KR20090131537A - Chair with a tilting seat board - Google Patents

Abstract

PURPOSE: A chair having a circulation seating plate is provided to protect a backbone at the beginning of taking a seat, and easily stand up from the chair. CONSTITUTION: The chair having a circulation seating plate includes: a main body(11) combined with legs in the lower surface; a seat back(12) combined the behind of the main body; and a circulation seat plate(13) elastically combined to the upper surface of the main body to be rotated, and upwardly sloped toward the seat back in the state of not applying the external force. The main body includes a seat frame(11A) combined with the legs and the circulation seat plate; and a back support frame(11B) combined in the rear end of the seat frame.

Description

Chair with a tilting seat {Chair with a tilting seat board}

The present invention relates to a chair provided with a rotating seat, and more particularly, a seat that is inclined upward toward the backrest is elastically rotatable coupled to the main body of the chair, so that the upper surface of the seat is bent from the beginning of the seat where the waist and legs are bent. It relates to a chair that allows the seat to rotate downward until it is fully seated while supporting this person's buttocks.

Chairs that are inseparable from the daily life of a person have various shapes and structures according to the use, and among the various chairs, the chair that most affects the user's body is an office chair or an academic chair.

The reason why the office or academic chair affects the body a lot is that the user generally uses it repeatedly for a long time, and in particular, has a considerable effect on the spine of a person.

In particular, when a child or a student in the growth period, such as a wrong use of the chair or use a chair of an undesirable structure for a long time may cause scoliosis of the spine bent, even in adults may cause a disc or back pain.

Therefore, many ergonomic studies have been conducted on the effect of the chair on the spine, and based on such research, it is possible to correct the postures of students in the growing stage, as well as the postures of adults who work long hours while sitting. Various chairs have been developed to minimize as much fatigue as possible from sitting down.

For example, the "elastic coupling structure of the chair back and the seat plate" disclosed in Korean Patent Publication No. 526444 has the effect of evenly distributing the entire load including two backrests and a three-dimensional special operating rubber.

As described above, most of the prior art student or office chair can reduce the pressure on the spine and correct an incorrect posture by considering only the posture of the lower back part of the body part while seated. It is being made to be.

In addition, most chairs have a structure in which the backrest is elastically rotatable forward and rearward, and the seat plate is only a height adjustment naturally with the main body which can be adjusted in height while being fixed to the main body. When it is added, the upper end of the backrest is elastically rotated to the rear side with respect to the lower end of the backrest rotatably coupled to the chair body, wherein the seat plate is a fixed state may be difficult to the body.

In order to solve the above shortcomings, "Interlocking structure of a swivel chair back and a seat plate" is published in Korean Utility Model Publication No. 254801. When the chair is applied with the interlocking structure, the rear of the seat plate is Lowering together allows the seated person to maintain a comfortable position.

However, as described above, all the conventional chairs are designed so that the seated posture of the seated person can be correctly maintained based on the sitting state. There is a problem that the consideration of the movement of the leg is not made at all.

In other words, in the process of sitting on the chair, the center of the body changes as the knee and waist are bent, so that an excessive load may be given to the spine, and this state is not considered at all.

In particular, elderly people who lack muscle strength according to the change of the center of the body may sit down to fall down without sitting slowly during the seating process.

The present invention was devised to solve all the problems of the conventional chair manufactured by considering only the position of the seated occupant. The present invention provides a chair that can protect the spine from a seated position and help the chair more easily occur when it occurs. There is an object of the invention.

It is another object of the present invention to provide a chair that can prevent a person who lacks strength from losing strength and suddenly sitting down when seated.

The above object of the present invention is achieved by a pivoting seat in which the rear end portion is elastically downwardly rotatable about the engaging portion with the chair body in an inclined upward direction toward the backrest.

When the chair is equipped with the pivotal seat of the present invention, since the seatboard is elastically downwardly rotated with the hip in a state in which the seatboard is in close contact with the buttocks of the accumulator when seated on the chair, in the process of gradually bending the waist to sit down Reduces the load on the spine, especially in the case of people who lack muscle strength has the advantage of preventing the sudden impact that can be caused to the spine by falling down.

The present invention relates to a chair equipped with a rotating seat, in which the seat plate which is inclined upward toward the rear pivots elastically downward when seated, and elastically rotates upward when standing up.

The chair provided with the pivoting seat of the present invention is elastically rotated downward in a state in which the pivoting seat tilted upward toward the backrest side is in close contact with the buttocks of the seated occupant, and when standing up, it is elastically with the seated hips. There is a technical feature in the structure that is rotated upward and kept inclined toward the rear.

