KR200184373Y1 - A treadmill which can be driven in both directions - Google Patents

Abstract

According to the present invention, there is provided a two-way running machine having a novel feature that can be driven in the backward direction in addition to the function that can be driven in the forward direction as in the conventional treadmill. In addition, when the running machine is switched from the forward direction to the backward direction, the driving speed of the servomotor and the inclination angle of the walking belt are readjusted for the user's safety, and the tension adjustment is performed to maintain the tension of the walking belt constant. Means are installed.

Therefore, the treadmill according to the present invention, in addition to the configuration of the conventional omnidirectional driving treadmill, means for selecting to drive the walking belt in the rearward direction, and the servomotor is reversed in response to the command of the rearward driving selecting means. Means for selecting to drive, means for selecting the speed of the servo motor and inputting the speed data to the servo motor when the servo motor is driven in the reverse direction, and selecting an inclination angle of the walking belt to drive the inclination motor according to the inclination angle. And tensioning means for maintaining a constant tension of the walking belt.

Description

Treadmill driven in both directions {A TREADMILL WHICH CAN BE DRIVEN IN BOTH DIRECTIONS}

The present invention relates to a treadmill, which is a kind of exercise equipment, and more specifically, the walking belt of the treadmill can be driven not only in the front direction but also in the rear direction. It is about a treadmill.

Background Art Conventionally, treadmills as indoor exercise equipment have been widely used. The treadmill is designed to allow athletes to walk or run lightly on the walking belt, which is moving forward, and not only to make it easier to exercise in tight spaces, but also because the effects of the exercise affect the whole body. More and more people are enjoying themselves.

However, many people want to walk or run not only in the forward direction but also in the backward direction on the walking belt in order to further increase the effectiveness of the exercise, but a treadmill with a walking belt driven in both directions has not been developed yet.

When people walk forward, the heels touch the ground before the toes, so the muscles of the lower body are calf (between the knee and ankle at the back of the human body) → thighs (thigh, ie, between the knee and waist at the front of the body) → shin ( In front of the human body, between the knee and ankle) → thigh posterior (from the back of the human body to the knee and waist) → hip muscles in the order, and also the shoulders and arms of the upper body move forward and backward in the same way Therefore, the movement order of each muscle of the upper body and the muscles to be mainly used are determined in a certain pattern.

On the contrary, when walking backward or running, the toe part touches the ground before the heel. Therefore, the order of the lower body muscles is in the order of the shin → thigh → posterior thigh → calf → hips. In contrast, the opposite movement effect is shown, so if people repeat walking forward (walking) and walking backward (walking), not only can you expect balanced muscle development, but also control the body by improving the body's sense of equilibrium. You can improve your ability to do so.

For this reason, many people want to walk back or run on the treadmill, but since there are no treadmills running backwards, athletes are walking or running backwards on the walking belt. Therefore, when the athlete was turning back and walking or running, when trying to readjust the state of the various consoles attached to the front of the treadmill, the athlete had to turn back again on the moving belt. As a result, the athlete fell frequently or injured in severe cases.

The present invention was devised to improve such a problem, and an object of the present invention is to provide a treadmill in which the walking belt of the treadmill can be driven in both forward and backward directions.

1 is a flow chart illustrating the steps of driving the two-way running machine of the present invention.

Figure 2 is a longitudinal cross-sectional view schematically showing the structure of the main part of the two-way treadmill of the present invention.

In general, when the adult walks at a fast pace, the speed is about 4 to 5 km per hour, and the walking belt of the treadmill driving in all directions is usually driven within the range of 0.1 to 16 km per hour. However, when walking or running backwards on a treadmill, there is a limitation in speed increase unlike in the forward direction, and the inventors surveyed the users of treadmills to find that the maximum speed that can be safely walked back on the treadmill is It was found to be 4-5 km per hour. Therefore, in the present invention, the first feature is that the speed is automatically adjusted so that the running machine does not exceed the range of 0.1 km to 4 km per hour when the treadmill is switched from the forward direction to the backward direction. For this purpose, the present invention is equipped with a program capable of controlling the motor speed within the range of 0.1 to 4 km by receiving feedback from an encoder mounted on an AC servomotor.

