KR20080111947A - Chair with the function of algle adjustment for back support - Google Patents

Chair with the function of algle adjustment for back support Download PDF

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Publication number
KR20080111947A
KR20080111947A KR1020070060532A KR20070060532A KR20080111947A KR 20080111947 A KR20080111947 A KR 20080111947A KR 1020070060532 A KR1020070060532 A KR 1020070060532A KR 20070060532 A KR20070060532 A KR 20070060532A KR 20080111947 A KR20080111947 A KR 20080111947A
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KR
South Korea
Prior art keywords
backrest
chair
frame
elastic body
angle
Prior art date
Application number
KR1020070060532A
Other languages
Korean (ko)
Inventor
이종호
Original Assignee
이종호
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이종호 filed Critical 이종호
Priority to KR1020070060532A priority Critical patent/KR20080111947A/en
Publication of KR20080111947A publication Critical patent/KR20080111947A/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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • 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
    • A47C7/48—Support for the head or the back for the back of freely-rotatable type

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A chair is provided, which prevents the empty space from being formed between the seat back and backbone by positioning a pivoting point of the seat back in the height corresponding to the elbow site from the seat portion. A chair equipped with a seat back(100) comprises: a back support frame(200) formed in the location higher than the seat for the installation of the seat back; a connection unit which is inserted through the side of the back support frame and connects the rear lower part of the seat back and the rear of the back support frame; and an elastic body(400) which connects the rear lower part of the seat back and the rear of the back support frame.

Description

Chair with backrest with adjustable angle {Chair with the function of algle adjustment for back support}

1 is a side view showing a schematic side view of a chair constructed in accordance with one preferred embodiment of the present invention;

Figure 2 is a cross-sectional view showing a state in which the back and the angle adjustment lever coupled to the connecting shaft.

3 is a side view of the angle adjustment lever.

4 is a front view of the connecting shaft.

<Description of Major Symbols Used in Drawings>

100: backrest 200: backrest frame

210: opening groove 300: connection means

310: connecting shaft 315: guide groove

320: angle adjustment lever 325: fixed part

330: fixed pin 400: elastic body

410: guide rod 420: guide ring

430: control rod 440: variable rod

The present invention relates to a chair, and more particularly, to a chair, characterized in that the angle of the backrest can be adjusted and the backrest can be folded in a horizontal direction for convenient movement or storage.

The spine, which is the pillar of the body, is most important, but many people do not recognize it until a special symptom occurs. Representative disease related to the spine is the disk, and in addition to the problems with the spine is a variety of symptoms accompanying discomfort in normal life occurs.

In the past, the disease was caused by the heavy spine while carrying a heavy object, but in recent years, due to incorrect posture, spinal diseases are increasing. Therefore, many chairs have been released to induce convenience and proper posture, and have their own functions.

Usually, the chair has a common support element, the seat portion and the backrest in contact with the ground, the backrest is projected high to the upper side to support the user's back. With this structure, the space occupied by a single chair is quite large, and it is inconvenient during shipping or storage.

On the other hand, when the backrest is tilted back in a common chair, there is a problem in that the backbone is formed as an empty space between the bottom of the spine and the backrest.

In order to solve the conventional problems as described above and to provide a better function and convenience in the present invention, the backrest is inclined, but the pivot point of the backrest is positioned at a height corresponding to the elbow portion from the seat portion between the backrest and the lower spine. It is intended to provide a chair so that no empty space is formed.

And to incline the backrest to the rear to achieve a structure that does not require a large force, and if necessary to provide a chair having a function to fold the backrest forward in a horizontal direction.

The present invention for achieving the above object, the chair is provided with a backrest, the backrest frame is formed at a position higher than the seat surface for the installation of the backrest; Connecting means inserted through a side of the back frame to connect the backrest to be rotated relative to the backrest frame; It relates to a chair having an adjustable backrest, characterized in that it comprises a; connecting the lower back portion rear surface and the back frame frame rear, an elastic body that can be restrained from the back frame.

Preferably, in the chair having an adjustable angle backrest according to the present invention, the connecting means connects the backrest and the backrest frame and has a connecting shaft formed with two guide grooves forming a circle at the distal end projecting out of the backrest frame; It is coupled to the connecting shaft and the plurality of balls are supported by the spring to contact the guide grooves to move between the two guide grooves along the axial direction and the angle adjustment lever provided with a plurality of fixing on the surface facing the back frame and ; It is suitable to be configured to include a fixing pin which is formed to protrude in the back frame to be coupled to the fixing portion to change the angle of the back.

