EP0052031A1 - In beschränktem Volumen und beschränkter Länge klappbarer Stuhl - Google Patents

In beschränktem Volumen und beschränkter Länge klappbarer Stuhl Download PDF

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Publication number
EP0052031A1
EP0052031A1 EP81401612A EP81401612A EP0052031A1 EP 0052031 A1 EP0052031 A1 EP 0052031A1 EP 81401612 A EP81401612 A EP 81401612A EP 81401612 A EP81401612 A EP 81401612A EP 0052031 A1 EP0052031 A1 EP 0052031A1
Authority
EP
European Patent Office
Prior art keywords
folding
support
articulated
seat
seat according
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Withdrawn
Application number
EP81401612A
Other languages
English (en)
French (fr)
Inventor
Jean-Paul Pierre
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0052031A1 publication Critical patent/EP0052031A1/de
Withdrawn legal-status Critical Current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
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/286—Folding chairs with flexible coverings for the seat or back elements foldable side to side and front to back, e.g. umbrella type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/30—Attachment of upholstery or fabric to frames

Definitions

  • the present invention relates to equipment of the "foldable seat” type, making it possible to offer maximum comfort to its user, this for use, its transport and its storage having to be done in the smallest possible footprint.
  • folding systems generally reduce the chair to a relatively large volume, since the interior space of the assembly remains constant, at least in one dimension.
  • the fabrics constituting the seat and the backrest, when folding, take the most diverse positions. This results on the one hand, discomfort at the joints of the frame, on the other hand premature wear of these. fabrics because of the numerous "creases" or jams to which they are subjected.
  • the seat or armchair, object of the invention makes it possible to avoid these drawbacks. It is in fact designed in such a way that after folding, there is no "void” in its volume.
  • the rigid frameworks of the sides close in “portfolio", they are interconnected by two parallelograms with automatic locking, the whole being rigid.
  • the fabrics or slats constituting the seat and the backrest are mounted on reels integrated in the profiles of the frame. When the folding is done, the mechanical elements also integrate into the foot profiles. The combination of these systems allows extremely space low of the folded assembly, because it is limited to the volume of the elements nested between them, without vacuum.
  • the proposed folding seat is of the type in which a seat and a backrest can be put in place between two lateral support structures, interconnected transversely by connections allowing their folding against one another.
  • each of the lateral structures consists of parts pivotally articulated on the seat support, all these articulations admitting a pivoting of the elements of the support structure one on the other around perpendicular axes. in terms of the support structure, which allows the lateral structures to be folded into an elongated compact block against the seat supports now placed side by side.
  • the lateral support structure comprises an articulated interaction link between at least the front leg and the back support upright at the rear.
  • the articulated interaction link comprises a short upright articulated at an intermediate point of the seat support, an articulated arm between one end of this short upright and an intermediate point of the backrest support, and a connecting rod articulated between another point of this short amount and the front foot.
  • the articulated interaction link is arranged so that in the unfolded position, the arm is substantially horizontal, to form an armrest.
  • the back support and the rear leg interact to form a stop in the unfolded position.
  • the rear foot folds first, to come into position folded between the seat support and the corresponding front leg.
  • the fabrics or slats constituting the seat and the backrest are fitted with reels integrated into the frame.
  • the transverse interconnection links between the support structures act in deformable parallelograms and are lockable in the unfolded position.
  • the parallelograms can also be directly balanced by the reaction of contact with the ground.
  • these parallelograms also ensure the locking of the feet and / or the backrest.
  • the chair has two fabrics, one forming the seat 1, the other constituting the backrest 2. These two fabrics are integral with spring-loaded winding mandrels 31 and 32, on which they retract during folding.
  • Parallelograms (elements 41 and 44 at the front, 51 to 54 at the rear) ensure first of all the normal deployment of the chair when it is opened, secondly the parallelism of winding of the fabrics, and finally the rigidity of the assembly in the "open" position.
  • Tension springs 61 to 64 compensate for the force exerted by the reels 31 and 32, these being subjected to a permanent torque tending to bring the sides of the chair closer.
  • Blocking of the parallelograms is ensured by sliding spacers such as 7 (detail according to FIGS. 4A to 4C or 5A and 5B, as a variant).
  • the contour drawn in thin dashed line along the axis of the drawing in FIG. 3 represents the size of the chair after the first folding phase.
  • the chair in its second folding phase, operates according to the deflections shown diagrammatically by the arrow arcs ( Figure 2).
  • the tilting of the backrest 8 causes the front (71 and 72) and rear (73 and 74) feet to be folded.
