the second transmission mechanism comprises:

[0030] A first pulley rotatably arranged on the rack;

[0031] A second pulley rotatably arranged on the rack and fixedly connected with the first pulley;

[0032] A first belt, one end of the first belt is sleeved on the coil spring pulley, and the other end is sleeved on the first pulley;

[0033] A second belt, one end of the second belt is sleeved on the second pulley, and the other end is sleeved on the rotating shaft of the direct current generator;

[0034] Wherein, the diameter of the coil spring pulley is greater than the diameter of the first pulley, and the diameter of the second pulley is greater than the diameter of the rotating shaft of the direct current generator.

[0035] In one embodiment of the present disclosure, further comprising:

[0036] A pressing mechanism arranged on the rack, comprising:

[0037] A rotating member rotatably arranged on the rack;

[0038] A pressing wheel rotatably arranged on the rotating member;

[0039] A pressing spring, one end of the pressing spring is fixedly arranged on the rack, and the other end is fixedly arranged on the rotating member, and the pressing spring is configured to make the pressing wheel adhere to the first belt or the second belt.

[0040] In one embodiment of the present disclosure, the pressing spring and the pressing wheel are arranged on both sides of the rotating axis of the rotating member.

[0041] According to a second aspect of the present disclosure, a rowing machine is provided, comprising:

[0042] a machine body;

[0043] a resistance providing device for the rowing machine, the resistance providing device for the rowing machine being arranged on the machine body, the energy conversion module being configured to be driven under the pulling force of a user.

[0044] When the resistance providing device for the rowing machine of the present disclosure is applied to the rowing machine, since the control module is driven by at least one of the energy conversion module or the energy storage module, external power supply is not required, so that the placement of the rowing machine can be unrestricted and more flexible; and since the control module can control the resistance provided by the energy conversion module to remain constant, the user can be subjected to uniform resistance when using the rowing machine, so that the value of the energy consumed by the user in the movement process obtained by the rowing machine is more accurate.

[0045] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0047] Figure 1 is a logic schematic diagram of the resistance providing device for the rowing machine provided by the embodiment of the present disclosure;

[0048] Figure 2 is still another logic schematic diagram of the resistance providing device for the rowing machine provided by the embodiment of the present disclosure;

[0049] Figure 3 is a perspective schematic diagram of the resistance providing device for the rowing machine provided by the embodiment of the present disclosure;

[0050] Figure 4 is still another perspective schematic diagram of the resistance providing device for the rowing machine provided by the embodiment of the present disclosure;

[0051] Figure 5 is a perspective schematic diagram of the first transmission mechanism and the second transmission mechanism provided by the embodiment of the present disclosure;

[0052] Figure 6 is a perspective schematic diagram of the first transmission mechanism, the second transmission mechanism and the direct current generator provided by the embodiment of the present disclosure;

[0053] Figure 7 is a partial structure perspective schematic diagram of the first transmission mechanism provided by the embodiment of the present disclosure;

[0054] Figure 8 is a partial structure schematic view of a second transmission mechanism provided by the embodiment of the present disclosure;

[0055] Figure 9 is an exploded schematic view of the second transmission mechanism.

[0056] Figures 1 to 9 The correspondence between the names of various components and the reference numerals is as follows:

[0057] 1-energy conversion module; 11-dc generator; 111-rotating shaft; 12-supporting seat; 2-energy storage module; 21-battery; 3-control module; 31-control unit; 32-input unit; 4-brake resistor; 5-bus capacitor; 6-rack; 61-first fixed plate; 62-second fixed plate; 63-third fixed plate; 7-first transmission mechanism; 71-spring reel; 72-pull rope; 73-spring reel mounting wheel; 74-spring reel pulley; 75-one-way bearing; 8-second transmission mechanism; 81-first pulley; 82-second pulley; 83-first belt; 84-second belt; 85-bearing; 9-pressing mechanism; 91-rotating member; 92-pressing wheel; 93-pressing spring. DETAILED DESCRIPTION

[0058] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless otherwise specifically stated.

[0059] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the disclosure and its applications or uses.

[0060] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the description if appropriate.

[0061] Note that similar reference numerals and letters indicate similar items throughout the drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0062] The specific embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0063] In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships among the relevant parts, and do not limit the absolute positions of the relevant parts.

