Auxiliary fitness equipment based on Internet of Things

Abstract

The invention relates to the technical field of fitness equipment, in particular to auxiliary fitness equipment based on the internet of things, which comprises a first substrate, a posture correction unit, a second substrate and an auxiliary unit, the posture correction unit is mounted above the first substrate and used for simulating a swimming posture, a plurality of first telescopic rods are fixedly mounted above the first substrate, and the second substrate is used for simulating a swimming posture. A second base plate is spherically hinged to the other end of the first telescopic rod, and an auxiliary unit is slidably mounted above the second base plate and used for assisting swimming posture correction; through mutual cooperation of a sliding plate and a first arc-shaped plate, postures and coordination of arms and legs can be corrected; the body of the user can be rotated through a second arc-shaped plate so as to be matched with the postures of the arms and the feet; the wing protection part can fix the body of a user; and swimming ventilation training can be performed on the user through the water tank.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fitness equipment, and particularly relates to an auxiliary fitness equipment based on the Internet of Things. BACKGROUND

[0002] In order to keep healthy and rich spare time, modern people usually choose fitness hobbies such as running, swimming and mountain climbing, wherein swimming can not only make people experience the comfortable feeling of swimming in water, but also fully exercise the body, so swimming becomes one of the most popular fitness activities. Swimming is mainly divided into freestyle, butterfly, backstroke and breaststroke, wherein the posture of freestyle is more coordinated to the body, that is, more muscle groups are involved, so that freestyle can exercise the body more, and freestyle is the fastest and most effective swimming posture, which can swim long distances with the least physical consumption, so freestyle becomes the favorite swimming posture of swimmers.

[0003] In swimming, swimming requires a large space and a pool, so professional venues such as fitness centers or swimming pools are usually selected when swimming activities are carried out. However, it is difficult for some people to swim and exercise at any time because of the long distance to the fitness center or swimming pool, for example, the daily working crowd, who need to go to the swimming pool specially when they want to swim and exercise after work, and the long round trip makes people less willing to swim and exercise. In addition, the fitness center or swimming pool has more people and is relatively noisy, and the cost is high, so people cannot freely swim and exercise. For example, a swimming machine applied on October 14, 2012, with the application number CN2012102843.1, which includes a human body model, a sensor, a signal line, an integrated circuit, a sound, a cushion, a massager, a spring, a switch, a music switch and a massager switch connected to form a simulated swimming system. Turn on the switch, enter the human body model and swing the limbs, the sensor collects the swing frequency of the limbs or joints, and transmits it to the integrated circuit through the signal line. The integrated circuit raises and lowers each part of the cushion through the spring under the cushion according to the swing frequency of the limbs, the music switch manages the sound, and the massager switch manages the massager. The device can simulate swimming training, but it cannot correct the posture when swimming.

[0004] In swimming, correct swimming posture can fully exercise the body and swim with minimal physical consumption, but some people have difficulty mastering the correct swimming posture when they first touch the water, for example, people with uncoordinated hands and feet have difficulty mastering the correct swimming posture, so that beginners have difficulty learning to swim; and incorrect swimming posture can cause excessive physical consumption or injury to the body, for example, excessive movement of the shoulder during swimming causes shoulder abduction pain or muscle overuse after swimming; for example, an auxiliary device for learning to swim applied for on January 29, 2018, with application number CN201810083862.3, the device includes a support frame placed in the swimming pool, two slide rods are horizontally and parallelly arranged on the top of the support frame; the swimming jacket is connected downward on the slide rod through a rope; the swimming jacket includes a strip-shaped upper fixing belt and a lower fixing belt; the left and right sides of the upper fixing belt are symmetrically provided with elastic shoulder straps; the rear part of the upper fixing belt and the lower fixing belt is connected upward and downward through two connecting belts; the two connecting belts are connected through an elastic apron; the device also has the problem of being unable to correct the posture during swimming.

[0005] For example, a solid swimming machine applied for on April 12, 2019, with application number CN201910325813.0, the device includes a case, a machine body, left and right oars, left and right paddles, a support system, and a general control system, the left and right oars and the left and right paddles are both general floating device structures; the device can be used at any time without being affected by the environment, but the device cannot correct the posture during swimming.

[0006] In view of this, the present application provides an auxiliary fitness device based on the Internet of Things, which can simulate swimming training at home and correct swimming posture. SUMMARY

[0007] To solve the above problems, the present application provides an auxiliary fitness device based on the Internet of Things to solve the problem of being unable to simulate swimming training at home and non-standard swimming posture.

[0008] The application provides the following technical scheme: an auxiliary fitness equipment based on the Internet of Things, which comprises a first base plate, a posture correction unit, a second base plate and an auxiliary unit, the posture correction unit is installed above the first base plate, and the first base plate is placed above the ground; the posture correction unit is used for simulating a swimming posture and training, so that a user can perform swimming training at home when it is inconvenient to go swimming for training, and the posture correction unit can correct the posture during the simulation of swimming training, thereby avoiding poor exercise effect caused by an improper swimming posture; four first telescopic rods are fixedly installed above the first base plate, and the four first telescopic rods are respectively installed at four corners of the first base plate; a second base plate is hingedly connected to the other end of the first telescopic rod, the auxiliary unit is slidably installed above the second base plate, and the auxiliary unit is used for assisting in the correction of the swimming posture; the swimming posture can be further adjusted through the auxiliary unit, so that the swimming posture can be standardized and the exercise effect can be improved.

[0009] The posture correction unit comprises a sliding plate, a first connecting rod, a rotating plate, a rotating rod, a second connecting rod, a sliding block, a third connecting rod and a first arc-shaped plate; a rectangular sliding groove is formed in the surface of the first base plate, the sliding block is slidably installed in the sliding groove, the sliding plate is fixedly installed above the sliding block, and the sliding plate is slidably installed in the sliding groove on the upper surface of the first base plate through the sliding block; the first connecting rod is fixedly installed on the side wall of the sliding plate, the rotating plate is hingedly connected to the other end of the first connecting rod, the rotating rod is fixedly installed at the center of the rotating plate, the rotating rod is rotatably installed at the upper surface of the first base plate, and the second connecting rod is hingedly connected to the side wall away from the first connecting rod of the rotating plate; the sliding block is fixedly installed at the other end of the second connecting rod, a rectangular recess is formed in the surface of the sliding block, the inner surface of the rectangular recess of the sliding block is in a slope structure, the third connecting rod is slidably installed in the recess in the surface of the sliding block, and one end of the third connecting rod is in contact with the inner surface of the recess in the surface of the sliding block; it should be noted that the third connecting rod and the slope structure of the sliding block are rotatably installed with a pulley, so that the third connecting rod slides on the surface of the sliding block through the pulley; the third connecting rod is slidably installed and penetrates through the second base plate, the first arc-shaped plate is fixedly installed at the other end of the third connecting rod, and the first arc-shaped plate is used for placing the ankle of a user; it should be noted that the third connecting rod is in a telescopic structure and can be adjusted in height through a locking bolt, so that it can be adapted to different groups of people.

[0010] In use, the user lies on the second substrate surface, and then alternately moves the hands up and down, that is, swims in the freestyle stroke. When the user alternately moves the hands up and down, the palms of the hands touch the slide plate on the first substrate surface when sliding downward, so that the first substrate moves backward when the user alternately moves the hands up and down. When the slide plate moves backward, the slide plate drives the first connecting rod to move backward synchronously. During the movement of the first connecting rod, the rotating plate at the other end of the first connecting rod is forced to drive the rotating rod to rotate around its axis, so that the slide plate and the first connecting rod on the other side move in opposite directions when the rotating rod and the rotating plate rotate, thereby enabling the slide plate to move alternately with the user's arms, and the second connecting rod on the other side moves forward due to the rotation of the rotating rod and the rotating plate, so that the second connecting rod drives the sliding block to move forward. When the sliding block moves forward, the first end of the third connecting rod in the groove on the surface of the sliding block slides on the inclined surface, so that the third connecting rod moves upward when the sliding block on the inclined surface slides, and the first arc-shaped plate moves upward synchronously when the third connecting rod slides upward, thereby moving the ankles of the user upward through the first arc-shaped plate, and further correcting the swimming posture of the user.

[0011] The auxiliary unit includes a second arc-shaped plate and a fixed rod. A first arc-shaped groove is formed in the upper surface of the second substrate. The second arc-shaped plate is slidably installed in the first arc-shaped groove. A second arc-shaped groove is formed in the surface of the second arc-shaped plate. The fixed rod is fixedly installed in the first arc-shaped groove along the length direction of the second substrate. The fixed rod penetrates the second arc-shaped groove. The second arc-shaped plate can slide left and right along the fixed rod as the axis.

[0012] A water storage unit is fixedly installed above the first substrate. The water storage unit includes a water tank in which purified water is placed. A second telescopic rod is fixedly installed above the first substrate. The other end of the second telescopic rod is installed with the water tank. When the user lies on the surface of the second arc-shaped plate, the face of the user is placed in the water tank. When the face of the user rotates synchronously with the body, the face of the user can be separated from the water tank, so that the water tank can be used for breathing training when the user swims, further improving the effect of swimming training at home. It should be noted that the second telescopic rod can be telescopic, so that the water tank can be adjusted in height together with the second substrate.

