EP0648452B1 - Höhenverstellung für Rückenlehnen von Stühlen - Google Patents
Höhenverstellung für Rückenlehnen von Stühlen Download PDFInfo
- 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
Links
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 229920001875 Ebonite Polymers 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
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)
Description
- Fig. 1
- eine Seitenansicht der Höhenverstellung in geöffneter Position;
- Fig. 2
- die Seitenansicht gemäß Fig. 1 in Klemmposition;
- Fig. 3
- eine Explosionsdarstellung der Höhenverstellung;
- Fig. 4
- eine Unteransicht des Hebels;
- Fig. 5
- eine Vorderansicht des Druckkörpers;
- Fig. 6
- eine Unteransicht eines Teils des Klemmkörpers.
Claims (8)
- Höhenverstellung für Rückenlehnen von Stühlen, insbesondere von Bürodrehstühlen,
wobei die Rückenlehne aus einer ggf. gepolsterten Rückenplatte (1) besteht, die mit einem Befestigungselement (3) verbunden ist, welches längsverschieblich auf einem Rückenlehnenträger (2) angeordnet ist, und wobei Feststellmittel zur gegenseitigen Verklemmung von Rückenlehnenträger (2) und Befestigungselement (3) vorhanden sind,
dadurch gekennzeichnet,daß das Feststellmittel aus einem Klemmkörper (4, 5) besteht, der auf der der Rückenplatte (1) entgegengesetzten Seite des Befestigungselements (3) angeordnet ist,daß der Klemmkörper (4, 5) mindestens eine Durchgangsbohrung oder mindestens einen durchgehenden Schlitz aufweist,daß mindestens ein Anker (7) an seinem einen Ende durch eine Bohrung oder einen Schlitz des Befestigungselements (3) hindurchgeführt und mit Hinterschneidungen (15) in diesem gehalten ist,daß der Anker (7) an seinem anderen Ende durch den Klemmkörper (4, 5) hindurchgeführt ist und mittels einer Bohrung und eines Bolzens (10) mit einem Hebel (8) verbunden ist,daß der Hebel (8) um den Bolzen (10) schwenkbar gelagert ist,
und daß der Hebel (8) einen Ansatz aufweist, der klemmend zwischen den Bolzen (10) und den Klemmkörper (4, 5) einschwenkbar ist, wodurch die auf den Anker (7) ausgeübte Zugkraft und der gleichzeitige Druck auf den Klemmkörper (4, 5) das Befestigungselement (3) und den Rückenlehnenträger (2) zueinander feststellt. - Höhenverstellung nach Anspruch 1,
dadurch gekennzeichnet,daß der Klemmkörper (4, 5) zwischen dem Befestigungselement (3) und dem Bolzen (10) höhenveränderlich ist. - Höhenverstellung nach Anspruch 2,
dadurch gekennzeichnet,daß der Klemmkörper (4, 5) aus zwei aneinanderliegenden und gegeneinander auf einer schrägen Fläche verschiebbaren Teilen besteht,
wobei zwischen Anschlägen (4') beider Teile mindestens eine Druckfeder (6) angeordnet ist, welche beide Teile entlang der Schräge auseinanderzudrücken strebt. - Höhenverstellung nach Anspruch 3,
dadurch gekennzeichnet,daß die aneinanderliegenden Teile des Klemmkörpers mit zueinander passenden Rastmitteln, wie Stufen oder Verzahnungen versehen sind. - Höhenverstellung nach Anspruch 2,
dadurch gekennzeichnet,daß der Klemmkörper ein elastisches Element aus Hartgummi oder einem Elastomer ist. - Höhenverstellung nach Anspruch 1,
dadurch gekennzeichnet,daß zwischen dem Ansatz (8'') des Hebels (8) und dem Klemmkörper (4, 5) ein Druckkörper (11) angeordnet ist. - Höhenverstellung nach Anspruch 6,
dadurch gekennzeichnet,daß der Druckkörper (11) an seiner einen Seite an seitlichen Zapfen (19) des Ansatzes (8'') des Hebels (8) schwenkbar gelagert ist und an seiner anderen Seite abgerundet ist und in einer Mulde des Klemmkörpers (4, 5) liegt,
wobei der Druckkörper (11) bei eingeschwenktem Ansatz (8'') über den höchsten Druckpunkt von Ansatz (8'') und Druckkörper (11) in eine klemmende Rastposition bringbar ist. - Höhenverstellung nach Anspruch 1,
dadurch gekennzeichnet,daß zwischen einem oberen Bereich des Rückenlehnenträgers (2) und einem unteren Bereich des Befestigungselements (3) wenigstens eine Zugfeder (23) eingesetzt ist.
