Fitness chair resistance gear adjustment system and method based on a non-linear spring motor

Abstract

The present invention provides a resistance gear adjustment system and method for a fitness chair based on a non-linear spring motor, relating to the technical field of fitness equipment, including: a non-linear spring motor, which is arranged inside the fitness chair and connected to the other end of the reed through a pull rope; a gear controller, which is arranged inside the fitness chair and connected to the non-linear spring motor. The gear controller includes controlling the non-linear spring motor to tighten the pull rope according to the real-time spring tension value of the non-linear spring motor and when the real-time spring tension value is less than the spring tension value of the target gear position, so as to reduce the gap between the pole piece and the magnetic force assembly, and controlling the non-linear spring motor to first relax and then tighten the pull rope when the real-time spring tension value is greater than the spring tension value of the target gear position, so as to increase the gap between the pole piece and the magnetic force assembly until the real-time spring tension value is equal to the target spring tension value. The beneficial effects are that the gear adjustment operation is completed simply through the gear controller; the inaccuracy of gear adjustment caused by the inertia of the spring motor is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and particularly to a resistance gear adjustment system and method for a fitness chair based on a non-linear spring motor. Background Art

[0002] A fitness chair is an aerobic fitness equipment that simulates outdoor sports and is also known as a cardio training equipment; it promotes cardiovascular movement through long-term and appropriate-intensity exercise of the body, speeds up metabolism, enhances heart and lung functions, and thus improves the physical fitness of the human body. There are magnets or brake pads on the periphery (or inner periphery) of the metal flywheel that generates resistance in the existing fitness chair, and the distance between the magnet or brake pad and the metal flywheel is adjusted manually to adjust the resistance size to meet the requirements of different exercise intensities. When a user exercises on the fitness chair and adjusts the resistance plus or minus gears to increase or decrease the resistance, the speed, distance, and calories consumed also increase or decrease correspondingly when the user's exercise frequency remains unchanged. However, the resistance gear adjustment of existing fitness equipment is almost all adjusted through manual adjustment or expensive resistance regulators, and the resistance adjustment process is cumbersome and inaccurate. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides a resistance gear adjustment system for a fitness chair based on a non-linear spring motor. A magnetic component and a reed are provided inside the fitness chair. One end of the reed is fixed beside the magnetic component, and a pole piece is provided on the side of the reed close to the magnetic component. Then the resistance gear adjustment system of the fitness chair includes:

[0004] A non-linear spring motor, which is arranged inside the fitness chair and is connected to the other end of the reed through a pull rope;

[0005] A gear controller, which is arranged inside the fitness chair and is connected to the non-linear spring motor. The gear controller includes:

[0006] A storage module, which is used to save a comparison table between a plurality of pre-configured standard gears and corresponding standard spring tension values;

[0007] A tension value matching module, which is connected to the storage module and is used to, when receiving an external resistance gear adjustment instruction including a target gear, match a corresponding standard spring tension value as a target spring tension value according to the target gear in the comparison table;

[0008] A real-time acquisition module, which is used to acquire the real-time spring tension value of the non-linear spring motor;

[0009] The gear adjustment module is respectively connected to the tensile force value matching module and the real-time acquisition module, and is used to control the non-linear spring motor to tighten the pulling rope when the real-time spring tensile force value is less than the target spring tensile force value, so as to reduce the gap between the magnetic pole piece and the magnetic force assembly, and when the real-time spring tensile force value is greater than the target spring tensile force value, control the non-linear spring motor to first relax and then tighten the pulling rope, so as to increase the gap between the magnetic pole piece and the magnetic force assembly until the real-time spring tensile force value is equal to the target spring tensile force value.

[0010] Preferably, it further includes a gear adjustment terminal, which is connected to the gear controller and is used for the user to send the resistance gear adjustment instruction to the gear controller, so that the gear controller adjusts the resistance gear according to the gear adjustment instruction.