[0013] An infrared detector is installed on the surface of the water tank. The infrared detector is a linear thermoelectric infrared detector and is electrically connected to the control system. The infrared detector is used to detect the carbon dioxide content in the exhaled air of the user during swimming training and transmits the detected data to the control system for analysis via an electrical signal. The user's breathing frequency is then adjusted based on the carbon dioxide concentration detected by the infrared detector.

[0014] A flexible material is fixedly installed on the surface of the second arc-shaped plate; the flexible material is an airbag, and the rubber strip is fixed to the surface of the second arc-shaped plate along the width direction of the second arc-shaped plate by adhesive. Multiple rubber strips are fixed along the length direction of the second arc-shaped plate by adhesive. The airbag can provide cushioning when the user's body comes into contact with the second arc-shaped plate, thereby avoiding pressure discomfort caused by prolonged contact between the user's body and the second arc-shaped plate.

[0015] The second arc-shaped plate is coaxially fixed with protective wings on both sides. These wings prevent the user's body from detaching from the second arc-shaped plate during home swimming training and when the user's body rotates in coordination with their arms, thus avoiding injury from a fall to the ground. The length of the protective wings is less than that of the second arc-shaped plate, and they are used to secure the user's waist and abdomen. The smaller length of the protective wings prevents contact between the wings and the user's arms when securing the user, thereby securing the user's waist and abdomen. It should be noted that during use, the user's chest and arms are in contact with the second arc-shaped plate, with the user's arms located on both sides of the second arc-shaped plate, and the user's waist and abdomen are in contact with the protective wings, which partially wrap around the user's waist and abdomen.

[0016] A heart rate detector (not shown in the figure) is fixedly mounted on the surface of the second arc-shaped plate by bolts. The heart rate detector is electrically connected to the control system. When the user's body comes into contact with the second arc-shaped plate, that is, when lying on the surface of the second arc-shaped plate, the heart rate detector can detect the user's heart rate. Thus, when the user is swimming at home, the heart rate can be continuously monitored, and the user's fatigue level can be analyzed through the heart rate. The user's fatigue level can be used to prompt the user to adjust the time, frequency and intensity of home simulated swimming training, thereby further improving the effect of home simulated swimming training and facilitating scientific simulation training to improve training results.

[0017] The first arc-shaped plate is a semi-circular arc structure. The semi-circular arc structure of the first arc-shaped plate can fit the user's ankle when the user conducts swimming simulation training at home. This can further standardize the user's leg posture and avoid unnatural leg bending or improper leg kicking posture, thereby correcting the user's swimming posture.

[0018] The first telescopic rod is a telescopic structure, which allows the distance between the first substrate and the second substrate to be adjusted, thus preventing the user's arm span from being inconsistent with the distance between the first substrate and the second substrate during training, thereby avoiding affecting the user's posture during training.

[0019] The first telescopic rod can extend and retract asynchronously, causing the second base plate to sway irregularly. This, combined with the flexible material, simulates the impact force of water flow during outdoor swimming, thus generating an impact force on the user's arms, body, and head when practicing swimming postures. It should be noted that the asynchronous extension and retraction of the first telescopic rod is done one rod at a time, allowing for circumferential swaying and, consequently, all-around swaying.

[0020] The flexible material is a rubber strip, which is fixed to the surface of the second arc-shaped plate along the width direction of the second arc-shaped plate by adhesive. Multiple rubber strips are fixed along the length direction of the second arc-shaped plate by adhesive. The rubber strip has a hollow structure and is filled with a flowing liquid, which is pure water.

[0021] A first extension plate is slidably mounted on the surface of the second arc-shaped plate. A groove is fixedly opened on the surface of the second arc-shaped plate. A first protrusion that cooperates with the groove is fixedly provided on the surface of the first extension plate that is in contact with the second arc-shaped plate, so that the first extension plate slides on the bottom of the second arc-shaped plate through the first protrusion that cooperates with the groove. The first extension plate is used to extend the length of the second arc-shaped plate.

[0022] A second extension plate is slidably mounted on the other side of the surface of the second arc-shaped plate. The second extension plate has the same structure as the protective wing. The surface of the second extension plate that is in contact with the second arc-shaped plate is provided with a second protrusion that cooperates with the groove, so that the second extension plate slides at the bottom of the second arc-shaped plate through the second protrusion that cooperates with the groove. The second extension plate is used to extend the length of the protective wing.

