EP2781676A1 - Charnière masquée avec dispositif automatique de rappel à une position de fermeture - Google Patents

Charnière masquée avec dispositif automatique de rappel à une position de fermeture Download PDF

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Publication number
EP2781676A1
EP2781676A1 EP14161168.1A EP14161168A EP2781676A1 EP 2781676 A1 EP2781676 A1 EP 2781676A1 EP 14161168 A EP14161168 A EP 14161168A EP 2781676 A1 EP2781676 A1 EP 2781676A1
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EP
European Patent Office
Prior art keywords
hinge
containing bodies
closed position
kinematism
hinging
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
Application number
EP14161168.1A
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German (de)
English (en)
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EP2781676B1 (fr
Inventor
Francesco Pucillo
Gaetano Cascini
Giancarlo Soldera
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.)
Otlav SpA
Original Assignee
Politecnico di Milano
Otlav SpA
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Publication of EP2781676A1 publication Critical patent/EP2781676A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/06—Hinges with pins with two or more pins
    • E05D3/18—Hinges with pins with two or more pins with sliding pins or guides
    • E05D3/186—Scissors hinges, with two crossing levers and five parallel pins
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1014—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in only one position, e.g. closed

Definitions

  • the present invention concerns a hinge of the so-called concealed or invisible type, since it is not visible from the outside when it is mounted in a door or window frame or piece of furniture, which is in a closed position.
  • the hinge comprises two hinging units, articulated to each other by means of a central articulation pin and pivoted on two corresponding containing bodies, one insertable in a seating of a fixed structure, such as the frame of a window or door or piece of furniture for example, and the other in a seating of a corresponding mobile structure, such as for example a door, a window, a shutter or a panel of a door or window, or a piece of furniture.
  • the hinge allows to open the mobile structure by 180° with respect to the fixed structure.
  • the hinge according to the present invention is provided with a device which tends to maintain it or return it automatically constantly toward a closed position.
  • hinges In the field of door and window frames and furniture, concealed or invisible hinges are known, that is, the type in which, in the closed position, all the elements that make it up are completely inserted inside the door or window frame or piece of furniture on which they are mounted, so that they are not visible from the outside.
  • Known concealed hinges can be substantially divided into three main categories, depending on the number of fixed and mobile fulcrums of the kinematism that allows them to move between a closed position and a position of maximum opening, usually rotated by 180° with respect to the closed one. These three categories are: A) invisible hinges with 5 fulcrums, 2 of which are sliding, which is shown schematically in figs. 1 and 1a ; B) those with 6 fulcrums, of which one is sliding, which is shown schematically in figs. 2 and 2a ; C) those with 7 fulcrums, of which 4 are in a fixed position and the other three constrained to move according to the kinematism, which is shown schematically in fig. 3 .
  • traction springs It is known, for example, to obtain a closing effect with traction springs.
  • a traction spring acting between each of the sliding fulcrums fa and fb and the bottom of the corresponding containing body, exerts an opposite action to that which allows the sliding of the fulcrums fa and fb starting from the closed position, shown in fig. 1 .
  • traction springs have a closing effect on the hinge and hence on the corresponding mobile part, for example a door or a window of a frame or of a piece of furniture.
  • Torsion springs have also been widely used to obtain an automatic return function in hinges, above all in "not invisible” hinges, such as those described in the American patent US-A-1,892,584 . Torsion springs can be used for the same purpose in invisible hinges too. For example, with reference to a "5+2" category hinge, one or more torsion springs can be inserted in order to exploit the rotation of one of the two fixed fulcrums fc and fd ( figs. 1 and 1a ). These torsion springs, with one shaft solid with the elements in rotational motion and one inserted in the housing of the hinge, tend to exert an opposite moment to that which opens the hinge.
  • torsion springs Another possible application of torsion springs is where the two ends of the spring are made solid to the two arms which make up the kinematism of the hinge, with the spring coaxial to the central fulcrum fe of the hinge, as shown in figs. 1 and 1a . In this case too a torsion spring would exert an opposite moment to that which opens the hinge.
  • a torsion spring can be applied in correspondence to the three fixed fulcrums fc, fd and ff, acting between a rotation arm and the containing body of the hinge, or in correspondence to the central fulcrum fe, acting thanks to the relative rotation of the two arms. Moreover, it is also possible to insert a torsion spring in correspondence to the fulcrum fa that connects the crank-type lever to the corresponding arm of the kinematism.
  • a torsion spring can be inserted in correspondence to one of the four fixed fulcrums fc, fd, ff and fg with respect to the containing bodies, in correspondence to the central fulcrum fe, or again in one of the two fulcrums fa and fb that articulate the arms of the kinematism with respect to each other.