[0011] Preferably, the gear adjustment module includes:

[0012] A judgment unit, which is used to generate a gear-up signal when it judges that the target spring tensile force value is greater than the real-time spring tensile force value, and generate a gear-down signal when it judges that the target spring tensile force value is less than the real-time spring tensile force value;

[0013] A gear-up unit, which is connected to the judgment unit and is used to control the non-linear spring motor to tighten the pulling rope according to the gear-up signal until the target spring tensile force value is equal to the real-time spring tensile force value;

[0014] A gear-down unit, which is connected to the judgment unit and is used to control the non-linear spring motor to relax according to the gear-down signal, and tighten the pulling rope when it detects that the target spring tensile force value is less than the real-time spring tensile force value during the relaxation process until the target spring tensile force value is equal to the real-time spring tensile force value.

[0015] Preferably, it further includes a drive circuit. The gear controller drives the non-linear spring motor to rotate through the drive circuit. The drive circuit includes:

[0016] A first resistor, one end of the first resistor is connected to the forward rotation signal end of the gear controller, the other end of the first resistor is connected to the second pin of the motor drive chip, one end of the second resistor is connected to the reverse rotation signal end of the gear controller, and the other end of the second resistor is connected to the third pin of the motor drive chip;

[0017] A first capacitor, one end of the first capacitor is connected to the working power supply, one end of the second capacitor and the fourth pin of the motor drive chip, and the other end of the first capacitor is connected to the other end of the second capacitor and grounded;

[0018] A third capacitor, one end of the third capacitor is connected to the eighth pin of the motor drive chip, and the other end of the third capacitor is connected to the seventh pin of the motor drive chip;

[0019] A fourth capacitor, one end of the fourth capacitor is connected to the sixth pin of the motor drive chip and the other end of the third capacitor and grounded, and the other end of the fourth capacitor is connected to the fifth pin of the motor drive chip;

[0020] A fifth capacitor, one end of the fifth capacitor is connected to one end of the fourth capacitor and the first terminal of the non-linear spring motor, and the other end of the fifth capacitor is connected to one end of the third capacitor and the second terminal of the non-linear spring motor;

[0021] The fourth terminal of the non-linear spring motor is connected to the acquisition terminal of the gear controller, and the fifth terminal of the non-linear spring motor is grounded.

[0022] Preferably, an energy-saving circuit is further included. The signal receiving end of the energy-saving circuit is connected to the gear controller, and the control end of the energy-saving circuit is connected to the third terminal and the fourth terminal of the non-linear spring motor.

[0023] Preferably, the energy-saving circuit includes:

[0024] A triode, the collector of the triode is connected to the third terminal of the non-linear spring motor and one end of a third resistor, and the other end of the third resistor is connected to the fourth terminal of the non-linear spring motor;

[0025] A fourth resistor, one end of the fourth resistor is connected to the base of the triode and one end of a fifth resistor, the other end of the fourth resistor is connected to the gear controller, and the other end of the fifth resistor is connected to the emitter of the triode;

[0026] The other end of the fourth resistor serves as the signal receiving end of the energy-saving circuit, and the other end of the third resistor and the collector of the triode serve as the control end of the energy-saving circuit.

[0027] Preferably, a voltage stabilizing circuit is further included. The power supply end of the voltage stabilizing circuit is connected to the working power supply, and the first terminal of the voltage stabilizing circuit is connected to the emitter of the triode.

[0028] Preferably, the voltage stabilizing circuit includes:

[0029] A voltage stabilizing diode, the first terminal of the voltage stabilizing diode is grounded, the second terminal of the voltage stabilizing diode is connected to one end of a sixth capacitor and a seventh capacitor and the emitter of the triode, and the other end of the sixth capacitor is connected to the other end of the seventh capacitor and grounded;

[0030] The eighth capacitor, one end of the eighth capacitor is connected to the third terminal of the voltage regulator diode, one end of the ninth capacitor and the working power supply, and the other end of the eighth capacitor is connected to the other end of the ninth capacitor and grounded;

[0031] The other end of the sixth capacitor serves as the first terminal of the voltage regulation circuit, and one end of the eighth capacitor serves as the power supply terminal of the voltage regulation circuit.