[0023] The beneficial effects that this invention can achieve through the above technical solutions are as follows:

[0024] 1. This invention, through the coordinated design of a posture correction unit and an auxiliary unit, allows the user to contact the skateboard while performing alternating arm strokes. This causes the rotating board to rotate, and the skateboard on the symmetrical side moves in the opposite direction. Simultaneously, the first arc-shaped board moves the user's ankles upward, thereby correcting the posture and coordination of the arms and legs during home swimming simulation training. Furthermore, the second arc-shaped board rotates the user's body to coordinate with the arm and foot postures, further correcting the posture and coordination of the user's body, arms, and feet. At the same time, the protective wings can fix the user's body during simulated swimming training, preventing the user from falling to the ground and getting injured during the body extension process.

[0025] 2. This invention utilizes a design that integrates a water tank, an infrared detector, and a heart rate monitor. The water tank allows users to practice swimming posture correction and breathing techniques simultaneously during home-based simulated swimming training. The infrared detector monitors the user's exhaled air, providing guidance on the appropriate breathing frequency for scientific training. Simultaneously, the heart rate monitor tracks the user's heart rate, analyzing fatigue levels during home swimming training to adjust training time, frequency, and intensity. This further enhances the effectiveness of home-based simulated swimming training and facilitates scientific simulation training to improve overall results. Attached Figure Description

[0026] The accompanying drawings of the present invention will be described below to enable those skilled in the art to understand them.

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention from another side;

[0029] Figure 3 This is a schematic diagram of the structure of the present invention, showing the left arm sliding down and the right ankle lifting up;

[0030] Figure 4 This is a schematic diagram of the structure of the present invention, showing the right arm sliding down and the left ankle lifting up;

[0031] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0032] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention from another side;

[0033] Figure 7This is a schematic diagram of the structure of the present invention where the third link is lifted, thereby lifting the first arc plate and the ankle.

[0034] Figure 8 This is a schematic diagram of the third link falling structure of the present invention;

[0035] Figure 9 This is a schematic diagram of the second substrate shaking state structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the structure on the other side of the second substrate in the shaking state of the present invention.

[0037] In the diagram: 1. First base plate; 11. First telescopic rod; 12. Slide groove; 2. Posture correction unit; 21. Slide plate; 211. Slider; 22. First connecting rod; 23. Rotating plate; 24. Rotating rod; 25. Second connecting rod; 26. Sliding block; 27. Third connecting rod; 271. Pulley; 28. First arc-shaped plate; 3. Second base plate; 31. First arc-shaped groove; 4. Auxiliary unit; 41. Second arc-shaped plate; 411. Wing; 412. First extension plate; 413. Second extension plate; 42. Fixing rod; 5. Water storage unit; 51. Water tank; 52. Second telescopic rod; 6. Infrared detector; 7. Flexible material. Detailed Implementation

[0038] To facilitate understanding by those skilled in the art, the technical solution of the present invention will be explained in detail below.

[0039] Example 1: As Figures 1 to 4 and Figures 7 to 8 As shown, this embodiment is a freestyle swimming simulation training, which is a simulated swimming training for children at home; the flexible material is made of airbag material, and the first telescopic rod is synchronously telescopic.

[0040] An IoT-based assistive fitness device includes a first base plate 1, a posture correction unit 2, a second base plate 3, and an auxiliary unit 4. The posture correction unit 2 is mounted on top of the first base plate 1, which is placed on the ground. The posture correction unit 2 is used to simulate swimming postures and provide training, allowing users to train at home when it is inconvenient to go swimming. The posture correction unit 2 also corrects postures during simulated swimming training, preventing poor training results caused by improper swimming postures. Four first telescopic rods 11 are fixedly mounted on top of the first base plate 1, and are respectively installed at the four corners of the first base plate 1. The other end of each first telescopic rod 11 is ball-jointed to the second base plate 3. The auxiliary unit 4 is slidably mounted on top of the second base plate 3. The auxiliary unit 4 is used to assist in correcting swimming postures, further adjusting the swimming posture to standardize the posture and improve training results.