In addition, in the case of a treadmill driven in all directions, it is common to have a tilt angle adjustment function in addition to the speed adjustment function of the walking belt. The inclination angle of the walking belt of the treadmill is usually 0 ° to 12 °. However, when the treadmill is driven in the reverse direction, when the inclination angle of the walking belt exceeds 3 ° to 5 °, there are many difficulties in walking or running. This is, for example, the result of falling down without properly controlling the body when descending a steep hillside. Therefore, the present invention automatically adjusts the inclination angle of the walking belt to 3 ° or less when the treadmill is switched from the forward direction to the backward direction, and also in the reverse direction to show the effect of climbing up the hill. The second feature is that the inclination angle of the walking belt is adjusted to -3 ° to + 3 °.

The third feature of the present invention is that the tensioning device is installed at the rear of the front driving roller so that the working belt does not come off from the driving roller due to the tension change of the working belt when the treading belt of the treadmill is driven backward. .

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a flow chart for driving a two-way running machine according to the present invention.

Since the method of driving the treadmill of the present invention in all directions is the same as in the conventional treadmill, a description thereof will be omitted.

When the rear drive key provided in the instrument panel is pressed to drive the treadmill in the rear direction, the rear drive program is started in step 100. Subsequently, the inverted walking button is checked in step 101, and the inverted walking mode is selected in step 102. In step 103, the reverse rotation input button of the servomotor is checked. When it is confirmed that the reverse rotation input button of the servomotor is operating normally, in step 104, the inclination of the walking belt of the treadmill is automatically set to 0 °, and then in step 105, the speed of the servomotor is accelerated. You will be asked to confirm. Selecting this again confirms whether or not to accelerate the speed of the servo motor to the maximum speed (ie, 4 km / h) in step 106. If it is confirmed to accelerate to the maximum speed, a corresponding warning message is displayed in step 107. Display on the operation panel. Step 108 generates servomotor speed data based on the maximum speed selected in step 106.

On the other hand, when the maximum speed is not selected in step 106, the servo motor speed data is generated based on the predetermined speed selected in step 106, going directly to step 108 from step 106.

In addition, when it is not desired to accelerate the speed of the servomotor in step 105, it is checked whether the speed of the servomotor is decelerated in step 109. If this is selected, the speed of the servomotor is checked in step 110. It is again confirmed whether to decelerate to the minimum speed (ie 0.1 km / h). When it is confirmed that the vehicle decelerates to the minimum speed, in step 111, a corresponding warning message is displayed on the operation panel. In step 108, the servo motor speed data is generated based on the lowest speed selected in step 110.

On the other hand, when the minimum speed is not selected in step 110, the servo motor speed data is generated based on the predetermined speed selected in step 110 by going directly to step 108 from step 110.

In addition, when it is not desired to accelerate or decelerate the speed of the servomotor in steps 106 and 110, in step 108 the servomotor speed data is generated based on the original speed.

The speed data generated in step 108 is input to the servomotor in step 112, and then in step 113 the servomotor is driven at the predetermined speed. When the servo motor is driven in the reverse direction according to the speed data of any of the accelerated speed, the decelerated speed, or the original speed as described above, the working belt of the treadmill is driven backward.

In the embodiment illustrated in the figure, speed data based on the accelerated speed selected in step 106 or step 107 or the decelerated speed selected in step 110 or step 111 is generated in the same step 108. However, when the speed of the servomotor is accelerated and when the speed of the servomotor is decelerated, steps 108 and 112 may be performed using separate means that operate separately.

In step 114, feedback processing of the current, speed, and encoder data returned from the servomotor is performed.

