CN113058199A - Leg exercise device with adjustable exercise resistance and calorie calculation method thereof - Google Patents

Leg exercise device with adjustable exercise resistance and calorie calculation method thereof Download PDF

Info

Publication number
CN113058199A
CN113058199A CN202110284366.6A CN202110284366A CN113058199A CN 113058199 A CN113058199 A CN 113058199A CN 202110284366 A CN202110284366 A CN 202110284366A CN 113058199 A CN113058199 A CN 113058199A
Authority
CN
China
Prior art keywords
elastic rope
fixedly connected
user
exercise
adjustable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110284366.6A
Other languages
Chinese (zh)
Inventor
张量
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou 37 Deg C Smart Home Co ltd
Original Assignee
Guangzhou 37 Deg C Smart Home Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou 37 Deg C Smart Home Co ltd filed Critical Guangzhou 37 Deg C Smart Home Co ltd
Priority to CN202110284366.6A priority Critical patent/CN113058199A/en
Publication of CN113058199A publication Critical patent/CN113058199A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/11Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00058Mechanical means for varying the resistance
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/02Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resilient force-resisters
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/04Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable multiple steps, i.e. more than one step per limb, e.g. steps mounted on endless loops, endless ladders
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/04Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
    • A63B23/0405Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs involving a bending of the knee and hip joints simultaneously
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B24/00Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
    • A63B24/0087Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/17Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed

Abstract

The invention relates to a leg exercise device with adjustable exercise resistance and a calorie calculation method thereof, and the technical scheme is as follows: the device comprises a shell, a pedal, a sliding rail mechanism, an elastic rope component for providing motion resistance for a user, an adjusting mechanism for adjusting the tension degree of the elastic rope component, a driving mechanism for driving the adjusting mechanism to rotate, a first sensor for measuring the tension degree of the elastic rope component, a counting mechanism, a processor and a communication module; the sliding rail mechanism, the first sensor, the counting mechanism, the processor and the communication module are all arranged in the shell; the elastic rope assembly is respectively and fixedly connected with the sliding rail mechanism and the adjusting mechanism; the driving mechanism is fixedly connected with the adjusting mechanism; the pedal is fixedly connected with the elastic rope component; the counting mechanism is fixedly connected with the sliding rail mechanism; the driving mechanism, the first sensor, the counting mechanism and the communication module are electrically connected with the processor; the method and the device have the effects of adjusting the exercise resistance and accurately calculating the calories consumed by the user.