Preferably, in the chair having an adjustable angle backrest according to the present invention, the elastic body is connected to a guide ring whose one end is moved along a guide rod fixedly installed at the backrest, and the other end is formed at the rear side of the backrest frame. It is to be configured to be connected to the variable rod which is screwed with the control rod detachable to the groove to move the position.

Preferably, in the chair having an angle adjustable backrest according to the present invention, the backrest frame connected to the backrest is advanced horizontally by the weight of the user so that the backrest is in close contact with the back of the user.

And in the chair having an angle adjustable backrest according to the present invention, the backrest is configured such that the backrest is inclined forward by 90 degrees or more as the elastic body is restrained from the backrest frame so that the backrest contacts the seat. desirable.

Hereinafter, a more detailed description of a chair having a backrest capable of adjusting an angle according to the present invention (hereinafter referred to as a chair) will be described, and reference will be made to related drawings as a means for understanding.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show one embodiment embodied in accordance with the technical spirit of the present invention, and therefore, it should be pointed out that implementations with simple modifications to substantially the same extent are included in the scope of the present invention.

And the chair according to the present invention can be applied to both a chair that is fixed to the backrest is not moved in the front and rear direction or the chair is operated to be in close contact with the back portion when the user is seated on the seat.

1 is a side view showing a schematic side view of a chair constructed in accordance with a preferred embodiment of the present invention, Figure 2 is a cross-sectional view showing a state in which the backrest and the angle adjustment lever coupled to the connecting shaft, Figure 3 Is a side view of the angle adjustment lever, and FIG. 4 shows a front view of the connecting shaft.

As shown, the chair includes a backrest 100, a backrest frame 200, a connecting means 300, and an elastic body 400 as main components, and the seat part 500, the support part 600, and the like. do. The backrest 100 is installed to be constrained to the backrest frame 200 so that the backrest frame 200 is formed at a position higher than the seat surface. And it is preferable that the backrest frame 200 is made in one piece and its planar shape is substantially U-shaped. The backrest 100 is connected between the backrest frame 200 as described above, the connection part becomes a pivot point and the backrest is inclined.

In the case of a general chair, the pivoting point of the backrest which is rotated or inclined becomes the lower part of the backrest. In this case, there is a problem of causing a disease by causing a space between the backrest and the user's back part and the hip part to give a spine.

On the contrary, by making the pivot point of the backrest at a position corresponding to the distance from the shoulder to the elbow, which is higher than the lower part of the backrest, as in the present invention, the backrest of the portion below the pivot point is moved forward even when the backrest is inclined so that the user's back and hip In close contact with the above problem can be solved.

The connecting means 300 is used to connect the backrest 100 to the backrest frame 200 so as to be rotated. The connecting means includes a connecting shaft 310, an angle adjusting lever 320, and a fixing pin 330. It is composed. The connecting shaft 310 is inserted from the outside of the backrest frame 200 is inserted into the backrest 100 and the angle adjustment lever on the connecting shaft 310 protruding to any one side or both sides of the backrest frame 200. To engage 320. The angle adjusting lever 320 may be moved in the axial direction with respect to the connecting shaft 310 and a plurality of recessed or perforated fixing parts 325 are provided near the edge. In the present embodiment, two fixed circles 325 are formed in two forms where a plurality of circles overlap each other along the edge of the angle adjustment lever 320.

On the other hand, in response to the fixing part 325, the backrest frame 200 is provided with a fixing pin 330 of a protruding shape to allow the fixing pin 330 to be coupled to the fixing part 325. The angle adjusting lever 320 may be moved in the axial direction with respect to the connecting shaft 310. When the angle adjusting lever 320 is pulled outward, the fixing part 325 is separated from the fixing pin 330 and the backrest is separated. When the structure 100 can be rotated and the angle adjustment lever 320 is pushed toward the backrest frame 200 side, the fixing part 325 is coupled to the fixing pin 330 so that the backrest 100 is no longer rotated. I can't.

