WO2000057753A1 - A chair with an elastic, counter-reacting, reclining seat back - Google Patents

A chair with an elastic, counter-reacting, reclining seat back Download PDF

Info

Publication number
WO2000057753A1
WO2000057753A1 PCT/IT2000/000093 IT0000093W WO0057753A1 WO 2000057753 A1 WO2000057753 A1 WO 2000057753A1 IT 0000093 W IT0000093 W IT 0000093W WO 0057753 A1 WO0057753 A1 WO 0057753A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
seat back
frame
chair
chair according
Prior art date
Application number
PCT/IT2000/000093
Other languages
French (fr)
Inventor
Donato D'urbino
Paolo Lomazzi
Original Assignee
Urbino Donato D
Paolo Lomazzi
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 Urbino Donato D, Paolo Lomazzi filed Critical Urbino Donato D
Priority to DE60003009T priority Critical patent/DE60003009T2/en
Priority to EP00919127A priority patent/EP1164896B1/en
Priority to AT00919127T priority patent/ATE241296T1/en
Priority to DK00919127T priority patent/DK1164896T3/en
Priority to AU39870/00A priority patent/AU3987000A/en
Publication of WO2000057753A1 publication Critical patent/WO2000057753A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • This invention relates to a chair as those used to sit at a table (that may be a dining table or other) allowing adaptation, that can be gradual as required, to increase comfort and especially relaxation by means of a maneuver that is particularly simple and easy. Additionally, the chair structure is particularly cost-effective to make, without cumbersome or unsightly components.
  • the seat back is jointed to the frame at an intermediate height while the front of the seat can slide on the frame and the back of the seat is suspended by means of a joint under the seat back.
  • a spring - such as, preferably, a traction spring, reacting between the frame and the seat under the seat - stresses the seat in such a way that the seat back is taken to the minimum tilt position with respect to a vertical line.
  • Spring tension can be adjusted by means of a screw or in another way.
  • the front of the seat can slide on two wheels arranged on two respective rolling bars which are part of the frame, the bars being slightly slanted forward and upward.
  • the supports of the wheels or other sliding devices can fasten the lower part of the seat underneath the rolling bars.
  • Suitable stops limit the movements of the seat and/or the seat back.
  • Figure 1 illustrates a side view of the chair with the seat back in minimum tilt position
  • Figure 2 is similar to Figure 1 , but partially in a section view and illustrates the seat back in a more tilted position;
  • Figure 3 is a partial section view according to Ill-Ill of Figure 1 with parts removed;
  • Figure 4 illustrates a local enlarged section according to IV-IV of Figure Figure 5 illustrates a detail of a different form of embodiment.
  • 1 generically indicates a main supporting frame of the chair with front legs 1A and rear legs 1 B, connecting cross bars such as 1 C, 1 D, 1 E and, in particular, two longitudinal bars 1 F which are parallel and symmetric with respect to the longitudinal symmetry plane for the purposes illustrated hereof.
  • the frame and, in particular, the rear legs 1 B present two upward extensions 1 G, which rise by the sides of the seat back 3 of the chair; this seat back is jointed by means of pins 5 to the upper ends of the two extensions 1 G, in such a way that the seat back 3 can rock on the common axis of pins 5, which axis is in an intermediate position with respect to the development of the seat back in height.
  • Reference 7 indicates the seat which is slightly tilted upward and forward, as shown in particular in Figures 1 and 2.
