KR101840398B1 - Digital leg press - Google Patents

Abstract

A digital leg press is disclosed. The disclosed digital leg press comprises: a drive motor for providing power; a torque sensor for measuring an output torque of the drive motor; a footrest support coupled to a wire to which tension is applied by the drive motor; a footrest coupled to one end of the footrest support; a display including an input part and a display part; and a control unit for controlling the drive motor by comparing a weight value inputted into the input part and a torque value measured by the torque sensor, wherein the drive motor provides a variable torque which varies with time.

Description

Digital leg press

The present invention relates to a digital leg press, and more particularly, to a digital leg press capable of providing a variable torque that varies with time, thereby efficiently improving muscle strength, and providing an exercise program corresponding to an input target calorie, Lt; / RTI >

In addition to the trend of aging in recent years, people with difficulty in walking and using stairs are increasing due to weakness of lower leg muscles due to obesity and lack of exercise.

According to the National Health Insurance Corporation, patients with knee arthroplasty increased by more than 20% per year, and patients with degenerative arthritis in the 30-40 age group are on the rise.

This is interpreted as a result of the fact that the leg strength is rapidly weakened by avoiding the movement of the body such as using escalator or elevator instead of using the stairs when using the vehicle for a short distance,

With this trend, interest in muscle strength exercises for strengthening muscular strength is increasing more than ever.

A variety of types of strength training apparatuses are commercially available for improving muscle strength. Among the universally popular fitness equipment is a leg press that strengthens the quadriceps and gluteus muscles.

Conventional leg press is a fitness device that increases strength by pushing a foot on foot after weaving a weight stack on a wire.

Conventional leg presses have caused a problem in that a safety accident occurs by dropping a weight stack in the process of hanging a heavy stack by a person on a wire, and it is difficult for a elderly person to lift a heavy stack. In order to solve this problem, a method of providing a load using a motor has been employed.

However, the leg press driven by the conventional motor has solved the troubles of hitting the weight stack, but only provides a load of a certain size, so that it is easy to lose interest in exercise and does not contribute to efficient muscle strength improvement.

Also, leg presses driven by conventional motors fail to meet the user's desire because they can not provide an optimal exercise program for a desired exercise goal.

Therefore, it is urgently required to develop a leg press that not only provides various variable loads for efficient muscle strength improvement but also provides an optimal exercise prescription that meets the target calorie of the user.

Korean Patent Registration No. 10-1535389

SUMMARY OF THE INVENTION It is an object of the present invention to provide a variable load by a driving motor to enable efficient muscle strength improvement.

It is another object of the present invention to enable scientific exercise management by providing an optimal exercise prescription according to a target calorie of a user.

In addition, the present invention aims at detecting the use of a user's exercise apparatus by a contact sensor mounted on a foot plate, preventing a safety accident, and cutting off an unnecessary power source.

 The present invention relates to a drive motor for providing power; A torque sensor for measuring an output torque of the drive motor; A footrest support coupled to a wire to which tension is applied by the drive motor; A footrest coupled to one end of the footrest support; A display including an input section and a display section; And a control unit for controlling the driving motor by comparing a weight value input to the input unit and a torque value measured by the torque sensor, wherein the driving motor provides a variable torque varying with time, To provide digital leg presses.

Also, the variable torque of the present invention may be a step mode in which a torque of a magnitude different from that of a predetermined time period is maintained after a torque of a predetermined magnitude is maintained for a predetermined time period; A linear mode in which the magnitude of the predetermined time torque linearly changes; Or a quadratic function mode in which the magnitude of the predetermined time torque varies along a quadratic function; The mode of operation is changed according to any one of the modes.

In order to impart the step mode of the present invention, the number of steps, the step duration, and the maximum torque are input to the input unit, and the maximum torque and the maximum torque And the time is input.

Further, when the target calorie and the type of the variable torque mode are input to the input unit of the present invention, the controller calculates the calorie consumption according to the input variable torque mode and provides a torque characteristic curve corresponding to the input condition do.

