EP2981192A1 - Cadre métallique pour sièges avec éléments tubulaires - Google Patents

Cadre métallique pour sièges avec éléments tubulaires

Info

Publication number
EP2981192A1
EP2981192A1 EP14721520.6A EP14721520A EP2981192A1 EP 2981192 A1 EP2981192 A1 EP 2981192A1 EP 14721520 A EP14721520 A EP 14721520A EP 2981192 A1 EP2981192 A1 EP 2981192A1
Authority
EP
European Patent Office
Prior art keywords
crossmember
shaped elements
frame
frame according
portions
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
EP14721520.6A
Other languages
German (de)
English (en)
Other versions
EP2981192B1 (fr
Inventor
Paolo Scagnellato
Jeremiah FERRARESE
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.)
Cerantola SpA
Original Assignee
Cerantola SpA
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 Cerantola SpA filed Critical Cerantola SpA
Publication of EP2981192A1 publication Critical patent/EP2981192A1/fr
Application granted granted Critical
Publication of EP2981192B1 publication Critical patent/EP2981192B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47C3/04—Stackable chairs; Nesting 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
    • A47C7/002—Chair or stool bases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/04—Metal chairs, e.g. tubular

Definitions

  • the present invention relates to a metallic frame for chairs with tubular elements.
  • This type of structure is also designed so that it can be stacked easily for storage and transport on pallets.
  • the aim of the present invention is to provide a metallic frame for chairs with tubular elements that is lighter than known frames and therefore can be handled more easily by a user and, when stacked with other identical frames, occupies with them a smaller volume than known frames.
  • an object of the invention is to provide a frame that is at least as solid as currently commercially available frames and that in particular is not subject to tipping problems.
  • Another object of the invention is to reduce the transport costs of frames for chairs with tubular elements.
  • Another object of the invention is to obtain a chair that has a different visual impact than known chairs.
  • a metallic frame for chairs with tubular elements characterized in that it comprises two inverted V-shaped elements that form the legs of a chair, which are parallel and joined substantially at their inside curvature to a rodlike crossmember, two L-shaped elements connected by said crossmember on which they are arranged in a parallel configuration so as to form a support for the back and for the seat, respectively with their first portions, which are substantially vertical, and second portions, which are substantially horizontal.
  • Figure 1 is a perspective view of a frame according to the invention
  • Figure 2 is an enlarged-scale view of a detail of the frame of Figure 1 ;
  • Figure 3 is a view of a detail of a portion of an L-shaped element
  • Figure 4 is an enlarged-scale view of a detail of a portion of an inverted V-shaped element
  • Figure 5 is an enlarged-scale view of another detail of another portion of an inverted V-shaped element
  • Figure 6 is a side view of the frame according to the invention.
  • Figure 7 is a front view of the frame according to the invention.
  • Figure 8 is a top view of the frame according to the invention.
  • Figure 9 is a perspective view of two frames according to the invention, stacked vertically according to a first stacking method
  • Figure 10 is a perspective view of a column of frames according to the invention, stacked vertically with a second stacking method
  • Figure 1 1 is a top view of four columns of frames stacked according to the method of Figure 10.
  • the frame is formed by tubular elements 1 1 , the mutual association of which is provided by welding.
  • the frame 10 as a whole is shown in Figure 1. It comprises two inverted V-shaped elements 12, which form the legs of the chair, and two L- shaped elements 13, which form a support for the back and the seat.
  • the two inverted V-shaped elements 12 are parallel and are joined substantially at their inside curvature 14, shown in detail in Figure 4, to a rodlike crossmember 15.
  • the L-shaped elements 13 are connected by the crossmember 15 and are joined to it again by welding and are arranged thereon in a parallel configuration. In particular, they form a support for the back with their first portions 16, which are substantially vertical, and form a support for the seat with their second portions 17, which are substantially horizontal and mutually parallel.
  • Figure 2 is an enlarged-scale view of the frame on the joining regions of an inverted V-shaped element 12 and of an L-shaped element to the crossmember 15.
  • Each one of the inverted V-shaped elements 12 has a first pair of raised portions 18, at the inside curvature 14, which is formed by a corresponding first recess 19 of the cross-section obtained with a plastic compression deformation. Said first recess 19 is provided so that upon V- shaped bending the excess material does not form wrinkles in the region of the inside curvature 14.
  • the first pair of raised portions 18 and the first recess 19 are visible in the enlarged-scale view of Figure 4. Joining by welding occurs in the regions of contact of the first pair of raised portions 18 with the crossmember 15, which consist of at least four points, but welding can extend, depending on the shape of the inside curvature 14 and of the crossmember 15, up to one or two parallel lines that correspond to the two raised portions.
  • Each one of the L-shaped elements 13 advantageously has a second pair of raised portions 20, formed by a corresponding second recess 21 on the lower side of the second portion 17 and so as to correspond to the region for joining to the crossmember 15.
  • the second pair of raised portions 20 is also provided specifically by plastic compression deformation and produces a localized contact region at which welding with the crossmember 15 occurs.
  • each one of the L-shaped elements 13 also has an additional pair of raised portions 22 at the curvature region 23, which are formed by an additional recess 24 that is also obtained by plastic compression deformation, again to prevent that, as a consequence of the bending, the curvature region 23 of the L-shaped element 13 has wrinkles caused by an excess of material in the regions having a smaller radius.
