CN113908494B - Intelligent leg swing device - Google Patents
Intelligent leg swing device Download PDFInfo
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- CN113908494B CN113908494B CN202111416772.XA CN202111416772A CN113908494B CN 113908494 B CN113908494 B CN 113908494B CN 202111416772 A CN202111416772 A CN 202111416772A CN 113908494 B CN113908494 B CN 113908494B
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- frequency modulation
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- swing
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
- A63B23/0482—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the hip joints
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
- A63B2071/0625—Emitting sound, noise or music
- A63B2071/063—Spoken or verbal instructions
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/20—Distances or displacements
- A63B2220/24—Angular displacement
Abstract
The invention relates to an intelligent leg swing device, belonging to the technical field of new energy and sports equipment; the device mainly comprises a portal frame, a cantilever shaft, a swing arm, a pedal, a force adjusting spring, an energy harvesting unit and a measuring and reporting unit, wherein the measuring and reporting unit comprises an energy conversion and storage circuit, a sensor, a counter, a timer and a broadcasting system; the energy harvesting unit comprises a rack, a wheel shaft, a swinging disc, a magnet, a coil, a frequency modulation block, a frequency modulation spring, a movable shifting piece, a fixed shifting piece and a turntable; the upper end of the swing arm is arranged on a vertical arm of the portal frame through a cantilever shaft, the lower end of the swing arm is connected with a seat plate of the portal frame through a force adjusting spring, the lower end of the swing arm is provided with a pedal, the swing arm can rotate around the cantilever shaft, and the pedal can rotate around the swing arm or is fixedly arranged with the swing arm; the leg swinging force is adjusted by changing the position of the force adjusting spring on the portal frame, the energy capturing unit and the measuring and reporting unit are arranged on the swing arm, a coil in the energy capturing unit cuts magnetic lines to generate electricity and supplies the electricity to the measuring and reporting unit, and the measuring and reporting unit obtains and reports leg swinging frequency, leg swinging angle and movement time information.
Description
Technical Field
The invention belongs to the field of new energy and fitness equipment, and particularly relates to an intelligent leg swing device which comprises self-powered sensing monitoring and voice broadcasting functions.
Background
In 2025, the national fitness public service system is more perfect, the physical training of people is more convenient, the fitness enthusiasm is further improved, the number of people participating in each sports item is continuously increased, the proportion of the number of people frequently participating in the physical training reaches 38.5%, and the full coverage of county (city, district), village (street), administrative village (community) three-level public fitness facilities and community fitness circles for 15 minutes is realized. To achieve this goal, new types of exercise equipment with various functions must be developed.
The leg swing device has the characteristics of simple structure, convenient use, suitability for all ages and the like, and becomes an apparatus which is not available or deficient in the community fitness activities at present. However, the existing kickers have single function, cannot monitor or adjust the exercise intensity, speed, time and the like, and cannot fully arouse the enthusiasm of people for body building. Therefore, there is a need to develop an intelligent leg swing device, which combines entertainment and fitness to realize automatic acquisition and broadcast of leg swing amplitude, frequency, time, etc.
Disclosure of Invention
Aiming at the problems of the existing contact-separation type wave-activated generator, an intelligent leg swing device is provided, which mainly comprises a portal frame, a cantilever shaft, a swing arm, a pedal, a force adjusting spring, an energy harvesting unit and a measuring and reporting unit; the upper end of the swing arm is arranged on a vertical arm of the portal frame through a cantilever shaft, the lower end of the swing arm is connected with a seat plate of the portal frame through a force adjusting spring, the lower end of the swing arm is provided with a pedal, the swing arm can rotate around the cantilever shaft, the pedal can rotate around the swing arm or is fixedly arranged with the swing arm, and the leg swinging force is adjusted by changing the position of the force adjusting spring on the portal frame; the energy capturing unit and the measuring and reporting unit are installed on the swing arm, and the measuring and reporting unit and the energy capturing unit are integrated.
