KR20160143402A

KR20160143402A - Backbone Stretching Device

Info

Publication number: KR20160143402A
Application number: KR1020150080061A
Authority: KR
Inventors: 유장석
Original assignee: 유장석
Priority date: 2015-06-05
Filing date: 2015-06-05
Publication date: 2016-12-14
Also published as: KR101728714B1

Abstract

The present invention relates to a spine stretching device. The spine stretching device according to an embodiment of the present invention comprises: a back supporting unit which supports an upper body including a users waist; a support frame unit which is positioned under the back supporting unit and is coupled with the back supporting unit to support the back supporting unit; and an actuator unit which is mounted on the support frame unit to be coupled with the back supporting unit and the support frame unit, wherein the actuator unit assists the back supporting unit such that the back supporting unit rotates by a predetermined angle around a coupling portion between the back supporting unit and the support frame unit. The support frame unit supports the back supporting unit such that at least a portion of the back supporting unit is positioned at a height corresponding to a length of a lower body of the user, and the back supporting unit can rotate by a predetermined angle around a coupling axis between the back supporting unit and the support frame unit such that user is supported by the back supporting unit while being lifted off the ground. Therefore, stretching is performed while a weight is distributed in two direction upwards and downwards from a lumbar of the user, which improves a release of a bone and a muscle around a spine and the lumbar of the user.

Description

BACKBONE STRETCHING DEVICE [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretching mechanism, and more particularly, to a spine stretching mechanism capable of stretching a waist in both directions of an upper side and a lower side with respect to a waist, and assisting the health care of a user.

Modern people are being chased by their busy daily life, and the opportunities to have access to various sports are diminishing. As a result of lack of exercise due to this, various diseases are increasingly affected. Especially, in the case of workers, students, housewives who spend a long time in a computer or sitting for a long time, the spine or waist becomes bent or shrunk, and the posture becomes unstable, so that the user feels fatigue easily. The back disk, spine and musculoskeletal system Which causes severe pain and various diseases.

Various techniques have been developed and proposed for the spine stretching and the apparatus for assisting the movement.

Among these prior arts are Korean Patent Laid-Open Publication No. 10-2007-0033620 (entitled "Whole-body exercise climbing exercise apparatus, hereinafter referred to as prior art 1) and Korean Registered Utility Model No. 20-0362035 : Exercise apparatus for shoulder and spine stretching, hereinafter referred to as Prior Art 2).

According to the prior art 1, there is disclosed a technique in which a user can easily make a hard-to-hit-and-fro-wrestling so as to be a whole body exercise. However, according to the prior art 1, when the user is equipped with the posture of the wrestler, the user may feel dizziness easily because the blood rushes to the user's head, and the waist may be overloaded to cause the spinal disease to worsen .

According to Prior Art 2, since the pedestal is curved like a bow, a technique of extending the vertebra is disclosed, but since the lower body is fixed to the foot pedestal and is stretched while lying along the pedestal plate, The degree of stretching in the direction of the lower body is extremely weak compared to the degree of stretching of the lower body. As a result, the effect of stretching becomes insufficient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spine stretching mechanism capable of stretching a waist in both directions of an upper side and a lower side with respect to the waist in stretching the waist.

According to another aspect of the present invention, there is provided a spine stretching device comprising: a backrest part for supporting an upper body including a waist of a user; A support frame part positioned below the backrest part and coupled with the backrest part to support the backrest part; And an actuator unit mounted on the support frame unit and coupled with the back support unit and the support frame unit to assist the back support unit to rotate about a portion coupled to the support frame unit by a predetermined angle; Wherein the support frame portion supports the backrest portion such that at least a portion of the backrest portion is located at a height corresponding to the length of the lower body of the user and is supported by the backrest portion while the user is spaced from the ground The back support portion may be rotated by a predetermined angle around the coupling shaft with the support frame portion.

Here, the headrest is positioned above the backrest and supports the neck or the head of the user. And a headrest support which is coupled with the headrest and the backrest between the headrest and the backrest to support the headrest.

Further, the headrest may be rotatable by a predetermined angle with respect to the headrest support, so that the user can adjust the degree to which the neck or head of the user is bent backward.

Here, the position of the headrest support, which is coupled to the backrest so that the distance between the headrest and the backrest can be adjusted corresponding to the length of the key or the neck of the user, .

Here, the backrest includes: a back sheet for supporting the back region of the user; And a waist cushion positioned on a front side of the back sheet to support the waist of the user; May be another feature of the present invention.