  • the first portions 16 and the second portions 17 of the L-shaped elements conveniently have a flattened cross-section, in order to give the back and the seat a larger contact surface, and it can be noted, in particular from the perspective view shown in Figure 1 and from the top view of Figure 8, that the first supporting portions 16 of the back are also rotated, adapting to the curvature of the back to be associated with the frame in order to compose the chair.
  • the crossmember 15 has an oval cross-section that can be seen clearly in Figure 5, with, in a sectional view, parallel sides 25, joined by semicircular elements 26, which form two parallel faces of the same crossmember 15. Joining by welding with each one of the inverted V- shaped elements 12 and with each one of the L-shaped elements 13 occurs at the uppermost face of the two parallel faces.
  • the L-shaped elements 13 are joined by welding along at least one raised portion of the second pair of raised portions 20.
  • the crossmember 15 is substantially rectilinear and therefore the welding of each one of the L-shaped elements 13 occurs at two parallel lines that are formed by the respective second pair of raised portions 20, which are intended for contact with the crossmember 15.
  • the crossmember 15 is not rectilinear but has for example a curvature or a bend in a downward direction that is contoured to the shape of the seat, the weld might still be performed validly in the same regions or along a single raised portion of the second pair of raised portions 20.
  • oval cross-section of the crossmember 15 allows welding the elements on larger regions of contact than in the case of the crossmember with circular cross-section as in known frames, making the weld more effective and durable.
  • each inverted V-shaped element 12 has a reinforcement recess 27 on the inner part of each one of the two rectilinear portions 28 that form respectively a front leg 29 and a rear leg 30 of the chair.
  • the internal surface of the rectilinear portion 28 of each front leg 29a or rear leg 30a of a frame 10a is coupled to the outer surface of the underlying leg, respectively the front leg 29b or the rear leg 30b, of the underlying frame 10b.
  • an angular aperture of the inverted V-shaped elements 12 of approximately 52° is to be preferred; an angle of approximately 109° between the first portion 16 and the second portion 17 is instead to be preferred, again merely by way of example, for the inclination of the L-shaped elements 13.
  • the front legs 29 and the rear legs 30 of the frame 10 form, with their four resting points 33 at the base, a resting area 34, shown in broken lines in Figure 1 , within which every point of the L- shaped elements 13 lies.
  • the back fitted on the L-shaped elements 13 also is such that every point thereof lies within the resting area 34.
  • Each L-shaped element 13 is provided conveniently, at its second portion 17, with a hole 31 for fixing the seat of the chair by means of screws.
  • the back can be associated easily with the frame 10, for example by making it slide from above onto the two first portions 16, so that they enter adapted guides in said back.
  • the frame 10 can be stacked according to two possible stacking methods.
  • the first method is shown in Figure 9 and the resulting configuration is designated by the reference letter A to distinguish it from a different configuration of stacked frames 10, which can be obtained with a second method shown in the subsequent Figures 10 and 1 1 and is designated here by the reference letter B.
  • the frames 10 are superimposed vertically on each other according to the same orientation.
  • the inverted V-shaped elements 12 are inserted into each other and the reinforcement recesses 27, which make the internal surface of the rectilinear portion 28 of each front leg 29a or rear leg 30a mate with the outer surface of the underlying leg, respectively the front leg 29b or the rear leg 30b, ensure stable and aligned stacking of the frames 10.
  • the frames 10, other than with the preceding method are superimposed vertically so that they are alternated with an orientation of 90° of one with respect to the following one.
  • the stability of the stack of frames 10 is determined by the coupling of the internal surface of each front leg 29a or rear leg 30a of the frame 10a with the external surface of the underlying leg, the front one 29b or the rear one 30b, which is the leg of the frame 10b that is arranged with the same orientation and is spaced from the upper frame 10a by an intermediate frame 10a that is rotated by 90°.
  • the legs are formed by an inverted V-shaped element 12 with flattened regions produced by reinforcement recesses 27 on the internal part over the entire length of the legs 29 and 30, the line of the frame 10 is slenderer, as can be seen in particular in the side view of Figure 6, and is aesthetically new with respect to known chairs with U-shaped elements.
  • the frame 10 is also stronger and the stacking possibility is improved.
  • crossmember 15 having an oval cross-section allows not only welding the components at larger regions of contact than would be the case with a circular cross-section, but also makes it possible to save material and to obtain a frame that is lighter and therefore easier to handle and transport than a frame provided with two crossmembers.
  • the invention achieves the intended aim and objects, providing a metallic frame for chairs with tubular elements that is lighter than known frames and therefore can be handled more easily and allows reducing and containing production times as well as production and transport costs.
  • the frame is stable both when in use, provided with a seat and a back, passing anti-tipping tests, and when stacked with other identical frames, according to both configurations A and B. Moreover, the frame has a different visual impact than traditional ones.
  • the materials used may be any according to the requirements and the state of the art.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

