EP0456008A1 - Cadre de pied pour un meuble pliant et articulation pour ce cadre - Google Patents

Cadre de pied pour un meuble pliant et articulation pour ce cadre Download PDF

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Publication number
EP0456008A1
EP0456008A1 EP91106012A EP91106012A EP0456008A1 EP 0456008 A1 EP0456008 A1 EP 0456008A1 EP 91106012 A EP91106012 A EP 91106012A EP 91106012 A EP91106012 A EP 91106012A EP 0456008 A1 EP0456008 A1 EP 0456008A1
Authority
EP
European Patent Office
Prior art keywords
joint
pin
leg
legs
pin hole
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.)
Granted
Application number
EP91106012A
Other languages
German (de)
English (en)
Other versions
EP0456008B1 (fr
Inventor
Rainer Dipl.-Ind.-Des. Schmitz
Wolf-Dieter Dipl.-Ind.-Des. Krause
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.)
HARTMAN GROEP BV
Original Assignee
HARTMAN GROEP BV
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 HARTMAN GROEP BV filed Critical HARTMAN GROEP BV
Publication of EP0456008A1 publication Critical patent/EP0456008A1/fr
Application granted granted Critical
Publication of EP0456008B1 publication Critical patent/EP0456008B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/14—Beach chairs ; Chairs for outdoor use, e.g. chairs for relaxation or sun-tanning
    • A47C1/143—Chaise lounges
    • 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
    • A47C4/04—Folding chairs with inflexible seats
    • 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
    • A47C4/04—Folding chairs with inflexible seats
    • A47C4/08—Folding chairs with inflexible seats having a frame made of wood or plastics
    • A47C4/10—Folding chairs with inflexible seats having a frame made of wood or plastics with legs pivotably connected to seat or underframe
    • A47C4/14—Folding chairs with inflexible seats having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors

Definitions

  • the invention relates to a leg frame for a folding piece of furniture with at least one pair of legs, the two rows of which are connected in a V arrangement at their upper ends via a joint which can be spread and folded, the joint having a joint head connected to one leg with a joint pin and one with the other leg connected joint socket with a mortise.
  • the invention further relates to a joint part which is intended to make two legs of a leg frame for a folding piece of furniture in a V-shaped arrangement expandable and foldable.
  • Leg frames or joint parts of the type mentioned at the outset are known. They serve to make folding furniture, such as camping, garden and patio chairs or loungers, so that these pieces of furniture can be folded to a minimum and take up little space in this state. It has been found to be disadvantageous that with very closely spaced legs of a pair of legs that are brought together in one joint, the risk of injury and bruising is very great, since the operator gets his fingers between the two legs. This creates a dangerous situation with folding furniture that is equipped with known leg frames and joints Scherstelle because the legs move towards each other until they lie on top of each other. It is therefore usually avoided that the joint is equipped so that the two legs are completely on top of each other. Because of this scope, the volume of the folded furniture is 15 to 25% larger than that of a piece of furniture that does not have this safety margin.
  • leg frame or a joint part for garden furniture in which no such dangerous situation arises, even if it should be possible in principle to fold the legs one on top of the other. Nevertheless, the leg frame should not have any dangerous insecurities in a spread standing position, that is, it should have no undesirable play in the joint.
  • the pin hole is designed as a pin hole extending transversely to the bisector of the spreading angle, and a control member is provided in the region of the joint, which at the extreme spread position of the legs has the joint pin at one end of the mortise.
  • the invention is also implemented by a corresponding joint part.
  • a pin hole is accordingly provided which allows the pin a certain play, so that in the folded state the two legs can be pulled apart by the effective length of the pin hole and pressed together again. In any case, it prevents the operator's fingers from getting caught between the legs. If the leg frame is spread out, a control element comes into action at a certain spreading angle which is smaller than the final spreading angle, that pushes the two legs apart or pulls together in the joint area, at least in such a way that at the end point of the spreading movement the pin comes to rest in one or the other extreme position of the pin hole and is fixed there.
  • the pin hole is preferably a circular ring section which is rounded at its ends and which is concave toward the expansion opening.
  • Other mortise shapes are also conceivable, for example an essentially straight mortise hole, which has latching nests formed at its ends downwards.
  • This end of the mortise is the one that points towards the inside of the joint.
  • This end of the mortise is the one that faces the outside of the joint.
  • control element intervenes only when a certain spreading angle has been reached and has no effect when the legs are in the folded parallel position.
  • joint head with joint pin or joint socket with pin hole can also be assigned differently according to professional judgment, in each case mutatis mutandis.
  • the invention also relates to a joint part.
  • the use of this joint part is not only limited to a leg frame, but can also be used in other parts, for example in the case of a joint between the seat and leg rest in a recliner furniture or between the backrest and the seat. foldable elements in seating.
  • a folding lounger 1 is shown opened, in which the leg frame 2 consists of two pairs of legs lying opposite one another on both sides of the folding lounger, the front legs 4, 4 'of which are joined together by a stiffening bar 9 and the rear legs 3, 3' of which are connected by a stiffening bar 9 ' are connected.
  • the legs frame 2 consists of two pairs of legs lying opposite one another on both sides of the folding lounger, the front legs 4, 4 'of which are joined together by a stiffening bar 9 and the rear legs 3, 3' of which are connected by a stiffening bar 9 ' are connected.
  • isolated pairs of legs 3, 4 and 3 ', 4' can of course also be used.
  • the pairs of legs 3, 4 and 3 ', 4' are connected to one another at their upper ends via a joint 10, so that they form the shape of an upside-down V's.
  • the design of the joint 10 and the joint region is essential for the invention.
  • Figures 3 to 7 show essential details.
  • the upper end of the rear leg 3 ends in a joint socket 13, which, as the plan view according to FIG. 4 shows, consists of two fork surface elements 17, 17 'which are spaced apart and parallel to one another.
  • the fork surface elements 17, 17 ' are provided from the inside of the socket with depressions or preferably openings, which are referred to below as "pin holes" and which bear the reference number 16, 16'.
  • the pin hole 16 has an outer contour, as shown in Figure 3 in plan view.
  • the mortise extends transversely to the bisector W of the spreading angle ⁇ .
  • the definition of "transversely” is to be understood in such a way that an angle of 90 ° to the bisector W does not necessarily have to be maintained, but rather indicates that the extension of the mortise does not extend in the direction of the bisector W.
  • Different angles can be taken with respect to the bisector of the angle, which is documented by the fact that the pin hole 16 does not run exactly straight, but is a circular ring section which is rounded at the ends and points concavely toward the expansion opening.
  • the pin hole 16 accordingly has a length, measured over the center sliding distance G of the pin hole, of approximately 1 ⁇ D, where D is the diameter of the pin 15 to be described.
  • the "center sliding distance" of the pin is designated by G in FIG.
  • a guide track 18 is provided, which consists of a smooth wall at the rear of the space between the two fork surface elements.
  • the upper part of the rear leg 3 forms a support element 19 which engages under the armrest 5 when the garden furniture is later assembled.
  • the other configuration of the rear leg corresponds to the usual measures to be provided in plastic production and will not be explained further here.
  • FIGS. 5 and 6 show the upper section of the front leg 4 of a leg frame.
  • the front leg 4 ends in its upper end in a joint head 14, which also has two fork surface elements 11, 11 'which are parallel to one another, but have a distance which is less than that of the elements 17, 17'.
  • the fork surface elements 11, 11 'each have a pin 15, 15', which is made of solid or solid plastic and in the exemplary embodiment described here has a diameter D of approximately 18 mm.
  • the two forked surface elements 11, 11 'provided with pins 15, 15' are inserted between the forked surface elements 17, 17 ', so that the outwardly projecting pins 15, 15' snap into the pin holes 16, 16 'and are rotatably held there.
  • the fork surface elements also have a sliding nose 12 arranged above the pin 15, which, as can be seen, forms the free point of the joint head 14 which is the most distant from the center of the pin 15.
  • FIG. 7 Let us now consider FIG. 7.
  • the two parts 3 and 4 are joined together in the region of the joint 10. It can be seen that the pin 15 has slid into the right position in the pin hole 16. It is also fixed in this position, because the sliding lug 12 has slid over the upper part of the guide track 18, the distance between the two parts 3 and 4 increasing in the area of the joint in accordance with the curvature and the distance of the sliding lug as the spread increases . In the outermost spread position of the legs, as shown in FIG. 7, the pin 15 is therefore fixed at the extreme end of the pin hole 16 by pressure and by the stable configuration of the legs 3, 4 on the ground.
  • the compatible parts sliding lug 12 and guideway 18 form a control element which is present in the region of the joint and which fixes the pivot pin 15 at one end of the pivot hole 16 when the legs are in the extreme spread position.
  • the sliding lug 12 disengages, that is, it no longer slides on the guide track 18, so that the position of the pin 15 is free and this can move back and forth within the pin hole 16. This ensures that when the legs are folded or are about to be folded, there is a certain amount of play corresponding to the length of the pin hole, so that fingers or the like which get between the leg surface can no longer get stuck.
  • FIGS. 8 and 9 The space-saving version is shown in FIG. 8.
  • the pin 15 is in the left position of the pin hole 16 and thus enables the legs 3, 4 to lie firmly on one another.
  • a security area 20 is open, which results from the fact that the pin 15 has moved from the position according to FIG. 8 into the right position according to FIG. 9 within the pin hole 16 by simply pulling apart, which is possible without effort.
  • no "hooking" or the like is required.
  • the guide element intervenes automatically as soon as the sliding lug comes into contact with the guide track 18.
  • control member can comprise a guide web attached to the joint head, over which a guide claw attached to the joint socket overlaps.
  • a guide claw which acts similarly to a sliding lug, only pulls.
  • the guide claw pulls the two joint parts towards one another and finally brings the pin into the right position within the pin hole 16, if this is considered analogously to FIG. 7.
  • this embodiment may have certain disadvantages, since when spreading apart the guide claw must first be positioned in relation to your guide bar.
  • the leg frame in particular the joint part, is preferably made exclusively of plastic.
  • other materials for example metal, can also be used.
  • Combinations of several plastics and / or plastic / metal are also conceivable.
  • the idea of the invention of a pin that can be moved to a limited extent within a pin hole can be easily realized.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Furniture Connections (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP91106012A 1990-05-07 1991-04-16 Cadre de pied pour un meuble pliant et articulation pour ce cadre Expired - Lifetime EP0456008B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9005126U 1990-05-07
DE9005126 1990-05-07
DE4026059 1990-08-17
DE4026059A DE4026059A1 (de) 1990-05-07 1990-08-17 Beingestell fuer ein klappmoebel und gelenkteil fuer ein beingestell

Publications (2)

Publication Number Publication Date
EP0456008A1 true EP0456008A1 (fr) 1991-11-13
EP0456008B1 EP0456008B1 (fr) 1994-11-02

Family

ID=25896002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106012A Expired - Lifetime EP0456008B1 (fr) 1990-05-07 1991-04-16 Cadre de pied pour un meuble pliant et articulation pour ce cadre

Country Status (2)

Country Link
EP (1) EP0456008B1 (fr)
DE (2) DE4026059A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371923A4 (fr) * 2001-03-13 2005-04-27 Sharp Kk Mecanisme de came et mecanisme d'ouverture/fermeture de porte
CN1299620C (zh) * 2004-12-24 2007-02-14 崔忠民 多功能折叠式椅子
CN113891670A (zh) * 2019-06-04 2022-01-04 野醍冷却器有限责任公司 便携式椅子

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789623A (en) * 1956-04-10 1957-04-23 Frank A Lisi Collapsible chair
DE3319757A1 (de) * 1982-09-14 1984-03-15 Tokyo Shibaura Denki K.K., Kawasaki Tuerscharnieranordnung fuer einen aufbewahrungsschrank
EP0267487A2 (fr) * 1986-11-14 1988-05-18 Karl Münkel GmbH & Co. KG. Dispositif d'articulation pour l'utilisation entre un pied avant et un pied arrière d'un meuble pliant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309186C1 (de) * 1983-03-15 1984-04-05 Bemico Enschede B.V., Enschede Gelenkvorrichtung zur Anordnung zwischen Vorder- und Hinterbein eines Klappmöbels
DE8436612U1 (de) * 1984-12-14 1985-05-23 Heinz Kettler Metallwarenfabrik Gmbh & Co, 4763 Ense Klappsessel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789623A (en) * 1956-04-10 1957-04-23 Frank A Lisi Collapsible chair
DE3319757A1 (de) * 1982-09-14 1984-03-15 Tokyo Shibaura Denki K.K., Kawasaki Tuerscharnieranordnung fuer einen aufbewahrungsschrank
EP0267487A2 (fr) * 1986-11-14 1988-05-18 Karl Münkel GmbH & Co. KG. Dispositif d'articulation pour l'utilisation entre un pied avant et un pied arrière d'un meuble pliant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371923A4 (fr) * 2001-03-13 2005-04-27 Sharp Kk Mecanisme de came et mecanisme d'ouverture/fermeture de porte
US7506474B2 (en) 2001-03-13 2009-03-24 Sharp Kabushiki Kaisha CAM mechanism for shifting a rotary member supported on a base member when the rotary member is opened and closed
CN1299620C (zh) * 2004-12-24 2007-02-14 崔忠民 多功能折叠式椅子
CN113891670A (zh) * 2019-06-04 2022-01-04 野醍冷却器有限责任公司 便携式椅子

Also Published As

Publication number Publication date
DE4026059C2 (fr) 1992-02-20
DE4026059A1 (de) 1991-11-14
DE59103390D1 (de) 1994-12-08
EP0456008B1 (fr) 1994-11-02

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