The measuring and reporting unit comprises an energy conversion and storage circuit, a sensor, a counter, a timer, a broadcasting system and the like, wherein the sensor is a speed acceleration sensor and an angle sensor.
The energy harvesting unit comprises a rack, an end cover, a wheel shaft, a swinging disc, a magnet, a coil, a frequency modulation block, a frequency modulation spring, a flat key, a movable shifting piece, a fixed shifting piece and a rotating disc, wherein the rocker arm, the frequency modulation block and the frequency modulation spring form an exciter.
The rack is formed by installing two drums on the seat board through two vertical plates, and the bottoms of the two drums are oppositely installed; the end cover is arranged at the end part of the barrel wall of the barrel through screws, shaft holes are formed in the centers of the end cover and the barrel bottom, coils are uniformly distributed on the end cover and the barrel bottom, and the coils are embedded in coil cavities on the end cover and the barrel bottom; the circular truncated cones at the outer sides of the two barrel bottoms are uniformly distributed with fixed grooves, the fixed grooves are uniformly distributed along the circumferential direction and are parallel to the axis of the barrel, the heights of the groove walls at the two sides of the fixed grooves are different, the high groove wall is far higher than the low groove wall, the plane where the low groove wall is passes through the axis of the barrel, the fixed grooves on the two barrel bottoms are equal in number and are in asymmetric configuration, and the asymmetric configuration of the fixed grooves on the two barrel bottoms means that the high groove wall on one barrel bottom is overlapped with the low groove wall on the other barrel bottom when the fixed grooves on the two barrel bottoms are projected on the same axial section; the fixed groove is embedded with a fixed shifting piece.
The shaft comprises mutually perpendicular and coaxial pivot and rim plate, and the one end of pivot is equipped with the keyway, and the equipartition has magnet on the rim plate, and magnet is arranged in the magnet chamber on the rim plate, and magnet is the same respectively with shape, size and the quantity of coil.
The outer edge of a swinging plate body of the swinging plate is provided with a rocker arm, two sides of the swinging plate body are provided with swinging plate sinking cavities communicated through a swinging plate shaft hole, moving grooves are uniformly distributed on the cavity wall of each swinging plate sinking cavity, the moving grooves are parallel to the axis of the swinging plate body, the heights of two groove walls of the moving grooves are different, the high groove wall is far higher than the low groove wall, and the plane where the low groove wall is located passes through the axis of the swinging plate body; the movable grooves on two sides of the swinging plate body are asymmetrically arranged, and the asymmetric arrangement of the movable grooves on two sides of the swinging plate body means that when the movable grooves are projected on the same axial section, a high groove wall on one side of the swinging plate body is overlapped with a low groove wall on the other side of the swinging plate body; the movable shifting pieces are embedded in the movable groove, and the number of the movable shifting pieces is equal to that of the fixed shifting pieces.
The center of the rotary table is provided with a rotary table hole with a key groove, the outer edge of the rotary table is uniformly provided with inclined teeth, each inclined tooth consists of a flat tooth surface and an inclined tooth surface, the plane where the flat tooth surface is located passes through the center of the rotary table, and the tooth sharp angle between the flat tooth surface and the inclined tooth surface is an acute angle; the flat tooth surface and the oblique tooth surface of two adjacent oblique teeth on the circumference form a tooth gap.
