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
  • A47C1/00—Chairs adapted for special purposes
  • A47C1/02—Reclining or easy chairs
  • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
  • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
• • 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
  • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
• • 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
  • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
  • A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
• • 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
• • 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
  • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

• the present invention relates to a chair of the type with a base placed on the floor, on which a synchronous mechanism is mounted.
• the synchronous mechanism has a fixed, horizontal main axis of rotation and a horizontal secondary axis of rotation, which is pivotable about the main axis of rotation.
• the synchronous mechanism also has a fixed base that is intended to be placed on the base frame and through which the main axis of rotation runs.
• a swiveling seat support is arranged above the base, through which the secondary axis of rotation runs and which is provided for fastening a seat.
• Further connecting means are provided opposite the secondary axis of rotation as a connection between the base and the seat support.
• a backrest is attached to the synchronous mechanism, which causes a synchronized movement of the seat and backrest, and can be pivoted about the fixed main axis of rotation against the resistance of a spring unit.
• the invention deals with the compact design and multiple functionality of the synchronous mechanism within a chair structure designed thereon.
• the invention is based on the task of proposing a chair of the type defined at the beginning with a perfected synchronous mechanism, so that the basic
• BESTATIGUNGSKOPIE suitable for chairs of various designs and degrees of equipment. This is intended to make series production more efficient and at the same time to further improve the functions.
• the chair initially has a base on the floor, on which a synchronous mechanism is mounted.
• the synchronous mechanism has a fixed, horizontal main axis of rotation and a horizontal secondary axis of rotation, which is pivotable about the main axis of rotation.
• the synchronous mechanism consists of a fixed base, which is intended to be placed on the base and through which the main axis of rotation extends.
• a pivotable seat support is arranged above the base, through which the secondary axis of rotation extends and which is provided for fastening a seat.
• First connecting means are articulated on the one hand on the main axis of rotation and on the other hand on the secondary axis of rotation.
• Second connecting means are arranged opposite the secondary axis of rotation as a connection between the base and the seat support.
• a backrest is attached to the synchronous mechanism and can be pivoted about the fixed main axis of rotation against the resistance of a spring assembly, the movements of the seat and backrest being synchronized with one another.
• the hallmark is that the backrest has extensions which are supported in a self-supporting manner by the first connecting means.
• the following features relate to special designs of the invention: on the backrest there are two extensions spaced parallel to one another, each having a first and a second holding contour.
• the first holding contours are suspended on the secondary axis of rotation and in each case partially encompass an axis element of the first connecting means from below.
• the second holding contours rest on the first connecting means.
• the first holding contours can be hung on the extensions of the backrest (in the state of the inclination of the backrest in the direction of the front edge of the seat under the axle elements of the first connecting means. ken the backrest in the direction of the in principle vertical position of use, the first holding contours underlap the axle elements on the side facing the front edge of the seat in an ascending, claw-like manner.
• the second holding contours are pressed against the first connecting means by the torque generated by the dead weight of the backrest and its increase with increasing pressure in the backrest.
• the first connecting means are in principle two angle pieces, with each angle piece having the basically cylindrical axis element at the end associated with the secondary axis of rotation.
• the second holding contours on the extensions of the backrest are counter-angles, each counter-angle being supported on the associated angled piece, which engages under it.
• the second holding contours are screwed onto the extensions of the backrest on the angle pieces.
• a receptacle for the adjustable insertion of a support arm is provided on each side of the synchronous mechanism and is part of an armrest.
• the insertion depth of the free end of the support arm into the mounting socket is variable, which means that the span between the two armrests on the chair can be adjusted.
• the receptacle is designed as a sleeve piece with a basically rectangular inner cross section, and the free end of the support arm is designed as a sliding piece.
• An elongated hole is provided in the slider, through which the bolt of a tensioning screw protrudes, which engages in the socket and serves to fix the selected span of the armrests.
• the receptacles extend from the seat support.
• the spring assembly in the synchronous mechanism contains at least one mechanical spring and one gas spring.
• the spring assembly in the synchronous mechanism advantageously consists of two coil springs and a gas spring, the three springs being connected in parallel.
• the gas spring acts in particular as an attenuator when the backrest is in the approximately vertical zero position. ne beginning deflection in the backward inclined position.
• the preload generated by the spring assembly can be adjusted by means of an actuator.
• the synchronous mechanism also has: a) a locking element for blocking the free synchronous movement; b) an adjusting device for the gradual selection of the depth of the seat in relation to the seat support; c) a device for adjusting a forward inclination of the seat support; and d) a vertical opening at the base for inserting the extending outer tube of a vertical gas spring positioned vertically in the base frame; and e) as a second connecting means between the base and the seat support, a link guide within which the seat support moves during the synchronous movement.
• a preferably elastic cover is provided, which is releasably fixed to a cross member of the backrest with a reference holder.
• a reference end is attached to a base plate that is arranged on the cross member, while a second reference end is attached to a locking plate that can be attached to the base plate.
