EP0298068A1 - Pivot mounting for a chair - Google Patents
Pivot mounting for a chair Download PDFInfo
- Publication number
- EP0298068A1 EP0298068A1 EP88850239A EP88850239A EP0298068A1 EP 0298068 A1 EP0298068 A1 EP 0298068A1 EP 88850239 A EP88850239 A EP 88850239A EP 88850239 A EP88850239 A EP 88850239A EP 0298068 A1 EP0298068 A1 EP 0298068A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chair
- mount
- bar
- pipe
- seat
- 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.)
- Withdrawn
Links
- 206010043268 Tension Diseases 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003466 welding Methods 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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
-
- 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
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity
-
- 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
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
Definitions
- the present invention is related to a pivot mounting for a chair, especially an office chair, according to the preamble of the claims.
- a torsion spring in the shape of a spring bar is arranged horizontally and secured at one end to a pipe of which both ends are mounted turnable in sleeves secured to the chair mount for the seat.
- the other end of the spring bar protrudes through the pipe and is secured to the seat mount by a transverse arm on the spring bar.
- the end of the transverse arm can be adjusted by means of a spindle against the seat mount to achieve desired pretensioning of the spring bar.
- an arm is secured to the pipe and to a mount for the chair support as well. In this manner the seat and the back of the chair can be pressed by the user against the force of the spring bar by twisting of the bar and the return force of the spring bar may be adjusted by means of the transverse arm.
- the pivot mount according to the present invention provides the advantages of the above mentioned mount with respect to the spring force between the seat mount and the mount for the chair support, as well as adjustment of same.
- the mount according to the invention provides a substantially shorter structure length and makes the transverse arm redundant.
- the drawing discloses an embodiment of the pivot mount according to the invention, adapted to an office chair where the seat is stationary and only the back can be pivoted.
- the mount according to the invention may, however, be adapted also to other desired purposes, such as chairs where the seat as well as the back shall be pivotable.
- Fig. 1 discloses a side view of the pivot mount according to the invention
- Fig. 2 discloses a top view of the mount in Fig. 1
- Fig. 3 discloses a view of the pivot mount as seen from left in Fig. 1.
- the pivot mount according to the invention comprises principally two in relation to each other turnable or pivotable parts which are kept tensioned against each other by means of a spring device, the tension of which can be adjusted by the user.
- the pivot mount is adapted to chairs where the seat and the back shall be pivotable together, these are connected with one part, whereby the chair support is connected with the other part.
- a sleeve 7 is welded to the seat mount 2. Through the sleeve is arranged a pipe 5 through which a spring bar 4 is protruding. The spring bar 4 is kept centric at one end of the pipe 5 by means of a plug 8 and is connected with the pipe 5 at the other end.
- the pipe 5 is turnable mounted in the sleeve 7.
- the two side members 9 of the back mount 1 are secured to the pipe 5 on each side of the sleeve 7.
- the spring bar 4 preferably has a square shape and its end portion 3 is bent in an angle in relation to the remaining portion of the spring bar.
- the end of the end portion 3 is abutting against an adjustment screw 6 being connected with the seat mount 2.
- the back of the chair may be pivoted backwards whereby the back mount 1 is pivoted clockwise on Fig. 1 against the force of the spring bar 4, the straight portion of the spring bar 4, within the pipe 5, thereby acting as a torsion spring, whereas the end portion 3 provides an additional resilient effect, due to the material of the spring bar.
- the back mount 1 will be pressed back to the neutral position of the spring bar 4.
Abstract
Pivot mount for a chair, especially an office chair comprising a spring bar arranged in a pipe in a direction transverse to the chair, where the spring bar with a tension connects the two in relation to each other pivotable parts of the mount, of which one is connected with the chair support and the other part is connected with the pivotable part of the chair, where one end of bar (4) being secured to one end of the pipe (5), the pipe being secured to the second moveable part (2), and the second end portion (3) of the bar (4) being bent in an angle in relation to the remaining part of the bar, the end of which with tension is abutting against a stop connected with the second part (2), the stop preferably being adjustable.
