WO2020007410A1 - Siège - Google Patents

Siège Download PDF

Info

Publication number
WO2020007410A1
WO2020007410A1 PCT/DE2019/100603 DE2019100603W WO2020007410A1 WO 2020007410 A1 WO2020007410 A1 WO 2020007410A1 DE 2019100603 W DE2019100603 W DE 2019100603W WO 2020007410 A1 WO2020007410 A1 WO 2020007410A1
Authority
WO
WIPO (PCT)
Prior art keywords
abutment
chair
spring
seat
chair according
Prior art date
Application number
PCT/DE2019/100603
Other languages
German (de)
English (en)
Inventor
Thomas Michelsen
Original Assignee
König + Neurath AG
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 König + Neurath AG filed Critical König + Neurath AG
Priority to EP19742677.8A priority Critical patent/EP3817627A1/fr
Priority to CN201980044727.0A priority patent/CN112437619B/zh
Publication of WO2020007410A1 publication Critical patent/WO2020007410A1/fr

Links

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
    • A47C1/03266—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
    • 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
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the invention relates to a chair according to the preamble of claim 5.
  • a chair of the type mentioned is known from patent document DE 10 2007 059 985 B3.
  • This chair consists of a chair base on which a seat and a backrest connected to the seat via a synchronous mechanism are movably mounted, whereby a spring pressing the seat into a basic position of the chair and an abutment rotatably mounted on the chair base are provided Abutment is designed to cooperate with the seat and has a bearing surface 15 on which one end of the spring can be positioned in different positions for setting an effective spring force.
  • the bearing surface of the abutment has so-called locking recesses, in which a locking pin engages. To set the desired effective spring force, the locking pin is moved accordingly with the help of two sliding bearings and a complex planetary gear.
  • the invention has for its object to improve a chair of the type mentioned.
  • a chair 25 is to be created with a structurally less complex mechanism for adjusting the effective spring force.
  • the solution 5 according to the invention is thus characterized in that the position is determined with the aid of an actuating element with which the spring or one end is pulled in order to set the respectively desired effective spring force.
  • the actuating element which will be explained in more detail below, is particularly preferably designed as a chain 10 or rope, that is to say as an element which is referred to in technical mechanics as being limp, since it is in particular not suitable for transmitting compressive forces or moments.
  • the use of such an actuating element brings with it the possibility of providing a comparatively simple actuating mechanism for actuating the actuating element, which is also explained in more detail below.
  • Figure 2 is a perspective view in section of the synchronous mechanism according to Figure 1 in the loaded position with the "soft" acting spring;
  • Figure 3 is a perspective view of the synchronous mechanism according to Figure 1 10 in the unloaded position with a "hard” acting spring;
  • Figure 4 is a perspective sectional view of the synchronizing mechanism according to Figure 1 in the loaded position with the spring set to act "hard”; 15
  • FIG 5 the chair of the invention, in which the in
  • Figures 1 to 4 shown synchronous mechanism is located below the seat or the seat;
  • Figure 6 is a perspective sectional view of the synchronizing mechanism according to Figure 3 in the unloaded position with a 20 "hard” acting spring;
  • FIG. 8 shows a side view of part of the synchronous mechanism 25 according to FIG. 1 in the loaded position with a spring which is set to be “soft”;
  • FIG. 9 shows a perspective exploded view of the abutment according to FIG. 1, in particular with the adjusting element (schematic) and the adjusting wheel; 30
  • FIG. 10 shows in perspective a part of the synchronous mechanism according to FIG. 1, in particular the abutment in lasted position (in this position the spring force can be set) with a "soft" acting set spring;
  • Figure 11 in perspective and in section a part of the synchronous mechanism according to Figure 1, in particular the 5 actuating rod with pin and the rotary shaft with cam in the loaded position;
  • FIG. 12 in perspective and in section, a part of the synchronous mechanism according to FIG. 1, in particular the actuating rod with pin and the rotary shaft with cam guide in the unloaded position;
  • FIG. 13 in perspective and in section, a part of the synchronous mechanism according to FIG. 1, in particular the latching mechanism when the chair is not under load and thus in the open position;
  • FIG. 14 in perspective and in section, a part of the synchronous mechanism according to FIG. 2, in particular the latching mechanism when the chair is under load and thus in the blocked position.
