KR102647317B1 - Rehabilitation exercise machine - Google Patents

Abstract

The present invention relates to a rehabilitation exercise device, and more specifically, to unwind or wind a wire by rotating a drive motor based on a weight value set by the user, but to lower the weight value when the wire is lowered compared to when it is ascended. It relates to a rehabilitation exercise device that is particularly useful for rehabilitation exercise for disabled people because it can be set up and is equipped with a safety locking unit to double prevent safety accidents.

Description

Rehabilitation exercise machine}

The present invention relates to a rehabilitation exercise device, and more specifically, to unwind or wind a wire by rotating a drive motor based on a weight value set by the user, but to lower the weight value when the wire is lowered compared to when it is ascended. It relates to a rehabilitation exercise device that is particularly useful for rehabilitation exercise for disabled people because it can be set up and is equipped with a safety locking unit to double prevent safety accidents.

Recently, the number of people who want to take care of their health through home training at home rather than at exercise facilities such as gyms, training centers, or sports centers has been increasing. Accordingly, various home training equipment has been manufactured and sold, expanding the options of consumers who want suitable exercise. It is becoming.

In addition, although it is mainly for rehabilitation exercise, training equipment for disabled people with congenital or acquired disabilities is also manufactured and sold, so that disabled people who have a higher need for exercise that can be performed frequently at home compared to non-disabled people can also use it at home. It can be used for training.

However, it is recommended that disabled people perform exercises appropriately programmed according to their disability type, but home training equipment sold on the market does not satisfy this requirement.

In particular, the risk of accidents during exercise is higher for the disabled than for the general public due to physical limitations, so home training equipment for the disabled must ensure safety during exercise as a top priority, but only focuses on convenience of use for the disabled to ensure stability during exercise. There is no sufficient guarantee.

KR10-1285155 (registration number) 2013.07.05.

In the present invention, the wire is unwound or wound to correspond to the weight value set by the user, and the unwinding or winding of the wire is determined according to the length of the exposed wire, so that safety accidents can be prevented even in the event of a sudden loss of strength during the wire unwinding operation. The purpose is to provide rehabilitation exercise equipment.

In the present invention, the weight value is calculated using the tension that the force applied by the user acts on the wire, and based on this, the drive motor is rotated to unwind or wind the wire, and the driving force of the drive motor is applied by a worm gear, The purpose is to provide rehabilitation exercise equipment that is accurately driven without the driving force of the driving motor being variable due to the force applied by the user.

In addition, the purpose of the present invention is to provide a rehabilitation exercise device that increases or decreases the driving force of the drive motor depending on how much the force applied by the user exceeds the set weight, so that the user can feel a similar feeling as when exercising using weights. there is.

In addition, the present invention allows the weight value to be set lower when the wire is lowered compared to when it rises, and is equipped with a safety locking unit to double prevent safety accidents, so it is particularly useful for rehabilitation exercise for disabled people with physical disabilities. The purpose is to provide equipment.

The present invention includes a base frame 100; Column frames 110 extending from the base frame 100 to intersect the longitudinal direction of the base frame 100; A hanger frame 120 fixed across the pillar frame 110; A driving unit 130 installed on one side of the base frame 100 to wind or unwind the wire 131; An exercise unit 200 to which the end of the wire 131 is connected; a control unit that determines a driving amount of the driving unit 130 so that the wire 131 is wound or unwound corresponding to a set weight value; An interface module that receives a set weight to be exercised from the user and transmits it to the control unit, wherein the control unit controls the drive unit 130 according to the length of the wire 131 exposed from the drive unit 130. Determine the forward or reverse direction of rotation.

Additionally, the control unit of the present invention can set different weight values when the driving unit 130 rotates in the forward and reverse directions.

In addition, the drive unit 130 of the present invention includes a drive motor 132, a worm 133 axially coupled to the rotation axis of the drive motor 132, and meshing with the worm 133 to drive the drive. It includes a worm wheel 134 that is rotated to have a rotation axis that intersects the rotation axis of the motor 132, and a drive reel 135 that is coupled to the rotation axis of the worm wheel 134 and rotates and on which the wire 131 is wound. .

In addition, the present invention further includes a load cell 121 installed on one side of the hanger frame 120, and the control unit determines that the weight value calculated from the measurement value of the load cell 121 exceeds the set weight value. If the calculated weight value is less than the set weight value, the drive motor 132 is driven in the forward direction, and if the calculated weight value is less than the set weight value, the drive motor 132 is driven in the reverse direction. If it is not driven or driven in the forward direction, or if the calculated weight value exceeds the set weight value and the drive motor 132 is not driven or driven in the reverse direction, the driving force of the drive motor 132 is corrected.

In addition, when the weight value calculated from the measurement value of the load cell 121 exceeds the set weight value, the control unit of the present invention increases the forward driving force by an amount corresponding to the exceeded weight value to control the drive motor 132. Run it.

