WO1997024958A1 - Höhenverstellung für rückenlehnen - Google Patents
Höhenverstellung für rückenlehnen Download PDFInfo
- Publication number
- WO1997024958A1 WO1997024958A1 PCT/DE1996/002350 DE9602350W WO9724958A1 WO 1997024958 A1 WO1997024958 A1 WO 1997024958A1 DE 9602350 W DE9602350 W DE 9602350W WO 9724958 A1 WO9724958 A1 WO 9724958A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- backrest support
- housing
- height adjustment
- spring
- backrests
- Prior art date
Links
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 with the features of the preamble of claim 1.
- Chairs in particular office chairs, consisting of a housing in which a flat backrest support is held by a ball locking clamp, the backrest support being provided with recesses or openings for locking balls arranged one behind the other in the axial direction, which are held in the recesses or openings by means of a spring-loaded clamping bevel and the clamping bevel can be disengaged against the spring force by a button which is guided laterally out of the housing, is known for example from EP-A-0 264 555.
- the object of the present invention is to provide a height adjustment of the type mentioned, which is extremely easy to use and has a safe function.
- the means for preventing lateral play of the backrest support are two wedges lying against one another with their bevels, the parallel outer sides of which rest on the housing wall on the one hand and on one side of the backrest support on the other and the wedge on the housing wall at its wider end is loaded by a spring.
- the loaded wedge presses with its bevel on the bevel of the wedge resting on the backrest support, so that a force acts laterally on the backrest support and brings it to bear against the housing or a part connected to it.
- the backrest support can slide without play.
- a base plate is fastened in the housing, in which the other side of the backrest support is guided and which supports the spring for the wedge resting on the housing wall.
- the base plate has guide means, such as grooves, for guide parts, for example pins, of the wedge resting on the backrest support.
- a further recess or an opening is arranged at the lower end and above this recess or this
- Breakthrough is a resiliently loaded locking means for snapping into the further recess or the further opening.
- the latching means is preferably a latching arm which snaps upwards when the backrest support is pulled, but when it is pushed in, however 24958 PC17DE96 / 02350
- This locking arm can be pivotally mounted in the base plate, for example.
- FIG. 1 is a plan view when the upper housing part is omitted
- FIG. 2 is a section along the line A - A
- FIG. 3 is a section along the line B - B of FIG. 1 ; 4a to 6c individual parts from FIG. 1.
- the height adjustment according to FIGS. 1 to 6c consists of a flat housing 1 with an essentially rectangular cross section, in which a flat backrest support 2 is slidably guided and clampable.
- the housing can be extended at the bottom and connected to a seat support. It can also have other dimensions than shown and curved.
- the backrest support 2 has a series of bores 3 along its central axis, which define the respective insertion depth.
- a locking ball 4 is seated in one of these bores 3 and is pressed into the bore by a clamping bevel 5 'of a boat 5.
- the pressing pressure results from a spring 6, which is supported in a base plate 7, which is fastened in the housing 1, for example by screws 17 or locking lugs.
- the base plate 7 also has a groove 16 in which the shuttle 5 can slide and find a stop on the side opposite the spring 6.
- buttons 8 On this side of the shuttle 5 is a button 8 with which it acts against the force of the spring 6 can be pushed back, whereupon the small slope 5 'releases the ball 4 and the backrest can be moved until the desired insertion depth is reached and the button 8 is released again.
- the button 8 has a flat recess 8 'into which a small spring 9 engages during assembly, so that the button 8 can no longer be pulled out. This measure prevents the unintentional release of the button 8 and offers the possibility of using differently designed buttons in the same height adjustment. Since the base plate 7 is preferably made of plastic, a metal disc 21 is embedded in the area in which the ball 4 presses against the small slope 5 'in order to ensure permanent functioning.
- the base plate 7 extends from the side of the button 8 over the large part of the base surface of the housing 1 and has a running surface and a stop edge for the backrest support 2.
- the backrest support 2 rests on a step 11 'of the straight side of a wedge 11, which lies with its bevel 11''on the bevel 10''of a second wedge 10, which in turn rests with its straight side on the inner wall of the housing .
- the second wedge 10 is acted upon at its broad end by a compression spring 12 which is supported in a projection 13 of the base plate.
- the spring 12 presses the wedge 10 upward in the illustration of FIG.
- the base plate 7 has grooves 15 which are open towards the first wedge 11 and which receive guide pins 14 in a sliding manner (FIGS. 4c and 4e). This wedge 11 is guided and cannot evade.
- the height adjustment is provided with a pull-out protection which is shown offset in FIGS. 1 and 3. This pull-out protection has a bore 22, which is actually supposed to lie next to the last bore 3 for the locking ball, or in FIG. 1, even below it.
- a pivotable locking arm 19 is arranged in a recess 18 of the base plate 7, which is acted upon by a spring 20 supported in the base plate 7 such that its locking lug 19 '- as shown in Fig. 3, pressed into the bore 22 as soon as the backrest is pulled out far enough. The backrest is then blocked. The insertion is not hindered by the locking arm 19, since it has a run-off slope in this direction.