  • Leaf springs are another elastic element potentially able to exert a closing action. Their application is possible in all three of the above categories of hinge. The only difference with respect to the solutions analyzed heretofore is that for the application of leaf springs the profile of the rotating body must be suitably profiled to exert the action of compression on the spring itself, mounted in contact on one or more faces of the containing bodies of the hinge.
  • the known hinges described above all have at least the following disadvantage. Whichever type of spring is used, in proximity to the closed position of the hinge, that is, with an angle of opening near to 0°, the force exerted by the spring is minimal. In other words, for low angles of opening any spring exerts an action only equal to that of a possible preloading of the spring itself.
  • With lower preloading it is certainly easier to open the hinge, and there is also a reduction in technical complexity, but the closing action is less effective.
  • a concealed hinge that comprises two containing bodies, hollow inside and suitable to be associated one to a fixed structure and the other to a mobile structure.
  • a hinging kinematism with a plurality of mobile parts is disposed inside the two containing bodies, in an articulated manner with respect thereto.
  • a pair of springs cooperate with the hinging kinematism in order to apply to the latter a force tending to keep the two containing bodies in a closed position.
  • a magnetic element is also provided, disposed in correspondence to the external part of one of the two containing bodies, and configured to cooperate with a corresponding ferromagnetic element, mounted on the other of the two containing bodies, when the two containing bodies are in the closed position.
  • the concealed hinge described in document JP-U-05 52181 has the disadvantage that the magnetic element acts on the corresponding ferromagnetic element only when the two containing bodies are in their closed position, or in proximity thereto, whilst it has practically no effect when the two containing bodies are in the open position. Indeed, as is known, the magnetic attraction of the magnetic element reduces with the square of the distance from the corresponding ferromagnetic element.
  • another disadvantage of the concealed hinge described in document JP-U-05 52181 is that, in its open position, the magnetic element could attract other metallic objects which might be near the hinge.
  • EP-A-1 857 624 describes a hinge for motor vehicles that comprises two containing bodies in each of which an arm is pivoted having one end provided with a portion sliding in an aperture in the other containing body. In each containing body, in correspondence to said aperture, a friction element is provided, with a high friction coefficient, in order to contrast the movements of the corresponding portion of the arm.
  • EP-A-1-857 624 neither provides nor suggests to use any magnetic element in order to promote the closing of the hinge or to keep it in the closed position.
  • One purpose of the present invention is to obtain a concealed hinge that is provided with an automatic return device toward a closed position of the hinge and that said automatic return device is simple, reliable and inexpensive.
  • Another purpose of the present invention is to obtain a concealed hinge that is provided with an automatic return device that on the one hand guarantees that the hinge is properly maintained in the closed position, and on the other does not require the user to exert great force in order to pass from the closed position to any open position, with a rotation of a few degrees up to 180° with respect to the closed position.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a concealed hinge according to the present invention for door and window frames or pieces of furniture, with a mobile structure articulated with respect to a fixed structure, comprises two containing bodies, hollow inside and one suitable to be associated to the fixed structure and the other to the mobile structure, or vice versa.
  • a hinging kinematism with at least one mobile part is disposed inside the two containing bodies, in an articulated manner with respect thereto.
  • At least one elastic element and one magnetic element are associated to the hinging kinematism in order to apply to the latter a force tending to return the two containing bodies in a closed position.
  • both the at least one elastic element and the at least one magnetic element are inserted inside at least one or both the containing bodies, in order to act at least on the mobile part of the kinematism, in order to contribute to maintain, or return, the two containing bodies in their closed position.
  • the magnetic element comprises a magnet, installed in contact with an internal wall of one of the containing bodies.
  • a magnetic element disposed inside at least one of the two containing bodies introduces a supplementary force precisely in the functioning field in which the action of the elastic element is most lacking, that is, for small angles of opening of the hinge, without affecting the force needed to open it. This is because the force exerted by a magnetic element on a metal body decreases to the square with the distance of the body. For this reason, once the opening of the hinge has begun, the magnetic element does not cause the user extra work due to the rapid decrease of its action with the increase in distance.