Wheel shafts are arranged in the two drums, two ends of the rotating shaft are respectively arranged on the drum bottom and the end cover through bearings, inner rings of the bearings are sleeved on the rotating shaft, and outer rings of the bearings are arranged in shaft holes in the drum bottom and the end cover; one end of the rotating shaft with a key groove extends out of the shaft hole of the barrel bottom and then is sleeved with a swinging plate and a rotating plate, the rotating plate is positioned in a swinging plate sinking cavity, the swinging plate is sleeved on the rotating shaft through a swinging plate shaft hole in a hollow mode, and the swinging plate can rotate around the rotating shaft; the rotary table is fixedly arranged on the rotating shaft, and a rotary table hole of the rotary table is sleeved on the rotating shaft and is fixed through a flat key; the free ends of two axially adjacent movable shifting pieces and fixed shifting pieces on the same side of the swinging plate are inserted into the same tooth gap of the rotating plate; the rocker arm is provided with a frequency modulation block through a screw, the rocker arm is connected with two vertical plates of the rack through two frequency modulation springs, and the installation positions of the frequency modulation block and the frequency modulation springs on the rocker arm are adjustable; when the device does not work, the frequency modulation spring is vertical to the rocker arm, and the rocker arm is positioned in the vertical plane; the magnet and the coils on the left side and the right side of the magnet respectively form an electromagnetic energy capturing unit.
In the invention, the swinging disk, the frequency modulation block and the frequency modulation spring form an exciter, the inherent frequency of the exciter is determined by the structural dimensions and space position parameters of the swinging disk, the frequency modulation block and the frequency modulation spring, and the swinging angle generated by the swinging disk is the largest when the inherent frequency of the exciter is close to or equal to the swinging leg frequency; after other structures and parameters are determined, the natural frequency of the exciter is adjusted through the rigidity of the frequency modulation spring, the mass of the frequency modulation block and the installation positions of the frequency modulation block and the frequency modulation spring, and the natural frequency of the exciter is about
In the formula: zeta is damping ratio, k is rigidity of the frequency modulation spring, y is distance from the frequency modulation spring to the center of the wobble plate, m and x are distance from mass and mass center of the frequency modulation block to the center of the wobble plate respectively, m1 and m2 are mass of the wobble plate body and the rocker arm respectively, R and R are distance from outer edge of the wobble plate body and free end of the rocker arm to the center of the wobble plate respectively, and eta is correction coefficient.
In the invention, the swinging disc is made of light non-metallic materials, the mass of the swinging disc body and the rocker arm is far less than that of the frequency modulation block, the mass of the swinging disc is ignored, and the natural frequency of the exciter is simplified into
In the formula: zeta is damping ratio, k is rigidity of the frequency modulation spring, y is distance from the frequency modulation spring to the center of the wobble plate, m and x are distance from mass and mass center of the frequency modulation block to the center of the wobble plate respectively, and eta is correction coefficient.
During operation, the energy capturing unit and the measuring and reporting unit are packaged in the sealed shell and fixed on the swing arm, the swing disc swings back and forth under the action of the inertia force of the frequency modulation block and the elastic force of the frequency modulation spring when the swing arm swings, the swing disc drives the rotating disc to rotate in one direction through the movable shifting piece, and the fixed shifting piece is used for preventing the rotating disc from rotating in the reverse direction; the rotating directions of the rotating discs and the wheel discs on the two sides of the swinging disc are opposite, the rotating disc and the wheel disc on one side rotate clockwise, and the rotating disc and the wheel disc on the other side rotate anticlockwise; the exciter swings back and forth once, the two rotating discs rotate one step each, and the working process is shown in figures 2 to 6.
When the rocker arm swings far in fig. 2, the left movable shifting piece swings in the opposite tooth direction, namely the rocker arm swings left in fig. 4, two side faces of the movable shifting piece respectively abut against a high groove wall and a flat tooth surface, the cantilever of the movable shifting piece is short in length and does not bend and deform, the movable shifting piece pushes the left turntable to rotate clockwise by one step through the flat tooth surface, an inclined tooth surface abuts against one side of the fixed shifting piece, which is in contact with the high groove wall, the cantilever part of the fixed shifting piece is long and bends and deforms, and the fixed shifting piece slides over the inclined tooth surface and enters the next tooth gap; meanwhile, the right movable shifting piece swings along the tooth direction, namely the rocker arm swings to the right in the figure 5, the movable shifting piece bends and deforms towards the direction far away from the high groove wall and slides over the inclined tooth surface, and the movable shifting piece enters the next tooth gap from one tooth gap; because the two sides of the right fixed shifting piece are respectively propped against the flat tooth surface and the high groove wall, the cantilever of the right fixed shifting piece has short length and does not generate bending deformation, and the right rotary disc is prevented.
