EP3714949A1

EP3714949A1 - Smart exercise load apparatus for muscular exercise equipment

Info

Publication number: EP3714949A1
Application number: EP19176960.3A
Authority: EP
Inventors: Junyoung Back; Chibeom Noh; Sung Min Yoon
Original assignee: Ronfic Co ltd
Current assignee: Ronfic Co ltd
Priority date: 2019-03-28
Filing date: 2019-05-28
Publication date: 2020-09-30
Also published as: KR102247670B1; KR20200114200A

Abstract

The present invention relates to a smart exercise load apparatus for muscular exercise equipment, and more particularly to a smart exercise load apparatus for muscular exercise equipment, the apparatus which enables more efficient and more effective exercise by setting a user-customized exercise condition and providing and collecting exercise information.

According to the present invention, the smart exercise load apparatus includes: a smart exercise load apparatus including: a frame body for modularization of the apparatus; a weight attachment mounted to the frame body and configured to generate an exercise load necessary for muscular exercise and freely change the exercise load; a control box mounted to the frame body, electrically connected to the weight attachment, and configured to control exercise strength by controlling operation of the weight attachment and to drive a program for collecting and providing user exercise information acquired from operation information of the weight attachment; and a resistance module mounted to the frame body, electrically connected to the weight attachment and the control box, and configured to, in response to a signal from the control box, generate a regenerative resistance of braking the weight attachment, the resistance representing a characteristic of an operation that is frequently driven and stopped.

Description

BACKGROUND OF THE INVENTION

Field of the invention

Related Art

Due to development of civilization, the quality of lives of people around the world has improved significantly, but secondary life and consistent stress affect people's health and reduce their physical activity..
Lack of physical activity increases the likelihood of various lifestyle-related diseases (lack-of-exercise diseases) to develop, and exercise are recognized more important and more necessary than ever to avoid and get over the lifestyle-related diseases and live healthy lives.
According to the "Survey on Citizens' Sports Participation in 2017" conducted by the Korean National Statistical Office, 59.2% of the responders work out regularly once or more in a week, and walking (31.8%), hiking (17.0%), and bodybuilding (14.7%) are top on the list of popular workouts. This result shows that many people chose bodybuilding (hereinafter, referred to as "weight training") for exercise.
As such, weight training becomes more and more popular as a way of improving physical health. While people tended to do weight training mainly to enhance muscular strength and lose weight, some people starts weight training to make their body shape better for esthetic purposes. In addition, it prevents degradation of muscular functions and reduction of muscles due to again, and reduces a possibility to get hurt while exercise. In addition, it is effective in preventing osteoporosis and reducing prevalence of osteoporosis, and preventing and alleviating backpain. In addition, weight training increase a capability and confidence to work out. As such, weight training has various advantageous effects,
Meanwhile, among various ways of weight training, resistance exercise are regarded the most effective, and not just professional sport players but also ordinary people enjoy this type of weight raining. The resistance exercise is carried out using a diversity of muscular exercise equipment.
That is, weight training to be carried out a diversity of muscular exercise equipment such as a weight machine, a smith machine, a cable machine, etc. are safe and convenient to use, compared to free weight exercise (muscular exercise using a dumbbell, a barbell, etc.). In addition, if a user aims to strengthen a target weak muscle, the weight training is able to train the target muscle alone.
Regarding this, a number of related arts have been disclosed, including Korean Utility Model Registration No. 20-0248827 (titled "WEIGHT TRAINING EQIPMENT) and Korean Utility Model Registration No. 20-0379517 (titled "TORSO AND SHOULDER EXERCISE EQUIPMENT). However, these related arts relate to simple (one-dimensional) muscular exercise equipment for strengthening muscles of a particular body part using a weight (a weight block), but do not have technical characteristics (devices) for adding or changing various functions, such as measuring the number of times of exercise, measuring muscle strength, measuring 1 repetition maximum (1RM: which indicates the heaviest weight a user can lift with maximum effort in a single repetition), changing eccentric and concentric exercise load, freely changing the load during exercise, etc. Therefore, there have been limitations in enhancing a exercise capability.
Thus, there is need for researches and development of an exercise load apparatus for muscular exercise equipment, the apparatus which is capable of setting and control user-customized exercise strength (load control) and collecting and providing exercise information, and which can be attached to every type of muscular exercise equipment to be upgraded as smart muscular exercise equipment.