  • the magnetic elements located for example on the bottom of the containing bodies, can exert a recall action both on the translating parts, as in the "5+2" hinge, or in the sliding pin of the "6+1” hinge, and in the crank-type levers in rotary motion, as in the kinematisms of the "6+1" or "7" hinges.
  • a "5+2" type hinge 10 of the concealed type according to the present invention and in accordance with a first form of embodiment, is shown schematically but sufficiently clearly and completely so that a person of skill can make it.
  • the hinge 10 comprises two containing bodies 11 and 12, hollow inside and one suitable to be associated to a fixed structure and the other to a mobile structure of a door or window frame or a piece of furniture, or vice versa.
  • a hinging kinematism 13, of the known type and therefore not described in detail, is disposed inside the two containing bodies 11 and 12, in an articulated manner with respect thereto.
  • the hinging kinematism 13 comprises five fulcrums 14a, 14b, 14c, 14d and 14e.
  • the fulcrums 14a and 14b are able to slide on pairs of rectilinear grooves 15 made on the two containing bodies 11 and 12.
  • the fulcrums 14c and 14d are fixed, whilst the fulcrum 14e acts as a central fulcrum of the hinging kinematism 13.
  • a pair of torsion springs 16, which act as elastic elements, are disposed in a spiral around the fixed fulcrum 14d, and constantly apply a force on the latter that tends to maintain, or to return, the two containing bodies 11 and 12 and therefore the hinge 10, into a closed position, shown in figs. 4 and 5 .
  • a magnet 17 is mounted in the containing body 11, for example on one of its internal walls, so as to cooperate with the sliding fulcrum 14a and in particular to attract it toward itself, until it contacts it, when the hinge 10 is in the closed position.
  • a ferromagnetic element can be associated to the sliding fulcrum 14a, so that the magnet will directly contact the former rather than the sliding fulcrum 14a.
  • the action of the magnet 17 increases to the square as the sliding fulcrum 14a gets near to it. Therefore, since the minimum distance is reached when the hinge 10 is almost closed, the magnet 17 will exert the maximum action precisely for low angles of opening of the hinge 10, that is, when the action of the torsion spring 16 is least effective.
  • the hinge 110 is similar to that described in the European patent application N° 12188173.4 of the present Applicant, which is cited here for reference.
  • the hinge 110 has the following differences.
  • the fulcrum 14a instead of sliding, is pivoted at the end of a crank-type lever 18, which in turn is pivoted on a fixed fulcrum 14f mounted on the containing body 11.
  • the pair of torsion springs 16 is disposed in a spiral around the fixed fulcrum 14f.
  • the magnet 17 is mounted in the containing body 11 so as to cooperate with the crank-type lever 18 and in particular to attract it toward itself, until it is in contact, when the hinge 110 is in the closed position ( figs. 12 and 13 ).
  • a ferromagnetic element 17 can be associated to the crank-type lever 18, so that the magnet 17 will directly contact the former rather than the crank-type lever 18.
  • a "7" type hinge 210 of the concealed type according to the present invention and in accordance with a third form of embodiment, is shown schematically but sufficiently clearly and completely so that a person of skill can make it.
  • the hinge 210 has the following differences.
  • the fulcrums 14a and 14b are each pivoted to the end of an arm 19, respectively 20 of the hinging kinematism 13, which in turn is pivoted on a fixed fulcrum 14f mounted on the containing body 11, respectively 14g, mounted on the containing body 12.
  • the pair of torsion springs 16 is disposed in a spiral around the fixed fulcrum 14g.
  • the magnet 17 is mounted in the containing body 11 so as to cooperate with the arm 19 and in particular to attract it toward itself, until it is in contact, when the hinge 210 is in the closed position ( figs. 20 and 21 ).
  • a ferromagnetic element can be associated to the arm 19, so that the magnet 17 will directly contact the former rather than the arm 19.
  • the concealed hinges 10, 110, 210 comprise at least one elastic element (torsion springs 16) associated to the hinging kinematism 13 in order to apply to the latter a force tending to maintain or return the two containing bodies 11 and 12 in a closed position, and that at least one magnetic element (magnet 17) is provided inside at least one of the containing bodies 11 and 12 and acts on at least one of the mobile parts (sliding fulcrum 14a, crank-type lever 18, or arm 19) which make up the hinging kinematism 13, in order to contribute to maintaining or returning the two containing bodies 11 and 12 in a closed position.
  • torsion springs or traction springs can be provided in addition to or in substitution of torsion springs 16, as explained in the part concerning the background of the invention.
  • adjustment members can be provided that allow the reciprocal adjustment of the two containing bodies 11 and 12.
  • adjustment members can also be provided to adjust the position of the magnetic element 17, so as to be able to distance it from or bring it nearer to the sliding fulcrum 14a, the crank-type lever 18 or the arm 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Window Of Vehicle (AREA)
EP14161168.1A 2013-03-22 2014-03-21 Charnière masquée avec dispositif automatique de rappel à une position de fermeture Active EP2781676B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000043A ITUD20130043A1 (it) 2013-03-22 2013-03-22 Cerniera a scomparsa con dispositivo automatico di ritorno verso una posizione di chiusura