  • a gear with a multiplier ratio (90 FIG. 6) allows the rear feet such as 74 to be rotated and bent before the front feet such as 72.
  • the rear feet 73 and 74 are held in position by jamming.
  • the establishment of the front legs 71 and 72 is therefore done with a "delay" which makes it possible to keep the folding order without the possibility of inversion.
  • the tilting of the uprights 81 and 82 of the backrest 8 causes the rotation of the rotating uprights 10 and 17, articulated on the seat supports 15 and 16, by means of the armrests 9 and 18 articulated on the one hand at an intermediate point of the file amount and on the other hand at the top of the corresponding rotating amount.
  • These same amounts 10 and 17 are furthermore articulated on connecting rods 11 and 13 which in turn are articulated on the front legs 71 and 72.
  • the gear 90 allows, if desired, the joint and prior folding of the rear legs between the front legs and the seat support.
  • the folded assembly is illustrated in Figure lA. And handles 12 and 12A can be used to help the first folding phase and allow the transport of the folded assembly. In addition, a mechanical transmission could make the two folding phases simultaneous.
  • the automatic blocking system for the parallelograms (detail 7) works as follows:
  • FIG. 4A represents the same assembly during folding. The chair being raised, the blocking is no longer ensured by the support on the ground.
  • the spacer 21 "falls back" (FIG. 4B and section AA of FIG. 4C), and releases the end of the parallelogram. Manual intervention by the user then makes it possible to slide the assembly until the parallelogram 53 and compensating spring assembly is retracted, inside the foot 74. In the folded position, the spacer is held in position low by contact of the parallelogram on a wing of the spacer.
  • the variant of the blocking means by spacer is associated with a leaf spring 23 which locks the chair.
  • this leaf spring 23 maintains the positioning of the parallelogram 53, thus avoiding inadvertent closing of the chair, during its movement for example.
  • the use of this leaf spring 23 imposes on the user a greater effort to perform the unlocking.
  • the gear 90 ensures, by its multiplier ratio, the folding of the rear feet before those of the front arrive under the seat.
  • the driving part is a toothed sector 91 which acts only in the first part of the folding on the sector 92 of the rear foot; beyond its action, the rear feet are held by wedging in the closed position.
  • the chair is equipped with a footrest 25, the elements of which are similar to the seat or the backrest.
  • a compass 26 allows the maintenance of the footrest.
  • Figures 8 and 8A show a variant of the chair according to the invention, respectively in the service position and in the fully folded position.
  • the unchanged elements keep the same reference numbers and will not be described again.
  • the arms 141 and 142, or 151 and 152 remain oblique.
  • the other arms 143 and 144, or 153 and 154 are blocked like a compass in a horizontal position, the chair being unfolded. It is then no longer necessary to provide a lock against the sliding of these arms in the feet.
  • FIG. 10 allows a better understanding in rear view of the folding of the parallelograms in the case of FIGS. 8 and 9.
  • Figure 11 also in rear view, illustrates another variant of parallelogram, without sliding in the rear legs 73 and 74: a symmetrical double parallelogram is formed between the legs 73 and 74 and a central upright 160 by the sides 161 and 163 d 'on the one hand, 162 and 164 ... on the other hand, these parallelograms descending towards each other.
  • Intermediate points on the high sides 161 and 162 are articulated symmetrically on rods 165 and 166 articulated at their other end on an eyelet 167 sliding on the upright 160, which ensures the maintenance of the symmetry.
  • At the same points on the sides 161 and 162 are articulated other links 168 and 169 forming, in the unfolded position of the chair, a horizontal locking compass.
  • FIGS 12A and 12B illustrate in 190 a simplified variant replacing the gear 90.
  • the backrest upright 82 abuts on the seat support 16.
  • the foot 73 comes into abutment on the rear of the backrest upright 82 , blocking it back and forth.
  • the part 51 of the parallelogram abuts on the shoulder 191 of the housing 190, thus preventing any movement of the rear foot and thereby of the backrest, the latter now in turn the front foot by the articulation already described.
  • the material, object of the invention can be used in all cases where a space requirement is imposed on the user. This is particularly the case in the field of camping or hiking. In fact, the known materials have a fairly large "folded” volume, which makes their transport restricting, sometimes even impossible.
  • This material as described and its many variants such as chairs, "relax”, slatted tables or bed in the field of leisure or occasional furniture, is suitable for all forms of transport. It can easily find a place on the luggage rack of a "two wheeler", or be carried in addition to a backpack for a hiker. Another application is that of a wheelchair for the disabled, which thus becomes easy to transport by car. Children's strollers are also an area of application of this invention.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)
EP81401612A 1980-10-28 1981-10-15 In beschränktem Volumen und beschränkter Länge klappbarer Stuhl Withdrawn EP0052031A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8023650 1980-10-28
FR8023650A FR2492644A1 (fr) 1980-10-28 1980-10-28 Fauteuil pliable sous volume et longueur restreints

