KR101920533B1 - A reclining chair with a roller - Google Patents

Abstract

The present invention relates to a slanting chair provided with a rotating roller. More particularly, the present invention relates to a slanting chair comprising a sliding portion and a rotating portion so as to simultaneously perform inclined rotation and sliding movement in the forward and backward direction, And an angle of the user's back is increased.
According to the present invention, it is possible to prevent the side of the spine from being stiff or rigid and to strengthen the muscles of the back and pelvis, And to prevent and treat spinal diseases.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a reclining chair,

The present invention relates to a slanting chair provided with a rotating roller. More particularly, the present invention relates to a slanting chair comprising a sliding portion and a rotating portion so as to simultaneously perform inclined rotation and sliding movement in the forward and backward direction, And an angle of the user's back is increased.

The chair is classified into various types according to the difference of the details of the seat, the back mobility, the leg movement, and the means for the user to sit and work or take a rest.

Users sit in a chair for a long time in a school or a company and study or work. When they sit without changing their posture for a long time, they may deform the posture by pressing the spine, causing back pain or breathing difficulties.

Especially, the spine maintains the same shape while being pressed for a long time, so it causes back pain and the spinal muscles are stiff.

Background Art [0002] Prior arts have been disclosed in which the angle and position of a seat or a backrest can be adjusted to prevent illness or posture distortion of such a skeleton.

FIG. 1 is a perspective view showing a structure of a chair adjusting device according to the related art, and FIG. 2 is a side view showing the structure of the chair shown in FIG.

1 and 2 is characterized in that the seat plate 15 is not abruptly tilted by using a stretchable elastic member in a chair which tilts the seat back 15 back and forth.

The lower end of the coil spring 53, which is the front elastic member formed at the front of the chair, is supported so as not to come off from the chair front fixed support 93. And the upper end is supported by the upper support chain upper body 79a. The upper body 79a is screwed with the pressure regulating member 76. [

The lower portion of the pressure regulating member 76 is coupled to the handle 57 through an elongated hole in the fixed support 93. Therefore, even if a restoring elastic force is applied to restore the coil spring 53 coupled to the fixed support 93, the portion of the handle 57 is restrained by the fixed support 93.

The elastic force of the coil spring 53 sandwiched between the upper body 79a and the fixed support 93 is adjusted by adjusting the distance between them.

As described above, the rotational pressure of the seat 15 can be adjusted by several coil springs 53, so that a sharp inclination can be prevented.

However, when the seat 15 is tilted back and forth, the user's body moves forward and backward. At this time, there is no apparatus for holding the user's body or making contact with the back of the user.

KR 10-1232984 B1 KR 10-2014-0142814 A KR 20-2010-0002200 U

According to an aspect of the present invention, there is provided a seat assembly comprising a sliding part and a rotating part to simultaneously realize a tilting and a horizontal movement in a back and forth direction and a gas spring at the rear of a seat to prevent a sudden change And an oblique moving chair provided with a rotating roller for rotating the oblique moving chair.

Further, according to the present invention, a spring is provided inside the seat so that the elastic force of the spring acts on the sliding part forward or backward, thereby enabling the sliding part to return to the original position without applying a large force It is intended to provide an inclined exercise chair.

Further, according to the present invention, a rotary roller, which rotates on the back of the backrest, is provided on a link arm which is angularly adjusted, so that the rotary roller moves in the vertical direction and the back and forth direction, and a massage effect is obtained by rubbing the user's back with a rotating rotary roller It is an object of the present invention to provide a slanting chair provided with a rotating roller.

