EP0187161B1 - Sitzmöbel mit klemmeinrichtung zum verstellen der neigung von rückenlehne und/oder sitzteil - Google Patents

Sitzmöbel mit klemmeinrichtung zum verstellen der neigung von rückenlehne und/oder sitzteil Download PDF

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Publication number
EP0187161B1
EP0187161B1 EP85903225A EP85903225A EP0187161B1 EP 0187161 B1 EP0187161 B1 EP 0187161B1 EP 85903225 A EP85903225 A EP 85903225A EP 85903225 A EP85903225 A EP 85903225A EP 0187161 B1 EP0187161 B1 EP 0187161B1
Authority
EP
European Patent Office
Prior art keywords
seat
eccentric
chair according
friction lock
clamping device
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
Application number
EP85903225A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0187161A1 (de
Inventor
Rolf Völkle
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
Priority to AT85903225T priority Critical patent/ATE34511T1/de
Publication of EP0187161A1 publication Critical patent/EP0187161A1/de
Application granted granted Critical
Publication of EP0187161B1 publication Critical patent/EP0187161B1/de
Expired legal-status Critical Current

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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
    • 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
    • A47C1/027—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 by means of clamps or friction locking members

Definitions

  • the invention relates to seating furniture in accordance with the preamble of patent claim 1.
  • the clamping device In a known seating of this type (DE-C-29 27 377), the clamping device is axially supported on the seat part or on the seat part carrier, on which the lever for the frictional displacement is also mounted.
  • the lamella friction lock can be controlled with the help of the two-armed lever with the participation of preloadable disc springs.
  • the frictional engagement is brought about and maintained by the disc springs.
  • Such a clamping principle is therefore relatively complex in terms of production technology.
  • the plate springs are compressed using the actuating lever until the frictional engagement is released. This requires a relatively large pivoting path of the lever.
  • the eccentric In the known clamping devices, the eccentric is in any case supported on a stationary part of the seating furniture. Therefore, the axial movement required to manufacture or release the lamella frictional connection is brought about exclusively by the axial thrust of the non-stationary (drive) part of the eccentric, which must be designed for a correspondingly long thrust because the rise in the eccentric curve is extremely small.
  • the invention has for its object to develop a seating of the type mentioned in such a way that, under more favorable conditions for a rational series production, the pivoting path of the lever for operating the eccentric is relatively short despite a slight increase in the eccentric curve and, thanks to this slight increase in the eccentric curve, is also an extremely small one Actuating force for the eccentric is required.
  • FIG. 4 the seat part without the seat shell of the seating furniture with a tilt-adjustable carrier for the backrest in a top view
  • FIG. 5 the seat part according to FIG. 4 in a bottom view
  • FIG. 6 shows the seat part according to FIG. 4 in section along line VI-VI from FIG. 4,
  • FIG. 6a shows the seat part according to FIG. 4 in section along line Vla-Vla from FIG. 4.
  • the clamping device is in support bearings 10a; 10a 'of vertical ribs of the seat part arranged approximately symmetrically to the plane of symmetry aa of the seating furniture.
  • the clamping device comprises a package (plate package 12; 12 ') of plates 12a; 12a '. which are articulated on the backrest and / or on the seat part carrier. It also comprises a packet (friction disk packet 13; 13 ') of coaxial friction disk 13a; 13a '; which rest on the lamellas with frictional surfaces.
  • a clamping bolt 14; 14 ' which passes through the slats via elongated holes as well as the friction washers and the vertical ribs receiving the clamping device.
  • the clamping device comprises a manually operable eccentric 17; 17 'to control the Clamping device by means of relative displacement (frictional displacement) between clamping bolts 14, 14 'on the one hand and plate pack and friction plate pack 13, 13' on the other hand. It is essential that the clamping device as a structural unit via friction discs 13a; 13a 'is axially movably received in the support bearings 10a, 10a' and is held in its axial position by the disk pack.
  • “Self-locking eccentric in the above sense is understood to mean an eccentric whose eccentric curves with such a flat rise angle at the frictional engagement.
  • the friction disk package 13; 13 ' is constructed and arranged such that a plane of symmetry perpendicular to its axis coincides approximately with the plane of symmetry aa of the seating furniture. This results in an approximately approximately symmetrical arrangement of the clamping device with respect to the plane of symmetry aa.