[0032] The present invention also provides a method for adjusting the resistance gear of a fitness chair based on a non-linear spring motor, which is applied to the above-mentioned fitness chair resistance gear adjustment system, including:

[0033] Step S1, when the gear controller receives the resistance gear adjustment instruction, it matches the corresponding standard spring tension value in the look-up table according to the target gear as the target spring tension value;

[0034] Step S2, the gear controller collects the real-time spring tension value of the non-linear spring motor;

[0035] Step S3, the gear controller determines whether the real-time spring tension value is less than the target spring tension value:

[0036] If so, control the non-linear spring motor to tighten the pull rope to reduce the gap between the magnetic pole piece and the magnetic force assembly until the real-time spring tension value is equal to the target spring tension value;

[0037] If not, control the non-linear spring motor to first loosen and then tighten the pull rope to increase the gap between the magnetic pole piece and the magnetic force assembly until the real-time spring tension value is equal to the target spring tension value.

[0038] Preferably, the step S3 includes:

[0039] Step S31, the gear controller determines whether the target spring tension value is greater than the real-time spring tension value:

[0040] If so, go to step S32;

[0041] If not, go to step S33;

[0042] Step S32, the gear controller controls the non-linear spring motor to tighten the pull rope to reduce the gap between the magnetic pole piece and the magnetic force assembly until the target spring tension value is equal to the real-time spring tension value;

[0043] Step S33, the gear controller controls the non-linear spring motor to loosen the pull rope, and determines whether the target spring tension value is less than the real-time spring tension value during the loosening process:

[0044] If so, return to step S33;

[0045] If not, control the non-linear spring motor to tighten the pulling rope until the target spring tension value is equal to the real-time spring tension value.

[0046] The above technical solution has the following advantages or beneficial effects:

[0047] 1) The user uses the gear adjustment terminal to send a gear adjustment signal, and the gear controller set inside the fitness chair can complete the gear adjustment according to the gear adjustment signal, with simple operation;

[0048] 2) The non-linear spring motor is used to pull the pulling rope to change the gap between the magnetic pole piece and the magnetic force component, thereby adjusting the resistance. When shifting up, tighten the pulling rope to gradually adjust the spring tension value until it is equal to the target tension value. When shifting down, first loosen the pulling rope and then tighten the pulling rope to gradually adjust the spring tension value until it is equal to the target tension value, avoiding inaccurate gear adjustment caused by inertia;

[0049] 3) The energy-saving circuit enables the gear controller to collect the output voltage of the non-linear spring motor only when the gear needs to be adjusted, saving power consumption; the voltage stabilization circuit reduces the fluctuation of the output voltage, reduces the error of the spring tension value, and makes the gear adjustment more accurate. Description of the Drawings

[0050] Figure 1 It is a schematic structural diagram of a fitness chair resistance gear adjustment system based on a non-linear spring motor in a preferred embodiment of the present invention;

[0051] Figure 2 It is a schematic structural diagram of the gear controller in a preferred embodiment of the present invention;

[0052] Figure 3 It is a circuit diagram of the drive circuit, energy-saving circuit and voltage stabilization circuit in a preferred embodiment of the present invention;

[0053] Figure 4 It is a schematic flow diagram of a fitness chair resistance gear adjustment method based on a non-linear spring motor in a preferred embodiment of the present invention;

[0054] Figure 5 It is a schematic sub-flow diagram of step S3 in a preferred embodiment of the present invention. Detailed Embodiments

[0055] The present invention will be described in detail below with reference to the drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the gist of the present invention.

[0056] In a preferred embodiment of the present invention, in view of the above problems existing in the prior art, a resistance gear adjustment system for a fitness chair based on a non-linear spring motor is provided. A magnetic component 1 and a reed 2 are arranged inside the fitness chair. One end of the reed 2 is fixed beside the magnetic component 1, and a pole piece 3 is arranged on the side of the reed 2 close to the magnetic component 1. As Figure 1 and Figure 2 shown, the resistance gear adjustment system includes:

[0057] A non-linear spring motor 4, which is arranged inside the fitness chair and is connected to the other end of the reed 2 through a pull rope 5;

[0058] A gear controller 6, which is arranged inside the fitness chair and is connected to the non-linear spring motor 4. The gear controller 6 includes:

[0059] A storage module 100, which is used to store a comparison table between a plurality of pre-configured standard gears and corresponding standard spring tension values;

[0060] A tension value matching module 200, which is connected to the storage module 100 and is used to, when receiving an external resistance gear adjustment instruction including a target gear, match a corresponding standard spring tension value as the target spring tension value according to the target gear in the comparison table;

[0061] A real-time acquisition module 300, which is used to acquire the real-time spring tension value of the non-linear spring motor 4;

[0062] A gear adjustment module 400, which is respectively connected to the tension value matching module 200 and the real-time acquisition module 300, and is used to control the non-linear spring motor 4 to tighten the pull rope 5 when the real-time spring tension value is less than the target spring tension value, so as to reduce the gap between the pole piece 3 and the magnetic component 1, and to control the non-linear spring motor 4 to first loosen and then tighten the pull rope 5 when the real-time spring tension value is greater than the target spring tension value, so as to increase the gap between the pole piece 3 and the magnetic component 1 until the real-time spring tension value is equal to the target spring tension value.

[0063] Specifically, in this embodiment, when the gear controller 6 judges to upshift or downshift according to the received resistance gear adjustment instruction, when it needs to upshift, it controls the non-linear spring motor 4 to rotate forward to tighten the pull rope 5. As Figure 1 shown, since the pull rope 5 surrounds the magnetic component 1, tightening the pull rope 5 at this time will cause one end of the reed 2 to be subjected to a tension force along the A direction; the other end of the reed 2 is fixed, so that the reed 2 bends in the direction close to the magnetic component 1 under the action of the tension force. There is an attractive force between the pole piece 3 and the magnetic component 1. Since the gap between the pole piece 3 and the magnetic component 1 becomes smaller, the attractive force between them increases, and the corresponding resistance also increases.

[0064] The gear controller 6 obtains the spring tension value of the non-linear spring motor 4 by collecting the output voltage of the non-linear spring motor 4 and converting it into a digital value using an analog-to-digital converter. The spring tension values for each resistance gear have been obtained during the testing phase; gradually tighten the pull rope 5 until the real-time spring tension value of the non-linear spring motor 4 is equal to the target spring tension value corresponding to the target gear, thus completing the adjustment of the resistance gear.

[0065] When downshifting is required, control the non-linear spring motor 4 to reverse to relax the pull rope 5. Since the reed 2 is elastic, the bent reed 2 will automatically rebound after the pull rope 5 is relaxed. Due to inertia, the length of the relaxed pull rope 5 will be relatively long, resulting in the spring tension value of the non-linear spring motor 4 being lower than the target spring tension value of the target gear. Therefore, after relaxing the pull rope 5, it is necessary to gradually tighten it again until the real-time spring tension value of the non-linear spring motor 4 is equal to the target spring tension value corresponding to the target gear, completing the adjustment of the resistance gear.

[0066] In a preferred embodiment of the present invention, as Figure 2 shown, it further includes a gear adjustment terminal 7, which is connected to the gear controller 6 and is used for the user to send a resistance gear adjustment instruction to the gear controller 6, so that the gear controller 6 adjusts the resistance gear according to the gear adjustment instruction.

[0067] Specifically, in this embodiment, the user sends a gear adjustment instruction to the gear controller 6 through the gear adjustment terminal 7. The gear adjustment terminal 7 can adopt various devices such as a mobile terminal and a gear adjustment button, simplifying the previous steps of manually adjusting the gear.

[0068] In a preferred embodiment of the present invention, as Figure 2 shown, the gear adjustment module 400 includes:

[0069] A judgment unit 410, which is used to generate an upshift signal when it judges that the target spring tension value is greater than the real-time spring tension value, and generate a downshift signal when it judges that the target spring tension value is less than the real-time spring tension value;

[0070] An upshift unit 420, which is connected to the judgment unit 410 and is used to control the non-linear spring motor 4 to tighten the pull rope according to the upshift signal until the target spring tension value is equal to the real-time spring tension value;

[0071] A downshift unit 430, which is connected to the judgment unit 410 and is used to control the non-linear spring motor 4 to relax according to the downshift signal, and tighten the pull rope 5 when it detects that the target spring tension value is less than the real-time spring tension value during the relaxation process until the target spring tension value is equal to the real-time spring tension value.