On the other hand, as described above, the walking belt of the treadmill is automatically set to the inclination angle of 0 ° in step 104, and in step 105 it is checked whether to increase the inclination angle of the walking belt. Selecting to increase the inclination angle of the walking belt will again confirm in step 116 whether to increase to the highest inclination angle (i.e. 3 °), and if confirming to increase to the highest inclination angle, in step 117 the corresponding warning Causes the message to be displayed on the operator panel. In step 118, the gradient motor is driven based on the highest inclination angle selected in step 116.

On the other hand, when the highest inclination angle is not selected in step 116, the motor moves directly to the step 118 from step 116 to the inclination angle based on the predetermined inclination angle selected in step 116.

In addition, when it is not desired to increase the inclination angle of the walking belt in step 115, it is determined whether the inclination angle of the walking belt is decreased in step 119, and if this is selected, the lowest inclination angle (ie, in step 120) is selected. Will be reduced to -3 °). If it is confirmed that the reduction to the lowest inclination angle (121), the corresponding warning message is displayed on the operation panel. In step 118, the gradient motor is driven based on the lowest inclination angle selected in step 120.

On the other hand, when the lowest inclination angle is not selected in step 120, it goes directly from step 120 to step 118, to drive the inclination angle motor based on the predetermined inclination angle selected in step 120.

In addition, when it is not desired to increase or decrease the inclination angle of the walking belt in steps 115 and 119, there is no need to drive the inclination angle motor, and the walking belt is inclined at the original inclination angle (i.e., 0 °). Will be maintained.

In step 122, the analog data is converted into digital to check the driving of the gradient motor.

In the embodiment illustrated in the figures, driving the tilt angle motor based on the increased tilt angle selected in step 116 or step 117 or the reduced tilt angle selected in step 120 or 121 is the same step 118. However, if necessary, steps 118 and 122 may be performed using separate means that operate individually when the inclination angle is increased and when the inclination angle is decreased.

In order to stop the reverse driving of the servomotor, after checking the stop button in step 123, the driving of the servomotor is stopped in step 124, and at the same time, the time delay start and time flag setting operation are performed. It ends.

In the above described the principle of the present invention through a flow chart for driving the two-way running machine of the present invention, the apparatus and means that can actually implement each step according to the flow chart will be apparent to those skilled in the art. Therefore, when the present invention is understood, it is to be understood not only as driving the treadmill but also as an apparatus for implementing the steps.

2 shows the treadmill of the present invention in the form of a schematic longitudinal section. First, when the walking belt 200 of the treadmill is driven in all directions, the front roller 202 is driven counterclockwise by the rotational force of the motor 201, and thus the walking belt 200 is shown by arrow A in the figure. Will be moved in the direction. The rear roller 203 is a flow roller that is not connected to the motor. The back surface of the walking belt 200 is provided with a support 204 for supporting the weight of the exerciser 205. Typically, a gap of about 2 to 3 mm exists between the back surface of the walking belt 200 and the pedestal 204.

When the walking belt 200 of the treadmill is driven in the rearward direction, the motor 201 rotates in the reverse direction so that the front roller 202 is driven clockwise and the walking belt 200 moves in the direction indicated by the arrow B in the drawing. . At this time, the working belt 200 is in contact with the support at the foot of the exerciser by the weight of the exerciser 205, so the walking belt 200 does not proceed smoothly in the direction of the arrow B and the front roller 202 and the exerciser. A portion of the walking belt 200 positioned between 205 swells upwards to rapidly decrease the coefficient of friction between the walking belt and the front roller below a predetermined value. As a result, a sliding occurs between the walking belt and the front roller, and the walking belt is not driven at a predetermined speed, so that the athlete feels the walking belt stopped and moved, thereby causing the athlete to lose its center and fall. In addition, since the front roller 202 continues to be driven clockwise, excessive tension is applied to a part of the working belt 200 that extends from the rear of the exerciser 205 through the rear roller 203 to the lower portion of the front roller 202. It becomes caught and causes deformation of the walking belt 200.

