EP3488063B1 - Charnière de rappel automatique à inverseur de force pour portes coupe-feu - Google Patents

Charnière de rappel automatique à inverseur de force pour portes coupe-feu Download PDF

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Publication number
EP3488063B1
EP3488063B1 EP17758948.8A EP17758948A EP3488063B1 EP 3488063 B1 EP3488063 B1 EP 3488063B1 EP 17758948 A EP17758948 A EP 17758948A EP 3488063 B1 EP3488063 B1 EP 3488063B1
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EP
European Patent Office
Prior art keywords
door
closing
spring
tubular element
automatic
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.)
Active
Application number
EP17758948.8A
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German (de)
English (en)
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EP3488063A1 (fr
Inventor
Mario Maggi
Rosella Maggi
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Maggi SpA
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Maggi SpA
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
    • E05F1/1215—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/20—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/638—Cams; Ramps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors

Definitions

  • the present invention relates to an automatic return hinge with force inverter for fire doors.
  • fire doors are self-closing doors that close by means of a torsion spring arranged in at least one hinge of the door that causes the loading of the return torsion spring when the door goes from closed to open at the maximum opening (180° or 90°).
  • the energy of the spring is returned by the hinge, thus allowing the automatic re-closing of the door.
  • Such device is usually inserted only in one of the two hinges that constrain the door upon opening.
  • the door closes and the force of the spring is unloaded.
  • the door takes on a high speed, while accelerating, and may slam with extreme violence despite the adjustment device imposing the most adequate force.
  • the quick return may cause dangerous conditions, especially if there are children, youth or elderly people present who could suffer the impact of such a door in a negative manner more than other people.
  • the excessive closing speed may induce undesired vibrations on the door frame.
  • devices for inverting the force of the door contrasting the action of the return spring have been proposed.
  • Such devices are positioned in the other hinge of the door, that is the one that does not have the return spring. They provide the presence of a further spring that contrasts the return spring of the other hinge only in the end portion of the closing stroke of the door, thus slowing down the speed in such section.
  • the Applicant has perceived that the closing movement of the door is improved by integrating the adjustment device with the spring and the force inversion or braking device in the same hinge.
  • WO2008/100035 discloses an example of a hinge with a braking device and a torsion spring.
  • One aspect of the present invention relates to an automatic return hinge with force inverter for fire doors having the features of appended claim 1.
  • the present invention applies to a fire door mounted on a wall 12 within a jamb frame 12 ⁇ on which a leaf 14 is provided.
  • a hinge for example the upper one, is made according to the present invention and is indicated as a whole with 11.
  • the hinge 11 comprises a frame-side portion 15 and a door-side portion 16, both made from thick sheet metal, for example galvanized steel or other suitable metal material.
  • the frame-side portion 15, which is U-shaped in elevated view, comprises a first fixing plate 17, which is fixed to the frame of the door case that integrally extends in a pair of side tubular elements 18, that are folded at the ends of the fixing plate 17.
  • a square-folded connection area 19 is provided between the first fixing plate 17 and the tubular elements 18.
  • the door-side portion 16 - is also shaped as shown in side elevation view - comprises a second fixing plate 20, which is fixed to the door itself and rotates therewith, that extends in a central tubular element 21.
  • a square-folded connection area is provided between the second fixing plate 20 and the central tubular element 21.
  • the side tubular elements 18 and the central one 21 are hinge-assembled substantially aligned with each other to form altogether an overall tubular element inside which both an automatic door re-closing device possibly provided with adjustment means of the re-closing force, and a device for inverting the force of the door re-closing movement, are positioned, which cooperate with each other to generate a controlled movement of automatic re-closing, thus controlling the rotation movement of the central tubular element 21 and accordingly of the second door fixing plate, thus avoiding the door to gain speed during closing.
  • Such re-closing controlled movement for a first angular range is obtained due to the contribution of a torsion spring of the automatic re-closing device contrasted by the contribution of the force inverter device, while for a second angular range until the closing of the door, it is obtained due to the sum of the contribution of such torsion spring of the re-closing device and the contribution of a further spring of the force inverter device, thus accelerating the automatic closing movement of the door in the last section thereof.
  • Such automatic re-closing device comprises, inside a side tubular element 18, a fixing body 22 provided with a boring 221 in which a first termination of a re-closing torsion spring 23 is inserted.
  • Such fixing body is made integral with the tubular element 18 by means of a dowel 24 threaded in a cross hole obtained on such tubular element.
  • Such automatic re-closing device is provided with means for adjusting the torsion of such spring 23.