Description

Leg exercise device with adjustable exercise resistance and calorie calculation method thereof
Technical Field
The invention relates to the technical field of leg exercise devices, in particular to a leg exercise device with adjustable exercise resistance and a calorie calculation method thereof.
Background
At present, modern people usually work in front of an office table and face nine nights and five nights, and the body of the modern people cannot achieve effective exercise for a long time, so that various fitness sports equipment is endless at present.
The fitness sports equipment is various in types, comprises a exerciser for exercising hands, a waist and legs, and is more suitable for people sitting in front of an office table for a long time, but the existing leg exerciser is difficult to adjust the exercise resistance according to the actual requirement of a user and accurately calculate the calories consumed by the user in the exercise process, so that the research on the adjustable exercise resistance leg exerciser for accurately calculating the calories consumed by the user and the calorie calculation method thereof is very necessary.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the leg exercise machine with adjustable exercise resistance and the calorie calculation method thereof, which have the functional advantages of adjustable exercise resistance and accurate calculation of the calorie consumed by the user.
The technical purpose of the invention is realized by the following technical scheme:
an exercise resistance adjustable leg exercise machine comprising: the device comprises a shell, a pedal, a sliding rail mechanism, an elastic rope assembly, an adjusting mechanism, a driving mechanism, a first sensor, a counting mechanism, a processor and a communication module, wherein the elastic rope assembly is used for providing motion resistance for a user, the adjusting mechanism is used for adjusting the tension degree of the elastic rope assembly, the driving mechanism is used for driving the adjusting mechanism to rotate, the first sensor is used for measuring the tension degree of the elastic rope assembly, the counting mechanism is used for collecting the number of steps of the user in motion, the processor is used for receiving data collected by the first sensor and the counting mechanism and processing the data, and the communication module is used for realizing data transmission of the processor and; the sliding rail mechanism, the first sensor, the counting mechanism, the processor and the communication module are all arranged in the shell; the elastic rope assembly is respectively and fixedly connected with the sliding rail mechanism and the adjusting mechanism; the driving mechanism is fixedly connected with the adjusting mechanism; the pedal is fixedly connected with the elastic rope component; the counting mechanism is fixedly connected with the sliding rail mechanism; the driving mechanism, the first sensor, the counting mechanism and the communication module are electrically connected with the processor.
Optionally, the bungee cord assembly includes: the adjustable elastic rope, the foundation elastic rope, the pressing block, the first connecting block and the second connecting block; the first connecting block is fixedly connected with the middle part of the adjustable elastic rope; the second connecting block is fixedly connected with the foundation elastic rope; the first connecting block and the second connecting block are clamped with the pressing block; the pressing block is fixedly connected with the pedal and the sliding rail mechanism respectively; both ends of the adjustable elastic rope are fixedly connected with the adjusting mechanism; both ends of the basic elastic rope are fixedly connected with the shell.
Optionally, the adjusting mechanism includes: the double-end screw rod, the polished rod, the first sliding block, the second sliding block, the first gear and the second gear; the double-end screw rod is rotationally connected with the shell; the polished rod is fixedly connected with the shell; one end of the double-end screw rod is in threaded connection with the first sliding block, and the other end of the double-end screw rod is in threaded connection with the second sliding block; the first gear is fixedly connected with the middle part of the double-end screw rod; the second gear is in meshed connection with the first gear; the second gear is fixedly connected with the driving mechanism; one end of the adjustable elastic rope is fixedly connected with the first sliding block, and the other end of the adjustable elastic rope is fixedly connected with the second sliding block.
Optionally, the slide rail mechanism includes: the device comprises a rail, a sliding block, a first group of pulleys for limiting, a second group of pulleys for bearing and a third group of pulleys for bearing; the track is fixedly connected with the shell; a first sliding chute, a second sliding chute and a third sliding chute are arranged on the track; the first group of pulleys are connected with the first sliding chute in a sliding manner; the second group of pulleys is in sliding connection with the second sliding chute; the third group of pulleys is in sliding connection with the third sliding chute; the first group of pulleys, the second group of pulleys and the third group of pulleys are all rotationally connected with the sliding block; the sliding block is fixedly connected with the counting mechanism.
Optionally, the drive mechanism comprises: the device comprises a motor, a steering box, a rotating shaft and an encoder; the motor is fixedly connected with the shell; the output end of the motor is fixedly connected with the input end of the steering box; the rotating shaft is fixedly connected with the output end of the steering box; the encoder and the second gear are both fixedly connected with the rotating shaft; the motor and the encoder are both electrically connected with the processor.
Optionally, the method further includes: the second sensor is used for detecting the reset state of the elastic rope component and the third sensor is used for detecting the maximum tension degree of the elastic rope component; the second sensor and the third sensor are both arranged on the shell; the second sensor and the third sensor are both electrically connected with the processor.
Optionally, the counting mechanism comprises: a first magnet, a second magnet and a hall sensor; the first magnet and the second magnet are both fixedly connected with the sliding rail mechanism; the Hall sensor is fixedly connected with the shell; the Hall sensor is electrically connected with the processor.
The invention also provides a calorie calculation method based on the leg exercise device with adjustable exercise resistance, which comprises the following steps:
acquiring the gender, the weight and the addition coefficient of a locomotor of a user;
calculating the basic calorie consumed by the user at each step in the movement according to the user gender, the user weight and the addition coefficient of the exerciser;
acquiring the tension degree of the elastic rope assembly, the user movement step number and a step number correction coefficient generated by the processor after the user movement is finished according to the movement state of the user;
and calculating the total calorie consumed by the user in the movement according to the tension of the elastic rope component, the step number of the user in the movement and the step number correction coefficient.
Optionally, the user consumes a base calorie R per step in the movement1The calculation formula of (2) is as follows:
R1=n1×n2×n3×n4wherein n is1Is the addition coefficient of the locomotor; n is2Standard card path for user to walk with stepConsumption of the seeds; n is3Is a gender coefficient; n is4The user weight coefficient is obtained according to a user gender weight lookup table.
Optionally, the total calories R consumed by the user in the sport2The calculation formula of (2) is as follows:
R2=R1×n5×n6×n7wherein n is5The ratio of the motion resistance generated by the tensity of the elastic rope component to the motion resistance of walking with vigorous strides; n is6The number of steps of the user's exercise; n is7The step number correction coefficient.
In conclusion, the invention has the following beneficial effects:
1. the tightness of the elastic rope component can be adjusted, and the resistance of the elastic rope component to the pedal can be adjusted, so that a user can conveniently adjust the motion resistance according to the actual condition;
2. the tightness of the adjustable elastic rope can be accurately calculated through the arrangement of the first sensor and the encoder, so that the movement resistance of the elastic rope component to the sliding block is obtained, and the total calorie consumed by a user in movement can be accurately calculated;
3. the arrangement of the second group of pulleys and the third group of pulleys mainly plays a role in bearing, and the arrangement of the first group of pulleys plays a role in limiting the sliding block, so that the stability of the sliding block in the sliding process is further improved;
4. through the setting of second sensor and third sensor, can realize the restoration of adjustable stretch cord and strengthen the protection to adjustable stretch cord, prolong adjustable stretch cord's life.
Drawings
FIG. 1 is an assembly view of the present invention;
FIG. 2 is an exploded schematic view of the present invention;
FIG. 3 is an exploded view of the bungee cord assembly of the present invention;
FIG. 4 is a schematic view of the adjusting mechanism of the present invention;
FIG. 5 is a circuit architecture diagram of the present invention;
fig. 6 is a flowchart of a calorie calculation method of the present invention.
In the figure: 1. a housing; 11. a first sensor; 12. a second sensor; 13. a third sensor; 2. a pedal; 3. a slide rail mechanism; 31. a track; 32. a slider; 33. a first set of pulleys; 34. a second set of pulleys; 35. a third set of pulleys; 4. a bungee cord assembly; 41. an adjustable elastic cord; 42. a base elastic cord; 43. briquetting; 44. a first connection block; 45. a second connecting block; 5. an adjustment mechanism; 51. a double-end screw rod; 52. a polish rod; 53. a first slider; 54. a second slider; 55. a first gear; 56. a second gear; 6. a drive mechanism; 61. a motor; 62. a steering box; 7. a counting mechanism; 71. a first magnet; 72. a second magnet; 73. a Hall sensor; 8. a processor; 9. and a communication module.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, configuration, and operation, and therefore should not be construed as limiting the present invention.
The invention is described in detail below with reference to the figures and examples.
The present invention provides a leg exercise device with adjustable exercise resistance and a calorie calculation method thereof, as shown in fig. 1 to 5, comprising: the device comprises a shell 1, a pedal 2, a sliding rail mechanism 3, an elastic rope component 4 for providing motion resistance for a user, an adjusting mechanism 5 for adjusting the tension degree of the elastic rope component 4, a driving mechanism 6 for driving the adjusting mechanism 5 to rotate, a first sensor 11 for measuring the tension degree of the elastic rope component 4, a counting mechanism 7 for collecting the number of steps of the user in motion, a processor 8 for receiving and processing data collected by the first sensor 11 and the counting mechanism 7, and a communication module 9 for realizing data transmission of the processor 8 and a mobile terminal; the sliding rail mechanism 3, the first sensor 11, the counting mechanism 7, the processor 8 and the communication module 9 are all arranged in the shell 1; the elastic rope component 4 is respectively fixedly connected with the sliding rail mechanism 3 and the adjusting mechanism 5; the driving mechanism 6 is fixedly connected with the adjusting mechanism 5; the pedal 2 is fixedly connected with the elastic rope component 4; the counting mechanism 7 is fixedly connected with the sliding rail mechanism 3; the driving mechanism 6, the first sensor 11, the counting mechanism 7 and the communication module 9 are all electrically connected with the processor 8.
In practical application, the shell 1 is provided with a sliding hole for the pedal 2 to slide; in the application, the number of the sliding holes is two, the number of the pedals 2 is two, the number of the sliding rail mechanisms 3 is also two, the number of the elastic rope assemblies 4 is also two, the number of the adjusting mechanisms 5 is also two, the two pedals 2 slide on the two sliding holes respectively, the two pedals 2 are correspondingly connected with the two elastic rope assemblies 4 one by one, the two elastic rope assemblies 4 are correspondingly connected with the two sliding rail mechanisms 3 one by one, and the two adjusting mechanisms 5 are correspondingly connected with the two elastic rope assemblies 4 one by one; the number of the counting mechanisms 7 is two, and the two counting mechanisms 7 are correspondingly connected with the two slide rail mechanisms 3 one by one and used for detecting the number of steps of the pedal 2 sliding on the slide rail mechanisms 3; under the condition that a user uses the exercise device, the user steps on the pedal 2 to drive the pedal 2 to do reciprocating motion, and in the process that the pedal 2 does reciprocating motion, due to the action of the elastic rope component 4, motion resistance is provided for the user in the process of exercise, so that the purpose of exercise and fitness is achieved; through adjustment mechanism 5's setting, can adjust the rate of tension of stretch cord subassembly 4, can adjust stretch cord subassembly 4 to the resistance of footboard 2 to the user of being convenient for adjusts the movement resistance according to actual conditions.
The tension degree of the elastic rope component 4 can be measured through the arrangement of the first sensor 11, so that the resistance of the elastic rope component 4 to the pedal 2 can be calculated according to the measured tension degree of the elastic rope component 4, the times of reciprocating motion of the pedal 2 can be more accurately collected through the arrangement of the counting mechanism 7, and the steps of a user in motion can be calculated; in the application, the processor 8 can adopt a 51-series or 52-series single chip microcomputer in the prior art, the communication module 9 can adopt a wireless communication mode such as bluetooth and WiFi, the communication module 9 is wirelessly connected with the processor 8 and a mobile terminal equipped with APP, a user can send a command for adjusting the motion resistance to the processor 8 through the mobile terminal equipped with APP, the processor 8 receives the command and makes corresponding feedback, so that a plurality of different motion resistance gears are displayed on the mobile terminal for the user to select, after the user selects the corresponding gear, the processor 8 controls the driving mechanism 6 to drive the adjusting mechanism 5 to rotate, the adjusting mechanism 5 drives the elastic rope assembly 4 to stretch or contract, the first sensor 11 converts the detected signal into data and transmits the data to the processor 8 after detecting the tension degree of the elastic rope assembly 4 and enabling the resistance of the elastic rope assembly 4 to the pedal 2 to reach the gear selected by the user, the processor 8 controls the drive mechanism 6 to stop running, completing the adjustment of the resistance to movement of the present application.