Further, the backrest includes a safety bar coupled to the backsheet so that the user can safely stretch the backsheet; May be further included.

Further, the backrest may be mounted on the back sheet or the safety belt, and may include a safety bag for holding the upper body of the user on the back sheet so that the upper body of the user can be brought into close contact with the back sheet or the waist cushion. May be further included.

A support unit mounted on the support frame unit to assist the user's vertebral line to be positioned above a center line bisecting the entire surface of the backsheet; May be further included.

Further, in order to adjust the distance from the lumbar support to the waist cushion in correspondence with the distance from the user's spine to the center of the lumbar vertebrae, It is also possible to make a feature of the book.

The support frame unit may include a first support frame for supporting the backrest unit; A second support frame coupled to an upper side of the first support frame and supporting the first support frame so that the first support frame stably supports the backrest; And a third support frame coupled to the upper side of the first support frame such that an upper side thereof is engaged with the back support part and is selectively embedded or overlapped with the first support frame to the lower side; May be included as another feature.

Further, in at least one of the first support frame, the second support frame, and the third support frame, at least one of a first support frame, a second support frame, And the length adjusting means is provided.

It is also preferable that the first support frame or the second support frame is provided with a folding button for interrupting the folding of the second support frame with respect to the first support frame or the expansion of the second support frame at a predetermined angle It is possible.

Here, the backrest includes: a back sheet for supporting the back region of the user; And a waist cushion positioned on a front side of the back sheet to support the waist of the user; And the upper end of the third support frame is hinged to the back sheet, and the back sheet can be folded with respect to the third support frame.

The actuator section may be formed such that the upper end thereof is hinged to the backrest section and the length is extended or shortened so that the backrest section is extended in length so that the backrest section can be unfolded or folded within a predetermined angular range with respect to the support frame section. Or shortened driving bars; And a driving controller mounted on the support frame part and coupled to a lower end of the driving rod to drive the driving rod such that the length of the driving rod is expanded or shortened.

A support unit mounted on the support frame unit to assist the user's vertebral line to be positioned above a center line bisecting the entire surface of the backsheet; Wherein the backrest comprises: a back sheet supporting the back region of the user; And a waist cushion positioned on a front side of the back sheet to support the waist of the user; Wherein the driving controller is provided with a motion sensor capable of measuring the motion of the driving rod, and a wireless communication device capable of transmitting motion information measured from the motion sensor side to an external smartphone, It is also possible to provide another feature.

Further, the radio communication apparatus provided in the safety ladder may receive control information for controlling the movement of the driving rod from an external smartphone side and transmit the control information to the driving controller, And controlling the movement of the driving bar in accordance with the received control information.

In addition, it is also possible to transmit the exercise information to an external smart device so that the user can manage the exercise information through an application of the external smart device.

Here, the wireless communication apparatus may be one of a near field communication (NFC) apparatus, a bluetooth apparatus, and a beacon apparatus.

The spinal stretching mechanism according to the present invention has an effect of increasing the degree of relaxation of the musculoskeletal region of the user's spine or lumbar region since the load is distributed in both directions of the upper and lower sides of the user's lumbar region.

In addition, since the spine stretching mechanism can be easily folded, the volume occupied by the spinal stretching mechanism can be reduced, so that the ease of movement is increased and the ease of storage is increased.

In addition, when the spine stretching mechanism according to the present invention further includes a motion sensor and a wireless communication device, the efficiency of management of the stretching motion using the smart electronic device is also increased.

1 is a perspective view schematically showing a spinal stretching mechanism according to an embodiment of the present invention.
2 is a side view schematically showing a spinal stretching mechanism according to an embodiment of the present invention.
3 is a side view schematically showing a part of a spinal stretching mechanism according to an embodiment of the present invention.
4 is a side view schematically showing a part of a spinal stretching mechanism according to an embodiment of the present invention.
5 is a front view schematically showing a part of a spinal stretching mechanism according to an embodiment of the present invention.
6 is a perspective view schematically showing a folded spine stretching mechanism according to an embodiment of the present invention.
7 is a perspective view schematically showing a folded spine stretching mechanism according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view schematically showing a spinal stretching mechanism according to an embodiment of the present invention, FIG. 2 is a side view schematically showing a spinal stretching mechanism according to an embodiment of the present invention, and FIG. FIG. 4 is a side view schematically showing a part of a spinal stretching mechanism according to an embodiment of the present invention, and FIG. 5 is a side view schematically showing a part of a spinal stretching mechanism according to an embodiment of the present invention. 6 is a perspective view schematically showing a folded spine stretching mechanism according to an embodiment of the present invention. FIG. 7 is a perspective view schematically showing a folded state of a spine stretching mechanism according to an embodiment of the present invention. Fig.