[Related Documents]

[Patent Documents]

(Document 1) Korean Utility Model Registration No. 20-0248827 (Registered on September 19, 2001)
(Document 2) Korean Utility Model Registration No. 20-0379517 (Registered on March 11, 2005)

SUMMARY OF THE INVENTION

An object of the present invention is to provide a smart exercise load apparatus for muscular exercise equipment, the apparatus which includes a weight attachment capable of generating an exercise load necessary for muscular exercise, freely controlling the exercise load, and acquiring operation information, and a control box capable of controlling the weight attachment and collecting and providing operation information acquired therefrom, thereby enabling a user-customized exercise condition to be set and thereby allowing muscular exercise to be carried out efficiently and effectively.
Another object of the present invention is to provide a smart exercise load apparatus for muscular exercise equipment, the apparatus which enables various exercise conditions (exercise strength, function addition, etc.) by controlling the control box, thereby allowing optimum muscular exercise to be carried out and helping bring various exercise effects necessary for a user.
In order to achieve the above objects, the present invention provides a smart exercise load apparatus including: a frame body for modularization of the apparatus; a weight attachment mounted to the frame body and configured to generate an exercise load necessary for muscular exercise and freely change the exercise load; a control box mounted to the frame body, electrically connected to the weight attachment, and configured to control exercise strength by controlling operation of the weight attachment and to drive a program for collecting and providing user exercise information acquired from operation information of the weight attachment; and a resistance module mounted to the frame body, electrically connected to the weight attachment and the control box, and configured to, in response to a signal from the control box, generate a regenerative resistance of braking the weight attachment, the resistance representing a characteristic of an operation that is frequently driven and stopped.
The smart exercise load apparatus may further include a touch screen mounted to the frame body and electrically connected to the control box so as to allow a user to control the control box, and the touch screen may output the user exercise information acquired from operation information of the weight attachment through the control box.
The weight attachment may include: a load generating unit configured to generate an exercise load upon unidirectional rotation and freely change the exercise load; a plurality of first guide pulleys and a second guide pulley wound by a wire rope continuing from muscular exercise equipment so as to help the wire rope operate smoothly; a load cell disposed between the load generating unit and any one of the plurality of the first guide pulleys to measure tension of the wire rope; and a unit bracket for coupling the load generating unit, the plurality of first guide pulleys, the second guide pulley, and the load cell.
A micro computer, a motor drive, a power supply, an earth leakage breaker, and a noise filter may be embedded in the control box, and the micro computer may be configured to store a number of times of exercise and a number of sets of exercise, measure muscular strength, measure 1RM, change eccentric and concentric exercise loads, change an exercise load during exercise, add and change an exercise function, and provide exercise information, collected by receiving operation information of the load generating unit and tension information of a wire rope from a load cell of the weight attachment, to a user through an output device.
The resistance module may include a regenerative resistance configured to generate a resistance for rapid braking by consuming power of the load generating unit, and at least one cooling fan for preventing overheating of the regenerative resistance, and the resistance module may have a box-shaped structure to isolate noise generated in the regenerative resistance.
The unit bracket may further include a deviation preventing means that allows alignment winding of a wire rope, which is to be wound around and unwound from a wind drum provided in the load generating unit, and prevents unwinding of the wire rope.
The load generating unit may include a wind drum which the wire rope is to be wound around or unwound from, and a spiral alignment groove may be formed on a circumferential surface of the wind drum to allow the wire rope to be wound in a predetermined alignment state so as to help the wire rope operate smoothly.
The deviation preventing means further may include: a pressing roll in tight contact with the circumferential surface of the wind drum to press the wire rope, which is to be wound around or unwound from the wind drum, so as to allow alignment winding of the wire rope and to prevent unwinding of the wire rope from the wind drum even when the wire rope is loosen; a hinge arm having a front end hinge-coupled to the pressing roll, and disposed at a position where the pressing role is allowed to press a winding portion of the wire rope; a hinge bracket for hinge-coupling of the other end of the hinge arm; and a spring (not shown) providing elasticity to the hinge arm so as to allow the hinge arm to rotate in a direction of pressing one surface of the wire rope.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 to 3 are a perspective view, a front view, and a rear view showing configuration of a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention.
