KR20210143605A - Human Body Balance Correction Indoor Bike Trainer using 3-axis acceleration sensor - Google Patents

Abstract

The present invention relates to a tilting indoor bike trainer using an acceleration sensor for human body balance correction. The present invention is to recognize asymmetrical muscle development common to many people in real time and restrain movement immediately and independently so that muscular balance correction can be achieved. According to the present invention, low-noise driving is made possible by fixing to a frame a module driving a front sirocco fan axle through a tensioner at a friction cross-sectional area-ensured position with power generated at a spindle shaft of a crank and returning after driving a flywheel axle through the tensioner. A user can move a handle to the left and right through a rail a fixed to a bottom frame and bearings a at both ends of a fork. At this time, left and right tilting leads to an increase in potential energy, and thus returning to the original position can be natural. A pivot in the back of the frame absorbs the up-down and left-right swing angles using a ball joint with reference to the point of contact between the actual bike rear wheel and the ground. Four ground-fixed bearings b and a rail b fixed to the bottom frame are coupled such that the entire frame is capable of reciprocating forward and backward. In the event of deviation from the center even in this case, the potential energy increases and returning to the original position can be natural. A three-axis angular velocity sensor is attached to the frame and the generated data is used such that the magnitude and direction of the force of front-back and left-right movement is monitor-displayed in a three-dimensional graphic form. As a result, the user can detect asymmetrical force lopsidedness and correct pedaling immediately and independently. Accordingly, perfect pedaling can be induced and human body balancing can be achieved.

Description

{Human Body Balance Correction Indoor Bike Trainer using 3-axis acceleration sensor}

The present invention relates to an indoor bicycle trainer, which has a feature of tilting forward and backward, left and right, which allows natural tilt and return by applying potential energy, and graphically uses data from an acceleration sensor to allow the user to determine the magnitude and direction of the force. It allows you to see it in real time and immediately correct it yourself.

You can see some of the best cyclists in the world training without dropping a water bottle while driving on the road with a water bottle on their back with their torso bent. This training is done for efficient pedaling without loss because it is known that the efficiency of power transmission decreases when the body shakes due to excessive torque before and after pedaling or leaning to the left and right during pedaling.

Most common people have asymmetrical muscles or poor core muscles due to incorrect posture or habits. With these problems, if you ride a conventional indoor bicycle, it is fixed to the floor, so the reaction according to the user's movement rather stimulates the user, making it difficult and boring to continue.

Also, since you are doing it indoors, you may use a fan or the like to prevent body heat from rising.

Therefore, a trainer using human body power was developed. This is also patent application number 1020180083985 (2018.07.18) that the inventor worked as a developer.

However, the movement of the front and rear left and right is different from the movement of outdoor driving. For example, although the handle moves widely from side to side, the handle angle is tilted only 4', so natural movement is impossible.

Also, among the club members, they say that they exercised indoors at home during the winter on an indoor bicycle, but when it comes to running outdoors in the spring, they do not feel the effect of indoor training much.

It can be seen that the position and function of the muscles developed on a fixed indoor bicycle and the muscles required for actual outdoor driving are different.

So, overseas, they make devices that can be found by searching for Rocker Plate. A conventional trainer is placed on a wide plate, and an axis is made in the center below it so that it can be tilted left and right, and rubber balloons or springs are used on the left and right sides of the axis to create a repulsive force against tilting left and right, but when actually tilting, a lot of artificial force is created It is sometimes impossible to enter and reverse the inclination due to the collapse of potential energy.

Accordingly, the present invention has developed an indoor bicycle trainer that naturally moves the tilted user back and forth with natural movement left and right and tilts them back to their original position without any special effort.

Here, potential energy was used for natural posture restoration, and we found the optimal combination, recognizing that it can be rather uncomfortable if it is excessive or insufficient.