  • the clamping device In this symmetrical position, despite its axially movable mounting in the support bearings, the clamping device is approximately guided by the lamellae 12a; articulated at one end or at both ends on a pivot axis. 12a 'held.
  • the pivot axis 16; 16 'of the eccentric 17; 17 ' is designed as a cylindrical bearing bolt which is perpendicular to the clamping bolt and is penetrated by it via a bore.
  • the bearing pin has an internal thread in its bore with the clamping pin 14; 14 'engaged.
  • the eccentric 17; 17 ' has two eccentric disks 17a; 17a 'on the free ends of the pivot axis 16; 16 'serving bearing bolt are stored.
  • the support bearings 10a located on one side of the plane of symmetry aa; 10a 'are each from a single friction disc 13a; 13a 'interspersed. Compared to the friction discs 13b; 13b 'which in the area between the slats 12a; 12a 'are arranged, therefore have the friction discs 13a; 13a 'in the area of the support bearings 10a; 10a 'have a much larger dimension in their axial direction. All support bearings 10a; 10a 'are part of a single casting, which is a plastic molding in the exemplary embodiment of FIGS. 1-3, 3a and an aluminum casting in the exemplary embodiment of FIGS. 4-6, 6a.
  • the seat part is formed by a support shell 10 and an approximately congruent seat shell (not shown in the drawing) supported on this support shell.
  • the seat shell lies on the edge of the support shell 10 and is also supported and centered on its support columns 10f.
  • numerous reinforcing ribs 10c run symmetrically to the plane of symmetry a-a.
  • Sleeves are formed on two vertical stiffening ribs running parallel to this plane of symmetry a-a, which form the support bearing 10a for the clamping device.
  • Fastening surfaces 10d accommodate the supports for the armrests. Breakthroughs 10e serve to carry out the actuating member for the height adjustment of the seat part.
  • An upward shaping 10g in the bottom of the support shell 10 creates a space for pivoting the eccentric 17.
  • an approximately cuboidal housing part 1Oh which is open on the rear is formed.
  • a carrier 11 formed by a hollow plastic injection molding is delimited by means of pivot axis 30 and is pivotably supported.
  • the plastic molding runs out into an approximately vertical sleeve 11a, which is suitable for receiving the support arm for the backrest.
  • a return spring 31 gives the backrest the tendency to lean towards the back of the user of the seating furniture, who brings about the desired inclination of the backrest by appropriately leaning against the backrest.
  • the articulation axis 18 is mounted in the carrier 11 at a distance from the pivot axis 30 and parallel to it.
  • the seat part and thus also the seat shell 10 are rigidly attached to the central support spindle of the seating furniture.
  • a sleeve 10b is molded into the seat shell 10, which is lined by a metal bushing 25.
  • the support shell 10 is at the same time seat part carrier, which receives the seat part in the form of the seat shell.
  • the seat part is formed by a support frame 10 'and a seat shell, not shown in the drawing.
  • the latter is mounted on support surfaces 10d 'of the support frame and connected to it by means of fastening elements 10f.
  • Frame legs of the support frame 10 'running parallel to the plane of symmetry aa each have two stiffening ribs 10c'; 10c ", which also run parallel to the plane of symmetry aa.
  • the support bearings 10a 'for the clamping device are formed by coaxial bores in these stiffening ribs 10c', 10c".
  • the thin stiffening ribs 10c "(FIGS. 4, 6) run close to the plane of symmetry aa.
  • the articulation axis 18 ' is received in tabs 20a of the support 20 for the backrest, which is articulated to an axis 31 of the support frame 10' with the aid of a bearing sleeve 22
  • the support Frame 10 ' is pivotally connected to the seat part support 23 by means of its pivot pin 10k.
  • the pivot bearing pins 10k are received in bearing sleeves 23a, which are molded onto the seat part carrier 23.
  • the seat part support 23 is received by the support spindle of the base frame via the central bore 23b.
  • the inclination of the seat part can be adjusted by the user of the seating furniture by corresponding shifting of the center of gravity against the action of a return spring 37, which is supported at 33 at 33 on the support frame 10 'and at the other end on the non-pivotable seat part carrier 23.
  • a return spring 37 which is supported at 33 at 33 on the support frame 10 'and at the other end on the non-pivotable seat part carrier 23.
  • the bores of the ribs 10c 'and 10c "are penetrated on each side of the plane of symmetry by a single friction-locking disc 13a"
  • the spatial assignment of the articulation axes 18 ', 34 and the clamping bolt 14' is such that, when the inclination is adjusted with the clamping device, there is an adjustment ratio between the seat part 23 and the backrest of approximately 1: 2.
  • the clamping bolt is by means of a screw nut 15; 15 'supported on the friction disk set 13, 13'.
  • the eccentric and clamping bolt are secured against rotation by means of ribs 36 on the carrier frame 10 '(FIG. 5).

