EP0648452B1 - Höhenverstellung für Rückenlehnen von Stühlen - Google Patents

Höhenverstellung für Rückenlehnen von Stühlen Download PDF

Info

Publication number
EP0648452B1
EP0648452B1 EP94112672A EP94112672A EP0648452B1 EP 0648452 B1 EP0648452 B1 EP 0648452B1 EP 94112672 A EP94112672 A EP 94112672A EP 94112672 A EP94112672 A EP 94112672A EP 0648452 B1 EP0648452 B1 EP 0648452B1
Authority
EP
European Patent Office
Prior art keywords
clamping body
height adjustment
clamping
lever
adjustment according
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
EP94112672A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0648452A2 (de
EP0648452A3 (de
Inventor
Konrad Neumüller
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.)
Sifa Sitzfabrik GmbH
Original Assignee
Sifa Sitzfabrik 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.)
Filing date
Publication date
Application filed by Sifa Sitzfabrik GmbH filed Critical Sifa Sitzfabrik GmbH
Publication of EP0648452A2 publication Critical patent/EP0648452A2/de
Publication of EP0648452A3 publication Critical patent/EP0648452A3/de
Application granted granted Critical
Publication of EP0648452B1 publication Critical patent/EP0648452B1/de
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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/402—Support for the head or the back for the back adjustable in height