In addition, the present invention includes first and second bar-shaped guide shafts 301 and 302 coupled to the hanger frame 120 and spaced apart from each other; A sliding block 310 surrounding the first guide shaft 301; A wire fixing block 320 for fixing the wire 131 on one side of the sliding block 310; A back plate 330 coupled to the sliding block 310 or the wire fixing block 320; A ratchet block 340 rotatably coupled to the back plate 330 and formed with a pawl 341 having a protruding end; A spring 342 whose both ends are coupled to the front of the ratchet block 340 and the back plate 330, respectively; A safety locking unit 300 including a ratchet guide 350 coupled to the second guide shaft 302 and formed vertically with a plurality of inclined protrusions 351 protruding toward the ratchet block 340. Including, the pole 341 is caught on the inclined protrusion 351 to prevent the wire 131 from moving downward.

In addition, the safety locking unit 300 of the present invention includes a first reversal block 370 installed on the first guide shaft 301 and a second reversal block 360 installed on the second guide shaft 302. It further includes, wherein the first reversal block 370 and the second reversal block 360 have inclined surfaces formed in directions facing each other, and the first reversal block ( 370) or a reversal wheel 343 in contact with the inclined surface of the second reversal block 360 is coupled to one surface of the ratchet block 340, so that the sliding block 310 rises and the reversal wheel 343 is When contacting the inclined surface of the second reversal block 360, the ratchet block 340 rotates in the second direction, and the sliding block 310 rises further so that the ratchet block 340 rotates further in the second direction. When the spring 342 or an extension of the spring 342 deviates from the rotation axis of the ratchet block 340, the ratchet block 340 is fixed in a rotated state in the second direction, and the sliding block 310 When this descends and the inversion wheel 343 comes into contact with the inclined surface of the first inversion block 370, the ratchet block 340 rotates in the first direction, and the sliding block 310 further descends to touch the ratchet block. When (340) is further rotated in the first direction and the spring 342 or an extension of the spring 342 deviates from the rotation axis of the ratchet block 340, the ratchet block 340 is rotated in the first direction. It is fixed in the state.

In addition, the safety locking unit 300 of the present invention is coupled to the back plate 330 to prevent the ratchet block 340 from rotating more than a set angle in the first direction. A first stopper 345 that contacts the ratchet block 340 when rotated at a set angle; When the ratchet block 340 is coupled to the back plate 330 or the wire fixing plate 321 to prevent the ratchet block 340 from rotating more than a set angle in the second direction, the ratchet block 340 is rotated at a set angle in the second direction. It includes a second stopper 344 in contact with the ratchet block 340.

In the present invention, the wire 131 is unwound or wound to correspond to the weight value set by the user, and the unwinding or winding of the wire 131 is determined according to the length of the exposed wire 131, so the unwinding operation of the wire 131 It has the effect of preventing safety accidents even in case of sudden loss of strength during exercise.

In the present invention, the weight value is calculated using the tension that the force applied by the user acts on the wire 131, and based on this, the drive motor 132 is rotated to unwind or wind the wire 131, and the drive motor 132 ), the driving force is applied by the worm gear, so that the driving force of the drive motor 132 is not varied due to the force applied by the user and is accurately driven.

In addition, the present invention increases or decreases the driving force of the driving motor 132 depending on how much the force applied by the user exceeds the set weight, so that the user can feel a similar feeling as when exercising using weights.

In addition, in the present invention, the weight value can be set lower when the wire 131 is lowered compared to when it is raised, and safety accidents can be double prevented by being provided with a safety locking unit 300, so rehabilitation of disabled people with physical disabilities It has a particularly useful effect during exercise.

Figure 1 is a perspective view of a rehabilitation exercise device according to an embodiment of the present invention.
Figure 2 is a side view of a rehabilitation exercise device according to an embodiment of the present invention.
Figure 3 is a perspective view of the main part of a drive unit of a rehabilitation exercise device according to an embodiment of the present invention.
Figure 4 is a schematic perspective view of the safety locking unit of a rehabilitation exercise device according to an embodiment of the present invention.
Figure 5 is a diagram illustrating the use state of the rehabilitation exercise equipment when unwinding the wire according to an embodiment of the present invention.
Figure 6 is a diagram illustrating a state of use when winding a wire of a rehabilitation exercise device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

As shown in Figures 1 to 6, the present invention includes a base frame 100, a pillar frame 110 extending from the base frame 100 to intersect the longitudinal direction of the base frame 100, and a pillar frame. A hanger frame 120 extends from 110 to be spaced apart from the base frame 100 so as to cross the longitudinal direction of the column frame 110, and is installed on one side of the base frame 100 to wind or wind the wire 131. The shipped drive unit 130, the load cell 121 installed on one side of the hanger frame 120, and the measured value on the load cell 121 are installed on one side of the load cell 121 when tension is applied to the wire 131. A tension transmission pulley 122 that changes the direction of movement of the wire 131 so that this occurs, and is provided on one side of the base frame 100 to perform muscle strength exercise using the wire 131, An exercise unit 200 whose ends are connected, a control unit that determines the driving amount of the drive unit 130 so that the wire 131 is wound or unwound at a set speed, and a control unit that receives the set weight to be exercised from the user and sends it to the control unit. It is composed of a transmitting interface module.

