KR20160067494A - The back structure of chair - Google Patents

Abstract

The present invention relates to a seat back structure of a chair developed to enable a user to have a more stable and comfortable posture while sitting on the chair by supporting the user′s waist and pushing the user′s spine to hold the same from both sides. A waist support panel is mounted inside the seat back of the chair to be able to ascend and descend to support the user′s waist. The seat back of a chair comprises: a cushion member formed on a front portion thereof; and a back panel standing fixed on a rear portion of the seat to fix a rear surface of the cushion member. A fixing part is disposed on the central portion of the inside the back seat. The fixing part is fixed on the back panel after a waist support panel is inserted, wherein the waist support panel is equipped with a support unit formed while a vertical width of the waist support panel widens from the center in the left and right directions. The seat back structure of a chair comprises a pressurizing member attached to the rear portion of the support unit and a pair of ascending and descending members connected to the pressurizing member, extended in the lateral direction, having an adjustment handle protruding toward one side of the back seat and performing ascending and descending movements.

Description

The back structure of chair < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backrest structure of a chair, and more particularly, to a backrest structure of a chair, which is developed to support a waist to have a more stable and comfortable posture in a chair and to push a user's spine from both sides. Structure.

Although chairs have been widely used for students and office workers in the past, changes in lifestyle and the development of computers have led to an increase in the number of chairs that sit on chairs during the day.

In this case, when sitting in a chair for a long time, the unstable posture causes a pain in the spine and causes a deformation of the spine. Various types of chairs are being sold with an ergonomic design to prevent it.

Such a chair basically has a basic structure in which not only the height is adjusted and the backrest is elastically backwardly inclined but also the shape of the backrest from which the waist extends from the hips relatively protrudes forward, .

However, since the body shape of the user is different and the posture of the user sitting on the chair is different from user to user, it is preferable that the position of the protruding portion supporting the waist is changed depending on the person.

In addition, a technique that can induce a person sitting in a twisted position to sit in a correct posture is also necessary when sitting on a chair.

(Patent Document 1) Korean Patent Publication No. 10-1996-0031199 (September 17, 1996) (Patent Document 2) Korean Patent Publication No. 10-1998-0052394 (September 25, 1998) (Patent Document 3) Korean Patent Registration No. 10-0768480-0000 (October 12, 2007) (Patent Document 4) Korean Patent Registration No. 10-1028369-0000 (April 04, 2011) (Patent Document 5) Korean Patent Registration No. 10-1193404-0000 (October 16, 2012)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above problems, and an object of the present invention is to provide a chair which has a means for supporting a waist on a back of a chair, So as to support the back of the chair.

According to another aspect of the present invention, there is provided a backrest structure for a chair, the waist support panel being mounted inside the backrest of a chair so as to be able to move up and down to support a waist of a seated person;

The backrest of the chair comprises a front cushion member and a back panel fixedly installed behind the seat of the chair so that the back surface of the cushion member is fixed;

Wherein the backrest is fixed to the back panel after the waist support panel having the central fixing part and the support part formed in a widthwise-wider direction from the center to the left and right is inserted into the backrest;

And a pair of raising and lowering members connected to the pressing member and adapted to raise and lower while being provided with adjustment knobs connected to the pressing member and extending laterally and projecting to one side of the backrest, do.

In addition, the back panel includes a seating groove portion on which the waist supporting panel is seated, a first pressing member guide groove that is vertically elongated and has a rear portion of the pressing member inserted into both sides of the seating groove portion, And a guide groove cut out laterally in the groove so that the adjustment knob penetrates and protrudes outwardly;

A plurality of rearwardly protruding ribs are formed on the back surface of the fixing part in close contact with the back panel of the waist supporting panel to prevent the flow of the ribs from being inserted into the front surface of the back panel, And a second pressing member guide groove is formed on the rear surface of the second pressing member, the second pressing member having a front portion of the pressing member inserted therein and extending vertically;

The pressing member has a tension hole penetrating in the left and right direction and having an elastic restoring force by the pressure in the forward and backward directions.