  • the chair shown in Figures 1 to 14 initially consists in a known manner of a preferably provided with a foot 20 chair base 1 on which a seat 2 and a backrest 3 connected via a synchronous mechanism to the seat 2 are movably mounted, one of which is the seat 2 in a basic 25 position of the chair pressing spring 4 and a rotatably mounted on the chair base 1 abutment 5 are provided, the abutment 5 is designed to cooperate with the seat 2 and has a bearing surface 5.1 on which one end of the spring 4 for Setting an effective spring force can be positioned in different positions.
  • two seat supports 10, which are connected to one another via a connecting element 7, are particularly preferably provided, the chair base 1 being arranged between the two seat supports 10 and the connecting element 7 being slidably mounted on the chair base 1. 5
  • a backrest support 9 which is pivotable about a horizontal axis is mounted on the chair base 1.
  • the backrest support 9 and the two seat supports 10 are preferably connected to one another via two swivel joints 11 which are movable independently of the chair base 1 and have horizontal axes.
  • the connecting element 7, which is operatively connected to the seat 2 via the seat carrier 10, is designed to be operatively connected to the abutment 5 for the spring 4.
  • the actuating element 6 is optionally designed as a chain (see FIGS. 1 to 14) or rope (not shown separately).
  • 30 A groove 16 is particularly preferably provided on the abutment 5 for guiding the actuating element 6. This is wider than the actuating element 6, so that it is mounted in the groove 16 so as to be displaceable. 5
  • an adjusting wheel 17 is provided on the abutment 5, which has an axis of rotation extending horizontally in the upright position (ie in the use position) of the chair, for adjusting the adjusting element 6. It is also particularly preferably provided that the setting wheel 17 is arranged on a rotary shaft 22 which is rotatably mounted on the abutment 5 if necessary.
  • the abutment 5 is designed to cooperate on the one hand with the connecting element 7 connected to a front edge of the seat 2 and on the other hand with one end of the spring 4.
  • the connecting element 7 20 cooperating with the abutment 5 is designed to be guided in a longitudinal guide 8 and is arranged in the highest position of the longitudinal guide 8 in the basic position of the seat.
  • the longitudinal guide 8 for the connecting element 7, in the upright position of the chair is designed to fall away from a front edge of the seat 2 in the direction of the backrest 3.
  • the longitudinal guide 8 is also particularly preferably provided that this in the upright position of the Chair from a front edge of the seat 2 from the horizontal with an angle of approximately 10 ° to the backrest 3 is formed sloping. Furthermore, it is preferably provided that the longitudinal guide 8 is semicircular at its two ends, matching the connecting element 5 7 designed as a cylindrical rod.
  • the spring 4 mentioned at the outset which is particularly preferably optionally designed as a helical compression spring and / or a telescopic guide 14 is arranged in the interior thereof, 10 is also particularly preferably provided that one end of the spring 4 with the abutment 5 and another end of the spring 4 is connected to a pivot bearing 12 provided on the chair base 1.
  • the spring 4 viewed in more detail, is designed to be rotatable about a horizontal axis about the rotary bearing 12 15.
  • a second spring 18, preferably also designed as a helical compression spring, is preferably arranged between the connecting element 7 and the chair base 1 for specifying a defined pretension, in the interior of which a telescopic guide 19 is preferably also arranged.
  • a telescopic guide 19 is preferably also arranged.
  • the longitudinal axes (along which the Compression of the springs takes place) of the spring 4 and the second spring 18 lie in mutually parallel planes.
  • a pivot bearing 15 is particularly preferably provided on the chair base 5 (see in particular FIG. 10).
  • This pivot bearing 15, which preferably has a horizontal axis of rotation in the upright position of the chair, is also arranged on an end of the abutment 5 facing away from the seat.
  • pivot bearing 15 is arranged at one end of the abutment 5 and the connecting element 7 is designed to engage the other end of the abutment 5.
  • the abovementioned bearing surface 5.1 of the abutment 5, which is preferably formed by the above-mentioned groove 16 into two elongated partial surfaces, is concavely curved toward the spring 4.
  • the spring 4 on its abutment-side end is designed to bear against the bearing surface 5.1 with a slide 13 that is displaceable relative to the bearing surface 5.1.
  • the slide 13, which is preferably designed to be permanently connected to the actuating element 6, is convexly curved on the abutment side to match the bearing surface 5.1.
  • a rotation of the abutment 5 around its pivot bearing 15 causes a compression of the Fe30 of FIG.
  • the bearing surface 5.1 is provided with a stop for the spring 4 or the slide 13, as seen in both adjustment directions of the spring 4.
  • a force transmission device 21 is further arranged between the connecting element 7 and the abutment 5. As can be seen in particular from FIGS. 7 and 8 and the following description, this serves to ensure that the introduction of the force from the connecting element 7 to the abutment 5 is always parallel to the longitudinal guide 8 and thus due to the toothing of the force transmission device 21 still to be explained practically lossless.