In addition, by attaching an acceleration sensor to graphic the magnitude and direction of the power generated by the user, he invented a technology that can detect imbalances in the muscles of the human body in real time and immediately correct them.

[Prior art document]

[Patent Document] Application No. US 80031404.A

Application No. 1020180083985 (2018.07.18)

Accordingly, the present invention is to solve a situation in which the conventional trainer is fixed to the floor, rather stressing the user and unable to correct the asymmetric muscles.

Another object of the present invention is to create natural inertia and fluid resistance by simultaneously driving a flywheel and a sirocco fan with the power of pedaling, and send the generated fluid toward the user's body to reproduce the feeling that can be felt outdoors as much as possible, so that it is not boring and fun. and to assist with interesting training.

Another object of the present invention is to use potential energy for natural steering wheel tilt and restoration thereof in outdoor driving.

Another object of the present invention is to realize a natural back-and-forth movement by absorbing this by the trainer as the weight moves back and forth due to the reaction because the user cannot produce the same output 360' when pedaling.

Another object of the present invention is to shape the user's front, back, left and right movements and output them in 3D to the monitor, so that the user can check his/her unnecessary movements in real time and immediately correct himself to find the balance of the human body.

In order to solve the above problems, the present invention turns the flywheel and sirocco fan using a single ribbed belt with the power generated from the pedal in the module unit, and the flywheel and shaft are fixed to prevent slipping of the ribbed belt. It is characterized in preventing slip of the ribbed belt and reducing noise by fixing the tensioner in the position that wraps the 2 pulleys as much as possible and the sirocco fan and the 3 pulleys fixed on the shaft as much as possible.

In addition, the bearings are fixed at both ends of the fork and the bottom frame in contact with the bearings has rails that can drive the bearings crosswise. At this time, when the handle exceeds the limit of inclination, the structure is wrapped up to the top of the bearing to prevent separation of the bottom frame and the fork, and a step to prevent separation is made on the left and right sides of the bearing so that the bearing must be driven only within the rail, and the shape of the rail depends on the shape of the handle. When moving left and right, the center point of the handle moves left and right and when it reaches both ends, it rises up to 3mm in the sky direction, which enables natural recovery using potential energy.

In addition, the rear frame part defines the point where the rear wheel of the bicycle actually touches the ground as a pivot point, and arranges a ball joint at this point to solve the left and right swing angle of the fork part and the fine up and down swing angle.

In addition, the bearings are fixed on the four bottom fixing parts to connect the bottom fixing part and the bottom frame part, and these bearings move in the rail fixed to the bottom frame part. The rail is concave upwards, and the height difference between both ends and the center is up to 4mm, and it has a feature to prevent departure by making a step difference to prevent the left and right side of the rail.

In addition, the sensor unit attaches a 3-axis acceleration sensor near the handle, extracts the direction and size of the user's movement while riding the indoor bicycle trainer, turns it into a three-dimensional graphic, and outputs it on the monitor in real time. Directly viewing the graphic and immediately controlling the movement on their own to stabilize the pedaling output, which is not boring and maintains the balance of the human body through long-term training that is most similar to outdoor driving.

According to the present invention, due to moderate inertia and wind blowing from the front during pedaling, light pedaling such as outdoors and also body heat increase are prevented, thereby enabling long-term training.

In addition, due to the handle that can be tilted left and right, anyone can perform pedaling such as dancing (standing), and when pedaling sitting (sitting), the user can check the left and right muscle balance by checking the left and right muscle balance. It has a catch effect.

In addition, if over-torque in a specific direction occurs during pedaling, the indoor bike trainer absorbs the torque and moves it back and forth, so that the stress does not return to the human body. It has a very perfect effect on improving the pedaling level of athletes and training professional athletes.