When the rocker arm swings to the near side in fig. 2, the left movable shifting piece swings along the tooth direction, namely the rocker arm swings to the right in fig. 4, the left movable shifting piece is separated from the high groove wall and abuts against the inclined tooth surface, the cantilever part of the movable shifting piece is long, slides over the contacted inclined tooth surface after bending deformation and enters the next tooth space, and the rotary disc on the left side keeps relatively static under the action of the left fixed shifting piece; meanwhile, the right side swing disc swings in the opposite tooth direction, namely the rocker arm swings leftwards in the figure 5, the movable shifting piece is abutted against the high groove wall and the flat tooth surface, the cantilever of the movable shifting piece is short in length and does not bend and deform, and the movable shifting piece pushes the right side turntable to rotate clockwise and in the opposite tooth direction by one step through the flat tooth surface.
In the process that the exciter drives the rotary disc and the wheel shaft to rotate in a stepping mode, the wheel shaft drives the magnet to rotate, the coil cuts magnetic lines of force and converts mechanical energy into electric energy, the electric energy is supplied to the measuring and reporting unit after conversion processing, and the measuring and reporting unit obtains information such as leg swinging frequency, leg swinging angle and movement time and carries out voice broadcasting; the forecast unit also has the function of playing music.
Advantages and features: the device has the functions of measuring the leg swing amplitude, frequency and movement time and broadcasting voice, is convenient for a body builder to adjust related movement parameters in real time, and organically combines entertainment with body building movement; the body building and power generation functions are combined, so that the energy self-sufficiency and maintenance-free power supply of the measuring and reporting unit are realized; the kinetic characteristics of the energy harvesting unit are adjusted according to the structural parameters so as to adapt to the use of people of different age groups.
Drawings
FIG. 1 is a schematic view of a kicker according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of an energy harvesting unit according to a preferred embodiment of the present invention;
FIG. 3 isbase:Sub>A view A-A of FIG. 2;
FIG. 4 is a view B-B of FIG. 2;
FIG. 5 is a view C-C of FIG. 2;
FIG. 6 is a D-D view of FIG. 2;
FIG. 7 is a schematic view of a frame structure according to a preferred embodiment of the present invention;
FIG. 8 is a view E-E and a view F-F of FIG. 7;
FIG. 9 is a schematic view of the construction of an axle in accordance with a preferred embodiment of the present invention;
FIG. 10 is a left side view of FIG. 9;
FIG. 11 is a schematic structural view of a wobble plate according to a preferred embodiment of the present invention;
FIG. 12 is a left and right side view of FIG. 11;
FIG. 13 is a schematic diagram of the structure of the turntable in accordance with a preferred embodiment of the present invention.
Detailed Description
An intelligent leg swing device mainly comprises a portal frame A, a cantilever shaft B, a swing arm C, a pedal D, a force adjusting spring E, an energy capturing unit G and a measuring and reporting unit F; the upper end of a swing arm C is arranged on a vertical arm of a portal frame A through a cantilever shaft B, the lower end of the swing arm C is connected with a seat plate of the portal frame A through a force adjusting spring E, the lower end of the swing arm C is provided with a pedal D, the swing arm C can rotate around the cantilever shaft B, the pedal D can rotate around the swing arm C or is fixedly arranged with the swing arm C, and the leg swinging force is adjusted by changing the position of the force adjusting spring E on the portal frame A; the energy capturing unit G and the measuring and reporting unit F are installed on the swing arm C, and the measuring and reporting unit F and the energy capturing unit G are integrated.
The measuring and reporting unit F comprises an energy conversion and storage circuit, a sensor, a counter, a timer, a broadcasting system and the like, wherein the sensor is a speed acceleration sensor and an angle sensor.
