EP1342432B1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
EP1342432B1
EP1342432B1 EP03004014A EP03004014A EP1342432B1 EP 1342432 B1 EP1342432 B1 EP 1342432B1 EP 03004014 A EP03004014 A EP 03004014A EP 03004014 A EP03004014 A EP 03004014A EP 1342432 B1 EP1342432 B1 EP 1342432B1
Authority
EP
European Patent Office
Prior art keywords
seat plate
spring element
chair
guide surface
flexural spring
Prior art date
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.)
Expired - Lifetime
Application number
EP03004014A
Other languages
German (de)
English (en)
Other versions
EP1342432A3 (fr
EP1342432A2 (fr
Inventor
Eckhard Dipl.-Ing. Hansen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1342432A2 publication Critical patent/EP1342432A2/fr
Publication of EP1342432A3 publication Critical patent/EP1342432A3/fr
Application granted granted Critical
Publication of EP1342432B1 publication Critical patent/EP1342432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • 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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity

Definitions

  • the invention relates to a chair with a support frame, a seat plate and a backrest, which is provided with a below the seat plate extending arm, which is hinged ver-pivotally mounted on the support frame, wherein the arm the rear part of the seat plate via a pivotal connection with this carries and the front part of the seat plate is connected via a bearing means to the support frame and the bearing means comprises at least one bending spring member which is held on one side of the support frame, and rests on the upper side in the region of its resiliently deflectable, free end mounted on the seat plate bearing part.
  • a chair of this type is known for example from DE 196 07 136 A1.
  • the chair described therein has a.
  • the seat plate is pivotally connected near its front edge via a pivot bearing with a support frame fixed to a pedestal.
  • the protruding under the seat plate lower arm of the backrest is pivotally hinged to the support frame and carries the back part of the seat plate.
  • the pivot bearing consists of the pivot shaft and a slot gate, which is formed rising towards the backrest.
  • the pivot shaft is fixed to the underside of the seat, the slot gate, however, fixed to the support frame.
  • the rear part of the seat plate is articulated between the articulation point of the arm on the support frame and the upright portion of the backrest on the arm.
  • a chair of the type mentioned is known from DE 12 97 306 B.
  • the rear part of the seat plate is supported by the bending spring member, which is connected in the region of its front of the chair facing the end of the support frame. In the central region of its longitudinal extent it is supported on a support element of the support frame.
  • the bias of the bending spring member In order to oppose a backward pivoting of the backrest for users with different weights in each case a sufficient force, the bias of the bending spring member must be greatly changed depending on the weight of the user.
  • the range within which the adjustment of the bias of the bending spring member can be changed is limited.
  • a relatively expensive gas spring is provided in a conventional manner between the swing frame for the backrest and the support frame of the chair.
  • the front side part of the seat plate is supported by a support connected to the support frame, and the rear part of the seat plate is hinged to the swing frame.
  • Biegefederglieder are provided to support the gas spring between the support carrying the front part of the seat plate and the pivot frame. Also in this chair, users of different weights require a large change in the applied spring forces to adapt the chair to the user.
  • the object of the invention is to provide an ergonomically advantageous, yet simple design and very inexpensive to produce synchronous mechanism, in which a weight compensation for users with different weight is achieved.
  • the bending spring member When pivoting the backrest to the rear, the bending spring member is deflected against the spring force, wherein the guide surface forms an abutment. At this guide surface can rest on the top of the bending spring member or another attached to the seat plate bearing part. Since in the undeflected state, the bending spring member is biased against the resting on its top bearing part, when loading the seat plate by a user - except at load peaks when Niederalt or if the user sits, for example, completely in the front edge on the seat plate - this bearing part or the other mounted on the seat plate bearing part are held in abutment with the guide surface, whereby a controlled synchronization sequence when pivoting the backrest is achieved to the rear.
  • a leaf spring package advantageously a leaf spring package can be used, which has advantageous elastic properties and is very inexpensive.
  • the chair according to the invention shown in Figs. 1 and 2 has a support frame 1. This can be mounted in a conventional manner about a vertical axis 2 pivotally mounted at the upper end of a central vertical column 3, which is supported by a cross-4.
  • a backrest 5 of the chair is connected to a below a seat plate 6 extending arm 7 which is articulated about an axis 8 pivotally mounted on the support frame 1.
