EP1445543B1 - Serrure pour portes d'appareils - Google Patents

Serrure pour portes d'appareils Download PDF

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Publication number
EP1445543B1
EP1445543B1 EP20030002781 EP03002781A EP1445543B1 EP 1445543 B1 EP1445543 B1 EP 1445543B1 EP 20030002781 EP20030002781 EP 20030002781 EP 03002781 A EP03002781 A EP 03002781A EP 1445543 B1 EP1445543 B1 EP 1445543B1
Authority
EP
European Patent Office
Prior art keywords
lever
door
stop
depression
bolt
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
EP20030002781
Other languages
German (de)
English (en)
Other versions
EP1445543A1 (fr
Inventor
Ernst-Christan Braetsch
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.)
Rahrbach GmbH
Original Assignee
Rahrbach GmbH
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 Rahrbach GmbH filed Critical Rahrbach GmbH
Priority to DE50303185T priority Critical patent/DE50303185D1/de
Priority to EP20030002781 priority patent/EP1445543B1/fr
Publication of EP1445543A1 publication Critical patent/EP1445543A1/fr
Application granted granted Critical
Publication of EP1445543B1 publication Critical patent/EP1445543B1/fr
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
    • F24C15/022—Latches
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E05B15/0205—Striking-plates, keepers, staples
    • E05B15/021—Strikers having multiple positions for the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/162—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially towards or away of the plane of the wing or frame
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E05B15/0205—Striking-plates, keepers, staples
    • E05B15/024—Striking-plates, keepers, staples adjustable
    • E05B15/025—Striking-plates, keepers, staples adjustable the striker being movable by a screw/nut
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0065—Operating modes; Transformable to different operating modes

