KR102498117B1 - Running machine - Google Patents

Abstract

The present invention is intended to correct and prevent the slip phenomenon of a walking belt, and the treadmill of the present invention includes a drive roller and a driven roller formed with a deck board interposed therebetween; a walking belt configured to surround the deck board, the drive roller, and the driven roller and moved by rotation of the drive roller; a power transmission body fastened to a first power transmission part formed on one side of the driving roller and a second power transmission part formed on one side of the driven roller; a clutch formed between the drive roller and the first power transmission unit to selectively connect the drive roller and the first power transmission unit; and a control unit for detecting a slip phenomenon of the walking belt and controlling the clutch to transmit rotational power of the drive roller to the driven roller through the power transmission body when the slip phenomenon is detected.

Description

Front and rear wheel drive treadmill for correction and prevention of slip phenomenon {RUNNING MACHINE}

The present invention relates to a treadmill, and more particularly to a treadmill capable of correcting and preventing a slip phenomenon of a walking belt.

A treadmill is an exercise device for walking or running indoors. When a walking belt wound around two cylindrical rollers is rotated, a user can walk or run in place thereon.

In the case of a conventional treadmill, while the walking belt rotates, the walking belt is pressed by the user's load and comes into contact with the support plate below, thereby generating a load due to friction between the walking belt and the support plate. In particular, when the user's weight is heavy or the treadmill is outdated, the friction coefficient between the walking belt and the support plate increases, and a slip phenomenon occurs due to the increased friction coefficient.

The slip phenomenon means that the walking belt does not circulate smoothly and stops or an uneven area occurs on the walking belt. Since occurrence of slip phenomenon during exercise is also related to safety accidents, it is necessary to correct and prevent slip phenomenon.

In addition, while using the treadmill, the tension of the walking belt may be weakened due to an increase in the walking belt, or a difference in tension between the left and right sides of the walking belt may occur. The weakened tension of the walking belt and the difference in tension between the left and right sides of the walking belt may cause a slip phenomenon and shorten the life of the walking belt, roller, bearing, etc. of the treadmill.

The present invention has been devised in view of the above, and an object of the present invention is to provide a treadmill capable of correcting and preventing the slip phenomenon of a walking belt.

In addition, the object is to provide a treadmill capable of adjusting the total tension of the walking belt and correcting the difference in tension between the left and right sides.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

A treadmill according to the present invention for achieving the above object includes a drive roller and a driven roller formed with a deck board interposed therebetween; a walking belt configured to surround the deck board, the drive roller, and the driven roller and moved by rotation of the drive roller; a power transmission body fastened to a first power transmission part formed on one side of the driving roller and a second power transmission part formed on one side of the driven roller; a clutch formed between the drive roller and the first power transmission unit to selectively connect the drive roller and the first power transmission unit; and a control unit for detecting a slip phenomenon of the walking belt and controlling the clutch to transmit rotational power of the drive roller to the driven roller through the power transmission body when the slip phenomenon is detected.

Each of the first power transmission unit and the second power transmission unit includes two or more gears for changing a rotation ratio between the drive roller and the driven roller.

The control unit may compare the rotational speed of the drive roller with the rotational speed of the driven roller, and detect a slip phenomenon of the walking belt based on a difference between the rotational speeds.

The treadmill of the present invention includes a sensing roller in contact with the walking belt to sense the speed of the walking belt, and a sensing roller control unit for adjusting the position of the sensing roller to adjust the degree of contact between the sensing roller and the walking belt. Further comprising, the control unit compares the rotational speed of the drive roller with the rotational speed of the sensing roller, and detects the slip phenomenon of the walking belt based on the difference between the rotational speeds.

The treadmill of the present invention includes a lower frame accommodating the deck board, the driving roller and the driven roller; It is coupled to the inner surface of the lower frame and further includes an oil supply unit for applying lubricating oil to the inner surface of the walking belt, wherein the control unit uses the time when the user does not use the device when the slip phenomenon is detected. By adjusting the inclination of the lower frame, the lubricant is applied to the inner surface of the walking belt through the oil supply unit.

The oil supply part has an oil inlet inclined higher than the oil pipe at one end in the form of a long pipe, is coupled to the inner surface of the lower frame in parallel with the lower frame, and discharges lubricating oil according to the inclination of the lower frame. an oil barrel; a valve formed at the other end of the oil container to control oil discharge; An oil pipe is inserted between the lower surface of the deck board and the walking belt and applies the lubricating oil discharged through the valve to the walking belt, but the oil pipe includes a plurality of nozzles having different sizes. Including, the size of the nozzles increases as they move away from the oil container.

The treadmill of the present invention is coupled to both sides of the driven roller, and a driven roller position adjusting unit for adjusting the position of the driven roller in the forward and backward directions, and a distance between the driving roller and the driven roller according to the movement of the driven roller position adjusting unit. An adjuster automatically maintains a pressurized state of the power transmission body according to a change in the distance to a current pressurized state, and a tensioner adjusts the tension of the power transmission body.

The driven roller position adjusting unit may include a moving horizontal bar formed in parallel with the driven roller; an adjuster for moving the movable horizontal bar in the forward and backward directions through rotation; a pair of brackets connecting both ends of the movable horizontal bar to both side surfaces of the driven roller and moving the driven roller according to the movement of the movable horizontal bar; a stopper supporting one end of the adjuster penetrating the movable horizontal bar and limiting the movement of the adjuster; a fixed horizontal bar for supporting and fixing the stopper; It further includes an elastic member coupled to the movable horizontal bar and the fixed horizontal bar. The controller may include a distance sensor for detecting a moving distance of the controller; A groove is included to limit the travel distance of the adjuster.

The adjuster may include a pressure roller; a fixed first joint member; a second joint member having one end coupled to the pressure roller and the other end rotatably coupled to the first joint member; One end is fixedly coupled to the movable horizontal bar and the other end is rotatably coupled to the second joint member, and includes a connecting member for moving the pressure roller to correct the length of the power transmission body according to the movement of the movable horizontal bar .

The treadmill of the present invention displays a driven roller angle adjusting unit formed on the other side of the driven roller to correct the difference in left and right tension of the walking belt, the position and angle of the driven roller, the frequency of slip phenomena, and the current amount of oil It further includes an indicator for doing so, and a communication unit for transmitting the information displayed on the indicator to the outside.

The treadmill according to the present invention detects the slip phenomenon of the walking belt in real time and takes measures to correct and prevent the slip phenomenon, thereby overcoming the slip phenomenon and providing a feeling of movement similar to actual walking or running.

In addition, the total tension of the walking belt By adjusting and correcting the tension difference between the left and right sides, the slip phenomenon can be prevented and the life of the treadmill can be extended.

1 is a view showing a treadmill according to a first embodiment of the present invention.
Figure 2 is a block diagram showing a part of the treadmill of Figure 1;
FIG. 3 is a view showing components accommodated in the lower frame 20 of FIG. 1 .
4 is a view showing the oil supply unit 230 according to the first embodiment of the present invention.
5 is a view showing the drive roller 320 and its surrounding components according to the first embodiment of the present invention.
6 and 7 are views showing the driven roller 330 and the driven roller position adjusting unit 370 in detail according to the first embodiment of the present invention.
8 is a detailed view of the driven roller 330 and the adjuster 360 according to the first embodiment of the present invention.
9 is a detailed view of the first regulator 372 according to the first embodiment of the present invention.
10 is a plan view showing in detail the driven roller 330 and the driven roller angle adjusting unit 380 according to the first embodiment of the present invention.
11 is a view showing in detail the sensing roller 410 and the sensing roller adjusting unit 420 according to the first embodiment of the present invention.
12 is a plan view showing the sensing roller 410 and the sensing roller adjusting unit 420 according to the first embodiment of the present invention.
13 is a diagram showing the indicator 50 according to the first embodiment of the present invention.
14 is a view showing a treadmill according to a second embodiment of the present invention.
15 is a view showing the shaft 600 and shaft gears 601 and 603 of FIG. 14 in detail.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

No. 1 Example

1 shows a treadmill according to a first embodiment of the present invention, and FIG. 2 is a block diagram showing a part of the treadmill of FIG. 1 .

As shown in FIG. 1 , the treadmill according to the first embodiment of the present invention includes a front frame 10 and a lower frame 20 .

As shown in FIG. 2, the front frame 10 includes a control panel 110, a control unit 120, a communication unit 130, and a handle 140, or is configured in a form combined with them, and displays other images. It may be configured to further include a monitor (not shown), a speaker (not shown), an input/output port (not shown), and the like.

The control panel 110 provides at least one of buttons and a control screen for controlling operations or functions of the treadmill. For example, the user can adjust the rotational speed of the walking belt 30 and the inclination of the lower frame 20 through the control panel 110 . In addition, the control panel 110 may include a memory (not shown) for storing application programs and data related to the operation or function of the treadmill, and may further include a microphone (not shown) for recognizing a user's voice. there is.

The control unit 120 is for controlling the overall operation of the treadmill and the operation of each component of the treadmill, and may be included inside the control panel 110 or configured in another location.

The communication unit 130 is for wired/wireless communication with an external server, PC, wireless terminal, etc., and is configured to include at least one of a short-range communication module and a wired/wireless Internet module. The short-range communication module is for short-range communication, and includes Bluetooth™, RFID (Radio Frequency Identification), infrared data association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and wireless USB (Wireless Universal Serial Bus) technologies may be used to support short-distance communication. The wired/wireless Internet module may be connected to the Internet using at least one of wired/wireless communication technologies using a wired/wireless modem or Wi-Fi.