[0072] Specifically, in this embodiment, the gear controller 6 compares the target spring tension value corresponding to the target gear with the real-time spring tension value. If the target spring tension value is greater than the real-time spring tension value, it indicates that an upshift is required; otherwise, a downshift is required.

[0073] When upshifting, only need to tighten the pull rope 5 until the target spring tension value is equal to the real-time spring tension value to complete the upshift.

[0074] When downshifting, due to the inertial effect of the reed 2 rebounding, the length of the relaxed pull rope 5 will be relatively long, and the real-time spring tension value will be one or two gears lower than the target spring tension value. During the downshift process, it is necessary to first relax the pull rope 5. When it is detected that the target spring tension value is less than the real-time spring tension value during the relaxation process, tighten the pull rope 5 until the target spring tension value is equal to the real-time spring tension value to complete the downshift. Through this control method, the problem of inaccurate gear shifting caused by inertia during the downshift process is avoided.

[0075] In a preferred embodiment of the present invention, as Figure 3 shown, it further includes a drive circuit. The gear controller drives the non-linear spring motor 4 to rotate through the drive circuit. The drive circuit includes:

[0076] A first resistor R1, one end of the first resistor R1 is connected to the forward rotation signal terminal A of the gear controller 6, and the other end of the first resistor R1 is connected to the second pin of the motor drive chip U1. One end of a second resistor R2 is connected to the reverse rotation signal terminal B of the gear controller 6, and the other end of the second resistor R2 is connected to the third pin of the motor drive chip U1;

[0077] A first capacitor C1, one end of the first capacitor C1 is connected to the working power supply VC, one end of the second capacitor C2, and the fourth pin of the motor drive chip U1. The other end of the first capacitor C1 is connected to the other end of the second capacitor C2 and grounded;

[0078] A third capacitor C3, one end of the third capacitor C3 is connected to the eighth pin of the motor drive chip U1, and the other end of the third capacitor C3 is connected to the seventh pin of the motor drive chip U1;

[0079] A fourth capacitor C4, one end of the fourth capacitor C4 is connected to the sixth pin of the motor drive chip U1 and the other end of the third capacitor C3 and grounded, and the other end of the fourth capacitor C4 is connected to the fifth pin of the motor drive chip U1;

[0080] A fifth capacitor C5, one end of the fifth capacitor C5 is connected to one end of the fourth capacitor C4 and the first connection terminal of the non-linear spring motor 4, and the other end of the fifth capacitor C5 is connected to one end of the third capacitor C3 and the second connection terminal of the non-linear spring motor 4;

[0081] The fourth terminal of the non-linear spring motor 4 is connected to the acquisition terminal C of the gear controller 6, and the fifth terminal of the non-linear spring motor 4 is grounded.

[0082] Specifically, in this embodiment, the second pin and the third pin of the motor drive chip U1 are respectively connected to the forward rotation signal terminal and the reverse rotation signal terminal of the gear controller 6. The gear controller 6 emits forward rotation signals and reverse rotation signals to drive the spring motor 4 to tighten or release the pull rope 5, thereby adjusting the resistance gear of the fitness chair.

[0083] The gear controller collects the output voltage of the non-linear spring motor 4 through the acquisition terminal C. The output voltage of the non-linear spring motor 4 reflects the tensile force value of the spring inside the non-linear spring motor 4. Since the output voltage is a voltage signal rather than a directly usable digital signal, the gear controller uses an analog-to-digital converter to convert the output voltage into a digital signal.

[0084] During the test phase, the voltage signal corresponding to the position where the reed 2 is at the pre-designed highest gear is used as the conversion reference to obtain the real-time spring tensile force value, and the spring tensile force values corresponding to each gear are obtained respectively. The conversion reference here is only an optional conversion reference in the present invention, and the conversion reference can be changed according to the test requirements during different tests.

