EP1378190A1 - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- EP1378190A1 EP1378190A1 EP03425434A EP03425434A EP1378190A1 EP 1378190 A1 EP1378190 A1 EP 1378190A1 EP 03425434 A EP03425434 A EP 03425434A EP 03425434 A EP03425434 A EP 03425434A EP 1378190 A1 EP1378190 A1 EP 1378190A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inserts
- chair
- structure according
- backrest
- metallic
- 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
Links
Images
Classifications
-
- 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
-
- 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
- A47C3/021—Rocking chairs having elastic frames
- A47C3/023—Rocking chairs having elastic frames made of tubular material
-
- 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
- A47C5/08—Tubular chairs having sheathed tubes; Adaptation of sheathed tubes thereto
Definitions
- the present invention relates to a chair.
- a chair has been provided in which the seat and backrest are produced individually by overmolding plastics material on supporting elements made of metallic material.
- the components are provided in the finished state simply with a single process, which is the molding process, and are assembled simply by interlocking.
- the structure allows the components to be packed in the disassembled state, with a great reduction in overall dimensions for storage and transport.
- the aim of the present invention is to provide a chair that by utilizing the technique of overmolding on metallic supporting elements has characteristics of mechanical strength that are differentiated by regions, such as adequate rigidity at the legs and flexibility at the backrest.
- an object of the present invention is to provide a chair whose structure is substantially weatherproof and is therefore suitable both for indoor use and for outdoor use or in any case in environments with a high chemical aggression factor.
- Another object of the present invention is to provide a chair whose structure allows a considerable reduction of the thicknesses of the various regions, with consequent savings of material.
- Another object of the present invention is to provide a chair that can be obtained in the finished state simply by means of the molding process.
- Another object of the present invention is to provide a chair that can be manufactured with known equipment and technologies.
- a chair having a structure provided with internal supporting inserts made of metallic material, characterized in that said internal supporting inserts made of metallic material are mutually connected so as to form a frame that is completed by internal inserts made of plastics material, the entire assembly being enclosed in an overmolded cladding produced by injecting thermoplastic material, which also forms the contact portions of the seat and backrest.
- the internal supporting inserts made of metallic material are combined and cooperate with internal inserts made of plastics material that are mutually differentiated by regions in their mechanical strength features, the entire assembly being enclosed in an overmolded cladding made of plastics material, which also forms the contact portions of the seat and backrest.
- a chair having the structure according to the invention is generally designated by the reference numeral 10 in a first embodiment.
- the chair 10 is composed of two components, which are mutually reversibly associated by interlocking as described hereinafter.
- a first component 11 comprises a seat 12 and two front legs 13, and a second component 14 comprises a backrest 15 and two rear legs 16.
- the two components 11 and 14 are each formed by injection overmolding of a cladding, respectively designated by the reference numerals 17 and 18, made of thermoplastic material, such as for example polypropylene, over tubular internal supporting inserts made of metallic material that will be described in greater detail hereinafter.
- a cladding respectively designated by the reference numerals 17 and 18, made of thermoplastic material, such as for example polypropylene, over tubular internal supporting inserts made of metallic material that will be described in greater detail hereinafter.
- the first component 11 comprises, in this case, a tubular insert 19 made of shaped steel for the perimeter of the seat 12 and tubular steel inserts 20 for the front legs 13, which are closed at their lower free ends by inserts made of plastics material 21 (so as to prevent the cladding 17 from entering the inserts 20 during molding).
- the free ends 22 of the tubular insert 19 (which are arranged at the rear) are instead arranged so as to remain open in order to constitute the receptacles for the insertion of tangs 23 that protrude from the second component 14 of the chair 10.
- the second component 14 comprises in this case tubular inserts 24 made of steel for the rear legs 16, which are closed at their lower free ends by inserts 25 made of plastics (so as to prevent the cladding 18 from penetrating in the inserts 24 during molding).