[0064] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0065] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0066] This disclosure provides a resistance-providing device for a rowing machine, comprising an energy conversion module, an energy storage module, and a control module. The energy conversion module is configured to be driven by an external force to convert mechanical energy into electrical energy and provide resistance to the external force. The energy storage module is configured to store the electrical energy generated by the energy conversion module. The control module is configured to be driven by at least one of the energy conversion module or the energy storage module and to control the resistance provided by the energy conversion module to remain constant.

[0067] Thus, when the resistance providing device for a rowing machine disclosed herein is applied to a rowing machine, since the control module is driven by at least one of the energy conversion module or the energy storage module, no external power supply is required, allowing the rowing machine to be placed without restriction and more freely; and since the control module can control the resistance provided by the energy conversion module to remain constant, the user can experience uniform resistance when using the rowing machine, thereby making the energy consumption data obtained by the rowing machine during the user's exercise more accurate.

[0068] For ease of understanding, please refer to the following: Figures 1 to 9 The present disclosure describes in detail, with reference to an embodiment, the specific structure of the resistance providing device for a rowing machine and the working principle of the rowing machine.

[0069] like Figure 1 As shown, this disclosure provides a resistance-providing device for a rowing machine, including an energy conversion module 1, an energy storage module 2, and a control module 3. Specifically, the energy conversion module 1 is configured to be driven by an external force to convert mechanical energy into electrical energy and provide resistance to the external force. Specifically, in one embodiment of this disclosure, the energy conversion module 1 may be... Figure 2 The DC generator 11 or other components capable of energy conversion are used. The energy storage module 2 can be... Figure 2 The battery 21, supercapacitor, and other components capable of storing the electrical energy generated by the energy conversion module 1 are included. The control module 3 is configured to be driven by at least one of the energy conversion module 1 or the energy storage module 2, and to control the resistance provided by the energy conversion module 1 to remain constant.

[0070] In this way, in the working process of the resistance providing device for the rowing machine, the control module 3 is driven by at least one of the energy conversion module 1 or the energy storage module 2, without external power supply, so that the rowing machine can be placed more freely without being limited; and since the control module 3 can control the resistance provided by the energy conversion module 1 to remain constant, the user can receive uniform resistance when using the rowing machine, so that the rowing machine can obtain more accurate energy consumption values of the user in the movement process.

[0071] As shown in Figure 2 In one embodiment of the present disclosure, the energy conversion module 1 is a direct current generator 11, the energy storage module 2 is a battery 21, and the control module 3 includes a control unit 31 configured to be powered by at least one of the direct current generator 11 or the battery 21 and control the constant current output by the direct current generator 11.

[0072] Since the torque of the direct current generator 11 is the product of the torque constant of the direct current generator 11 and the current value under the condition of constant current, the direct current generator 11 can maintain constant torque by controlling the constant current in the control circuit, and since the force arm of the rotating shaft 111 does not change, the resistance provided by the direct current generator 11 is also constant when the direct current generator 11 maintains constant torque. By controlling the constant current output by the direct current generator 11 to control the constant resistance provided by the direct current generator 11, the control method of the resistance can be more simple.

[0073] As shown in Figure 2 In one embodiment of the present disclosure, the control module 3 further includes an input unit 32, wherein the input unit 32 is configured to send a control signal to the control unit 31, the control signal including a signal indicating a set current, and the control unit 31 is configured to control the direct current generator 11 to output the set current based on the control signal.

[0074] Specifically, the input unit 32 can be connected to the operation panel of the rowing machine, and the user can adjust the resistance options on the panel, and then the input unit 32 can output the corresponding control signal through the resistance options selected by the user, wherein the control signal includes a signal indicating the set current corresponding to the resistance options; when the user selects different resistance options, the corresponding set current will also change.

[0075] The control unit 31 can control the direct current generator 11 to output the set current based on the control signal. Specifically, the control unit 31 can acquire the actual current output by the direct current generator 11; when the direct current generator 11 is not connected to the load or the load has a very low resistance, the actual current output by the direct current generator 11 is usually much greater than the set current. At this time, the control unit 31 can control the direct current generator 11 to be connected to the load, so that the actual current output by the direct current generator 11 decreases until the set current is reached; then when the set current is lower than the set current, the load connected to the direct current generator 11 is reduced, so that the control unit 31 dynamically controls the direct current generator 11 to output the set current.