Further, the display unit of the present invention is characterized by displaying the target calorie, the consumed calorie, and the torque characteristic curve, and when the target is achieved, the drive motor is stopped and a beep sounding the target achievement is sounded.

The present invention is also characterized by providing a synchronization message every time a predetermined percentage set for the setting goal of the present invention is achieved.

In addition, a foot guide line for guiding a foot position is formed on the foot plate of the present invention, and each of the foot guide lines has a wide width, a medium width and a narrow width, and a contact sensor is disposed on the foot guide line, And calculates the consumed calories corresponding to the position of the foot sensed by the user.

Further, the present invention provides a foot sensor comprising: a touch sensor mounted on the foot plate for sensing whether or not the foot is in contact; Wherein driving of the driving motor is stopped when it is detected that the foot is not brought into contact with the footplate for a predetermined time after the driving motor is operated.

The digital leg press according to the present invention provides a variable load by a drive motor, thereby enabling efficient muscle strength improvement.

Also, the digital leg press according to the present invention provides an exercise prescription according to a target calorie of a user, thereby enabling scientific exercise management.

In addition, the digital leg press according to the present invention is a touch sensor mounted on a foot plate, detects the use of a user's exercise device, prevents a safety accident, and cuts off an unnecessary power source.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a perspective view of a leg press according to the present invention.
2 is a view showing a power transmission device of a leg press according to the present invention.
3 is a view for explaining an operating state of a leg press according to the present invention.
4 is a view for explaining a variable torque mode according to the present invention.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. It should be understood, however, that the techniques described herein are not intended to be limited to any particular embodiment, but rather include various modifications, equivalents, and / or alternatives of the embodiments of this document. In connection with the description of the drawings, like reference numerals may be used for similar components.

Also, the terms "first," "second," and the like used in the present document can be used to denote various components in any order and / or importance, and to distinguish one component from another But is not limited to those components. For example, 'first part' and 'second part' may represent different parts, regardless of order or importance. For example, without departing from the scope of the rights described in this document, the first component can be named as the second component, and similarly the second component can also be named as the first component.

It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the other embodiments. The singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. The general predefined terms used in this document may be interpreted in the same or similar sense as the contextual meanings of the related art and, unless expressly defined in this document, include ideally or excessively formal meanings . In some cases, even the terms defined in this document can not be construed as excluding the embodiments of this document.

FIG. 1 is a perspective view of a leg press according to the present invention, and FIG. 2 is a view showing a power transmission device of a leg press according to the present invention.

Will be described with reference to Figs. 1 and 2. Fig.

As shown in FIG. 1, the frame forming the frame of the leg press includes a vertical frame 100 and a lower frame 200.

The lower frame 200 is formed at a lower portion of the vertical frame 100.

A seat 150 is mounted on the lower frame 200.

A mounting groove 130 is formed at a front end of the lower frame 200.

The footrest support 300 is coupled to the mounting groove 130 of the lower frame 200 through the hinge shaft 120.

As shown in FIG. 2, the leg press is powered by the drive motor 200.

A speed reducer 210 is coupled to one side of the driving motor 200. The speed reducer 210 converts the torque output from the driving motor 200 into a predetermined ratio.

The output torque of the speed reducer 210 is measured by the torque sensor 270, and is transmitted to a control section, which will be described later.

A drive pulley 220 is coupled to one side of the speed reducer 210. The driving pulley 220 transmits the rotational force of the speed reducer 210.

And a driven pulley is provided to be spaced apart from the drive pulley 220. The driven pulley is composed of two pulleys formed at both ends of one rotation axis, that is, a first driven pulley 230 and a second driven pulley 240.

The first driven pulley 230 and the second driven pulley 240 are connected to each other by a single rotation shaft, and rotate at the same speed.

The belt 260 is engaged to transmit power from the drive pulley 220 to the first driven pulley 230. Belt 260 is typically a V-belt, but may be replaced by a chain.

A wire 250 is wound around the second driven pulley 240.