  • such fixing body is provided with a plurality of planar facets 211 so as to have a polygonal cross section.
  • the dowel 24 presses on the facets when screwed in the tubular element 18, thus blocking the possible rotation movement of the fixing body.
  • the dowel is re-screwed, causing it to abut with one of the faces or planar facets of the fixing body.
  • the number of facets i.e. twelve determines just as many spring force adjustment positions.
  • the device for inverting the force is at the second end of the re-closing spring, which device comprises a substantially cylindrical cam body 31 provided with a boring 311 in which such second termination of the spring 23 is inserted.
  • the surface of the cam body opposite to the one that has the boring has a wavy profile and comprises four concave portions 312, preferably of equal sizes and degree of concavity, that join to one another in raised corners having a substantially triangular flat portion 314.
  • the concave portions have rises 312' and depressions 312".
  • Two balls 32 are housed in two opposite such concave portions, such balls being inserted in seats 33 obtained on the surface of a closed base 34 of an internally hollow cylindrical body 35, having a through hole 341 on such base and inside which a compression spring 36 is inserted.
  • Such cylindrical body is inserted and made integral with the tubular element 18 opposite to the one that comprises the fixing body 21 by means of a pointed dowel 37, threaded in a cross hole obtained on such tubular element and that is inserted in a notch or hole or an equivalent housing obtained on the back of such cylindrical body 35.
  • the cylindrical body 35 At its end opposite to the one provided with the closed base 34, the cylindrical body 35 comprises a thrust bearing 38 with washer 381 for lubrication that presses on the termination of the compression spring.
  • the whole device for inverting the force is kept assembled by a through shaft 39 threaded at the termination thereof, that screws in a longitudinal central hole 341 of the cam body, that has a self-locking nut 41 at its tail.
  • Such self-locking nut adjusts the degree of compression of the spring and a crimping of the shaft is provided thereon so as to allow the adjustment of the compression by acting on the nut, however preventing it from being completely unscrewed.
  • the through shaft 39 is made in a single body with the cam 31 and has the end portion thereof threaded for its coupling with the above self-locking nut.
  • the cam body is arranged in the overall tubular element so as to be covered by the central tubular element 21, that covers also the re-closing spring 23 and has a preferably internally threaded side hole 315 on its side surface.
  • a slot 214 obtained on the central tubular element allows the connection, for example by means of a screw 42 which is inserted in such slot 214 and which is screwed in the side hole 315, between such body and the central tubular element 21.
  • Sealing and self-lubricating bushings 216 are provided at the opposite ends of the central tubular element during the rotation movement of the tubular element so as to minimize the friction.
  • Closing caps 212, 212' are at the opposite ends of the hinge.
  • the hinge works in the following manner.
  • the force of the torsion spring is returned to the cam, which transfers it in turn to the central tubular element 21, thus putting it into rotation to close the door.
  • the "wavy" upper surface of the cam body has the balls that abut against these waves which in addition to the rotation in the cam body, also cause an axial movement (transmitted also to the shaft 39) contrasted by the force of the compression spring when the balls are in the ascending portion of such concave portion, or favoured when the balls are in the descending portion of such concave portion.
  • the compression also increases of the torsion spring, which advantageously has open coils; the compression spring contrasts the force released to the door by the torsion spring 23.
  • the compression spring contributes to increasing the force released to the door by the torsion spring 23.
  • a deceleration effect is obtained (for example, from 90° to 45° of opening) and then a successive re-acceleration is obtained (from 45° to 0°) during the step of re-closing the door, thus ensuring the complete and secure closing of the door.
  • the slowing down and re-acceleration effect in the end part of the closing movement depends on the waves of the cam and on the load given to the compression spring 36 by means of the self-locking nut 41. Indeed, if the concave portions are very deep, the axial movement of the cam will be more pronounced, while if they are not very deep, there is less of an effect, the compression of the spring being equal. In the disclosed embodiment of the present invention, since there are four concave portions joined to one another, the cam has rises and depressions every 45° of movement. Other equivalent shapes of the cam are possible.
  • the balls 32 are housed in a hole having size smaller than the diameter of the ball, so as to allow the balls themselves to be able to rotate and not cause friction.
  • three further balls (placed at 120° from one another) that are smaller than the balls 32 are interposed between the hole for housing the balls 32 and the balls themselves, the further balls allowing an improved rotation of the balls 32 with respect to the housing.
  • a sealing ring nut is positioned on the balls 32, thus preventing them from coming out of the housings.
  • a guide bushing that abuts with the thrust bearing 38 is advantageously inserted in the compression spring 36.
  • Grouping two systems (automatic re-closing and force inverter) into a single hinge decreases the friction in the movement of the door with respect to inserting the re-closing device in one hinge and the device for inverting the force in another one.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Special Wing (AREA)