The base frame 100 serves as a mounting base on which other structures are coupled and as a support for supporting them, and is provided in contact with or adjacent to the ground for this purpose. This base frame 100 can also be installed vertically or obliquely to the ground, and other components coupled to the base frame 100 may be connected to the base frame 100 depending on the installation type of the base frame 100. Moving to a relative position is self-evident. For example, the drawing shows that the base frame 100 is installed parallel to the ground, the column frame 110 is coupled to the base frame 100 perpendicular to the ground, and the hanger frame 120 is connected to the column frame 110. It is shown to be coupled perpendicularly and parallel to the base frame 100, but if the base frame 100 is provided perpendicular to the ground, the column frame 110 is parallel to the ground, and the hanger frame 120 It should be taken into account that, like the base frame 100, is positioned perpendicular to the ground. Therefore, in explaining the present invention, even if up, down, left, right, front, and back are described based on the directions shown in the drawings, these directions are not fixed to the corresponding positions and change even if the entire thing is rotated or tilted. Without this, it would be preferable to interpret it relatively.

A pillar frame 110 is coupled to one side of the base frame 100 to extend upward. That is, it extends across the longitudinal direction of the base frame 100, and the relative angle between the base frame 100 and the pillar frame 110 is preferably 90 degrees, but this is not limited.

An exercise unit 200 is provided on the other side of the base frame 100. The exercise unit 200 is provided in front of the base frame 100, and the installation frame 201 may extend forward from one side of the base frame 100 to ensure a firm connection with the base frame 100. The installation frame 201 is formed as a pair spaced apart, so that one installation frame 201 is coupled with an operation frame 230 on which the footrest 220 is installed, and the other installation frame 201 is coupled with a seat 210. However, it is also possible to have the installation frame 201 formed in a flat shape parallel to the ground, and the operating frame 230 and the seat 210 be coupled to the upper surface of the installation frame 201 at different positions. And, a drive unit 130 is installed at the top of the base frame 100.

The column frame 110 serves to support the hanger frame 120 when it receives a force in the direction of the base frame 100 by the wire 131, and for this purpose, it is intersected in the longitudinal direction of the column frame 110. It extends from the base frame 100. At this time, it should be confirmed that the meaning of extending in the present invention includes not only being formed as one piece but also being joined with bolts, etc., and means that the components are in contact with each other.

The column frame 110 extends upward from the base frame 100, and is shown as a parallel pair spaced apart from each other in the drawing. However, as long as it stably supports the hanger frame 120, it can be formed alone or tilted. Of course, it is also possible to provide it in Jin form.

The hanger frame 120 serves to measure the tension of the wire 131 extending from the drive unit 130 by installing a load cell 121, and for this purpose, the load cell 121 is installed from the pillar frame 110 to the pillar frame 110. ) and extends spaced apart from the base frame 100 to cross the longitudinal direction.

A load cell 121 is installed on one side of the hanger frame 120, and a tension transmission pulley 122 is installed on one side of the load cell 121. Therefore, when tension is generated in the wire 131, the tension transmission pulley 122 transmits it to the load cell 121, and the hanger frame 120 provides a reaction force to the load cell 121 to provide a measured value to the load cell 121. Allow this to be created.

Meanwhile, the hanger frame 120 serves in parallel to fix the first guide shaft 301 and the second guide shaft 302. To this end, the upper ends of the first guide shaft 301 and the second guide shaft 302 are coupled to the lower end of the hanger frame 120 in parallel and spaced apart from each other. And, the lower ends of the first guide shaft 301 and the second guide shaft 302 are coupled to the base frame 100.

The drive unit 130 serves to allow the user to feel the weight through the wire 131 when the user applies force to the exercise unit 200 by winding or unwinding the wire 131. To this end, the drive unit 130 is installed on one side of the base frame 100, and the wound wire 131 extends to reach the exercise unit 200 via the tension transmission pulley 122.

The drive unit 130 includes a drive motor 132, a worm 133 axially coupled to the rotation axis of the drive motor 132, and a worm 133 that engages the worm 133 and intersects the rotation axis of the drive motor 132. It is comprised of a worm wheel 134 that rotates to have a rotation axis, and a drive reel 135 that is coupled to and rotates the rotation axis of the worm wheel 134 and on which the wire 131 is wound.