[0041] The posture correction unit 2 includes a sliding plate 21, a first connecting rod 22, a rotating plate 23, a rotating rod 24, a second connecting rod 25, a sliding block 26, a third connecting rod 27, and a first arc-shaped plate 28. A rectangular groove 12 is formed on the surface of the first substrate 1. A slider 211 is slidably installed in the groove 12. The sliding plate 21 is fixedly installed above the slider 211. The sliding plate 21 is slidably installed in the groove 12 on the upper surface of the first substrate 1 via the slider 211. The first connecting rod 22 is fixedly installed on the side wall of the sliding plate 21. The other end of the first connecting rod 22 is hinged to the rotating plate 23. A rotating rod 24 is fixedly installed at the center of the rotating plate 23. The end of the rotating rod 24 is rotatably installed on the upper surface of the first substrate 1. The second connecting rod 25 is hinged to the side wall of the rotating plate 23 away from the first connecting rod 22. The other end of the second connecting rod 25 is fixedly installed with the sliding block 26. The sliding block 26 has a rectangular groove on its surface. The inner surface of the groove is a beveled surface. The third connecting rod 27 is slidably mounted in the groove of the sliding block 26. One end of the third connecting rod 27 contacts the inner surface of the groove on the surface of the sliding block 26. A pulley 271 is rotatably mounted at the contact end between the third connecting rod 27 and the beveled surface of the sliding block 26, allowing the third connecting rod 27 to slide on the surface of the sliding block 26. The third connecting rod 27 is slidably mounted and passes through the second base plate 3. A first arc-shaped plate 28 is fixedly mounted at the other end of the third connecting rod 27. The first arc-shaped plate 28 is used to support the user's ankle. The third connecting rod 27 is telescopic and its height can be adjusted by locking bolts, thus adapting to different user groups.

[0042] During use, the user lies prone on the surface of the second substrate 3 and then performs an alternating up-and-down arm stroke, similar to freestyle swimming. As the user's hands slide down, they touch the slide plate 21 located on the surface of the first substrate 1, causing the first substrate 1 to move backward using the alternating arm stroke posture. As the slide plate 21 moves backward, it drives the first connecting rod 22 to move backward synchronously. During the backward movement of the first connecting rod 22, the rotating plate 23 hinged to the other end of the first connecting rod 22 is subjected to force, causing the rotating rod 24 to rotate around its own axis. This causes the slide plate 21 and the first connecting rod 22, symmetrically arranged on the other side, to rotate as the rotating rod 24 and rotating plate 23 rotate. The rod 22 moves in the opposite direction, allowing the slide plate 21 to move alternately with the user's arms. The second connecting rod 25, symmetrically arranged on the other side, moves forward due to the rotation of the rotating rod 24 and the rotating plate 23, thereby causing the second connecting rod 25 to drive the sliding block 26 forward. While the sliding block 26 moves forward, one end of the third connecting rod 27 in the groove on the surface of the sliding block 26 slides on the inclined structure, thereby causing the third connecting rod 27 to move upward as it slides through the sliding block 26 on the inclined structure. At the same time as the third connecting rod 27 slides upward, the first arc plate 28 moves upward simultaneously, thereby moving the user's ankle upward through the first arc plate 28, thereby correcting the user's swimming posture.

[0043] By having the user extend their arms while swimming, the skateboard 21 moves backward, causing the user's ankle to move upward as their arms slide downward. This trains and corrects the user's posture, preventing incorrect arm and ankle postures or incorrect arm or ankle extension angles caused by lack of coordination during swimming training, which can affect the efficiency of swimming training. This method is convenient for users to conduct swimming training at home and correct their swimming posture.

[0044] The auxiliary unit 4 includes a second arc-shaped plate 41 and a fixing rod 42. A first arc-shaped groove 31 is formed on the upper surface of the second base plate 3. The second arc-shaped plate 41 is slidably installed in the first arc-shaped groove 31. A second arc-shaped groove is formed on the surface of the second arc-shaped plate 41. A fixing rod 42 is fixedly installed in the first arc-shaped groove 31 along the length direction of the second base plate 3. The fixing rod 42 passes through the second arc-shaped groove. The second arc-shaped plate 41 can slide left and right along the fixing rod 42 as the axis through the fixing rod 42 installed in the second arc-shaped groove. When the user's body lies on the surface of the second arc-shaped plate 41, the user's body is in contact with the second arc-shaped plate 41 when the user's arms slide alternately during swimming training. This causes the second arc-shaped plate 41 to rotate around the fixing rod 42 as the axis. Thus, the user's body can rotate when the arms slide, which is convenient for the user to simulate and correct the body posture when swimming training at home.

[0045] A water storage unit 5 is fixedly installed on the top of the first substrate 1. The water storage unit 5 includes a water tank 51 containing purified water. A second telescopic rod 52 is fixedly installed on the top of the first substrate 1, and the water tank 51 is installed at the other end of the second telescopic rod 52. When a user lies on the surface of the second arc-shaped plate 41, the user's face is placed in the water tank 51. When the user's face rotates synchronously with the body, the user's face can be removed from the water tank 51. This allows the user to practice breathing techniques while swimming through the water tank 51, further improving the effectiveness of swimming training at home. It should be noted that the second telescopic rod 52 is telescopic, allowing the water tank 51 to be adjusted in height in conjunction with the second substrate 3.