L'invention concerne un cadre métallique (10) pour des sièges avec des éléments tubulaires (11), comprenant deux éléments inversés en forme de V (12) qui forment les pieds d'un siège, qui sont parallèles et reliés pratiquement à leur courbure intérieure (14) à une traverse en forme de tige (15), deux éléments en forme de L (13) connectés par la traverse (15) sur laquelle ils sont disposés dans une configuration parallèle de manière à former un support pour le dossier et pour l'assise, respectivement avec leurs premières portions (16) qui sont pratiquement verticales, et leurs secondes portions (17) qui sont pratiquement horizontales.
EP14721520.6A 2013-04-05 2014-04-04 Cadre métallique pour sièges avec éléments tubulaires Active EP2981192B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000084A ITPD20130084A1 (it) 2013-04-05 2013-04-05 Struttura di telaio metallico per sedie ad elementi tubolari
PCT/IB2014/060437 WO2014162297A1 (fr) 2013-04-05 2014-04-04 Cadre métallique pour sièges avec éléments tubulaires

Publications (2)

Publication Number Publication Date
EP2981192A1 true EP2981192A1 (fr) 2016-02-10
EP2981192B1 EP2981192B1 (fr) 2019-03-06

Family

ID=48485329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14721520.6A Active EP2981192B1 (fr) 2013-04-05 2014-04-04 Cadre métallique pour sièges avec éléments tubulaires

Country Status (7)

Country Link
US (1) US20160051055A1 (fr)
EP (1) EP2981192B1 (fr)
JP (1) JP2016514566A (fr)
ES (1) ES2729629T3 (fr)
IT (1) ITPD20130084A1 (fr)
TR (1) TR201907358T4 (fr)
WO (1) WO2014162297A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP1619970S (fr) * 2018-01-11 2018-12-10
JP1619972S (fr) * 2018-01-11 2018-12-10
IT201900020378A1 (it) * 2019-11-05 2021-05-05 Linea Fabbrica S R L Telaio per sedia
USD961953S1 (en) * 2021-05-24 2022-08-30 Menu A/S Dining chair

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610686A (en) * 1969-10-10 1971-10-05 Shelby Williams Ind Cast-aluminum stack chair
DE2035974A1 (de) * 1970-07-20 1972-01-27 Adam Stegner Moebelfabrik U Sa Stapelbare Stuhleinheit
JPS59128259U (ja) * 1983-02-16 1984-08-29 株式会社岡村製作所 積み重ね式椅子
FR2623701B1 (fr) * 1987-12-01 1991-04-12 Simire Chaise a ossature metallique
ITPD20010001U1 (it) * 2001-01-09 2002-07-09 Challenger Gestao E Consultado Struttura di telaio metallico per sedie ad elementi tubolari.
US7770968B2 (en) * 2007-05-09 2010-08-10 Kerstin Bartlmae Stackable chair
JP5184908B2 (ja) * 2008-02-08 2013-04-17 株式会社岡村製作所 肘掛け付き椅子

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014162297A1 *

Also Published As

Publication number Publication date
ITPD20130084A1 (it) 2014-10-06
TR201907358T4 (tr) 2019-06-21
ES2729629T3 (es) 2019-11-05
US20160051055A1 (en) 2016-02-25
EP2981192B1 (fr) 2019-03-06
WO2014162297A1 (fr) 2014-10-09
JP2016514566A (ja) 2016-05-23

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