At this time, the reason for not unwinding or winding the wire 131 by directly coupling the drive reel 135 to the rotation axis of the drive motor 132 is to utilize rotation irreversibility, which is one of the characteristics of the worm gear. Since the drive motor 132 is rotated by the magnetic force of the electromagnet, when the drive reel 135 is directly connected to the rotation shaft of the drive motor 132, the tension transmitted through the wire 131 increases the driving force of the drive motor 132. If this is exceeded, the wire 131 is unwound beyond the unwinding amount intended by the drive motor 132, making it impossible to provide tension of the correct weight to the wire 131. At this time, when the drive reel 135 is mounted on the rotation axis of the worm wheel 134, the drive reel 135 is rotated by the drive motor 132, but the rotation direction of the worm wheel 134 and the worm 133 ) is made almost vertically, so the drive motor 132 is not rotated by the tension of the wire 131, so that the winding or unwinding amount of the wire 131 is achieved solely by the driving force of the drive motor 132. do.

The load cell 121 generates measured values by the tension applied to the wire 131 and transmits them to the control unit, and is installed on one side of the hanger frame 120 for this purpose. And, in order to transmit the tension of the wire 131 to the load cell 121, a tension transmission pulley 122 is installed on one side of the load cell 121.

At this time, the tension measured by the load cell 121 may vary depending on the angle at which the wire 131 is applied to the tension transmission pulley 122. Therefore, the control unit performs a calculation to convert the tension measured by the load cell 121 into a weight value. You can go through the process.

The exercise unit 200 serves to enable the user to exercise by forming tension on the wire 131 using muscle strength. For this purpose, it is provided on one side of the base frame 100 and includes the wire 131. The ends of are connected.

This exercise unit 200 includes a seat 210 on which the user can sit, a footrest 220 provided opposite to the seat 210, one end of which is coupled to the footrest 220, and the other end of which is a lower installation frame ( It is hinged to 201) and includes an operating frame 230 through which the other end of the wire 131 is coupled or passes through.

The seat 210 includes a seat and a backrest so that the user can maintain a stable posture when sitting on the seat, leaning back, and pushing the footrest 220 with the legs, and has handles 212 on both sides for added stability. It can be configured. This seat 210 is configured to adjust the separation distance from the footrest 220, and the technology for adjusting the position of the seat 210 in the exercise device may be borrowed from various known technologies.

The footrest 220 is installed on the motion frame 230 so that the user can hinge-operate the motion frame 230 by placing his or her foot on the footrest 220 and pushing the leg. At this time, the footrest 220 is installed on the motion frame 230. ), but if the angle suddenly changes when the user applies force, a safety accident may occur. Therefore, before starting the exercise, the angle of the footrest 220 with respect to the motion frame 230 must be adjusted to suit the user's body. It is desirable to configure the changed angle so that it can be fixed during exercise.

The operating frame 230 is hinged by the user's muscle strength and serves to transmit tension to the wire 131, and for this purpose, it is hinged to the installation frame 201.

In the drawing, there is one fixed pulley type direction change pulley 241 on the installation frame 201 side, and a composite pulley type using two fixed pulleys and one movable pulley between the motion frame 230 and the sheet fixing frame 211. One operating pulley 240 is provided, and a direction change pulley 241 is provided at the lower part of the seat 210. Although not shown in the drawing, a direction change pulley 241 whose position can be estimated is provided in the pillar frame 110. ), but the type and location of the pulley are not limited to this and are appropriately selected within the range capable of transmitting the tension of the wire 131 according to the movement of the operating frame 230 to the load cell 121. It can be.

Meanwhile, the motion pulley 240 shown in the drawing has a length three times that of the displacement of the motion frame 230 when the user pushes the footrest 220 and the motion frame 230 moves in a direction away from the seat 210. It has a shape that pulls the wire 131, and at this time, the tension transmitted to the load cell 121 is 1/3 of that when only one fixed pulley is used, so a longer displacement can be controlled with a smaller force, making it possible to accurately control the driving force. There are advantages to this. However, if the number of pulleys is recklessly increased, the drive motor 132 must be driven more than necessary to obtain the desired tension, resulting in a waste of power. Therefore, it is desirable to set the number of pulleys to the minimum within the limit that can accurately control the drive motor 132.

The control unit serves to control the driving force of the drive motor 132. To this end, it receives a set weight from the interface module, receives a measured value from the load cell 121, and calculates the driving force of the drive motor 132 based on this. .

When the measured value is transmitted from the load cell 121, the control unit calculates the weight value based on it. The weight value refers to calculating how much weight the user can lift when pushing the footrest 220.