The lower frame 20 supports and fixes the front frame 10 under the front frame 10 . In addition, the lower frame 20 accommodates the walking belt 30 and components necessary for its driving, and includes oil supply parts 230 on its left and right inner surfaces, and its rear end is coupled with the indicator 50.

3 and 4, the oil supply unit 230 is for applying lubricant to the inner surface of the walking belt 30, and the front end of the lower frame 20 rises under the control of the control unit 120. When the lower frame 20 is tilted, the lubricating oil is sprayed. Since the component for adjusting the inclination of the lower frame 20 is a well-known conventional technique, a detailed description thereof will be omitted.

The oil supply unit 230 may periodically inject lubricating oil, and may inject lubricating oil even when slipping of the walking belt 30 is detected. The oil supply unit 230 controls the amount of lubricating oil introduced into the oil pipe 235 from the oil container 231 for storing the lubricating oil, an oil pipe 235 for spraying the lubricating oil, or the oil container 231, or It includes a valve 233 to control the flow.

The oil container 231 is coupled to the inner surface of the lower frame 20 in parallel with the lower frame 20, discharges lubricating oil according to the inclination of the lower frame 20, and has an inlet for injecting lubricating oil at the front end ( 232) are included. The oil container 231 is configured in the form of a long pipe, and the inlet 232 is inclined higher than the oil pipe 235.

The oil pipe 235 is coupled to the rear end of the oil container 231 to be inserted between the lower surface of the deck board 310 and the walking belt 30, and the lubricating oil discharged from the oil container 231 is transferred to the walking belt ( 30) is applied. The oil pipe 235 includes a plurality of injection holes 236 and 238 having different sizes, and the size of the injection holes 236 and 238 increases as the distance from the oil container 231 increases. Since the size of the nozzles 236 and 238 increases as they move away from the oil container 231, the amount of lubricating oil injected from the nozzles 236 and 238 is similar to each other.

The deck board 310 is accommodated inside the lower frame 20 and supported and fixed by the lower frame 20, and the driving roller 320 and the driven roller 330 interpose the lower frame with the deck board 310 therebetween. (20) is placed inside. The drive roller 320 is located in front of the deck board 310 and rotates by power provided from the motor 210 . The driven roller 330 is located at the rear of the deck board 310 and is configured to receive power through a separate power transmission unit 340 without directly receiving power from the motor 210 . The power transmission body 340 may be composed of any one of a belt, a chain, and a propeller shaft that can transmit power, and the position control method of the driven roller 330 can be a rotation method using a belt or chain and a straight method using a propeller shaft. do. A case in which the power transmission body 340 is formed of a belt and the driven roller position adjusting unit 370 is of a rotary type will be described as an example. It is preferable that the driving roller 320 and the driven roller 330 have the same diameter, and their diameter is larger than the thickness of the deck board 310 .

As shown in Figures 5 and 6, the walking belt 30 is configured to surround the deck board 310, the driving roller 320 and the driven roller 330, the walking belt 30 is the driving roller 320 ) Moved by the rotation of the driven roller 330 is rotated by the movement of the working belt (30). The walking belt 30 of the present invention is configured to pass through the upper and lower surfaces of the deck board 310 at regular intervals (15 to 20 mm) without contact with the deck board 310. However, when a load is applied to the walking belt 30, only a part of the inner surface of the walking belt 30 comes into contact with the deck board 310.

The first power transmission unit 323 and the second power transmission unit 333 may be composed of pulleys or gears. For example, when the power transmission unit 340 is a belt, the first power transmission unit 323 and the second power transmission unit 333 are composed of pulleys, and when the power transmission unit 340 is a propeller shaft, the first The power transmission unit 323 and the second power transmission unit 333 are composed of gears. The first embodiment shows a case in which the power transmission body 340 is a belt and the first power transmission part 323 and the second power transmission part 333 are made of pulleys.

The first power transmission unit 323 is connected to one side of the driving roller 320, and the clutch 321 is connected to the driving roller 320 to selectively connect the driving roller 320 and the first power transmission unit 323. ) and the first power transmission unit 323. The clutch 321 may transmit or block rotational power of the drive roller 320 to the first power transmission unit 323 . When the rotational power of the driving roller 320 is transmitted to the first power transmission unit 323, the rotation of the first power transmission unit 323 causes the power transmission body 340 to move, and the second power transmission unit 333 also moves. rotate together.