  • the back of the seat 7 is suspended by means of joint hinges 9 ( Figures 1 and 2) to the lower end or, in any case, to the lower part of the seat back 3, while the front part of the seat 7 is slidingly supported on the two bars 1 F of the frame 1 , which bars are also slightly slanted upward and forward.
  • Two supports 10, which are part of a stiff component 11 fastened under the seat 7, are arranged on the bars 1 F to support and slide the seat 7 on the bars 1 F; each support 10 engages a wheel 12 which can turn, the wheel being contoured advantageously and, in any case, in such a way to allow supporting and rolling on the corresponding bar 1 F.
  • the supports 10 are contoured to encompass the lower part of the bars 1 F and prevent the seat 7 from being lifted off the bars 1 F while ensuring that the seat is free to move by effect of the rolling wheels 12 when these wheels are on the bars 1 F; shims 13 ( Figure 4) prevent direct contacts between the supports 10 and the bars 1 F.
  • the seat can essentially move according to the double arrow f7 in a direction approximately corresponding to that of the bars 1 F, seat back 3 tilting on hinges 5 as the seat 7 moves. Consequently, the seat and the seat back can reach different positions, in particular, a series of positions included between the two extremes delimited, for example, by cross bars 1 D and 1 E which correspond, respectively, to the minimum and maximum tilt of seat back 3 with respect to a vertical line.
  • These extremes can be delimited - alternatively - by suitable stops either of the oscillation of the seat back with respect to the frame 1 or of the excursion of supports 10 with respect to the bars 1 F with possibility of adjustment.
  • a suitable elastic device is arranged to apply stress on the seat and the seat back holding the seat back in the less tilted position with respect to a vertical line, which is the position of the chair for use at a table, such as a dining table or other.
  • a traction spring 14 may be arranged, the spring being anchored to cross bar 1C and to an appendix 11A of the component 11 fastened to the seat 7 to pull the seat 7 to its most backward position, i.e. towards the left in Figures 1 to 3.
  • the elastic device 14 stresses the arrangement 7, 3 in the position shown in Figure 1 , while the user of the seat - sitting on seat 7 - can push the upper part of the seat back 3 with his back, overcoming the action of the elastic device 14 and the action of gravity, to increase the tilt of seat back 3 with respect to the vertical line in order to reach more and more tilted positions with respect to the vertical line of the seat back 3 to reach the position shown in Figure 2 which is a relaxing position allowed by the chair herein illustrated; during these movements, the seat 7 moves slightly only in the direction approximately of the double arrow f7, with a slight variation in tilt due to the circumferential trajectory of the hinges 9 around the center defined by the pins 5 joining the seat back 3 to the frame 1. Armrests as those referred to as 16 of any suitable shape mainly engaging the base formed by the frame 1 and the ends of the extensions of the cross bar 1 D of said frame can be fitted on the chair.
  • the spring 14 is anchored to the cross bar 1 C in an adjustable fashion so to vary the tension of the spring 14.
  • the spring 14 is fastened to a hole 40 in a partially threaded rod 42 which can slide without turning inside a tubular bushing 44 welded to the cross bar 1 C of the frame 1 ; the rod 42 can present a lengthwise groove 42A in which a prong
  • a knob 46 is arranged and can turn against the end 44B of the tubular bushing 44, the knob being fastened on the threading of the rod 42.
  • the tension of spring 14 can be varied by turning the knob 46.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