Chair provided with a rotating seat of the present invention as described above, the main body and legs are coupled to the bottom; A rotating seat rotatably coupled to an upper surface of the main body; A backrest coupled to the rear front of the body; It is composed of the back, looking at the rotation seat and the backrest as follows.

The pivotal seat is coupled to be inclined upward toward the backrest in a state in which the main body is elastically rotatable and the external load is not applied thereto.

In addition, the rear end of the upwardly inclined pivoting plate rotates downward by the external load acting downward, centering on the engaging portion with the main body, and upwards when removing the external load in the downward pivoted state. The movement of the rotating seat is made by an elastic force, and this elastic force is exerted by an elastic body capable of elastic linear reciprocating motion such as a coil spring, a leaf spring, a cylinder type air damper, and a gas cylinder with adjustable rod length.

The backrest may be coupled to the main body in a state in which it is separated from the pivot seat, but a lower end thereof may be pivotably coupled to a rear end of the pivot seat.

However, when the backrest is rotatably coupled to the pivoting seat, when the pivoting seat tilted upward toward the rear pivots downward, the backrest must pivot so that its upper end moves forward. As the rear end of the pivoting seat pivots downward, The combined shape of the backrest and the pivoting seat will change.

In other words, when the rear end of the rotating seat is pressed by a person seated, the backrest and the rotating seat have an approximately "B" shape, and when the rotating seat is inclined upward toward the rear by not being seated, the entire backrest is raised. As the back is further retracted from, the angle between the backrest and the swivel seat is less than 180 °.

Therefore, when seated on the chair of the present invention as described above, the upper surface of the rotating seat inclined upward to the rear side is in close contact with the seat of the seat, and as the seat of the seat is lowered, the inclination of the seat is also lowered while the backrest is lowered. Rotates toward the back of the chair, and when fully seated, the backrest and the pivoting seat have an approximately "b" shape, and are in close contact with each other's back and buttocks.

Details of the effects and the resulting effects, including the object and technical configuration of the present invention will be clearly understood by the following description with reference to the drawings showing a preferred embodiment of the present invention.

Figure 1 shows a side view of a chair equipped with an embodiment of the present invention the rotary seat.

As shown the chair is provided with a rotating seat of the present invention,

A main body 11 as a frame having legs joined to the bottom surface and having a shape of a substantially "b" on the side view;

A backrest 12 coupled to the rear front of the main body 11;

A rotating seat 13 coupled to the upper surface of the main body 11 to be elastically rotatable and inclined upward toward the backrest 12; And the like.

In this case, the main body 11 includes: a seat plate frame 11A to which the legs L and the pivot seat 13 are coupled; A backrest frame 11B fixed to the seat plate frame 11A while the backrest 12 is coupled; It is configured to include.

In the chair of the present invention configured as described above, when a downward load is applied to the upper surface of the rear part of the pivotal seat 13, the rear end of the pivotal seat 13 is elastically downward with the engaging portion with the main body 11 as the center of rotation. When the downward load is removed, the rear end pivots upward to return to the original state inclined upward toward the backrest 12.

Therefore, the chair of the present invention rotates downwardly with the seated buttocks of the seat in a state in which the rotatable seat 13 elastically supports the buttocks when the seated person sits on the chair, and upwards with the seated buttocks of the seat when standing up from the chair. Because of the rotation, the load on the spine can be reduced by bending or straightening the waist.

At this time, the backrest 12 coupled to the main body 11 may be rotatably coupled to the pivoting seat 13, as shown in FIGS. 2 and 3, the lower end of the backrest 12 of the pivoting seat 13. Rotatingly coupled to the rear end may allow the rear end of the pivoting seat 13 to resiliently swing downward when the person is seated on the chair, while the upper end of the backrest 12 pivots forward to closely contact the seated person's back. have.

When the backrest 12 is rotatably coupled as described above, the backrest 12 should be capable of reciprocating up and down with respect to the main body 11 together with the rotation.

In other words, when seated on the chair, the rear end of the pivoting plate 13 is rotated downward, and the upper and lower ends of the pivoting seat 13 are rotated in front of the main body 11 and the back 12, respectively. The entire backrest 12 pivoting rearward should slide downward with respect to the main body 11 by the distance the rear half end of the rotary seat 13 is moved downward by the rotation, and vice versa when standing on the chair.

And as described above, the backrest 12 and the pivoting seat 13 is rotatably coupled, so that the backrest 12 is coupled to the main body 11 so as to be slidable in the up and down direction can be a variety of forms, the One is as follows.

