US3276164A - Mechanism for controlling the closure member for a passage opening - Google Patents

Mechanism for controlling the closure member for a passage opening Download PDF

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Publication number
US3276164A
US3276164A US405433A US40543364A US3276164A US 3276164 A US3276164 A US 3276164A US 405433 A US405433 A US 405433A US 40543364 A US40543364 A US 40543364A US 3276164 A US3276164 A US 3276164A
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Prior art keywords
closure member
piston
actuating
cylinder
closing
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US405433A
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English (en)
Inventor
Karl E Hilfing
Sven B Agren
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Hagglund and Soner AB
Haegglund and Soener AB
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Haegglund and Soener AB
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    • 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
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators

Definitions

  • FIG. 2 MECHANISM FOR CONTROLLING THE CLOSURE MEMBER FOR A PASSAGE OPENING Filed Oct. 21. 1964 FIG. 2
  • the present invention relates to a mechanism for operating a closure member such as a slidable hatch or a swinging door for closing a passage opening and, more particularly, to a closing mechanism of this kind including a safety device which prevents a continuing advance of the closure member towards its closing position when the closing path of the closure member is obstructed by an animated or unanimated obstacle, to prevent injury to a human or an animal and damage to any article which may have been inadvertently placed in the pathway of the closure member.
  • a closure member such as a slidable hatch or a swinging door for closing a passage opening
  • a closing mechanism of this kind including a safety device which prevents a continuing advance of the closure member towards its closing position when the closing path of the closure member is obstructed by an animated or unanimated obstacle, to prevent injury to a human or an animal and damage to any article which may have been inadvertently placed in the pathway of the closure member.
  • a more specific object of the invention is to provide a novel and improved closing mechanism in which a safety device including a sensing or detecting means disposed in the closing path of the closure member, preferably in the limit position of the closure member when closing the opening, is actuated by the pressure exerted by an obstacle upon the sensing or detecting means, the safety device when actuated, stopping a further advance of the closure member.
  • a safety device including a sensing or detecting means disposed in the closing path of the closure member, preferably in the limit position of the closure member when closing the opening, is actuated by the pressure exerted by an obstacle upon the sensing or detecting means, the safety device when actuated, stopping a further advance of the closure member.
  • Another more specific object of the invention is to provide a novel and improved closing mechanism including a safety device which causes a limited return movement of the closure member when the same is stopped in its advance towards the closing position by an obstacle in its path.
  • FIG. 1 is a diagrammatic view, partly in section, of a closing mechanism including a safety device according to the invention applied to a sliding closure member, and
  • FIG. 2 is a fragmentary sectional view of a modification of the safety device applied to a swinging closure member.
  • FIG. 1 shows the application of the mechanism and the safety device of the invention to a slidable door or hatch 10. Movement of the hatch into and out of its closing position is effected by a hydraulic drive means shown as comprising a cylinder 12 in which a plunger or piston 12' is slidable.
  • the piston is drivingly coupled with the hatch so that the position of the piston in the cylinder will control the position of the hatch.
  • the hatch when moving into the direction of the arrow 14, that is into the closing position, coacts with a detecting or sensing device 16, preferably placed so that the tip of hatch 10 will coact with the detecting device 16 when the hatch is in its closing position.
  • Device 16 comprises a two-arm lever 18 pivotally in counterclockwise direction about a pivot 20 against the action of spring 22.
  • This spring urges the lever into a ice position in which it abuts against a stationary abutment member 24, that is into the illustrated position.
  • an obstacle pushed against the respective arm of lever 18, which preferably supports a nose 18a of a suitable soft material such as foam rubber, by the advancing tip 10 will cause turning of lever 18 in counterclockwise direction.
  • Lever 18 is coupled by a suitable transmission or linkage diagrammatically indicated at 30 with a slide 26 of a safety valve 28.
  • the aforementioned tilting of lever 18 will cause the slide to move toward the right from the illustrated position.
  • Such displacement is utilized to stop the further advance of hatch 10 toward its closing position and also if desired to move the hatch a short distance towards its opening position, as will be more fully explained hereinafter.
  • Valve slide 26 supports a control piston 32 and includes a lengthwise control channel or duct 34 terminating at both ends in ports in the peripheral wall of the slide.
  • Piston 44 is formed with two parallel tranverse ducts 44a and 44b and piston 46 includes two crossing ducts 46a and 46b.
  • the cylinder 42a further accommodates a control piston 48 which is rigidly secured to tandem pistons 44 and 46 by piston rods 50 and 52.
  • the upper piston 44 is linked by means of a link 54 to a pivotally mounted operating handle 56. Downward tilting of handle 56, that is in the direction of arrow S, causes closing of hatch 10 and upward tilting of the handle, that is in the direction of the arrow 0, causes opening of the hatch, as will be more fully explained hereinafter.
  • Springs 58 and 60 bias the handle into the illustrated neutral position.
  • piston 46 When it is desired to open the hatch and handle 56 is accordingly lifted, piston 46 is placed into a position such that conduit 62 is connected with the conduit 40 through duct 46a of piston 46. Accordingly, pressure fluid will be supplied through conduit 40, cylinder 28a of valve 28 and conduit 38 to the lefthand side of cylinder 12, thereby causing a corresponding movement of piston 12' and with it of hatch toward the right. The pressure fluid contained in the right hand part of cylinder 12 will be discharged through conduit 64, duct 46b of piston 46, conduit 66 into the container 68.