The second power transmission unit 333 is connected to one side of the driven roller 330, and a speed sensor 331 for detecting the rotational speed of the driven roller 330 is connected to the driven roller 330 and the second power transmission. It is formed between the parts 333. The speed sensor 331 may be composed of an encoder or another rotation sensor for sensing the rotation speed of the driven roller 330 . A support 335 for supporting the second power transmission unit 333 is formed on the outer side of the second power transmission unit 333, and a driven roller angle adjusting unit 380 is formed on the other side of the driven roller 330. is formed

The first power transmission unit 323 and the second power transmission unit 333 each include two or more gears or two or more wheels having different diameters to change the rotation ratio, and the power transmission unit 340 The wheels of the first power transmission unit 323 and the wheels of the second power transmission unit 333 are also formed to have different diameters. For example, for a quick reaction of the driven roller 330 when the drive roller 320 rotates, the diameter of the first wheel of the second power transmission unit 333 is larger than that of the first wheel of the first power transmission unit 323. It is desirable to make it large.

The power transmission body 340 is fastened to the first power transmission unit 323 and the second power transmission unit 333 . In order to adjust the tension of the power transmission body 340 and increase the adhesion between the power transmission body 340 and the first and second pulleys 323 and 333, the first power transmission unit 323 and the second power transmission Between the parts 333, tensioners 350 and an adjuster 360 are formed below the power transmission body 340. The tensioner 350 is located close to the first power transmission unit 323, and the adjuster 360 is located near the second power transmission unit 333. As the tension of the power transmission body 340 increases and the degree of adhesion between the power transmission body 340 and the first and second pulleys 323 and 333 increases, the power is transmitted from the first power transmission unit 323 to the second power transmission unit 333. power loss can be reduced.

As shown in FIGS. 6 and 7, the driven roller position adjusting unit 370 is for changing the position of the driven roller 330 in the forward and backward directions to adjust the tension of the walking belt 30, and is different from the conventional method. Likewise, the left tension and the right tension of the walking belt 30 can be adjusted simultaneously rather than separately.

The driven roller position adjusting unit 370 includes a movable horizontal bar 371, a first adjuster 372 in the form of a ball screw, a pair of brackets 373, a first stopper 374, and a first fixed horizontal bar. (377) and an elastic member (378).

The moving horizontal bar 371 is formed under the driven roller 330 in parallel with the driven roller 330 and is configured to be movable in the forward and backward directions.

The first adjuster 372 is formed to pass through the center of the moving horizontal bar 371, and a distance sensor 376 or a position sensor for detecting the position of the first adjuster 372 is formed at its end. The first controller 372 moves the movable horizontal bar 371 forward and backward through rotation by a motor or a user. The movable horizontal bar 371 is moved by a user's manipulation or a motor (not shown) It is connected to and automatically moves the moving horizontal bar 371 according to the control of the control unit 120.

8, the bracket 373 connects both ends of the movable horizontal bar 371 to both sides of the driven roller 330, and the driven roller 330 moves in the direction opposite to the moving direction of the movable horizontal bar 371. ) is moved. For example, when the movable horizontal bar 371 moves forward, the bracket 373 pushes the driven roller 330 backward by a lever effect. At this time, the center of the bracket 373 functions as a rotating shaft, and the adjuster 360 moves downward by the moving distance of the driven roller 330 in conjunction with the moving horizontal bar 371 . Conversely, when the movable horizontal bar 371 moves backward, the bracket 373 pushes the driven roller 330 forward, and the adjuster 360 interlocks with the movable horizontal bar 371 to move the driven roller 330 forward. It moves to pressurize the power transmission body 340 by the moving distance.

The first stopper 374 is configured to support one end of the first adjuster 372 penetrating the moving horizontal bar 371 and limit the movement of the first adjuster 372 . In addition, the first stopper 374 is configured to be rotatable at a predetermined angle with respect to the rotation axis 375 parallel to the first fixed horizontal bar 377, which means that the movable horizontal bar 371 does not move in a straight line and the bracket This is because it moves with the center of (373) as the axis of rotation.

In addition, as shown in FIG. 9, in a state where the groove A of the first adjuster 372 is inserted into the first stopper 374, the first adjuster 372 is allowed to move within a certain range. When walking or running on the belt 30, when the walking belt 30 goes down as much as the space between the walking belt 30 and the deck board 310, the driven roller 330 and the moving horizontal bar 371 also move in conjunction with the While the juster 360 also moves, the current pressurized state of the power transmission body 340 is automatically maintained. Then, the driven roller 330, the moving horizontal bar 371, and the adjuster 360 return to their original positions by the elastic member 378. For example, when a load is applied to the walking belt 30, the driven roller 330 moves forward as much as the space between the walking belt 30 and the deck board 310 by the tension of the walking belt 30 and the movable horizontal bar 371 tries to move backward. At this time, the driven roller 330 and the movable horizontal bar 371 are moved by the width of the groove A of the first adjuster 372 allowed inside the first stopper 374. ) can be moved.

