Posture correction and lumbar traction functional chair

Abstract

The posture correction and lumbar traction functional chair according to the present invention includes a seat plate having legs connected to the lower part thereof and supporting the buttocks of a user when the user is seated; a backrest plate support base rotatably provided at the rear end of the seat plate; a backrest plate rotatably provided on the front of the backrest plate support base about a horizontal axis so that the user can maintain a sitting or lying position, the backrest plate having a curved surface corresponding to the user's shoulder line and spinal line and having a head support base at its upper end; and a traction drive device provided so that the backrest plate can move along the backrest plate support base.

Description

[Technical field]

[0001] The present invention relates to a posture correction and lumbar traction functional chair, and more particularly to a posture correction and lumbar traction functional chair for the neck and waist of a seated person, which is applicable to office chairs, automobile chairs, aircraft chairs, medical functional chairs and all other chairs. [Background technology]

[0002] In recent years, with the development of information and communication technology brought about by the Fourth Industrial Revolution, young people and modern people use information and communication media such as computers and smartphones on a daily basis at school and in the workplace, which means that they spend most of their time sitting in an unstable position or living with poor posture, resulting in spinal deformities and body imbalances, causing many health problems.

[0003] Such poor posture can cause a variety of physical ailments, including tension and pain in the neck and shoulder muscles, headaches, neck and lumbar hernias, scoliosis, frozen shoulder (shoulder and arm pain), chronic fatigue, and digestive disorders. In particular, poor posture such as bowing the head forward or bending the waist can cause gravity (body weight) to be biased, preventing the spine from forming a normal curve and causing each vertebra to retreat and move out of its original position, resulting in spinal disorders and impeding blood circulation.

[0004] According to a study by a scholar named Nachemson, when a person is standing upright, the pressure exerted on a lumbar hernia by gravity is 100; when lying down properly, the pressure is the lowest at 25; when sitting on a chair without a backrest, the pressure is 140; and when bending forward by 20 degrees while sitting or standing, the pressure increases by almost double to 180 and 150, respectively.

[0005] In particular, for adolescents, sitting at a desk for long periods of time leads to reduced physical activity, lack of exercise, decreased physical strength, and imbalance in body shape due to unstable posture, which can lead to lower back pain and scoliosis. Dissatisfaction with appearance during adolescence, a period of physical and mental transition, can lead to a loss of self-identity and weakened mental health.

[0006] A technology related to a functional chair to solve the above problems was proposed in Korean Utility Model Publication No. 2021-0001659.

[0007] However, since Patent Document 1 is limited only to pelvic correction, there is a problem in that its function and effect in correcting posture and improving spinal disorders is limited. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Korean Published Utility Model Patent No. 2021-0001659 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made to solve the above problems, and aims to provide a posture correction and lumbar traction functional chair that corrects posture and improves spinal disorders, properly prevents and corrects poor posture in young people, and enables people with spinal disorders and the general public to stay healthy even after spending long periods of time in a chair. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, the posture correction and lumbar traction functional chair according to the present invention includes a seat plate having legs connected to the lower part thereof to support the buttocks of the user when seated; a backrest plate support base rotatably provided at the rear end of the seat plate; a backrest plate formed to have a curved surface at the front of the backrest plate support base and rotatably provided around a horizontal axis so that the user can maintain a seated or lying position, and having a head support base at the upper end; and a traction drive device provided so that the backrest plate can move along the backrest plate support base.

[0011] The head support can be rotated up and down and can have a detachable headband on both sides.

[0012] The backrest plate may include a fastening band having concave or convex sides, bent so as to be supported by the shoulders when passing through both upper sides and crossing both lower sides to connect both ends and cover the waist; a shoulder rest that is rotatably provided in a groove formed on both sides adjacent to the fastening band, or is positioned on both sides of the user by being fastened with a bolt or by being connected to one of a plurality of holes; and a waist fastening band provided on both upper and lower sides of the lower side of the shoulder rest.

