EP0759714B1 - Chair with adjustable back - Google Patents
Chair with adjustable back Download PDFInfo
- 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
Links
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 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)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9501032A SE510058C2 (sv) | 1995-03-22 | 1995-03-22 | Rygginställningsanordning vid en stol |
SE9501032 | 1995-03-22 | ||
PCT/SE1996/000369 WO1996028996A1 (en) | 1995-03-22 | 1996-03-22 | Chair with adjustable back |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0759714A1 EP0759714A1 (en) | 1997-03-05 |
EP0759714B1 true EP0759714B1 (en) | 2000-01-26 |
Family
ID=20397645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96907853A Expired - Lifetime EP0759714B1 (en) | 1995-03-22 | 1996-03-22 | Chair with adjustable back |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0759714B1 (da) |
DE (1) | DE69606363T2 (da) |
DK (1) | DK0759714T3 (da) |
NO (1) | NO311121B1 (da) |
SE (1) | SE510058C2 (da) |
WO (1) | WO1996028996A1 (da) |
Cited By (1)
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)
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)
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)
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 |
-
1995
- 1995-03-22 SE SE9501032A patent/SE510058C2/sv not_active IP Right Cessation
-
1996
- 1996-03-22 EP EP96907853A patent/EP0759714B1/en not_active Expired - Lifetime
- 1996-03-22 DE DE69606363T patent/DE69606363T2/de not_active Expired - Lifetime
- 1996-03-22 DK DK96907853T patent/DK0759714T3/da active
- 1996-03-22 WO PCT/SE1996/000369 patent/WO1996028996A1/en active IP Right Grant
- 1996-11-21 NO NO19964961A patent/NO311121B1/no not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE374511C (de) * | 1923-04-24 | Edvard Kristian Melihn | Radiatorglied aus zwei ineinanderliegenden Roehren |
Cited By (1)
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 |
---|---|
EP0759714A1 (en) | 1997-03-05 |
DE69606363D1 (de) | 2000-03-02 |
NO964961D0 (no) | 1996-11-21 |
SE9501032D0 (sv) | 1995-03-22 |
DK0759714T3 (da) | 2000-07-24 |
WO1996028996A1 (en) | 1996-09-26 |
NO964961L (no) | 1996-11-21 |
SE9501032L (sv) | 1996-09-23 |
NO311121B1 (no) | 2001-10-15 |
DE69606363T2 (de) | 2000-08-10 |
SE510058C2 (sv) | 1999-04-12 |
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