The first fixing horizontal bar 377 is coupled and fixed to the left and right inner surfaces of the lower frame 20 and supports the first stopper 374 . The elastic member 378 is coupled to the movable horizontal bar 371 and the first fixed horizontal bar 377 to maintain a certain distance between the movable horizontal bar 371 and the first fixed horizontal bar 377, together with To prevent the stretching of the walking belt 30 to extend the life.

The adjuster 360 automatically maintains the pressurized state of the power transmission body 340 according to the change in the distance between the drive roller 320 and the driven roller 330 according to the movement of the driven roller position adjusting unit 370 at the current pressurized state. , In particular, it is configured to press the power transmission body 340 in conjunction with the moving horizontal bar 371. The adjuster 360 includes joint-shaped first and second joint members 361 and 362, a pressure roller 363, and a connecting member 364.

Since the first coupling member 361 is coupled and fixed to the first fixing horizontal bar 377, it does not move. However, the second joint member 362 has one end coupled to the pressure roller 363 and the other end rotatably coupled to the first joint member 361 .

The connecting member 364 has one end fixedly coupled to the movable horizontal bar 371 and the other end rotatably coupled to the second joint member 362, and the power transmission body 340 according to the movement of the movable horizontal bar 371. ) or move the pressure roller 363 away from the power transmission belt 340. For example, when the moving horizontal bar 371 moves forward, the connecting member 364 pushes the second joint member 362 forward, and as a result, the pressure roller 363 moves downward to move the power transmission body ( 340) away from it. When the moving horizontal bar 371 moves forward, as the driven roller 330 moves backward, the tension of the power transmission body 340 becomes strong and can be cut off, so the pressure roller 363 moves downward to move the power transmission body ( 340) and away from it. Conversely, when the moving horizontal bar 371 moves backward, the connecting member 364 pulls the second joint member 362 backward, and as a result, the pressure roller 363 presses the power transmission body 340 while rising. do.

As shown in FIG. 10, the driven roller angle adjusting unit 380 is formed on the other side of the driven roller 330 to correct the difference in left and right tension of the walking belt 30. The driven roller angle adjusting unit 380 includes a holder 381, a screw 382, a knob 383, and a distance sensor 384. In addition, the driven roller angle adjusting unit 380 is a scale display device (not shown ) may further include.

The holder 381 is for supporting the screw 382, the bottom of the holder 381 is coupled to the bracket 373, and both side walls of the holder 381 are coupled to both ends of the screw 382, respectively.

The screw 382 passes through the shaft 337 extending from the other side of the driven roller 330, and both ends thereof are rotatably formed while being supported on both side walls of the holder 381, respectively. The rotation of the screw 382 causes the shaft 337 to move forward and backward.

The knob 383 is coupled to one end of the screw 382 and rotates the screw 382 . The knob 383 is rotated by a user or electric power, and as a result, the shaft 337 is moved while the screw 382 rotates together.

The distance sensor 384 is coupled to the other end of the screw 382 and detects the moving distance of the shaft 337. The distance sensor 384 may be composed of an encoder or other rotation sensor that detects the moving distance of the shaft 337 based on the rotation direction and number of rotation of the screw 382 .

In the case of using the driven roller angle adjusting unit 380 having such a structure, since the outer side of the second power transmission unit 333 is coupled with a pivot 336, the driven roller angle adjusting unit 380 is a shaft ( 337 is moved forward or backward, the angle of the driven roller 330 is adjusted. Thereby, by correcting the tension difference between the left and right of the walking belt 30, the belt pull phenomenon is prevented.

As shown in FIG. 11, the sensing roller 410 is configured to contact the inner surface or the outer surface of the walking belt 30 under the deck board 310 to sense the speed of the walking belt 30. do. Sensing roller 410 includes a speed sensor 415 for detecting the rotational speed of the sensing roller 410 at one end thereof. The speed sensor 415 may be composed of an encoder or other rotation sensor for sensing the rotation speed of the sensing roller 410 .

As shown in FIGS. 11 and 12 , the sensing roller adjusting unit 420 adjusts the position of the sensing roller 410 to adjust the degree of contact between the sensing roller 410 and the working belt 30 . To this end, the sensing roller control unit 420 includes a screw-type second adjuster 421, a connecting bar 422, a pair of brackets 424, a second stopper 425, and a second fixed horizontal bar 426. , and includes an elastic member 427.

The second regulator 421 passes through the lower portion of the connecting bar 422 and one end thereof is coupled to the second stopper 425 . The second adjuster 421 is rotated by a user or electric power, and as a result, the lower portion of the connecting bar 422 can be moved forward and backward.

