EP0859196B1 - Rahmenförmige Dichtung aus elastomerem Material, insbesondere für Ofentüren - Google Patents

Rahmenförmige Dichtung aus elastomerem Material, insbesondere für Ofentüren Download PDF

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Publication number
EP0859196B1
EP0859196B1 EP97203559A EP97203559A EP0859196B1 EP 0859196 B1 EP0859196 B1 EP 0859196B1 EP 97203559 A EP97203559 A EP 97203559A EP 97203559 A EP97203559 A EP 97203559A EP 0859196 B1 EP0859196 B1 EP 0859196B1
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EP
European Patent Office
Prior art keywords
tube
joint
joint according
cuts
shaped profile
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 - Lifetime
Application number
EP97203559A
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English (en)
French (fr)
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EP0859196A1 (de
Inventor
Arturo Lorenzo Anza
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Individual
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Individual
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Publication date
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Publication of EP0859196A1 publication Critical patent/EP0859196A1/de
Application granted granted Critical
Publication of EP0859196B1 publication Critical patent/EP0859196B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 refers to an elastomeric material frame-shaped joint, especially for oven doors.
  • the purpose of the joint is to seek insulation of the inside chamber of the oven with regard to the outside when said oven door is, naturally, closed. In this way, mainly leakage of the heat produced inside the inside chamber will be prevented.
  • the joint of the invention will preferably be fixed to the frame corresponding to the mouth of the oven where the respective door is coupled by means of some hinges or the like. Therefore, the joint will be fixed to the frame by means of some coupling means.
  • the object of the invention is essentially centered on the connecting structure between the coupling elements and the joint itself, the joint and the coupling elements finally forming a single-piece body.
  • the joint of the invention can also be installed in the mouth of different containers that include a cover to close them and to insulate them from the outside.
  • joints made out of an elastomeric material frame based on a tube-shaped profile that defines a longitudinal cavity and a flange that emerges from one of its surfaces, are known.
  • This type of joints is applied to the door or to the surface against which the door abuts, in such a way that the door forms a frame all along the periphery of the door or, at least, along a substantial part of said periphery.
  • the joint is applied along the four sides of said opening or, alternately, along only one part of said sides, for example, along the top side and the two vertical sides, which are the ones that perhaps require better leak-tightness to prevent the leakage of heat and steam from the oven.
  • British patent application GB-A-2106974 represents the closest prior art. This document describes a joint in accordance with the above mentioned characteristics, where the joint remains placed upon the abutment surface. This document proposes the use of a simple elongated cut to allow the hook parts of the coupling elements to emerge towards the outside.
  • a disadvantage of the system described in GB-A-2106974 is that upon using a cut made by a simple elongated cut and without any type of particular ending, it is relatively easy for the material to tear, right in the areas of the ends of the cut, the same stretching out, which can give rise to a detachment of the coupling element from the tube-shaped profile or breakage of the profile itself, during assembly of the coupling elements on the tube-shaped element as well as once the joint is mounted upon the door or corresponding abutment surface. Deterioration of the leak-tightness that the joint must produce by the elevation of the lips resulting from the cut over the hook emerging outside may also be produced.
  • EP-A-0277098 showed another conventional system, but instead of the simple elongated cuts as the ones mentioned above, some elongated grooves or notches with a specific width, that is greater than the corresponding width of the hook part that must emerge through said notches, have been provided for.
  • EP-A-0277098 also considers the possibility of using oval holes. The holes as well as the notches are established by means of eliminating the material of the wall of the tube-shaped profile, thus allowing the hook parts to emerge with a certain play.
  • notches or holes made by means of eliminating material may imply certain advantages with regard to the solution based on simple cuts, since a better distribution of stress in the ends of the notches is obtained. This contributes to preventing the elastic material from tearing in said ends. In this way, the above cited disadvantages with regard to GB-A-2106974 are at least partially avoided.
  • EP-A-0851177 which is a document according to Art. 54(3) EPC, proposes an elastomeric frame-shaped joint, especially for oven doors, that basically consists of a tube-shaped profile that will be fixed to a rectangular frame preferably on three of its sides, said frame corresponding to the mouth of a conventional oven.
  • the fourth side of the rectangular frame normally remains free in order to allow jointed coupling of the respective door through which one will have access to the inside chamber of the oven.
