EP3476254A1 - Siège, en particulier chaise de bureau - Google Patents

Siège, en particulier chaise de bureau Download PDF

Info

Publication number: EP3476254A1
Authority: EP; European Patent Office
Prior art keywords: seat; axis; seat part; backrest; seating furniture
Prior art date: 2017-10-25
Legal status (The legal status 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 status listed.): Granted

Application number

EP17198337.2A

Other languages

German (de)

English (en)

Other versions

EP3476254B1 (fr

Inventor

Franz Ehrenleitner

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

EB-invent GmbH

EB INVENT GmbH

Original Assignee

EB-invent GmbH

EB INVENT GmbH

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.)

2017-10-25

Filing date

2017-10-25

Publication date

2019-05-01

2017-10-25 Application filed by EB-invent GmbH, EB INVENT GmbH filed Critical EB-invent GmbH

2017-10-25 Priority to EP17198337.2A priority Critical patent/EP3476254B1/fr

2017-10-25 Priority to PL17198337T priority patent/PL3476254T3/pl

2018-10-25 Priority to US16/171,095 priority patent/US10973326B2/en

2019-05-01 Publication of EP3476254A1 publication Critical patent/EP3476254A1/fr

2021-06-09 Application granted granted Critical

2021-06-09 Publication of EP3476254B1 publication Critical patent/EP3476254B1/fr

Status Active legal-status Critical Current

2037-10-25 Anticipated expiration legal-status Critical

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Classifications

- 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
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/18—Chairs or stools with rotatable seat
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
- 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
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
- 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
- A47C7/02—Seat parts
- A47C7/024—Seat parts with double seats
- 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
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