The upper end of the connecting bar 422 is coupled with both ends of the sensing roller 410 to support the sensing roller 410, and the bracket 424 is connected to the middle of the connecting bar 422 and the first fixed horizontal bar 377. connect Since one end of the bracket 424 is rotatably coupled to the middle portion of the connecting bar 422 and the other end of the bracket 424 is fixedly coupled to the first fixed horizontal bar 377, the connecting bar 422 is connected to the bracket 424. ) can be rotated. That is, when the lower portion of the connecting bar 422 is moved by the rotation of the second adjuster 421, the connecting bar 422 rotates based on the bracket 424, and the upper end of the connecting bar 422 also follows a curved track. will move along Due to this, the sensing roller 410 adjusts the degree of adhesion with the walking belt 30 while the vertical position is changed.

The second stopper 425 supports one end of the second adjuster 421 penetrating the connection bar 422 and restricts the movement of the second adjuster 421 . The second stopper 425 is configured to be rotatable about a rotational axis 428 parallel to the second fixed horizontal bar 426, which means that the lower part of the connecting bar 422 does not move in a straight line but moves along a curved trajectory. because it does

The second fixing horizontal bar 426 is coupled and fixed to the left and right inner surfaces of the lower frame 20 and supports the second stopper 425 . The elastic member 427 is coupled to the first fixed horizontal bar 377 and the connecting bar 422 to maintain a predetermined distance between the first fixed horizontal bar 377 and the connecting bar 422 .

13 shows an example of an indicator 50 of the present invention.

As shown in FIG. 13 , the indicator 50 indicates the state of some components of the treadmill and is formed at the rear end of the lower frame 20 . The indicator 50 includes a plurality of display windows 51, 52, 53, and 54, and the number or position of the display windows can be variously modified.

The first display window 51 shows the angle of the driven roller 330 based on the value detected by the distance sensor 384, and the second display window 52 shows the walking speed based on the number of revolutions of the first adjuster 372. The tension of the belt 30 is expressed as a numerical value. In the prior art, it was not easy to adjust the tension because the current tension could not be checked when adjusting the tension of the walking belt, but the current tension can be checked through the second display window 52.

In addition, the third display window 53 displays the current running state of the walking belt 30. That is, when a slip phenomenon occurs, a grade of high, medium, or low is displayed according to the occurrence frequency. Through this, it is used as a basis for determining whether to adjust the tension of the walking belt 30, to inject oil, or to replace the walking belt 30. The fourth display window 54 may indicate the remaining amount of lubricating oil in the oil container 231 or display a warning signal.

The operation of the treadmill according to the first embodiment of the present invention configured as described above will be described below.

The control unit 120 detects the slip phenomenon of the walking belt 30, and can detect the slip phenomenon using any one of the following methods.

Detection method 1.

The control unit 120 compares the rotational speed of the drive roller 320 and the rotational speed of the driven roller 330, and determines whether or not the slip phenomenon of the walking belt 30 has occurred based on the difference between the two rotational speeds. . For example, the control unit 120 determines that a slip phenomenon has occurred when the difference between the two rotational speeds is out of a preset range. Here, the rotational speed of the driving roller 320 may be measured from the motor 210 or may be measured by a separate speed sensor (not shown) that detects the rotational speed of the driving roller 320 . The rotational speed of the driven roller 330 is measured by the speed sensor 331 .

Detection method 2.

The control unit 120 may compare the rotational speed of the driving roller 320 and the rotational speed of the sensing roller 410, and determine whether a slip phenomenon has occurred based on the difference between them. For example, the control unit 120 determines that a slip phenomenon has occurred when the difference between the two rotational speeds is out of a preset range. Here, the rotational speed of the sensing roller 410 is measured by the speed sensor 415 .

Detection method 3.

The control unit 120 compares three rotational speeds, that is, the rotational speed of the driving roller 320, the rotational speed of the driven roller 330, and the rotational speed of the sensing roller 410, respectively, and the slip phenomenon occurs based on the results. occurrence can be determined. For example, the control unit 120 determines that a slip phenomenon has occurred if even one of the differences between the three rotational speeds is out of a preset range.

Subsequently, when the slip phenomenon of the walking belt 30 is detected, the control unit 120 executes a corrective action. Corrective measures include drive of the clutch 321 (rotation of the power transmission body 340), injection of lubricating oil from the oil supply unit 230, tension adjustment of the walking belt 30 by the driven roller position control unit 370, and first power At least one of gear ratio adjustment of at least one of the transmission unit 323 and the second power transmission unit 333 is performed.