The seat back (3) is jointed at an intermediate height to the supporting frame (1, 1G), the front of the seat (7) slides on bars (1F) of said supporting frame (1) and the back of the seat is suspended by means of joints (9) under the seat back (3).

Description

"A CHAIR WITH AN ELASTIC, COUNTER-REACTING, RECLINING SEAT
BACK"
DESCRIPTION
This invention relates to a chair as those used to sit at a table (that may be a dining table or other) allowing adaptation, that can be gradual as required, to increase comfort and especially relaxation by means of a maneuver that is particularly simple and easy. Additionally, the chair structure is particularly cost-effective to make, without cumbersome or unsightly components. These and other purposes and advantages will result from the following text.
Essentially, in the chair according to this invention - comprising a frame, a seat and a seat back - the seat back is jointed to the frame at an intermediate height while the front of the seat can slide on the frame and the back of the seat is suspended by means of a joint under the seat back. A spring - such as, preferably, a traction spring, reacting between the frame and the seat under the seat - stresses the seat in such a way that the seat back is taken to the minimum tilt position with respect to a vertical line.
Spring tension can be adjusted by means of a screw or in another way.
In practice, the front of the seat can slide on two wheels arranged on two respective rolling bars which are part of the frame, the bars being slightly slanted forward and upward. The supports of the wheels or other sliding devices can fasten the lower part of the seat underneath the rolling bars.
Suitable stops limit the movements of the seat and/or the seat back.
This invention will be illustrated with reference to a preferred embodiment as non-limiting examples in the enclosed drawings, whereas:
Figure 1 illustrates a side view of the chair with the seat back in minimum tilt position;
Figure 2 is similar to Figure 1 , but partially in a section view and illustrates the seat back in a more tilted position; Figure 3 is a partial section view according to Ill-Ill of Figure 1 with parts removed;
Figure 4 illustrates a local enlarged section according to IV-IV of Figure Figure 5 illustrates a detail of a different form of embodiment.
As illustrated in the enclosed drawing, 1 generically indicates a main supporting frame of the chair with front legs 1A and rear legs 1 B, connecting cross bars such as 1 C, 1 D, 1 E and, in particular, two longitudinal bars 1 F which are parallel and symmetric with respect to the longitudinal symmetry plane for the purposes illustrated hereof. The frame and, in particular, the rear legs 1 B present two upward extensions 1 G, which rise by the sides of the seat back 3 of the chair; this seat back is jointed by means of pins 5 to the upper ends of the two extensions 1 G, in such a way that the seat back 3 can rock on the common axis of pins 5, which axis is in an intermediate position with respect to the development of the seat back in height. Reference 7 indicates the seat which is slightly tilted upward and forward, as shown in particular in Figures 1 and 2. The back of the seat 7 is suspended by means of joint hinges 9 (Figures 1 and 2) to the lower end or, in any case, to the lower part of the seat back 3, while the front part of the seat 7 is slidingly supported on the two bars 1 F of the frame 1 , which bars are also slightly slanted upward and forward.
Two supports 10, which are part of a stiff component 11 fastened under the seat 7, are arranged on the bars 1 F to support and slide the seat 7 on the bars 1 F; each support 10 engages a wheel 12 which can turn, the wheel being contoured advantageously and, in any case, in such a way to allow supporting and rolling on the corresponding bar 1 F. The supports 10 are contoured to encompass the lower part of the bars 1 F and prevent the seat 7 from being lifted off the bars 1 F while ensuring that the seat is free to move by effect of the rolling wheels 12 when these wheels are on the bars 1 F; shims 13 (Figure 4) prevent direct contacts between the supports 10 and the bars 1 F.
As a result, the seat can essentially move according to the double arrow f7 in a direction approximately corresponding to that of the bars 1 F, seat back 3 tilting on hinges 5 as the seat 7 moves. Consequently, the seat and the seat back can reach different positions, in particular, a series of positions included between the two extremes delimited, for example, by cross bars 1 D and 1 E which correspond, respectively, to the minimum and maximum tilt of seat back 3 with respect to a vertical line. These extremes can be delimited - alternatively - by suitable stops either of the oscillation of the seat back with respect to the frame 1 or of the excursion of supports 10 with respect to the bars 1 F with possibility of adjustment.
A suitable elastic device is arranged to apply stress on the seat and the seat back holding the seat back in the less tilted position with respect to a vertical line, which is the position of the chair for use at a table, such as a dining table or other. In particular, a traction spring 14 may be arranged, the spring being anchored to cross bar 1C and to an appendix 11A of the component 11 fastened to the seat 7 to pull the seat 7 to its most backward position, i.e. towards the left in Figures 1 to 3. Consequently, the elastic device 14 stresses the arrangement 7, 3 in the position shown in Figure 1 , while the user of the seat - sitting on seat 7 - can push the upper part of the seat back 3 with his back, overcoming the action of the elastic device 14 and the action of gravity, to increase the tilt of seat back 3 with respect to the vertical line in order to reach more and more tilted positions with respect to the vertical line of the seat back 3 to reach the position shown in Figure 2 which is a relaxing position allowed by the chair herein illustrated; during these movements, the seat 7 moves slightly only in the direction approximately of the double arrow f7, with a slight variation in tilt due to the circumferential trajectory of the hinges 9 around the center defined by the pins 5 joining the seat back 3 to the frame 1. Armrests as those referred to as 16 of any suitable shape mainly engaging the base formed by the frame 1 and the ends of the extensions of the cross bar 1 D of said frame can be fitted on the chair.
In a different form of embodiment illustrated in Figure 5, equivalent parts are indicated with the same references 1C and 14 of the previous example. According to this embodiment, the spring 14 is anchored to the cross bar 1 C in an adjustable fashion so to vary the tension of the spring 14. The spring 14 is fastened to a hole 40 in a partially threaded rod 42 which can slide without turning inside a tubular bushing 44 welded to the cross bar 1 C of the frame 1 ; the rod 42 can present a lengthwise groove 42A in which a prong
44A made on the bushing 44, or welded to it, can penetrate. A knob 46 is arranged and can turn against the end 44B of the tubular bushing 44, the knob being fastened on the threading of the rod 42. The tension of spring 14 can be varied by turning the knob 46.