[0076] Therefore, after the input unit outputs the signal indicating the set current corresponding to the resistance option selected by the user, the control unit can control the direct current generator 11 to output the set current corresponding to the resistance option based on the control signal, and further control the direct current generator 11 to provide the resistance corresponding to the resistance option, so as to meet the user's demand for adjusting different resistances.

[0077] In one embodiment of the present disclosure, the input unit 32 and the control unit 31 can be different components of the same control element, and in another embodiment of the present disclosure, the input unit 32 and the control unit 31 can be independent control elements. Figure 3 and Figure 4 The identification of the control module 3 in the above embodiment is only illustrative, and does not represent all cases.

[0078] In one embodiment of the present disclosure, the resistance providing device for the rowing machine of the present disclosure further comprises a braking resistor 4, and the braking resistor 4 and the battery 21 are configured to be switched between being connected to the direct current generator 11 or being disconnected from the direct current generator 11; the control unit 31 is configured to control at least one of the battery 21 and the braking resistor 4 to be connected to the direct current generator 11 when it is detected that the real-time current output by the direct current generator 11 is greater than the set current, so as to control the current output by the direct current generator 11 to decrease to the set current.

[0079] As described above, when the direct current generator 11 is not connected to the load or the load has a very low resistance, the actual current output by the direct current generator 11 is usually much greater than the set current. At this time, the control unit 31 can control the direct current generator 11 to be connected to at least one of the battery 21 and the braking resistor 4, so that the actual current output by the direct current generator 11 decreases until the set current is reached; then when the set current is lower than the set current, the number or frequency of the battery 21 or the braking resistor 4 connected to the direct current generator 11 is reduced, so that the control unit 31 dynamically controls the direct current generator 11 to output the set current by controlling the braking resistor 4 and the battery 21.

[0080] In one embodiment of the present disclosure, the control unit 31 is configured to control the brake resistor 4 to be connected to the DC generator 11 to control the current outputted by the DC generator 11 to be reduced to the set current, in the case that the battery 21 is full and the real-time current is greater than the set current. Specifically, when the battery 21 is not full, the battery 21 can be connected to the DC generator 11 in priority; and after the battery 21 is full, the brake resistor 4 is used to reduce the current outputted by the DC generator 11, so as to control the current outputted by the DC generator 11 to be constant to the set current. In this way, the overcharging of the battery 21 can be prevented, so as to prolong the service life of the battery 21.

[0081] Since the input unit 32 needs to monitor the operation of the user on the operation panel in real time, and the control unit 31 only needs to provide resistance when the DC generator 11 generates electricity, in one embodiment of the present disclosure, the input unit 32 is configured to be powered by the battery 21, and the control unit 31 is configured to be powered by the DC generator 11.

[0082] In this way, during the use of the resistance providing device for rowing machine in the present disclosure, the input unit 32 can be ensured to be in an always-on state, so as to monitor the operation of the user on the operation panel in real time; and the control unit 31 is driven under the action of the DC generator 11, and does not need to be in an always-on state, so as to save part of energy.

[0083] As shown in Figure 3 and Figure 4 In one embodiment of the present disclosure, the DC generator 11 can also be connected to the bus capacitor 5. The bus capacitor 5 is used to temporarily store the electrical energy of the DC generator 11, and can also limit the rapid change of the current caused by the rapid change of the voltage outputted by the DC generator 11, so as to reduce the difficulty of controlling the set current outputted by the DC generator 11.

[0084] As shown in Figure 3 and Figure 4 In one embodiment of the present disclosure, the resistance providing device for rowing machine in the present disclosure further comprises a rack 6 and a first transmission mechanism 7. The DC generator 11, the battery 21 and the control module 3 are all arranged on the rack 6. The first transmission mechanism 7 is configured to drive the rotating shaft 111 of the DC generator 11 to rotate under the action of an external pulling force. Specifically, as shown in Figures 4 to 6 The first transmission mechanism 7 can be fixed on a first fixed plate 61 of the rack 6. The DC generator 11 can be fixed on a second fixed plate 62 of the rack 6 through a support seat 12. The control module 3 can be fixed on a third fixed plate 63 of the rack 6. When the resistance providing device for rowing machine in the present disclosure further comprises the bus capacitor 5, the bus capacitor 5 can also be fixed on the third fixed plate 63 of the rack 6.

