EP0759714B1 - Stuhl mit verstellbarer rückenlehne - Google Patents

Stuhl mit verstellbarer rückenlehne Download PDF

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Publication number
EP0759714B1
EP0759714B1 EP96907853A EP96907853A EP0759714B1 EP 0759714 B1 EP0759714 B1 EP 0759714B1 EP 96907853 A EP96907853 A EP 96907853A EP 96907853 A EP96907853 A EP 96907853A EP 0759714 B1 EP0759714 B1 EP 0759714B1
Authority
EP
European Patent Office
Prior art keywords
tongue
section
hollow
slits
aid
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
EP96907853A
Other languages
English (en)
French (fr)
Other versions
EP0759714A1 (de
Inventor
Stephan Du Rees
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.)
Mercado Medic AB
Original Assignee
Mercado Medic AB
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 Mercado Medic AB filed Critical Mercado Medic AB
Publication of EP0759714A1 publication Critical patent/EP0759714A1/de
Application granted granted Critical
Publication of EP0759714B1 publication Critical patent/EP0759714B1/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 present invention relates to a back support height adjustment device for chairs, and includes a pillar upwardly directed from the seat or its substructure for carrying a back support, which is adjustable in relation to the seat, the pillar comprising at least two sections, which are mutually, telescopically displaceable, such a device is known from US-A-3 434 756.
  • Implementations usually available at present for adjusting the height of pillars carrying a back support can be either complicated or simple structures.
  • the complicated kind is expensive to produce and the simple kind, which is cheap to produce, has, inter alia, the drawback that ugly clamping marks are caused on the means forming the pillar, these means being mutually displaceable for enabling different height settings for the back support.
  • Another drawback with the simple structures is that when adjustment takes place, it happens quite often at greater heights that the part of the pillar means to which the support is attached is pulled out from the part with which it telescopes, causing it to fall on the floor together with the support.
  • the object of the present invention is to provide a back support adjustment device of the kind mentioned above, which answers its purpose excellently, while being both simple and cheap in manufacture at the same time.
  • the locking mechanism used to positionally fix the telescoping hollow sections in given mutual relationship, has an implementation making it impossible to form any ugly clamping marks on the sections.
  • the two sections forming the pillar means cannot slide apart into separate relationship. This situation is prevented by a locking pin, which keeps both sections together until released by a simple thumb-grip in case the chair is to be dismantled, e.g. for transport and/or packing.
  • a preferred embodiment example of the invention comprises a back support adjustment device 1 for a chair, including a pillar 2 upwardly directed from the seat or its substructure, for carrying a back support 3.
  • the pillar 2 comprises at least two hollow sections 4, 5, which are mutually, telescopically displaceable, and in the present example they have rectangular cross-sections. Since the hollow sections 4, 5 can move inside the section (5), a desired back support height can be achieved by pushing the former into, or withdrawing it from the latter, and since the pillar 2 is provided with a locking mechanism 23 actuatable by a screw 9 via a thumb-wheel 24, the sections 4, 5 are readily, positionally fixable at a desired setting position.
  • the actual positional fixation of the sections 4, 5 to each other is achieved with the aid of at least one tongue 6 formed in, and integral with, a wall of the outer hollow section 5 at a face 7 thereof.
  • This tongue is intended to lock the two sections 4, 5 together by friction caused by applying a compressive force to it, which is achieved by operating the thumb-wheel 24 with its attached screw 9.
  • the screw 9, providing compressive force against the tongue 6, coacts via a thread 10 with a thread 11 in a yoke 8 surrounding the tongue 6 and fastened to the outer section 5.
  • the free end 12 of the screw is adapted to press against a centrally situated portion 13 of the tongue 6, the free end of which is flush with the free end 14 of the section 5, where the section 4 may be inserted.
  • the tongue is laterally delimited by two slits 15, 16 in spaced relationship and departing from the free upper end 14 of sections 5 and in its longitudinal direction.
  • the width of the tongue 6 substantially corresponds to the width of the face 7' of section 4, against which face it engages.
  • slits 15, 16 delimiting the tongue 6 extend mutually parallel to terminate a distance from the free end 14 of section 5 substantially corresponding to its width. In the region 18 where the slits terminate there is a hole 17 between them, providing greater flexibility to the tongue 6 at its junction with the wall of section 5.
  • the hole 17 also has the task of accommodating a locking pin 19, which is spring-biassed away from section 4, such as to prevent, by coacting with the upper edge 20 of the hole, that sections 4 and 5 are unintentionally pulled apart. Pushing the sections together is, however, always possible, since the downward edge portion 21 of the hole is curved away, or oterhwise rounded, at 22 so as to allow automatic depression of the pin into the inner section 4.
  • the pin 19 projecting into the hole 17 can be depressed by the thumb, so that the pin glides under the upper edge 20 of the hole 17, which allows the sections 4 and 5 to be pulled apart.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (5)