• Figure 1A a chair according to the invention, in front view;
• Figure 1B the chair according to Figure 1A, in side view;
• Figure 2A - a synchronous mechanism from Figure 1C, in an enlarged perspective view (without the spring assembly);
• Figure 2B the synchronous mechanism according to Figure 2A (with the spring assembly), in an exploded view
• Figure 2C the synchronous mechanism according to Figure 2A (with the spring assembly), in plan view;
• Figure 2D the synchronous mechanism according to Figure 2C, in perspective side view;
• Figure 2E the synchronous mechanism according to Figure 2C, in perspective side view from behind;
• Figure 2F the synchronous mechanism according to Figure 2C, in a perspective side view from below;
• FIG. 4A - a separate backrest with the extensions, in perspective view
• Figure 4B hanging the backrest on the synchronous mechanism, in the initial phase, as a schematic diagram
• FIG. 4C a backrest that is completely attached to the synchronous mechanism, as a basic illustration
• Figure 5A an armrest with support arm and slide and tension screw, in perspective
• Figure 5B an armrest used in the receiving neck, in plan view
• Figure 5C the armrest used in the socket, with the entire synchronous mechanism, in perspective view from below;
• FIG. 6A a holder for the cover over the backrest, as a schematic diagram; and FIG. 6B - the separate base plate and locking plate of a reference holder, in a perspective view.
• FIG. 1 contains reference numerals for the sake of clarity of the drawing, but is not explained in the directly associated description text, so reference is made to their mention in the previous description of the figures. in the For the sake of clarity, the repeated designation of components in the following figures is mostly dispensed with, provided that it can be clearly seen in the drawing that the components are "recurring".
• the chair rests on a base frame 1 which is placed on the floor and on which the synchronous mechanism 2 is mounted.
• the fixed, horizontal main axis of rotation D1 and the horizontal secondary axis of rotation D2, which can be pivoted about the main axis of rotation D1, run through the synchronous mechanism 2.
• the synchronous mechanism 2 has:
• a fixed base 20 which is intended to be placed on the base 1 and through which the main axis of rotation D1 extends;
• a seat support 21 pivotably arranged above the base 20, through which the secondary axis of rotation D2 extends and which is provided for fastening a seat 3;
• Second connecting means 23 which are arranged opposite the secondary axis of rotation D2 as a connection between the base 20 and the seat support 21.
• the backrest 4 is fastened to the synchronous mechanism 2 and can be pivoted about the fixed main axis of rotation D1 against the resistance of a spring assembly 24, the movements of the seat 3 and backrest 4 being synchronized with one another.
• the backrest 4 has extensions 40 which are supported on the first connecting means 22 in a self-supporting manner.
• the backrest 4 are two extensions 40 spaced parallel to one another, each having a first and a second holding contour 401, 402.
• the first holding contours 401 are suspended on the secondary axis of rotation D2 and in each case partially encompass an axis element 220 of the first connecting means 22 from below.
• the second holding contours 402 abut the first connecting means 22.
• the first holding contours 401 can be attached to the extensions 40 of the back in the state of inclination of the backrest 4 in the direction of the seat front edge 30, hang the backrest 4 under the axle elements 220 of the first connecting means 22.
• the first holding contours 401 grasp the axis elements 220 on the side facing the front edge 30 of the seat in an ascending, claw-like manner.
• the second holding contours 402 are pressed against the first connecting means 22 by the torque generated by the dead weight of the backrest 4 and its increase with increasing pressure in the backrest 4.
• the first connecting means 22 are in principle two angle pieces 22, each angle piece 22 having the basically cylindrical axis element 220 at the end associated with the secondary axis of rotation D2.
• an opening 221 is provided in the angle piece 22, which allows the first holding contour 401 to be hooked onto the axis element 220.
• the second holding contours 402 on the extensions 40 of the backrest 4 are counter-angles 402, each counter-angle 402 being supported under the associated angle piece 22.
• the second holding contours 402 are screwed onto the extensions 40 of the backrest 4 on the angle pieces 22, preferably in the lower area.
• a receptacle 25 for the adjustable insertion of a support arm 50, which is part of an armrest 5.
• the insertion depth of the free end of the support arm 50 in the receiving socket 25 is variable, so that the span between the two armrests 5 present on the chair can be adjusted.
• the receptacle 25 is designed as a sleeve piece 25 with a basically rectangular inner cross section, and the free end of the support arm 50 is designed as a slider 500.
• an elongated hole 501 is provided, through which the bolt 510 of a clamping screw 51 protrudes, which engages in the receptacle 25 and serves to fix the selected span of the armrests 5.
• Nipples 25 extend from the seat support 21. In principle, the clamping screw 51 does not need to absorb any forces acting on the armrests 5 from above.
• the spring assembly 24 in the synchronous mechanism 2 contains at least one mechanical spring 240 and a gas spring 241.
• the spring assembly 24 of the synchronous mechanism 2 preferably contains two coil springs 240 and a gas spring 241, the three springs 240, 240, 241 being connected in parallel.
• the gas spring 241 acts in particular as an attenuator in the case of the deflection starting from the approximately vertical zero position of the backrest 4 into the backward inclined position.
• the preload generated by the spring assembly 24 can be adjusted by means of the actuator 242.
• the synchronous mechanism 2 also has:
• a preferably elastic cover 41 is provided, which is releasably fixed to the cross member 43 of the backrest 4 with a cover holder 42.
• a reference end is attached to a base plate 420, which is arranged on the cross member 43, and a second reference end is attached to a detent plate 421, which can be attached to the base plate 420.
• the cover 41 can be removed relatively easily, for example for cleaning purposes.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=34957641

Family Applications (1)

Country Status (4)

Families Citing this family (16)

Family Cites Families (20)

• 2004
  • 2004-06-14 CN CNA2004800056321A patent/CN1984583A/zh active Pending
  • 2004-06-14 WO PCT/CH2004/000360 patent/WO2005120291A1/de active Application Filing
  • 2004-06-14 EP EP04736739A patent/EP1758484A1/de not_active Withdrawn
  • 2004-06-14 US US11/629,565 patent/US20080067848A1/en not_active Abandoned

Non-Patent Citations (1)

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