Further, as shown in fig. 2 and 3, the bungee cord assembly 4 includes: adjustable elastic rope 41, base elastic rope 42, press block 43, first connecting block 44 and second connecting block 45; the first connecting block 44 is fixedly connected with the middle part of the adjustable elastic rope 41; the second connecting block 45 is fixedly connected with the foundation elastic rope 42; the first connecting block 44 and the second connecting block 45 are clamped with the pressing block 43; the pressing block 43 is fixedly connected with the pedal 2 and the sliding rail mechanism 3 respectively; both ends of the adjustable elastic rope 41 are fixedly connected with the adjusting mechanism 5; both ends of the foundation elastic rope 42 are fixedly connected with the shell 1; both base bungee cord 42 and adjustable bungee cord 41 may be made of rubber in the present application, and in other embodiments may be made of other resilient materials known in the art.
Specifically, the housing 1 includes: an upper shell, a lower shell and a fixing plate; the lower shell is connected with the upper shell in a clamping way; the fixed plate is clamped with the inner surface of the lower shell; the sliding hole is arranged on the upper shell; the slide rail mechanism 3, the adjusting mechanism 5 and the driving mechanism 6 are all arranged on one side of the fixing plate close to the upper shell; a first fixing bracket and a second fixing bracket are arranged on the fixing plate; one end of the foundation elastic rope 42 is fixedly connected with the first fixed bracket, and the other end is fixedly connected with the second fixed bracket; the number of the first fixing supports and the number of the second fixing supports are two; the two first fixing brackets are correspondingly connected with the two base elastic ropes 42 one by one; the two second fixing brackets are correspondingly connected with the two base elastic ropes 42 one by one; through the arrangement of the basic elastic rope 42, the elastic rope component 4 can be ensured to have certain resistance to the pedal 2, and the body-building effect of a user is ensured; through the arrangement of the adjustable elastic rope 41, the adjusting mechanism 5 stretches or contracts the elastic rope, so that the resistance of the elastic rope component 4 to the pedal 2 can be adjusted; through the setting of first connecting block 44 and second connecting block 45, after the motion, first connecting block 44 can drive the middle part of basic stretch cord 42 and get back to the middle part of slide rail mechanism 3, and second connecting block 45 can drive the middle part of adjustable stretch cord 41 and get back to the middle part of slide rail mechanism 3 to drive briquetting 43 and also be located the middle part of slide rail mechanism 3, make footboard 2 be located the middle part of casing 1.
Further, as shown in fig. 4, the adjusting mechanism 5 includes: the double-end screw rod 51, the polished rod 52, the first slide block 53, the second slide block 54, the first gear 55 and the second gear 56; the double-end screw rod 51 is rotationally connected with the shell 1; the polish rod 52 is fixedly connected with the shell 1; one end of the double-end screw rod 51 is in threaded connection with the first sliding block 53, and the other end of the double-end screw rod is in threaded connection with the second sliding block 54; the first gear 55 is fixedly connected with the middle part of the double-end screw rod 51; the second gear 56 is in meshed connection with the first gear 55; the second gear 56 is fixedly connected with the driving mechanism 6; one end of the adjustable elastic rope 41 is fixedly connected with the first sliding block 53, and the other end is fixedly connected with the second sliding block 54.
In the present application, the double-threaded screw rod 51 is a screw rod with two threaded sections at two ends, and the thread turning directions of the threaded sections at the two ends are opposite; the polish rod 52 is a smooth rod body; the first slider 53 is in threaded connection with one of the threaded sections, and the second slider 54 is in threaded connection with the other threaded section; under the condition that the driving mechanism 6 drives the second gear 56 to rotate, the second gear 56 drives the first gear 55 to rotate; the first gear 55 drives the double-end screw rod 51 to rotate, the double-end screw rod 51 drives the first sliding block 53 and the second sliding block 54 to approach or separate from each other, the first sliding block 53 and the second sliding block 54 slide on the polished rod 52, and the first sliding block 53 and the second sliding block 54 drive the adjustable elastic rope 41 to stretch or contract under the condition of approaching or separating from each other, so that the tension of the adjustable elastic rope 41 is adjusted, and the resistance of the elastic rope assembly 4 to the pedal 2 is adjusted.
Further, as shown in fig. 3, the slide rail mechanism 3 includes: the device comprises a track 31, a sliding block 32, a first group of pulleys 33 for limiting, a second group of pulleys 34 for bearing and a third group of pulleys 35 for bearing; the track 31 is fixedly connected with the fixing plate; the track 31 is provided with a first sliding chute, a second sliding chute and a third sliding chute; the first group of pulleys 33 is in sliding connection with the first sliding chute; the second group of pulleys 34 is in sliding connection with the second chute; the third group of pulleys 35 is in sliding connection with the third sliding chute; the first group of pulleys 33, the second group of pulleys 34 and the third group of pulleys 35 are all rotationally connected with the sliding block 32; the slide block 32 is fixedly connected with the counting mechanism 7.
Specifically, the first sliding chute is arranged at the top end of the track 31, the second sliding chute is arranged at one side of the track 31, and the third sliding chute is arranged at the other side of the track 31; through the setting of second group pulley 34 and third group pulley 35, mainly played the bearing effect for slider 32 can be more stable slide on track 31, through the setting of first group pulley 33, first group pulley 33 has played limiting displacement to slider 32, prevents that slider 32 from taking place to control the skew at the slip in-process, has further improved the stability of slider 32 in the slip in-process.
Optionally, the method further includes: a first positioning bracket and a second positioning bracket; the first positioning bracket and the second positioning bracket are fixedly connected with the fixing plate; the first positioning bracket is provided with a first through hole; a second through hole is formed in the second positioning support; one end of the base elastic rope 42 passes through the first through hole, and the other end passes through the second through hole; one end of the adjustable elastic rope 41 passes through the first through hole, and the other end of the adjustable elastic rope passes through the second through hole; the foundation elastic rope 42 is respectively abutted against one side of the first positioning bracket and one side of the second positioning bracket; the adjustable elastic rope 41 is respectively connected with the other side of the first positioning bracket and the other side of the second positioning bracket in an abutting mode.