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP85903225A 1984-07-10 1985-07-08 Sitzmöbel mit klemmeinrichtung zum verstellen der neigung von rückenlehne und/oder sitzteil Expired EP0187161B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85903225T ATE34511T1 (de) 1984-07-10 1985-07-08 Sitzmoebel mit klemmeinrichtung zum verstellen der neigung von rueckenlehne und/oder sitzteil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3425387 1984-07-10
DE19843425387 DE3425387A1 (de) 1984-07-10 1984-07-10 Sitzmoebel mit klemmeinrichtung zum verstellen der neigung von rueckenlehne und/oder sitzteil

Publications (2)

Publication Number Publication Date
EP0187161A1 EP0187161A1 (de) 1986-07-16
EP0187161B1 true EP0187161B1 (de) 1988-05-25

Family

ID=6240280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85903225A Expired EP0187161B1 (de) 1984-07-10 1985-07-08 Sitzmöbel mit klemmeinrichtung zum verstellen der neigung von rückenlehne und/oder sitzteil

Country Status (6)

Country Link
US (1) US4693514A (enrdf_load_stackoverflow)
EP (1) EP0187161B1 (enrdf_load_stackoverflow)
AU (1) AU4601585A (enrdf_load_stackoverflow)
CA (1) CA1250516A (enrdf_load_stackoverflow)
DE (2) DE3425387A1 (enrdf_load_stackoverflow)
WO (1) WO1986000508A1 (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8627482U1 (de) * 1986-10-15 1989-07-06 Völkle, Rolf, 7298 Loßburg Sessel
US4883319A (en) * 1988-12-16 1989-11-28 Hoover Universal, Inc. Self-locking spacer bushing
EP0394784A1 (en) * 1989-04-27 1990-10-31 Lineager S.R.L. Friction device for adjusting the inclination of a seat, in particular an office chair
DE3930983C2 (de) * 1989-09-16 1993-09-30 Rolf Voelkle Sitzmöbel mit neigungsverstellbarer Sitzfläche
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
GB2246287B (en) * 1990-06-12 1993-10-20 Unit Press Limited Back support pillar for a chair
DE4027730A1 (de) * 1990-09-01 1992-03-12 Braeutigam Moebel Product Mark Sitzmoebel
IE66891B1 (en) * 1991-02-15 1996-02-07 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture
IT224288Z2 (it) * 1991-12-20 1996-03-14 Cofemo Spa Supporto centrale di sostegno e regolazione della posizione di inclinazione per sedie a seduta oscillante
US5328242A (en) * 1992-03-18 1994-07-12 Steelcase Inc. Chair with back lock
US5282670A (en) * 1992-04-20 1994-02-01 Steelcase Inc. Cable actuated variable stop mechanism
US5630648A (en) * 1992-08-27 1997-05-20 Harry C. Sweere Dynamic posture chair
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism
US5560682A (en) * 1992-12-01 1996-10-01 Klasse Pty Ltd Adjustment mechanism for a chair
US5505522A (en) * 1994-01-31 1996-04-09 La-Z-Boy Chair Company Deflectable seat back
US5577807A (en) * 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
ES2126319T3 (es) * 1994-10-17 1999-03-16 Sifa Sitzfabrik Gmbh Soporte de asiento para sillas de oficina o similares.
US5725276A (en) * 1995-06-07 1998-03-10 Ginat; Jonathan Tilt back chair and control
CA2330073A1 (en) 2001-01-04 2002-07-04 Silhouet-Tone Ltee Clamping device for controlling rotation of a chair about a support shaft of a base frame
US6893096B2 (en) 2002-09-05 2005-05-17 A-Dec, Inc. Headrest support and adjustment mechanism
WO2015161281A1 (en) 2014-04-17 2015-10-22 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
TWI827479B (zh) * 2023-02-22 2023-12-21 陳信華 椅子調整裝置的控制拉桿結構

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390949A (en) * 1932-04-06 1933-04-20 Leabank Mfg Company Ltd Improvements relating to chairs and like seats
DE936353C (de) * 1952-07-23 1955-12-07 Carl Ernst Edward Lundquist Einstellvorrichtung fuer Stuehle od. dgl., deren Sitz, Beine, Rueckenstuetze durch koaxiale, elastische Kupplungen untereinander verbunden sind
US2903046A (en) * 1956-10-01 1959-09-08 Cali Quilt Furniture Corp Variable pitch tilting seat and backrest mounting
DE2335586A1 (de) * 1973-01-29 1975-01-30 Fritz Kerstholt Sitz- und/oder liegemoebel mit bewegbarem rueckenteil
US4062587A (en) * 1976-01-13 1977-12-13 Herman Miller, Inc. Back position control device for chairs
NO143253C (no) * 1977-08-25 1981-01-14 Staal & Stil As Anordning ved arbeidsstol.
DE2927377C2 (de) * 1979-07-06 1983-12-08 Steifensand Sitzmöbel- und Tischfabrik Inh.: F. Martin Steifensand, 8501 Wendelstein Sitzmöbel, insbesondere Bürodrehstuhl

Also Published As

Publication number Publication date
DE3425387A1 (de) 1986-02-27
US4693514A (en) 1987-09-15
EP0187161A1 (de) 1986-07-16
CA1250516A (en) 1989-02-28
DE3562861D1 (en) 1988-06-30
DE3425387C2 (enrdf_load_stackoverflow) 1988-05-05
WO1986000508A1 (en) 1986-01-30
AU4601585A (en) 1986-02-10

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