  • the cylinder space 48' below the aforementioned control piston or plunger 48 is connected with the discharge 7 conduit 66 through a conduit 72 including a control valve '74. This valve may be adjusted so that pressure fluid in cylinder space 48 is discharged therefrom at a selected rate of discharge. Cylinder space. 48 is connected by a conduit 36 to a port 36a in a cylinder 28a encompassing valve slide 26.
  • the safety valve will remain inactive during closing or opening of batch 10 if the closing path of the hatch is not obstructed, or, in other words, if no control action is exerted upon the sensing or detecting device 16.
  • an obstacle such as a person is caught7 between the advancing hatch and the device 16, resulting physical pressure upon the detecting device will cause the lever 18 thereof to be tilted in counterclockwise direction as previously described.
  • piston 32 will be forced toward the right and the pressure fluid discharged from the left side of the cylinder as previously described during the closing movement of the hatch, will now flow through conduit 38, the cylinder space between piston 32 and cylinder wall 28', dust 34 of slide port 36a, conduit 36 into the cylinder space 48' below control piston 48. Accordingly, pressure will be built up in space 48' depending upon the setting of valve 74 and this pressure will force control piston 48 upwardly and with it piston 44 out of the position in which pressure fluid is supplied to the righthand side of piston 12 through conduit 62, duct 44a and conduit 64. As a result, the advance of the hatch toward the closing position will be stopped.
  • the activating valve 42 which is only diagrammatically indicated in the drawing and, more specifically, the ducts 44a, 44b and 46a, 46b thereof may be conveniently so arranged and dimensioned that upon actuation of safety valve 28 fluid pressure is fed into the space 48 to such an extent that the handle 56 will be swung into the opening position thereby feeding fluid pressure into the lefthand side of cylinder 12 for a period of time sufficient to move piston 12' a short distance towards the right and thereby hatch 10 a corresponding distance towards its open position. As soon as conduit 36 is closed, the further flow of pressure fluid into the space 48' below piston 48 will cease. Spring 58 will then force the operating pistons 44 and 46 back into the illustrated neutral position.
  • the pressure fluid in space 48' is discharged therefrom through conduit 72 including valve 74.
  • This valve is preferably so adjusted that the pressure upwardly acting upon piston 48 is of a magnitude such that it is practically impossible, or at least difflcult for an operator to retain handle 56 in its depressed or closing position. Hence the handle will be automatically lifted When an obstacle is present between tip 10 and the detecting device 16 during the closing operation.
  • FIG. 2 shows the mechanism adapted to a swinging door 80.
  • the mechanism and the functionv thereof will be evident from the description of FIG. 1.
  • the corresponding components are designated by the same reference numerals though primed.
  • a safety device for discontinuing the closing movement of the closure member when an obstacle is present in the path in the advancing closure member, said safety device comprising hydraulic drive means for moving the closure member into and out of a closing position, said hydraulic drive means including an actuating cylinder-piston assembly having its piston drivingly coupled to the closure member, actuating conduit means connected to said actuating cylinder-piston assembly on both sides of the piston thereof for supplying pressure fluid to one side of the cylinder and discharging fluid from the other side of the cylinder to'cause movement of the piston and with it of the closure member into one direction or the other depending upon the flow direction of the pressure fluid, an actuating valve means included in said conduit means and operable for selectively reversing the flow direction of the fluid through said actuating conduit means to effect closing and opening respectively of the closure member, a control cylinder-piston assembly having its piston drivingly coupled with said actuating valve means for controlling the operation
  • a closing device comprising operating means for actuating said valve means to operate the latter selectively for closing or opening, the closure member, said control assembly when operated by the safety valve means overriding actuation of the operating means for closing the closure member.
  • a closing device according to claim 1 where said detecting means comprise a yieldably mounted detecting member, and spring means biasing said member into a position in which said safety valve means is in its inactive position.
  • a closing'device according to claim 1 wherein a discharge conduit is connected to the cylinder of said control assembly for discharging fluid therefrom, and a flow control valve is included in said discharge conduit.
  • a closing device according to claim 1 wherein said actuating valve means comprises a cylinder and a tandempiston assembly slidable therein, one piston of said assembly including ducts connecting the actuating conduit means for a fluid flow in one direction and the other piston including ducts connecting said conduit means for a fluid flow in the opposite direction, and wherein the piston of said control assembly when actuated moves the tandempiston assembly from a first position in which the ducts 6.
  • a closing device according to claim 5 wherein said ducts in said tandem-piston assembly are arranged and dimensioned in a manner such that the fluid flow causes a limited movement of the closure member towards its open position and subsequent to the disconnection of the ducts effecting closing of the closure member due to an actuation of the detecting means.
  • said safety valve means comprises a cylinder and a piston movable therein, the position of the piston in the cylinder being controlled by said detecting means, said cylinder interconnecting said actuating conduit means for a discharge of fluid therethrough when the detecting means is inactive and connecting said actuating conduit means with the control conduit means when the piston is displaced by an actuation of the detecting means.
  • a closing device according to claim 7 wherein a slide supports said piston of the safety valve means and References Cited by the Examiner UNITED STATES PATENTS 2,832,588 4/1958 Newkirk 268-50 HARRISON R. MOSELEY, Primary Examiner.

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  • Power-Operated Mechanisms For Wings (AREA)
US405433A 1963-10-25 1964-10-21 Mechanism for controlling the closure member for a passage opening Expired - Lifetime US3276164A (en)

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SE1174163 1963-10-25

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US (1) US3276164A (de)
BE (1) BE654861A (de)
DE (1) DE1584037B1 (de)
GB (1) GB1072518A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727348A (en) * 1971-06-02 1973-04-17 Bosch Gmbh Robert Safety arrangement for powered vehicle windows, sun-roofs and the like
US3936977A (en) * 1973-12-27 1976-02-10 Kelley Company, Inc. Fluid activated load operator
US4263746A (en) * 1979-07-13 1981-04-28 Eller Harry J Reversing circuit for a powered closure
US4480753A (en) * 1979-07-12 1984-11-06 Metal Detectors, Inc. Metal detector apparatus and method
DE3629595A1 (de) * 1986-08-30 1988-03-10 Dieter Schmidt Vorichtung zum oeffnen einer sicherheits-schiebetuer, insbesondere feuertuer oder schott
US4803807A (en) * 1986-07-23 1989-02-14 Messerschmitt-Bolkow-Blohm Gmbh Safety device for a door system
US5417011A (en) * 1994-02-23 1995-05-23 Keszthelyi; Laszlo Door opening mechanism
WO2001006078A1 (es) * 1999-07-16 2001-01-25 Faiveley Española, S.A. Sistema de deteccion de obstaculos para puertas neumaticas

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926218C2 (de) * 1979-06-29 1985-10-31 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Türbetätigungsanlage
US4476678A (en) * 1980-01-31 1984-10-16 Plc Peters Limited Control mechanism for pneumatic apparatus
GB2122671A (en) * 1982-06-16 1984-01-18 Jones Frederick & Son Improvements relating to manhole covers
GB8300675D0 (en) * 1983-01-11 1983-02-09 Westinghouse Brake & Signal Pressure operated door actuator
IT210081Z2 (it) * 1987-03-23 1988-11-14 Costa Pisani Sergio Cabina perfezionata di stiratura automatica degli indumenti in genere.
GB9221735D0 (en) * 1992-10-16 1992-12-02 Dewhurst Plc Method and apparatus of operating an automatic door and bushbutton apparatus therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832588A (en) * 1954-11-19 1958-04-29 Nat Pneumatic Co Inc Control system for power operated doors equipped with obstruction detecting means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR535016A (fr) * 1915-05-21 1922-04-07 Nat Pneumatic Company Inc Mécanisme pour la commande des portes
US1531626A (en) * 1921-10-24 1925-03-31 Nat Pneumatic Co Door-operating mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832588A (en) * 1954-11-19 1958-04-29 Nat Pneumatic Co Inc Control system for power operated doors equipped with obstruction detecting means

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727348A (en) * 1971-06-02 1973-04-17 Bosch Gmbh Robert Safety arrangement for powered vehicle windows, sun-roofs and the like
US3936977A (en) * 1973-12-27 1976-02-10 Kelley Company, Inc. Fluid activated load operator
US4480753A (en) * 1979-07-12 1984-11-06 Metal Detectors, Inc. Metal detector apparatus and method
US4263746A (en) * 1979-07-13 1981-04-28 Eller Harry J Reversing circuit for a powered closure
US4803807A (en) * 1986-07-23 1989-02-14 Messerschmitt-Bolkow-Blohm Gmbh Safety device for a door system
DE3629595A1 (de) * 1986-08-30 1988-03-10 Dieter Schmidt Vorichtung zum oeffnen einer sicherheits-schiebetuer, insbesondere feuertuer oder schott
US5417011A (en) * 1994-02-23 1995-05-23 Keszthelyi; Laszlo Door opening mechanism
WO2001006078A1 (es) * 1999-07-16 2001-01-25 Faiveley Española, S.A. Sistema de deteccion de obstaculos para puertas neumaticas
ES2168907A1 (es) * 1999-07-16 2002-06-16 Faiveley Espanola Sistema de deteccion de obstaculos para puertas neumaticas.

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BE654861A (de) 1965-02-15
GB1072518A (en) 1967-06-21
DE1584037B1 (de) 1969-10-23

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