the invention relates to a chair, in particular an office chair, according to the preamble of claim 1 and essentially the DE 103 06 851 ,
the invention relates to seating furniture of all kinds, with the proviso that they have at least one seat and a backrest, which is called with respect to a base, usually support member, pivotable about a horizontal axis.
This base may be in an office chair, the top of a height-adjustable column on a chassis, it may be an optionally height-adjustable footboard which is fixedly mounted on the ground or rests freely displaceable, it can be a height-adjustable and / or longitudinally displaceable support member in a vehicle his and so on.
the explanation below based on an office chair is not intended to be limiting.
the Indian DE 103 06 851 disclosed office chair is to allow a particularly wide reclining and is in this context on the real and on the user-perceived stability of the chair by a vertical axis of the foot part intersecting, fixed, horizontal first pivot axis is provided for the backrest. To get back to the starting position, a gas spring or the like is provided.
office chairs are subject to many, often contradictory requirements. So it is above all desirable that the office chairs are ergonomically designed and therefore also medically correct, that is to say a corresponding back support and possibilities of movement for the user, who often spend hours sitting on these chairs, allows, indeed stimulates such movements.
the office chairs are no longer assigned to permanent users, but that the workers in each case take an office chair out of a kind of pool for their working day, and it is desired that as little time as possible should be spent adjusting the office chairs Chair is necessary to the user.
a chair / office chair having the features specified in the characterizing part of claim 1.
it is the seat part and the backrest articulated to the support member via a first horizontal, transverse pivot axis, wherein in the upright position of the chair, the starting position, this axis in front of the backrest and above the seat, preferably at least approximately Area of the overall center of gravity of the moving parts of the user and the moving parts of the chair is in the starting position, and wherein between the backrest and the seat part is provided parallel to this first pivot axis second pivot axis, which is in the starting position from the first pivot axis forth Seen, preferably in a range within a maximum of 5 ° towards the backrest and a maximum of 15 ° in the Direction away from the backrest with respect to the vertical and below the seat, preferably well below the seat, is arranged on the seat part; and that further the seat part is supported in its front third by means of a kinematics by an arm connected to the foot part
the rear part is permanently stationary with respect to the backrest, the front part performs a corresponding translational and rotating movement.
the separation area which may also be spaced from the pivot axis, is preferably arranged so that a user rests with his seat leg on the rear part and with the actual thigh area on the front part.
the front part is pivoted upwards with respect to the rear part when erecting in the starting position via a kinematics, which is connected to the foot part or the support frame, thus raised.
the Fig. 1 shows the office chair 1 of the prior art purely schematically in an already partially reclined position.
the backrest 15 is pivotably mounted on a substantially U-shaped support frame 5 via a pivoting lever 16, which may also be designed as an armrest, or carries such, on a first axis of rotation 12.
the backrest In the lower region of the backrest 15 and slightly in front of it, the backrest is pivotally connected to the seat part 14 via a second axis of rotation 20.
the seat part 14 is further guided via a sliding guide 18 and a corresponding roller at the end 10 of a support arm 9 which is connected to the support frame 5.
a mandatory return device, the Aufricht Anlagen 13, preferably a spring or the like, is attached at one end to the backrest 15, with the other end to the support arm 9 and is compressed when leaning back, thus supporting the erection.
This device is liable, as mentioned above, the disadvantage that occurs when reclining the shirt-undressing effect, and that by the decrease in the center of gravity of the moving parts, including the corresponding body parts of the user and the moving parts of the chair to understand the Aufricht Anlagen 13 must be provided.
the first improvement according to the invention would be the clear forward laying of the second axis of rotation 20, whereby upon reclining in the rearmost area of the seat part 14, that is the part adjacent to the backrest 15, lifting or at least a significant reduction the lowering takes place, which on the one hand, the return device 13, the spring superfluous on the other hand reduces the shirt-pull-out effect and also improves the back support by the backrest.
an office chair 1 in a split seat embodiment, has a seat portion 14a fixed relative to the seat back 15 and a movable seat portion 14b which is pivotable about a second axis 20 'with respect to the fixed seat portion, the following features:
the fixed seat part 14a serves to support the seat leg of the user, so that it does not come to a relative movement in the back area and thus no shirt-undressing effect when leaning back; the axis 20 thereby disappears, the axis 20 'between the two seat parts has a completely different task and effect: when leaning back, the movable, front seat part 14b is pivoted downward so that there is no squeezing of the blood circulation in the thigh in the knee area.
a good usable kinematics is in the Figs. 2, 3 , but especially in the enlarged representations of Figs. 5 and 6 a support member 7, which is guided in the region of its free end, which lies in this embodiment, far below the seat, with a roller 18 or the like in a longitudinal guide 8 of a pivoting rod 17 is guided.
the pivoting rod 17 is in turn pivotable about an axis parallel to the axis 12 on the supporting column 3. In the fully erected resting position of the pivot rod 17 takes the gravity according to the full lines in Fig.
the support member 7 acts with a torque about the axis 20 'counterclockwise about the roller 18 or the like and the longitudinal guide (slot) 8 on the pivot rod and is held by its reaction force in the position shown.
Figs. 7 and 8 illustrate the variant of the invention with undivided seat surface 14: the second axis 20 is in the starting position, Fig. 7 , solid lines, just before the vertical through the first axis 12, the undivided seat is provided in its front region with a roller 7 ', which rests on a support 8', which is fixedly connected to the support frame 5.
a roller 7 ' which rests on a support 8', which is fixedly connected to the support frame 5.
a bolt 6 reaches the end of a gate 11 and in the sequence on further leaning back the seat surface 14 entrains, as the situation shown in broken lines Fig. 8 shows.
the support 8 ' must be neither rectilinear nor rotatably connected to the support member 5; she can also, like the version after FIGS. 2 and 3 have a backdrop instead of a support.
an armrest 19 as part of the support frame 5 is a hinged, swiveling on Support frame 5 hinged and fitting to the backrest 15 resting or guided armrest provided without problems.
transition between the two seat parts by an elastic component, similar but of course, as in transitions of vehicles, which also takes over the limitation of the pivoting movement of the components 6, 11 and optionally in one piece with the two seat parts is made.
the axes or joints described in the description and shown in the drawing can also be formed as so-called virtual axes, as in particular in the WO2012 / 123102 , the WO2013 / 029069 , the DE 10 2012 002 402 or the WO2016 / 042127 , the DE 10 2014 013 560 or even the EP 2 686 145 the applicant is described.
the office chairs but not directly related to the invention components and functions, such as the chassis, the height adjustment, the formation of the bearings for the individual axes, this term is used for both the respective bearings and the associated axis of rotation, the structure of the seat parts and the Backrest, possibly provided armrests and much more, because they are well known to those skilled in the field of chairs - office chairs, and not to inflate them, not described in detail in the description.
a pull-out legrest are supported by the covered end position or close to the legs in the lower leg area and so a recovery position is created.
This legrest can be extended or retracted manually or by spring force, and / or in different positions / infinitely fixable. It is also possible to make the end region of the recline adjustable or to be able to fix various intermediate stages.
the Fig. 4 shows in two representations, left in the upright starting position, right partially reclined, the forces occurring in the use of an inventively designed office chair with shared seat part and thus, taking into account the change in potential energy by the vertical displacement of the center of gravity of the moving parts of the User and the moving parts of the chair.
the terms "front”, “rear”, “top”, “bottom” and so on are used in the common form and with reference to the article in its usual position of use. That is, in a chair / office chair, the seat surface is the upper surface of the seat part, the backrest on the chair is “back”, the leg stand is “down”, etc., etc.
the invention relates to a chair, in particular office chair 1, with a base frame 2 with a support frame 5, on which a first axis of rotation 12 for a backrest 15 is arranged, which is pivotable between an upright starting position and a reclined rest position.
the backrest 15 is hingedly connected in its lower region with a seat part 14, with a one-piece seat part 14, the articulated connection is provided about a second axis 20.
the second axis 20 lies below the first axis 12.
the rear seat part 14a is non-rotatably connected to the backrest 15.
the front seat part 14b and the one-piece seat part 14 is by means of a kinematics 7,8,17; 7 ', 8' is supported relative to the support frame 5.
the front seat part 14b and the one-piece seat part 14 is taken lowered when pivoting back the backrest by means of a kinematics 6,11 relative to the rear seat portion 14a and the backrest.