The backrest 100 and the angle adjustment lever 320 coupled to the connection shaft 310 are rotated in the same direction at the same time as the backrest is inclined. That is, the angle adjustment lever 320 can be moved only a predetermined distance in the axial direction with respect to the connecting shaft 310, the rotation is made with the connecting shaft when rotating. In order to realize the axial movement of the angle adjustment lever 320 with respect to the connecting shaft 310, as shown in Figure 4 to have two guide grooves 315 on the outer surface near the end of the connecting shaft 310, the angle corresponding thereto A plurality of balls 326 as shown in the adjustment lever 320 is supported by the spring 327 so that the ball 326 is located in the guide groove 315. Therefore, the angle adjustment lever 320 is moved in the axial direction with respect to the connecting shaft 310 by the user push or pull to move between the two guide grooves (315).

The angle that the fixing portion 325 is formed with respect to the connecting shaft 310 will be the maximum angle that the backrest 100 can be rotated while the chair is in use, and when the chair is not used, the fixing pin 330 The fixing part 325 may be detached so that the backrest 100 is completely folded.

In the chair of the present invention, one end of the elastic body 400 is connected to the rear of the lower end of the backrest 100, and the other end of the elastic body 400 is connected to the rear side of the backrest frame 200. A variety of well-known ones may be applied to the type of the elastic body 400, and in the present example, a coil spring is used. When the backrest 100 and the backrest frame 200 are connected to the elastic body 400, when the user rotates the backrest 100 while moving backward, the elastic body is elongated, and a restoring force is applied to the backrest to return to the original position.

In installing the elastic body 400, it is also possible to directly connect both ends of the elastic body to the backrest 100 and the backrest frame 200, respectively, but more preferably, the structure described below is preferable.

Coil springs are used as the elastic body 400, and the guide rods 410, the guide rings 420, the control rods 430, and the variable rods 440 are connected to the backrest 100 and the backrest frame 200. Install more elements. That is, the guide rod 410 is installed in the center of the rear surface of the lower end of the backrest 100, and the guide rod 410 is coupled to the guide ring 420 to be slid and the elastic ring 400 of the guide ring 420 is slid. It forms a structure where one end is connected.

A control rod 430 and a variable rod 440 are used as a means for connecting the other end of the elastic body 400 to the backrest frame 200. The control rod 430 is a guide rod at a rear side of the backrest frame 200. 410 is coupled to a position corresponding to the same vertical surface, the variable rod 440 is screwed to the control rod 430 and the other end of the elastic body 400 is connected to the variable rod 440. The control rod 430 is rotated in a state coupled to the opening groove 210 formed in the backrest frame 200 and the position of the variable rod 440 is changed according to the rotation of the control rod 430, so that the elastic body 400 Initial elastic force can be adjusted.

In particular, as a feature of the elastic body 400 according to the present invention, as the backrest 100 is inclined backward, the guide ring 420 connected to the elastic body 400 gradually moves upward along the guide rod 410. There is a technical feature in that. The position of one end of the elastic body 400 connected to the backrest 100 is fixed compared to the fixed position, so that when the user is inclined by the same angle, the force to be applied to the backrest 100 does not increase rapidly. There is an advantage that the angle of the backrest can be changed by force.

In installing the control rod 430 using the opening groove 210 formed in the backrest frame 200, the control rod 430 may be combined by simply opening a hole in the backrest frame 200 with the opening groove 210. In this embodiment, however, the control rod 430 is to be freely separated from the backrest frame 200 so that the backrest 100 itself can be rotated forward to be in a horizontal state. Since the backrest 100 is elongated to the upper side of the seat 500, there is a lot of inconvenience and waste of unnecessary space due to the height occupied by the backrest 100 when moving or storing or storing goods. However, when the backrest can be freely rotated as in the present invention, it is expected to reduce storage costs and logistics costs.

To this end, the opening groove 210 is opened toward the upper side of the back frame 200, and the specific shape of the opening groove can be variously changed. However, it is suitable to insert a suitable stopper (not shown) in the backrest frame 200 in order to prevent the control rod from being stepped off after inserting the control rod into the opening groove.

In the case of using the chair, the control rod 430 is inserted into the opening groove 210 so that the backrest of the backrest is limited within the range controlled by the user using the angle adjustment lever 320 or within the limited range according to the elastic modulus of the elastic body. The angle of rotation can be adjusted. However, during shipping or moving, if the control rod 430 is pushed upward from the opening groove 210 so as to reduce the volume, the backrest 100 is tilted forward with respect to the connecting shaft 310 to 90 degrees or more. The angle can be adjusted so that the front part of the backrest contacts the upper surface of the seat part 500.

