CA1320118C - Pivot mounting for a chair - Google Patents
Pivot mounting for a chairInfo
- Publication number
- CA1320118C CA1320118C CA000570821A CA570821A CA1320118C CA 1320118 C CA1320118 C CA 1320118C CA 000570821 A CA000570821 A CA 000570821A CA 570821 A CA570821 A CA 570821A CA 1320118 C CA1320118 C CA 1320118C
- Authority
- CA
- Canada
- Prior art keywords
- chair
- mount
- bar
- pipe
- secured
- 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 - Fee Related
Links
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
Abstract
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 connect the two in relation to each other pivot-able 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.
(Fig. 2)
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 connect the two in relation to each other pivot-able 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.
(Fig. 2)
Description
- 1 ~3~ 8 The present invention is relate~ to a pivot mounting for a chair, especially an office chair.
Mountings of the above-mentiGned type are known, making it possible to pivot the seat an~ 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 pro-trudes 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 pre-tensioning 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 useO The mount, however, has a relatively large structural length, and a reliable mounting of the transverse arm to the spring bar is re~uired.
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 sup-port, as well as adjustment of same. The mount according to the invention, however, provides a 1~0118 - la -substantially shorter structure length and makes th~
transverse arm redundant.
The above-mentioned advantages according to the invention are achieved with the pivot mount for a chair, especially an office chair, comprising a spring bar arranged in a pipe in a direction transverse to th~
chair, where the spring bar with a tension connects the two in relation to each other pivotable parts of the moun-t, of which one is connected with the chair support and the other part is connected with the pivotable part of the chair, characteri~ed in that the one end of the bar is secured to one end of the pipe, and the pipe being secured to the second movable part, and the second end portion of the bar being bent in a reverse acute 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, the stop prefer-ably being adjustable.
The drawing discloses an embodiment o~ the pivot ;i. L~/ . , 52576 2 13~118 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, ho"ever, be ad~p~ed also to other desired purposes, such as chairs ~there the 5 seat as well as the back shall be pivotable.
In the drawlng, 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. l, and Fig. 3 discloses a view of the pivot mount as seen frorn left in Fig. l.
o The pivot mount according -to the invention comprises principally two in relation to each other turnable or pivot-able parts which are kept tensioned against each other b~
means of a spring device, the tension of which can be adjusted by the user. When the pivot mount is adapted to chairs where 5 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 whei-e only th~ back is pivclable, whereas the-seat is statio-2() nary and connected to the seat mount 2. Hereby also the seatmount 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 25 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 30 two side members 9 of the back mount l are secured to the pipe 5 on each side of the s~eeve 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 port-35 ion 3 is abutting against an adjustment screw 6 being connect-ed with the seat mount 2. By mounting and welding the dirfer-ent parts the end portion 3 of the spring bar is tensioned against the adjustment screw 6 with a desired force.
~3~118 As disclosed especially in Fig. 1, the back of th~
chair may be pivoted back-"ards whereby the back mount 1 i., pivoted clockwise on Fig. 1 against the force of the ~pring bar 4, the straight portion of the spring bar 4, "ithin hD
5 pipe 5, thereby acting as a torsion spriny, whereas the end 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 rnount 1 will be pressed ba-k to the neutral position of the spring bar 4.
Mountings of the above-mentiGned type are known, making it possible to pivot the seat an~ 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 pro-trudes 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 pre-tensioning 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 useO The mount, however, has a relatively large structural length, and a reliable mounting of the transverse arm to the spring bar is re~uired.
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 sup-port, as well as adjustment of same. The mount according to the invention, however, provides a 1~0118 - la -substantially shorter structure length and makes th~
transverse arm redundant.
The above-mentioned advantages according to the invention are achieved with the pivot mount for a chair, especially an office chair, comprising a spring bar arranged in a pipe in a direction transverse to th~
chair, where the spring bar with a tension connects the two in relation to each other pivotable parts of the moun-t, of which one is connected with the chair support and the other part is connected with the pivotable part of the chair, characteri~ed in that the one end of the bar is secured to one end of the pipe, and the pipe being secured to the second movable part, and the second end portion of the bar being bent in a reverse acute 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, the stop prefer-ably being adjustable.
The drawing discloses an embodiment o~ the pivot ;i. L~/ . , 52576 2 13~118 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, ho"ever, be ad~p~ed also to other desired purposes, such as chairs ~there the 5 seat as well as the back shall be pivotable.
In the drawlng, 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. l, and Fig. 3 discloses a view of the pivot mount as seen frorn left in Fig. l.
o The pivot mount according -to the invention comprises principally two in relation to each other turnable or pivot-able parts which are kept tensioned against each other b~
means of a spring device, the tension of which can be adjusted by the user. When the pivot mount is adapted to chairs where 5 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 whei-e only th~ back is pivclable, whereas the-seat is statio-2() nary and connected to the seat mount 2. Hereby also the seatmount 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 25 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 30 two side members 9 of the back mount l are secured to the pipe 5 on each side of the s~eeve 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 port-35 ion 3 is abutting against an adjustment screw 6 being connect-ed with the seat mount 2. By mounting and welding the dirfer-ent parts the end portion 3 of the spring bar is tensioned against the adjustment screw 6 with a desired force.
~3~118 As disclosed especially in Fig. 1, the back of th~
chair may be pivoted back-"ards whereby the back mount 1 i., pivoted clockwise on Fig. 1 against the force of the ~pring bar 4, the straight portion of the spring bar 4, "ithin hD
5 pipe 5, thereby acting as a torsion spriny, whereas the end 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 rnount 1 will be pressed ba-k 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 that the one end of the bar is secured to one end of the pipe, and the pipe being secured to the second moveable part, and the second end portion of the bar being bent in a reverse acute 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, the stop preferably being adjustable.
2. Mount according to claim 1, charac-terized in that the second part is a seat mount, the first part being a mount for the chair back, and the second part is secured to the chair support.
3. Mount according to claim 1, charac-terized in that the second part is connected with the seat and back and the first part is secured to the chair support whereby 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. |
| NO872,794 | 1987-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1320118C true CA1320118C (en) | 1993-07-13 |
Family
ID=19890070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000570821A Expired - Fee Related CA1320118C (en) | 1987-07-03 | 1988-06-30 | 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 |
Family Cites Families (4)
| 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 |
| 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 JP JP63165785A patent/JPH01164308A/en active Pending
- 1988-07-01 EP EP88850239A patent/EP0298068A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0298068A1 (en) | 1989-01-04 |
| JPH01164308A (en) | 1989-06-28 |
| FI883123A0 (en) | 1988-06-30 |
| FI883123A (en) | 1989-01-04 |
| NO872794L (en) | 1989-01-04 |
| NO872794D0 (en) | 1987-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |