EP0894936A1 - Absturzsicherung für vertikal einziehbare Verschlusseinrichtungen mit einem auf einem festen Rohr montierten Rolladen - Google Patents

Absturzsicherung für vertikal einziehbare Verschlusseinrichtungen mit einem auf einem festen Rohr montierten Rolladen Download PDF

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Publication number
EP0894936A1
EP0894936A1 EP98390012A EP98390012A EP0894936A1 EP 0894936 A1 EP0894936 A1 EP 0894936A1 EP 98390012 A EP98390012 A EP 98390012A EP 98390012 A EP98390012 A EP 98390012A EP 0894936 A1 EP0894936 A1 EP 0894936A1
Authority
EP
European Patent Office
Prior art keywords
blocking
safety device
flange
fixed
fixed tube
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
EP98390012A
Other languages
English (en)
French (fr)
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EP0894936B1 (de
Inventor
Serge Rohaut
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0894936A1 publication Critical patent/EP0894936A1/de
Application granted granted Critical
Publication of EP0894936B1 publication Critical patent/EP0894936B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping

Definitions

  • the invention relates to a safety device for closing vertical erasure provided with an apron mounted around a fixed tube, said device for safety being intended to prevent the apron from falling in the event of an element failure of the carrier system of said curtain.
  • a plurality of security systems designed according to the same principle and generally comprising a shaped part disc, or rotor, adapted to be secured to the rotary tube so as to be driven in rotation with the latter, at least one stop piece pivotally mounted on the rotor around an axis parallel to the axis of the rotary tube, and a fixed part, or stator, of shape general annular, arranged around the rotor and provided with an internal peripheral face having housings for blocking the free end of the stop piece.
  • the principle of all these safety devices is to use the centrifugal force exerted on each pivoting stop piece, to bring this last in an apron locking position when this centrifugal force becomes too large, corresponding to an abnormal excessive speed of unfolding of the curtain.
  • these safety devices have stop pieces which are subject to kickback when the curtain rotates, which should be controlled if we want to guarantee their effectiveness.
  • the rebound phenomenon is avoided thanks to to the combined shape of the end of the stop piece and the grooves which allows to obtain a jamming effect of said abutment piece inside one of said gorges.
  • stator is deformed by residual way and the subsequent operation of the safety device is no longer guaranteed, so the latter must also be replaced in this case.
  • the present invention aims to overcome this drawback and has for essential objective of providing a locking safety device with a deck mounted around a fixed tube, allowing the deck to descend completely once said device is activated.
  • Another object of the invention is to provide a device for safety causing no wear during normal operation of the curtain.
  • the principle according to the invention therefore also consists in using the centrifugal force exerted on a blocking member associated with means elastic to bring the latter into a locking position of the apron when the centrifugal force becomes too great, corresponding to excessive speed representative of the failure of a driving element.
  • this safety device including each blocking element rotates with the apron around the fixed tube, and one of which said blocking elements is housed in a radial opening of a flange fixed integral with said fixed tube with its end in the shape of a claw extending in the extension of this opening, in the event of a motor element breaking, allows to control the rebound phenomenon without leading to any deterioration of said security device.
  • the rebound of the blocking element cannot intervene because the peripheral rim delimiting the opening in which penetrates said blocking element is located radially inside the end in claw shape of the latter and therefore acts as a radial stop preventing its pivot to its normal operating position. So, in the first place, such safety device proves to be of excellent reliability.
  • such a safety device has no rotating element in contact with a fixed element so that there are no wearing parts.
