EP0277098B1 - Joint de porte de four en élastomère ayant la forme d'un cadre fermé ou ouvert - Google Patents

Joint de porte de four en élastomère ayant la forme d'un cadre fermé ou ouvert Download PDF

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Publication number
EP0277098B1
EP0277098B1 EP19880830024 EP88830024A EP0277098B1 EP 0277098 B1 EP0277098 B1 EP 0277098B1 EP 19880830024 EP19880830024 EP 19880830024 EP 88830024 A EP88830024 A EP 88830024A EP 0277098 B1 EP0277098 B1 EP 0277098B1
Authority
EP
European Patent Office
Prior art keywords
profile
protruding
inserts
gasket
metal
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.)
Expired
Application number
EP19880830024
Other languages
German (de)
English (en)
Other versions
EP0277098A2 (fr
EP0277098A3 (en
Inventor
Luigi Bocca
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.)
GIAT Srl
Original Assignee
GIAT Srl
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26327580&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0277098(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from IT2056387U external-priority patent/IT209842Z2/it
Priority claimed from IT2177887U external-priority patent/IT210452Z2/it
Application filed by GIAT Srl filed Critical GIAT Srl
Priority to AT88830024T priority Critical patent/ATE75534T1/de
Publication of EP0277098A2 publication Critical patent/EP0277098A2/fr
Publication of EP0277098A3 publication Critical patent/EP0277098A3/en
Application granted granted Critical
Publication of EP0277098B1 publication Critical patent/EP0277098B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/021—Doors specially adapted for stoves or ranges sealings for doors or transparent panel

Definitions

  • the present invention relates to an improved gasket of elastomer material to be particularly used between a cooking oven opening and the associate door, being in the form of a three-side open frame or of a four-side closed frame.
  • gaskets may be integrally moulded, with corners already formed, but at so high costs that cannot be accepted by oven manufacturers.
  • GB-A-2 113 827 requires to this effect an additional fastener means as an integrally moulded button, thus rendering necessary that each gasket corner is separately moulded to form said button and to embed a hooked metal insert.
  • DE-A-3 509 928 shows a gasket with an inner longitudinal cavity along which metal inserts called “rails” are caused to slip therein until reaching the prefixed corner positions where they are bent to be properly shaped.
  • FR-A-2 553 170 discloses a C-shaped profile at the inside of which the metal inserts are fixed by adhesive, without solving the problem of the butt joint.
  • GB-A-2 106 974 only states that the strip (of gasket) is joined in an end-to-end fashion along one of the straight sides, thus excluding that a butt-joint be positioned at a corner.
  • slits for housing the anchoring inserts are obtained by cutting the gasket profile, with problems of centering the insert therein and the danger of tearing or ripping the gasket, of silicone-based elastomer, by giving rise to a weakened line or preferential direction of continuation of the cutting under stretching, thus rendering necessary the use of adhesive not only to keep the correct position, but also to stop the tearing action.
  • a gasket formed of a tubular profile 1 of elastomer material, preferably silicone rubber, is provided in a known manner with an inner longitudinal cavity 2 and a protruding V--angled flange 4 integrally formed by extrusion.
  • two parallel longitudinal ribs 3 are preferably provided at the side opposite to the flange 4 having the purpose of ensuring a more efficient tightness of the gasket onto the surface of the stationary abutment zone, particularly the front portion or abutment surface 14 of an oven as represented in Fig. 6, while flange 4 is useful for the sealing with the mobile portion surface, particularly the oven door 15.
  • the flange 4 will be directed no matter either to be convergent towards the oven inside or diverging outwardly. In the first instance a better tightness will be obtained as the flange works under pressure, while in the second one the gasket can be considered as "self-cleaning", since the upper side has the function of a gutter to prevent possible dirty or fluids from entering the sealed opening, and the lower side, if any, has the opposite function of helping possible dirty or fluids to drops therefrom.
  • gasket frame is formed of a single profile joined at any point whichever along its perimeter there is no discontinuity of the sealing at the critical areas located at the bent corners.
  • the gasket frame is fastened to the sheet iron surface of oven 14 by means of metal inserts or fits of various type, all provided with a protruding coupling member to be fitted into associate holes 12, 13 formed in the abutment surface 14.
  • a profile stretch, of resilient character, to be preferably established, is obtained by properly arranging the center to center distance between holes 12 of the corner zones and 13 along the longitudinal portions, and designing slightly shorter such a distance at the locations corresponding to the frame fastening. This stretch can be different from a length to another according to the distance between the fastening points, their placement and orientation.
  • corner-radiusing insert members 5 which are L-shaped (see Fig. 3a) and provided with a coupling hook 9 for fitting in holes 12, and metal plate inserts 8 with resilient prongs 9′ for insertion in holes 13. Both these shapes of insert member are accommodated into the inner longitudinal cavity 2 of tubular profile 1 through slots 11 formed by removal of material on the side of the profile opposite to flange 4, at the planar area comprised between the two possible longitudinal ribs 3.
  • the distance between slots 11 is a function of the space between holes 12, 13 and the desired stretch, as stated above.
  • Their shape will be such as to allow the stretched fitting of the inserts when considering the resilient mechanical features of the elastomer material adopted and the size of the members themselves to be inserted.
  • the metallic parts could be bonded to the profile by a suitable adhesive, although not necessary.
  • the butt joint to have the closed profile of Fig. 1 may be formed at any location and, if in proximity of a corner, according to the invention a bent insert member 6 (Fig. 3b) with an elongated leg is advantageously used.
  • the longer leg of insert member 6 projects from one end of the profile to which the other end is joined for causing the frame to close itself.
  • Bonding is provided by a suitable adhesive, especially silicone-based, as well as by the metal insert being fitted to the profile inner walls, and mechanical resistance resulting from the portion of adhesive mass polymerized in the gaps formed between some notches 10 which are provided on the longer leg of insert member 6 and the inner walls of profile.
  • the radiused corners of the frame and fastening at these zones are provided by bent metal insert members 5, 6 which at the same time give the profile an adeguate stretch along its axial direction, and the gasket fastening also orthogonally to the abutment surface 14 is provided by the metal plate inserts 8 which are also fitted into the slots 11 formed on the rear side of the profile (see Figs. 4, 4a, 4b).
  • the open-shape or three-side frame (Fig. 2) is obtained making similarly use of only two bent corner inserts 5, of two elongated coupling inserts 7 (Figs. 5, 5a) and possibly, to improve the fastening in a perpendicular direction, of some metal plate inserts 8.
  • the coupling insert 7 is fitted with its elongated portion into cavity 2 of the tubular profile 1 from which it protrudes with a hooked tab 9a which, contrary to the coupling hooks 9 associate to insert members 5 and 6, extends longitudinally while reamaining on the same plane of the insert member with no need of slots 11.
  • the frame gasket is of a single piece and there is, if any, only one butt joint with possible rubber-metal contact. Finally this gasket can be easily and readily mounted, as well as removed from its seat with likewise easiness and rapidity to be cleaned, thus ensuring very good hygienic conditions in addition to an ever efficient thightness.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)