[0013] The traction drive device may include a drive unit that is detachably provided on one armrest provided on both sides of the seat plate and moves the backrest plate up and down by manually moving it left and right, or automatically provides driving force by an automatic motor and an operation switch; a drive shaft that is rotatably supported on the upper and lower parts of the backrest plate support base and has a connecting joint spirally fastened thereto so as to move the backrest plate up and down in the rotation direction; and a flexible shaft that connects the drive unit and the drive shaft.

[0014] The seat may include a number of lower body bands that support the hips and legs.

[0015] When the backrest plate is rotated, the lumbar vertebrae can be pulled by the traction drive device when the user is lying down, and the tension can be controlled in stages by attaching a tension measuring sensor between the seat plate and the safety support base extending from the rear surface of the backrest plate support base while being supported on the ground.

[0016] The seat plate may include a fixed seat plate and a cushion seat plate that is slidably movable above the fixed seat plate.

[0017] A tension belt is connected to the rear end of the cushion seat plate and the lower end of the adjacent backrest plate, so that the cushion seat plate can be moved in conjunction with the backrest plate. Effect of the Invention

[0018] According to the present invention, bands that support the user's upper and lower body are installed on the seat plate and the back plate that is rotatably attached to the seat plate, and the back plate is raised by a traction drive device. With the lower body fixed, the upper body is pulled upward and the waist is stretched (tracted), thereby reducing the size of the disc (intervertebral disc), releasing the pressure on the spinal nerves and muscles caused by the protruding disc (intervertebral disc), correcting and preventing bad posture of the neck and waist, and making it possible to spend daily time in a chair with the posture corrected. This has the effect of preventing neck and waist diseases that occur due to sitting in a chair for long periods of time, and preventing neck hernia, turtle neck, straight neck, scoliosis, stenosis, hernia, etc., and relieving pain.

[0019] In addition, the headband pulls the user's chin and forehead into the head support, maintaining the correct posture of the neck (cervical vertebrae), which has the functional effect of correcting and preventing baldness and crooked neck. In this position, the head can be moved up and down and left and right, allowing for more flexibility when studying or working.

[0020] In addition, the seat plate is composed of a fixed seat plate and a cushion seat plate that can slide above the fixed seat plate, and the rear end of the cushion seat plate and the lower end of the backrest plate are connected by a tension belt, adding the function of the cushion seat plate moving in the same direction as the movement of the backrest plate, which has the effect of facilitating forward and backward movement of the waist. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a side view showing the posture correction and waist traction functional chair of the present invention. [Diagram 2] 1 is a front view and a usage state view showing the head support stand of the posture correction and waist traction functional chair of the present invention. [Diagram 3] FIG. 2 is a side view showing the state in which the backrest plate rotates on the backrest plate support base in the posture correction and lumbar traction functional chair of the present invention. [Figure 4] 1 is a front and rear view of the posture correction and lumbar traction functional chair of the present invention, showing the state in which the backrest board is provided with a tightening band and a shoulder rest. FIG. [Diagram 5] FIG. 2 is a side view showing the state in which the backrest plate is rotated on the shoulder rest in the posture correction and lumbar traction functional chair of the present invention. [Figure 6] FIG. 2 is a side view showing the traction drive device in the posture correction and waist traction functional chair of the present invention. [Figure 7] 4 is a cross-sectional view showing a coupling structure of a connecting joint that connects a backrest support base and a backrest in a traction drive device provided in the posture correction and waist traction functional chair of the present invention. FIG. [Figure 8] 1 is a side view showing the posture correction and lumbar traction functional chair of the present invention, in which the backrest is in an upright or reclined position; FIG. [Figure 9] 1 is a side view showing the posture correction and lumbar traction functional chair of the present invention, in which the backrest is in an upright or reclined position; FIG. [Figure 10]FIG. 2 is a side view showing a state in which the cushion seat plate of the seat plate is adapted to slide and the rear end of the cushion seat plate and the lower end of the backrest plate are connected by a tension belt in the posture correction and lumbar traction functional chair of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The above objects, features and other advantages of the present invention will become more apparent from the detailed description of preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, a posture correction and waist traction functional chair according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0023] 1 to 10, a posture correction and lumbar traction functional chair 100 according to an embodiment of the present invention includes a seat plate 110, a back plate support base 120, a back plate 130 and a traction drive device 140.