  • this safety device does not have to be replaced and can be reused as it is after the rupture of a driving element.
  • each radial opening of the fixed flange is formed on a peripheral portion of said flange arranged to be along the portion of upward path of the axis articulation of each locking member, according to the direction of descent of the deck.
  • each locking element leads, in fact, each locking element to be pivoted not only under the effect of an increase centrifugal force but under the effect of this force plus its own weight said blocking element. Therefore, this safety device has a time of very fast reaction, and can also be calibrated very precisely by means of an adequate calibration of the elastic means.
  • the fixed flange consists of a disc with spaced return elements on its periphery perpendicular to said disc, delimiting slots forming the openings of blocking.
  • This design makes it possible, in fact, to produce, by welding inserts or by folding using unsophisticated techniques, returns with a substantial thickness capable of avoiding any risk of deformation of these when the safety device is activated.
  • the security device includes two returns arranged substantially over a quarter of the circumference of the disc extending from the lower generator thereof. The presence of two successive radial blocking openings thus constitute double security locking the apron.
  • the flange mobile consists of a disc with a diameter significantly larger than that of the disc of the fixed flange, provided with a peripheral rim arranged to cover radially the blocking openings of said fixed flange.
  • the security preferably comprises at least two blocking elements, the articulation axes are distributed symmetrically with respect to the axis of the fixed tube.
  • these blocking elements are in number of three arranged so that their axes of articulation form the vertices of a equilateral triangle centered on the axis of the fixed tube.
  • the means elastic associated with each blocking element consist of a spring arranged to tend to rotate said blocking member towards the axis of the fixed tube.
  • the movable flange then has, for each locking element, an element limit stop for pivoting of said blocking element under the action of spring.
  • each element blocking device is provided, near its claw-shaped end, with a transverse notch capable of covering the peripheral edge portion of the flange fixed delimiting an opening after pivoting of said blocking element.
  • Such a notch by covering the peripheral rim of the fixed flange, forms a radial stop limiting the pivoting of the elements blocking.
  • the notch of each blocking element has a rear wall inclined towards the rear, in considering the direction of rotation of said locking element, the peripheral rim of the fixed flange having at each opening a bevelled edge inclination combined with that of said bottom wall.
  • This safety device firstly comprises a flange fixed 9 having the shape of a disc 10 pierced with a central hole of diameter substantially greater than that of the fixed tube 1, and welded, around the periphery of this orifice, on a sheath 11 of internal diameter conjugated with the external diameter of said fixed tube, said sheath being pierced with diametrically opposite radial orifices making it possible to secure to the fixed tube 1 by means of a screw / nut assembly 1 la.
  • This fixed flange 9 further comprises a peripheral rim 12, presenting substantially over a quarter of the circumference of said flange, a portion 13 of lesser height.
  • This fixed flange 9 also comprises two peripheral notches (masked in the figures) in with regard to which the peripheral rim portion 13 is interrupted, said notches being respectively provided at one of the end zones and in the central zone of this peripheral rim portion 13.
  • This fixed flange 9 finally comprises two stop parts 14, 15 L-shaped, one of the branches of which is welded to the external face of said flange fixed, and the other branch 14a, 15a of which is housed in a notch, so as to form a stop height greater than that of the peripheral rim 12, delimiting with the latter respectively two radial openings 16, 17.
  • the face lateral of this branch 14a, 15a, of abutment of the locking elements has a obviously 18 of triangular section, arranged so as to be on the trajectory of said blocking elements.