In the application, the number of the first positioning supports and the number of the second positioning supports are two, the two basic elastic ropes 42 are respectively connected with the two first positioning supports and the two second positioning supports in a one-to-one correspondence manner, and the two adjustable elastic ropes 41 are respectively connected with the two first positioning supports and the two second positioning supports in a one-to-one correspondence manner; through the setting of first locating support and second locating support, guaranteed the stability of basis stretch cord 42 and adjustable stretch cord 41 for basis stretch cord 42 and adjustable stretch cord 41 are all parallel with track 31, and under the condition that adjustment mechanism 5 adjusted adjustable stretch cord 41's rate of tension, guaranteed adjustable stretch cord 41 and track 31's parallel state, the slider 32 of being convenient for slides on track 31.
Further, as shown in fig. 4, the driving mechanism 6 includes: a motor 61, a steering box 62, a rotating shaft and an encoder; the motor 61 is fixedly connected with the shell 1; the output end of the motor 61 is fixedly connected with the input end of the steering box 62; the rotating shaft is fixedly connected with the output end of the steering box 62; the encoder and the second gear 56 are both fixedly connected with the rotating shaft; the motor 61 and the encoder are both electrically connected to the processor 8.
Specifically, when the motor 61 is started, the motor 61 drives the steering box 62 to rotate, the steering box 62 drives the rotating shaft to rotate, and the rotating shaft drives the encoder and the second gear 56 to rotate, so that the adjustable mechanism is driven; through the arrangement of the encoder and the first sensor 11, the first sensor 11 is a photoelectric sensor, the first sensor 11 can detect the number of turns and the rotation angle of the encoder to obtain the number of turns and the rotation angle of the rotating shaft and the second gear 56, thereby obtaining the rotation turns and the rotation angle of the first gear 55 and the double-head screw rod 51, converting the rotation turns and the rotation angle of the double-head screw rod 51 into the displacement of the first slide block 53 and the displacement of the second slide block 54, adding the displacement of the first slide block 53 and the displacement of the second slide block 54 to obtain the total displacement of the movement of the first slide block 53 and the second slide block 54, thereby obtaining the stretching length or the shrinking length of the adjustable elastic rope 41, thereby obtaining the tension degree of the adjustable elastic rope 41, the movement resistance of the bungee cord assembly 4 to the pedal 2 can be derived from the tension of the adjustable bungee cords 41 and the tension of the base bungee cords 42.
Further, as shown in fig. 4, the method further includes: a second sensor 12 for detecting the reset state of the adjustable elastic cord 41 and a third sensor 13 for detecting the maximum tension of the adjustable elastic cord 41; the second sensor 12 and the third sensor 13 are both arranged on the fixing plate; the second sensor 12 and the third sensor 13 are both electrically connected to the processor 8.
The second sensor 12 and the third sensor 13 are both photosensors in the present application; under the condition that the first slider 53 is close to the end part of one end of the double-end screw rod 51 and the second slider 54 is close to the end part of the other end of the double-end screw rod 51, the adjustable elastic rope 41 is in an initial state, the second slider 54 just blocks the second sensor 12 from receiving the light beam emitted by the second sensor, so that the second sensor 12 detects that the adjustable elastic rope 41 is in the initial state, after the user movement is finished, if the second sensor 12 detects the light beam emitted by the second sensor, the processor 8 controls the motor 61 to rotate, so as to drive the second slider 54 to move towards the second sensor 12, after the second slider 54 moves to just block the second sensor 12 from receiving the light beam emitted by the second sensor, the second sensor 12 converts the signal into data and transmits the data to the processor 8, and the processor 8 controls the motor 61 to stop rotating, so that the reset of the adjustable elastic rope.
Under the condition that the first sliding block 53 and the second sliding block 54 are both close to the middle part of the double-end screw rod 51, the adjustable elastic rope 41 is in the state of the maximum tension degree, the second sliding block 54 just blocks the third sensor 13 from receiving the light beam emitted by the third sensor, so that the third sensor 13 detects that the adjustable elastic rope 41 is in the state of the maximum tension degree, under the condition that the tension degree of the adjustable elastic rope 41 is adjusted, after the second sliding block 54 moves to just block the third sensor 13 from receiving the light beam emitted by the third sensor, the third sensor 13 converts the signal into data and transmits the data to the processor 8, the processor 8 controls the motor 61 to stop rotating, the damage to the adjustable elastic rope 41 is prevented, the protection to the adjustable elastic rope 41 is enhanced, and the normal use of the adjustable elastic rope 41 is ensured.
Further, as shown in fig. 4, the counting mechanism 7 includes: a first magnet 71, a second magnet 72, and a hall sensor 73; the first magnet 71 and the second magnet 72 are both fixedly connected with the slide block 32; the first magnet 71 and the second magnet 72 are oppositely arranged; the Hall sensor 73 is fixedly connected with the fixed plate; the hall sensor 73 is electrically connected to the processor 8.
Specifically, under the condition that the slider 32 slides on the track 31, the slider 32 drives the first magnet 71 and the second magnet 72 to slide, the first magnet 71 and the second magnet 72 pass through a magnetic field generated by the hall sensor 73 in the sliding process, and the number of times of the slider 32 is measured back and forth through the arrangement of the first magnet 71, the second magnet 72 and the hall sensor 73, so that the number of steps of the user in the movement is obtained.
Optionally, the two ends of the rail 31 are provided with silica gel blocks for protecting the housing 1 and preventing the slider 32 from impacting the housing 1 in the sliding process on the rail 31; the bottom at the inferior valve is provided with the silica gel strip for strengthen the frictional force on epitheca and ground, prevent that the user from producing the displacement at the in-process this application of motion, improved the stability of this application.
Optionally, as shown in fig. 5, a battery is further included, the battery is disposed on the lower case, and the battery is electrically connected to the processor 8; through the arrangement of the battery, the battery charger is convenient to use in places inconvenient to charge, and has stronger practicability; still be provided with the display screen on the epitheca, the display screen is connected with treater 8 electricity, through the setting of display screen, can show the motion gear that the user selected, user's motion step number, data such as calorie that the user consumed in the motion, and the user of being convenient for can in time know the motion condition of self.
