KR101738881B1 - Back support structure for chair - Google Patents

Back support structure for chair Download PDF

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Publication number
KR101738881B1
KR101738881B1 KR1020150063674A KR20150063674A KR101738881B1 KR 101738881 B1 KR101738881 B1 KR 101738881B1 KR 1020150063674 A KR1020150063674 A KR 1020150063674A KR 20150063674 A KR20150063674 A KR 20150063674A KR 101738881 B1 KR101738881 B1 KR 101738881B1
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KR
South Korea
Prior art keywords
support
backrest
adjustment
chair
groove
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Application number
KR1020150063674A
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Korean (ko)
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KR20160131392A (en
Inventor
이지영
Original Assignee
주식회사 다원체어스
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Priority to KR1020150063674A priority Critical patent/KR101738881B1/en
Publication of KR20160131392A publication Critical patent/KR20160131392A/en
Application granted granted Critical
Publication of KR101738881B1 publication Critical patent/KR101738881B1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

The present invention includes a backrest to which a user's back is supported, a support portion formed apart from the backrest portion, and a connection portion connecting the backrest portion and the support portion, wherein the backrest portion includes a protrusion connected to the connection portion, The backrest supporting structure for a chair includes a groove connected to the connecting portion. The backrest is three-dimensionally moved according to a user's operation to provide convenience according to the length of the waist and the degree of inclination of the user, Which is capable of being adjusted in accordance with the backrest support structure for a chair.

Description

Background of the Invention [0002] Back support structure for chair [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backrest supporting structure for a chair, and more particularly, to a backrest supporting structure for a chair which can be adjusted in accordance with a user's body shape by three-dimensionally moving a backrest according to a user's operation.

The backrest supporting structure for a chair does not provide convenience according to the length of the waist of the user and the degree of inclination of the back because it uses only the technique of adjusting the height of the chair by tilting back and forth to give convenience to the user who uses the chair There has been a problem.

On the other hand, as a conventional technique relating to a backrest supporting structure for a chair, Korean Patent Registration No. 10-0334321 (Registered office chair, Apr. 15, 2002) is cited as an example.

In that patent document, "an office chair with a seat, a backrest and a pair of armrests supporting the user ' s body in an ergonomically desirable position for performing various tasks" is disclosed.

As another prior art related to a backrest supporting structure for a chair, Korean Patent Registration No. 10-0403104 (registered on October 13, 2003, method of assembling and assembling a modular chair structure) is exemplified.

In that patent document, "a method of incorporating a modular chair control structure and a selectable modular seat adjustment mechanism that imparts controllability and adaptability to a person sitting in a chair incorporating such a modular chair control structure" .

However, the conventional chair back supporting structure such as the above two patent documents fails to solve the above-mentioned problem.

Korean Registered Patent No. 10-0334321 (registered April 15, 2002), office chair Korean Registered Patent No. 10-0403104 (registered on October 13, 2003), modular chair structure fastening and assembling method

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for adjusting the shape of a user by three- So that it is possible to use the seat backrest by adjusting the seat backrest.

The back support structure for a chair for achieving the above object is provided with a back portion on which a back of a user is supported, a support portion formed apart from the back portion and formed separately from the seating portion on which the user sits, And the back portion includes a protrusion connected to the connection portion, and the support portion includes a groove connected to the connection portion.

Wherein the connection portion includes a first support body coupled to one side of the protruding portion of the backrest portion, a second support body coupled to the other side of the first support body, and a second support body coupled to the other side of the second support body, At least one of the engagement of the protrusions of the first support and the backrest, the engagement of the first support and the second support, and the engagement of the second support and the adjustment interlock, It is possible to unfold and unfold the anomalies between the joining configurations through the fitting joints.

And an adjusting unit that is formed on the support unit and is capable of adjusting the movement of the adjustment interlocking unit, wherein the adjustment unit includes an operation guide unit capable of vertically moving the adjustment interlocking unit in contact with the other side of the adjustment interlocking unit, And the operation guiding portion is capable of converting the rotational motion of the adjustment handle into a vertical motion.

Further, when the user sits on the chair, the distance between one side of the first supporting member and the other side of the second supporting member is distanced or narrowed so that the degree of inclination of the backrest according to the movement of the user can be changed, The operation guide portion, which rotates the shaft of the adjustment handle portion and is in contact with the axis of the adjustment handle portion, converts the rotary motion into the vertical movement to move the adjustment interlocking portion in the up and down direction in the groove of the support portion, It is possible that one side of the backrest portion is pulled in the direction of the support portion or is pushed in the direction of the backrest portion so that the lower end of the backrest portion performs a three-dimensional motion.

In addition, it is possible that at least one of the backrest portion or the support portion of the chair back support structure of the present invention can further include a height adjusting portion capable of adjusting the height of the chair, It is possible to deform the shape of vertical movement of the adjustment interlocking portion by providing the engagement protrusions at both ends of the support portion groove to prevent the separation from the support groove, and by providing at least one of the inclined surface, the curved surface and the projecting surface.

According to the chair back support structure according to the present invention,

First, it is possible to adjust the backrest to fit the body of the user by operating the adjustment handle portion while the user is sitting.