Claims (4)

  1. Charnière de retour automatique pour portes coupe-feu adaptée pour être montée sur un mur (12) à l'intérieur d'un cadre de montant (12') sur lequel une feuille (14) de cette porte est prévue, cette charnière comprenant une partie côté cadre (15) et une partie côté porte (16),
    la partie côté cadre étant en forme de U comprenant une première plaque de fixation (17), qui est fixée au cadre de porte qui s'étend dans une paire d'éléments tubulaires latéraux (18),
    la partie côté porte comprenant une seconde plaque de fixation (20), qui est fixée à la porte elle-même et tourne avec elle, qui s'étend dans un élément tubulaire central (21),
    les éléments tubulaires latéraux (18) et l'élément central (21) étant, une fois la charnière assemblée, alignés les uns avec les autres pour former ensemble un élément tubulaire global à l'intérieur duquel sont positionnés à la fois un dispositif de refermeture automatique de la porte et un dispositif pour inverser la force du mouvement de refermeture de la porte, qui coopèrent l'un avec l'autre pour générer un mouvement contrôlé de refermeture automatique, en contrôlant le mouvement de rotation de l'élément tubulaire central (21) et de la seconde plaque de fixation de la porte (20) en conséquence,
    dans laquelle le mouvement commandé de refermeture pour une première plage angulaire est obtenu grâce à la contribution d'un ressort de torsion (23) du dispositif de refermeture automatique contrastée par la contribution du dispositif inverseur de force, tandis que pour une seconde plage angulaire jusqu'à la fermeture de la porte, grâce à la somme de la contribution de ce ressort de torsion (23) du dispositif de refermeture et de la contribution d'un autre ressort (36) du dispositif inverseur de force, accélérant le mouvement de fermeture automatique de la porte dans sa dernière section,
    dans laquelle ce dispositif de refermeture automatique comprend, à l'intérieur de l'un des deux éléments tubulaires latéraux (18), un corps de fixation (22) muni d'un alésage (221) dans lequel est insérée une première extrémité du ressort de refermeture (23), au niveau de la seconde extrémité de ce ressort de refermeture se trouve le dispositif inverseur de force, lequel dispositif comprend un corps de came (31) sensiblement cylindrique pourvu d'un alésage (311) dans lequel est insérée cette seconde extrémité du ressort (23), le corps de came est disposé dans l'élément tubulaire global de manière à être recouvert par l'élément tubulaire central (21), qui recouvre également le ressort de refermeture (23), ce corps de came (31) étant solidaire dudit élément tubulaire central (21) qui tourne en raison du mouvement d'ouverture ou de fermeture de la porte,
    dans laquelle le corps de came (31) a un trou latéral (315) sur sa surface latérale, une fente (214) obtenue sur l'élément tubulaire central (21) permet la connexion, par exemple au moyen d'une vis (42) qui est insérée dans cette fente (214) et qui est vissée dans le trou latéral (315), entre ce corps de came (31) et l'élément tubulaire central (21),
    dans laquelle ce corps de fixation (22) est rendu solidaire de l'élément tubulaire latéral (18) au moyen d'une cheville (24) filetée dans un trou transversal obtenu sur cet élément tubulaire,
    dans laquelle ce dispositif de refermeture automatique est muni de moyens pour régler la torsion de ce ressort (23), caractérisée en ce que les moyens de réglage comprennent une pluralité de facettes planes (211) obtenues sur ce corps de fixation (22) de manière à avoir une section transversale polygonale, la cheville (24) appuie sur les facettes lorsqu'elle est vissée dans l'élément tubulaire (18), bloquant le mouvement de rotation possible du corps de fixation, le nombre de facettes détermine un nombre correspondant de positions de réglage de la force du ressort, et que la surface du corps de came (31) opposée à celle pourvue de l'alésage (311) a un profil ondulé et comprend quatre parties concaves (312) qui sont reliées entre elles, deux boules (32) sont logées dans deux de ces parties concaves opposées, ces boules étant insérées dans des sièges (33) obtenus sur la surface d'une base fermée (34) d'un corps cylindrique (35) solidaire de l'élément tubulaire intérieurement creux (18) ayant un trou traversant (341) sur cette base et à l'intérieur duquel le ressort de compression (36) est inséré.
  2. Charnière selon la revendication 1, dans laquelle le corps cylindrique (35), à son extrémité opposée à celle pourvue de la base fermée, comprend un palier de butée (38) avec une rondelle (381) pour la lubrification qui appuie sur l'extrémité du ressort de compression, l'ensemble du dispositif inverseur de force étant maintenu assemblé par un arbre fileté traversant (39) dont l'extrémité est vissée dans le trou central longitudinal (341) du corps cylindrique (35) qui a, à sa queue, un écrou autobloquant (41) qui ajuste le degré de compression du ressort.
  3. Charnière selon la revendication 2, dans laquelle les boules (32) sont logées dans un trou ayant une taille inférieure au diamètre de la boule, de manière à permettre aux boules elles-mêmes de pouvoir tourner et de ne pas provoquer de frottement.
  4. Charnière selon la revendication 2, dans laquelle l'arbre traversant (39) est réalisé en un seul corps avec la came (31) et a sa partie d'extrémité filetée pour son accouplement avec l'écrou autobloquant (41).
EP17758948.8A 2016-07-19 2017-07-18 Charnière de rappel automatique à inverseur de force pour portes coupe-feu Active EP3488063B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000075442A IT201600075442A1 (it) 2016-07-19 2016-07-19 Cerniera a ritorno automatico con invertitore di forza per porte tagliafuoco.
PCT/IB2017/054330 WO2018015877A1 (fr) 2016-07-19 2017-07-18 Charnière de rappel automatique à inverseur de force pour portes coupe-feu