[0085] In a preferred embodiment of the present invention, as Figure 3 shown, an energy-saving circuit is further included. The signal receiving end of the energy-saving circuit is connected to the gear controller 6, and the control end of the energy-saving circuit is connected to the third terminal and the fourth terminal of the non-linear spring motor 4.

[0086] In a preferred embodiment of the present invention, as Figure 3 shown, the energy-saving circuit includes:

[0087] A triode Q1, the collector of the triode Q1 is connected to the third terminal of the non-linear spring motor 4 and one end of the third resistor R3, and the other end of the third resistor R3 is connected to the fourth terminal of the non-linear spring motor 4;

[0088] A fourth resistor R4, one end of the fourth resistor R4 is connected to the base of the triode Q1 and one end of the fifth resistor R5, the other end of the fourth resistor R4 is connected to the gear controller 6, and the other end of the fifth resistor R5 is connected to the emitter of the triode Q1;

[0089] The other end of the fourth resistor R4 serves as the signal receiving end of the energy-saving circuit, and the other end of the third resistor R3 and the collector of the triode Q1 serve as the control end of the energy-saving circuit.

[0090] Specifically, in this embodiment, an energy-saving circuit is provided to reduce power consumption. When the gear controller receives a gear adjustment instruction, the triode is turned on, and the acquisition end of the gear controller can collect the output voltage of the spring motor. When the gear controller does not receive a gear adjustment instruction, the triode is turned off, and the gear controller does not collect the output voltage of the spring motor. This enables the gear controller to collect and convert the output voltage signal only when gear adjustment is required, thereby saving power consumption.

[0091] In a preferred embodiment of the present invention, as Figure 3 shown, it further includes a voltage stabilizing circuit. The power supply terminal of the voltage stabilizing circuit is connected to the working power supply VC, and the first wiring terminal of the voltage stabilizing circuit is connected to the emitter of the triode Q1.

[0092] In a preferred embodiment of the present invention, as Figure 3 shown, the voltage stabilizing circuit includes:

[0093] A voltage stabilizing diode W1. The first wiring terminal of the voltage stabilizing diode W1 is grounded. The second wiring terminal of the voltage stabilizing diode W1 is connected to one end of the sixth capacitor C6, the seventh capacitor C7, and the emitter of the triode Q1. The other end of the sixth capacitor C6 is connected to the other end of the seventh capacitor C7 and grounded;

[0094] An eighth capacitor C8. One end of the eighth capacitor C8 is connected to the third wiring terminal of the voltage stabilizing diode W1, one end of the ninth capacitor C9, and the working power supply VC. The other end of the eighth capacitor C8 is connected to the other end of the ninth capacitor C9 and grounded;

[0095] The other end of the sixth capacitor C6 serves as the first wiring terminal of the voltage stabilizing circuit, and one end of the eighth capacitor C8 serves as the power supply terminal of the voltage stabilizing circuit.

[0096] Specifically, in this embodiment, a voltage stabilizing circuit is also provided to stabilize the voltage through a voltage stabilizing diode, preventing the output voltage received by the gear controller from fluctuating too much, resulting in too large an error in the obtained real-time spring tension value.

[0097] The present invention also provides a method for adjusting the resistance gear of a fitness chair based on a non-linear spring motor, which is applied to the above resistance gear adjustment system, as Figure 4 shown, and includes:

[0098] Step S1, when the gear controller receives a resistance gear adjustment instruction, it matches the corresponding standard spring tension value in the look-up table according to the target gear as the target spring tension value;

[0099] Step S2, the gear controller collects the real-time spring tension value of the non-linear spring motor;

[0100] Step S3, the gear controller determines whether the real-time spring tension value is less than the target spring tension value:

[0101] If so, control the non-linear spring motor to tighten the pull rope to reduce the gap between the magnetic pole piece and the magnetic component until the real-time spring tension value is equal to the target spring tension value;

[0102] If not, control the non-linear spring motor to first loosen and then tighten the pull rope to increase the gap between the magnetic pole piece and the magnetic component until the real-time spring tension value is equal to the target spring tension value.