- Hole plugging inserts 26 made of plastics are instead inserted in the upper ends of the tubular inserts 24 and also extend inside the backrest 15.
- Elongated inserts 27 made of plastics, such as for example nylon, are overmolded on these inserts 26, are shaped so as to taper toward their ends along the respective sides 28 of the backrest 15, and are also embedded in the cladding 18.
- the inserts 27 conveniently have different mechanical strength characteristics with respect to the metallic inserts 24, giving elasticity to the backrest 15, which can thus be flexed backward (like a cantilevered leaf spring) in order to adapt to the movements of the back of the user.
- the backrest 15 has, between the upper ends of the rear legs 16, a straight metallic insert 29 from which, adjacent to the ends, perpendicular tabs 30 protrude which constitute the cores of the tangs 23.
- the insert 29, with the tabs 30, is enclosed by an overmolded cladding 31 (insert) made of plastics, such as for example nylon, which except for the regions of the tabs 30 is further enclosed by the cladding 18.
- cladding 31 insert
- plastics such as for example nylon
- the internal metallic inserts designated by the reference numerals 19, 20, 24 and 29 constitute as a whole a frame 50 that is completed by the plastic inserts 21, 25, 26, 27 and 31.
- the claddings 31 and 18 form tabs 32 that are arranged laterally adjacent to the tangs 23 for resting against the rear edge 33 of the seat 12.
- the cladding 31 in the region of the tabs 30 avoids metal-on-metal contact between the tangs 23 and the respective receptacles formed by the ends of the tubular insert 19 and allows a better interlocking between the parts by way of the adaptability of the plastic material.
- a second embodiment of a chair having the structure according to the invention is designated by the reference numeral 110 in Figures 9 to 11.
- the supporting internal inserts made of metallic material here designated respectively by the reference numerals 119, 120, 124 and 129, are mutually connected so as to form a single supporting insert 150 to be inserted in a mold.
- a first insert 119 forms the seat 112
- second inserts 120 form the front legs 113
- third inserts 124 form the rear legs 116
- a fourth insert 129 completes the seat 112, connecting the inserts 124 for the rear legs.
- Hole plugging inserts 126 made of plastics material are inserted in the upper free ends 151 of the single metallic supporting insert 150 and, in the same manner described for the first embodiment of the chair 10 according to the invention, also extend within the corresponding backrest 115, improving its backward flexural elasticity.
- External inserts 161 made of plastics for resting on the ground are instead inserted in the lower free ends 152 of the single supporting insert 150.
- Such internal inserts made of metallic material 119, 120, 124 and 129 are connected by welding.
- the single metallic supporting insert 150 and the internal hole plugging inserts 126 made of plastics are enclosed in a single overmolded cladding 117, which also forms the contact portions of the seat 112 and of the backrest 115, so as to form a monolithic chair.
- the chair in fact has a structure provided with internal supporting inserts 19, 20, 24, 29, 119, 120, 124, 129 that are mutually connected so as to form a frame 50, 150, which is completed by internal inserts 21, 25, 26, 27, 31, 126 made of plastics.
- the chair has a structure provided with internal supporting inserts 19, 20, 24, 29 made of metallic material, which are combined and cooperate with internal inserts 21, 25, 26, 27, 31 made of plastics, which are mutually differentiated by regions in their mechanical strength features.
- the chair has mechanical strength characteristics that are differentiated by regions, such as adequate rigidity at the legs and flexibility at the backrest.
- the components are provided in the finished state simply with a single process, which is the molding process, and are simply assembled by interlocking.
- the structure described and exemplified with the first embodiment allows pluralities of the two components to be mutually packed, in the disassembled state prior to final assembly, with a considerable reduction of overall dimensions for storage and transport.
- the second embodiment instead allows to obtain a monolithic chair simply and cheaply, by inserting in a mold a single metallic insert and by means of a subsequent single injection overmolding operation.