Claims (6)

1. Joint en forme de cadre en matériau élastomère, particulièrement destiné à des portes de four de cuisson, formé d'un profilé tubulaire (1) comportant une cavité longitudinale intérieure (2) et ayant une bride périphérique continue (4), faisant saillie à l'avant, avec un seul joint en bout, au plus, et des encarts métalliques d'accouplement (5, 6, 8) disposés pour venir s'engager sous étirement dans des orifices associés (12, 13) d'une surface de butée (14) de la tôle d'acier, lesdits encarts d'accouplement étant placés à l'intérieur du profilé tubulaire (1) dont ils font saillie vers l'extérieur, partiellement à travers des fentes ou orifices (11) avec des parties en saillie (9, 9′), caractérisé par le fait que lesdites fentes (11) sont obtenues en retirant le matériau dans la partie arrière du profilé (1) et par le fait que leur dimension dans un plan perpendiculaire à l'axe longitudinal du profilé tubulaire (1) est plus grande que la dimension correspondante de la partie en saillie (9, 9′) de l'encart métallique contenu, de sorte qu'au moins un bord de ladite fente (11) n'est pas en contact avec ladite partie en saillie.
2. Joint selon la revendication 1, dans lequel lesdits encarts métalliques (5, 6) comportent des crochets d'accouplement (9) faisant saillie desdits fentes (11) à proximité des zones des angles dudit cadre afin de pénétrer dans des orifices (12) de la surface de la tôle d'acier (14), et en ce qu'ils ont la forme d'un grand L arrondi.
3. Joint selon la revendication 2, dans lequel lesdits encarts en forme de L (6) comprennent deux pattes de longueurs différentes, dissymétriques par rapport au crochet d'accouplement (9) pour venir en prise dans les régions des angles au voisinage desquelles un joint en butée est prévu, la patte la plus longue dudit encart (6) se trouvant le long du côté de la jonction.
4. Joint selon l'une des revendications 2 ou 3, dans lequel lesdits encarts métalliques d'accouplement (8) intercalés entre ceux (5, 6) des zones des angles pour fixation dans une direction perpendiculaire à la surface de butée (14) sont constitués d'une plaque métallique allongée et d'ergots élastiques en saillie (9′) destinés à pénétrer à l'intérieur desdits orifices (13).
5. Joint selon la revendication 1, formé de trois côtés seulement d'un profilé (1) sans aucun joint en bout, dans lequel chaque zone des deux extrémités libres dudit profilé est fixée à la surface de butée (14) grâce à des encarts d'accouplement supplémentaires (7) faisant saillie longitudinalement de l'intérieur (2) du profilé tubulaire (1) et portant des languettes crochues (9a) orientées longitudinalement.
6. Joint selon au moins l'une des revendications précédentes, dans lequel la face arrière du profilé (1) opposée à ladite bride périphérique en saillie (4) porte deux nervures parallèles longitudinales (3) définissant latéralement une bande du profilé (1) dans laquelle lesdites fentes (11) sont pratiquées.
EP19880830024 1987-01-21 1988-01-20 Joint de porte de four en élastomère ayant la forme d'un cadre fermé ou ouvert Expired EP0277098B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88830024T ATE75534T1 (de) 1987-01-21 1988-01-20 Geschlossener oder offener rahmen fuer eine backofentuerdichtung aus elastomermaterial.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT2056387U 1987-01-21
IT2056387U IT209842Z2 (it) 1987-01-21 1987-01-21 Cornice raccordata di tenuta in elastomero, in particolare guarnizioni per porte di forni di cottura.
IT2177887U 1987-06-11
IT2177887U IT210452Z2 (it) 1987-06-11 1987-06-11 Guarnizione perfezionata a cornice chiusa o aperta in materiale elastomero per porte di forni di cottura.