  • the abutment 5 has a first toothing 5.2 on the power transmission device side with preferably at least three teeth, that the force transmission device 21 has a second toothing 21.1 on the bearing side preferably with at least four teeth and that the two toothings 5.2, 21.1 are each convex to each other and are at least partially in engagement with each other.
  • the abutment 30 5 is arcuate, in particular circular arc, and the toothing 5.2 on the force transmission device side a convex outside and the bearing surface 5.1 for the spring 4 is arranged on a concave inside of the abutment 5.
  • the force transmission device 21 is mounted on the connecting element 7 so as to be rotatable about an axis oriented horizontally in the upright position of the chair.
  • the force transmission device 21 has a cylindrical through opening which surrounds the connecting element 7, in particular the aforementioned rod.
  • the force transmission device 21 is formed from two parts, each with a free space for the control element 6, each with a second toothing 21.1.
  • a displacement of the connecting element 7 is designed to cause a displacement and rotation of the force transmission device 21.
  • a displacement and rotation of the force transmission device 21 is designed to cause the abutment 5 to rotate about its pivot bearing 15. 25
  • the actuating element 6, which is preferably designed to be self-contained, is guided around the abutment 5 or that it and preferably also the actuating wheel 17, which will be explained below, is designed to be closing.
  • the adjusting element 6 is designed as a rope, in particular a wire rope, 5 and the adjusting wheel 17 has a guide groove which fits the rope and prevents the rope from slipping (in addition, cylinders or the like can be attached to the rope, for example be, which prevent slipping on the adjusting wheel 17).
  • the setting wheel 17 has an axis of rotation running parallel to the pivot bearing 15 of the abutment 5.
  • an actuating mechanism is also particularly preferably provided, which in particular includes the above-mentioned rotary shaft 22.
  • a spring element 23 is particularly preferably provided for displacing the rotary shaft 22 into a first axial position.
  • a first latching element 22.1 is particularly preferably provided on the rotary shaft 22, which in the first axial position is designed to cooperate with a second latching element 5.3 provided on the abutment 5.
  • the Crown gear toothing is designed as saw tooth toothing, in such a way that movement of the slide 13 on the bearing surface 5.1 in the direction of the pivot bearing 15 is or is reliably prevented.
  • an actuating rod 24 that is operatively connected to the rotary shaft 22 is preferably provided.
  • an actuating mechanism is preferably provided to effect an axial displacement of the rotary shaft 22 into a second axial position. This is preferably formed from a pin 24.1 provided on the actuating rod 24 10 and from a cam guide 22.2 provided on the rotary shaft 22 and interacting with the pin 24.1.
  • the rotary shaft 22 preferably has a through hole penetrated by part of the adjusting rod 24.
  • the adjusting rod 24 is preferably rotatably, but axially immovably mounted on the abutment 5.
  • a rotary movement on the actuating rod 24 causes the pin 24.1 to move along a wall of the curve guide 22.2.
  • This in turn leads to the said axial displacement of the rotary shaft 22 and thus to the fact that the two latching elements 22.1, 5.3 separate from one another, which then has the consequence that the adjusting wheel 17 is rotated and the slide 13 can thus be adjusted.
  • a locking mechanism 30 preventing the rotation shaft 22 from rotating when the chair is loaded is particularly preferably provided.
  • This is particularly preferably made of a non-rotatable, but preferably axially displaceable with the Rotary shaft 22 connected ratchet wheel 26 and a slidably mounted on the abutment 5, spring-loaded and cooperating with the ratchet wheel 26 blocking element 27 (if, as in the illustrated embodiment, the blocking element 27 is wide enough, it can be dispensed with that the ratchet wheel 26 is axially displaceably mounted on the rotary shaft 22).
  • the blocking element 27 cooperates with the chair base 1 when the chair is unloaded and releases the ratchet wheel 26 and the ratchet wheel 26 is designed to block 10 when the chair is loaded.
  • the ratchet wheel 26 has sawtooth teeth, again such that movement of the slide 13 on the bearing surface 5.1 in the direction of the rotary bearing 15 is reliably prevented or will.
  • the adjusting wheel 17 is preferably embodied in a fixed manner with the rotary shaft 22, it is further preferably provided that the adjusting element 6 is at least displaceably mounted at least in the region of the adjusting wheel 17 parallel to the axis of rotation of the abutment 5.
  • guide elements 28, preferably in the form of screw bolts, are preferably provided on both sides of the setting wheel 17 and 25 to ensure good guidance of the setting element 6.