  • the frame of the oven could have any other shape.
  • the cuts disclosed in EP-A-0851177 give rise to a small overlap that will be advantageously glued to the cited base of the respective coupling element once the same has been installed in place and comprise a center part and two end parts where the cuts have a change of path of at least 90o.
  • the shapes of the cuts disclosed in EP-A-0851177 are limited to just one basic configuration i.e. to a configuration in which two arched end portions are connected by an elongated center portion extending archedly to the inside of the overlap.
  • the present invention provides new advantageous cuts of the joint to facilitate the fixing of the intermediate coupling means, said cuts having different structures according to all of which all of which the elongated center part of the cuts defined by two outwardly inclined straight profiles that converge in a short center profile, as recited in the characterizing portion of claim 1 of the present specification.
  • Embodiments of the invention are defined in the dependent claims.
  • the tube-shaped profile may have two ends placed in order to be connected. If they are connected, the profile defines a closed frame.
  • the elastomeric material of the profile may be silicone or a material with similar characteristics.
  • Figure 1 is a perspective view of an elastomeric material frame-shaped joint, especially for oven doors, including elements for coupling thereof to the mouth of an oven.
  • Figure 2a is a perspective view of one part of a prior art joint as disclosed in EP-A-0851177, showing mainly a cut through which a coupling element connected to the joint to facilitate fixing thereof to the mouth of an oven is introduced. The cut gives rise to an overlap that is collapsed upward.
  • Figure 2b is a view corresponding to figure 2a where the overlap corresponding to the cut is placed in a coplanar way with the wall of the joint where said cut has been made.
  • Figure 3 is a perspective view of another joint that has a section different from the one shown in the previous figures. Aside from the cited coupling elements, there are others that are connected to the ends of the joint.
  • Figure 4 is a schematic view of an oven that includes the joint of the invention.
  • Figure 5 is a perspective view of a coupling element that forms an integral part of the assembly of the joint of the invention.
  • Figures 6 to 13 are representations of different cuts having shapes being derivable from EP-A-0851177 in a wall of the tube-shaped joint.
  • Figures 14 and 15 show a cut according to a first embodiment of the invention.
  • Figures 16 and 17 show a cut according to a second embodiment of the invention.
  • the elastomeric material frame-shaped joint especially for oven doors comprises a tube-shaped profile (1, 1'), that in principle has a front surface (2), a rear surface (3), a longitudinal canal or cavity (4), as well as a flange that originates from the rear surface (3) and that may be tube-shaped (5), as represented in figures 1 and 2 or simply solid made from a fin (6) (see figure 3).
  • the flanges (5) and (6) finish off in a longitudinal lip (7) or (8) that participates in the tightness of a door (9) of the oven (10) when the cited door is closed.
  • the joint is coupled to three of the four sides of a rectangular frame (11) corresponding to the mouth of the oven (10), leaving the fourth side free to facilitate jointed coupling of the door (9).
  • the joint includes several coupling elements: some intermediate ones (12) and other end elements (13).
  • the former comprise a strip or base (14) and a hook (15), both forming a single-piece body.
  • the end elements (13) also comprise a strip or base (16) and a hook (17).
  • the end coupling elements (13) will be simply tightly introduced through the longitudinal canal (4), the strip (16) of the cited elements (13) also gluing to the inside surface of the front wall (20). The corresponding hook (17) will then remain arranged outside.
  • the joint is normally installed on three of the four sides of the frame, it could also be installed on four sides, whereby, said joint would become a closed ring, whose ends would be connected by thermo-sealing or another type of welding, then omitting the end coupling elements (13).
  • the joint may have any closed or open contour.
  • Said cuts comprise an elongated center part (24) connected to two end parts (25) where the cuts have a change of path of at least 90o.
  • the end parts of some cuts have an arched and semicircular shape and also a shape determined by different straight sections.
  • the elongated center part is in some cases straight and in other cases it has different breaks.
  • the center part has a marked break (26) that is introduced towards the inside of the corresponding overlap.
  • the center part of the cuts has an arched break (27) that is also introduced towards the inside of the overlap limited by the respective cut.
  • Figures 14 to 17 show embodiments of the present invention where the center parts of the cuts comprise two inclined sections (28) that are connected by means of a center curvi-concave (29) or curvi-convex (30) section, have been represented.
  • the coupling elements (12) are installed in correspondence with the angular corners of the frame (11) of the oven (10), said elements (12) forming corner sections (31) in the joint.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Seal Device For Vehicle (AREA)