[0046] An infrared detector 6 is installed on the surface of the water tank 51. The infrared detector 6 is a linear thermoelectric infrared detector and is electrically connected to the control system. The infrared detector is used to detect the carbon dioxide content in the exhaled air of the user during swimming training and transmits the detected data to the control system for analysis via an electrical signal. The user's breathing frequency is adjusted based on the carbon dioxide concentration detected by the infrared detector 6. This helps to adjust the swimming breathing frequency according to the user's movement frequency, and helps the user master the correct swimming breathing frequency and method or correct the user's breathing frequency, which is beneficial for scientific training.

[0047] A flexible material 7 is fixedly installed on the surface of the second arc-shaped plate 41; the flexible material 7 is an airbag, and the rubber strip is fixed to the surface of the second arc-shaped plate 41 along the width direction of the second arc-shaped plate 41 by adhesive. Multiple rubber strips are fixed to the surface of the second arc-shaped plate 41 along the length direction of the second arc-shaped plate 41 by adhesive. The airbag can provide cushioning when the user's body comes into contact with the second arc-shaped plate 41, thereby avoiding pressure discomfort when the user's body comes into contact with the second arc-shaped plate 41 for a long time.

[0048] The second arc-shaped plate 41 is coaxially fixedly mounted with protective wings 411 on both sides. These wings 411 prevent the user's body from detaching from the second arc-shaped plate 41 during home swimming training and when the user's body rotates in coordination with arm movements, thus avoiding injury from a fall to the ground. The length of the wings 411 is less than the length of the second arc-shaped plate 41, and the wings 411 are used to secure the user's waist and abdomen. The smaller length of the wings 411 prevents them from colliding with the user's body when securing them. The user's arms are used to contact the wing portion 411, thereby securing the user's waist and abdomen. This prevents the user's arms from coming into contact with the wing portion 411 during home swimming training, which could restrict or injure the user's arms. This improves the user's safety during use. It should be noted that during use, the user's chest and arms are in contact with the second arc-shaped plate 41, with the user's arms located on both sides of the second arc-shaped plate 41. The user's waist and abdomen are in contact with the wing portion 411, which partially covers the user's waist and abdomen.

[0049] A heart rate detector (not shown in the figure) is fixedly mounted on the surface of the second arc-shaped plate 41 by bolts. The heart rate detector is electrically connected to the control system. When the user's body comes into contact with the second arc-shaped plate 41, that is, when lying on the surface of the second arc-shaped plate 41, the heart rate detector can detect the user's heart rate. Thus, when the user is swimming at home, the heart rate can be continuously monitored, and the user's fatigue level can be analyzed through the heart rate. The user's fatigue level can be used to prompt the user to adjust the time, frequency and intensity of home simulated swimming training, thereby further improving the effect of home simulated swimming training and facilitating scientific simulation training to improve training results.

[0050] The first arc plate 28 is a semi-circular arc structure. The semi-circular arc structure of the first arc plate 28 can fit the user's ankle when the user conducts swimming simulation training at home. This can further standardize the user's leg posture when conducting swimming simulation training at home, avoid unnatural leg bending or improper leg kicking posture, and thus correct the user's swimming posture.

[0051] Example 2: As Figures 5 to 10 As shown, unlike the above embodiments, this embodiment is for adults to conduct simulated swimming training at home; the flexible material 7 is made of hollow rubber material, and the first telescopic rod 11 extends and retracts asynchronously; the first extension plate 412 and the second extension plate 413 are slidably installed on both sides of the arc plate.

[0052] The first telescopic rod 11 is a telescopic structure, which allows adjustment of the distance between the first substrate 1 and the second substrate 3. This avoids the user's arm span not matching the distance between the first substrate 1 and the second substrate 3 during training, thus preventing any impact on the user's posture during training. For example, when adults are swimming, their arm span is longer than that of children. The user can adjust the height of the first telescopic rod 11 through the control system, causing the first telescopic rod 11 to extend, thereby increasing the distance between the first substrate 1 and the second substrate 3, i.e., increasing the height of the second substrate 3. This further prevents adults from having difficulty extending their arms and resulting in improper posture.

[0053] The first telescopic rod 11 can extend and retract asynchronously, causing the second base plate 3 to sway irregularly. This, combined with the flexible material 7, simulates the impact force of water flow during outdoor swimming. Specifically, it can generate an impact force on the user's arms, body, and head when practicing swimming postures, thereby further improving the effect of home swimming simulation training. It should be noted that the asynchronous extension and retraction of the first telescopic rod 11 is done one rod at a time, allowing for circumferential swaying and thus all-around swaying.