Claims

1. A chair comprising a frame, a seat and a seat back, characterised in that: the seat back (3) is jointed (5) at an intermediate height to the frame (1 , 1G); and the front of the seat (7) slides approximately horizontally on the frame and the rear of the seat is suspended with joints (9) to the seat back (3).
2. A chair according to claim 1 , characterised in that a spring reacts between the frame and the seat (or the seat back) to pull the seat back to the minimum tilt position with respect to a vertical line.
3. A chair according to claim 2, characterised in that the spring is a traction spring (14) anchored to the frame and to the front part of the seat (7) underneath the seat.
4. A chair according to claims 1 , 2 or 3, characterised in that the front of the seat (7) slides on two wheels (12) supported by two respective rolling bars (4F) which are part of the frame (1), the front part of the bars (1 F) being slightly slanted forward and upward.
5. A chair according to claim 4, characterised in that supports (10) for the wheels (12) engage the seat (7) under the rolling bars (1 F).
6. A chair according to any of the preceding claims, characterised in that it comprises two stops for the seat and/or the seat back, which stops may be adjustable.
7. A chair according to claim 1 , characterised in that the frame presents two contoured armrests.
8. A chair according to claim 3, characterised in that spring (14) is anchored by means of an adjustable screw device (42, 46).
9. A chair with elastic, counter-reacting, reclining seat back; as described above and illustrated in the enclosed drawing.
PCT/IT2000/000093 1999-03-26 2000-03-20 A chair with an elastic, counter-reacting, reclining seat back WO2000057753A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE60003009T DE60003009T2 (en) 1999-03-26 2000-03-20 CHAIR WITH ELASTIC, COUNTERFLOWING, ADJUSTABLE BACKREST
EP00919127A EP1164896B1 (en) 1999-03-26 2000-03-20 A chair with an elastic, counter-reacting, reclining seat back
AT00919127T ATE241296T1 (en) 1999-03-26 2000-03-20 CHAIR WITH ELASTIC, COUNTERACTING, ADJUSTABLE BACKREST
DK00919127T DK1164896T3 (en) 1999-03-26 2000-03-20 Chair with elastically counteracting, reclining backrest
AU39870/00A AU3987000A (en) 1999-03-26 2000-03-20 A chair with an elastic, counter-reacting, reclining seat back

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI99U000035 1999-03-26
IT1999FI000035U IT247837Y1 (en) 1999-03-26 1999-03-26 A TILTING BACK CHAIR, AGAINST ELASTIC REACTION

Publications (1)

Publication Number Publication Date
WO2000057753A1 true WO2000057753A1 (en) 2000-10-05

Family

ID=11352814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2000/000093 WO2000057753A1 (en) 1999-03-26 2000-03-20 A chair with an elastic, counter-reacting, reclining seat back

Country Status (7)

Country Link
EP (1) EP1164896B1 (en)
AT (1) ATE241296T1 (en)
AU (1) AU3987000A (en)
DE (1) DE60003009T2 (en)
DK (1) DK1164896T3 (en)
IT (1) IT247837Y1 (en)
WO (1) WO2000057753A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101180482B1 (en) * 2010-10-25 2012-09-06 주식회사 코아스 Chair
US20220378208A1 (en) * 2019-06-17 2022-12-01 Quali Co., Ltd. Tilt chair
KR102526688B1 (en) * 2022-10-18 2023-04-27 이재오 A close-pressing type sliding sofa chair and a method of assembling the close-pressing-type sliding sofa chair

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB546377A (en) * 1941-09-06 1942-07-09 Arthur Reginald Turland Improvements in or relating to upholstered furniture
US2374848A (en) * 1945-05-01 Reclining chair
DE4225286A1 (en) * 1992-07-31 1994-02-03 Steltemeier Gmbh Convertible chair and recliner with chair frame retractable from furniture frame - has backrest frame movable on furniture frame, and horizontal supports with two pairs of castors moving along bar

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374848A (en) * 1945-05-01 Reclining chair
GB546377A (en) * 1941-09-06 1942-07-09 Arthur Reginald Turland Improvements in or relating to upholstered furniture
DE4225286A1 (en) * 1992-07-31 1994-02-03 Steltemeier Gmbh Convertible chair and recliner with chair frame retractable from furniture frame - has backrest frame movable on furniture frame, and horizontal supports with two pairs of castors moving along bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101180482B1 (en) * 2010-10-25 2012-09-06 주식회사 코아스 Chair
US20220378208A1 (en) * 2019-06-17 2022-12-01 Quali Co., Ltd. Tilt chair
KR102526688B1 (en) * 2022-10-18 2023-04-27 이재오 A close-pressing type sliding sofa chair and a method of assembling the close-pressing-type sliding sofa chair

Also Published As

Publication number Publication date
EP1164896B1 (en) 2003-05-28
DE60003009T2 (en) 2004-04-29
DE60003009D1 (en) 2003-07-03
ITFI990035U1 (en) 2000-09-26
AU3987000A (en) 2000-10-16
DK1164896T3 (en) 2003-09-15
ITFI990035V0 (en) 1999-03-26
EP1164896A1 (en) 2002-01-02
ATE241296T1 (en) 2003-06-15
IT247837Y1 (en) 2002-09-10

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