Description
- The present invention is related to a pivot mounting for a chair, especially an office chair, according to the preamble of the claims.
- Mountings of the above mentioned type are known, making it possible to pivot the seat and the back of the chair in relation to the chair support in an acute angle backwards against the force of a spring which is adapted to return the seat and the back to the neutral position.
- In a known embodiment a torsion spring in the shape of a spring bar is arranged horizontally and secured at one end to a pipe of which both ends are mounted turnable in sleeves secured to the chair mount for the seat. The other end of the spring bar protrudes through the pipe and is secured to the seat mount by a transverse arm on the spring bar. The end of the transverse arm can be adjusted by means of a spindle against the seat mount to achieve desired pretensioning of the spring bar. Between the two sleeves an arm is secured to the pipe and to a mount for the chair support as well. In this manner the seat and the back of the chair can be pressed by the user against the force of the spring bar by twisting of the bar and the return force of the spring bar may be adjusted by means of the transverse arm.
- The above mentioned design of a pivot mount for a chair in many respects has proved suitability and also is commonly in use. The mount, however, has a relatively large structural length and a reliable mounting of the transverse arm to the spring bar is required.
- The pivot mount according to the present invention provides the advantages of the above mentioned mount with respect to the spring force between the seat mount and the mount for the chair support, as well as adjustment of same. The mount according to the invention, however, provides a substantially shorter structure length and makes the transverse arm redundant.
- The above mentioned advantages are achieved with the pivot mount according to the invention as described by the features in the characterizing clauses of the claims.
- The drawing discloses an embodiment of the pivot mount according to the invention, adapted to an office chair where the seat is stationary and only the back can be pivoted. The mount according to the invention may, however, be adapted also to other desired purposes, such as chairs where the seat as well as the back shall be pivotable.
- In the drawing, Fig. 1 discloses a side view of the pivot mount according to the invention, Fig. 2 discloses a top view of the mount in Fig. 1, and Fig. 3 discloses a view of the pivot mount as seen from left in Fig. 1.
- The pivot mount according to the invention comprises principally two in relation to each other turnable or pivotable parts which are kept tensioned against each other by means of a spring device, the tension of which can be adjusted by the user. When the pivot mount is adapted to chairs where the seat and the back shall be pivotable together, these are connected with one part, whereby the chair support is connected with the other part.
- In the drawing, however, an embodiment is disclosed where only the back is pivotable, whereas the seat is stationary and connected to the
seat mount 2. Hereby also the seat mount in this embodiment is connected with the chair support, whereas the pivotable back is connected with the back mount 1. - A sleeve 7 is welded to the
seat mount 2. Through the sleeve is arranged apipe 5 through which a spring bar 4 is protruding. The spring bar 4 is kept centric at one end of thepipe 5 by means of a plug 8 and is connected with thepipe 5 at the other end. - The
pipe 5 is turnable mounted in the sleeve 7. The two side members 9 of the back mount 1 are secured to thepipe 5 on each side of the sleeve 7. - The spring bar 4 preferably has a square shape and its
end portion 3 is bent in an angle in relation to the remaining portion of the spring bar. The end of theend portion 3 is abutting against an adjustment screw 6 being connected with theseat mount 2. By mounting and welding the different parts theend portion 3 of the spring bar is tensioned against the adjustment screw 6 with a desired force. - As disclosed especially in Fig. 1, the back of the chair may be pivoted backwards whereby the back mount 1 is pivoted clockwise on Fig. 1 against the force of the spring bar 4, the straight portion of the spring bar 4, within the
pipe 5, thereby acting as a torsion spring, whereas theend portion 3 provides an additional resilient effect, due to the material of the spring bar. When the force against the back comes to an end, the back mount 1 will be pressed back to the neutral position of the spring bar 4.