1 to 7, a spine stretching mechanism according to an embodiment of the present invention basically includes a back support unit, a support frame unit, and an actuator unit. It may further comprise a headrest and a headrest support. Or a saddle portion.

First, the backrest supports the upper body of the user including the waist of the user using the spinal stretching mechanism.

The backrest 110 includes a back sheet 110 and a waist cushion 120. The backrest 110 further includes a safety bar 300 and a safety bag 310. [

The back sheet 110 is provided to support the back region of the user. As shown in FIGS. 1 to 3, the backsheet 110 preferably has a size that can support the upper body part of the user (more specifically, the part from the user's buttocks to the shoulder to the neck of the user).

The front surface of the back sheet 110 (that is, the surface of the back sheet 110 which is in contact with the back of the user) is concavely formed so as to support the back portion of the user (the back sheet 110 has a concave cross- (Formed to be convex toward the front side (left side in the figure) of the back sheet 110 as shown in Fig. 3) in order to facilitate stretching along the user's spinal line.

The waist cushion 120 is positioned on the front side of the back sheet 110 and is provided to support the waist of the user. The waist cushion 120 is preferably formed to be convex on the waist side of the user so as to support the center of the lumbar vertebrae (middle portion of the lumbar vertebrae) so that the lumbar vertebrae can be stretched.

The safety bar 300 is provided to allow the user to stretch safely and is coupled to the back sheet 110 as shown in FIGS. During stretching, the user can take the posture more stably by gripping the safety bar 300 by hand.

The safety bag 310 is mounted on the back sheet 110 or the safety bar 300. The safety bag 310 holds the user's upper body on the back sheet 110 so that the upper body of the user can be brought into close contact with the back sheet 110 or the waist cushion 120. As shown in the drawing, when it is mounted across the abdomen of the user, it is preferable that the abdominal region of the user is appropriately held like a seatbelt, thereby enhancing safety or stability in the user's stretching motion.

Next, the support frame portion is positioned on the lower side of the backrest portion, and is hinged to the backrest portion (235) to support the backrest portion.

The support frame unit includes a first support frame 210, a second support frame 220, and a third support frame 230.

As shown in the drawing, the first support frame 210 serves as a base for supporting the backrest. The first support frame 210 is coupled to the second support frame 220 at one end. Since the first support frame 210 must support the weight of the backrest and the user, it is preferable that the first support frame 210 is made of a material having a high hardness and a light weight.

The second support frame 220 is coupled to the upper side of the first support frame 210 (that is, one end of the first support frame 210), and the first support frame 210 stably supports the backrest The first support frame 210 is supported.

The upper side of the third support frame 230 is coupled with the back support unit, and the lower side of the third support frame 230 is coupled to the upper side of the first support frame 210. And is preferably coupled to the first support frame 210 so as to be selectively embedded or superimposed.

At least one of the first support frame 210, the second support frame 220 and the third support frame 230 may be provided with an upper end portion of the third support frame 230 from the lower end of the first support frame 210, It is preferable that a length adjusting means is provided for selectively adjusting the length of each of the first to fourth lines.

As an example of such a length adjusting means, there may be a form in which a length adjusting knob 215 as shown in FIGS. 1 and 2 is provided in the second support frame 220. The length adjusting knob 215 may be inserted into the groove formed in the third support frame 230 through a part of the first support frame 210 so that the third support frame 230 is fixed.

When the length of the first support frame 210 or the length of the third support frame 230 is adjusted, the first support frame 210 and the second support frame 210 can be selectively embedded or superimposed on the first support frame 210, The length from the lower end of the third support frame 230 to the upper end of the third support frame 230 can be selectively adjusted so that the length can be adjusted according to physical conditions such as the user's key.

The first support frame 210 or the second support frame 220 may be folded or folded at a predetermined angle with respect to the first support frame 210, A button 225 is preferably provided.

The second support frame 220 may be provided with a folding button 225 as shown in FIGS. 1 and 2. When the folding button 225 is pressed, the second support frame 220 The first support frame 210 and the second support frame 220 can be folded as shown in FIG. 6 when folded toward the first support frame 210 side.