As an essential correction measure, it is preferable that the driving of the clutch 321 and the injection of the lubricating oil of the oil supply unit 230 are executed together. That is, when the slip phenomenon of the walking belt 30 is detected, the control unit 120 controls the clutch 321 to transmit the rotational power of the drive roller 320 to the driven roller 330 through the power transmission body 340, and In addition, after determining when the user does not use the treadmill, lubricating oil is applied to the walking belt 30 through the oil supply unit 230 by adjusting the inclination of the lower frame 20 . When the drive roller 320 and the driven roller 330 rotate together, the slip phenomenon is improved because the walking belt 30 rotates stably. In addition, when the lubricating oil is sprayed on the walking belt 30, the slip phenomenon is improved because the frictional force between the walking belt 30 and the deck board 310 is reduced.

As an additional correction measure, the tension adjustment of the walking belt 30 and the correction of the left and right tension difference of the walking belt 30 may be selectively executed by the control unit 120 or manually executed by the user.

No. 2 Example

14 and 15, the treadmill according to the second embodiment of the present invention is mostly the same as the first embodiment, but includes first and second power transmission units 623 and 633, a power transmission body 600, The configuration and structure of the driven roller position adjusting unit 770 is different from that of the first embodiment, and the tensioners and adjusters of the first embodiment are excluded. Descriptions of components identical to those of the first embodiment are omitted.

When the power transmission unit 600 according to the second embodiment is a propeller shaft, the first power transmission unit 623 and the second power transmission unit 633 are each composed of gears. The power transmission body 600 includes first and second shaft gears 601 and 603 respectively formed at both ends thereof. The first and second shaft gears 601 and 603 cross and engage the first power transmission unit 623 and the second power transmission unit 633 at 90 degrees, respectively, and the first power transmission unit 623 and the second power transmission unit It rotates with part 633. In particular, the second shaft gear 603 has a certain length so as to maintain a coupled state with the second power transmission unit 633 when the driven roller 330 moves back and forth. A plurality of holders 610 supporting the power transmission body 600 are formed to enable stable rotation of the power transmission body 600 .

In addition, the gear of the second power transmission unit 633 and the second shaft gear 603 are engaged with each other at a predetermined interval so that the angle of the driven roller 330 can be adjusted.

The driven roller position adjusting unit 770 according to the second embodiment includes a moving horizontal bar 771, a first controller 772 in the form of a ball screw, a pair of brackets 373, a first stopper 374, a second It includes an adjuster 774, a guiding bar 775, and a compression spring 778.

The moving horizontal bar 771 is configured to be movable in the forward and backward directions in parallel with the driven roller 330 under the driven roller 330 .

The first adjuster 772 is formed to pass through the center of the movable horizontal bar 371, and at its end, a distance sensor 376 or a position sensor for detecting the position of the first adjuster 772 and a movable horizontal bar ( 371) includes a groove (A) that limits the movement distance.

The second adjuster 774 is coupled to the fixed horizontal bar 377 and is configured to support a guiding bar 775. The guiding bar 775 guides the movement path so that the moving horizontal bar 771 can move in the forward and backward directions in parallel. The compression spring 778 is formed around the guiding bar 775 to provide elasticity so that the movable horizontal bar 771 returns to its original position.

In the above, the present invention has been shown and described in relation to preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as shown and described. Rather, it will be appreciated by those skilled in the art that many changes and modifications may be made to the present invention without departing from the spirit and scope of the appended claims.

10: front frame 20: lower frame
30: walking belt 50: indicator
110: control panel 120: control unit
130: communication unit 140: handle
210: motor 230: oil supply unit
231: oil bottle 235: oil pipe
233: valve 310: deck board
320: drive roller 321: clutch
323, 623: first power transmission unit 330: driven roller
331: speed sensor 333, 633: second power transmission unit
335: support 340, 600: power transmission body
350: tensioner 360: adjuster
361, 362: first and second joint members 363: pressure roller
364: connecting member 370, 770: driven roller position adjusting unit
371, 771: moving horizontal bar 372, 772: first regulator
373: bracket 374: first stopper
377: first fixed horizontal bar 378, 427: elastic member
380: driven roller angle adjusting unit 381: holder
382: screw 383: knob
384: distance sensor 410: sensing roller
415: speed sensor 420: sensing roller control unit

Claims (17)