  • the arm 7 carries the rear part of the seat plate 6 (including padding) via a pivotable about the axis 9 connection with this, wherein the pivotable connection of the seat plate 6 with the arm 7 is provided a downwardly projecting tab 10.
  • the front part of the seat plate 6 is connected to the support frame 1 via a bearing device 11.
  • the bearing device 11 has a bending spring member 12 in the form of a leaf spring package, which is held on the side of the backrest 5 facing the end on one side of the support frame 1.
  • the other, in this embodiment free, end 13 of the spiral spring member 12 is resiliently deflectable and adjoining this end 13 area lies on the down to the front of the chair downwardly sloping top 14 of the spiral spring member on the seat plate 6, namely on a downwardly projecting tab 15, mounted bearing member 16, so that the front-side part of the seat plate 6 is supported by the bending spring member 12.
  • the bearing part 16 is also located on a above the bearing part 16 arranged guide surface 17, which forms an abutment upwards.
  • the top 14 of the spiral spring member 12 and the guide surface 17 are here - viewed in side view - at an angle to each other and run toward each other towards the back of the chair.
  • the bearing part 16 is pulled by the connection of the seat plate 6 with the arm 7 along the guide surface 17 to the rear, wherein the bending spring member 12 is deflected downwards.
  • the angle between the guide surface 17 and the top 14 of the bending spring member 12 in this case affects the strength of the deflection of the bending spring member 12 and thus the strength of the deflection of the opposite spring force.
  • a stop is provided, which is not shown in the drawing for clarity.
  • this stop could be formed by a leg which delimits the movement of the bearing part 16 backwards along the guide surface 17 and projects downwards from the guide surface 17.
  • a clamping bolt 18 is provided, which passes through the bending spring member 12 through a through hole 19.
  • the clamping bolt 18 has an external thread and is screwed into an internal thread of a rigidly connected to the support frame 1 part 20.
  • the clamping bolt 18 has a radially projecting collar 21 which rests on the bending spring member 12 in the region around the passage opening 19.
  • the bending spring member 12 is in the region of the through hole 19 from the support frame 1 and from the internal thread provided portion 20 of the support frame 1 spaced and is biased by the collar 21 against the bearing member 16.
  • this bias is adjustable by more or less wide screwing the clamping bolt 18.
  • the bias causes the bearing member 16 does not lift from the guide surface 17 even with a weight load of the seat plate 6 by a user. By adjusting the bias, the pivoting back of the backrest 5 opposite spring force can be changed.
  • two separate bearing parts 16 can be provided for this purpose, which can be arranged one behind the other, for example in the image plane of FIGS.
  • the voltage applied to the guide surface 17, also mounted on the seat plate bearing member could be rigid or against the force of a spring slidably mounted on the seat plate or a part connected to this.
  • this may be formed as a role, in particular when for engagement with the upper side 14 of the bending spring member 12 and for engagement with the guide surface 17 separated, rotatable on the seat plate. 6 or an associated part arranged rollers are provided, a slight wear of these surfaces 14 and 17 and the bearing parts is achieved.
  • bending spring members 12 may be provided in the form of leaf spring packages on the tops 14 each designed as a rotatable roller bearing member 16 rests and between which the section 23 with the provided thereon guide surface 17 extends, which also bears a roll. These rollers can all be rotatably mounted about the same axis, which is held on both sides by tabs 15.
  • a portion of the lying below the uppermost leaf spring leaf springs of the leaf spring packet are formed shorter than the uppermost leaf spring and terminate before the free end of the uppermost leaf spring.
  • the guide surface 17 is approximately horizontal in the embodiment shown, an inclination of the guide surface relative to the horizontal is possible, which is preferably less than 45 °. Particularly preferred is an inclination of less than 30 °.
  • the angle between the upper side 14 of the bending spring member 12 and the guide surface 17 is preferably in the range between 15 ° and 50 °.
  • a clamping device to achieve a bias of the bending spring member 12 may be provided instead of an externally threaded clamping bolt 18 .
  • other bending spring members would also be conceivable as a leaf spring package, for example rod-shaped bending spring members.
  • a leaf spring package has a particularly good spring characteristic, this at a low price.
  • this could have been pivoted by an angle of 24 °, while the seat has been pivoted through an angle of 8 °.
  • the front edge of the seat remains when pivoting the backrest to the rear at the same height or lifts slightly.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (9)