In addition, the first pressing member guide groove may further include a guide elongated hole that is vertically elongated and a guide protrusion through groove that expands the incision width of the guide elongated hole;

A guide rib extending through the guide elongated hole and a guide protrusion extending in a cross section and passing through the guide protrusion through groove are further provided at an end of the guide rib.

In addition, the back panel further includes an inner panel having a rear surface fixed to a back panel fixed to the chair and a waist support panel interposed between the back surface panel and the cushion member.

As described above, according to the present invention, the lumbar support panel is inserted into the backrest of the chair, the lumbar support panel is not moved up and down but the separately provided pressure member is raised and lowered so that both ends of the lumbar support panel are protruded, By adjusting the position of the protruded part to support, it supports the waist to fit the user's body condition, and it covers the both sides and uses the chair in the right posture and has the effect of the chiropractor.

1 is a perspective view of a rear view according to an embodiment of the present invention.
2 is an exploded perspective view according to an embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a rear view according to an embodiment of the present invention.
Figures 4 through 5 are side views illustrating operation of the present invention in accordance with an embodiment of the present invention.
FIG. 6 is a top view of an embodiment of the present invention,

The present invention will now be described in detail in order that those skilled in the art can easily understand and reproduce the present invention with reference to the accompanying drawings.

2 is an exploded perspective view according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of the present invention as viewed from the rear, and FIG. 4 5 is a side view illustrating operation of the present invention in accordance with an embodiment of the present invention. FIG. 6 is a plan view of the operation of the present invention according to an embodiment of the present invention, wherein a waist- A backrest structure of a chair which is mounted so as to be lowered to support a waist of a seated person;

The backrest of the chair 1 is composed of a front cushion member 2 and a back panel 3 fixedly installed behind the seat 11 of the chair 1 so that the back surface of the cushion member 2 is fixed;

A back support panel 4 having a central fixing part 41 and a receiving part 42 formed to be wider in the left-right direction as viewed from the center is inserted into the backrest, Fixed to the back panel 3;

A pressing member 51 which is brought into close contact with the rear of the receiving portion 42 and an adjusting handle 52 which is connected to the pressing member 51 and protrudes laterally to one side of the backrest, And a pair of ascending / descending members (5) for restraining the backrest.

Various methods of supporting a part of a back of a chair so as to support a waist can be seen in various prior arts, but the structure is simple, , It was developed not simply to protrude but to allow the spinal column to be positioned so that both sides of the back are projected when the back is leaned.

The protruded lumbar support panel 4 of the present invention is in a state in which the fixing portion 41 is fixed by means such as a back panel 3 and a fixing bolt 412 while the both side support portions 42 are fixed to the back panel 3 And has a structure capable of flowing between the cushion members (2).

Herein, the upward / downward member 5 of the present invention allows the pressing member 51 to support the waist by pushing the catching portion 42 forward, so that the conventional means for supporting various waists allows the entire body to move up and down However, much power is required to move up and down, and it is possible to easily solve the problem that operation can not be performed especially when the occupant is leaning on the back.

In the present invention, as an example of a more specific configuration, the back panel 3 is provided with a seat groove 31 on which the waist support panel 3 is seated, and a seat back 31 on both sides of the seating recess 31, A first pressing member guide groove 32 which is partially inserted and extends vertically and a second pressing member guide groove 32 which is cut laterally in the first pressing member guide groove 32 so as to protrude to the outside after the adjusting knob 52 is inserted And a guide groove (33);

A plurality of rearwardly protruding ribs 411 are formed on the back surface of the fixing part 41 of the waist supporting panel 4 in close contact with the back panel 3 so that the ribs 411 are formed on the front surface of the back panel 3, Shaped elastic guide groove 43 is formed between the fixing portion 41 and the receiving portion 42 and the fixing portion 41 is upwardly opened. A second pressing member guide groove 44 in which a front portion of the pressing member 51 is inserted and extends vertically is formed;

The pressing member 51 has a tension hole 511 penetrating in the left-right direction and having an elastic restoring force by the pressure in the forward and backward directions.