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Toilet Supplies (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/913,114 US5882077A (en) | 1996-01-10 | 1996-12-07 | Height adjustment of back rests |
EP96946053A EP0813378B1 (de) | 1996-01-10 | 1996-12-07 | Höhenverstellung für rückenlehnen |
DE59606803T DE59606803D1 (de) | 1996-01-10 | 1996-12-07 | Höhenverstellung für rückenlehnen |
NO974049A NO974049L (no) | 1996-01-10 | 1997-09-03 | Höyderegulering for stolrygger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29600332.8 | 1996-01-10 | ||
DE29600332U DE29600332U1 (de) | 1996-01-10 | 1996-01-10 | Höhenverstellung für Rückenlehnen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997024958A1 true WO1997024958A1 (de) | 1997-07-17 |
Family
ID=8017850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1996/002350 WO1997024958A1 (de) | 1996-01-10 | 1996-12-07 | Höhenverstellung für rückenlehnen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5882077A (de) |
EP (1) | EP0813378B1 (de) |
DE (2) | DE29600332U1 (de) |
NO (1) | NO974049L (de) |
WO (1) | WO1997024958A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU715954B2 (en) * | 1996-10-15 | 2000-02-10 | Workspace Commercial Furniture Pty Ltd | Latch mechanism to control height adjustment of various seat components |
US6209963B1 (en) * | 1999-05-06 | 2001-04-03 | Miotto International, Inc. | Variable configuration mounting arrangement for a chair back support member |
US6609686B2 (en) * | 2002-01-18 | 2003-08-26 | Tam Srl | Adjustable support apparatus |
CN2736477Y (zh) * | 2004-09-30 | 2005-10-26 | 马准安 | 一种篷结构 |
US7264312B1 (en) * | 2006-05-17 | 2007-09-04 | Chih Chiang Wang | Backrest adjusting mechanism |
US8251078B2 (en) * | 2009-04-28 | 2012-08-28 | Oliver Joen-An Ma | Umbrella handle |
PL2759230T3 (pl) | 2013-01-23 | 2016-04-29 | L & P Property Management Co | Krzesło i mechanizm regulacji wysokości oparcia krzesła |
US9770111B2 (en) | 2015-03-05 | 2017-09-26 | A-Dec, Inc. | Height adjusting mechanism and stool for dental practitioner |
CN207666140U (zh) | 2016-10-25 | 2018-07-31 | 宁波万汇休闲用品有限公司 | 伞形结构组件装配装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0210584A2 (de) * | 1985-08-02 | 1987-02-04 | August Fröscher GmbH & Co. K.G. | Verstelleinrichtung für die stufenweise arretierbare Höhenverstellung von Rückenlehnen an Arbeitsstühlen |
EP0264555A2 (de) * | 1986-10-16 | 1988-04-27 | Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. | Stuhl, insbesondere Bürostuhl, mit höhenverstellbarer Rückenlehne |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1075323A (en) * | 1912-05-24 | 1913-10-14 | Israel Benjamins | Adjustable stand. |
US1101552A (en) * | 1913-07-03 | 1914-06-30 | Walter E Hume | Support for dress-forms and the like. |
DE1753671B1 (de) * | 1965-11-12 | 1971-08-26 | Boehler Nachf Wilhelm Boehler | Sessel mit verstellbarer sitzflaeche und oder rueckenlehne |
DE9310220U1 (de) * | 1993-07-09 | 1994-08-04 | Froli Kunststoffe Heinrich Fromme, 33758 Schloß Holte-Stukenbrock | Schiebeführung |
-
1996
- 1996-01-10 DE DE29600332U patent/DE29600332U1/de not_active Expired - Lifetime
- 1996-12-07 DE DE59606803T patent/DE59606803D1/de not_active Expired - Fee Related
- 1996-12-07 EP EP96946053A patent/EP0813378B1/de not_active Expired - Lifetime
- 1996-12-07 US US08/913,114 patent/US5882077A/en not_active Expired - Fee Related
- 1996-12-07 WO PCT/DE1996/002350 patent/WO1997024958A1/de active IP Right Grant
-
1997
- 1997-09-03 NO NO974049A patent/NO974049L/no not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0210584A2 (de) * | 1985-08-02 | 1987-02-04 | August Fröscher GmbH & Co. K.G. | Verstelleinrichtung für die stufenweise arretierbare Höhenverstellung von Rückenlehnen an Arbeitsstühlen |
EP0264555A2 (de) * | 1986-10-16 | 1988-04-27 | Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. | Stuhl, insbesondere Bürostuhl, mit höhenverstellbarer Rückenlehne |
Also Published As
Publication number | Publication date |
---|---|
DE29600332U1 (de) | 1996-03-07 |
NO974049D0 (no) | 1997-09-03 |
EP0813378A1 (de) | 1997-12-29 |
DE59606803D1 (de) | 2001-05-23 |
NO974049L (no) | 1997-09-03 |
US5882077A (en) | 1999-03-16 |
EP0813378B1 (de) | 2001-04-18 |
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