FIGS. 4A to 4C are perspective views and a rear view showing configuration of a weight attachment in a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention.
FIGS. 5A and 5B are use state views of a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the following description, like reference numerals designate like elements although they are shown in different drawings. Further, in the following description of some embodiments, a detailed description of known functions and configurations incorporated herein will be omitted for the purpose of clarity.
In the accompanying drawings, FIGS. 1 to 3 are a perspective view, a front view, and a rear view showing configuration of a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention. FIGS. 4A to 4C are perspective views and a rear view showing configuration of a weight attachment in a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention. FIGS. 5A and 5B are use state views of a smart exercise load apparatus for muscular exercise equipment according to an embodiment of the present invention.
As shown in FIG. 1 to 3, a smart exercise load apparatus A for muscular exercise equipment according to the present invention includes: a frame body 1 for modularization of the apparatus A; a weight attachment 2 mounted to the frame body 1 and configured to generate exercise a load necessary for muscular exercise and freely change the exercise load; a control box 3 mounted to the frame body 1, electrically connected to the weight attachment 2, and configured to control (change) exercise strength (exercise load) by controlling operation of the weight attachment 2 and to drive a program for collecting and providing user exercise information acquired from operation information of the weight attachment 2; and a resistance module 4 mounted to the frame body 1, electrically connected to the weight attachment 2 and the control box 3, and configured to, in response to a signal from the control box 3, generate a regenerative resistance of braking the weight attachment 2, the resistance representing a characteristic of an operation (rotation) that is frequently driven and stopped.
In addition, the smart exercise load apparatus A further includes a touch screen mounted to the frame body 1 or one of frames of the muscular exercise equipment. The touch screen is electrically connected to the control box 3 to enable a user to control the control box 3, and displays user exercise information acquired from operation information of the weight attachment 2 through the control box 3.
The frame body 1 is a base structure for modularization of the apparatus and for connection with the muscular exercise equipment. As the weight attachment 2, the control box 3, and the resistance module 4 are housed and mounted in connection, an attachment bracket 11 for holding and coupling the weight attachment 2 is provided below in an integrated manner.
A finish cover (not shown) may be assembled to the frame body 1to prevent exposure of the weight attachment 2, the control box 3, and the resistance module 4 and improve esthetic appearance.
In addition, the smart exercise load apparatus A for muscular exercise equipment according to the present invention may be modified as a general exercise load apparatus that allows muscular exercise by use of an existing weight (a weight block). In this case, the weight attachment 2, the control box 3, and the resistance module 4 are omitted.
As described above, the weight attachment 2 generates an exercise load necessary for muscular exercise, freely changes the exercise load, and controls the wire rope W to operate smoothly. As shown in FIGS. 4A and 4B, the weight attachment 2 includes: a load generating unit 21 configured to generate an exercise load according to unidirectional rotation and freely control the exercise load; a plurality of first guide pulleys 22 and a second guide pulley 23 wound by the wire rope W so as to allow the wire rope W operate smoothly; a load cell 24 positioned between the load generating unit 21 and one of the plurality of first guide pulleys 22 to constantly measure tension of the wire rope W; and a unit bracket 25 for coupling of the load generating unit 21, the plurality of guide pulleys 22, the second guide pulley 23, and the load cell 24.
In addition, as shown in FIGS. 4B and 4C, there may be further configured a deviation preventing means 26 which is mounted to the unit bracket 25, and which allows alignment winding of the wire rope 4, which is to be wound around and unwind from a wind drum of the load generating unit 21, and prevents unwinding of the wire rope W.
Upon a power supply, the load generating unit 21 may be driven in unidirectional rotation to generate an exercise load and capable of controlling an exercise load (approximately 5∼100kg, the weight which can change by 1kg). It is preferable that the load generating unit 21 is a servo driver (or a servo motor) configured to drive a load in response to a control signal, but aspects of the present invention are not limited thereto, and the load generating unit 21 may be modified to any machinery element as long as the same operation relationship and the same operation effect can be achieved.
In addition, a wind drum 211 which the wire rope W is to be wound around or unwound from is provided. A spiral alignment groove 211-1 is formed on a circumferential surface of the wind drum 211 to allow the wire rope W to be wound in a predetermined alignment state so as to help the wire rope W operate smoothly.