  1. Chaise comportant un châssis porteur (1), un plateau d'assise (6) et un dossier (5) pourvu d'un bras (7) se prolongeant en dessous du plateau d'assise (6) et relié de manière articulée au châssis porteur (1) pour pouvoir pivoter, dans laquelle le bras (7) porte la partie inférieure du plateau d'assise (6) moyennant une liaison pivotante avec celle-ci, la partie supérieure du plateau d'assise (6) est reliée au châssis porteur (1) par un dispositif de palier (11), et avec au moins un élément de ressort de flexion (12) disposé d'un côté du châssis porteur (1) et sur la face supérieure (14) duquel repose, à proximité de son extrémité libre (13) montée de manière résiliente et déviable, une partie de palier (16) montée contre le plateau d'assise (6),
    caractérisée en ce que
    la partie supérieure du plateau d'assise (6) est portée par l'élément de ressort de flexion (12) qui forme une partie du dispositif de palier (11) pour la partie supérieure du plateau d'assise (6) et qui est relié au châssis porteur (1) à proximité de son extrémité tournée vers le dossier (5), et une surface de guidage (17) est réalisée au niveau du châssis porteur (1) afin de créer un contre-palier, la partie de palier (16) ou une autre partie de palier montée sur le plateau d'assise (6) venant se poser contre cette surface de guidage, alors que la face supérieure (14) de l'élément de ressort de flexion (12) retombant vers le bas du côté supérieur de la chaise et la surface de guidage (17) font un angle l'une par rapport à l'autre en étant disposées dans une direction concordante du côté inférieur de la chaise, l'élément de ressort de flexion (12) étant précontraint par rapport à la partie de palier (16) dans l'état non pivoté du dossier (5).
  2. Chaise selon la revendication 1,
    caractérisée en ce que
    la surface de guidage (17) est inclinée, par rapport à l'horizontale, de moins de 45°, de préférence de moins de 30°.
  3. Chaise selon la revendication 2,
    caractérisée en ce que
    la surface de guidage (17) est orientée proche de l'horizontal.
  4. Chaise selon l'une des revendications 1 à 3,
    caractérisée en ce que
    l'angle existant entre la face supérieure (14) de l'élément de ressort de flexion (12) et la surface de guidage (17) se situe entre 15 et 50°.
  5. Chaise selon l'une des revendications 1 à 4,
    caractérisée en ce qu'
    afin de modifier la précontrainte de l'élément de ressort de flexion (12) par rapport à la partie de palier (16), un boulon tendeur (18) traverse l'élément de ressort de flexion (12) par un trou de passage (19) et exerce une tension sur l'élément de ressort de flexion (12) dans la direction du châssis porteur (1), la distance séparant l'élément de ressort de flexion (12) du châssis porteur (1) étant modifiable au moyen du boulon tendeur.
  6. Chaise selon l'une des revendications 1 à 5,
    caractérisée en ce que
    la partie de palier (16) reposant contre la face supérieure (14) de l'élément de ressort de flexion (12) est un galet à montage rotatif.
  7. Chaise selon la revendication 6,
    caractérisée en ce que
    ce galet ou un autre galet à montage rotatif contre le plateau d'assise repose contre la surface de guidage (17).
  8. Chaise selon l'une des revendications 1 à 7,
    caractérisée en ce que
    l'élément de ressort de flexion (12) est un bloc de ressorts à lame.
  9. Chaise selon la revendication 8,
    caractérisée en ce qu'
    une partie des ressorts à lame, située au-dessous du ressort à lame supérieur, est plus courte que le ressort à lame supérieur et se termine avant l'extrémité libre du ressort à lame supérieur.
EP03004014A 2002-03-05 2003-02-24 Chaise Expired - Lifetime EP1342432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3372002 2002-03-05
AT0033702A AT411210B (de) 2002-03-05 2002-03-05 Stuhl