[0085] By setting the first transmission mechanism 7, the external pulling force can be effectively converted into the torque for driving the direct current generator 11 to rotate, so that the resistance providing device for rowing machine of the present disclosure can conveniently realize energy conversion when applied to the rowing machine.

[0086] As shown in Figure 5 and Figure 6 In one embodiment of the present disclosure, the first transmission mechanism 7 includes a coil spring 71 configured to be elongated under the action of an external pulling force or to be retracted under the action of its own elastic force; and the first transmission mechanism 7 is configured to drive the rotating shaft 111 of the direct current generator 11 to rotate when the coil spring 71 is elongated under the action of an external pulling force. Specifically, in order to facilitate the user to pull the coil spring 71, a pull rope 72 can also be provided at the end of the coil spring 71, so that the user can indirectly pull the coil spring 71 by pulling the pull rope 72.

[0087] That is, when the user pulls the coil spring 71, the resistance providing device for rowing machine of the present disclosure can drive the rotating shaft 111 of the direct current generator 11 to rotate and generate electricity; after the coil spring 71 is no longer elongated and retracted, the direct current generator 11 will quickly stop rotating under the action of the magnetic resistance provided by the winding, and the coil spring 71 will not drive the rotating shaft 111 of the direct current generator 11 to rotate in the opposite direction when it is retracted, so that the coil spring 71 will not be subjected to resistance when it is retracted, ensuring that the coil spring 71 can be fully retracted and avoiding changes in the user's pulling stroke each time.

[0088] As shown in Figures 5 to 7 In one embodiment of the present disclosure, the first transmission mechanism 7 further includes a coil spring mounting wheel 73 and a coil spring belt pulley 74. The coil spring mounting wheel 73 is rotatably arranged on the frame 6, the coil spring 71 is wound around the coil spring mounting wheel 73 and is configured to drive the coil spring mounting wheel 73 to rotate; the coil spring belt pulley 74 is in transmission with the rotating shaft 111 of the direct current generator 11, a one-way bearing 75 is arranged between the coil spring belt pulley 74 and the coil spring mounting wheel 73, and the coil spring mounting wheel 73 is configured to drive the coil spring belt pulley 74 to rotate through the one-way bearing 75 when the coil spring 71 is elongated.

[0089] In this way, by setting the one-way bearing 75, when the user pulls the coil spring 71, the coil spring mounting wheel 73 can drive the coil spring belt pulley 74 to rotate in the forward direction, and in turn drive the rotating shaft 111 of the direct current generator 11 to rotate; during the retraction of the coil spring 71, the coil spring mounting wheel 73 will not drive the coil spring belt pulley 74 to rotate in the opposite direction, and thus will not drive the rotating shaft 111 of the direct current generator 11 to rotate in the opposite direction.

[0090] As shown in Figure 3As shown in the embodiment of the present disclosure, the resistance providing device for rowing machine of the present disclosure further comprises a second transmission mechanism 8. The first transmission mechanism 7 is configured to drive the rotation of the rotating shaft 111 of the DC generator 11 through the second transmission mechanism 8, and the transmission ratio of the second transmission mechanism 8 is less than 1.

[0091] By setting the second transmission mechanism 8, not only the transmission function can be achieved, but also the force arm can be amplified, so that the rotation speed of the rotating shaft 111 of the DC generator 11 can be multiplied relative to the rotation speed of the spring winding wheel 73, thereby improving the power generation of the DC generator 11.

[0092] As shown in the embodiment of the present disclosure, the resistance providing device for rowing machine of the present disclosure further comprises a second transmission mechanism 8. The first transmission mechanism 7 is configured to drive the rotation of the rotating shaft 111 of the DC generator 11 through the second transmission mechanism 8, and the transmission ratio of the second transmission mechanism 8 is less than 1. Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown in the embodiment of the present disclosure, the second transmission mechanism 8 comprises a first pulley 81, a second pulley 82, a first belt 83 and a second belt 84. The first pulley 81 and the second pulley 82 are rotatably arranged on the frame 6 and fixedly connected between them. Specifically, they can be fixed on the same shaft, and a bearing 85 is arranged on the shaft to enable them to rotate on the frame 6.