Claims (17)

  1. Aus Elastomer bestehende, rahmenförmige Abdichtung, insbesondere für Herdtüren, die umfasst:
    ein röhrenförmiges Profil (1, 1') mit einer vorderen Fläche (2), mit einer hinteren Fläche (3), mit wenigstens einem Längshohlraum (4), mit wenigstens einem Abdichtungsflansch (5 oder 6), der sich an der hinteren Fläche (3) entlang erstreckt, und mit wenigstens zwei Einschnitten (18) in der vorderen Fläche (2), wobei das röhrenförmige Profil aus einem fortlaufenden Körper mit zwei Enden besteht;
    eine Vielzahl von Anbringungselementen (12), die durch Dehnen in Löchern (21) angebracht werden, die in einer Fläche ausgebildet sind, an der das röhrenförmige Profil angebracht wird, wobei die Anbringungselemente (12) aus einer Basis (14), die im Inneren des Längshohlraums angeordnet wird, und wenigstens einem länglichen Hakenteil (15) bestehen, der sich durch den entsprechenden Einschnitt (18) hindurch nach außen erstreckt; dadurch gekennzeichnet, dass:
    die Einschnitte einen länglichen Mittelteil (24) haben, der in den entsprechenden Endteilen (25) endet, an denen die Einschnitte eine Wegänderung von wenigstens 90° aufweisen, wobei die Einschnitte entsprechende Überlappungen (19) bilden;
    und dadurch, dass der längliche Mittelteil (24) der Einschnitte durch zwei nach außen geneigte gerade Profile (28) gebildet wird, die in einem kurzen mittleren Profil (29, 30) zusammenlaufen.
  2. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei dem mittleren Profil um ein mittleres, gekrümmt-konkaves Profil (29) handelt, das in Richtung des Inneren der Überlappung eingeführt wird.
  3. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei dem mittleren Profil um ein mittleres, gekrümmt-konvexes Profil (30) handelt.
  4. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Endteile der Einschnitte eine Bogenform haben.
  5. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Endteile der Einschnitte durch ein gerades Profil gebildet werden.
  6. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Endteile der Einschnitte durch gerade Profile gebildet werden.
  7. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei dem Elastomermaterial der Abdichtung um Silikon handelt.
  8. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass das röhrenförmige Profil (1) zwei Enden aufweist, die zum Verbinden vorbereitet sind.
  9. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Enden des röhrenförmigen Profils verbunden sind.
  10. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Anbringungselement (13) in jedem Ende des röhrenförmigen Profils angeordnet ist.
  11. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass das röhrenförmige Profil (1) wenigstens zwei Eckenprofile (31) und ein Anbringungselement (12) enthält, das in jedem der Eckenprofile (31) angeordnet ist.
  12. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass derAbdichtungsflansch aus einem einfachen kompakten Flansch (6) besteht, der sich in einem Winkel zu der hinteren Fläche (3) von einer der Kanten der hinteren Fläche aus erstreckt.
  13. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abdichtungsflansch aus einem hohlen Flansch besteht, der zwei Seitenwände (5) umfasst, die an ihren Enden verbunden sind, wobei eine der Wände von einer Kante der hinteren Fläche des röhrenförmigen Profils ausgeht und die andere Wand von der anderen hohlen Kante der hinteren Fläche.
  14. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass das röhrenförmige Profil an seiner vorderen Fläche wenigstens einen Steg (22 oder 23) enthält, der sich in Längsrichtung an dem röhrenförmigen Profil entlang erstreckt.
  15. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass das röhrenförmige Profil an seiner Vorderkante zwei Rippen (22 und 23) enthält, die sich an dem röhrenförmigen Profil (1) entlang erstrecken.
  16. Abdichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Wegänderung wenigstens 135° beträgt.
  17. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Wegänderung wenigstens 180° beträgt.
EP97203559A 1997-02-12 1997-11-14 Rahmenförmige Dichtung aus elastomerem Material, insbesondere für Ofentüren Expired - Lifetime EP0859196B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES009700284A ES2142715B1 (es) 1997-02-12 1997-02-12 Junta en forma de marco de material elastomero, especialmente para puertas de hornos de cocina.
ES9700284 1997-02-12

Publications (2)

Publication Number Publication Date
EP0859196A1 EP0859196A1 (de) 1998-08-19
EP0859196B1 true EP0859196B1 (de) 2003-02-05

Family

ID=8298215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97203559A Expired - Lifetime EP0859196B1 (de) 1997-02-12 1997-11-14 Rahmenförmige Dichtung aus elastomerem Material, insbesondere für Ofentüren

Country Status (4)

Country Link
EP (1) EP0859196B1 (de)
AT (1) ATE232288T1 (de)
DE (1) DE69718891T2 (de)
ES (1) ES2142715B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101800754B1 (ko) 2016-06-17 2017-11-24 린나이코리아 주식회사 오븐 캐비넷 가스켓

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935836C2 (de) * 1999-07-29 2001-08-09 Bsh Bosch Siemens Hausgeraete Gargerät mit einem Dichtungsprofil und entsprechendes Dichtungsprofil
DE102004032931A1 (de) * 2004-07-07 2006-02-02 BSH Bosch und Siemens Hausgeräte GmbH Backofen mit einer Backofentürdichtung
DE202006009314U1 (de) * 2006-06-12 2006-08-24 Rehau Ag + Co. Versteifungselement für Hohlkammerdichtungsprofile

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847199A (en) * 1973-01-14 1974-11-12 K & M Rubber Co Removable oven door gasket and method of making same
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
EP0277098B1 (de) * 1987-01-21 1992-04-29 GIAT S.r.L. Geschlossener oder offener Rahmen für eine Backofentürdichtung aus Elastomermaterial
DE69611683T2 (de) * 1996-12-18 2001-08-02 Posa S P A Dichtung aus Elastomer, insbesondere für Backofentür

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101800754B1 (ko) 2016-06-17 2017-11-24 린나이코리아 주식회사 오븐 캐비넷 가스켓

Also Published As

Publication number Publication date
DE69718891T2 (de) 2003-11-27
EP0859196A1 (de) 1998-08-19
ATE232288T1 (de) 2003-02-15
ES2142715A1 (es) 2000-04-16
DE69718891D1 (de) 2003-03-13
ES2142715B1 (es) 2000-11-16

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