  • the fixed flange 9 is arranged so that the peripheral rim portion 13 extends, starting from the lower generator of disc 10, in the left portion of the dial of said disc, if we consider the direction of descent of the deck 8 materialized by the arrow F.
  • the safety device also includes a second movable flange 19 arranged to be welded or fixed by means of bolts on the face internal curved plates 6, 7 connecting the coils 5, so as to be driven in rotation with the latter and the deck 8, and arranged opposite the fixed flange 9 of so as to form a housing with the latter.
  • This movable flange 19 also has the shape of a disc. 20 pierced with a central orifice allowing it to be mounted around the fixed tube 1.
  • a cage of ball bearings 22 is interposed between the fixed tube 1 and the disc 20, and held on the latter by means of a plate 21 forming an external cage.
  • This flange 19 also has a peripheral rim cylindrical 23 obtained by folding arranged to radially cover the rim peripheral 12 of the fixed flange 9, and to be secured to the curved plates 6, 7.
  • This mobile flange 19 is also equipped with three knives blocking 25, 26, 27 rectilinear with a thinned front end in the form of claw such as 25a.
  • Each of these knives 25-27 also has a transverse notch 40 delimiting its claw-shaped end portion 25a and adapted to cover the branch 14a, 15a of the abutment pieces 14, 15 during blocking of the device.
  • This notch 40 also has a bottom wall 40a inclined conjugate of the recess 18 of the abutment pieces 14, 15.
  • These knives 25-27 are mounted on the disc 20, in line with their rear end by means of articulation axes consisting of each of said knives, and as shown in FIG. 3, in a screw 28 / nut 29 system and in three washers 30, 31, 41 interposed on either side of said disc and said knives.
  • the axes of articulation of the knives 25-27 are evenly distributed on the disc 20 and form the vertices an equilateral triangle centered on the axis of said disc, so that said knives extend along cords of the latter, their claw 25a being at a short distance radial, of the order of two millimeters, from the peripheral edge 12 of the fixed flange 9.
  • the knives 25-27 pivot about their axis of articulation, and one of said knives, in the example knife 25, comes first place slide on the portion of the peripheral rim 13, in the radial opening 16, then abut against the stop piece 14, the second stop piece 15 being only designed to increase security.
  • the notch 40 covers the branch 14a of this abutment piece at the recess 18 so that the bottom wall 40a of this notch 40 collects the first stop shock.
  • the second stop shock is received by the wall adjacent transverse of this notch 40 which is pressed radially against the abutment piece 14 and thereby limits the pivoting of the knife 25.
  • any risk of kickback is negated because the shaped end knife claw 25a slides radially outside of the stop piece 14.
  • Another safety criterion guaranteeing the blocking of the apron 8 resides in the fact that the abutment pieces 14, 15 are arranged along the portion upward path of the knuckle axes 25-27, if we consider the direction of flow F. As a result, the weight of the knives 25-27 adds up centrifugal force and therefore promotes the pivoting of the latter.
  • one of the primary advantages of the safety according to the invention resides in the fact that, once the apron 8 is blocked, such as shown in Figure 4, the knife 25 can be unlocked very simply by lifting somewhat said apron, and the latter can then be lowered completely from manually, allowing direct access to the winding system (springs compensators 4 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Tents Or Canopies (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Casings For Electric Apparatus (AREA)
  • Emergency Lowering Means (AREA)
EP98390012A 1997-07-29 1998-07-27 Absturzsicherung für vertikal einziehbare Verschlusseinrichtungen mit einem auf einem festen Rohr montierten Rolladen Expired - Lifetime EP0894936B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9709756 1997-07-29
FR9709756A FR2766868B1 (fr) 1997-07-29 1997-07-29 Dispositif de securite anti-chute pour rideau de fermeture a effacement vertical dote d'un tablier compense par des ressorts montes autour d'un tube fixe

