EP0146693B1 - Door closer - Google Patents

Door closer Download PDF

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Publication number
EP0146693B1
EP0146693B1 EP84110790A EP84110790A EP0146693B1 EP 0146693 B1 EP0146693 B1 EP 0146693B1 EP 84110790 A EP84110790 A EP 84110790A EP 84110790 A EP84110790 A EP 84110790A EP 0146693 B1 EP0146693 B1 EP 0146693B1
Authority
EP
European Patent Office
Prior art keywords
cam
door
support member
closer
spring
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.)
Expired
Application number
EP84110790A
Other languages
German (de)
French (fr)
Other versions
EP0146693A3 (en
EP0146693A2 (en
Inventor
Horst Tillmann
Giselher Sieg
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.)
Dorma Baubeschlag GmbH and Co KG
Original Assignee
Dorma Baubeschlag GmbH and Co KG
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 Dorma Baubeschlag GmbH and Co KG filed Critical Dorma Baubeschlag GmbH and Co KG
Priority to AT84110790T priority Critical patent/ATE43396T1/en
Publication of EP0146693A2 publication Critical patent/EP0146693A2/en
Publication of EP0146693A3 publication Critical patent/EP0146693A3/en
Application granted granted Critical
Publication of EP0146693B1 publication Critical patent/EP0146693B1/en
Expired 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
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • 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
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F2003/228—Arrangements where the end of the closer arm is sliding in a track
    • 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
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/10—Covers; Housings
    • E05Y2201/11—Covers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/47—Springs; Spring tensioners
    • E05Y2201/492—Spring tensioners, tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • 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 RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/688—Rollers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/15—Applicability
    • E05Y2800/17—Universally applicable
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/22—Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • 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—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/10—Spring actuated checks and closers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/17—Checks and closers, holding means