Publications (3)

Publication Number Publication Date
EP0277098A2 EP0277098A2 (fr) 1988-08-03
EP0277098A3 EP0277098A3 (en) 1988-12-28
EP0277098B1 true EP0277098B1 (fr) 1992-04-29

Family

ID=26327580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880830024 Expired EP0277098B1 (fr) 1987-01-21 1988-01-20 Joint de porte de four en élastomère ayant la forme d'un cadre fermé ou ouvert

Country Status (3)

Country Link
EP (1) EP0277098B1 (fr)
DE (1) DE3870467D1 (fr)
ES (1) ES2030899T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131009C2 (de) * 2001-06-27 2003-07-03 Bsh Bosch Siemens Hausgeraete Haushaltsgerät, insbesondere Backofen

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730541B1 (fr) * 1995-02-10 1997-05-09 Gessil Ensemble de jointoiement a plat
EP0757209B1 (fr) 1995-08-04 2000-08-02 POSA S.p.A. Joint d'étancheité en élastomère, en particulier pour porte de four de cuisson
ES2154380T3 (es) 1996-12-18 2001-04-01 Posa S P A Junta de estanquidad de elastomero adecuada en particular para puertas de hornos de cocina.
ES2142715B1 (es) * 1997-02-12 2000-11-16 Alberto Manero S A Junta en forma de marco de material elastomero, especialmente para puertas de hornos de cocina.
ES2170468T3 (es) 1998-10-07 2002-08-01 Posa S P A Junta elastomerica de estanqueidad para hornos de coccion.
EP1147342B1 (fr) 1999-10-21 2003-12-17 G.I.A.T. S.p.A. Joint d'etancheite elastomere, concu notamment pour des portes de fours domestiques ou pour des appareils menagers en general
TR200201953T2 (tr) 2000-02-22 2007-01-22 G.I.A.T. S.P.A. Ev tipi pişirme fırınları için contalı tezgah kapağı çerçevesi.
DE102004020799A1 (de) 2004-04-28 2005-11-24 Rehau Ag + Co. Dichtungseinrichtung
DE102004032931A1 (de) * 2004-07-07 2006-02-02 BSH Bosch und Siemens Hausgeräte GmbH Backofen mit einer Backofentürdichtung
EP2035752B1 (fr) * 2006-07-04 2015-10-14 Arçelik Anonim Sirketi Four

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106974B (en) * 1981-10-06 1985-08-29 Silicone Altimex Ltd Door seal
GB2113827B (en) * 1982-01-23 1985-01-23 Silicone Fabrications Limited Stretch gaskets
FR2553170B1 (fr) * 1983-10-11 1987-10-30 Gerland Joint d'etancheite en elastomere constitue d'une seule longueur de profile
DE3509928C2 (de) * 1985-03-19 1995-05-18 Bosch Siemens Hausgeraete Verfahren zur Herstellung einer elastischen Dichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131009C2 (de) * 2001-06-27 2003-07-03 Bsh Bosch Siemens Hausgeraete Haushaltsgerät, insbesondere Backofen

Also Published As

Publication number Publication date
ES2030899T3 (es) 1992-11-16
EP0277098A2 (fr) 1988-08-03
EP0277098A3 (en) 1988-12-28
DE3870467D1 (en) 1992-06-04

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