If the present invention did not use the drive unit 130 and used weights like conventional exercise equipment, if the weight set by the user was 20 kg and the force applied by the user to the footrest 220 was 18 kg, the weight would not be lifted and would operate. Frame 230 will not move. Therefore, in order to create a similar environment, the control unit of the present invention drives the drive motor 132 in the forward direction only when the weight value calculated from the measured value of the load cell 121 exceeds the set weight value, and the calculated weight If the value is less than the set weight value, the drive motor 132 is driven in the reverse direction. That is, if the force applied by the user exceeds the set weight value, the motion frame 230 moves in the pushing direction, and if the force applied by the user is less than the set weight value, the motion frame 230 moves in the approaching direction. At this time, when the operating frame 230 is completely moved in the direction of the seat 210, the driving motor 132 should no longer be driven in the reverse direction, so the driving of the driving motor 132 is stopped at this time. For this purpose, the drive motor 132 may be equipped with an encoder (not shown) that measures how much forward or reverse rotation has occurred from the initial value, and the control unit determines when the rotation amount according to the measured value of the encoder becomes zero, the operation frame ( 230) is determined to have completely moved in the direction of the sheet 210, and the driving of the driving motor 132 is stopped. Alternatively, a sensing block (not shown) is coupled to the lower end of the driving unit 130 side of the wire 131, and a proximity sensor (not shown) that detects the proximity of the sensing block is provided at the upper end of the driving unit 130. The sensor may be configured to stop driving the drive motor 132 when it detects the detection block.

On the other hand, when using weights like conventional exercise equipment, the wire 131 is pulled per unit time when the user sets a weight of 10 kg and applies a force of 12 kg and when the user sets a weight of 10 kg and applies a force of 20 kg. There is a difference in the length of the draw. In other words, when a stronger force is applied, the wire 131 can be pulled faster.

Therefore, in the present invention, in order to provide a similar environment, the drive motor 132 is controlled to drive faster when a stronger force is applied. When the weight value calculated from the measurement value of the load cell 121 exceeds the set weight value, the control unit increases the forward driving force by an amount corresponding to the exceeded weight value and drives the drive motor 132. It is desirable for this to appear through immediate measurement and control, and when the user applies a force greater than the weight value set by the user, the speed at which the wire 131 is withdrawn increases, so the resistance feels weak, and through this, the user's You can set the weight value appropriate for your muscle strength.

Meanwhile, while the user pushes the footrest 220 and the drive motor 132 rotates forward, sufficient tension is not provided to the wire 131 due to a loosening of the legs, causing the control unit to rotate the drive motor 132 in reverse. A situation may arise where it is controlled to do so. At this time, in the case of conventional exercise equipment using weights, the weights fall rapidly downward and the footrest 220 quickly returns to its initial position, raising the risk of injury to the user. Since the present invention is a rehabilitation exercise device, this situation may occur more frequently. Therefore, the control unit may drive the drive motor 132 in reverse rotation because the weight value calculated from the measurement value of the load cell 121 is less than the set weight value. It is configured not to drive the drive motor 132 with a driving force that exceeds the set driving force. In other words, even if the pressure applied to the footrest 220 is momentarily lost, the footrest 220 does not immediately return to its initial position but gradually returns to prevent safety accidents.

Alternatively, the control unit drives the drive motor 132 only in the forward rotation direction until the user pushes the footrest 220 and the wire 131 is unwound to a set length, and when the wire 131 is unwound more than the set length, the control unit drives the drive motor 132 to the initial position. It may be configured to drive the drive motor 132 only in the reverse rotation direction until it returns to . In this case, even if the user suddenly loses strength while pushing the footrest 220, the footrest 220 will not be pulled toward the user, thereby preventing a safety accident.

Additionally, the control unit may be configured to correct the driving force of the drive motor 132 using the measured value of the load cell 121. If the weight value calculated from the measured value of the load cell 121 is less than the set weight value and the driving motor 132 is not driven or driven in the forward direction even though it is not in the initial position, or from the measured value of the load cell 121 If the drive motor 132 is not driven or driven in the reverse direction even though the calculated weight value exceeds the set weight value, this is regarded as a driving force setting error of the drive motor 132 and is corrected.

Meanwhile, the control unit may set the weight value differently when the user pushes and pulls the footrest 220. When the user pushes with force or pulls while gradually releasing the force, the pulling action, that is, the action of recovering the force, is a more difficult action in terms of muscle use. Therefore, due to the nature of the present invention, which is a rehabilitation exercise device, the footrest 220 is moved in the direction of the user. In the pulling and force recovery operation, the weight is set lighter to reduce user fatigue and prevent safety accidents. In this case, when the user applies force to push the footrest 220, the set weight for forward driving of the driving motor 132 and the weight for reverse driving of the driving motor 132 when the user recovers force and pulls the footrest 220 The set weights are different, and accordingly, if the measured value exists between the two set weights, the driving motor 132 stops driving, allowing the user to take a breath or bend their legs at their desired timing, thereby preventing safety accidents. and can increase exercise effectiveness.

The interface module serves to receive the set weight for exercise from the user and transmit it to the control unit. For this purpose, it is provided on one side of the exercise unit 200 in the form of a monitor equipped with an input means and a display screen. At this time, a display screen with a touch panel may be preferably adopted to enable more intuitive input.