Definitions

  • the invention relates to a closure for appliance doors with a deformable seal. It consists of a device-side clamp and a door-side closure housing, the block except a detent recess has a height-offset Vorrastmulde and the door opening can be done in two stages by at first actuation of the retaining lever, the bolt of the locking lever moves from the detent recess into the Vorrastmulde and the second operation Vorrastmulde leaves, allowing the door to open fully.
  • the devices are predominantly hot devices in which food or other goods are exposed to elevated temperature or possibly slightly elevated pressure.
  • the invention has for its object to develop an improved two-stage closure that is unmistakable to use with a simple structure. According to the invention, this is achieved in that a two-armed, spring-loaded locking lever is mounted in the closure housing, the load arm engages with a bolt in the block and its power arm facing a driving lever which is resiliently mounted on a retaining lever and that the power arm of the locking lever has two stop surfaces, against which a nose of the driving lever abuts.
  • the block is designed so that it has only one catch recess on one longitudinal side. If this block is mounted offset by 180 °, the result is a one-step shutter without any further changes. The customer himself can therefore decide on-site whether he wants to operate the device with one or two-stage closure.
  • FIG. 1 denotes the device housing, with 2 the frame.
  • a hollow profile 3 represents the door frame.
  • In this frame is a plate, for. As a glass 4, used. Between door and frame a circumferential hollow profile seal 5 is arranged.
  • a clamp 6 is mounted, the lower end has a thread. With the help of nuts 7 and 8, the clamp 6 is fixed in height adjustable.
  • a cap 9 protects the thread from dirt and aggressive vapors.
  • the block 6 has left a detent recess 6a and offset in height to a pre-detent recess 6b. On the right side you can see another detent recess 6c.
  • the upper end of the block are two roof surfaces 6d and 6e.
  • the closure housing receiving the movable parts is designated 10.
  • a two-armed locking lever 12 is supported by means of the locking lever axis 13.
  • the load arm 12a carries a bolt 12b, which rests in the detent recess 6a.
  • the power arm 12c has at its upper end two stop surfaces against which the nose 16a of a driving lever 16 can come.
  • This lever is mounted on an axis 17 on a holding lever 14 which is pivotable about a retaining lever axis 15.
  • a coil spring 18 is disposed between the levers 14 and 16 and pushes the limited movable lever 16 down.
  • a cap 19 is pushed, which may consist of metal or plastic. In the illustrated position of the parts, the door is tightly closed, the seal 5 slightly compressed.
  • Fig. 2 shows the moment of transition to the pre-opening of the door.
  • the holding lever 14 is raised.
  • the nose 16a of the lever 16 has deflected the locking lever 12.
  • the bolt 12b has not yet arrived at the Vorrastmulde 6b.
  • Fig. 3 the retaining lever 14 is still raised.
  • the bolt 12b is located in the Vorrastmulde 6b.
  • the hollow profile 3 has detached from the seal 5. Overpressure and heat damage can escape without damage.
  • Fig. 4 shows how the retaining lever 14 after being released by the force of a spring 20 (Fig. 7) is reset.
  • the nose 16a slides under deformation of the spring 18 via the cutting edge 12c3 of the locking lever 12.
  • the retaining lever 14 moves in the direction of the arrow 22; the driving lever 16 is deflected in the direction of arrow 23.
  • Fig. 5 shows the stable state with pre-opened door.
  • the driving lever 16 is exposed over the locking lever 12th
  • Fig. 6 the holding lever 14 has been raised again.
  • the nose 16a of the lever 16 has taken the locking lever 12 and this deflected in a clockwise direction.
  • the mandrel 12b has detached from the clamp 6.
  • the door is free and can be fully opened.
  • FIG. 7 shows the cross section through the closure arrangement along the line AB in FIG. 1.
  • the section passes through the clamp 6, the nuts 7 and 8 and the flap 9.
  • the locking lever 12 with the load arm 12a, the bolt 12b and the power arm 12c.
  • the axes 13 and 15 are mounted. On the axis 13 sits a return spring 20. Another return spring 21 is located on the axis 15 and brings the retaining lever 14 in the starting position. Below the axis 15 can be seen the driving lever 16 and the coil spring 18. The cap 19 encloses the closure housing 10 and the moving parts.
  • the force arm 12c of the locking lever 12 has at the upper end a first stop surface 12c1, a second stop surface 12c2 and a cutting edge 12c3.
  • the nose 16a of the driving lever 16 is located on the surface 12c1 and rotates the locking lever in a clockwise direction.
  • a slot 16b and a dome 14a limit the movement of the lever 16 relative to the lever 14.
  • the coil spring 18 pushes the lever 16 down.
  • FIG. 9 shows an enlarged detail from FIG. 4. It can be seen that when the spring 14 springs back, the nose 16a abuts against the cutting edge 12c3. The lever 16 deviates upward under deformation of the spring 18.
  • Fig. 10 an enlarged detail of Fig. 6, it is shown how the nose 16a of the lever 16 abuts against the stop surface 12c2 and the locking lever 12 entrains for the purpose of full opening of the door.
  • a roll can be placed on the bolt. If the customer operates the device under conditions of use that do not require a intermediate catch, he can solve the screw connection of the block and turn it by 180 °. The bolt 12b then moves over the roof surface 6e until it has reached the detent recess 6c.
  • the closure housing can be constructed so that it largely disappears in the hollow profile of the door frame.
  • the retaining lever with the recessed grip then sits directly above the door glass.
  • the closure described for devices with special pressure or heat load consists of a few inexpensive to manufacture housing parts, levers and springs, which are arranged outside of the possibly aggressive atmosphere in the device.
  • the novel closure is extremely resistant to interference and above all foolproof in the operation.
  • the closure is in two stages, so formed with intermediate latching position. Without any additional effort, however, it can also be used as a single-stage closure, if the operating conditions allow it.
  • the device door lock described is particularly suitable to be used in commercially used hot equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Lock And Its Accessories (AREA)

Claims (5)