Second, since the jointed portion in the connection portion has elasticity, it provides a comfortable feeling to the user basically without any operation.

Third, since the backrest portion and the support portion are separated from each other, it is possible to prevent hardness transmitted due to the support portion.

Fourth, it is possible to adjust the radius of curvature of the portion of the user's back facing by changing the position of the backrest in three dimensions.

Fifth, since a plurality of connecting portions are provided instead of one unit, the curve of the back portion can be smoothly changed and the bottom portion of the back portion can be moved in three dimensions.

Sixth, since the support part is formed separately from the seating part on which the user sits, it is effective to give elasticity to the backrest part.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a connection portion of a chair back support structure according to a preferred embodiment of the present invention; FIG.
2 is a view showing an adjusting part of a chair back support structure according to a preferred embodiment of the present invention.
Figs. 3A and 3B show an embodiment of the position adjustment of the backrest of the chair back support structure according to the preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The backrest support structure for a chair of the present invention includes a backrest portion (10), a support portion (20), and a connection portion (30).

3A and 3B, the backrest 10 on which the user's back is supported includes a support portion 20 for supporting the backrest portion 10 and a lower end portion of the support portion 20 for supporting the backrest portion 10, So as to more effectively perform the function of supporting the back portion 10 of the support portion 20. [

In addition, since the support portion 20 is formed separately from the seating portion on which the user sits, the backrest portion 10 can be given elasticity.

The backrest includes a protrusion 11 connected to the connection portion 30 and the support portion 20 is connected to the connection portion 30 so as to form a connection portion 30 connecting between the backrest portion 10 and the support portion 20. [ And a groove 21.

At this time, the support groove 21 can serve as a vertical movement path of the connection portion 30. [

1 is a view showing a connection portion 30 of a chair back support structure according to a preferred embodiment of the present invention.

1, the connecting portion 30 of the chair back support structure of the present invention includes a first support 31, a second support 32, and a coordinated interlocking portion 33. As shown in Fig.

The first support body 31 is coupled to the backrest protrusion 11 at one side and the second support body 32 is coupled to the other side of the first support body 31 at one side.

The adjustment interlocking part 33 is coupled with the other side of the second support body 32 and the other side thereof is inserted into the support body groove 21 and is capable of vertical movement.

At least one of the coupling of the first supporting body 31 and the backrest projecting portion 11, the coupling of the first supporting body 31 and the second supporting body 32 and the coupling of the second supporting body 32 and the adjusting interlocking portion 33 It is possible to unfold and unfold the configuration that joins through the fitting engagement.

As shown in the figure, a coupling member 50 is formed at the connection of each structure to prevent the coupling from being released, and the coupling member at one side of the backrest projecting portion 11 and the first support body 31 is connected to an elastic member The coupling member 50 at one side of the second support body 32 and the other side of the first support body 31 include an elastic body 51b connected to one side of the first support body 31.

It is possible to elastically support the backrest portion 10 by including the elastic members 51a and 51b.

As shown in the enlarged view of FIG. 1, the support grooves 21 have grooves formed at two opposing sides of the three inner surfaces, and projections are formed on the surfaces of the adjustment interlocking portions 33, So that it is possible to prevent the adjustment interlocking portion 33 from being detached from the support groove 21.

2 is a view showing an adjustment unit 40 of a chair back support structure according to a preferred embodiment of the present invention.

2, the adjustment portion 40 formed on the support portion 40 of the backrest supporting structure for a chair according to the present invention and capable of adjusting the movement of the adjustment interlocking portion 33 includes the operation guide portion 41 and the adjustment handle portion 42 ).

The operation guide portion 41 can make vertical movement of the adjustment interlocking portion 33 by contacting the other side of the adjustment interlocking portion 42 and converting the rotational motion of the adjustment handle portion 42 into a vertical motion.

Figs. 3A and 3B show an embodiment of the position adjustment of the backrest of the chair back support structure according to the preferred embodiment of the present invention.

3A and 3B, the chair back support structure of the present invention operates in the following manner.

When the user sits on the chair, the distance between one side of the first supporting body 31 and the other side of the second supporting body 32 is distanced or narrowed so that the degree of inclination of the backrest 10 according to the user's movement can be changed.

When the adjustment handle portion 42 is rotated, the adjustment handle portion shaft 43 rotates to cause the operation guide portion 33, which is in contact with the adjustment handle portion shaft 43, to convert rotational motion into vertical motion, One side of the first support body 31 is pulled in the direction of the support portion 20 or is pushed in the direction of the backrest portion 10 so that the lower end of the backrest portion 10 is moved in the vertical direction, It is possible to exercise.

The connecting portion 30 is formed of a plurality of not integral parts, so that the curve of the backrest 10 can be smoothly changed and the bottom of the backrest 10 can be moved in three dimensions.

The adjustment linkage portion 33 is moved downward by the operation of the adjustment handle portion 42 so that the distance between the one side of the first support body 31 and the other side of the second support body 32 is increased, The lower end of the backrest 10 is pushed toward the user and the radius of curvature of the portion of the backrest 10 facing the user's back is shortened.

