EP0713948A1 - Dämpfervorrichtung zum Dämpfen von, durch Öffnungsvorrichtungen angetriebenen, Türen, schubladen und dgl. - Google Patents

Dämpfervorrichtung zum Dämpfen von, durch Öffnungsvorrichtungen angetriebenen, Türen, schubladen und dgl. Download PDF

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Publication number
EP0713948A1
EP0713948A1 EP95117507A EP95117507A EP0713948A1 EP 0713948 A1 EP0713948 A1 EP 0713948A1 EP 95117507 A EP95117507 A EP 95117507A EP 95117507 A EP95117507 A EP 95117507A EP 0713948 A1 EP0713948 A1 EP 0713948A1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
grease
slowing
spaces
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
EP95117507A
Other languages
English (en)
French (fr)
Other versions
EP0713948B1 (de
Inventor
Claudio Davico
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.)
Foggini Progetti SRL
Original Assignee
Foggini Progetti 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
Application filed by Foggini Progetti SRL filed Critical Foggini Progetti SRL
Publication of EP0713948A1 publication Critical patent/EP0713948A1/de
Application granted granted Critical
Publication of EP0713948B1 publication Critical patent/EP0713948B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/14—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with fluid brakes of the rotary type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/473—Braking devices, e.g. linear or rotational dampers or friction brakes; Buffers; End stops
    • 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
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/254—Fluid or viscous friction
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/262—Type of motion, e.g. braking
    • E05Y2201/266—Type of motion, e.g. braking rotary
    • 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