[0054] The flexible material 7 is made of rubber strips, which are glued to the surface of the second arc-shaped plate 41 along its width and multiple rubber strips are glued to the length of the second arc-shaped plate 41. The rubber strips are hollow and filled with a flowing liquid, which is pure water. The rubber strips provide cushioning when the user's body comes into contact with the second arc-shaped plate 41, thus avoiding discomfort caused by prolonged contact. Furthermore, the first telescopic rod 11 can cooperate with the rubber strips, so that when the first telescopic rod 11 extends asynchronously, the flowing liquid in the rubber strips can simulate the impact flow of outdoor water, further facilitating simulated swimming at home and improving the effect of simulated swimming training.

[0055] A first extension plate 412 is slidably mounted on the surface of the second arc-shaped plate 41. A groove is fixedly formed on the surface of the second arc-shaped plate 41. A first protrusion that mates with the groove is fixedly provided on the surface of the first extension plate 412 that is in contact with the second arc-shaped plate 41. This allows the first extension plate 412 to slide at the bottom of the second arc-shaped plate 41 via the first protrusion that mates with the groove. The first extension plate 412 is used to extend the length of the second arc-shaped plate 41, so that it can fit users of different heights and prevent the length of the user's body parts from being greater than the second arc-shaped plate 41. This avoids difficulties in turning the body and coordinating with the arms when the user is not in contact with the second arc-shaped plate 41, and also avoids improper posture when the user is not in contact with the second arc-shaped plate 41.

[0056] A second extension plate 413 is slidably mounted on the other side of the surface of the second arc-shaped plate 41. The second extension plate 413 has the same structure as the protective wing 411. The surface of the second extension plate 413 that is in contact with the second arc-shaped plate 41 is provided with a second protrusion that cooperates with the groove, so that the second extension plate 413 slides at the bottom of the second arc-shaped plate 41 through the second protrusion that cooperates with the groove. The second extension plate 413 is used to extend the length of the protective wing 411, so as to further fit users of different heights, and further prevent the length of the user's waist and abdomen from being greater than the second arc-shaped plate 41. This avoids the user's body turning difficulties and difficulty in coordinating with the arms due to the body not being in contact with the second arc-shaped plate 41, and thus avoids the user's improper posture due to the body not being in contact with the second arc-shaped plate 41.

[0057] During use, the user first fills the water tank 51 with water, then adjusts the length of the second arc-shaped plate 41 and the protective wing 411 by pulling out or retracting the first extension plate 412 and the second extension plate 413. Then, the user lies on the surface of the second arc-shaped plate 41 with their body pressed against it, and places their ankles on the corresponding surfaces of the first arc-shaped plates 28 on both sides. After the user's body is pressed against the second arc-shaped plate 41, the protective wing 411 and the first arc-shaped plate 28, the user spreads their arms and performs alternating paddling motions, while the body and head rotate with the arms through the second arc-shaped plate 41.

[0058] When a user alternates arm movements while paddling, their arms contact the slide plate 21 on the surface of the first base plate 1. This causes the slide plate 21 to move backward, simultaneously moving the first connecting rod 22 backward. During this backward movement, the rotating plate 23, hinged to the other end of the first connecting rod 22, is subjected to force, causing the rotating rod 24 to rotate around its own axis. As the rotating rod 24 and rotating plate 23 rotate, the slide plate 21 and the first connecting rod 22, symmetrically arranged on the other side, move in the opposite direction. This allows the slide plate 21 to move in coordination with the user's alternating arm movements. Furthermore, the second connecting rod 25, which is symmetrically arranged on the other side, moves forward due to the rotation of the rotating rod 24 and the rotating plate 23, thereby causing the second connecting rod 25 to drive the sliding block 26 to move forward. While the sliding block 26 moves forward, one end of the third connecting rod 27 in the groove on the surface of the sliding block 26 slides on the inclined structure, thereby causing the third connecting rod 27 to move upward as it slides through the sliding block 26 on the inclined structure. At the same time as the third connecting rod 27 slides upward, the first arc plate 28 moves upward synchronously, thereby moving the user's ankle upward through the first arc plate 28, thereby correcting the user's swimming posture.

[0059] While the user moves their arms and body, their head comes into contact with the purified water in tank 51, and the user rotates their head in coordination with their body to simulate swimming breathing. During the swimming breathing simulation, the infrared detector 6 detects carbon dioxide in the user's exhaled air, and the control system analyzes this information to provide prompts on the user's breathing frequency, thus helping the user master the correct breathing frequency and method. At the same time, the heart rate detector fixedly installed on the surface of the second arc plate 41 can simultaneously detect the user's heart rate during home simulated swimming training, thereby determining the user's level of fatigue. Based on the level of fatigue, the system can prompt the user on the duration, frequency, and intensity of home simulated swimming training, thereby further improving the effectiveness of the user's home simulated swimming training.