[0024] 1, 3, 8 and 9, legs 112 are connected to the lower part of the seat plate 110, and the seat plate 110 is formed with an area corresponding to the area of ​​the seat plate 110 so as to support the buttocks of a user when the user sits down. At this time, wheels may be provided to the lower part of the legs 112, so that the chair can be moved.

[0025] The seat plate 110 also has armrests 114 positioned upright on both sides so that the user can place their elbows on them.

[0026] Further, a groove 1140 is formed on the upper surface of one side of the armrest 114, and an adjustment plate 1420 on which the driving unit 142 of the traction drive unit 140 is supported is detachably provided within the groove 1140.

[0027] Meanwhile, lower body bands 116 are provided on the front and rear of the seat plate 110 to support the hips and legs, and when the user lies down and pulls his / her waist, they function to fix the lower body to the seat plate 110. At this time, the lower body bands 116 are made of the same elastic and sturdy material as the straps of a school bag, and both ends are finished with Velcro tape, which can be connected or separated.

[0028] It can be said that the present invention performs the functions of pulling the waist by reducing the weight (body weight) while pulling the backrest board 130 upward, and moving the backrest board 130 back and forth while correcting (banding) posture. However, since the seat board is fixed when the backrest board 130 moves back and forth, the effect of the movement is reduced. To solve this problem, a function is added in which the seat board 110 moves in the same direction as the movement direction of the backrest board 130, thereby facilitating the forward and backward movement of the waist.

[0029] For this purpose, as shown in FIG. 10, the seat plate 110 of another embodiment includes a fixed seat plate 110a and a cushion seat plate 110b that is slidably movable above the fixed seat plate 110a.

[0030] In other words, rails (not shown) that move in the front-to-back direction above and below the opposing surfaces of the seat plate 110 are installed in the seat plate 110 while the fixed seat plate 110a and the cushion seat plate 110b are separated vertically, allowing the cushion seat plate 110b to move naturally along the moving direction of the backrest plate 130.

[0031] A tension belt 111 is provided on the rear end of the cushion seat plate 110b and the lower end of the adjacent backrest plate 130. At this time, the tension belt 111 functions to measure tension when the user lies down and pulls the waist (see FIG. 9) and to facilitate the movement of the cushion seat plate 110b when the backrest plate 130 is moved forward and backward.

[0032] In addition, a seat plate fixing jack 110c is provided on the side of the cushion seat plate 110b, which functions to position and fix the cushion seat plate 110b to the fixed seat plate 110a when pulling the waist. Meanwhile, the seat plate fixing jack 110c can be operated by an electric motor or the like.

[0033] As shown in Figures 1, 3, 8 and 9, the backrest support base 120 is rotatably mounted at the rear end of the seat plate 110 and guides the forward direction of the backrest plate 130 so that it can rotate and / or rise and fall.

[0034] In other words, the backrest board support base 120 serves as a support base that supports the weight of a person when it is lifted upward through the backrest board 130, connects the connecting ring 1302 of the backrest board 130 to the connecting joint 148 with a connecting fastening bolt B, enables the backrest board 130 to move forward and backward (for example, 20° to 25°), and after the connecting joint 148 is inserted into the backrest board support base 120, fixes the connecting joint 148 so that it does not move during vertical movement and fixes the drive shaft 144 up and down.

[0035] Furthermore, the backrest plate support base 120 has a fixed portion 122 fixed to the center of the rear end of the bottom surface by a bolt or the like, and is provided so as to be rotatable back and forth around a horizontal axis at the end of the fixed portion 122.