[0103] In a preferred embodiment of the present invention, as Figure 5 shown, step S3 includes:

[0104] Step S31, the gear controller determines whether the target spring tension value is greater than the real-time spring tension value:

[0105] If so, proceed to step S32;

[0106] If not, proceed to step S33;

[0107] Step S32, the gear controller controls the non-linear spring motor to tighten the pull rope to reduce the gap between the magnetic pole piece and the magnetic component until the target spring tension value is equal to the real-time spring tension value;

[0108] Step S33, the gear controller controls the non-linear spring motor to loosen the pull rope, and during the loosening process, determines whether the target spring tension value is less than the real-time spring tension value:

[0109] If so, return to step S33;

[0110] If not, control the non-linear spring motor to tighten the pull rope until the target spring tension value is equal to the real-time spring tension value.

[0111] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the content of this specification and the drawings should be included in the protection scope of the present invention.

Claims

1. A resistance gear adjustment system for a fitness chair based on a non-linear spring motor, characterized in that, The interior of the fitness chair is provided with a magnetic component and a reed. One end of the reed is fixed beside the magnetic component, and a magnetic pole piece is arranged on the side of the reed close to the magnetic component. Then, the resistance gear adjustment system includes: A non-linear spring motor, which is arranged inside the fitness chair and is connected to the other end of the reed through a pull rope; A gear controller, which is arranged inside the fitness chair and is connected to the non-linear spring motor. The gear controller includes: A storage module, which is used to store a comparison table between a plurality of pre-configured standard gears and corresponding standard spring tension values; A tension value matching module, which is connected to the storage module and is used to, when receiving an external resistance gear adjustment instruction including a target gear, match and obtain the corresponding standard spring tension value as the target spring tension value in the comparison table according to the target gear; A real-time acquisition module, which is used to acquire the real-time spring tension value of the non-linear spring motor; A gear adjustment module, which is respectively connected to the tension value matching module and the real-time acquisition module, and is used to control the non-linear spring motor to tighten the pull rope when the real-time spring tension value is less than the target spring tension value, so as to reduce the gap between the magnetic pole piece and the magnetic component, and generate a downshift signal when the real-time spring tension value is greater than the target spring tension value, control the non-linear spring motor to relax according to the downshift signal, and tighten the pull rope when it is detected that the target spring tension value is less than the real-time spring tension value during the relaxation process, so as to increase the gap between the magnetic pole piece and the magnetic component until the real-time spring tension value is equal to the target spring tension value.

2. The resistance gear adjustment system for a fitness chair according to claim 1, characterized in that, It further includes a gear adjustment terminal, which is connected to the gear controller and is used for the user to send the resistance gear adjustment instruction to the gear controller, so that the gear controller adjusts the resistance gear according to the gear adjustment instruction.

3. The resistance gear adjustment system for a fitness chair according to claim 1, characterized in that, The gear adjustment module includes: A judgment unit, which is used to generate an upshift signal when it is judged that the target spring tension value is greater than the real-time spring tension value; An upshift unit, which is connected to the judgment unit and is used to control the non-linear spring motor to tighten the pull rope according to the upshift signal until the target spring tension value is equal to the real-time spring tension value.

4. The resistance gear adjustment system for a fitness chair according to claim 1, characterized in that, It further includes a drive circuit. The gear controller drives the non-linear spring motor to rotate through the drive circuit. The drive circuit includes: A first resistor, one end of the first resistor is connected to the forward rotation signal terminal of the gear controller, the other end of the first resistor is connected to the second pin of the motor drive chip, one end of a second resistor is connected to the reverse rotation signal terminal of the gear controller, and the other end of the second resistor is connected to the third pin of the motor drive chip; A first capacitor, one end of the first capacitor is connected to the working power supply, one end of a second capacitor and the fourth pin of the motor drive chip, and the other end of the first capacitor is connected to the other end of the second capacitor and grounded; A third capacitor, one end of the third capacitor is connected to the eighth pin of the motor drive chip, and the other end of the third capacitor is connected to the seventh pin of the motor drive chip; The fourth capacitor, one end of the fourth capacitor is connected to the sixth pin of the motor drive chip and the other end of the third capacitor and grounded, and the other end of the fourth capacitor is connected to the fifth pin of the motor drive chip; The fifth capacitor, one end of the fifth capacitor is connected to one end of the fourth capacitor and the first terminal of the non-linear spring motor, and the other end of the fifth capacitor is connected to one end of the third capacitor and the second terminal of the non-linear spring motor; The fourth terminal of the non-linear spring motor is connected to the acquisition terminal of the gear controller, and the fifth terminal of the non-linear spring motor is grounded.