One end of the wire 250 is wound around the second driven pulley 240 and the other end is fixed to the front surface of the footrest support 300.

The torque of the drive motor 200 is transmitted to the first driven pulley 230 through the drive pulley 220 as the drive motor 200 is driven. Then, the second driven pulley 240 is rotated together with the rotation of the first driven pulley 230, so that the wire 250 pulls the foot support 300.

At this time, since the footrest support 300 is coupled by the hinge shaft 120, the footrest support 300 is inclined and rotated until it is supported by the step 140 adjacent to the mounting recess 130.

In a state in which tension is applied to the wire 250 by the driving motor 200, the user pushes the foot plate 310 with his foot to perform a muscle force exercise.

3 is a view for explaining an operating state of a leg press according to the present invention.

3 (a) is a view showing a state before a force is applied to the foot plate 310, and FIG. 3 (b) is a view showing a state in which the foot plate 310 is rotated by applying a force to the foot plate 310.

A display 160 is coupled to a side surface of the lower frame 200. The display 160 is formed with an input unit and a display unit. The user can input the type of load, target calories, etc. through the input unit. The display shows various kinds of exercise information such as torque characteristic curve, target calorie, and consumed calorie.

Meanwhile, the display 160 may include a speaker. The speaker also generates a beep to inform the user of the achievement of the goal in achieving the exercise goal and provides a synchronization message every time a predetermined percentage, e. G. 25%, 50%, 75% To help exercise management effectively.

The control unit controls the driving motor 200 by comparing the weight value input to the input unit with the torque value measured by the torque sensor 270.

By applying the tension to the wire 250 by the driving motor 200 as described above, it is possible to solve the problem that a safety accident occurs by dropping the weight stack or it is difficult for the elderly person to move the weight stack.

However, the leg press which gives only a load of a uniform size by the drive motor 200 makes the user feel fatigue easily. In addition, in order to improve the muscle strength effectively by gradually changing the intensity of the exercise, it is necessary to reset the exercise load after stopping the driving motor 200 during the exercise.

Therefore, the leg press according to the present invention provides a variable load that changes its load with time.

4 is a view for explaining a variable torque mode according to the present invention.

Will be described with reference to FIG.

The present invention provides three variable load modes. However, various modifications may be made without departing from the scope of the present invention.

4 (a) is a step mode. In the step mode, a torque of a predetermined magnitude is maintained, and then a torque of a magnitude different from that of a predetermined time period is maintained.

The user inputs the number of steps, the step duration and the maximum torque in the input section to give the step mode. Then, the display shows a torque characteristic curve that meets the input conditions. Through this, the user can grasp the trend of the load according to the time change of the program to be exercised by the user.

4 (b) is a linear mode. The linear mode is a mode in which the magnitude of the torque changes linearly for a predetermined time.

4 (c) is a quadratic function mode. The quadratic function mode is a mode in which the magnitude of the torque changes along a quadratic function for a predetermined time.

The user inputs the maximum torque and the maximum torque reaching time to the input section to give a linear mode or a quadratic function mode.

With the emergence of wearable devices, lifestyle habits that set and manage their own exercise goals are spreading like fashion.

Accordingly, the present invention provides an exercise program that best matches the exercise goal set by the user.

For this purpose, the user inputs the target calorie and the type of the variable torque mode in the input unit. Then, the control unit calculates the consumed calories according to the input variable torque mode, and provides an optimal torque characteristic curve corresponding to the input condition.

As a result, the user is given the optimal exercise regimen for his / her exercise goals.

The control unit stops the driving motor 200 when the user reaches the target through the exercise, and generates a signal sound indicating that the target is achieved.

In addition to this, especially the muscular exercise is easy to be bored, and when it feels difficult, it is easy to give up. However, since the improvement of muscle strength is achieved through a process of overcoming such a moment, each time a predetermined percentage of the set goal is achieved, the control unit provides a synchronization message through the speaker to allow the user to finish the exercise program successfully I am selfless.