[0036] The backrest plate support base 120 is provided with bearings 1440 that support both ends of a drive shaft 144 that rotates within the upper and lower protrusions while having upper and lower ends protruded therefrom, and lateral tightening bolts 124a, 124b are provided at positions that do not interfere with the bearings 1440.

[0037] At this time, the fastening bolts 124a, 124b can control the rotation angle of the backrest plate 130, which rotates back and forth. That is, when the fastening bolts 124a, 124b are all moved backward, the rotation angle of the backrest plate 130 increases, and when the fastening bolts 124a, 124b are all moved forward, the rotation angle of the backrest plate 130 decreases.

[0038] Therefore, when the fastening bolts 124a, 124b of the backrest board support base 120 are fastened, the backrest board 130 is fixed so as not to move forward or backward, and when the fastening bolts 124a, 124b are released, the backrest board 130 can move forward or backward (for example, 20° to 25°). Under normal circumstances, the fastening bolts 124a, 124b are released for use, and when the upper body is raised upward or the waist is pulled, the fastening bolts 124a, 124b are fastened (fixed) for use.

[0039] The backrest plate support base 120 is provided with a safety support base 126 that is rotatable around a horizontal axis provided at the end of the fixed part 122 and spreads out on the floor for support. At this time, the upper side of the safety support base 126 is connected to an adjustment stick 126a. Furthermore, when the backrest plate support base 120 is spread out by 180°, the adjustment stick 126a pulls the adjustment stick 126a and interferes with the lower end of the safety support base 126, and then the upper end of the elastically supported safety support base 126 rotates at the upper rear surface of the backrest plate support base 120 to spread out on the floor for support.

[0040] 1 to 5 and 7 to 9, the backrest board 130 is provided in front of the backrest board support base 120 to be rotatable about a horizontal axis S, and is formed with a curved surface to correspond to the user's shoulder line and spine line, and is provided with a connecting ring 1302 at the center of the rear surface. At this time, the backrest board 130 is provided with a head support base 132 at the upper end, and includes a tightening band 134, a shoulder rest 136, and a waist tightening band 138.

[0041] Meanwhile, the backrest plate 130 is made of reinforced plastic and mesh in the shape of an ergonomic shoulder line and S line of the spine, and the shape and size of the S line are classified according to ergonomic body types.

[0042] The connecting ring 1302 has a stepped structure with a groove formed in the center, and a horizontal hole is formed through it, and the hole and the backrest plate 130 are connected by a connecting fastening bolt B in a state where they are concentric with the horizontal hole formed in the connecting joint 148 of the backrest plate support base 120. In this way, by connecting the connecting joint 148 to the connecting ring 1302 through the connecting fastening bolt B, the connecting part serves as a rotation axis to move the backrest plate 130 up and down and forward and backward (within a range of 20° to 25°).

[0043] The head support 132 rotates up and down around one end of a connecting base provided on the rear surface, and the other end of the connecting base is provided at the center of the upper surface of the backrest plate 130 so as to be movable up and down. Through holes 1320 with a slit structure are formed on both sides, and a headband 1330 is provided detachably through the through holes 1320.

[0044] Furthermore, the head support 132 has the functional effect of maintaining the correct posture of the neck (cervical vertebrae) by tightly fitting the user's chin and forehead with the headband 1330, correcting and preventing baldness and crooked neck. In this state, the head can be moved up and down and left and right, allowing for flexible study and work.

[0045] The headband 1330 is made of a soft and elastic material and has both ends finished with Velcro (registered trademark) tape, so that both ends can be connected or separated, and it can be connected (inserted) into the through hole 1320 of the head support 132 only when necessary.

[0046] Furthermore, the backrest plate 130 has first, second and third through holes 134a, 134b and 134c with a slit structure located at a distance from each other at the top, middle and bottom positions on both ends of the upper side so that the tightening band 134 and the waist tightening band 138 can be connected, and a fourth through hole 138a with a slit structure located at a distance from each other at both ends of the lower side.