Publications (2)

Publication Number Publication Date
EP2781676A1 true EP2781676A1 (fr) 2014-09-24
EP2781676B1 EP2781676B1 (fr) 2016-03-16

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EP14161168.1A Active EP2781676B1 (fr) 2013-03-22 2014-03-21 Charnière masquée avec dispositif automatique de rappel à une position de fermeture

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EP (1) EP2781676B1 (fr)
IT (1) ITUD20130043A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107663980A (zh) * 2016-07-27 2018-02-06 邹国和 磁斥式铰链器
TWI676097B (zh) * 2017-07-16 2019-11-01 仁寶電腦工業股份有限公司 轉軸結構與應用此轉軸結構的電子裝置
US10655375B2 (en) * 2018-01-18 2020-05-19 Alpha Guardian Security safe hinge
WO2021006096A1 (fr) * 2019-07-11 2021-01-14 スガツネ工業株式会社 Dispositif de charnière
US11214999B2 (en) * 2017-02-13 2022-01-04 Hewlett-Packard Development Company, L.P. Friction hinges
US20240110421A1 (en) * 2021-02-09 2024-04-04 Guangdong Mingmen Locks Industry Co., Ltd. Door hinge
CN118309334A (zh) * 2024-06-07 2024-07-09 佛山市凯锐德金属制品有限公司 一种带自动缓冲功能的隐藏式门铰

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892584A (en) 1931-11-10 1932-12-27 John O Olson Spring hinge
US3004280A (en) 1960-06-14 1961-10-17 Joseph P Stein Self-closing concealed hinge
EP0352912A1 (fr) 1988-07-05 1990-01-31 UNIVERSAL INDUSTRIAL PRODUCTS CO. (a Nevada corporation) Charnière invisible à fermeture automatique avec force de fermeture sélectivement variable
JPH0552181U (ja) 1991-12-16 1993-07-09 榎本金属株式会社 折り戸
EP1857624A1 (fr) 2006-05-19 2007-11-21 Ford Global Technologies, LLC Charnière cachée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892584A (en) 1931-11-10 1932-12-27 John O Olson Spring hinge
US3004280A (en) 1960-06-14 1961-10-17 Joseph P Stein Self-closing concealed hinge
EP0352912A1 (fr) 1988-07-05 1990-01-31 UNIVERSAL INDUSTRIAL PRODUCTS CO. (a Nevada corporation) Charnière invisible à fermeture automatique avec force de fermeture sélectivement variable
JPH0552181U (ja) 1991-12-16 1993-07-09 榎本金属株式会社 折り戸
EP1857624A1 (fr) 2006-05-19 2007-11-21 Ford Global Technologies, LLC Charnière cachée

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107663980A (zh) * 2016-07-27 2018-02-06 邹国和 磁斥式铰链器
CN107663980B (zh) * 2016-07-27 2019-07-09 邹国和 磁斥式铰链器
US11214999B2 (en) * 2017-02-13 2022-01-04 Hewlett-Packard Development Company, L.P. Friction hinges
TWI676097B (zh) * 2017-07-16 2019-11-01 仁寶電腦工業股份有限公司 轉軸結構與應用此轉軸結構的電子裝置
US10655375B2 (en) * 2018-01-18 2020-05-19 Alpha Guardian Security safe hinge
WO2021006096A1 (fr) * 2019-07-11 2021-01-14 スガツネ工業株式会社 Dispositif de charnière
CN114144563A (zh) * 2019-07-11 2022-03-04 世嘉智尼工业株式会社 合叶装置
EP3998409A4 (fr) * 2019-07-11 2023-07-12 Sugatsune Kogyo Co., Ltd. Dispositif de charnière
CN114144563B (zh) * 2019-07-11 2023-09-05 世嘉智尼工业株式会社 合叶装置
US11788331B2 (en) 2019-07-11 2023-10-17 Sugatsune Kogyo Co., Ltd. Hinge device
US20240110421A1 (en) * 2021-02-09 2024-04-04 Guangdong Mingmen Locks Industry Co., Ltd. Door hinge
CN118309334A (zh) * 2024-06-07 2024-07-09 佛山市凯锐德金属制品有限公司 一种带自动缓冲功能的隐藏式门铰

Also Published As

Publication number Publication date
ITUD20130043A1 (it) 2014-09-23
EP2781676B1 (fr) 2016-03-16

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