The tension hole 511 of the pressing member 51 may be formed in a curved shape so as to guide the movement of the pressing member 51 in the case of the first and second pressing member guide grooves 32 and 44, It can be said that it is not only a method for giving an elastic restoring force to the protruded portion but also a structure that can move even when pressure is generated when the lifting member 5 is moved.

Further, the elastic guide groove 43 serves to bend the receiving portion 42 well.

The first pressing member guide groove 32 further includes a guide elongated hole 321 that is elongated in the vertical direction and a guide protrusion through groove 322 that expands the cutting width of the guide elongated hole 321;

A guide rib 512 extending through the guide elongated hole 321 is formed on the rear surface of the pressing member 51 and a guide member 512 extending in the end of the guide rib 512 and passing through the guide protrusion through- And the protrusion 513 is additionally provided.

The embodiment described above is provided with an additional guide means for allowing the pressing member 51 to move up and down more stably, and it is also possible to effectively prevent the pressing member 51 from being detached.

The back panel 3 includes an inner panel 34 for fixing the back surface of the back panel 3 fixed to the chair 1 and for inserting the waist support panel 4 between the back panel 3 and the cushion member 2 The present invention is not limited thereto.

The back panel 3 has a structure in which the exposed portion of the back panel 3 has a simple and smooth structure and the portion having a complicated configuration is formed in the inner panel 34 and is formed into an inner So that it can be concealed.

1: Chair
11: Seat
2: Cushion member
3: Back panel
31:
32: first pressing member guide groove
321: Guide hole 322: Guide protrusion penetration groove
33: guide groove
34: Inner panel
4: lumbar support panel
41:
411: rib 412: fixing bolt
42:
43: Elastic guide groove
44: second pressing member guide groove
5:
51: pressing member
511: Tension member 512: Guide rib
513: Guide projection
52: Adjustable handle

Claims (4)

A backrest structure of a chair for supporting a waist of a seated person by mounting a waist support panel in a backrest of a chair so as to be able to move up and down;
The backrest of the chair 1 is composed of a front cushion member 2 and a back panel 3 fixedly installed behind the seat 11 of the chair 1 so that the back surface of the cushion member 2 is fixed;
A back support panel 4 having a central fixing part 41 and a receiving part 42 formed to be wider in the left-right direction as viewed from the center is inserted into the backrest, Fixed to the back panel 3;
A pressing member 51 which is brought into close contact with the rear of the receiving portion 42 and an adjusting handle 52 which is connected to the pressing member 51 and protrudes laterally to one side of the backrest, And a pair of raising and lowering members (5) for raising and lowering the chair.
The back panel according to claim 1, wherein the back panel (3) has a seating groove portion (31) on which the waist supporting panel (3) is seated and a rear portion of the pressing member (51) is inserted on both sides of the seating groove portion A first pressing member guide groove 32 that extends vertically and a guide groove 33 that is cut laterally in the first pressing member guide groove 32 and protrudes outward after the adjustment knob 52 is inserted );
A plurality of rearwardly protruding ribs 411 are formed on the back surface of the fixing part 41 of the waist supporting panel 4 in close contact with the back panel 3 so that the ribs 411 are formed on the front surface of the back panel 3, Shaped elastic guide groove 43 is formed between the fixing portion 41 and the receiving portion 42 and the fixing portion 41 is upwardly opened. A second pressing member guide groove 44 in which a front portion of the pressing member 51 is inserted and extends vertically is formed;
Wherein the pressing member (51) has a tension hole (511) penetrating in the lateral direction so as to have elastic restoring force by the pressure in the forward and backward directions.
The method of claim 2, wherein the first pressing member guide groove (32) is provided with a guide elongated hole (321) that is elongated vertically and a guide protrusion through groove (322) that expands the incision width of the guide elongated hole ;
A guide rib 512 extending through the guide elongated hole 321 is formed on the rear surface of the pressing member 51 and a guide member 512 extending in the end of the guide rib 512 and passing through the guide protrusion through- And further comprises a projection (513).
4. The back panel according to any one of claims 1 to 3, wherein the back panel (3) has a back surface fixed to a back panel (3) fixed to a chair (1) 4. The chair backrest structure according to claim 1, further comprising an inner panel (34) to be inserted into the inner panel (34).

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