  1. Rückenstütze-Einstellvorrichtung für Stühle, die einen Ständer (2) aufweist, der von dem Sitz oder seinem Unterbau nach oben ausgerichtet ist, um eine Rückenstütze (3) zu tragen, wobei der Ständer (2) wenigstens zwei hohle Profile (4,5) auweist, die wechselseitig teleskopartig verschiebbar und in einer gewünschten Höhe wechselseitig positionsmäßig fixierbar sind mittels wenigstens einer Zunge (6), die in einer Wand des äußeren hohlen Profils (5) an einer Stirnseite (7) davon ausgebildet und mit dieser einstückig ist, wobei die Zunge auch seitlich begrenzt ist durch zwei Schlitze (15,16), die voneinander beabstandet sind und von dem freien oberen Ende (14) dieses hohlen Profils ausgehen, so daß so die Zunge in der Lage ist, mit Unterstützung einer senkrecht zu ihr ausgerichteten Druckkraft das andere hohle Profil (4) gegen das eine (5) mit der Unterstützung der Reibung zwischen der Zunge und der Wandfläche (7') des hohlen Profils (4) zu verriegeln, ohne daß irgendwelche Klemmarkierungen an der Oberfläche dieses Profils (4) zurückbleiben, gegen welches die Kraft ausgeübt wird, und wobei die Zunge (6) in einem Bereich (18) an dem Ende der Schlitze (15,16) ein Loch (17) zwischen diesen Schlitzen aufweist für eine Erhöhung der Flexibilität dieser Zunge, wo sie in die Stirnseite (7) dieses äußeren hohlen Profils (5) integriert ist, wobei das Loch (17) auch für die Aufnahme eines Verriegelungsstiftes (19) genutzt wird, der durch eine Feder weg von diesem Profil (4) vorgespannt ist und nach innen gedrückt werden kann, damit die hohlen Profile (4,5) voneinander getrennt werden können.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckkraft durch eine Verriegelungsschraube (9) bewirkt wird, die gegen die Zunge mittels eines Jochs (8) gedrückt werden kann, welches an dem äußeren Profil (5) befestigt ist und die Zunge (6) umgibt.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Schrauben (9) mit einem Gewinde (10) versehen ist, das mit einem korrespondierenden Gewinde (11) in dem Joch (8) zusammenwirkt, wobei das freie Ende (12) der Schraube (9) angeordnet ist für ein Drücken gegen einen zentral angeordneten Bereich (13) der Zunge (6).
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die hohlen Profile (4,5) einen rechteckigen Querschnitt haben und daß die Zunge (6) an dem äußeren Profil (5) eine Breite hat, die im wesentlichen der Breite des inneren Profils (4) entspricht.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schlitze (15, 16), welche die Zunge (6) begrenzen, wechselseitig parallel verlaufen und in einem Abstand von der freien Kante des äußeren Profils (5) enden, der im wesentlichen der Breite dieses Profils entspricht.
EP96907853A 1995-03-22 1996-03-22 Stuhl mit verstellbarer rückenlehne Expired - Lifetime EP0759714B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9501032 1995-03-22
SE9501032A SE510058C2 (sv) 1995-03-22 1995-03-22 Rygginställningsanordning vid en stol
PCT/SE1996/000369 WO1996028996A1 (en) 1995-03-22 1996-03-22 Chair with adjustable back

Publications (2)

Publication Number Publication Date
EP0759714A1 EP0759714A1 (de) 1997-03-05
EP0759714B1 true EP0759714B1 (de) 2000-01-26

Family

ID=20397645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907853A Expired - Lifetime EP0759714B1 (de) 1995-03-22 1996-03-22 Stuhl mit verstellbarer rückenlehne

Country Status (6)

Country Link
EP (1) EP0759714B1 (de)
DE (1) DE69606363T2 (de)
DK (1) DK0759714T3 (de)
NO (1) NO311121B1 (de)
SE (1) SE510058C2 (de)
WO (1) WO1996028996A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9096151B2 (en) 2011-05-27 2015-08-04 Husqvarna Ab Lawn care vehicle adjustable seat

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11945551B2 (en) * 2022-01-27 2024-04-02 Fujian Doofar Outdoor Sporting Goods Co., Ltd. Backrest adjustment structure for boat seat

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE374511C (de) * 1923-04-24 Edvard Kristian Melihn Radiatorglied aus zwei ineinanderliegenden Roehren

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982586A (en) * 1959-08-07 1961-05-02 Francis J Gliebe Fishing net construction
US3434756A (en) * 1967-04-17 1969-03-25 Cramer Ind Inc Chair with adjustable back and arm rests
US3501182A (en) * 1968-07-12 1970-03-17 Frank Buchsbaum Gear hub clamp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE374511C (de) * 1923-04-24 Edvard Kristian Melihn Radiatorglied aus zwei ineinanderliegenden Roehren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9096151B2 (en) 2011-05-27 2015-08-04 Husqvarna Ab Lawn care vehicle adjustable seat

Also Published As

Publication number Publication date
NO311121B1 (no) 2001-10-15
DK0759714T3 (da) 2000-07-24
WO1996028996A1 (en) 1996-09-26
DE69606363D1 (de) 2000-03-02
SE510058C2 (sv) 1999-04-12
SE9501032D0 (sv) 1995-03-22
NO964961L (no) 1996-11-21
EP0759714A1 (de) 1997-03-05
NO964961D0 (no) 1996-11-21
DE69606363T2 (de) 2000-08-10
SE9501032L (sv) 1996-09-23

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