The energy capturing unit G comprises a rack a, an end cover b, a wheel shaft c, a swinging disc d, a magnet e, a coil f, a frequency modulation block h, a frequency modulation spring k, a flat key G, a movable shifting piece j, a fixed shifting piece i and a turntable n, and an exciter is formed by a swinging arm d2, the frequency modulation block h and the frequency modulation spring k.
The rack a is formed by mounting two drums a0 on a seat board a1 through two vertical plates a2, and the drum bottoms a4 of the two drums a0 are oppositely mounted; the end cover b is arranged at the end part of the barrel wall a3 of the barrel a0 through a screw, shaft holes are formed in the centers of the end cover b and the barrel bottom a4, coils f are uniformly distributed on the end cover b and the barrel bottom a4, and the coils f are embedded in coil cavities a5 on the end cover b and the barrel bottom a 4; the circular truncated cones a6 at the outer sides of the two barrel bottoms a4 are uniformly provided with fixed grooves a7, the fixed grooves a7 are uniformly distributed along the circumferential direction and are parallel to the axis of the barrel a0, the heights of the groove walls at the two sides of the fixed grooves a7 are different, the high groove wall is far higher than the low groove wall, the plane where the low groove wall is located passes through the axis of the barrel a0, the fixed grooves a7 on the two barrel bottoms a4 are equal in quantity and are in asymmetric configuration, and the asymmetric configuration of the fixed grooves a7 on the two barrel bottoms a4 means that the high groove wall on one barrel bottom a4 is overlapped with the low groove wall on the other barrel bottom a4 when the fixed grooves a7 are projected on the same axial section; the fixed groove a7 is embedded with a fixed shifting sheet i.
The wheel shaft c is composed of a rotating shaft c1 and a wheel disc c2 which are perpendicular to each other and coaxial, a key groove c3 is formed in one end of the rotating shaft c1, magnets e are evenly distributed on the wheel disc c2 and are arranged in a magnet cavity c4 in the wheel disc c2, and the magnets e and the coils f are the same in shape, size and number respectively.
The outer edge of a swinging disc body d1 of the swinging disc d is provided with a rocker arm d2, two sides of the swinging disc body d1 are provided with a swinging disc sinking cavity d5 communicated through a swinging disc shaft hole d3, the cavity wall of the swinging disc sinking cavity d5 is uniformly provided with moving grooves d4, the moving grooves d4 are parallel to the axis of the swinging disc body d1, the heights of two groove walls of the moving grooves d4 are different, the high groove wall is far higher than the low groove wall, and the plane where the low groove wall is located passes through the axis of the swinging disc body d 1; the movable grooves d4 on the two sides of the swinging disc body d1 are asymmetrically arranged, and the asymmetric arrangement of the movable grooves d4 on the two sides of the swinging disc body d1 means that when the swinging disc body d1 is projected on the same axial section, a high groove wall on one side of the swinging disc body d1 is overlapped with a low groove wall on the other side; and movable shifting pieces j are embedded in the movable groove d4, and the number of the movable shifting pieces j is equal to that of the fixed shifting pieces i.
A turntable hole n0 with a key groove n2 is formed in the center of the turntable n, oblique teeth n1 are uniformly distributed on the outer edge, each oblique tooth n1 is composed of a flat tooth surface n3 and an oblique tooth surface n4, the plane where the flat tooth surface n3 is located passes through the center of the turntable n, and a tooth sharp angle n5 between the flat tooth surface n3 and the oblique tooth surface n4 is an acute angle; the flat tooth flank n3 and the helical tooth flank n4 of two circumferentially adjacent helical teeth n1 form a tooth gap n6.