The leg exercise device with adjustable exercise resistance and the calorie calculation method thereof can adjust the tension degree of the elastic rope component 4 and adjust the resistance of the elastic rope component 4 to the pedal 2, thereby facilitating the adjustment of the exercise resistance by a user according to the actual situation; through the arrangement of the first sensor 11 and the encoder, the tension degree of the adjustable elastic rope 41 can be accurately calculated, so that the movement resistance of the elastic rope component 4 to the sliding block 32 is obtained, and a user can conveniently select a proper gear; the arrangement of the second group of pulleys 34 and the third group of pulleys 35 mainly plays a role in bearing, and the arrangement of the first group of pulleys 33 enables the first group of pulleys 33 to play a role in limiting the sliding block 32, so that the stability of the sliding block 32 in the sliding process is further improved; through the arrangement of the second sensor 12 and the third sensor 13, the resetting of the adjustable elastic rope 41 can be realized, the protection of the adjustable elastic rope 41 is enhanced, and the service life of the adjustable elastic rope 41 is prolonged.
The invention also provides a calorie calculation method of the fitness equipment based on the adjustable exercise resistance, as shown in fig. 6, the method comprises the following steps:
s100, acquiring the gender, the weight and the addition coefficient of a locomotor of a user; the gender and the weight of the user are determined according to the gender and the weight input by the user through a mobile terminal provided with the APP, and the gender and the weight of the user are transmitted to the processor 8 through the communication module 9 by the mobile terminal; the addition coefficient of the exerciser can be preset in the processor 8, the addition coefficient of the exerciser is determined by the step counting principle of the exerciser, if the exerciser is used for one step, the slider 32 drives the first magnet 71 and the second magnet 72 to pass through the Hall sensor 73, so that four level changes are generated, the addition coefficient of the exerciser is 4, and the addition coefficient of the exerciser can be finely adjusted according to the actual test result, so that the calorie consumption calculated by the calculation method is closer to the real data of each user.
S200, calculating the basic calorie consumed by the user at each step in the movement according to the gender, the weight and the addition coefficient of the exerciser of the user; after the processor 8 receives the user gender data and the user weight data sent by the mobile terminal, a preset exercise machine addition coefficient is called, and basic calories consumed by each step of exercise of the user by using the exercise machine are calculated.
S300, acquiring the tension of the elastic rope component 4, the number of steps of the user movement and a step number correction coefficient generated by the processor 8 after the user movement is finished according to the movement state of the user; the tightness of the adjustable elastic rope 41 can be obtained through the first sensor 11, the tightness of the foundation elastic rope 42 is fixed, the tightness of the elastic rope component 4 can be obtained according to the tightness of the adjustable elastic rope 41 and the tightness of the foundation elastic rope 42, and the number of steps of the user in the movement can be obtained after the user finishes the movement each time through the measurement of the Hall sensor 73; since the user status is not exactly the same during each exercise, a step number correction factor is generated after the exercise is finished, and the range of the step number correction factor is 0.98-1.05.
S400, calculating the total calorie consumed by the user in the movement according to the tension of the elastic rope component 4, the user movement step number and the step number correction coefficient; the motion resistance of the elastic rope component 4 to the sliding block 32 can be calculated through the tensity of the elastic rope component 4, so that the motion resistance of a user in the motion process can be obtained, the application is convenient to set a plurality of motion resistance gears according to different motion resistances generated by different tensities of the elastic rope component 4, and if 10 motion resistance gears can be set, a selection interface of the 10 motion resistance gears can be displayed on a mobile terminal for the user to select; after the processor 8 calculates the total calories consumed by the user during the exercise, the total calories consumed by the user during the exercise can be transmitted to the mobile terminal through the communication module 9, so that the user can know the exercise condition of the user through the mobile terminal.
Further, the user consumes a base calorie R per step in the exercise1The calculation formula of (2) is as follows:
R1=n1×n2×n3×n4wherein n is1Is the addition coefficient of the locomotor; n is2Standard calorie consumption for a user to step through each step of the exercise; n is3Is a gender coefficient; n is4The user weight coefficient is obtained according to a user gender weight lookup table; in the present application n1Is 4; n is2The standard calorie consumption of each step of movement of walking is 0.01 for men and 0.0115 for women; in the case where the user is male, n3Is 1, in the case that the user is female, n3Is 0.75; the user inputs gender through the mobile terminal, the communication module 9 transmits the gender data of the user to the processor, and the processor 8 determines n according to the gender input by the user2And n3A value of (d); weight factor n for users of different sexes and different weights4As shown in the following table:
Figure BDA0002979827610000141
Figure BDA0002979827610000151
further, the total calories R consumed by the user in the sport2Is calculated byThe formula is as follows:
R2=R1×n5×n6×n7wherein n is5The ratio of the motion resistance generated by the tensity of the elastic rope component 4 to the motion resistance of walking with vigorous strides; n is6The number of steps of the user's exercise; n is7Correcting the coefficient for the number of steps; obtain the movement resistance of stretch cord subassembly 4 according to the rate of tension of stretch cord subassembly 4 in this application, be provided with the condition of 10 movement resistance gears according to the movement resistance of stretch cord subassembly 4, every movement resistance gear all corresponds the ratio of the movement resistance under this gear and the movement resistance of walking healthy step, and the relation of the movement resistance under motion resistance gear and this gear and the ratio of the movement resistance of walking healthy step is shown as following table in this application:
Figure BDA0002979827610000152