Further, it is preferable that the third support frame 230 is hinged to the back sheet 110. 2 and 7, when the upper end of the third support frame 230 is hinged to the back sheet 110, the third support frame 230 is rotated about the hinge connection 235, So that the back sheet 110 can be folded.

Therefore, as shown in FIG. 2, the back sheet 110 in close contact with the user's upper body can be folded with respect to the third support frame 230. That is, the back sheet 110 can be folded back. Thus, the user can stretch the lumbar vertebrae. 6 and 7, the back sheet 110 may be folded with respect to the third support frame 230. [

Thus, the support frame portion supports the backrest portion such that at least a part of the backrest portion is located at a height corresponding to the length of the user's lower body. 2), and the backrest is supported by the backrest portion in such a manner that the backrest is hinge-coupled with the support frame portion (more specifically, between the back sheet 110 and the third frame, (See FIG. 2) around the center of the backrest 235 (see FIG. 2). As shown in FIG. 2, the backrest is turned backward so that the user's feet are spaced apart from the ground. (The head side direction) of the user and the lower side (the foot side direction) of the user with respect to the center of the lumbar vertebra, and is stretched in both directions (head side and foot side) about the lumbar vertebrae . Thus, the waist portion of the user can be relaxed sufficiently.

The actuator is attached to the support frame part and is coupled to the back support part and the support frame part, and assists the back support part to rotate about a part coupled with the support frame part by a predetermined angle.

The actuator unit 400 includes a driving rod 420 and a driving controller 410.

The upper end of the glove bar 420 is hinged to the backrest. 2 to 4 schematically show the upper end of the ball bar 420 hinged to the rest of the backrest.

2 and 6 to 7), the length of the driving bar 420 is increased so that the backrest can be folded (see Figs. 1 and 2) within a predetermined angular range with respect to the support frame portion Or shortened.

The drive controller 410 is mounted on the support frame portion (as referenced in FIGS. 1 and 2) and is coupled to the lower end of the drive rod 420 and is driven to extend or shorten the length of the drive rod 420 . Here, the air pressure using the rotational force of the motor or the air pressure using the electric energy can be used as a driving force for extending or shortening the length of the driving rod 420.

As shown in FIG. 2, as the length of the driving bar 420 of the actuator unit is increased or shortened, a user who is in close contact with the back sheet 110 can be stretched or stretched about his / her back.

Such a spine stretching mechanism may further include a saddle portion.

The saddle portion is mounted on the support frame portion. As shown in FIGS. 1 to 5, the retention part 500 may be mounted on the third support frame 230 of the support frame part. And the backsheet 500 assists the user's vertebral line to be located above the imaginary center line bisecting the front surface of the backsheet 110, as shown in FIG.

In order to adjust the distance d from the safety catch 500 to the waist cushion 120 in correspondence with the distance from the user's coccyx to the center of the lumbar vertebrae, It is preferable that the position adjusting means is provided on the seat 500 so that the position of the seat 500 can be adjusted. A position adjusting knob 525 as an example of the position adjusting means is exemplarily shown in Fig.

The backrest 500 is mounted to the third support frame 230 of the support frame part through the position adjusting knob 525 and the waist cushion 120 is lifted from the backrest 500 using the position adjusting knob 525. [ So that the center of the waist cushion 120 is aligned with the center of the user's lumbar vertebrae.

4, an inner shaft 520 of the inner shaft 500 is a member provided to enable the inner shaft 500 to be stably supported and mounted on the third support frame 230, It is preferable that the user has a predetermined length so as to be placed at a position between the groin of the user and can stand up even when the weight of the user is loaded on the secured portion 500.

On the other hand, a configuration including the headrest 610 and the headrest support 620 is also desirable.

The headrest 610 is positioned on the upper side of the backrest portion. And supports the user's neck or head as shown in Figs. 2 to 3.

The headrest support 620 is coupled with the headrest 610 and the backrest between the headrest 610 and the backrest 610 to support the headrest 610 as shown in Figs.

Here, the headrest 610 is coupled to the headrest support 620 so as to be rotated by a predetermined angle (see FIG. 3), thereby adjusting the degree to which the user's neck or head is turned backward.

A headrest support (not shown) is attached to the backrest so that the distance between the headrest 610 and the backrest can be adjusted in accordance with the user's physical condition such as the length of the user's key or neck 620 can be adjusted. Such a headrest 610 helps maintain the shape of the S line of the vertebrae.