Claims (3)
1. Pivot mount for a chair, especially an office chair comprising a spring bar arranged in a pipe in a direction transverse to the chair, where the spring bar with a tension connects the two in relation to each other pivotable parts of the mount, of which one is connected with the chair support and the other part is connected with the pivotable part of the chair, CHARACTERIZED IN the one end of the bar (4) being secured to one end of the pipe (5), the pipe being secured to the second moveable part (2), and the second end portion (3) of the bar (4) being bent in an angle in relation to the remaining part of the bar, the end of which with tension is abutting against a stop connected with the second part (2), the stop preferably being adjustable.
2. Mount according to claim 1, CHARACTERIZED IN the second part (2) being a seat mount, the first part being a mount for the chair back, and the second part being secured to the chair support.
3. Mount according to claim 1, CHARACTERIZED in the second part (2) being connected with the chair seat and back and the first part (1) being secured to the chair support in such a way that the seat and the back of the chair can pivot together.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO87872794A NO872794L (en) | 1987-07-03 | 1987-07-03 | VIP FITTING FOR A CHAIR, ISAER OFFICE CHAIR. |
NO872794 | 1987-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0298068A1 true EP0298068A1 (en) | 1989-01-04 |
Family
ID=19890070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88850239A Withdrawn EP0298068A1 (en) | 1987-07-03 | 1988-07-01 | Pivot mounting for a chair |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0298068A1 (en) |
JP (1) | JPH01164308A (en) |
CA (1) | CA1320118C (en) |
FI (1) | FI883123A (en) |
NO (1) | NO872794L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO176864C (en) * | 1991-05-15 | 1995-06-14 | Ring Mekanikk As | Chair fittings for spring-mounted tilt fittings between a chair's seat and swivel column |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027191A (en) * | 1960-04-11 | 1962-03-27 | Lie Finn | Chair construction |
DE2409823A1 (en) * | 1974-03-01 | 1975-09-04 | Kloeber Kg Spezialfabrik Fuer | Resilient bearing for seats mounted on tubular legs - includes eccentricities and stops allowing restricted forward and backward movement |
FR2280297A7 (en) * | 1974-07-22 | 1976-02-20 | Slawinski Jean Francois | Support frame for tilt back chair - has torsion bar between upper and lower parts and stops |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5647197Y2 (en) * | 1977-06-23 | 1981-11-05 |
-
1987
- 1987-07-03 NO NO87872794A patent/NO872794L/en unknown
-
1988
- 1988-06-30 FI FI883123A patent/FI883123A/en not_active Application Discontinuation
- 1988-06-30 CA CA000570821A patent/CA1320118C/en not_active Expired - Fee Related
- 1988-07-01 EP EP88850239A patent/EP0298068A1/en not_active Withdrawn
- 1988-07-01 JP JP63165785A patent/JPH01164308A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027191A (en) * | 1960-04-11 | 1962-03-27 | Lie Finn | Chair construction |
DE2409823A1 (en) * | 1974-03-01 | 1975-09-04 | Kloeber Kg Spezialfabrik Fuer | Resilient bearing for seats mounted on tubular legs - includes eccentricities and stops allowing restricted forward and backward movement |
FR2280297A7 (en) * | 1974-07-22 | 1976-02-20 | Slawinski Jean Francois | Support frame for tilt back chair - has torsion bar between upper and lower parts and stops |
Also Published As
Publication number | Publication date |
---|---|
FI883123A (en) | 1989-01-04 |
NO872794L (en) | 1989-01-04 |
JPH01164308A (en) | 1989-06-28 |
FI883123A0 (en) | 1988-06-30 |
NO872794D0 (en) | 1987-07-03 |
CA1320118C (en) | 1993-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19890116 |
|
17Q | First examination report despatched |
Effective date: 19900105 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19920430 |