SUMMARY OF THE INVENTION The present invention, which has been devised to solve the above-mentioned problems, includes a backrest 102 made to stand in contact with a user's back; A seat plate (104) slidably moving in a back and forth direction; A height adjustment shaft 108 connected to the lower side of the seat 104; And a leg 110 installed at a lower end of the height adjusting shaft 108. The seat 104 includes a sliding portion 104a that moves back and forth in a predetermined range by weight when the user moves while sitting, And a rotation part 104b provided on the bottom surface of the sliding part 104a and rotating to be inclined forward and backward in a predetermined range in the forward and backward directions about the rotation center shaft 104c with respect to the height adjustment shaft 108 .

And a spring 104d provided between the sliding part 104a and the rotation part 104b to generate a restoring force to return the sliding part 104a to the original position after the sliding part 104a slides.

An upper connection portion 116 protruding from an upper side of the back surface of the backrest 102; A lower connection part 118 protruding from a rear end of the seat 104; And a gas spring 114 whose both ends are rotatably connected to the upper connecting part 116 and the lower connecting part 118. The gas spring 114 is disposed at a position And is delayed when the seat back 104 is tilted backward to slow down the rotation speed of the seat back 104. [

A link arm 120 rotatably connected to the upper connection part 116 and the lower connection part 118; And a rotating roller 122 installed at a center of the link arm 120 and connected to the link 120. The rotating roller 122 rotates while contacting the user's back .

And a torsion spring 124 provided around the rotation center shaft 104c formed in the rotation part 104b and generating a restoring force for bringing the rotation part 104b in a flat state when the rotation part 104b is tilted forward or backward .

According to the present invention, the pelvis is directly used by using the spring for the sliding movement of the seat plate by forward and backward inclination rotation and the movement of the center of gravity and the restoring force of the seat plate, and prevention of stiffness by movement of the back and forth of the spine, It strengthens muscles and helps to prevent and cure spinal diseases such as back pain and turtle neck.

FIG. 1 is a perspective view showing the structure of a chair inclination adjusting device according to the related art. FIG.
Fig. 2 is a side view showing the structure of the chair of Fig. 1; Fig.
3 is a perspective view illustrating a structure of a chair according to an embodiment of the present invention.
Fig. 4 is a side view showing the structure of the chair of Fig. 3; Fig.
5 is a side view showing a state in which the seat is inclined forward.
6 is a side view showing a state in which the seat back is inclined rearward.
7 is a sectional view showing a moving state of the sliding portion;
8 is a sectional view showing a change in position of a rotating roller according to a tilting angle of a seat plate.
9 is a side view showing a state in which the torsion spring is compressed according to the inclination of the seat.

Hereinafter, a "slanting chair provided with a rotating roller" (hereinafter referred to as "chair") according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a perspective view showing the structure of a chair according to an embodiment of the present invention, FIG. 4 is a side view showing the structure of the chair in FIG. 3, FIG. 5 is a side view showing a state in which the seat is inclined forward, FIG. 7 is a cross-sectional view showing a moving state of the sliding portion, and FIG. 8 is a sectional view showing a change in position of the rotating roller according to a tilting angle of a seat.

The chair 100 of the present invention comprises a portion for supporting the user and a portion for supporting the back, a portion for supporting the load by the pillars and the base,

The backrest 102 is generally constructed to be erected at an angle to the ground or at a slightly tilted angle, and configured to resemble the shape of the human body to provide maximum comfort. It is made of cool mesh material with good air circulation. It also has a built-in cushion for comfortable rest.

The seat 104 is a portion that allows a user to sit, and mainly supports the user's hips and thighs. The seat 104 of the present invention allows the user to tilt in the forward and backward direction as the body moves, or to slide in the back and forth direction.

For this, the seat 104 is composed of a sliding portion 104a and a rotating portion 104b. A reciprocating portion is formed on the upper surface of the rotating portion 104b by a linear slide bearing, and the sliding portion 104a is moved forward and backward To be movable. The rotation unit 104b is coupled to the height adjustment shaft 108 as a rotation center shaft 104c. The rotation unit 104b rotates about the rotation center shaft 104c at the upper end of the height adjustment shaft 108, . The seat (104) forms an inclined surface in the forward or backward direction according to the rotation of the rotary part (104b).