[0060] The present invention is described using only the above embodiments, but the structure, arrangement, and connection relationships of the various components of the present invention can be changed accordingly.

Claims

1. An assistive fitness device based on the Internet of Things, characterized in that: The system includes a first substrate (1), a posture correction unit (2), a second substrate (3), and an auxiliary unit (4). The posture correction unit (2) is mounted on the top of the first substrate (1) and is used to simulate swimming posture. Multiple first telescopic rods (11) are fixedly mounted on the top of the first substrate (1). The other end of the first telescopic rod (11) is ball-jointed to the second substrate (3). The auxiliary unit (4) is slidably mounted on the top of the second substrate (3) and is used to assist in correcting swimming posture.

2. The assistive fitness device based on the Internet of Things according to claim 1, characterized in that: The posture correction unit (2) is symmetrically arranged on the surface of the first substrate (1). The posture correction unit (2) includes a sliding plate (21), a first connecting rod (22), a rotating plate (23), a rotating rod (24), a second connecting rod (25), a sliding block (26), a third connecting rod (27), and a first arc plate (28). The sliding plate (21) is slidably mounted on the upper surface of the first substrate (1). The first connecting rod (22) is fixedly mounted on the side wall of the sliding plate (21). The other end of the first connecting rod (22) is hinged to the rotating plate (23). The center of the rotating plate (23) is fixed. A rotating rod (24) is installed, with its end rotatably mounted on the upper surface of the first substrate (1). A second connecting rod (25) is hinged to the side wall of the rotating plate (23) away from the first connecting rod (22). A sliding block (26) is fixedly installed at the other end of the second connecting rod (25). The surface of the sliding block (26) is a sloping structure. A third connecting rod (27) is slidably mounted on the upper surface of the sliding block (26). The third connecting rod (27) is slidably mounted and passes through the second substrate (3). A first arc-shaped plate (28) is fixedly mounted at the other end of the third connecting rod (27).

3. The IoT-based assisted fitness device according to claim 2, characterized in that: The auxiliary unit (4) includes a second arc plate (41) and a fixing rod (413) and a second extension plate (42). A first arc groove (31) is provided on the upper surface of the second substrate (3). The second arc plate (41) is slidably installed in the first arc groove (31). A second arc groove is provided on the surface of the second arc plate (41). The fixing rod (413) and the second extension plate (42) are fixedly installed in the first arc groove (31) along the length direction of the second substrate (3). The fixing rod (413) and the second extension plate (42) pass through the second arc groove.

4. The IoT-based assisted fitness device according to claim 3, characterized in that: A water storage unit (5) is fixedly installed on the top of the first substrate (1); The water storage unit (5) includes a water tank (51), and a second telescopic rod (52) is fixedly installed above the first base plate (1). The water tank (51) is installed at the other end of the second telescopic rod (52).

5. The IoT-based assisted fitness device according to claim 4, characterized in that: An infrared detector (6) is installed on the surface of the water tank (51). The infrared detector (6) is a linear structure and is a thermoelectric infrared detector (6). The infrared detector (6) is electrically connected to the control system.

6. The IoT-based assisted fitness device according to claim 5, characterized in that: A flexible material (7) is fixedly installed on the surface of the second arc plate (41); the flexible material (7) is a rubber strip or an air bag, the rubber strip or air bag is fixedly installed along the width direction of the second arc plate (41), and multiple rubber strips or air bags are fixedly installed along the length direction of the second arc plate (41). The rubber strip is a hollow structure.

7. The IoT-based assisted fitness device according to claim 5, characterized in that: The second arc-shaped plate (41) is fixedly mounted with protective wings (411) on both sides coaxially. The length of the protective wings (411) is less than the length of the second arc-shaped plate (41).

8. The IoT-based assisted fitness device according to claim 6, characterized in that: A first extension plate (412) is slidably mounted on the surface of the second arc-shaped plate (41), and a second extension plate (413) is slidably mounted on the other side of the surface of the second arc-shaped plate (41). The second extension plate has the same structure as the protective wing (411).

9. The IoT-based assisted fitness device according to claim 8, characterized in that: A heart rate detector is fixedly installed on the surface of the second arc-shaped plate (41), and the heart rate detector is electrically connected to the control system.

10. An assistive fitness device based on the Internet of Things according to claim 9, characterized in that: The first arc plate (28) has a semi-circular arc structure.

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