- the materials may be any according to requirements.
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
Description
Claims (16)
- A chair with a structure provided with internal supporting inserts (19, 20, 24, 29) made of metallic material, characterized in that said internal supporting inserts (19, 20, 24, 29, 119, 120, 124, 129) made of metallic material are mutually connected so as to form a frame (50, 150) that is completed by internal inserts (21, 25, 26, 27, 31, 126) made of plastics material, the entire assembly being enclosed in an overmolded cladding (17, 18, 117) produced by injecting thermoplastic material, which also forms the contact portions of the seat (12, 112) and backrest (15, 115).
- The chair provided with the structure according to claim 1, characterized in that said internal supporting inserts (19, 20, 24, 29) made of metallic material are combined and cooperate with said internal inserts (21, 25, 26, 27, 31) made of plastics material, which are mutually differentiated by regions in their mechanical strength features, the entire assembly being enclosed by an overmolded cladding (17, 18) made of plastics material, which also forms the contact portions of the seat (12) and backrest (15).
- The chair according to claims 1 and 2, characterized in that it is composed of two components that are mutually associated reversibly by interlocking, a first component (11) comprising the seat (12) and two front legs (13) and a second component (14) comprising the backrest (15) and the rear legs (16).
- The chair provided with the structure according to one or more of claims 1 to 3, characterized in that said two components (11, 14) are each formed by overmolding a cladding (17, 18) made of plastics material over internal supporting inserts (19, 20, 24, 29) made of metallic material combined with internal inserts (21, 25, 26, 27, 31) made of plastics material.
- The chair provided with the structure according to one or more of the preceding claims, characterized in that a first component (11) comprises a tubular insert (19) made of contoured metal for the perimeter of the seat (12) and tubular inserts (20) made of metal for said front legs (13) which are closed at their lower free ends by inserts (21) made of plastics material.
- The chair provided with the structure according to one or more of the preceding claims, characterized in that the free ends (22) of said metallic insert (19) for the perimeter of the seat (12) that are arranged at the rear are arranged so as to remain open in order to constitute the receptacles for the insertion of tangs (23) that protrude from said second component (14) of the chair (10).
- The chair provided with the structure according to one or more of the preceding claims, characterized in that said second component (14) comprises tubular inserts (24) made of metal for the rear legs (16), which are closed at their lower free ends by inserts made of plastics material (25).
- The chair provided with the structure according to one or more of the preceding claims, characterized in that hole plugging inserts (26) made of plastics are inserted in the upper ends of said tubular inserts (24) of said second component and also extend inside the backrest (15).
- The chair provided with the structure according to one or more of the preceding claims, characterized in that elongated inserts (27) made of plastics material are overmolded on said hole plugging inserts (26) of said metallic tubular inserts (24), are shaped so as to taper toward their ends along the respective sides (28) of said backrest (15), and are also embedded in said cladding (18) thereof, said elongated inserts (27) giving elasticity to said backrest (15).
- The chair provided with the structure according to one or more of the preceding claims, characterized in that said backrest (15) has, between the upper ends of the rear legs (16), a metallic insert (29) from which perpendicular tabs (30) protrude adjacent to the ends, said tabs constituting the cores of said tangs (23), said insert (29) with said tabs (30) being enclosed by an overmolded cladding (31) made of plastics material which, except for the regions of the tabs (30), is further enclosed by said cladding (18).
- The chair provided with the structure according to one or more of the preceding claims, characterized in that said claddings (31, 18) of said backrest (15) form tabs (32) that are laterally adjacent to the tangs (23) for contact against a rear edge (33) of said seat (12).
- The chair provided with the structure according to claim 1, characterized in that said internal supporting inserts (119, 120, 124, 129) made of metallic material are mutually connected so as to form a single metallic supporting insert (150) to be inserted in a mold.
- The chair provided with the structure according to claims 1 and 12, characterized in that hole plugging inserts (126) made of plastics material are inserted in the upper free ends (151) of said single metallic supporting insert (150) and also extend inside the backrest (115).