The rotation angle of the seat 104 may vary depending on the size of the chair 100, the use of the chair 100, and the characteristics of the user, but may be approximately 5 to 12 degrees in the forward direction and 5 to 10 degrees in the rear direction .

A spring 104d is interposed between the sliding part 104a and the rotation part 104b so that the sliding part 104a moved forward or backward can generate an elastic force to return to the original position. The spring 104d is inserted between the sliding portion 104a and the rotating portion 104b and is compressed each time the sliding portion 104a moves forward or backward to generate an elastic force (see FIG. 7).

So that the rear end of the seat 104 is positioned below the lower end of the back 102. Then, when the seat 104 is rotated so as to be inclined forward, the rear end of the seat 104 is moved upward and comes into contact with the lower end of the backrest 102. As a result, the backrest 102 can prevent the user from falling off the seat 104 as the seat 104 is tilted too far forward.

Normally, when the seat 104 is tilted backward, since the back of the user touches the back 102, the angle of rotation can be limited without a separate stopper. However, in some cases, a separate stopper may be installed to prevent excessive backward rotation.

Armrests 106 are provided on the right and left sides of the seat 104.

The height adjustment shaft 108 serves as a column for supporting the lower side of the seat 104 and can be extended or reduced in height up and down to adjust the height of the chair 100. The height adjustment shaft 108 generally uses a cylinder using a gas compression force, and the height can be changed by adjusting the length of the cylinder. A height adjustment knob is provided for this purpose.

Further, when the cylinder has a circular cross-section, the seat 104 is free to rotate in the left-right direction. However, if the cylinder is polygonal, it can be fixed so as not to rotate.

A leg 110 is provided at a lower end of the height adjusting shaft 108 and a moving wheel 112 is attached at a lower end of the leg 110. The legs 110 may be made of a circular or rectangular plate different from those shown in the drawings.

On the back surface of the backrest 102, a gas spring 114 for controlling the tilt rotation speed and the restoring force of the seat 104 is provided. The gas spring 114 preferably utilizes the pressure of the gas (pressure regulating gas), and plays a role of reducing the speed of compression or stretching, like a general damper. The gas spring 114 on the back surface of the backrest 102 prevents the inclination rotational speed of the seat 104 from rapidly increasing.

An upper connection part 116 is formed on the back side of the back 102 and a lower side connection part 118 is formed on the back end part of the left side plate 104. [ Both ends of the gas spring 114 are rotatably connected to the upper connection part 116 and the lower connection part 118, respectively. As a result, due to the rotation of the seat 104, the gas spring 114 can expand and contract while slightly changing the angle, so that smooth motion can be performed. This helps the user to stretch the spine.

When the seat 104 is tilted forward, the gas spring 114 is shortened and compressed as the rear end of the seat 104 is raised upward (see Fig. 5). On the contrary, The gas spring 114 is stretched as the rear end portion of the gas spring 114 descends (see FIG. 6).

A link arm 120, to which two links are coupled, is connected to the upper connection part 116 and the lower connection part 118. And a rotation roller 122 is provided at the center where the two links are connected to rotate freely. The link arm 120 moves the position of the rotary roller 122 in the forward or backward direction or the vertical direction while rotating as the inclination angle of the seat 104 changes.

The rotating roller 122 is made of urethane or silicone material having a certain elasticity to a certain extent, which is approximately equal to or slightly smaller than the width of the backrest 102. The center rotation axis of the rotation roller 122 is arranged in the left-right direction (the direction parallel to the paper). The rotating roller 122 gives a proper stimulus to the user's lumbar and thoracic parts while rotating or moving back and forth.