Definitions

  • the invention relates to a height adjustment for Backrests of chairs, especially of Office swivel chairs, with the features of the preamble of Claim 1.
  • Screw clamps for adjusting the height of a Backrest consisting of a possibly padded back plate that is made with a Fastener is connected, which longitudinally displaceable on a backrest support is arranged, and wherein locking means for mutual jamming of backrest supports and Fastener are available have long been known.
  • the object of the invention is a height adjustment for Backrests of chairs, especially of To create office swivel chairs that are high It is easy to use and easy to use different backrest supports to adapt.
  • a locking means Height adjustment for backrests of chairs type mentioned from a sprag that on the opposite side of the backplate Fastener is arranged.
  • the sprag has at least one through hole or at least a continuous slot and at least one anchor is at one end through a hole or one Passed slot of the fastener and with Undercuts kept in this.
  • the anchor is passed through the clamping body and by means of a hole and a bolt with a Lever connected, the lever is pivotable about the bolt stored and has an approach that is jamming pivotable between the bolt and the clamping body is what the tensile force exerted on the anchor and the simultaneous pressure on the clamp body Fastening element and the backrest support to each other notes. It is advantageous if the approach is around a short distance over the highest pressure point can be swung in and comes into a rest position.
  • the clamping body is advantageously between the Fastener and the bolt adjustable in height designed.
  • the clamping body consists of two adjacent and slidable against each other on an inclined surface Share, at least between stops of both parts a compression spring is arranged, which both parts tends to push apart along the slope.
  • Clamping body an elastic element made of hard rubber or an elastomer.
  • a pressure body is between the approach of the lever and the Clamping body arranged a pressure body.
  • This Pressure body is on one side, for example side pin of the approach of the lever swiveling stored and rounded on its other side and lies in a trough of the clamping body, the pressure body with the approach swung in over the highest pressure point of neck and pressure body in a clamping locking position is feasible.
  • the height adjustment shown in FIGS. 1 to 3 is here with a backrest made of back plate 1, Backrest support 2 and fastener 3 shown.
  • the back plate 1, which is a wooden plate or a Plastic or metal shell can be with the flat fastener 3 screwed.
  • the fastener 3, which is made of metal or plastic can exist, rests on the backrest support 2, being between the fastener 3 and the Backrest support 2 at least matching, preferably profiled sliding surfaces are arranged.
  • the fastening element 3 and the backrest support 2 are connected by the clamping device shown in Fig. 1 in the open and in Fig. 2 in the closed position is shown. One side of the clamp is through Undercuts 15 of an armature 7 formed by Slots in the fastener 3 and the Backrest support 2 is guided.
  • the slot 16 in Fastening element 3 is designed so that the Anchor 7 with its undercuts 15 behind and next to it this comes to mind, while the slot 22 in Backrest support 2 has the length by which the Backrest along the backrest support 3 maximum should be moved.
  • Through the holes 9, 14 is a Bolt 10 inserted so that the lever 8 is pivotable on the Anchor 7 is mounted.
  • the clamping body consists of two rectangular parts 4, 5 with a triangular cross-section, so that there are two sloping Surfaces with which the two parts 4, 5 so lie together that a total of about rectangular cross section results.
  • Both parts 4, 5 can slide against each other on the sloping surfaces, being held together and limited in their movement be that a part 4 laterally pin 21 and that other part towering webs 20 with elongated holes 20 ' having.
  • the sloping surfaces of both parts are as in Fig. 6 in more detail using a bottom view of part 4 is shown, provided with longitudinal grooves 24, each at the flat end of part 4, 5 with stops 4 ' are provided and in which there are compression springs 6 which two parts 4, 5 along their slopes looking to push apart.
  • Both Parts 4, 5 of the sprag strive to be larger Total height compared to the fastening element 3 achieve what is due to wear and tear or fatigue the original elasticity of individual parts always by a quasi growing sprag again will be produced.
  • Both parts 4, 5 of the clamping body have central slots 25 for the armature 7. Between the clamp body and the fastener 3 is one slotted spacer plate 13 inserted.
  • the lever 8 In the open position, the lever 8 is around the bolt 14 pivoted outwards and has the pin 19 in the elongated holes 12 of the pressure body 11 in a brought inclined position. Between Undercuts 15 of the armature 7 and the clamping body 4, 5 there is no clamping.
  • the backrest can be move along the backrest support 2, whereby laterally between a lower area of the Fastening element 2 and an upper area of the Backrest support 2 tension springs 23 indicated in FIG. 5 are attached, the fastener 3 upwards to try to pull.
  • Lever 8 is used to clamp the backrest pivoted below and pulls over its pin 19 in the Elongated holes 12 of the pressure body 11 in a substantial vertical position to that Fastening element 3.
  • the articulated insertion of the Pressure body 11 between the neck 8 '' of the lever 8 and the clamp body has a snap effect that the User makes the setting function noticeable.
  • the Swiveling the pressure body 11 becomes a tensile force the anchor 7 and at the same time a pressure force on the Clamping body exercised, causing the backrest on the Backrest support is clamped.
  • the pressure hull slides a minimal path over the largest Pressure point into a rest position.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Clamps And Clips (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP94112672A 1993-10-15 1994-08-13 Höhenverstellung für Rückenlehnen von Stühlen Expired - Lifetime EP0648452B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335320 1993-10-15
DE4335320A DE4335320A1 (de) 1993-10-15 1993-10-15 Höhenverstellung für Rückenlehnen von Stühlen

Publications (3)

Publication Number Publication Date
EP0648452A2 EP0648452A2 (de) 1995-04-19
EP0648452A3 EP0648452A3 (de) 1995-12-27
EP0648452B1 true EP0648452B1 (de) 1998-03-18

Family

ID=6500315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112672A Expired - Lifetime EP0648452B1 (de) 1993-10-15 1994-08-13 Höhenverstellung für Rückenlehnen von Stühlen

Country Status (14)