[0047] The tightening band 134 is provided so as to tighten both shoulders and the upper part of the waist of the user using one band. That is, the tightening band 134 passes through the first, second and third through holes 134a, 134b and 134c of the backrest plate 130 in order, and is bent to a portion connecting the first and second through holes 134a and 134b to tighten the shoulders of the user, and the two ends passing through the third through hole 134c to tighten the upper part of the waist of the user.

[0048] As shown in FIG. 5(a), the shoulder rest 136 is rotatably mounted on a shaft 1360 at its lower end within a groove 136a formed on both sides between the second and third through holes 134b, 134c, and is positioned on both sides of the user when unfolded.

[0049] Here, the shoulder strap 136 is formed in the shape of a circular bar or the like, and is retracted into the groove 136a during normal use, and is pulled out of the groove 136a while rotating it 90 degrees when in use, providing a traction force that is insufficient when pulling the user's upper body by the tightening band 134 and the waist tightening band 138 alone.

[0050] That is, the shoulder rest 136 is divided into different heights according to ergonomic body types, and when the backrest 130 is moved upward, it supports the body weight together with the upper body bands, i.e., the tightening band 134 and the waist tightening band 138, and serves as a central portion that lifts the upper body upward.

[0051] In addition, the shoulder rest 136 is provided with a protective band 136' made of a material such as urethane that can be attached (detached) to protect the sides from friction and pressure when the shoulder rest 136 is in use.

[0052] Furthermore, as shown in FIG. 5(b), the shoulder rest 136 can be selected according to the body type by fastening a bolt or inserting the shoulder rest into one of a plurality of holes 136a'.

[0053] The waist tightening band 138 is tightened around the user's waist with both ends passing through the fourth through-holes 138a.

[0054] The fastening band 134 and the waist fastening band 138 are made of a material that is elastic and strong, such as the straps of a school bag, and both ends are finished with Velcro (registered trademark) tape, so that the two ends can be connected or separated.

[0055] As shown in Figures 1 and 6 to 9, the traction drive device 140 is provided to enable the backrest plate 130 to move along the backrest plate support base 120 and to traction the upper body of the user, and includes a drive section 142, a drive shaft 144, a flexible shaft 146 and a connecting joint 148.

[0056] The driver 142 is detachably provided in the groove 1140 of the armrest 114 on one side of the seat plate 110 while being fixed to the adjustment plate 1420, and provides a driving force manually or automatically. In this case, the driver 142 is an adjustment stick that is rotated manually to provide power. If the driver is automatic, a tension measuring sensor (not shown) that can measure the degree of pulling by the user is attached, and the operating power can be generated by an electric motor or the like. That is, the user can pull the waist while lying down, and by attaching a tension measuring sensor, the tension can be controlled stepwise to match the waist pulling strength to the patient's condition (possible by attaching a tension belt and a measuring sensor, medical auxiliary device).

[0057] At this time, a tension belt 111 and a measurement sensor (not shown) are appropriately attached to adjust and control the traction force in stages according to the weight and symptoms of the user when using the electric motor. The tension belt 111 is connected and attached between the rear end of the seat plate 110 and the lower end of the backrest plate 130, and the measurement sensor detects the degree of tension applied to the tension belt 111.

[0058] The drive shaft 144 is a spiral shaft rotatably supported on the upper and lower sides of the back of the backrest plate support base 120 , and the upper and lower ends are rotatably supported by bearings 1440 .

[0059] The flexible shaft 146 connects the lower end of the drive shaft 144 to the adjustment plate 1420 to which the drive unit 142 is connected, and is configured so that power is transmitted even when the adjustment plate 1420 is separated from the armrest 114.

[0060] In this manner, when pulling the waist with the backrest plate 130 spread backward by 180°, the flexible shaft 146 detaches the adjustment plate 1420 and operates it by the drive unit 142 in a comfortable position.