3, the headrest support base 620 is raised upward by a predetermined length through a knob 635 that joins the headrest support base 620 and the back sheet 110 of the back support unit The position of the headrest support base 620 can be adjusted by fixing it or by lowering it downward by a predetermined length and fixing it. And the headrest 610 is coupled to the headrest support 620, so that the position of the headrest 610 is adjusted as a result.

If necessary, the headrest 610 may be separated from the back sheet 110 by separating the headrest 610 from the spinal stretching mechanism.

Such a spinal stretching mechanism allows the user to stretch to relax the spine.

As described above, the spinal stretching mechanism according to the embodiment of the present invention can minimize the volume by folding as shown in FIGS. 6 and 7, if necessary.

That is, the second support frame 220 is folded toward the first support frame 210 while the folding button 225 is pressed. Then, the positioning knob 500 is released from the third support frame 230 or folded to the third support frame 230 side. Next, the length adjusting knob 215 is loosened to push the third support frame 230 toward the first support frame 210 side. Therefore, the length from the lower end of the first support frame 210 to the upper end of the third support frame 230 is greatly reduced.

Next, when the back sheet 110 is folded toward the third support frame 230 with the hinge connection between the back sheet 110 and the third support frame 230 as a center, as shown in FIGS. 6 and 7, So that the volume of the spinal stretching mechanism is greatly reduced. Therefore, it becomes very easy to handle during storage or transportation. 6 shows a folded state after separating the headrest 610 and the headrest support 620 from the back sheet 110 and Fig. 7 shows the headrest 610 and the headrest support 620 ) Without folding it.

The head rest and the head rest supporter may be separated as shown in FIG.

The spine stretching mechanism as described above may further include the following configuration.

A motion sensor (not shown) capable of measuring the motion of the driving rod 420 is provided on the driving controller 410 and motion information measured from the motion sensor side is transmitted to the side of the smart device (Not shown) is also desirable.

For example, it is preferable that the motion sensor can detect the length of the driving bar 420 is shortened or extended to thereby grasp the number of stretching movements and the like, and transmit the information to the external smart device through the wireless communication device .

The external smart device receives the information from the wireless communication device provided in the security unit 500 and displays it in a database so that the user can know the information.

The wireless communication device provided in the security unit 500 may receive control information for controlling the movement of the driving bar 420 from an external smart device and transmit the control information to the driving controller 410. The driving controller 410 controls the movement of the driving rod 420 according to the control information transmitted from the wireless communication device. Accordingly, the user can also control the movement of the spinal stretching mechanism according to the embodiment of the present invention by using a smart electronic device such as an external smart phone.

The user may operate the stretching mechanism using a smart device such as a smart phone through the motion sensor provided in the driving controller 410 and the wireless communication device provided in the security unit 500, And time are transmitted to an external electronic device such as a smart phone, thereby helping the user's health care.

As described above, the wireless communication device provided in the security unit 500 may be any one of an NFC (near field communication) device, a bluetooth device, and a beacon device.

As described above, since the spine stretching mechanism according to the present invention spreads the load in both the upward and downward directions with respect to the lumbar vertebrae of the user, stretching is performed so that the degree of relaxation of the musculoskeletal region of the user's spine or lumbar region is increased There are advantages.

In addition, since the spine stretching mechanism can be easily folded, the volume of the spine stretching mechanism can be reduced, so that the ease of movement is increased and the ease of storage is increased.

In addition, if the spine stretching mechanism according to the present invention further includes a motion sensor and a wireless communication device, the efficiency of management for a stretching motion may be enhanced by using a smart electronic device.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the scope of the present invention is to be construed as being limited only by the embodiments, and the scope of the present invention should be understood as the following claims and their equivalents.

110: back sheet 120: waist cushion
210: first support frame 215: length adjusting knob
220: second support frame 225: folding button
230: Third Support Frame
300: safety belt 310: safety belt
410: drive controller 420:
500: not in the book 520: not in the pole
525: Positioning knob 610: Headrest
620: Headrest support

Claims

A backrest supporting the upper body including the waist of the user;
A support frame part positioned below the backrest part and coupled with the backrest part to support the backrest part; And
An actuator unit mounted on the support frame unit and coupled to the back support unit and the support frame unit, the actuator unit supporting the back support unit to rotate by a predetermined angle about a portion coupled to the support frame unit;
, &Lt; / RTI &
The support frame portion supports the backrest portion so that at least a part of the backrest portion is located at a height corresponding to the length of the lower body of the user,
Wherein the backrest portion is rotatable about a coupling axis with the support frame portion by a predetermined angle such that the backrest is supported by the backrest portion while the user is spaced from the ground.