Country Link
US (1) US5551754A (tr)
EP (1) EP0648452B1 (tr)
AT (1) ATE164047T1 (tr)
AU (1) AU665154B2 (tr)
CA (1) CA2118076C (tr)
DE (2) DE4335320A1 (tr)
DK (1) DK0648452T3 (tr)
ES (1) ES2117742T3 (tr)
FI (1) FI944813A (tr)
IL (1) IL111089A (tr)
NO (1) NO305971B1 (tr)
RU (1) RU2101994C1 (tr)
TR (1) TR28728A (tr)
ZA (1) ZA948057B (tr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600214U1 (de) * 1996-01-08 1996-02-29 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Klemmung für höhenverstellbare Rückenlehnen
US5921630A (en) * 1997-06-06 1999-07-13 Cassaday; Terrence Joseph Height adjustment mechanism for a back rest or an arm rest of a chair
US6010193A (en) * 1997-07-14 2000-01-04 Honda Giken Kogyo Kabushiki Kaisha Anti-rattle guide assembly for supporting an armrest or other structure moveable between extended and retracted positions
DE19731105C2 (de) * 1997-07-19 1999-12-16 Thomas Barth Rückenlehne
US6523895B1 (en) * 1999-02-05 2003-02-25 Davis Furniture Industries, Inc. Ergonomic chair
US6062647A (en) * 1999-07-08 2000-05-16 Mei; Teng-Fu Adjustable armrest assembly
US6354664B1 (en) * 2000-11-28 2002-03-12 Su-Ming Chen Height adjusting device for a chair
US7210742B2 (en) * 2005-03-22 2007-05-01 Yao-Chuan Wu Distance adjustment device for chair
CN2848623Y (zh) * 2005-09-28 2006-12-20 明门实业股份有限公司 可调整扶手高度的儿童汽车座椅
US9138061B1 (en) 2012-12-05 2015-09-22 Joel H. Eisenberg Seating
US9770111B2 (en) 2015-03-05 2017-09-26 A-Dec, Inc. Height adjusting mechanism and stool for dental practitioner
KR101698730B1 (ko) * 2016-11-01 2017-01-20 이명주 카시트용 발받침의 위치조절수단

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1336510A (en) * 1918-12-19 1920-04-13 Collier Keyworth Company Chair-iron
US3526430A (en) * 1968-11-18 1970-09-01 Art Metal Knoll Corp Back height adjustment mechanism
DE2218894A1 (de) * 1972-04-19 1973-10-31 Froescher Kg August Lehnenverstelleinrichtung, insbesondere fuer buerostuehle
SE404407B (sv) * 1977-12-14 1978-10-02 Kalmar Lens Landsting Losbar lasanordning for ror och axlar
JPS56145848A (en) * 1980-04-14 1981-11-12 Morita Mfg Apparatus for adjusting inclination of head rest of treating table
US4596484A (en) * 1984-10-05 1986-06-24 Velbon International Corporation Lock for telescoping tubular support
US4616877A (en) * 1985-05-09 1986-10-14 Kimball International, Inc. Chair with back height adjustment
US5035466A (en) * 1989-04-03 1991-07-30 Krueger International, Inc. Ergonomic chair
US5007678A (en) * 1989-10-11 1991-04-16 Steelcase Inc. Chair back height adjustment mechanism
DE3939321C2 (de) * 1989-11-28 1993-11-04 Kaltenbach & Voigt Stuhl mit hoehenverstellbarer rueckenlehne
US5232265A (en) * 1992-02-11 1993-08-03 Shepherd Products U.S., Inc. Vertical back adjust for chairs
US5382077A (en) * 1992-07-29 1995-01-17 Doerner Products Ltd. Height adjustment mechanism for a chair seat back

Also Published As

Publication number Publication date
RU2101994C1 (ru) 1998-01-20
DE4335320A1 (de) 1995-04-20
IL111089A0 (en) 1994-11-28
CA2118076A1 (en) 1995-04-16
US5551754A (en) 1996-09-03
NO943437D0 (no) 1994-09-15
AU665154B2 (en) 1995-12-14
DK0648452T3 (da) 1998-12-07
RU94036442A (ru) 1996-07-27
ZA948057B (en) 1995-06-09
ES2117742T3 (es) 1998-08-16
NO305971B1 (no) 1999-08-30
CA2118076C (en) 1999-11-16
TR28728A (tr) 1997-02-20
FI944813A0 (fi) 1994-10-13
FI944813A (fi) 1995-04-16
AU7427294A (en) 1995-06-22
EP0648452A2 (de) 1995-04-19
ATE164047T1 (de) 1998-04-15
IL111089A (en) 1998-06-15
NO943437L (no) 1995-04-18
DE59405465D1 (de) 1998-04-23
EP0648452A3 (de) 1995-12-27

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