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Health & Medical Sciences (AREA)
Dentistry (AREA)
General Health & Medical Sciences (AREA)
Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Chairs Characterized By Structure (AREA)

EP17198337.2A 2017-10-25 2017-10-25 Siège, en particulier chaise de bureau Active EP3476254B1 (fr)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
EP17198337.2A EP3476254B1 (fr)	2017-10-25	2017-10-25	Siège, en particulier chaise de bureau
PL17198337T PL3476254T3 (pl)	2017-10-25	2017-10-25	Meble do siedzenia, w szczególności krzesło biurowe
US16/171,095 US10973326B2 (en)	2017-10-25	2018-10-25	Seating furniture

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP17198337.2A EP3476254B1 (fr)	2017-10-25	2017-10-25	Siège, en particulier chaise de bureau

Publications (2)

Publication Number	Publication Date
EP3476254A1 true EP3476254A1 (fr)	2019-05-01
EP3476254B1 EP3476254B1 (fr)	2021-06-09

Family

ID=60182486

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP17198337.2A Active EP3476254B1 (fr)	2017-10-25	2017-10-25	Siège, en particulier chaise de bureau

Country Status (3)

Country	Link
US (1)	US10973326B2 (fr)
EP (1)	EP3476254B1 (fr)
PL (1)	PL3476254T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2022174945A1 (fr)	2021-02-19	2022-08-25	Eb-Invent Gmbh	Siège

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR3082108B1 (fr) *	2018-06-06	2020-06-05	Herve Thomas	Dispositif d'assise physiologique
US11844440B2 (en) *	2020-02-21	2023-12-19	Aeteron Gmbh	Chair
CN113475884B (zh) *	2021-08-12	2022-08-12	浙江安吉荣艺家具有限公司	一种舒适可调人体工学办公椅