in practical application, after the user selects the corresponding gear, the processor 8 can directly adjust n according to the gear of the movement resistance and the relation between the ratio of the movement resistance in the gear and the movement resistance of walking with vigorous strides5The calculation speed is accelerated, the movement resistance generated by the elastic rope component 4 is the same as the movement resistance generated by walking under the condition that the movement resistance gear selected by the user is 5, basic calories consumed when the user uses the exerciser to move for one step under the movement resistance gear of 5 are calculated firstly through the calculation method, and after the movement is finished, the total calories consumed in the whole movement process of the user are obtained by combining the movement resistance gear actually selected by the user, the movement step number of the user and the step number correction coefficient.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. An exercise resistance adjustable leg exerciser, comprising: the device comprises a shell, a pedal, a sliding rail mechanism, an elastic rope assembly, an adjusting mechanism, a driving mechanism, a first sensor, a counting mechanism, a processor and a communication module, wherein the elastic rope assembly is used for providing motion resistance for a user, the adjusting mechanism is used for adjusting the tension degree of the elastic rope assembly, the driving mechanism is used for driving the adjusting mechanism to rotate, the first sensor is used for measuring the tension degree of the elastic rope assembly, the counting mechanism is used for collecting the number of steps of the user in motion, the processor is used for receiving data collected by the first sensor and the counting mechanism and processing the data, and the communication module is used for realizing data transmission of the processor and; the sliding rail mechanism, the first sensor, the counting mechanism, the processor and the communication module are all arranged in the shell; the elastic rope assembly is respectively and fixedly connected with the sliding rail mechanism and the adjusting mechanism; the driving mechanism is fixedly connected with the adjusting mechanism; the pedal is fixedly connected with the elastic rope component; the counting mechanism is fixedly connected with the sliding rail mechanism; the driving mechanism, the first sensor, the counting mechanism and the communication module are electrically connected with the processor.
2. The adjustable resistance-to-exercise leg exercise apparatus of claim 1, wherein the bungee cord assembly comprises: the adjustable elastic rope, the foundation elastic rope, the pressing block, the first connecting block and the second connecting block; the first connecting block is fixedly connected with the middle part of the adjustable elastic rope; the second connecting block is fixedly connected with the foundation elastic rope; the first connecting block and the second connecting block are clamped with the pressing block; the pressing block is fixedly connected with the pedal and the sliding rail mechanism respectively; both ends of the adjustable elastic rope are fixedly connected with the adjusting mechanism; both ends of the basic elastic rope are fixedly connected with the shell.
3. The adjustable-resistance-to-exercise leg exerciser of claim 2, wherein the adjustment mechanism comprises: the double-end screw rod, the polished rod, the first sliding block, the second sliding block, the first gear and the second gear; the double-end screw rod is rotationally connected with the shell; the polished rod is fixedly connected with the shell; one end of the double-end screw rod is in threaded connection with the first sliding block, and the other end of the double-end screw rod is in threaded connection with the second sliding block; the first gear is fixedly connected with the middle part of the double-end screw rod; the second gear is in meshed connection with the first gear; the second gear is fixedly connected with the driving mechanism; one end of the adjustable elastic rope is fixedly connected with the first sliding block, and the other end of the adjustable elastic rope is fixedly connected with the second sliding block.
4. The leg exercise device with adjustable exercise resistance according to claim 1, wherein the slide rail mechanism comprises: the device comprises a rail, a sliding block, a first group of pulleys for limiting, a second group of pulleys for bearing and a third group of pulleys for bearing; the track is fixedly connected with the shell; a first sliding chute, a second sliding chute and a third sliding chute are arranged on the track; the first group of pulleys are connected with the first sliding chute in a sliding manner; the second group of pulleys is in sliding connection with the second sliding chute; the third group of pulleys is in sliding connection with the third sliding chute; the first group of pulleys, the second group of pulleys and the third group of pulleys are all rotationally connected with the sliding block; the sliding block is fixedly connected with the counting mechanism.
5. The adjustable-resistance-to-exercise leg exerciser of claim 1, wherein the drive mechanism includes: the device comprises a motor, a steering box, a rotating shaft and an encoder; the motor is fixedly connected with the shell; the output end of the motor is fixedly connected with the input end of the steering box; the rotating shaft is fixedly connected with the output end of the steering box; the encoder and the second gear are both fixedly connected with the rotating shaft; the motor and the encoder are both electrically connected with the processor.
6. The leg exercise device with adjustable exercise resistance according to claim 1, further comprising: the second sensor is used for detecting the reset state of the elastic rope component and the third sensor is used for detecting the maximum tension degree of the elastic rope component; the second sensor and the third sensor are both arranged on the shell; the second sensor and the third sensor are both electrically connected with the processor.
7. The adjustable-resistance-to-exercise leg exerciser of claim 1, wherein the counter mechanism comprises: a first magnet, a second magnet and a hall sensor; the first magnet and the second magnet are both fixedly connected with the sliding rail mechanism; the Hall sensor is fixedly connected with the shell; the Hall sensor is electrically connected with the processor.
8. A calorie calculation method for an exercise resistance-adjustable leg exercise machine according to any one of claims 1 to 7, comprising:
acquiring the gender, the weight and the addition coefficient of a locomotor of a user;
calculating the basic calorie consumed by the user at each step in the movement according to the user gender, the user weight and the addition coefficient of the exerciser;
acquiring the tension degree of the elastic rope assembly, the user movement step number and a step number correction coefficient generated by the processor after the user movement is finished according to the movement state of the user;
and calculating the total calorie consumed by the user in the movement according to the tension of the elastic rope component, the step number of the user in the movement and the step number correction coefficient.
9. The exercise resistance adjustable leg exerciser of claim 8, wherein the user consumes a base calorie R per step in the exercise1The calculation formula of (2) is as follows:
R1=n1×n2×n3×n4wherein n is1Is the addition coefficient of the locomotor; n is2Standard calorie consumption for a user's walking exercise; n is3Is a gender coefficient; n is4The user weight coefficient is obtained according to a user gender weight lookup table.
10. The leg exercise apparatus with adjustable exercise resistance according to claim 9, wherein the leg exercise apparatus is characterized in thatTotal calories R consumed by the user in the sport2The calculation formula of (2) is as follows:
R2=R1×n5×n6×n7wherein n is5The ratio of the motion resistance generated by the tensity of the elastic rope component to the motion resistance of walking with vigorous strides; n is6The number of steps of the user's exercise; n is7The step number correction coefficient.
CN202110284366.6A 2021-03-17 2021-03-17 Leg exercise device with adjustable exercise resistance and calorie calculation method thereof Pending CN113058199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110284366.6A CN113058199A (en) 2021-03-17 2021-03-17 Leg exercise device with adjustable exercise resistance and calorie calculation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110284366.6A CN113058199A (en) 2021-03-17 2021-03-17 Leg exercise device with adjustable exercise resistance and calorie calculation method thereof