- The chair provided with the structure according to claims 1, 12 and 13, characterized in that external inserts (161) made of plastics for resting on the ground are inserted in the lower free ends (152) of said single metallic supporting insert (150).
- The chair provided with the structure according to claims 1 and 12 to 14, characterized in that said internal supporting inserts (119, 120, 124, 129) made of metallic material are connected by welding.
- The chair provided with the structure according to claims 12 to 15, characterized in that said single metallic supporting insert (150) and said internal hole plugging inserts (126) made of plastics material are enclosed in a single overmolded cladding (117), which also forms the contact portions of the seat (112) and the backrest (115), forming a monolithic chair.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD20020177 | 2002-07-02 | ||
IT2002PD000177A ITPD20020177A1 (en) | 2002-07-02 | 2002-07-02 | CHAIR STRUCTURE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1378190A1 true EP1378190A1 (en) | 2004-01-07 |
EP1378190B1 EP1378190B1 (en) | 2006-10-04 |
Family
ID=29720171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03425434A Expired - Lifetime EP1378190B1 (en) | 2002-07-02 | 2003-07-01 | Chair |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1378190B1 (en) |
AT (1) | ATE341251T1 (en) |
DE (1) | DE60308766T2 (en) |
ES (1) | ES2271518T3 (en) |
IT (1) | ITPD20020177A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2462496A (en) * | 2008-08-12 | 2010-02-17 | Orangebox Ltd | A chair with means to allow for an optimal working position |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1319565A (en) * | 1962-04-09 | 1963-03-01 | Chair frame | |
FR1417682A (en) * | 1964-12-16 | 1965-11-12 | Mullca S A | Furniture such as chair |
WO1993004613A1 (en) * | 1991-09-11 | 1993-03-18 | Perry Charles O | High density stacking flex armchair |
DE19622577A1 (en) * | 1996-02-21 | 1997-08-28 | Heinz Gumpert | Tubular metal chair with frame made in three pieces |
EP0914786A2 (en) * | 1997-11-04 | 1999-05-12 | Sedus Stoll AG | Tubular frame for furniture and method of manufacturing the same |
-
2002
- 2002-07-02 IT IT2002PD000177A patent/ITPD20020177A1/en unknown
-
2003
- 2003-07-01 DE DE60308766T patent/DE60308766T2/en not_active Expired - Lifetime
- 2003-07-01 ES ES03425434T patent/ES2271518T3/en not_active Expired - Lifetime
- 2003-07-01 EP EP03425434A patent/EP1378190B1/en not_active Expired - Lifetime
- 2003-07-01 AT AT03425434T patent/ATE341251T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1319565A (en) * | 1962-04-09 | 1963-03-01 | Chair frame | |
FR1417682A (en) * | 1964-12-16 | 1965-11-12 | Mullca S A | Furniture such as chair |
WO1993004613A1 (en) * | 1991-09-11 | 1993-03-18 | Perry Charles O | High density stacking flex armchair |
DE19622577A1 (en) * | 1996-02-21 | 1997-08-28 | Heinz Gumpert | Tubular metal chair with frame made in three pieces |
EP0914786A2 (en) * | 1997-11-04 | 1999-05-12 | Sedus Stoll AG | Tubular frame for furniture and method of manufacturing the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2462496A (en) * | 2008-08-12 | 2010-02-17 | Orangebox Ltd | A chair with means to allow for an optimal working position |
Also Published As
Publication number | Publication date |
---|---|
ES2271518T3 (en) | 2007-04-16 |
DE60308766T2 (en) | 2007-08-16 |
ATE341251T1 (en) | 2006-10-15 |
DE60308766D1 (en) | 2006-11-16 |
EP1378190B1 (en) | 2006-10-04 |
ITPD20020177A1 (en) | 2004-01-02 |
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