Citations (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2527061A1 (fr) *	1982-05-19	1983-11-25	Ami	Siege articule
EP0296578A1 (fr) *	1987-06-24	1988-12-28	Horst Sondergeld	Siège pour chaise de bureau ou analogue avec siège et dossier réglables, notamment par déplacement du poids du corps
US5009466A (en) *	1988-04-25	1991-04-23	Perry Charles O	Reclining chair
EP0559185A1 (fr) *	1992-03-03	1993-09-08	Sdm Hansen Ag	Dispositif de réglage synchronisé pour chaises de bureau
DE10007103A1 (de) *	2000-02-16	2001-09-13	Wolfgang Deisig	Verstellbarer Arbeitsstuhl, insbesondere Bürostuhl
DE10306851A1 (de)	2003-02-18	2004-08-26	Dózsa-Farkas, Andras	Stuhl, insbesondere Büro- oder Arbeitsstuhl
WO2012123102A1 (fr)	2011-03-17	2012-09-20	Eb-Invent Gmbh	Manipulateur
DE102012002402A1 (de)	2011-08-30	2013-02-28	Eb-Invent Gmbh	Manipulator
DE102014013560A1 (de)	2014-09-18	2016-03-24	Eb-Invent Gmbh	Möbel mit Schwenkvorrichtung für einen Schwenkteil
WO2016042127A1 (fr)	2014-09-18	2016-03-24	Eb-Invent Gmbh	Meuble pourvu d'un dispositif de pivotement destiné à un élément pivotant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ITMI20022194A1 (it) *	2002-10-16	2004-04-17	Icf Spa	Sedia avente sedile e schienale mobili.

2017
- 2017-10-25 EP EP17198337.2A patent/EP3476254B1/fr active Active
- 2017-10-25 PL PL17198337T patent/PL3476254T3/pl unknown
2018
- 2018-10-25 US US16/171,095 patent/US10973326B2/en active Active

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2527061A1 (fr) *	1982-05-19	1983-11-25	Ami	Siege articule
EP0296578A1 (fr) *	1987-06-24	1988-12-28	Horst Sondergeld	Siège pour chaise de bureau ou analogue avec siège et dossier réglables, notamment par déplacement du poids du corps
US5009466A (en) *	1988-04-25	1991-04-23	Perry Charles O	Reclining chair
EP0559185A1 (fr) *	1992-03-03	1993-09-08	Sdm Hansen Ag	Dispositif de réglage synchronisé pour chaises de bureau
DE10007103A1 (de) *	2000-02-16	2001-09-13	Wolfgang Deisig	Verstellbarer Arbeitsstuhl, insbesondere Bürostuhl
DE10306851A1 (de)	2003-02-18	2004-08-26	Dózsa-Farkas, Andras	Stuhl, insbesondere Büro- oder Arbeitsstuhl
WO2012123102A1 (fr)	2011-03-17	2012-09-20	Eb-Invent Gmbh	Manipulateur
EP2686145A1 (fr)	2011-03-17	2014-01-22	EB-invent GmbH	Manipulateur
DE102012002402A1 (de)	2011-08-30	2013-02-28	Eb-Invent Gmbh	Manipulator
WO2013029069A1 (fr)	2011-08-30	2013-03-07	Eb-Invent Gmbh	Manipulateur
DE102014013560A1 (de)	2014-09-18	2016-03-24	Eb-Invent Gmbh	Möbel mit Schwenkvorrichtung für einen Schwenkteil
WO2016042127A1 (fr)	2014-09-18	2016-03-24	Eb-Invent Gmbh	Meuble pourvu d'un dispositif de pivotement destiné à un élément pivotant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2022174945A1 (fr)	2021-02-19	2022-08-25	Eb-Invent Gmbh	Siège
DE102021104004A1 (de)	2021-02-19	2022-08-25	Eb-Invent Gmbh	Sitzmöbel
US12588763B2 (en)	2021-02-19	2026-03-31	Eb-Invent Gmbh	Seating furniture
DE102021104004B4 (de)	2021-02-19	2026-05-07	Eb-Invent Gmbh	Sitzmöbel

Also Published As

Publication number	Publication date
US10973326B2 (en)	2021-04-13
EP3476254B1 (fr)	2021-06-09
US20190200763A1 (en)	2019-07-04
PL3476254T3 (pl)	2022-02-28

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