Publications (1)

Publication Number Publication Date
CN113058199A true CN113058199A (en) 2021-07-02

Family

ID=76560848

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110284366.6A Pending CN113058199A (en) 2021-03-17 2021-03-17 Leg exercise device with adjustable exercise resistance and calorie calculation method thereof

Country Status (1)

Country Link
CN (1) CN113058199A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753706A (en) * 2003-02-28 2006-03-29 鹦鹉螺公司 System and method for controlling an exercise apparatus
CN201186129Y (en) * 2008-04-14 2009-01-28 邓如娟 Training apparatus for hand
TWM394160U (en) * 2010-05-31 2010-12-11 Twinsonic Entpr Co Ltd Structure of push/pull body-building equipment with function of adjustable tension
CN201760036U (en) * 2010-04-06 2011-03-16 朱振纲 Leg stretching exerciser capable of adjusting resistance
TWM530660U (en) * 2016-05-09 2016-10-21 岱宇國際股份有限公司 Pedal assembly
CN206414673U (en) * 2016-08-31 2017-08-18 大连酒游科技有限公司 A kind of outdoor body-building machine for walking
CN108211300A (en) * 2016-12-22 2018-06-29 宜强科技股份有限公司 Swimming instruction system and its swimming method for computing data, swimming instruction method
CN109893827A (en) * 2019-04-26 2019-06-18 张帅 A kind of skiing simulating machine and its application method with safety protection function
CN112494881A (en) * 2020-11-05 2021-03-16 广州三拾七度智能家居有限公司 Fitness equipment capable of adjusting exercise resistance and calorie calculation method thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753706A (en) * 2003-02-28 2006-03-29 鹦鹉螺公司 System and method for controlling an exercise apparatus
CN201186129Y (en) * 2008-04-14 2009-01-28 邓如娟 Training apparatus for hand
CN201760036U (en) * 2010-04-06 2011-03-16 朱振纲 Leg stretching exerciser capable of adjusting resistance
TWM394160U (en) * 2010-05-31 2010-12-11 Twinsonic Entpr Co Ltd Structure of push/pull body-building equipment with function of adjustable tension
TWM530660U (en) * 2016-05-09 2016-10-21 岱宇國際股份有限公司 Pedal assembly
CN206414673U (en) * 2016-08-31 2017-08-18 大连酒游科技有限公司 A kind of outdoor body-building machine for walking
CN108211300A (en) * 2016-12-22 2018-06-29 宜强科技股份有限公司 Swimming instruction system and its swimming method for computing data, swimming instruction method
CN109893827A (en) * 2019-04-26 2019-06-18 张帅 A kind of skiing simulating machine and its application method with safety protection function
CN112494881A (en) * 2020-11-05 2021-03-16 广州三拾七度智能家居有限公司 Fitness equipment capable of adjusting exercise resistance and calorie calculation method thereof

Similar Documents

Publication Publication Date Title
US7967730B2 (en) System and method for controlling an exercise apparatus
US3767195A (en) Programmed bicycle exerciser
TWI579019B (en) Adjustable stride length in an exercise machine
US7731635B2 (en) Cross training exercise device
US5314390A (en) Linear tracking programmable exerciser
US5178593A (en) Combination stationary recumbent exercise apparatus and upper body exerciser
US8083651B2 (en) Exercise apparatus
EP1666103B1 (en) Total body elliptical exercise equipment with upper body monitoring
US20090036273A1 (en) Exercise machine including weight measurement system
WO2014144827A1 (en) Devices and methods for determining the weight of a treadmill user
US20060281604A1 (en) Cross training exercise device
US20010027150A1 (en) Flexion extension exerciser
WO2009014330A1 (en) A weight training treadmill and its controlling method
WO2004078270A2 (en) System and method for controlling an exercise apparatus
US11065501B2 (en) Single-arm workout body conditioning machine
CN113058199A (en) Leg exercise device with adjustable exercise resistance and calorie calculation method thereof
CN112494881B (en) Fitness equipment capable of adjusting exercise resistance and calorie calculation method thereof
CN109247930B (en) System comprising step tester and use method
KR20200022860A (en) Squat exercise device
CN206549071U (en) A kind of novel fitness device
US20070270286A1 (en) Exercise apparatus such as a treadmill
US4943050A (en) One leg exerciser
TWM614584U (en) Fitness equipment riding posture measurement display system
CN214074866U (en) Knob type adjustable counterweight device
CN217612738U (en) Novel wind resistance bicycle with adjustable resistance

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210702

RJ01 Rejection of invention patent application after publication