[0061] The connecting joint 148 has a nut structure screwed to the drive shaft 144, and moves in one direction or the other along the rotation direction of the drive shaft 144 to move the backrest plate 130 up and down or forward and backward.

[0062] At this time, the connecting joint 148 is formed in a stepped structure at the front to allow for concave-convex coupling with the connecting ring 1302 of the backrest plate 130, and has a through hole formed in the horizontal direction so that the connecting fastening bolt B passes through, and a groove 1482 formed at the rear so that the backrest plate support base 120 can be coupled. The groove 1482 has protrusions formed on both sides of the end, and is coupled to stepped grooves formed in the height direction on both sides of the rear surface of the backrest plate support base 120. The connecting joint 148 is formed in the center with a spiral hole passing through in the vertical direction so that the drive shaft 144 can be spirally coupled.

[0063] Hereinafter, the operation process of the posture correction and waist traction functional chair 100 according to the present invention will be described.

[0064] First, when the chair is used for correcting posture of the neck and lower back, the user sits on the seat plate 110.

[0065] Next, the drive unit 142 is rotated left and right to align (fit) the S-line of the backrest plate 130 with the S-line of the spine, adjust the height of the shoulder rest 136, and align the shoulder rest 136 with the user's side when seated.

[0066] Next, the user's head is brought into close contact with the head support 132 while tightening (pulling) the headband 1330 (in this state, the head can be moved up and down and left and right).

[0067] Next, while tightening (pulling) the tightening bands 134 corresponding to the user's shoulders and the waist tightening band 138 corresponding to the user's waist, the user presses the back (spine) against the S-line of the backrest board 130 (in this state, the user of the chair can move the upper body back and forth (within a range of 20° to 25°), allowing the user to study or work while maintaining a corrected posture).

[0068] In contrast, when the chair is used for neck and waist posture correction and waist traction, the user sits on the seat plate 110 .

[0069] Next, the drive unit 142 is rotated left and right to align (fit) the S-line of the backrest plate 130 with the S-line of the spine, adjust the height of the shoulder rest 136, and align the shoulder rest 136 with the user's side when seated.

[0070] Next, the user's head is brought into close contact with the head support 132 while tightening (pulling) the headband 1330 (in this state, the head can be moved up and down and left and right).

[0071] Next, while tightening (pulling) the tightening bands 134 corresponding to the user's shoulders and the waist tightening band 138 corresponding to the lumbar vertebrae, the back (spine) is brought into close contact with the S-line of the backrest board 130 (in this state, the user of the chair can move the upper body back and forth (20° to 25°), allowing them to study or work while maintaining a corrected posture).

[0072] Next, the shoulder rest 136 is opened at a right angle and placed under the user's arm.

[0073] Next, when the backrest plate 130 is moved upward while rotating the adjustment stick, which is the driving unit 142, left and right, the user's upper body moves upward, and the waist is pulled by the body weight (gravity). That is, when the adjustment stick rotates, the flexible shaft 146 interlocks with the driving shaft 144, and the rotation of the driving shaft 144 moves the connecting joint 148 up and down, moving the backrest plate 130 up and down, thereby moving the person's upper body up and down and reducing the load on the upper body by half.

[0074] When the user is resting and the upper body is lying down and the lower back is to be pulled, the lower body band 116 supporting the buttocks and legs is fixed to the seat plate 110 while being pulled.

[0075] Then, the adjustment plate 1420 to which the adjustment stick is fixed is pulled to separate it from the groove 1140 of the armrest 114, and then while the user is lying down, the backrest board support base 120 is rotated 90 degrees, and the safety support base 126 is spread downward and brought into contact with the ground. Then, the adjustment stick is rotated left and right to pull the user's upper body (backrest board 130) toward the head while pulling the waist.