In the case of Figure 1 showing a preferred embodiment of the present invention corresponds to the technique of the present invention applied to the chair is moved backrest and backrest frame, it is obvious that the backrest and backrest frame can be applied to the chair is not moved.

The technology related to the chair to which the backrest is moved may utilize those such as the technology of Korean Patent Registration No. 675715 filed and registered by the present applicant. The chair in which the backrest is moved refers to a chair in which the backrest is also moved by moving the backrest frame connected to the member which is horizontally moved below the seat portion as the user sits on the seat portion. Since the principle of movement of the backrest can be achieved by the disclosed technology, a detailed description thereof will be omitted.

As described above, the chair according to the present invention has excellent convenience in use because the angle of the backrest is adjusted, and since the pivot point of the backrest is formed high, the lower part of the backrest always supports the vertebral region leading to the hip region, and various diseases related to the musculoskeletal system. It has the effect of helping to prevent related diseases.

In addition, there is an advantage of not requiring a large force when adjusting the angle of the backrest, and if necessary, the backrest can be laid horizontally forward to minimize the space occupancy by significantly reducing the volume during storage or delivery, thereby reducing shipping and storage charges. It also provides the effect of savings.

Claims (5)

In a chair provided with a backrest, A backrest frame formed at a position higher than the seat surface for installation of the backrest; Connecting means inserted through a side of the back frame to connect the backrest to be rotated relative to the backrest frame; A chair having an adjustable backrest, comprising: an elastic body connecting the rear surface of the lower back portion to the rear of the back frame and an elastic body which can be restrained from the back frame. The method of claim 1, The connecting means, A connecting shaft connecting the backrest and the backrest frame and having two guide grooves forming a circle at a distal end projecting outward of the backrest frame; It is coupled to the connecting shaft and the plurality of balls are supported by the spring to contact the guide grooves to move between the two guide grooves along the axial direction and the angle adjustment lever provided with a plurality of fixing on the surface facing the back frame and ; And a fixing pin protruding from the back frame so as to be coupled to the fixing part. The chair having an angle adjustable backrest, comprising: a fixing pin configured to change an angle of the backrest. The method of claim 1, The elastic body, One end thereof is connected to the guide ring which is moved along the guide rod fixedly installed on the backrest, and the other end is connected to the variable rod which is screwed with the control rod detachably attached to the opening groove formed at the rear side of the backrest frame. Chair with adjustable backrest, characterized in that configured. The method according to any one of claims 1 to 3, The backrest frame connected to the backrest is advanced in the horizontal direction by the user's weight, the chair having an adjustable backrest, characterized in that the backrest is in close contact with the user's back. The method according to any one of claims 1 to 3, The backrest, Chair having an angle adjustable backrest, characterized in that the backrest is inclined forward 90 degrees or more as the elastic body is released from the backrest frame and the backrest is in contact with the seat portion.
KR1020070060532A 2007-06-20 2007-06-20 Chair with the function of algle adjustment for back support KR20080111947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070060532A KR20080111947A (en) 2007-06-20 2007-06-20 Chair with the function of algle adjustment for back support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070060532A KR20080111947A (en) 2007-06-20 2007-06-20 Chair with the function of algle adjustment for back support

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KR20080111947A true KR20080111947A (en) 2008-12-24

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KR1020070060532A KR20080111947A (en) 2007-06-20 2007-06-20 Chair with the function of algle adjustment for back support

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101245655B1 (en) * 2009-09-25 2013-03-20 파나소닉 에이지 프리 라이프 테크 주식회사 Chair for bath room
KR20190110850A (en) 2018-03-21 2019-10-01 주식회사 네오퍼스 Tilting chair with lumbar supporting function
WO2021174646A1 (en) * 2020-03-03 2021-09-10 厦门华尔达智能科技股份有限公司 Support cushion structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101245655B1 (en) * 2009-09-25 2013-03-20 파나소닉 에이지 프리 라이프 테크 주식회사 Chair for bath room
KR20190110850A (en) 2018-03-21 2019-10-01 주식회사 네오퍼스 Tilting chair with lumbar supporting function
WO2021174646A1 (en) * 2020-03-03 2021-09-10 厦门华尔达智能科技股份有限公司 Support cushion structure

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