Publications (2)

Publication Number Publication Date
EP3488063A1 EP3488063A1 (fr) 2019-05-29
EP3488063B1 true EP3488063B1 (fr) 2023-02-22

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Application Number Title Priority Date Filing Date
EP17758948.8A Active EP3488063B1 (fr) 2016-07-19 2017-07-18 Charnière de rappel automatique à inverseur de force pour portes coupe-feu

Country Status (4)

Country Link
EP (1) EP3488063B1 (fr)
FI (1) FI3488063T3 (fr)
IT (1) IT201600075442A1 (fr)
WO (1) WO2018015877A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019118811A1 (de) 2019-07-11 2021-01-14 JUMB GmbH & Co. KG Dreheinrichtung mit plattenförmigen Elementen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100777202B1 (ko) * 2007-02-14 2007-11-16 장종복 도어 개폐용 자유 경첩
RU2523232C1 (ru) * 2010-08-05 2014-07-20 Уотерсон Корп. Регулируемая торсионная петля
ITMI20110529A1 (it) * 2011-03-31 2012-10-01 Maggi S R L Cerniera frenata per porte tagliafuoco

Also Published As

Publication number Publication date
IT201600075442A1 (it) 2018-01-19
WO2018015877A1 (fr) 2018-01-25
EP3488063A1 (fr) 2019-05-29
FI3488063T3 (fi) 2023-05-24

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