The first guide pulleys 22 has a sufficient diameter so as to help the wire rope W operate smoothly, to prevent the wire rope W from being peeled off, and to deliver a weight to the load cell 24 vertically.
The load cell 24 is a weight sensor to detect tension of the wire rope W. The load cell 24 detects tension of the wire rope W caused by an exercise load, converts the tension into an electrical signal, and transmits the electrical signal to the control box 3.
The deviation preventing means 26 includes: a pressing roll 261 in tight contact with the circumferential surface of the wind drum 211 to press the wire rope W, which is to be wound around or unwound from the wind drum 211, so as to enable smooth winding and alignment winding of the wire rope W and prevent unwinding of the wire rope W from the wind drum 21 in spite of reduced tension of the wire rope W (upon low-weight exercise); a hinge arm 262 having a front end hinge-coupled to the pressing roll 261 and disposed at a position where the pressing role 261 is allowed to press a winding portion of the wire rope W; and a hinge bracket 263 for hinge-coupling of the other end of the hinge arm 262.
In addition, there is preferably further provided a spring (not shown) that provides elasticity to the hinge arm 262 so as to allow the hinge arm 262 to rotate in a direction of pressing one surface of the wire rope W.
It is preferable that the pressing roll 261 is made of an elastic material such as urethane or rubber in order to prevent damage to the wire rope W, but aspects of the present invention are not necessarily limited thereto, and the pressing roll 261 may be made of any material as long as the same operation effect can be achieved.
The control box 3 receives exercise information such as type and strength of exercise, and constitutes an information inputting and providing means used to receive a signal from an encoder (not shown) of the load generating unit 21 and from the load cell 24, to calculate the number of times of exercise, the number of sets of exercise, the maximum muscular strength, etc., and to output a result of the calculation to the touch screen S. A micro computer, a motor drive, a switched mode power supply (SMPS), an earth leakage breaker, a noise filter, etc. are embedded in the control box 3.
The micro computer may add or change any of various functions, such as storing the number of times of exercise and the number of sets of exercise, measuring muscular strength, measuring 1RM, changing eccentric and concentric exercise loads, freely changing an exercise load during exercise, etc. In addition, the micro computer collects exercise information by receiving signals indicating operation information of the load generating unit 21 and tension measurement information of the wire rope W from the load cell 24, and provides the collected exercise image (or outputs an image) to a user through an output device (or a touch screen).
The resistance module 4 includes: a regenerative resistance configured to generate a resistance for rapid braking by consuming power of the load generating unit 21; and at least one cooling fan for preventing overheating of the regenerative resistance. It is preferable that the resistance module 4 has a box-shaped structure to isolate noise generated in the regenerative resistance.
A symbol M-1 indicates general muscular exercise equipment necessary for muscular exercise, and a symbol M-2 indicates a weight machine which is a combination of an exercise load apparatus of the present invention and the muscular exercise equipment, and a symbol S indicates a touch screen mounted to a predetermined position in the frame body 1 or to a muscular exercise equipment frame so as to allow a user to control the control box 3 or to output exercise information..
Operation of the above-configured smart exercise load apparatus A for the muscular exercise equipment according to the present invention will be described in more detail as follows.
The present invention may be used coupled to any of various muscular exercise equipment (including a plate rod type), such as a lat pulldown, a total rack, a pectrol fly, a shoulder press, a chest press, a lying leg curl, etc. Accordingly, the present invention has various coupling shapes, as shown in FIGS. 5A and 5B, thereby assembling one weight machine M.
Here, the touch screen S, which is electrically connected to the control box 3 to enable a user to control the control box 3 and which displays user exercise information acquired from operation information of the weight attachment 2 through the control box 3, may be coupled at a predetermined position in the muscular exercise equipment M-1 or may be coupled to a predetermined position in the frame body 1.
Then, muscular exercise may be carried out using the weight machine M. Before carrying out the muscular exercise, an appropriate exercise condition, such as exercise strength and the number of times of exercise (and the number of sets of exercise) that the user wishes, may be set by manipulating the control box 3.
In this state, the user sits on a bench of the muscular exercise equipment S and holds a lateral bar with two hands to carry out muscular exercise by pulling down and lifting up the lateral bar repeatedly. If the lateral bar of the muscular exercise equipment S is manipulated in this way, the wire rope W connected to the lateral bar is pulled, and an exercise load generated by the load generating unit 21 of the weight attachment 2 is delivered to the pulled wire rope W. As a result, the user may have the same exercise effect as that of lifting up a heavy weight.