The method according to claim 1,
A headrest positioned above the backrest and supporting the neck or head of the user; And
Further comprising: a headrest support which is coupled to the headrest and the backrest between the headrest and the backrest to support the headrest.

3. The method of claim 2,
Wherein the headrest is coupled to the headrest support so as to be rotatable by a predetermined angle to adjust the degree of the user's neck or head being turned back.

3. The method of claim 2,
Characterized in that the position of the headrest support, which is coupled to the backrest so that the distance between the headrest and the backrest can be adjusted corresponding to the length of the key or neck of the user, Stretching mechanism.

The method according to claim 1,
Wherein the back-
A back sheet supporting the back region of the user; And
A waist cushion positioned on the front side of the back sheet to support the waist of the user; Wherein the spine stretching mechanism comprises:

6. The method of claim 5,
Wherein the back-
A safety bar coupled to the backsheet so that the user can safely stretch; Further comprising: a spine-stretching mechanism.

The method according to claim 6,
Wherein the back-
A safety bag attached to the back sheet or the safety table for holding the upper body of the user on the back sheet so that the upper body of the user can be brought into close contact with the back sheet or the waist cushion; Further comprising: a spine-stretching mechanism.

6. The method of claim 5,
A support unit mounted on the support frame unit to assist the user's vertebral line to be positioned above a center line bisecting a front face of the back sheet; Further comprising: a spine-stretching mechanism.

9. The method of claim 8,
The position adjusting means adjusts the position of the saddle portion mounted on the support frame portion in order to adjust the distance from the lug to the waist cushion in correspondence with the distance from the user's spine to the center of the lumbar region, Wherein the spine stretching mechanism is provided with a spine stretching mechanism.

The method according to claim 1,
The support frame unit includes:
A first support frame on which the backrest is supported;
A second support frame coupled to an upper side of the first support frame and supporting the first support frame so that the first support frame stably supports the backrest; And
A third support frame coupled to an upper side of the first support frame such that an upper side thereof is coupled to the back support unit and a lower support member is selectively embedded or overlapped with the first support frame; Wherein the spine stretching mechanism comprises:

11. The method of claim 10,
At least one of the first support frame, the second support frame, and the third support frame has a length adjustment for selectively adjusting the length from the lower end of the first support frame to the upper end of the third support frame, Wherein the means for stretching the vertebrae is provided.

11. The method of claim 10,
In the first support frame or the second support frame,
Wherein a folding button is provided for interrupting folding or unfolding of the second support frame with respect to the first support frame at a predetermined angle.

11. The method of claim 10,
Wherein the back-
A back sheet supporting the back region of the user; And
A waist cushion positioned on the front side of the back sheet to support the waist of the user; / RTI >
Wherein an upper end of the third support frame is hinged to the back sheet, and the back sheet can be folded with respect to the third support frame.

The method according to claim 1,
The actuator unit includes:
A driving bar having an upper end hinged to the backrest portion and extended or shortened in length so that the backrest can be expanded or folded within a predetermined angular range with respect to the support frame portion; And
And a driving controller mounted on the support frame part and coupled to a lower end of the driving rod to drive the driving rod to extend or shorten the length of the driving rod.

15. The method of claim 14,
A support unit mounted on the support frame unit to assist the user's vertebral line to be positioned above a center line bisecting a front face of the back sheet; Further comprising:
Wherein the back-
A back sheet supporting the back region of the user; And
A waist cushion positioned on the front side of the back sheet to support the waist of the user; / RTI >
Wherein the drive controller is provided with a motion sensor capable of measuring the motion of the driving bar,
And a wireless communication device capable of transmitting movement information measured from the motion sensor side to an external smart device is provided in the safety device.

16. The method of claim 15,
Wherein the radio communication apparatus provided in the security section comprises:
Receives control information for controlling the movement of the driving bar from an external smart device side and transmits the control information to the driving controller,
And the drive controller controls the movement of the driving bar in accordance with the control information transmitted from the radio communication device.

16. The method of claim 15,
The radio communication apparatus includes:
A near field communication (NFC) device, a bluetooth device, and a beacon device.