In addition, by expressing the direction and magnitude of the force in three dimensions on the monitor using the 3-axis accelerometer data, it is possible to analyze the pedaling of not only the general public but also the professional athletes, thereby accurately recognizing and correcting the training direction and method, thereby balancing the effect.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram showing the entire invention.
Figure 2 is a view showing the arrangement of the pulleys inside the module case.
Figure 3 is a view showing the coupling of the fork bearing and the bottom frame.
4 is a side cut-away view of the fork bearing and the bottom frame.
5 is a view of the pivot ball joint behind the frame.
Figure 6 is a view showing the combination of the bottom frame and the bottom bearing.
7 is a side cutaway view of the floor frame and the floor bearing.
Fig. 8 is a view showing a handle, an acceleration sensor, and a monitor;

Effects and features of the present invention will be described with reference to Figs.

The power generated from the crank arm 6 drives the shaft-fixed 1 pulley 3 , 2 pulley 4 , and 3 pulley 10 . However, the ribbed belt (5) is used to suppress the generation of indoor noise during high rotation. At this time, if the tension of the belt 5 is weak, slip may occur, resulting in loss of power and noise, so a tensioner 8 is required. The position of the tensioner 8 is important in order to secure adequate tension and a large friction area. Therefore, the tensioner 8 is placed near the 2 pulleys 4 and 3 pulleys 10, respectively, but by placing the pulleys in a position that wraps the pulleys as much as possible to ensure proper tension and a wide friction surface, the inertia of the flywheel 7 and the sirocco fan 9 ) to complete the power transmission module 11 to handle the fluid resistance. This replaces the inertia of the body weight with the flywheel 7 when riding a bicycle outdoors and replaces the wind resistance in the outdoors with the fluid resistance of the sirocco fan 9, so that it is possible to obtain both outdoor driving texture and suppression of body heat rise.

Bearings a (13) are arranged at both ends of the fork part (12), and the bearing a (13) reciprocates on the rail a (15) fixed to the bottom frame (14). At this time, the reciprocating motion of the bearing a (13) enables the dancing (standing) method in outdoor bicycle driving. When one bearing a(13) goes up, the opposite bearing a(13) performs a cross drive that goes down, so that anyone can safely do the dancing casting method indoors without falling down. In order to safely and widen the left and right movable range of the handle 26, the center point of the tilting is 215 mm below the ground reference point (17). At this time, the step a(23) is added to prevent the bearing a(13) inside the rail a(15) from being separated to prevent separation. In addition, when the handle 26 is heavily tilted, the bottom frame 14 and the frame 1 are covered with the cover a (16) above the bearing a (13) to prevent separation.

And in order for the inclined user and the frame (1) to naturally return to the center, the rail a (15) is designed (28) so that the center of the handle 26 rises higher than the center when it is inclined, so that the more inclined the potential energy is generated (28), which has a characteristic that allows it to return to the center without additional effort. The greater the height difference between the center and the periphery, the more difficult it is to tilt the steering wheel. Therefore, the optimal height difference is defined as 3mm.

In outdoor bicycle driving, the rear wheel is dependent on the front wheel, so there is no meaning in movement, and the pivot 18 is placed on the back of the frame 1 using a ball joint to implement the dependent movement. The left and right tilting of the handle 26 and the finely up and down swing angle at this time are solved using a ball joint.

Four bearings b (19) are arranged on the ground, and each bearing b (19) is coupled to four rails b (20) fixed to the four corners of the bottom frame (14). The bearing b(19) is disposed under the rail b(20) opposite to the coupling of the fork part (12), and the rail b(20) moves. At this time, the step b (24) is added to prevent the bearing b (19) from being separated from the inside of the rail b (20) to prevent separation. The rail b (20) has a simple arc shape, and the height difference between the central part and the peripheral part is defined as a maximum of 4 mm. The bottom frame 14 and the frame 1 move back and forth at the same time, and this absorbs the center movement generated as a reaction of torque during pedaling. The larger the movement, the greater the waste of energy, which is a very important issue from the player's point of view. Therefore, it is very effective for the general public to check their output concentration in real time to balance the human body, and it will be an important training tool for producing even output for athletes who need to save even one second. Also, if the driving texture is similar to that in the outdoors, it will achieve the goal without being boring.