Publications (3)

Publication Number Publication Date
EP1342432A2 EP1342432A2 (fr) 2003-09-10
EP1342432A3 EP1342432A3 (fr) 2004-01-28
EP1342432B1 true EP1342432B1 (fr) 2006-07-19

Family

ID=3672001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004014A Expired - Lifetime EP1342432B1 (fr) 2002-03-05 2003-02-24 Chaise

Country Status (4)

Country Link
EP (1) EP1342432B1 (fr)
AT (1) AT411210B (fr)
DE (1) DE50304264D1 (fr)
ES (1) ES2268180T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356190B4 (de) 2003-12-02 2007-10-04 Christian Erker Sitzlehnenregulierung
AT504897B1 (de) 2007-05-07 2008-09-15 Hansen Eckhard Dipl Ing Sitzmöbel
EP1992255A1 (fr) 2007-05-18 2008-11-19 Eckhard Dipl.-Ing. Hansen Meubles destinés à s'asseoir
WO2016131485A1 (fr) * 2015-02-19 2016-08-25 Simon Desanta Siège
CN110859441B (zh) * 2019-09-05 2024-01-05 广东阳光世纪智能家居科技有限公司 一种园林遮雨式椅子
CN114365905B (zh) * 2022-03-08 2023-05-26 中山市尚美优品家具有限公司 一种具有午休功能的升降式课椅

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA806983A (en) * 1965-07-23 1969-02-25 Dufton Ronald Chair tilting mechanism
FR2045120A5 (fr) * 1969-06-03 1971-02-26 Dupart Jean
DE3735256A1 (de) * 1987-10-17 1989-04-27 Ljubomir Nikov Stuhl oder sessel mit synchron verstellbarer neigung von rueckenlehne und sitz
DE3916474A1 (de) 1989-05-20 1990-11-22 Roeder Soehne Sitzmoebelfab Stuhl, insbesondere arbeits- oder buerostuhl
DE3921755A1 (de) * 1989-07-01 1991-01-10 Koenig & Neurath Kg Arbeitsstuhl mit sitz und rueckenlehne
DE9003589U1 (fr) * 1990-03-28 1991-07-25 Fritz Hansens Eft. A/S, Alleroed, Dk
WO1992020262A1 (fr) * 1991-05-24 1992-11-26 Equus Marketing Ag Siege de travail, notamment siege de bureau
JP2919131B2 (ja) * 1991-10-22 1999-07-12 株式会社イトーキクレビオ 椅子の傾動制御装置
DE4326609C2 (de) * 1993-08-07 1996-03-28 Taipei Design Center Duesseldo Bürodrehstuhl
AT402602B (de) 1995-02-28 1997-07-25 Eckhard Hansen Dipl Ing Stuhl stuhl
KR960039774A (ko) * 1995-04-13 1996-11-25 김광호 자동응답 전화기의 링음성메세지 발생장치 및 그 방법
GB9623230D0 (en) 1996-11-07 1997-01-08 Raychem Sa Nv Cable splice closure
US6250715B1 (en) * 1998-01-21 2001-06-26 Herman Miller, Inc. Chair

Also Published As

Publication number Publication date
ATA3372002A (de) 2003-04-15
EP1342432A3 (fr) 2004-01-28
AT411210B (de) 2003-11-25
ES2268180T3 (es) 2007-03-16
EP1342432A2 (fr) 2003-09-10
DE50304264D1 (de) 2006-08-31

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