[0076] Finally, when used as a general chair, after the user sits on the seat plate 110, the seat plate is set to fit the user's body shape by rotating the drive unit 142 left and right to align (fit) the S line of the backrest plate 130 with the S line of the spine, and by adjusting the height of the shoulder rest 136, the shoulder rest 136 is aligned with the user's armpit when seated.

[0077] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention can be embodied in other specific forms without changing the technical concept or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all respects and are not limiting. [Explanation of symbols]

[0078] 100: Posture correction and lumbar traction functional chair 110: Seat board 120: Backrest support stand 130: Backrest board 140: Traction drive 142: Drive unit 144: Drive shaft 146: Flexible shaft 148: Connecting joint

Claims

1. a seat plate to which the legs are attached and which supports the user's buttocks when seated; a backrest support base rotatably provided at the rear end of the seat plate; a backrest plate having a curved surface in front of the backrest plate support base, rotatable about a horizontal axis so that a user can maintain a sitting or lying position, and having a head support base at an upper end; and a traction drive provided to allow the backrest plate to move along the backrest plate support; The backrest plate has a concave or convex side surface, a tightening band that is bent so as to be supported on the shoulders while passing through both upper sides, and that is connected to both ends of the lower side while passing through both sides in a cross state, and is provided to cover the waist; a shoulder strap that is rotatably provided in a groove formed on both sides adjacent to the fastening band, or that is positioned on both sides of the user by bolt fastening or by coupling to one of a plurality of holes; and A posture correction and lumbar traction functional chair, comprising: lumbar tightening bands provided on both sides of the lower part of the shoulder rest, one above the other;

2. The posture correction and lumbar traction functional chair according to claim 1, wherein the head support is rotatable up and down and has a headband detachably attached to both sides.

3. a seat plate to which the legs are attached and which supports the user's buttocks when seated; a backrest support base rotatably provided at the rear end of the seat plate; a backrest plate having a curved surface in front of the backrest plate support base, rotatable about a horizontal axis so that a user can maintain a sitting or lying position, and having a head support base at an upper end; and a traction drive provided to allow the backrest plate to move along the backrest plate support; The traction drive is a driving unit which is detachably provided on one armrest provided on both sides of the seat plate and which is manually operated left and right to move the backrest plate up and down, or which automatically provides driving force by an automatic motor and an operation switch; A drive shaft that is rotatably supported on the upper and lower back surface of the backrest support base and to which a connecting joint is screw-fastened so as to move the backrest board up and down along the rotation direction; and A posture correction and lumbar traction functional chair, comprising: a flexible shaft connecting the drive unit and the drive shaft.

4. The posture correction and waist traction functional chair according to claim 1, characterized in that the seat plate includes a plurality of lower body bands for supporting the buttocks and legs.

5. a seat plate to which the legs are attached and which supports the user's buttocks when seated; a backrest support base rotatably provided at the rear end of the seat plate; a backrest plate having a curved surface in front of the backrest plate support base, rotatable about a horizontal axis so that a user can maintain a sitting or lying position, and having a head support base at an upper end; and a traction drive provided to allow the backrest plate to move along the backrest plate support; The backrest plate can pull the waist of the user lying down by the traction drive device when rotating, and a tension measuring sensor is attached between the safety support base extended from the rear surface of the backrest plate support base and the seat plate while the safety support base is supported on the ground, thereby controlling the tension in a stepwise manner.

6. a seat plate to which the legs are attached and which supports the user's buttocks when seated; a backrest support base rotatably provided at the rear end of the seat plate; a backrest plate having a curved surface in front of the backrest plate support base, rotatable about a horizontal axis so that a user can maintain a sitting or lying position, and having a head support base at an upper end; and a traction drive provided to allow the backrest plate to move along the backrest plate support; The seat plate includes a fixed seat plate and a cushion seat plate that is slidably movable on an upper side of the fixed seat plate, A posture correcting and lumbar traction functional chair, characterized in that a tension belt is connected to the rear end of the cushion seat plate and the lower end of the adjacent backrest plate, and the cushion seat plate is interlocked with the backrest plate.

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