In order to make the front-back, left-right tilting method of the invention more certain and concrete, if the direction and size of the movement are graphically provided in 3D using the 3-axis acceleration sensor 25, and provided to real-time users, the general public and professional players can immediately It will be a training that can be corrected.

1: Frame 2: Crank Spindle
3: 1 pulley 4: 2 pulley
5: Rib belt 6: Crank arm
7: flywheel 8: tensioner
9: Sirocco fan 10: 3 pulley
11: module 12: fork part
13: bearing a 14: bottom frame
15: rail a 16: cover part a
17: reference point 18: beebot
19: bottom bearing b 20: rail b
21: cover part b 23: step part a
24: step b 25: 3-axis acceleration sensor
26: handle 27: monitor
28: Change of center point during cross driving

Claims (1)

In composing a tilting indoor bicycle trainer for body balance correction using an acceleration sensor, 1 pulley (3) is fixed to the spindle (2) shaft of the crank (6), and the flywheel (7) is installed near the front side with 2 pulleys (4). In order to fix and increase the frictional cross-sectional area between the 2 pulleys (4) and the belt (5), the tensioner (8) is placed in the most surrounding place and near the lower part of the handle (26), a sirocco fan (9) that will produce the same fluid resistance as the fluid resistance that occurs during outdoor driving. ) and the three pulleys 10 are fixed and the tensioner 8 for increasing the frictional cross-sectional area is wrapped as much as possible, and the three shafts are driven without noise from the crank 6 using one ribbed belt 5. It becomes one module 11 and is bolted to the frame 1,

Two bearings a(13) are fixed at both ends to the front fork part 12 of the frame (1), two rails a(15) to hold the bearings are fixed to the bottom frame 14, and the bearing a(13) is a rail It enables left and right tilting together with the frame (1) from the inside of a(15), and the rail a(15) is fixed with a cover a(16) wrapped up to prevent the bearing a(13) from being separated, and the bearing a(13) The left and right step parts a (23) are added so as not to fall left and right based on the moving path, and this creates a condition that the bicycle handle 26 can be safely moved left and right, and the center point of moving the handle 26 left and right is the actual front wheel of the bicycle From the point that touches the ground, it is set at a point 17 that is 215 mm below the vertical, and through this, the width of the left and right movement of the handle 26 is secured. Rail a (13) is made to be a cross drive stroke (28) so that it can return to the center naturally without going up and applying force, so that left and right asymmetry in human body drive can be found,

The pivot at the back of the frame (1) uses the ball joint (18) based on the point in contact with the ground of the actual rear wheel of the bicycle, and limits the vertical and horizontal swing angle to one vertex.

The bottom frame part 14 raises the bottom frame 14 and the four rails b 20 fixed on the four bearings b 19 fixed to the ground 29 to raise the frame 1 and the bottom frame 14 as a whole. The rail b(20) is fixed with a cover b(21) wrapped to the bottom so that the bearing b(19) does not come off, and the left and right steps b (24) is padded and the shape of the rail b (20) is a concave arc shape with a height difference between the middle and the end of 4 mm, so that the front and rear center movement caused by high torque in a specific direction during pedaling can naturally return to the center,

The three-axis angular velocity sensor 25 is attached to the handle 26, and the path and the magnitude of the force moving forward and backward are three-dimensionally output on the real-time monitor 27. Referring to the displayed data, the movement of the human joint of the linear movement is the bicycle of the rotational movement. When power is transmitted to the pedal, bias in a specific direction can be checked, and by immediately limiting and correcting unnecessary movements, the acceleration sensor is used to solve the imbalance of balance caused by the asymmetry of human muscles by inducing high-quality pedaling. Body Balance Correction Tilting Indoor Bike Trainer.

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