On the contrary, when the adjustment handle portion 42 rotates in a direction opposite to that in which the adjustment handle portion 42 was previously operated, the adjustment interlocking portion 33 moves upward and the distance between one side of the first support body 31 and the other side of the second support body 32 becomes close When the lower end of the backrest portion 10 is lowered, the lower end of the backrest portion 10 is moved away from the user, and the radius of curvature of the portion of the backrest portion 10 where the user's back is in contact becomes longer.

At this time, since the support groove 21 has at least one of an inclined surface, a curved surface, and a projected surface, it is easy to adjust the change of the curvature radius of the backrest 10 by deforming the vertical movement form of the adjustment interlocking portion 33 Loses.

It is also possible to form engagement protrusions at both ends of the support groove 21 in order to prevent the adjustment interlocking portion 33 from being separated.

Further, although not shown, it is possible that at least one of the backrest portion 10 or the support portion 20 of the chair back support structure of the present invention further includes a height adjustment portion capable of adjusting the height of the chair.

The height adjustment part is located in a part of the user's hand that is not in contact with the chair, thereby enhancing the convenience of the user. When a child whose weight is less than that of an adult reaches the lower part of the chair and adjusts the height adjustment part, It can be supplemented.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

10 ... backrest part 11 ... backrest projection
20 ... support portion 21 ... support portion groove
30 ... connection part 31 ... first support
32 ... second support body 33 ... adjustment interlocking portion
40 ... adjustment portion 41 ... operation guide portion
42 ... adjustment handle portion 43 ... adjustment handle portion shaft
50 ... fastening members 51a, 51b ... elastic member

Claims (6)

A back portion on which a user's back is supported;
A support portion formed separately from the seating portion on which the user sits, the back portion being spaced apart from the bottom portion; And
And a connecting portion connecting the backrest portion and the supporting portion,
Wherein the backrest includes a protrusion connected to the connection portion, and the support portion includes a groove connected to the connection portion,
The connecting portion
A first support coupled to one side of the protrusion of the backrest;
A second support body to which the other side and the other side of the first support body are coupled; And
And an adjustable interlocking portion coupled to one side of the second support body and the other side inserted into the groove of the support portion to perform a vertical movement,
At least one of the engagement of the protrusions of the first support and the backrest, the engagement of the first support and the second support, and the engagement of the second support and the adjustment interlock, It is possible to stretch,
The support groove
And engagement protrusions at both ends of the support portion groove to prevent the adjustment operation portion from being separated from the support portion groove,
Wherein at least one of an inclined surface, a curved surface, and a projecting surface is provided in the inside of the adjusting member,
Backrest support structure for chairs.
delete The method according to claim 1,
And an adjustment unit formed on the support unit and capable of adjusting the movement of the adjustment interlocking unit,
Wherein,
An operation inducing unit capable of contacting the other side of the adjusting operation unit and vertically moving the adjusting operation unit; And
And an adjustment handle portion capable of operating the operation guide portion,
Wherein the operation guiding portion is capable of converting the rotational motion of the adjustment handle into a vertical motion,
Backrest support structure for chairs.
The method of claim 3,
When the user sits on the chair, the distance between one side of the first supporting member and the other side of the second supporting member is distanced or narrowed so that the degree of inclination of the backrest according to the movement of the user can be changed,
The rotation of the adjustment handle portion causes the axis of the adjustment handle portion to rotate so that the operation guide portion that is in contact with the axis of the adjustment handle portion converts the rotary motion into a vertical motion to move the adjustment interlocking portion up and down in the groove of the support portion, Wherein one side of the first support body is pulled in the direction of the support part or is pushed in the direction of the backrest part so that the lower end of the backrest part can perform a three-
Backrest support structure for chairs.
The method according to claim 1,
At least one of the backrest portion and the support portion,
And a height adjuster capable of adjusting the height of the chair,
Backrest support structure for chairs.
delete
KR1020150063674A 2015-05-07 2015-05-07 Back support structure for chair KR101738881B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150063674A KR101738881B1 (en) 2015-05-07 2015-05-07 Back support structure for chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150063674A KR101738881B1 (en) 2015-05-07 2015-05-07 Back support structure for chair

Publications (2)

Publication Number Publication Date
KR20160131392A KR20160131392A (en) 2016-11-16
KR101738881B1 true KR101738881B1 (en) 2017-05-23

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101107615B1 (en) * 2011-07-06 2012-01-30 주식회사 다원산업 Chair mounted with lumbar support device
KR101468703B1 (en) * 2014-04-17 2014-12-05 주식회사 다원체어스 Back of chair

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2319884C (en) 1992-06-15 2001-12-04 Herman Miller, Inc. Pneumatic support column for a chair
US5782536A (en) 1995-02-17 1998-07-21 Steelcase Inc. Modular chair construction and method of assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101107615B1 (en) * 2011-07-06 2012-01-30 주식회사 다원산업 Chair mounted with lumbar support device
KR101468703B1 (en) * 2014-04-17 2014-12-05 주식회사 다원체어스 Back of chair

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