In addition, the above-described overall user exercise information is collected in the control box 3 by acquiring driving information of the load generating unit 21 that is repeatedly driven and stopped in accordance with operation of the wire rope W. In addition, as tension formed in the wire rope W when the wire rope W is pulled is detected by the load cell 24 of the weight attachment 2, an exercise load amount may be measured and controlled accordingly.
Here, a load capability of the load generating unit 21 may be set in the range between 5kg and 100kg, and a unit weight may be changed up to 1kg, and a load may be changed freely even during exercise.
In the course of repeatedly lifting up the lateral bar of the muscular exercise equipment S, the wire rope W is wound around and unwound from the wind drum 211 of the load generating unit 21. In this case, as the wire rope W is inserted into the spiral-shaped alignment groove 211-1 formed in the circumferential surface of the wind drum 211, the wire rope W may be wound in a predetermined alignment state. Accordingly, operation of the wire rope W may be carried out smoothly.
In addition, the deviation preventing means 26 further provided in the weight attachment 2 may solve the problem that the wire rope W becomes unwound from the wind drum 211 due to its own rigidity when tension of the wire rope W is reduced by low-weight muscular exercise.
Specifically, as the pressing roll 261 of the deviation preventing means 26 constantly presses a portion of the wire rope W wound around the wind drum 211 (see FIG. 4C), the wire rope W is maintained in tight contact with the wind drum 211 without being deviated from the alignment groove 211-1 and thus unwinding of the wire rope W is prevented. Accordingly, irregular winding of the wire rope W, damage (peeling off) caused by the irregular winding, and degradation in a sense of exercise due to the irregular winding may be solved.
Meanwhile, user exercise information is provided in the above-described manner in which information on overall muscular exercise is collected in the micro computer of the control box 3, undergoes information computation, and is then output to the touch screen S.
In summary, according to the smart exercise load apparatus A for muscular exercise equipment of the present invention may enable user-customized muscular exercise by setting an exercise pattern (changing eccentric and concentric exercise loads), setting exercise strength (freely changing a load during exercise), and setting an exercise condition (the number of times of exercise, the number of sets of exercise, etc.) through a control of the weight attachment 2 which generates an exercise load.
In addition, user exercise capability (muscular strength measurement, constant movement, 1RM measurement, etc.) may be collected and provided by manipulating the control box 3 so that a user is allowed to set an exercise condition appropriate for the user based on the collected and provided information, and therefore, there is an advantageous effect of achieving an effective exercise result.
Furthermore, not just modularization of an apparatus structure, but also compatibility to most of muscular exercise equipment may be achieved, and therefore, there is an advantageous effect that an existing general exercise equipment can be upgraded into a smart exercise equipment added with various functions.
Although exemplary embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the subject matter and scope of this disclosure. Therefore, exemplary embodiments of the present disclosure have not been described for limiting purposes. Accordingly, it should be understood that the scope of the present invention is defined by the appended claims, and that the scope of the present invention defined by the appended claims and their equivalents is intended to cover the scope of the present invention.
As described above, a smart exercise load apparatus for muscular exercise equipment of the present invention may enable user-customized muscular exercise by setting an exercise pattern (changing eccentric and concentric exercise loads), setting exercise strength (freely changing a load during exercise), and setting an exercise condition (the number of times of exercise, the number of sets of exercise, etc.) through a control of the weight attachment which generates an exercise load, and may collect and provide user exercise capability (muscular strength measurement, constant movement, IRM measurement, etc.) by manipulating the control box, so that a user is allowed to set an exercise condition appropriate for the user based on the collected and provided information, and therefore, there is an advantageous effect of achieving an effective exercise result.
In addition, not just modularization of an apparatus structure, but also compatibility to most of muscular exercise equipment may be achieved, and therefore, there is an advantageous effect that an existing general exercise equipment can be upgraded into a smart exercise equipment added with various functions.
Furthermore, if the above-described various effects are achieved, it helps to address lack of exercise and obesity and improve physical health. In addition, as present invention may satisfy customers' increasing needs and demands related to health, it may provide competence to a relevant company to make more profits, and it may also contribute to development of related industries.