  1. Serrure pour portes d'appareils avec joint d'étanchéité déformable se composant d'un gond côté appareil et d'un boîtier de serrure côté porte, étant donné que le gond (6) présente, outre une cavité d'arrêt (6a), une cavité pré-arrêt (6b) décalée en hauteur, et que l'ouverture de la porte peut se faire en deux niveaux comme suit : au premier actionnement du levier de maintien (14), le boulon (12b) du levier de blocage (12) se déplace dans la cavité pré-arrêt (6b) et, au deuxième actionnement, quitte la cavité pré-arrêt (6b), ce par quoi la porte peut être ouverte complètement,
    caractérisé en ce que
    dans le boîtier (10) est logé un levier de blocage (12) à deux bras chargé par ressort dont le bras de charge (12a) prend avec un boulon (12b) dans le gond (6) et dont le bras de force (12c) se trouve en face d'un levier d'entraînement (16) qui est logé de manière élastique sur un levier de maintien (14) et en ce que le bras de force (12c) du levier de blocage (12) présente deux surfaces de butée (12c1, 12c2) contre lesquelles se heurte le nez (16a) du levier d'entraînement (16).
  2. Serrure selon la revendication 1, caractérisée en ce que le gond (6) à hauteur variable qui se trouve dans le châssis présente, outre la cavité d'arrêt (6a) et la cavité pré-arrêt (6b), une autre cavité d'arrêt (6c) sur le flanc opposé, de manière à ce que, lorsqu'on tourne le gond (6) de 180°, on obtient une fermeture de porte à un seul niveau.
  3. Serrure selon la revendication 1, caractérisée en ce que le boulon (12b) du levier de blocage (12) porte un rouleau afin d'éviter le frottement de glissement.
  4. Serrure selon la revendication 1, caractérisée en ce que le levier de maintien (14) présente une poignée encastrée.
  5. Serrure selon la revendication 1, caractérisée en ce que un ressort de rappel (20) agit sur le levier de blocage (12) et un ressort de rappel (21) agit sur le levier de maintien (14)
EP20030002781 2003-02-07 2003-02-07 Serrure pour portes d'appareils Expired - Lifetime EP1445543B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50303185T DE50303185D1 (de) 2003-02-07 2003-02-07 Verschluss für Gerätetüren
EP20030002781 EP1445543B1 (fr) 2003-02-07 2003-02-07 Serrure pour portes d'appareils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030002781 EP1445543B1 (fr) 2003-02-07 2003-02-07 Serrure pour portes d'appareils

Publications (2)

Publication Number Publication Date
EP1445543A1 EP1445543A1 (fr) 2004-08-11
EP1445543B1 true EP1445543B1 (fr) 2006-05-03

Family

ID=32605349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030002781 Expired - Lifetime EP1445543B1 (fr) 2003-02-07 2003-02-07 Serrure pour portes d'appareils

Country Status (2)

Country Link
EP (1) EP1445543B1 (fr)
DE (1) DE50303185D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20070082U1 (it) * 2007-03-12 2008-09-13 Ik Interklimat S P A Chiusura per forni e similari perfezionata
DE102009014233A1 (de) 2008-12-23 2010-06-24 Convotherm Elektrogeräte GmbH Verschluss für eine Tür eines Gargeräts, Gargerät und Verfahren zum Betreiben eines Gargerätes
DE102010007952B4 (de) 2009-08-21 2021-08-26 Convotherm Elektrogeräte GmbH Verschluss für eine Tür eines Gargeräts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960297A (en) * 1989-09-28 1990-10-02 Component Hardware Group, Inc. Double action latch
EP0908590A1 (fr) * 1997-10-11 1999-04-14 Rahrbach GmbH Dispositif de fermeture pour porte d'un appareil à température élevée
ATE261047T1 (de) * 1999-12-24 2004-03-15 Rahrbach Gmbh Verschluss für gerätetüren

Also Published As

Publication number Publication date
EP1445543A1 (fr) 2004-08-11
DE50303185D1 (de) 2006-06-08

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