[0093] One end of the first belt 83 is sleeved on the spring winding pulley 74, and the other end is sleeved on the first pulley 81; one end of the second belt 84 is sleeved on the second pulley 82, and the other end is sleeved on the rotating shaft 111 of the DC generator 11; wherein the diameter of the spring winding pulley 74 is greater than the diameter of the first pulley 81, and the diameter of the second pulley 82 is greater than the diameter of the rotating shaft 111 of the DC generator 11. In this way, the transmission ratio between the spring winding pulley 74 and the first pulley 81 is greater than 1, and the transmission ratio between the second pulley 82 and the rotating shaft 111 of the DC generator 11 is also greater than 1, so that the force arm can be amplified step by step, thereby improving the amplification effect of the second transmission mechanism 8.

[0094] As shown in the embodiment of the present disclosure, the resistance providing device for rowing machine of the present disclosure further comprises a second transmission mechanism 8. The first transmission mechanism 7 is configured to drive the rotation of the rotating shaft 111 of the DC generator 11 through the second transmission mechanism 8, and the transmission ratio of the second transmission mechanism 8 is less than 1. Figure 5 As shown in the embodiment of the present disclosure, the resistance providing device for rowing machine of the present disclosure further comprises a second transmission mechanism 8. The first transmission mechanism 7 is configured to drive the rotation of the rotating shaft 111 of the DC generator 11 through the second transmission mechanism 8, and the transmission ratio of the second transmission mechanism 8 is less than 1. Figure 5In another embodiment of this disclosure, the pressure roller 92 is in contact with the first belt 83. Alternatively, the pressure roller 92 may be in contact with the second belt 84, or two pressure mechanisms 9 may be provided, such that the pressure rollers 92 of the two pressure mechanisms 9 are in contact with the first belt 83 and the second belt 84 respectively.

[0095] By setting the clamping mechanism 9, good contact can be maintained between the conveyor belt and the pulley, preventing the first belt 83 or the second belt 84 from slipping. Moreover, since the clamping wheel 92 can rotate, the clamping wheel 92 will not affect the normal rotation of the first belt 83 or the second belt 84.

[0096] like Figure 5 As shown, in one embodiment of this disclosure, the compression spring 93 and the compression wheel 92 are respectively disposed on both sides of the rotation axis of the rotating member 91. In this way, the compression spring 93 can be made less likely to affect the arrangement of the first belt 83 or the second belt 84, reducing the difficulty of arranging the compression spring 93.

[0097] According to a second aspect of this disclosure, a rowing machine is also provided, including a body and a resistance providing device for the rowing machine, the resistance providing device for the rowing machine being disposed on the body, and an energy conversion module 1 being configured to be driven under the pull of a user.

[0098] Since the control module 3 of the resistance supply device for the rowing machine is driven by at least one of the energy conversion module 1 or the energy storage module 2, no external power supply is required, which allows the rowing machine to be placed without restrictions and more freely; and since the control module 3 can control the resistance provided by the energy conversion module 1 to remain constant, the user can experience uniform resistance when using the rowing machine, which makes the energy consumption value obtained by the rowing machine during the user's exercise more accurate.