In addition to the function of inputting the set weight value, the interface module can display the exercise schedule, current number of exercises, and set weight value. If there is a call from the medical staff, a menu can be displayed to provide guidance or to call the medical staff. there is.

On the other hand, if the configuration for preventing safety accidents that occur when the user's muscles are relaxed is described above, as the drive motor 132 is driven by electronic control, it is unintentionally driven strongly in the reverse direction due to a momentary error. A configuration that can prevent safety accidents that occur may be required.

For this purpose, the present invention is provided with a safety locking unit 300 to physically block unintentional strong drive in the reverse direction.

The safety locking unit 300 is configured so that the wire 131 is unwound without significant resistance in the direction in which the wire 131 is unwound, but is physically caught in the direction in which the wire 131 is wound. For this purpose, the safety locking unit 300 includes a rod-shaped first guide shaft 301, one end of which is coupled to the hanger frame 120 and the other end of which is coupled to the base frame 100, and the first guide shaft 301. A sliding block 310 that is slidably coupled, a wire fixing block 320 coupled to one side of the sliding block 310, and a wire fixing block 320 coupled to one side of the wire fixing block 320 with a wire 131 interposed therebetween. A wire fixing plate 321 that fixes (131), a back plate 330 coupled to the sliding block 310 or the other side of the wire fixing block 320, and a back plate 330 rotatably coupled to the back plate 330 on one side. a ratchet block 340 with a pole 341 having an end at an acute angle in the protruding direction protruding; a spring 342, one end of which is coupled to the ratchet block 340 and the other end of which is coupled to the front of the back plate 330; , a second guide shaft 302 having one end coupled to the hanger frame 120 and the other end coupled to the base frame 100 and spaced apart from the first guide shaft 301, and protruding toward the ratchet block 340. and the inclined protrusion 351 having an obtuse-angled inclined surface in the direction of the driving unit 130 is formed repeatedly in the longitudinal direction of the second guide shaft 302 to form a ratchet guide 350 coupled to the second guide shaft 302. It consists of: In addition, when the ratchet block 340 is rotated at a set angle in the first direction so as to prevent the ratchet block 340 from rotating more than a set angle in the first direction by being coupled to the back plate 330, the first first contact member contacts the ratchet block 340. When the ratchet block 340 is rotated in the second direction at a set angle by being coupled to the stopper 345 and the back plate 330 or the wire fixing plate 321 to prevent the ratchet block 340 from rotating more than the set angle in the second direction. A second stopper 344 in contact with the ratchet block 340 is further provided.

Therefore, when the drive motor 132 is rotated in the forward direction by the user pushing the footrest 220 and the wire 131 is unwound, the wire fixing block 320 coupled to the wire 131, and the wire fixing block 320 ), the sliding block 310, the back plate 330, and the ratchet block 340 sequentially coupled to all rise in the direction of the hanger frame 120. At this time, the pawl 341 protruding from the ratchet block 340 moves along the inclined surface of the inclined protrusion 351 and rotates the ratchet block 340 at a set angle, and the pawl 341 touches the end of the inclined surface of the inclined protrusion 351. When it passes, it enters the slope starting point furrow of the next inclined protrusion 351 and the ratchet block 340 is restored to its original position by the spring 342. If you continue to push the footrest 220 in this state, the ratchet block 340 continues to rise and repeat the above operation, the ratchet block 340 is restored by the spring 342, and the pole 341 moves the inclined protrusion 351. Because it hits, the wire 131 can be pulled without much resistance along with a clicking sound.

During this operation, if a control error occurs in the drive motor 132 and the drive motor 132 suddenly rotates in reverse, the pawl 341 of the ratchet block 340 contacts the upper vertical surface of the inclined protrusion 351. Since the upper end of the ratchet block 340 is supported by the first stopper 345, the ratchet block 340 cannot rotate and cannot be lowered by the pawl 341. Therefore, even if the drive motor 132 suddenly rotates in reverse, the footrest 220 is not suddenly pulled toward the user.

On the other hand, even if the wire 131 is unwound without fear of malfunction by the above-described configuration, the wire 131 must be wound up, that is, the ratchet block 340 must be lowered according to the user's intention. Even when (132) rotates in the reverse direction, a situation may occur in which the pawl (341) of the ratchet block (340) is blocked by the inclined protrusion (351) of the ratchet guide (350). In order to solve this problem, the present invention rotates the ratchet block 340 during the intended descent to prevent the pawl 341 from being blocked by the inclined protrusion 351, and when the descent is completed and then re-ascends, the ratchet block ( 340) rotates again so that the pole 341 can climb over the inclined protrusion 351.