As shown in FIG. 3, the widthwise central portion is opened to the outside and the straight sliding rail member 12A having an inner space is coupled to the rear surface of the backrest 12, and is slidable along the inner space of the rail member 12A. By providing the rod-shaped sliding member 11C in the backrest frame 11B of the main body 11, the backrest 12 can be coupled to the main body 11 so as to be slidable.

Rotation of the backrest 12 and the rotational seat 13 is made elastically, the elastically rotatable structure is also possible in various forms, as shown in Figure 2, as a representative structure, the backrest 12 ) Is a structure in which an elastic body 14, 14 ', such as a coil spring, is coupled to a coupling portion of the pivot plate 13 and a coupling portion of the main body 11 and the pivoting plate 13.

However, when the backrest 12 and the rotational seat 13 are rotatably coupled, the elastic body can be used only for the coupling part of the backrest 12 and the rotational seat 13 or the coupling part of the main body 11 and the rotational seat 13. It may be.

That is, both the coupling portion of the backrest 12 and the rotational seat 13 and the coupling portion of the main body 11 and the rotational seat 13 can be elastically rotated by only one of the two elastic bodies 14 and 14 '. It can be done.

In addition, as the elastic body 14 ′ used in the coupling portion of the main body 11 and the pivoting plate 13 among the two elastic bodies 14 and 14 ′, as shown in FIGS. 4 and 5, a cylinder other than a coil spring is used. An air damper having a type structure may be used. In the case of using the air damper, the both ends of the air damper are coupled to the seat frame 11A and the rotating seat 13, and the space for installing the air damper and the smooth operation of the air damper are secured. For this purpose, it is preferable to make the seat plate frame 11A incline downward toward the rear side.

The cylindrical air damper used as the elastic body 14 'is composed of a cylinder 14'A, a cylinder rod 14'B, and the like, and the cylinder rod 14'B is always extended to a constant length. However, when an external force is applied, the cylinder rod 14'B retreats into the cylinder 14'A and the pressure inside the cylinder 14'B becomes high.

Therefore, when the external force is removed from the cylinder rod 14'B, the cylinder rod 14'B expands to its original state and the pressure inside the cylinder 14'B drops to its original state.

In addition, when gas is injected into the cylinder and the gas cylinder capable of adjusting the moving distance of the cylinder rod is used as the elastic body 14 ′, the inclination angle of the pivot seat 13, that is, the rotation angle may be adjusted as necessary.

1 is a view showing a chair provided with a rotating seat according to a first embodiment of the present invention,

  (A) is a side view showing the absence of seated persons,

  (B) is a side view showing a seated person.

2 is a view showing a chair equipped with a second embodiment of the present invention,

  (A) is a side view showing the absence of seated persons,

  (B) is a side view showing a seated person.

Figure 3 is a partial coupling of the body and the backrest constituting the chair of the present invention.

4 is a view showing a chair provided with a rotating seat of a third embodiment of the present invention;

  (A) is a side view showing the absence of seated persons,

  (B) is a side view showing the situation when there is a seated person.

5 is a view showing a chair equipped with a fourth embodiment of the present invention,

  (A) is a side view showing the absence of seated persons,

  (B) is a side view showing the situation when there is a seated person.

          ((Description of the reference sign for the main part of the drawing))

    11. Main Unit 11A. Seat frame 11B. Back frame

    11C. Sliding member 12. Backrest 12A. Rail member

    13. Revolving seat 14,14 '. Elastomer 14'A. cylinder

    14B. Cylinder rod

Claims (6)

A main body 11 having a leg L coupled to the bottom; A backrest 12 coupled to the rear of the main body 11; A rotating seat 13 coupled to the upper surface of the main body 11 to be elastically rotatable and inclined upward toward the backrest 12 in a state in which no external force is applied; Chair with a rotating seat, characterized in that configured to include. The method of claim 1, wherein the main body 11, A seat plate frame 11A to which the legs L and the pivot seat 13 are coupled; A backrest frame (11B) coupled to the rear end of the seat plate frame (11A) in a state in which the backrest (12) is coupled; Chair with a rotating seat, characterized in that configured to include. The rotating seat according to claim 1 or 2, wherein the lower end of the backrest 12 coupled to the main body 11 is elastically rotatably coupled to the rear end of the rotating seat 13. Chair. 4. The chair according to claim 3, wherein the backrest (12) is slidable up and down with respect to the main body (11). The chair according to claim 1 or 2, wherein an elastic body (14 ') is interposed between the pivotal coupling portion of the main body (11) and the pivot seat (13). The chair according to claim 5, wherein the elastic body (14 ') is one of a coil spring, an air damper, and a gas cylinder.

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