Definitions

  • the present invention relates to a damping device for slowing or braking the motion of doors, drawers and the like, that are subjected to powered-opening means.
  • Doors and drawers in general are conventionally subjected to the action of elastic means adapted to produce their powered opening and to control the action of said means by virtue of slowing or braking devices that prevent the opening action from occurring in a sudden fashion, with consequent impact stresses both on the structure of the drawer or door and on the contents of the drawer or of the compartment protected by the door.
  • these systems use conventional slowing devices in which the slowing action is produced by a highly viscous fluid, typically grease, that is interposed between a stator and a rotor that are both cylindrical and provided with respective series of interpenetrating cylindrical ribs, or between a stator with a cylindrical chamber inside which a rotor disk provided with radial slots turns; both devices are provided with one or more elastomeric sealing rings, and the stator is rigidly coupled to the fixed structure, whereas the rotor, by virtue of appropriate linkages, is rigidly coupled to the drawer or door the opening whereof must be slowed.
  • a highly viscous fluid typically grease
  • a principal aim of the present invention is to eliminate the above-mentioned drawbacks of conventional slowing devices, and within the scope of this general aim it has the important object of providing a damping device in which the slowing action is produced exclusively by grease, which is structured and configured so as to allow significant bulk reductions and high operating reliability.
  • Another object of the invention is to provide a damping device that is highly simplified, and in particular is composed of two parts only, that can be mass-produced with low manufacturing and assembly costs and is therefore particularly suitable for installations in trims even for low-cost motor vehicles.
  • Another object of the invention is to provide a damping or slowing device that is based on the slowing action of mineral fluid as specified and is capable of ensuring, despite its great structural simplicity, effective tightness against seepages of said fluid even in demanding operating conditions, particularly in case of high ambient temperature.
  • the damping device comprises a stator, made of thermoplastic material, with a central pivot that is flexible in a radial direction, for the snap-on connection of a rotor, also made of thermoplastic material, which is provided with a blind hole for accommodating the pivot.
  • the stator is in turn cup-shaped so as to internally accommodate part of the rotor and comprises a single cylindrical ridge, which is concentric to the central pivot and separates two annular chambers, respectively an inner chamber and an outer chamber. These chambers accommodate, with an appropriate clearance, corresponding inner and outer cylindrical portions of the rotor; the inner portion is discontinuous and is shaped by cylindrical sectors separated by empty spaces.
  • Grease is interposed in the annular spaces that lie between the chambers of the stator and the cylindrical portions of the rotor and in the spaces between the sectors of the inner cylindrical portion of the rotor; the outward seepage of said grease is prevented by the action of a flexible edge lip of the outer cylindrical portion of the stator; said lip engages, by elastic deformation, a corresponding flared portion of the wall of the cavity of the rotor.
  • the stator is provided with flaps, which may be of the snap-on type, for anchoring to the fixed structure, and the rotor is provided with an external set of teeth adapted to make meshing contact with a rack or with a toothed sector rigidly coupled to the drawer and respectively to the door the opening whereof is to be controlled.
  • the reference numeral 10 generally designates the slowing or damping device
  • the reference numeral 11 designates the stator
  • the reference numeral 12 designates the rotor of said device; both have a circular cross-section and are made of thermoplastic material
  • the stator is rigidly coupled to a generic fixed structure, by virtue of anchoring flaps 11a that are optionally of the snap-on type
  • the rotor is rigidly coupled to the drawer or door that is slideable with respect to said fixed structure or is hinged thereto respectively.
  • the rotor 12 is provided with a portion 12a shaped like a toothed pinion and adapted to mesh with a corresponding rack or respectively with a toothed sector that are supported by said drawers and door and are not shown in the figure.
  • the stator 11 is cup-shaped and is provided with a central pivot 13 radially flexible for the snap-on connection of the rotor 12; said rotor is in turn provided with a blind hole 14 for accommodating the pivot 13.
  • the radial flexibility of the pivot 13 is achieved by virtue of longitudinal slots 13a formed on said pivot, and the mutual snap-together engagement of the pivot and of the rotor is achieved by providing a trapezoidal groove 13b on the pivot, said groove being engageable by a protruding collar 14b that correspondingly has a trapezoidal profile and is provided on the inner wall of the cavity 14 of the rotor.
  • the cup-shaped profile of the stator 11 is delimited by an outer cylindrical wall 15 that lies concentrically to the pivot 13 is connected to the closed bottom 16 of the stator, by means of a frustum-shaped chamfered portion 15a that tapers towards said bottom.
  • a cylindrical ridge 17 furthermore protrudes from the bottom 16 and is also concentric to the pivot 13; said ridge, together with the pivot 13 and the wall 15, separates and delimits two annular chambers 18 and 19, respectively an inner chamber and an outer chamber.
  • the axial extension of the ridge 17 is 80-85% of the corresponding axial extension of the cylindrical wall 15.
  • the annular chambers 18 and 19 receive, with an appropriate clearance, corresponding inner and outer cylindrical portions 20 and 21 of said rotor 12, so that said rotor and said stator, when assembled, mutually interpenetrate.
  • the inner portion 20 of the rotor 12 is discontinuous and is formed by cylindrical sectors 20a, separated by spacing gaps 20b (figure 5).
  • the clearance between the mutually interpenetrating elements 18,19,20,21 of said stator and rotor, which is advantageously between 10 and 20 tenths of a millimeter, and the empty spaces 20b of the cylindrical portion 20 of the rotor, are filled with grease G, preferably injected in a vacuum into said clearances and spaces to avoid the formation of air bubbles.
  • the layer of grease interposed between the stator 11 and the rotor 12 acts as a means for slowing the mutual rotation of said elements, producing, substantially by virtue of the spaces 20b, a braking torque that is a direct function of the density of said grease.
  • the density of the grease is chosen between 1 and 1.5 grams per cubic centimeter at 20 o C.
  • the injected grease can receive the addition of anhydrous aluminum oxide, in percentages that can vary between 10 and 20% by weight, which improves its stability in terms of variations in viscosity produced by humidity and/or temperature.
  • Tightness against outward seepage of the grease is entrusted to the outer cylindrical portion 21 of the rotor 12.
  • said portion ends with a lip 22 that is moderately sharp and flexible and is capable of cooperating, by deforming, in forced-contact engagement with the chamfered frustum-shaped portion 15a of the wall 15 of the stator (figure 1).
  • An additional sealing element is preferably provided on the outer face of the cylindrical portion 21 and is constituted by a protruding annular ridge 23 having a triangular profile and adapted to cooperate with a correspondingly profiled groove 24 provided on the inner face of the wall 15 of the stator.
  • the minimum diameter of the stator 11 can be between 5 and 15 mm and the minimum axial extension is between 15 and 20 mm, yet the device is capable of developing a braking torque that is sufficient for most applications, whereas the mutually cooperating lip 22 and wall 15a ensure excellent tightness against grease seepage, with absolutely no elastomeric gaskets and/or labyrinths with multiple concentric ridges that complicate conventional structures and prevent size containment within the specified limits.