Publications (1)

Publication Number Publication Date
EP0052031A1 true EP0052031A1 (de) 1982-05-19

Family

ID=9247701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401612A Withdrawn EP0052031A1 (de) 1980-10-28 1981-10-15 In beschränktem Volumen und beschränkter Länge klappbarer Stuhl

Country Status (2)

Country Link
EP (1) EP0052031A1 (de)
FR (1) FR2492644A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429413A (en) * 1990-06-01 1995-07-04 Levy; Lionel Folding lounge chair
GB2304279A (en) * 1995-08-14 1997-03-19 Gary Linley Folding chair
US5897161A (en) * 1997-02-12 1999-04-27 Karg; Peter W. Two-directionally folding chair
WO2002069761A1 (en) * 2001-03-02 2002-09-12 Tofasco Single-motion collapsible quad chair with solid armrest
US6607240B2 (en) * 2001-12-19 2003-08-19 Edward Zheng Collapsible chair with solid arm rest and tensioned seat
US6854797B1 (en) * 2002-09-09 2005-02-15 John S. Thomas Foldable bench
CN104137820A (zh) * 2014-08-06 2014-11-12 刘军 一种便携式垂钓凳

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771257A (fr) * 1933-12-09 1934-10-04 Chaise longue pliante
CH269753A (de) * 1949-01-05 1950-07-31 Erni Maurice Klappstuhl.
US2713385A (en) * 1951-04-11 1955-07-19 Dwight E Mcquilkin Four way folding chair
DE2856938A1 (de) * 1973-10-01 1980-01-10 Bemico Enschede Gelenk fuer klappmoebel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771257A (fr) * 1933-12-09 1934-10-04 Chaise longue pliante
CH269753A (de) * 1949-01-05 1950-07-31 Erni Maurice Klappstuhl.
US2713385A (en) * 1951-04-11 1955-07-19 Dwight E Mcquilkin Four way folding chair
DE2856938A1 (de) * 1973-10-01 1980-01-10 Bemico Enschede Gelenk fuer klappmoebel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429413A (en) * 1990-06-01 1995-07-04 Levy; Lionel Folding lounge chair
GB2304279A (en) * 1995-08-14 1997-03-19 Gary Linley Folding chair
GB2304279B (en) * 1995-08-14 1999-04-28 Gary Linley Folding chair
US5897161A (en) * 1997-02-12 1999-04-27 Karg; Peter W. Two-directionally folding chair
WO2002069761A1 (en) * 2001-03-02 2002-09-12 Tofasco Single-motion collapsible quad chair with solid armrest
US6607240B2 (en) * 2001-12-19 2003-08-19 Edward Zheng Collapsible chair with solid arm rest and tensioned seat
US6854797B1 (en) * 2002-09-09 2005-02-15 John S. Thomas Foldable bench
US7303228B1 (en) 2002-09-09 2007-12-04 Thomas John S Foldable bench
CN104137820A (zh) * 2014-08-06 2014-11-12 刘军 一种便携式垂钓凳

Also Published As

Publication number Publication date
FR2492644A1 (fr) 1982-04-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19820909

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Effective date: 19831214