5. The resistance gear adjustment system for a fitness chair according to claim 4, characterized in that, It further includes an energy-saving circuit, the signal receiving end of the energy-saving circuit is connected to the gear controller, and the control end of the energy-saving circuit is connected to the third terminal and the fourth terminal of the non-linear spring motor.

6. The resistance gear adjustment system for a fitness chair according to claim 5, characterized in that, The energy-saving circuit includes: A triode, the collector of the triode is connected to the third terminal of the non-linear spring motor and one end of the third resistor, and the other end of the third resistor is connected to the fourth terminal of the non-linear spring motor; The fourth resistor, one end of the fourth resistor is connected to the base of the triode and one end of the fifth resistor, the other end of the fourth resistor is connected to the gear controller, and the other end of the fifth resistor is connected to the emitter of the triode; The other end of the fourth resistor serves as the signal receiving end of the energy-saving circuit, and the other end of the third resistor and the collector of the triode serve as the control end of the energy-saving circuit.

7. The resistance gear adjustment system for a fitness chair according to claim 6, characterized in that, It further includes a voltage stabilizing circuit, the power supply end of the voltage stabilizing circuit is connected to the working power supply, and the first terminal of the voltage stabilizing circuit is connected to the emitter of the triode.

8. The resistance gear adjustment system for a fitness chair according to claim 7, characterized in that, The voltage stabilizing circuit includes: A voltage stabilizing diode, the first terminal of the voltage stabilizing diode is grounded, the second terminal of the voltage stabilizing diode is connected to one end of the sixth capacitor and the seventh capacitor and the emitter of the triode, and the other end of the sixth capacitor is connected to the other end of the seventh capacitor and grounded; The eighth capacitor, one end of the eighth capacitor is connected to the third terminal of the voltage stabilizing diode and one end of the ninth capacitor and the working power supply, and the other end of the eighth capacitor is connected to the other end of the ninth capacitor and grounded; The other end of the sixth capacitor serves as the first terminal of the voltage stabilizing circuit, and one end of the eighth capacitor serves as the power supply end of the voltage stabilizing circuit.

9. A method for adjusting the resistance gear of a fitness chair based on a non-linear spring motor, characterized in that, Applied to the resistance gear adjustment system according to any one of claims 1-8, including: Step S1, when the gear controller receives the resistance gear adjustment instruction, the corresponding standard spring tension value is obtained as the target spring tension value by matching in the look-up table according to the target gear; Step S2, the gear controller collects the real-time spring tension value of the non-linear spring motor; Step S3, the gear controller judges whether the real-time spring tension value is less than the target spring tension value: If so, control the non-linear spring motor to tighten the pulling rope to reduce the gap between the magnetic pole piece and the magnetic force assembly until the real-time spring tension value is equal to the target spring tension value; If not, control the non-linear spring motor to first relax and then tighten the pulling rope to increase the gap between the magnetic pole piece and the magnetic force assembly until the real-time spring tension value is equal to the target spring tension value.

10. The method for adjusting the resistance gear of a fitness chair according to claim 9, characterized in that, The step S3 includes: Step S31, the gear controller determines whether the target spring tension value is greater than the real-time spring tension value: If so, proceed to step S32; If not, proceed to step S33; Step S32, the gear controller controls the non-linear spring motor to tighten the pulling rope to reduce the gap between the magnetic pole piece and the magnetic force assembly until the target spring tension value is equal to the real-time spring tension value; Step S33, the gear controller controls the non-linear spring motor to relax the pulling rope and determines whether the target spring tension value is less than the real-time spring tension value during the relaxation process: If so, return to step S33; If not, control the non-linear spring motor to tighten the pulling rope until the target spring tension value is equal to the real-time spring tension value.

Images