Landscapes

  • Fluid-Damping Devices (AREA)
  • Vending Machines For Individual Products (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP95117507A 1994-11-25 1995-11-07 Dämpfervorrichtung zum Dämpfen von, durch Öffnungsvorrichtungen angetriebenen, Türen, schubladen und dgl. Expired - Lifetime EP0713948B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94TO000237U IT232580Y1 (it) 1994-11-25 1994-11-25 Dispositivo di rallentamento di sportelli, cassetti e simili soggetti a mezzi di apertura comandata.
ITTO940237U 1994-11-25

Publications (2)

Publication Number Publication Date
EP0713948A1 true EP0713948A1 (de) 1996-05-29
EP0713948B1 EP0713948B1 (de) 1998-02-25

Family

ID=11412398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117507A Expired - Lifetime EP0713948B1 (de) 1994-11-25 1995-11-07 Dämpfervorrichtung zum Dämpfen von, durch Öffnungsvorrichtungen angetriebenen, Türen, schubladen und dgl.

Country Status (3)

Country Link
EP (1) EP0713948B1 (de)
DE (1) DE69501657T2 (de)
IT (1) IT232580Y1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746978A1 (de) * 1997-10-24 1999-04-29 Wanzl Metallwarenfabrik Kg Drehkreuz für einen Personendurchgang
EP1510148A1 (de) * 2003-08-26 2005-03-02 L'oreal Gehäuse mit einer Schublade und einem an der Schublade gelenkartig angebrachten Spiegel
FR2866539A1 (fr) * 2004-02-23 2005-08-26 Seb Sa Appareil electromenager a panneaux articules
NL2000826C2 (nl) * 2007-08-22 2009-02-25 Brabantia Nederland Bv Opslagtrommel, in het bijzonder voor het opbergen van levensmiddelen, meer in het bijzonder voor het opbergen van brood.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199242A2 (de) * 1985-04-24 1986-10-29 FOGGINI PROGETTI S.r.l. Steuervorrichtung für Türen, Schubladen und ähnliche bewegliche Teile
DE4119090A1 (de) * 1990-06-11 1991-12-12 Nifco Inc Drehdaempfer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199242A2 (de) * 1985-04-24 1986-10-29 FOGGINI PROGETTI S.r.l. Steuervorrichtung für Türen, Schubladen und ähnliche bewegliche Teile
DE4119090A1 (de) * 1990-06-11 1991-12-12 Nifco Inc Drehdaempfer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746978A1 (de) * 1997-10-24 1999-04-29 Wanzl Metallwarenfabrik Kg Drehkreuz für einen Personendurchgang
EP1510148A1 (de) * 2003-08-26 2005-03-02 L'oreal Gehäuse mit einer Schublade und einem an der Schublade gelenkartig angebrachten Spiegel
FR2863838A1 (fr) * 2003-08-26 2005-06-24 Oreal Boitier comportant un tiroir et un miroir articule sur ce tiroir
FR2866539A1 (fr) * 2004-02-23 2005-08-26 Seb Sa Appareil electromenager a panneaux articules
NL2000826C2 (nl) * 2007-08-22 2009-02-25 Brabantia Nederland Bv Opslagtrommel, in het bijzonder voor het opbergen van levensmiddelen, meer in het bijzonder voor het opbergen van brood.
EP2027803A1 (de) * 2007-08-22 2009-02-25 Brabantia Nederland B.V. Aufbewahrungsbehälter, insbesondere zur Aufbewahrung von Lebensmitteln, speziell für Brot

Also Published As

Publication number Publication date
DE69501657D1 (de) 1998-04-02
EP0713948B1 (de) 1998-02-25
ITTO940237U1 (it) 1996-05-25
IT232580Y1 (it) 2000-01-10
DE69501657T2 (de) 1998-06-18
ITTO940237V0 (it) 1994-11-25

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