Wheel shafts c are arranged in the two drums a0, two ends of a rotating shaft c1 are respectively arranged on a drum bottom a4 and an end cover b through bearings, an inner ring of each bearing is sleeved on the rotating shaft c1, and an outer ring of each bearing is arranged in a shaft hole in the drum bottom a4 and the end cover b; one end of the rotating shaft c1 with the key groove c3 extends out of a shaft hole of the barrel bottom a4 and then is sleeved with a swinging disc d and a rotating disc n, the rotating disc n is positioned in a swinging disc sinking cavity d5, the swinging disc d is sleeved on the rotating shaft c1 through a swinging disc shaft hole d3 in an empty mode, and the swinging disc d can rotate around the rotating shaft c 1; the turntable n is fixedly arranged on the rotating shaft c1, and a turntable hole n0 of the turntable n is sleeved on the rotating shaft c1 and is fixed through a flat key g; the free ends of two axially adjacent movable shifting pieces j and fixed shifting pieces i on the same side of the swing disc d are inserted into the same tooth space n6 of the turntable n; a frequency modulation block h is arranged on the rocker arm d2 through a screw, the rocker arm d2 is connected with two vertical plates a2 of the rack a through two frequency modulation springs k, and the installation positions of the frequency modulation block h and the frequency modulation springs k on the rocker arm d2 are adjustable; when the device does not work, the frequency modulation spring k is vertical to the rocker arm d2, and the rocker arm d2 is positioned in the vertical plane; the magnet e and the coils f on the left side and the right side of the magnet e respectively form an electromagnetic energy harvesting unit.
In the invention, a swinging disk d, a frequency modulation block h and a frequency modulation spring k form an exciter, the inherent frequency of the exciter is determined by the structural dimensions and space position parameters of the swinging disk d, the frequency modulation block h and the frequency modulation spring k, and the swinging angle generated by the swinging disk d is maximum when the inherent frequency of the exciter is close to or equal to the swinging leg frequency; after other structures and parameters are determined, the inherent frequency of the exciter is adjusted through the rigidity of the frequency modulation spring k, the mass of the frequency modulation block h and the installation positions of the frequency modulation block h and the frequency modulation spring k, and the inherent frequency of the exciter is about
In the formula: zeta is damping ratio, k is rigidity of frequency-modulation spring k, y is distance from frequency-modulation spring k to center of wobble plate d, and m and x are respectivelyThe mass and the distance from the mass center of the frequency modulation block h to the center of the wobble plate d, m1 and m2 are the mass of the wobble plate body d1 and the mass of the rocker arm d2 respectively, R and R are the distance from the outer edge of the wobble plate body d1 and the free end of the rocker arm d2 to the center of the wobble plate d respectively, and eta is a correction coefficient.
In the invention, the wobble plate d is made of light non-metallic materials, the mass of the wobble plate body d1 and the rocker arm d2 is far less than that of the frequency modulation block h, the mass of the wobble plate d is ignored, and the natural frequency of the exciter is simplified into
In the formula: zeta is a damping ratio, k is the rigidity of the frequency modulation spring k, y is the distance from the frequency modulation spring k to the center of the swinging disc d, m and x are the mass of the frequency modulation block h and the distance from the mass center to the center of the swinging disc d respectively, and eta is a correction coefficient.
During work, the energy capturing unit G and the measuring and reporting unit F are packaged in a sealed shell and are fixed on the swing arm C, when the swing arm C swings, the swing disc d swings back and forth under the action of the inertia force of the frequency modulation block h and the elastic force of the frequency modulation spring k, the swing disc d drives the turntable n to rotate in a single direction through the movable shifting piece j, and the fixed shifting piece i is used for preventing the turntable n from rotating in the reverse direction; the rotating directions of the rotating discs n and the rotating discs c2 on the two sides of the swinging disc d are opposite, the rotating disc n and the rotating disc c2 on one side rotate clockwise, and the rotating disc n and the rotating disc c2 on the other side rotate anticlockwise; the exciter swings back and forth once, the two rotating discs n rotate one step each, and the working process is shown in fig. 2 to fig. 6.