Both end portions of the link arm 120 are rotatably fixed to the upper connecting portion 116 and the lower connecting portion 118 so that the rotating roller 122 moves back and forth in accordance with the inclination of the seat plate 104. [ When the seat plate 104 is tilted forward, the two links constituting the link arm 120 are folded to shorten the overall length of the link arm 120, (See the left part of FIG. 8). Therefore, it is possible to touch the back of the slightly moved forward user.

Conversely, when the seat 104 is tilted backward, the entire length of the link arm 120 becomes longer, and the two links are unfolded. This causes the rotating roller 122 to slightly move backward and rub the user's back which is closely attached to the back 102 (see the right part of Figure 8).

In this way, the center connecting portion of the link arm 120 moves forward or backward according to the inclined rotation angle of the seat 104, and the massage roller 120 can bring about a massage effect in a state in which the rotary roller 122 is in close contact with the user's back. In particular, since the C-curve of the vertebrae can be restored and the massage motion can be performed in the first tilting motion in which the seat 104 is tilted forward, the natural healing function of the spine can be improved. In some cases, an electric drive means (not shown) may be provided to adjust the rotation angle of the rotary portion 104b, or the massage may be performed while rotating the rotary roller 122 in a desired manner by the electric drive means.

9 is a side view showing a state in which the torsion spring is compressed according to the inclination of the seat.

The gas spring 114 is installed at the rear side of the seat 104 to slow the seat slope and increase the exercise effect. In some cases, a torsion spring 124 is installed in the seat 104, So that the same motion can be performed.

The torsion spring 124 is installed around the rotation center shaft 104c formed in the rotation portion 104b. When the rotation part 104b is tilted forward or backward, the torsion spring 124 is compressed along the rotation and generates a restoring force that makes it flat. Therefore, the same type of movement as that of the gas spring 114 is provided.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: Chair 102: Backrest
104: seat plate 104a: sliding portion
104b: rotation part 104c: rotation center axis
104d: spring 106: armrest
108: height adjustment shaft 110: leg
112: moving wheel 114: gas spring
116: upper connection part 118: lower connection part
120: link arm 122: rotating roller
124: Torsion spring

Claims (5)

A back 102 made in a raised state in contact with the back of the user;
A seat plate (104) slidably moving in a back and forth direction;
A height adjustment shaft 108 connected to the lower side of the seat 104;
A leg 110 installed at a lower end of the height adjusting shaft 108;
An upper connection portion 116 protruding from an upper side of the back surface of the backrest 102;
A lower connection part 118 protruding from a rear end of the seat 104;
And a gas spring (114) having both ends rotatably connected to the upper connection part (116) and the lower connection part (118), respectively,
The seat (104)
A sliding part 104a which slides forward and backward within a predetermined range by weight when the user moves while sitting on the floor; a sliding part 104a provided on a bottom surface of the sliding part 104a to rotate about a rotation center shaft 104c And a rotating portion 104b which is inclined forward and backward in a predetermined range in the forward and backward direction with respect to the center,
The rotation center shaft 104c is located at the center in the front-rear direction of the sliding portion 104a,
The gas spring 114 is shortened when the seat 104 is tilted forward and slows the rotation speed of the seat 104 when the seat 104 is tilted backward And an inclined chair provided with a rotating roller. The method according to claim 1,
And a spring (104d) provided between the sliding part (104a) and the rotating part (104b) to generate a restoring force to return the sliding part (104a) to the original position after sliding the sliding part An inclined chair. delete The method according to claim 1,
A link arm 120 rotatably connected to the upper connection part 116 and the lower connection part 118;
And a rotating roller (122) installed at a center of the link arm (120) and connected to two links, the rotating roller (122)
Characterized in that the rotating roller (122) rotates in contact with the back of the user. The method according to claim 1,
And a torsion spring 124 provided around the rotation center shaft 104c formed in the rotation part 104b and generating a restoring force for bringing the rotation part 104b in a flat state when the rotation part 104b is tilted forward or backward And an inclined motion chair provided with a rotating roller.

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