Claims

A smart exercise load apparatus (A), characterized in that said smart exercise load apparatus comprises:
a frame body (1) for modularization of the apparatus;

a weight attachment (2) mounted to the frame body (1) and configured to generate an exercise load necessary for muscular exercise and freely change the exercise load;

a control box (3) mounted to the frame body (1), electrically connected to the weight attachment (2), and configured to control exercise strength by controlling operation of the weight attachment (2) and to drive a program for collecting and providing user exercise information acquired by operation information of the weight attachment (2); and

a resistance module (4) mounted to the frame body (1), electrically connected to the weight attachment (2) and the control box (3), and configured to, in response to a signal from the control box (3), generate a regenerative resistance of braking the weight attachment (2), the resistance representing a characteristic of an operation that is frequently driven and stopped.
The smart exercise load apparatus of claim 1, further comprising a touch screen (S) mounted to the frame body (1) and electrically connected to the control box (3) so as to allow a user to control the control box (3),
wherein the touch screen (S) outputs the user exercise information acquired from operation information of the weight attachment (2) through the control box (3).
The smart exercise load apparatus of claim 1, wherein the weight attachment (2) comprises:
a load generating unit (21) configured to generate an exercise load upon unidirectional rotation and freely change the exercise load;

a plurality of first guide pulleys (22) and a second guide pulley (23) wound by a wire rope continuing from muscular exercise equipment so as to help the wire rope operate smoothly;

a load cell (24) disposed between the load generating unit (21) and any one of the plurality of the first guide pulleys (22) to measure tension of the wire rope; and

a unit bracket (25) for coupling the load generating unit, the plurality of first guide pulleys (22), the second guide pulley (23), and the load cell (24).
The smart exercise load apparatus of claim 1,
wherein a micro computer, a motor drive, a power supply, an earth leakage breaker, and a noise filter are embedded in the control box (3), and
wherein the micro computer is configured to store a number of times of exercise and a number of sets of exercise, measure muscular strength, measure 1RM, change eccentric and concentric exercise loads, change an exercise load during exercise, add and change an exercise function, and provide exercise information, collected by receiving operation information of the load generating unit and tension information of a wire rope from a load cell of the weight attachment, to a user through an output device.
The smart exercise load apparatus of claim 1,
wherein the resistance module (4) includes a regenerative resistance configured to generate a resistance for rapid braking by consuming power of the load generating unit (21), and at least one cooling fan for preventing overheating of the regenerative resistance, and
wherein the resistance module (4) has a box-shaped structure to isolate noise generated in the regenerative resistance.
The smart exercise load apparatus of claim 3, wherein the unit bracket (25) further includes a deviation preventing means (26) that allows alignment winding of a wire rope, which is to be wound around and unwound from a wind drum(211) provided in the load generating unit (21), and prevents unwinding of the wire rope.
The smart exercise load apparatus of claim 3,
wherein the load generating unit (21) includes a wind drum (211) which the wire rope is to be wound around or unwound from, and
wherein a spiral alignment groove (211-1) is formed on a circumferential surface of the wind drum (211) to allow the wire rope to be wound in a predetermined alignment state so as to help the wire rope operate smoothly.
The smart exercise load apparatus of claim 3, wherein the deviation preventing means (26) further comprises:
a pressing roll (261) in tight contact with the circumferential surface of the wind drum (211) to press the wire rope, which is to be wound around or unwound from the wind drum (211), so as to allow alignment winding of the wire rope and to prevent unwinding of the wire rope from the wind drum (211) even when the wire rope is loosen;

a hinge arm (262) having a front end hinge-coupled to the pressing roll, and disposed at a position where the pressing role is allowed to press a winding portion of the wire rope;

a hinge bracket (263) for hinge-coupling of the other end of the hinge arm; and

a spring (not shown) providing elasticity to the hinge arm so as to allow the hinge arm to rotate in a direction of pressing one surface of the wire rope.