In the present invention, the tension adjusting device 206 is installed in the middle of the front roller 202 and the pedestal 204 so that this does not occur. The tension adjusting device 206 is composed of a tension roller 207 and the spring 208. When the walking belt 200 swells partially between the front roller 202 and the exerciser 205 while traveling backwards, the spring 208 senses this and presses the tension roller 207 downwards. ) To keep the tension constant. The spring 208 has a structure that can change the pressure on the tension roller 207 by detecting a slight change in tension of the walking belt. In addition, the tension roller 207 is preferably coated with a urethane or the like so that the friction force with the walking belt is increased.

The present invention can drive the treadmill in both directions with a simple key operation through such steps, so that there is no inconvenience that the exerciser has to operate the instrument panel by turning and walking back and turning again, as in the prior art. In the machine, when the servomotor is driven backward, the tension of the working belt is constantly adjusted, and the speed of the servomotor and the inclination angle of the walking belt are readjusted, thereby greatly eliminating the risk of the athlete losing the center and falling and injuring himself. .

Although the present invention has been described with reference to one embodiment, it is obvious that various modifications and changes can be made within the technical details of the present invention and the appended claims. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense of the invention.

Claims (9)

The running machine characterized in that the walking belt can be driven in both directions of the front direction and the rear direction. The treadmill according to claim 1, wherein the treading speed of the servomotor and the inclination angle of the walking belt are readjusted when the treadmill is switched from the forward direction to the backward direction. The treadmill according to claim 1 or 2, wherein a tension adjusting device is provided between the front roller driving the walking belt and the pedestal. In a running machine having a servomotor and a walking belt driven in all directions according to the driving of the servomotor, Means for selecting to drive the working belt also in the rearward direction; Means for selecting to drive the servomotor in a reverse direction in response to the command of the rearward driving selecting means; Means selectable to accelerate the servomotor, Means for inputting the selected speed data to the servomotor when the acceleration speed is selected by the acceleration selection means; Means selectable to decelerate the servomotor, Means for inputting the selected speed data to the servomotor when the deceleration speed is selected by the deceleration selecting means; Means for inputting original speed data into the servomotor when the acceleration selection means or the deceleration selection means are not operated; A servo motor which is driven in a reverse direction by receiving any one of the acceleration speed data, the deceleration speed data, or the original speed data; A working belt driven backward in accordance with the reverse driving of the servomotor; Means for automatically adjusting the inclination angle of the walking belt to 0 ° when the walking belt is switched from the forward driving mode to the backward driving mode; Means for increasing the inclination angle of the walking belt; Means for driving an inclination motor according to the inclination angle increased by the inclination angle increasing means; Means for reducing the inclination angle of the walking belt; Means for driving an inclination motor according to the inclination angle reduced by the inclination angle reducing means; Means for maintaining a constant tension of the walking belt A treadmill driven in both directions, further comprising a. 5. The running machine of claim 4, wherein the tension holding means comprises a roller and a spring. 5. The apparatus according to claim 4, wherein the means for inputting the acceleration speed data into the servomotor, the means for inputting the deceleration speed data into the servomotor, and the means for inputting the original speed data into the servomotor are integrated. A treadmill driven in both directions. 7. The apparatus according to claim 4 or 6, further comprising means for selecting the maximum speed of the servomotor by the command of the acceleration selecting means, and means for selecting the minimum speed of the servomotor by the command of the deceleration selecting means. A treadmill driven in both directions, characterized in that. The running machine of claim 4, wherein the inclination angle increasing means and the inclination angle reducing means of the walking belt are integrated. The method according to claim 4 or 8, further comprising means for selecting the highest inclination angle of the walking belt by the command of the inclination angle increasing means, and means for selecting the lowest inclination angle of the walking belt by the command of the inclination angle reducing means. A treadmill driven in both directions, characterized in that.