Drive rollers and driven rollers formed with the deck board interposed therebetween;
a walking belt configured to surround the deck board, the drive roller, and the driven roller and moved by rotation of the drive roller;
a power transmission body fastened to a first power transmission part formed on one side of the driving roller and a second power transmission part formed on one side of the driven roller;
a clutch formed between the drive roller and the first power transmission unit to selectively connect the drive roller and the first power transmission unit;
a driven roller position adjusting unit that is coupled to both side surfaces of the driven roller and adjusts the position of the left and right sides of the driven roller in the forward and backward directions at the same time;
A control unit for detecting a slip phenomenon of the walking belt and controlling the clutch to transmit rotational power of the drive roller to the driven roller through the power transmission body when the slip phenomenon is detected,
An adjuster for correcting the length of the power transmission body according to a change in the distance between the driving roller and the driven roller according to the movement of the driven roller position adjusting unit and a tensioner for adjusting the length and tension of the power transmission body A treadmill further comprising at least one of According to claim 1,
Each of the first power transmission unit and the second power transmission unit includes two or more gears for changing a rotation ratio between the drive roller and the driven roller. According to claim 1,
The control unit compares the rotational speed of the drive roller with the rotational speed of the driven roller, and detects a slip phenomenon of the walking belt based on the difference between the rotational speeds. According to claim 1,
Further comprising a sensing roller in contact with the walking belt to sense the speed of the walking belt,
The control unit compares the rotational speed of the drive roller with the rotational speed of the sensing roller, and detects a slip phenomenon of the walking belt based on the difference between the rotational speeds. According to claim 4,
The treadmill according to claim 1, further comprising a sensing roller adjusting unit for adjusting a position of the sensing roller to adjust a degree of adhesion between the sensing roller and the walking belt. According to claim 1,
a lower frame accommodating the deck board, the drive roller, and the driven roller;
It is coupled to the inner surface of the lower frame and further comprises an oil supply unit for applying lubricating oil to the inner surface of the walking belt,
The control unit, when the slip phenomenon is detected, adjusts the inclination of the lower frame and applies lubricant to the inner surface of the walking belt through the oil supply unit. According to claim 6,
The oil supply unit,
An oil container having an oil inlet inclined higher than the oil pipe at one end in the form of a long pipe, coupled to the inner surface of the lower frame in parallel with the lower frame, and discharging lubricating oil according to the inclination of the lower frame;
a valve formed at the other end of the oil container to control oil discharge;
An oil pipe inserted between the lower surface of the deck board and the walking belt and applying the lubricating oil discharged through the valve to the walking belt,
The oil pipe includes a plurality of nozzles having different sizes, and the nozzles have a larger size as the distance from the oil container increases. delete According to claim 1,
The driven roller position adjusting unit,
a moving horizontal bar formed in parallel with the driven roller;
a controller that is rotated by a motor or a user to move the moving horizontal bar forward and backward;
and a pair of brackets connecting both ends of the movable horizontal bar to both side surfaces of the driven roller and moving the driven roller according to the movement of the movable horizontal bar. According to claim 9,
The driven roller position adjusting unit,
a stopper supporting one end of the adjuster penetrating the movable horizontal bar and limiting the movement of the adjuster;
a fixed horizontal bar for supporting and fixing the stopper;
The treadmill further comprises an elastic member coupled to the movable horizontal bar and the fixed horizontal bar. According to claim 9,
the controller,
a distance sensor for sensing a moving distance of the controller;
A treadmill comprising a groove defining a moving distance of the moving horizontal bar. delete According to claim 9,
The adjuster,
pressure roller;
a fixed first joint member;
a second joint member having one end coupled to the pressure roller and the other end rotatably coupled to the first joint member;
One end is fixedly coupled to the movable horizontal bar and the other end is rotatably coupled to the second joint member, and the length of the power transmission body is corrected according to a change in the distance between the drive roller and the driven roller according to the movement of the movable horizontal bar. and a connecting member for moving the pressure roller to maintain the current pressure state. According to claim 1,
Further comprising a driven roller angle adjusting unit formed on the other side of the driven roller to correct the difference in left and right tension of the walking belt,
The angle adjustment unit,
with screw;
A treadmill comprising a distance sensor. According to claim 1,
An indicator for displaying the position and angle of the driven roller, the frequency of slip phenomenon, and the current amount of oil;
The treadmill characterized in that it further comprises a communication unit for transmitting the information displayed on the indicator to the outside. According to claim 1,
The power transmission system,
shaft;
It includes first and second shaft gears formed at both ends of the shaft and rotating while crossing the first power transmission unit and the second power transmission unit, respectively,
The second shaft gear has a certain length to maintain a state coupled to the second power transmission unit when the driven roller moves back and forth,
The first power transmission unit and the second power transmission unit each consist of a gear,
Treadmill, characterized in that the gear of the second power transmission unit and the second shaft gear are engaged with each other at a predetermined interval so that the angle of the driven roller is adjustable. According to claim 1,
The driven roller position adjusting unit,
a moving horizontal bar formed in parallel with the driven roller;
an adjuster for moving the moving horizontal bar in the forward and backward directions;
a guiding bar for guiding a moving path of the moving horizontal bar;
and a compression spring formed around the guiding bar to provide elasticity so that the movable horizontal bar returns to its original position.

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