[0099] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A resistance-providing device for a rowing machine, characterized in that, include: An energy conversion module (1) is configured to be driven by an external force to convert mechanical energy into electrical energy and to provide resistance to the external force; the energy conversion module (1) is a DC generator (11). Energy storage module (2), which is configured to store electrical energy generated by the energy conversion module (1); the energy storage module (2) is a battery (21); A control module (3) is configured to be driven by at least one of the energy conversion module (1) or the energy storage module (2) and to control the resistance provided by the energy conversion module (1) to remain constant; the control module (3) includes a control unit (31) configured to be powered by at least one of the DC generator (11) or the battery (21) and to control the current output by the DC generator (11) to remain constant; the control module (3) also includes an input unit (32); the input unit (32) is configured to send a control signal to the control unit (31), the control signal including a signal indicating a set current; the control unit (31) is configured to control the DC generator (11) to output the set current based on the control signal; The braking resistor (4) and the battery (21) are configured to switch between being connected or disconnected from the DC generator (11); The control unit (31) is configured to control at least one of the battery (21) and the braking resistor (4) to be connected to the DC generator (11) when the real-time current output by the DC generator (11) is detected to be greater than the set current, so as to control the current output by the DC generator (11) to be reduced to the set current. The control unit (31) is configured to control the braking resistor (4) to connect to the DC generator (11) when it is detected that the battery (21) is fully charged and the real-time current is greater than the set current, so as to control the current output by the DC generator (11) to be reduced to the set current.

2. The resistance-providing device for a rowing machine according to claim 1, characterized in that, The input unit (32) is configured to be powered by the battery (21); The control unit (31) is configured to be powered by the DC generator (11).

3. The resistance-providing device for a rowing machine according to claim 1, characterized in that, Also includes: The frame (6) is on which the DC generator (11), battery (21) and control module (3) are all mounted; The first transmission mechanism (7) is configured to drive the shaft (111) of the DC generator (11) to rotate when subjected to an external pulling force.

4. The resistance-providing device for a rowing machine according to claim 3, characterized in that, The first transmission mechanism (7) includes a coil spring (71) configured to extend under an applied tension or retract under its own elastic force; The first transmission mechanism (7) is configured to drive the shaft (111) of the DC generator (11) to rotate when the coil spring (71) is stretched under the action of an external tension.

5. The resistance-providing device for a rowing machine according to claim 4, characterized in that, The first transmission mechanism (7) further includes: A coil spring mounting wheel (73) is rotatably mounted on the frame (6), and a coil spring (71) surrounds the coil spring mounting wheel (73) and is configured to drive the coil spring mounting wheel (73) to rotate. A coiled spring pulley (74) is provided, which drives the rotation shaft (111) of the DC generator (11) to drive each other. A one-way bearing (75) is provided between the coiled spring pulley (74) and the coiled spring mounting wheel (73). The coiled spring mounting wheel (73) is configured to drive the coiled spring pulley (74) to rotate when the coiled spring (71) is extended via the one-way bearing (75).

6. The resistance-providing device for a rowing machine according to claim 5, characterized in that, Also includes: The second transmission mechanism (8) is configured to drive the rotating shaft (111) of the DC generator (11) to rotate via the second transmission mechanism (8), and the transmission ratio of the second transmission mechanism (8) is less than 1.

7. The resistance-providing device for a rowing machine according to claim 6, characterized in that, The second transmission mechanism (8) includes: The first pulley (81) is rotatably mounted on the frame (6); The second pulley (82) is rotatably mounted on the frame (6) and is fixedly connected to the first pulley (81); A first belt (83) is fitted at one end to the coil spring pulley (74) and at the other end to the first pulley (81). The second belt (84) has one end fitted onto the second pulley (82) and the other end fitted onto the shaft (111) of the DC generator (11). The diameter of the coil spring pulley (74) is greater than that of the first pulley (81), and the diameter of the second pulley (82) is greater than that of the shaft (111) of the DC generator (11).

8. The resistance-providing device for a rowing machine according to claim 7, characterized in that, Also includes: A clamping mechanism (9), which is mounted on the frame (6), includes: Rotating component (91), the rotating component (91) is rotatably mounted on the frame (6); A clamping wheel (92) is rotatably mounted on the rotating member (91); A compression spring (93) is provided, with one end fixedly mounted on the frame (6) and the other end fixedly mounted on the rotating member (91). The compression spring (93) is configured to make the compression wheel (92) fit against the first belt (83) or the second belt (84).

9. The resistance-providing device for a rowing machine according to claim 8, characterized in that, The compression spring (93) and the compression wheel (92) are respectively located on both sides of the rotation axis of the rotating component (91).

10. A rowing machine, characterized in that, include: Organism; The resistance providing device for a rowing machine according to any one of claims 1 to 9, wherein the resistance providing device for the rowing machine is disposed on the body, and the energy conversion module (1) is configured to be driven by the pull force of the user.

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