Landscapes

  • 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)

Abstract

L'invention concerne un siège, comprenant une base de siège (1) sur laquelle sont montés de manière articulée une assise et un dossier relié à l'assise par l'intermédiaire d'un mécanisme synchrone. Sont prévus un ressort (4) appuyant sur l'assise pour maintenir cette dernière dans une position de base et un contre-appui (5) monté rotatif sur la base de siège (1), le contre-appui (5) étant conçu coopérant avec le siège et présentant une surface d'appui (5.1) sur laquelle une extrémité du ressort (4) peut être positionnée dans différentes positions pour le réglage d'une force élastique efficace. Selon l'invention, un élément de réglage (6) transmettant exclusivement des forces de traction est prévu sur la surface d'appui (5.1) aux fins d'immobilisation de ladite extrémité du ressort (4).
PCT/DE2019/100603 2018-07-02 2019-06-28 Siège WO2020007410A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19742677.8A EP3817627A1 (fr) 2018-07-02 2019-06-28 Siège
CN201980044727.0A CN112437619B (zh) 2018-07-02 2019-06-28 椅子

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018115924.2 2018-07-02
DE102018115924.2A DE102018115924A1 (de) 2018-07-02 2018-07-02 Stuhl

Publications (1)

Publication Number Publication Date
WO2020007410A1 true WO2020007410A1 (fr) 2020-01-09

Family

ID=67402778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/100603 WO2020007410A1 (fr) 2018-07-02 2019-06-28 Siège

Country Status (3)

Country Link
EP (1) EP3817627A1 (fr)
DE (1) DE102018115924A1 (fr)
WO (1) WO2020007410A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11812870B2 (en) 2021-02-10 2023-11-14 Steelcase Inc. Body support structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1440632A1 (fr) 2003-01-22 2004-07-28 Klöber Gmbh & Co. Chaise avec l'accumulateur de force réglable rapide
DE102007059985B3 (de) 2007-12-11 2009-04-09 Sedus Stoll Ag Vorrichtung zur Federkraftverstellung bei einem Bürostuhl
DE102015101545A1 (de) * 2015-02-03 2016-08-04 Bock 1 Gmbh & Co. Kg Synchronmechanik
DE102015101546A1 (de) * 2015-02-03 2016-08-04 Bock 1 Gmbh & Co. Kg Synchronmechanik

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007006762U1 (de) * 2006-10-13 2008-02-14 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1440632A1 (fr) 2003-01-22 2004-07-28 Klöber Gmbh & Co. Chaise avec l'accumulateur de force réglable rapide
DE102007059985B3 (de) 2007-12-11 2009-04-09 Sedus Stoll Ag Vorrichtung zur Federkraftverstellung bei einem Bürostuhl
DE102015101545A1 (de) * 2015-02-03 2016-08-04 Bock 1 Gmbh & Co. Kg Synchronmechanik
DE102015101546A1 (de) * 2015-02-03 2016-08-04 Bock 1 Gmbh & Co. Kg Synchronmechanik

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11812870B2 (en) 2021-02-10 2023-11-14 Steelcase Inc. Body support structure

Also Published As

Publication number Publication date
EP3817627A1 (fr) 2021-05-12
CN112437619A (zh) 2021-03-02
DE102018115924A1 (de) 2020-01-02

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