Publications (2)

Publication Number Publication Date
EP0894936A1 true EP0894936A1 (de) 1999-02-03
EP0894936B1 EP0894936B1 (de) 2003-03-12

Family

ID=9509847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98390012A Expired - Lifetime EP0894936B1 (de) 1997-07-29 1998-07-27 Absturzsicherung für vertikal einziehbare Verschlusseinrichtungen mit einem auf einem festen Rohr montierten Rolladen

Country Status (7)

Country Link
US (1) US5971055A (de)
EP (1) EP0894936B1 (de)
AT (1) ATE234414T1 (de)
DE (1) DE69812008T2 (de)
ES (1) ES2194280T3 (de)
FR (1) FR2766868B1 (de)
PT (1) PT894936E (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20100241A1 (it) * 2010-07-29 2012-01-30 Bat Spa Dispositivo di sicurezza, per il bloccaggio della rotazione di un rullo avvolgitore per tende, a riavvolgimento automatico
WO2012093934A1 (en) * 2011-01-04 2012-07-12 Hunter Douglas Inc. Lock mechanism for a covering for architectural openings

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT1102910E (pt) * 1998-07-27 2002-09-30 Hoermann Kg Dispositivo para a monitorizacao de uma mola
US6315089B1 (en) * 1999-08-31 2001-11-13 Morgan Marshall Industries, Inc. Safety lock device with rotating clover mechanism
EP1213428A1 (de) * 2000-12-07 2002-06-12 Flexi-Force B.V. Absturzsicherung
AU2003209903A1 (en) * 2002-03-19 2003-09-29 Canimex Inc. Safety braking device for counterbalancing system of garage doors and the like
US7543625B2 (en) * 2002-03-19 2009-06-09 Canimex Inc. Brake device for garage doors and the like, and door assembly including the same
FR2837866B1 (fr) * 2002-03-28 2005-09-23 Simu Dispositif de securite et mecanisme de manoeuvre d'une installation de fermeture ou de protection solaire incorporant un tel dispositif
AUPS224902A0 (en) * 2002-05-13 2002-06-13 Ozroll Ip Pty Ltd A shutter assembly
US7254868B2 (en) * 2004-12-27 2007-08-14 Wayne-Dalton Corp. winding and anti-drop assembly for door counterbalance system
US7428918B2 (en) * 2005-04-19 2008-09-30 Martin Door Manufacturing, Inc. Controlled descent device
WO2007090271A1 (en) * 2006-02-06 2007-08-16 Canimex Inc. Brake device for garage doors and the like, kit for assembling the same, and door assembly provided with the brake device
TW201114629A (en) * 2009-10-28 2011-05-01 Macauto Ind Co Ltd Vehicle safety protection device
AU2010362540B2 (en) * 2010-10-15 2015-07-09 Chamberlain Australia Pty Ltd A stop lock for use in a barrier system
TWI494500B (zh) * 2013-10-14 2015-08-01 Unidirectional centrifugal mechanism of door machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2433544A1 (de) 1973-02-24 1976-01-22 Neukirchen W U H Sicherung an wellen von rollaeden, rolltoren u.dgl.
US5494093A (en) 1994-06-14 1996-02-27 Wayne-Dalton Corp. Rolling door stop apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1842123A (en) * 1929-02-25 1932-01-19 Kinnear Mfg Co Release and brake for fire resisting curtains
US2019085A (en) * 1931-12-23 1935-10-29 R C Mahon Company Governor for closure members
US3842892A (en) * 1973-07-27 1974-10-22 Rcm Corp Rolling door operating mechanism
US4112996A (en) * 1975-06-03 1978-09-12 Repa Feinstanzwerk Gmbh Safety device for arresting unrolling of roller blinds
US4125142A (en) * 1975-06-03 1978-11-14 Repa Feinstanzwerk Gmbh Safety device protecting roller blinds against unrolling
US4704914A (en) * 1986-03-21 1987-11-10 Horng Jin Shan Chain breakdown safety device for a power-driven roller door

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2433544A1 (de) 1973-02-24 1976-01-22 Neukirchen W U H Sicherung an wellen von rollaeden, rolltoren u.dgl.
US5494093A (en) 1994-06-14 1996-02-27 Wayne-Dalton Corp. Rolling door stop apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20100241A1 (it) * 2010-07-29 2012-01-30 Bat Spa Dispositivo di sicurezza, per il bloccaggio della rotazione di un rullo avvolgitore per tende, a riavvolgimento automatico
WO2012093934A1 (en) * 2011-01-04 2012-07-12 Hunter Douglas Inc. Lock mechanism for a covering for architectural openings

Also Published As

Publication number Publication date
FR2766868A1 (fr) 1999-02-05
DE69812008D1 (de) 2003-04-17
PT894936E (pt) 2003-06-30
ES2194280T3 (es) 2003-11-16
EP0894936B1 (de) 2003-03-12
ATE234414T1 (de) 2003-03-15
DE69812008T2 (de) 2004-01-15
US5971055A (en) 1999-10-26
FR2766868B1 (fr) 1999-09-24

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