To this end, the safety locking unit 300 of the present invention includes a first reversal block 370 installed on the first guide shaft 301 at a position closer to the driving unit 130 than the sliding block 310, and a first A second reversal block 360 installed on the second guide shaft 302 at a position closer to the hanger frame 120 than the reversal block 370, and a reversal wheel rotatably coupled to one surface of the ratchet block 340. It is composed including (343). At this time, inclined surfaces are formed in the first reversal block 370 and the second reversal block 360 in directions facing each other, and the reversal wheel rotates when the sliding block 310 moves along the first guide shaft 301. It is configured to contact the inclined surface of the first inversion block 370 or the second inversion block 360.

Looking at the use state of the safety locking unit 300 by the first reversal block 370, the second reversal block 360, and the reversal wheel 343, as shown in FIG. 5, the sliding block 310 is connected to the hanger frame 120. ) When rising in the direction, the inversion wheel 343 contacts the inclined surface of the second inversion block 360, and when the inversion wheel 343 moves along the inclined surface of the second inversion block 360, the ratchet block 340 It rotates in this second direction. In this state, when the sliding block 310 rises further, the ratchet block 340 rotates further in the second direction and the spring 342 moves to the left beyond the rotation axis of the ratchet block 340. Then, the ratchet block 340 is rapidly rotated in the second direction by the force of the spring 342 pulling the ratchet block 340 without the force acting on the inversion wheel 343, and the ratchet block 340 is used as a second stopper. When in contact with 344, the state of the ratchet block 340 is fixed by the spring 342 and the second stopper 344. In this state, since the pawl 341 is not in contact with the inclined protrusion 351 of the ratchet guide 350, the ratchet block 340 can be easily lowered even if the user bends his legs and the wire 131 is wound. .

Then, when the user bends the legs further, the sliding block 310 descends in the direction of the driving unit 130, and the inversion wheel 343 contacts the inclined surface of the first inversion block 370, and is ratcheted by the inversion wheel 343. Block 340 is rotated in the first direction. In this state, when the sliding block 310 and the ratchet block 340 descend further, the spring 342 deviates from the rotation axis of the ratchet block 340 and is located on the right side. Then, the ratchet block 340 is rapidly rotated in the first direction by the force of the spring 342 pulling the ratchet block 340 without the force acting on the inversion wheel 343, and the ratchet block 340 is the first stopper. When in contact with 345, the state of the ratchet block 340 is fixed by the spring 342 and the first stopper 345. In this state, when the user pushes the footrest 220 again and the sliding block 310 and ratchet block 340 are raised, they come into contact with the ratchet guide 350 and are raised.

However, a control error may occur in the driving motor 132 even while the sliding block 310 and the ratchet block 340 are lowered by the user's intention. A driving force greater than the intended driving force may suddenly cause a reverse rotation, causing a safety accident. Accordingly, the safety locking unit 300 of the present invention may further include a ratchet motor coupled to the rear of the back plate 330 and whose rotation axis is coupled to the rotation axis of the ratchet block 340. The ratchet motor serves to rotate the ratchet block 340 from the second direction to the first direction under the control of the control unit. Therefore, when the reverse rotation of the drive motor 132 is driven with a driving force that is much larger than the intended driving force, the control unit operates the ratchet motor in the first direction so that the pawl 341 is in contact with the vertical surface of the inclined protrusion 351, thereby blocking the ratchet block. It is possible to stop the descent of (340).

In the present invention, which consists of the above-described configuration, the wire 131 is unwound or wound to correspond to the weight value set by the user, and the unwinding or winding of the wire 131 is determined according to the length of the exposed wire 131, so the wire ( 131) has the effect of preventing safety accidents even in the event of sudden loss of muscle strength during the unwinding operation.

In the present invention, the weight value is calculated using the tension that the force applied by the user acts on the wire 131, and based on this, the drive motor 132 is rotated to unwind or wind the wire 131, and the drive motor 132 ), the driving force is applied by the worm gear, so that the driving force of the drive motor 132 is not varied due to the force applied by the user and is accurately driven.

In addition, the present invention increases or decreases the driving force of the driving motor 132 depending on how much the force applied by the user exceeds the set weight, so that the user can feel a similar feeling as when exercising using weights.

In addition, in the present invention, the weight value can be set lower when the wire 131 is lowered compared to when it is raised, and safety accidents can be double prevented by being provided with a safety locking unit 300, so rehabilitation of disabled people with physical disabilities It has a particularly useful effect during exercise.