When the rocker arm d2 swings far in fig. 2, the left movable shifting piece j swings in the opposite tooth direction, namely the rocker arm d2 swings left in fig. 4, two side faces of the movable shifting piece j abut against a high groove wall and a flat tooth surface n3 respectively, the cantilever of the movable shifting piece j is short in length and does not bend and deform, the movable shifting piece j pushes the left turntable n to rotate clockwise by one step through the flat tooth surface n3, the inclined tooth surface n4 abuts against one side of the fixed shifting piece i, which is in contact with the high groove wall, of the fixed shifting piece i is long in cantilever part and bends and deforms, and the fixed shifting piece i slides over the inclined tooth surface n4 and enters the next tooth space n 6; meanwhile, the right movable shifting piece j swings along the tooth direction, namely the rocker arm d2 swings rightwards in fig. 5, the movable shifting piece j bends and deforms in the direction away from the high groove wall and slides over the inclined tooth surface n4, and the movable shifting piece j enters the next tooth gap n6 from one tooth gap n 6; because the two sides of the right fixed shifting piece i are respectively propped against the flat tooth surface n3 and the high groove wall, the cantilever of the right fixed shifting piece i has short length and does not generate bending deformation, and further the right rotary disc n is prevented.
When the rocker arm d2 swings to the near side in fig. 2, the left movable shifting piece j swings along the tooth direction, namely the rocker arm d2 swings to the right in fig. 4, the left movable shifting piece j is separated from the high groove wall and abuts against the inclined tooth surface n4, the cantilever part of the movable shifting piece j is long, slides over the contacted inclined tooth surface n4 after bending deformation and enters the next tooth space n6, and the rotary disc n on the left side keeps relatively static under the action of the left fixed shifting piece i; meanwhile, the right side swing disc d swings in the opposite tooth direction, namely the rocker arm d2 swings leftwards in the drawing 5, the movable shifting piece j abuts against the high groove wall and the flat tooth surface n3, the cantilever of the movable shifting piece j is short in length and does not bend and deform, and the movable shifting piece j pushes the right side turntable n to rotate clockwise and in the opposite tooth direction by one step through the flat tooth surface n 3.
In the step-by-step rotating process of the driver driving the turntable n and the wheel shaft c, the wheel shaft c drives the magnet e to rotate, the coil F cuts magnetic lines of force and converts mechanical energy into electric energy, the electric energy is supplied to the measuring and reporting unit F after conversion processing, and the measuring and reporting unit obtains information such as leg swinging frequency, leg swinging angle, movement time and the like and carries out voice broadcasting; the forecast unit also has the function of playing music.
Claims (4)
1. An intelligent leg swing device mainly comprises a portal frame, a cantilever shaft, a swing arm, a pedal, a force adjusting spring, an energy capturing unit and a measuring and reporting unit, wherein the measuring and reporting unit comprises an energy conversion and storage circuit, a sensor, a counter, a timer and a broadcasting system; the energy harvesting unit comprises a rack, a wheel shaft, a swinging disc, a magnet, a coil, a frequency modulation block, a frequency modulation spring, a movable shifting piece, a fixed shifting piece and a rotary disc; the upper end of the swing arm is arranged on a vertical arm of the portal frame through a cantilever shaft, the lower end of the swing arm is connected with a seat plate of the portal frame through a force adjusting spring, the lower end of the swing arm is provided with a pedal, the swing arm can rotate around the cantilever shaft, and the pedal can rotate around the swing arm or is fixedly arranged with the swing arm; the method is characterized in that: the machine frame is formed by installing two drums on the seat plate through vertical plates, the end covers are installed at the end parts of the drum walls of the drums, and coils are uniformly distributed on the end covers and the drum bottom; fixed grooves with different groove wall heights are uniformly distributed on the circular truncated cones at the outer sides of the two barrel bottoms, and fixed shifting pieces are embedded in the fixed grooves; the wheel shaft consists