Meanwhile, the foot plate 310 is provided with a touch sensor 330 for detecting whether or not the user is using.

The contact sensor 330 senses whether or not the user touches the foot and when the footplate 310 is detected as not touching the foot for a predetermined time after the operation of the drive motor 200, Lt; / RTI > This can prevent safety accidents and unnecessary power.

The leg presses change the strength parts of the muscles and their consumed calories according to the positions of the feet disposed on the foot plate (310). By using this, the user can intensively train the muscles of the desired region.

In view of this point, a foot guide line 320 for guiding the foot position is formed on the foot plate 310.

The foot guide lines 320 are formed by being divided into a wide width, a medium width, and a narrow width, respectively, and various modifications may be made.

The foot guide line 320 is equipped with a contact sensor 330.

It is possible to grasp the position where the feet are disposed by the contact sensor 330, and thereby the calories consumed during exercise according to the foot position can be calculated.

For example, when a load of a linear mode is inputted while a foot is arranged with a wide width, the consumed calories corresponding thereto can be calculated. In this case, the calculated calorie consumption can be calculated with the same condition It will be different from the calories consumed when the linear mode load is input.

The control unit can use the consumed calorie data according to the foot position to present an optimum torque characteristic curve considering the foot position when the target calorie and the type of the variable torque mode are input to the input unit.

As a result, it is possible to prescribe exercise in consideration of foot position during exercise.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Vertical frame 100
The lower frame 110
Hinge shaft 120
Mounting recess 130
Step 140
Sheet 150
Display 160
Drive motor 200
Reducer 210
Drive pulley 220
The first driven pulley 230
The second driven pulley 240
Wire 250
Belt 260
Torque sensor 270
Footrest support 300
Scaffolding 310
Foot Guidelines 320
Contact sensor 330

Claims (8)

In a leg press, which pushes a foot plate to kick a muscle,
A drive motor for supplying power;
A torque sensor for measuring an output torque of the drive motor;
A footrest support coupled to a wire to which tension is applied by the drive motor;
A footrest coupled to one end of the footrest support;
A display including an input section and a display section; And
And a control unit for controlling the driving motor by comparing a weight value input to the input unit with a torque value measured by the torque sensor,
A foot guide line for guiding a foot position is formed on an upper portion of the foot plate, the foot guide line having a wide width, a medium width, and a narrow width,
A touch sensor is disposed on the foot guiding line,
Wherein the control unit calculates a consumed calorie corresponding to the position of the foot sensed by the contact sensor,
Characterized in that the drive motor provides a variable torque that varies with time, The method according to claim 1,
The variable torque,
A step mode in which a torque of a magnitude different from that of a predetermined time period is maintained after a constant magnitude of torque is maintained for a predetermined time period;
A linear mode in which the magnitude of the predetermined time torque linearly changes; or
A quadratic function mode in which the magnitude of the predetermined time torque varies along a quadratic function; A digital leg press, which changes according to one of the modes, 3. The method of claim 2,
The step number, the step duration, and the maximum torque are input to the input section to give the step mode,
Characterized in that a maximum torque and a maximum torque reaching time are inputted to the input section to give the linear mode or the quadratic function mode, 3. The method of claim 2,
Wherein when the target calorie and the type of the variable torque mode are input to the input unit, the controller calculates the calorie consumption according to the input variable torque mode and provides a torque characteristic curve corresponding to the input condition. 5. The method of claim 4,
Wherein the display unit displays a target calorie, a consumed calorie, and a torque characteristic curve,
Characterized in that the drive motor is stopped at the time of the completion of the target, 6. The method of claim 5,
Characterized in that it provides a synchronization message every time a predetermined percentage set for the set target is achieved, characterized in that the digital leg press delete The method according to claim 1,
And a contact sensor mounted on the foot plate for sensing whether the foot is in contact with the foot,
Characterized in that the driving of the driving motor is stopped when it is detected that the foot is not brought into contact with the footplate for a predetermined time after the driving motor operation.

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