100: base frame 110: pillar frame
120: Hanger frame 121: Load cell
122: Tension transmission pulley 130: Drive unit
131: wire 132: driving motor
133: Worm 134: Worm Wheel
135: Drive reel
200: movement unit 201: installation frame
210: Sheet 211: Sheet fixing frame
212: handle 220: footrest
230: action frame 240: action pulley
241: Direction change pulley
300: Safety locking unit 301: First guide shaft
302: second guide shaft 310: sliding block
320: wire fixing block 321: wire fixing plate
330: back plate 340: ratchet block
341: pole 342: spring
343: Inversion wheel 344: Second stopper
345: First stopper 350: Ratchet guide
351: Inclined protrusion 360: Second inversion block
370: 1st inversion block

Claims (8)

Base frame 100;
Column frames 110 extending from the base frame 100 to intersect the longitudinal direction of the base frame 100;
A hanger frame 120 fixed across the pillar frame 110;
A driving unit 130 installed on one side of the base frame 100 to wind or unwind the wire 131;
An exercise unit 200 to which the end of the wire 131 is connected;
a control unit that determines a driving amount of the driving unit 130 so that the wire 131 is wound or unwound corresponding to a set weight value;
It includes an interface module that receives a set weight for exercise from the user and transmits it to the control unit,
The control unit determines a forward or reverse rotation direction of the driving unit 130 according to the length of the wire 131 exposed in the driving unit 130;

First and second bar-shaped guide shafts 301 and 302 coupled to the hanger frame 120 and spaced apart from each other; A sliding block 310 surrounding the first guide shaft 301; A wire fixing block 320 for fixing the wire 131 on one side of the sliding block 310; A back plate 330 coupled to the sliding block 310 or the wire fixing block 320; A ratchet block 340 rotatably coupled to the back plate 330 and formed with a pawl 341 having a protruding end; A spring 342 whose both ends are coupled to the front of the ratchet block 340 and the back plate 330, respectively; A safety locking unit 300 including a ratchet guide 350 coupled to the second guide shaft 302 and formed vertically with a plurality of inclined protrusions 351 protruding toward the ratchet block 340. Includes,
A rehabilitation exercise device in which the pole (341) is caught by the inclined protrusion (351) to prevent downward movement of the wire (131).
According to paragraph 1,
The control unit is a rehabilitation exercise device capable of setting different weight values when the driving unit 130 rotates in the forward and reverse directions.
According to paragraph 1,
The drive unit 130 includes a drive motor 132, a worm 133 axially coupled to the rotation axis of the drive motor 132, and a worm 133 that engages the worm 133 to drive the drive motor 132. A rehabilitation exercise device comprising a worm wheel (134) rotated to have a rotation axis intersecting the rotation axis, and a drive reel (135) coupled to and rotating with the rotation axis of the worm wheel (134) and around which the wire (131) is wound.
According to paragraph 3,
It further includes a load cell 121 installed on one side of the hanger frame 120,
The control unit drives the drive motor 132 in the forward direction if the weight value calculated from the measurement value of the load cell 121 exceeds the set weight value, and if the calculated weight value is less than the set weight value, the drive motor 132 ) is driven in the reverse direction, and the drive motor 132 is not driven or driven in the forward direction when the calculated weight value is less than the set weight value, or the drive motor 132 is driven in the forward direction when the calculated weight value exceeds the set weight value. A rehabilitation exercise device that corrects the driving force of the driving motor (132) when it is not driven or driven in the reverse direction.
According to claim 4,
The control unit is a rehabilitation exercise device that, when the weight value calculated from the measurement value of the load cell 121 exceeds the set weight value, increases the forward driving force by an amount corresponding to the exceeded weight value to drive the drive motor 132. .
delete According to claim 1,
The safety locking unit 300,
It further includes a first reversal block 370 installed on the first guide shaft 301 and a second reversal block 360 installed on the second guide shaft 302,
The first inversion block 370 and the second inversion block 360 have inclined surfaces facing each other,
As the sliding block 310 moves up and down, a reversal wheel 343 in contact with the inclined surface of the first reversal block 370 or the second reversal block 360 is coupled to one surface of the ratchet block 340,
When the sliding block 310 rises and the reversal wheel 343 contacts the inclined surface of the second reversal block 360, the ratchet block 340 rotates in the second direction, and the sliding block 310 When the ratchet block 340 rises further and rotates further in the second direction so that the spring 342 or an extension of the spring 342 deviates from the rotation axis of the ratchet block 340, the ratchet block 340 fixed in a rotated state in the second direction,
When the sliding block 310 descends and the reversal wheel 343 contacts the inclined surface of the first reversal block 370, the ratchet block 340 rotates in the first direction, and the sliding block 310 When the ratchet block 340 is further lowered and further rotated in the first direction so that the spring 342 or an extension of the spring 342 deviates from the rotation axis of the ratchet block 340, the ratchet block 340 A rehabilitation exercise device fixed in a state rotated in a first direction.
According to claim 7,
The safety locking unit 300,
It is coupled to the back plate 330 so that the ratchet block 340 cannot be rotated more than a set angle in the first direction. When the ratchet block 340 is rotated at a set angle in the first direction, the ratchet block 340 is contacted. first stopper 345;
When the ratchet block 340 is coupled to the back plate 330 or the wire fixing plate 321 to prevent the ratchet block 340 from rotating more than a set angle in the second direction, the ratchet block 340 is rotated at a set angle in the second direction. A second stopper 344 in contact with the ratchet block 340;
Rehabilitation exercise equipment including.