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 (de) |
EP (1) | EP0648452B1 (de) |
AT (1) | ATE164047T1 (de) |
AU (1) | AU665154B2 (de) |
CA (1) | CA2118076C (de) |
DE (2) | DE4335320A1 (de) |
DK (1) | DK0648452T3 (de) |
ES (1) | ES2117742T3 (de) |
FI (1) | FI944813A (de) |
IL (1) | IL111089A (de) |
NO (1) | NO305971B1 (de) |
RU (1) | RU2101994C1 (de) |
TR (1) | TR28728A (de) |
ZA (1) | ZA948057B (de) |
Families Citing this family (12)
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)
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 |
-
1993
- 1993-10-15 DE DE4335320A patent/DE4335320A1/de not_active Ceased
-
1994
- 1994-08-13 DE DE59405465T patent/DE59405465D1/de not_active Expired - Fee Related
- 1994-08-13 EP EP94112672A patent/EP0648452B1/de not_active Expired - Lifetime
- 1994-08-13 AT AT94112672T patent/ATE164047T1/de not_active IP Right Cessation
- 1994-08-13 DK DK94112672T patent/DK0648452T3/da active
- 1994-08-13 ES ES94112672T patent/ES2117742T3/es not_active Expired - Lifetime
- 1994-09-15 NO NO943437A patent/NO305971B1/no not_active IP Right Cessation
- 1994-09-28 AU AU74272/94A patent/AU665154B2/en not_active Ceased
- 1994-09-29 IL IL111089A patent/IL111089A/en not_active IP Right Cessation
- 1994-10-07 RU RU94036442A patent/RU2101994C1/ru active
- 1994-10-13 CA CA002118076A patent/CA2118076C/en not_active Expired - Fee Related
- 1994-10-13 FI FI944813A patent/FI944813A/fi unknown
- 1994-10-13 TR TR01065/94A patent/TR28728A/xx unknown
- 1994-10-14 ZA ZA948057A patent/ZA948057B/xx unknown
- 1994-10-17 US US08/324,000 patent/US5551754A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
RU2101994C1 (ru) | 1998-01-20 |
FI944813A0 (fi) | 1994-10-13 |
US5551754A (en) | 1996-09-03 |
IL111089A (en) | 1998-06-15 |
TR28728A (tr) | 1997-02-20 |
AU7427294A (en) | 1995-06-22 |
ES2117742T3 (es) | 1998-08-16 |
EP0648452A2 (de) | 1995-04-19 |
NO943437D0 (no) | 1994-09-15 |
AU665154B2 (en) | 1995-12-14 |
ZA948057B (en) | 1995-06-09 |
FI944813A (fi) | 1995-04-16 |
NO305971B1 (no) | 1999-08-30 |
ATE164047T1 (de) | 1998-04-15 |
DE4335320A1 (de) | 1995-04-20 |
IL111089A0 (en) | 1994-11-28 |
DK0648452T3 (da) | 1998-12-07 |
CA2118076C (en) | 1999-11-16 |
EP0648452A3 (de) | 1995-12-27 |
DE59405465D1 (de) | 1998-04-23 |
RU94036442A (ru) | 1996-07-27 |
CA2118076A1 (en) | 1995-04-16 |
NO943437L (no) | 1995-04-18 |
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