of a rotating shaft and a wheel disc, and magnets are uniformly distributed on the wheel disc; the outer edge of the swinging plate is provided with a rocker arm, two sides of the swinging plate are provided with swinging plate sinking cavities, the cavity wall of each swinging plate sinking cavity is uniformly provided with moving grooves with different groove wall heights, and moving shifting sheets are embedded in the moving grooves; the center of the turntable is provided with a turntable hole, the outer edge of the turntable is uniformly provided with oblique teeth, and the oblique teeth consist of flat tooth surfaces and oblique tooth surfaces; the two drums are internally provided with wheel shafts, one end of the rotating shaft extends out of a shaft hole at the bottom of the drum and then is sleeved with a swinging disc and a rotating disc, the rotating disc is positioned in a swinging disc sinking cavity, the swinging disc is sleeved on the rotating shaft in an empty way, and the rotating disc is fixedly arranged on the rotating shaft; the free ends of two axially adjacent movable shifting pieces and fixed shifting pieces on the same side of the swing disc are inserted into the same tooth space of the rotary disc, and the fixed shifting pieces are used for preventing the rotary disc from reversing; the rocker arm is provided with a frequency modulation block, the rocker arm is connected with a vertical plate of the rack through two frequency modulation springs, and the installation positions of the frequency modulation block and the frequency modulation springs on the rocker arm are adjustable; the leg swinging force is adjusted by changing the position of the force adjusting spring on the portal frame, the energy capturing unit and the measuring and reporting unit are arranged on the swing arm, a coil in the energy capturing unit cuts magnetic lines to generate electricity and supplies the electricity to the measuring and reporting unit, and the measuring and reporting unit obtains and reports leg swinging frequency, leg swinging angle and movement time information.
2. The intelligent leg swing device according to claim 1, wherein: when the swing arm swings, the swing disc swings back and forth under the action of the inertia force of the frequency modulation block and the elastic force of the frequency modulation spring, and the swing disc drives the turntables on the two sides of the swing disc to rotate in a reverse one-way mode through the movable shifting piece.
3. The intelligent leg swing device of claim 1, wherein: the fixed grooves on the two barrel bottoms are in equal quantity and are in asymmetric configuration, and the movable grooves on the two sides of the swinging plate body are in asymmetric configuration, wherein the asymmetric configuration means that a high groove wall on one barrel bottom is overlapped with a low groove wall on the other barrel bottom when the slots are projected on the same axial section.
4. The intelligent leg swing device according to claim 1, wherein: the balance, the frequency modulation block and the frequency modulation spring form an exciter, and the inherent frequency of the exciter is adjusted through the rigidity of the frequency modulation spring, the mass of the frequency modulation block and the installation positions of the frequency modulation block and the frequency modulation spring.
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| CN203777661U (en) * | 2014-02-07 | 2014-08-20 | 蔡小英 | Electric simple-pendulum swing |
| US9498672B1 (en) * | 2015-11-23 | 2016-11-22 | Larry D. Miller Trust | Elliptical exercise device with moving control tracks |
| CN107555278A (en) * | 2017-08-17 | 2018-01-09 | 浙江师范大学 | A kind of dial type piezoelectricity elevator alarm |
| CN112128273A (en) * | 2020-09-08 | 2020-12-25 | 洪东俊 | Use decelerator of space walker of new forms of energy |
| CN112604231A (en) * | 2020-12-30 | 2021-04-06 | 吉林大学第一医院 | Novel outdoor rehabilitation is with ware of strolling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203777661U (en) * | 2014-02-07 | 2014-08-20 | 蔡小英 | Electric simple-pendulum swing |
| US9498672B1 (en) * | 2015-11-23 | 2016-11-22 | Larry D. Miller Trust | Elliptical exercise device with moving control tracks |
| CN107555278A (en) * | 2017-08-17 | 2018-01-09 | 浙江师范大学 | A kind of dial type piezoelectricity elevator alarm |
| CN112128273A (en) * | 2020-09-08 | 2020-12-25 | 洪东俊 | Use decelerator of space walker of new forms of energy |
| CN112604231A (en) * | 2020-12-30 | 2021-04-06 | 吉林大学第一医院 | Novel outdoor rehabilitation is with ware of strolling |
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