Definitions

  • the invention relates to an upper door closer with a closer shaft that can be actuated by a spring arrangement and with a damping piston that is operatively connected to it and with a pivotable actuating arm that is coupled to the closer shaft at one end and that fits into a guide rail via another slide piece, the closer shaft having a cam disc , whose curve path associated with the opening direction is acted upon by a spring support member via at least one roller and whose curve path associated with the closing direction is acted upon by a damping piston via a further roller.
  • An upper door closer known from NL-A 6 702 391 can be fastened to the door leaf, the closer shaft of the upper door closer being rotatably connected to an actuating arm, the free end of which engages in a guide rail arranged on the door frame.
  • the reverse assembly is also possible, the door closer housing being arranged on the frame and the guide rail for the actuating arm being arranged on the door leaf.
  • Known upper door closers of this type are always used where, for practical, but especially for optical reasons, the normally used scissor linkage of an upper door closer that is spread apart from the door is not desired.
  • Such known upper door closers with the so-called slide rail assembly have the advantage that they fit optically well into the general picture of the door, but they have a decisive disadvantage in their operation.
  • a door closer is known from CH-A 473 970, the closer shaft of which comprises a cam disc, one cam track of which is acted upon by a spring support member via rollers, while the other cam track is acted upon by a damping piston.
  • the cam tracks are symmetrical, which makes this known door closer suitable for use with doors that can be pivoted both to the right and to the left. This means that none of the cam tracks is assigned to the spring support member or the damping piston, so that the cam tracks can be designed either with respect to the opening behavior or the damping behavior of the door leaf. An optimization of both behaviors is not possible with the known door closer, although the spring support member and the damping piston cover different strokes during the same angle of rotation of the closer shaft.
  • the object of the invention is to provide an upper door closer of the type mentioned, with which a closing force and opening force characteristic can be achieved as with a door closer with scissor linkage and the damping of the door leaf is designed independently of the closing forces occurring in the same rotation angle ranges of the closer shaft can be.
  • the spring support member and also the damping piston depending on the door opening angle or angle of rotation, can be assigned predetermined strokes adapted to the opening and closing characteristics.
  • the cam track assigned to the spring support member permits a stroke that is proportional to the angle of rotation of the closer shaft and at the same time changes the angle of attack of the power transmission roller relative to the stroke curve axis, to assign the spring support member a larger or smaller stroke depending on the angle of rotation with a larger or smaller power transmission lever.
  • the closing force curve on the door leaf can be idealized in such a way that in its closed position there is a relatively high closing moment for pressing the door leaf against the door seal, while with an opening angle of the door leaf of approximately 2 °, a strongly decreasing opening moment is achieved, which extends over the further door opening path about 180 ° door opening angle remains almost constant or can even decrease or increase again.
  • Such an ideal torque curve can be achieved by appropriate shaping of the lifting curve, in that the increase in the curved path associated with the spring support member per angle of rotation is the one that is ideally specified on the door Is adaptable to requirements. Since the cam track associated with the damping piston can be designed in a desired manner deviating from the cam track associated with the spring support member, the damping function in the individual rotation angle ranges of the closer shaft is independent of the closing forces occurring in the same areas.
  • the power transmission roller of the damping piston is at least slightly offset from the longitudinal center in the spring support member.
  • the closing force can be adapted to the requirements within certain limits, which can be achieved in particular according to a further embodiment of the invention in that the spring arrangement acting on the spring support member is supported on an adjustable abutment.
  • Fig. 1 the upper region of a door is shown, the door leaf 10 of which is attached to a wall-fixed frame 11.
  • the upper door closer 12 according to the invention is fastened, the actuating arm 14 of which, connected to the closer shaft 13 in a rotationally fixed manner, grips with its free end via a slide piece, not shown, into a guide rail 15 fastened to the frame 11 above the door leaf 10.
  • a roller engaging in the guide rail 15 can also be rotatably mounted on the free end of the actuating arm 14.
  • the structure of the upper door closer which can be seen in particular from FIGS. And 3, has a housing 16 to be filled with a pressure medium, such as oil, in which a closer shaft 13 is rotatably mounted, which crosses the housing 16 and has a driver shaft at each end protrudes from the housing, one of the driver shafts 17 being rotatably connected to the actuating arm 14.
  • the closer shaft 13 is rotatably guided at the top by means of a bearing 18 in a bearing ring 19 which can be screwed to the housing 16 and at the bottom by means of a bearing 20 in the housing 16.
  • a sealing ring 21 is arranged on the one hand in the bearing ring 19 and on the other hand in the housing 16.
  • the closer shaft 13 carries a cam cam 22 connected to it in a rotationally fixed manner.
  • the curve is characterized by a zone 23 securing the closed position and adjoining cam tracks 24 and 25, which together form a heart-shaped circumferential contour, due to different slopes of both cam tracks 24 and 25 there is an asymmetrical heart shape.
  • the position of the cam disc 22 shown in FIG. 2 corresponds to the closed position of the upper door closer. In this position, a force transmission roller 26 bears against the zone 23 of the cam disc 22, which is supported via an axle bolt 27 on a piston-like spring support member 28 which is longitudinally displaceable in the door closer housing 16.
  • the spring arrangement 29, 30 is supported at one end, which at the other abuts an adjustable abutment 31.
  • the spring arrangement is formed from a helical compression spring 29 expressing strong spring forces and a softer helical compression spring 30 embedded therein.
  • the abutment 31 is disc-shaped and has a threaded bore in its center, into which the threaded shaft 33 of a setting pin 32 engages, which in turn is axially immovably mounted in a plug 34 screwable into the door closer housing 16.
  • the adjusting pin 32 is sealed in the plug itself against the housing 16 of the upper door closer.
  • the cam track 25 interacts with a roller 35 which is mounted on a damping piston 37 via an axle pin 36.
  • the damping piston 37 arranged on the side of the closer shaft 13 opposite the spring support member 28 engages in the cylindrical housing 16 of the upper door closer 12 and separates the pressure medium chamber accommodating the spring arrangement 29, 30, the spring support member 28 and the closer shaft 13 from the pressure chamber 38 of the upper door closer.
  • the cylinder bore is widened by an annular groove 39, from which a channel formed by the transverse bore 40, the longitudinal bore 41 and the transverse bore 42 branches off and opens into the pressure medium chamber in the area of the closer shaft 13.
  • An adjustable throttle valve 43 is connected into this channel, through which the pressure medium flow passing through the channel can be throttled.
  • the damping piston 37 is pot-shaped and has a cavity filled by an energy accumulator 44, this energy accumulator in the illustrated embodiment consisting of a helical compression spring which is supported on one side on the inside of the end wall of the housing 16 and on the other side on the bottom 45 of the damping piston 37.
  • an energy accumulator 44 in the illustrated embodiment consisting of a helical compression spring which is supported on one side on the inside of the end wall of the housing 16 and on the other side on the bottom 45 of the damping piston 37.
  • a check valve 46 opening towards the pressure chamber 38 is arranged, and on the other hand the bottom of the damping piston 37 has a threaded bore 47 into which a known safety valve 48, which closes under spring pressure and opens from the pressure chamber 38 towards the pressure medium chamber, is screwed.
  • the energy accumulator 44 formed by a helical compression spring is designed in such a way that this energy accumulator is just able to hold the damping piston or the roller 35 mounted on it during the opening movement of the door leaf on the cam track 25 of the cam disc 22.
  • the components of the upper door closer shown in FIGS. 2 and 3 are in a position corresponding to the closed position of the door leaf 10.
  • the closer shaft 13 also begins counterclockwise - that is. H. to turn in the direction of arrow 49.
  • the spring support member 28 must be pressed to the right by a relatively large stroke immediately after a few degrees of angle as a result of the roller 26 being pressed out of the curve zone 23, so that a large increase in force due to the force of the spring arrangement 29, 30 can be dealt with immediately during a relatively small angle of rotation is.
  • the damping piston 37 follows the cam cam rotating in the counterclockwise direction 22 and moves in the cylinder of the housing 16 due to the action of the energy accumulator 44 to the right.
  • the check valve 46 opens so that pressure medium can flow into the pressure chamber 38 via the open check valve 46 from the pressure medium chamber having the lifting cam 22, the spring support member 28 and the spring arrangement 29, 30. If, after an opening angle of the door leaf 10 allowing access to the door, the latter is released, the spring arrangement 29, 30 presses the spring support member 28 with its roller 26 to the left, as a result of which, via the cam track 24, the cam cam 22 connected to the closer shaft 13 in a rotationally fixed manner Is turned clockwise so that the door leaf 10 runs back into its closed position.

Abstract

A door check wherein a housing is affixed to the pivotable panel and a guide rail is affixed to the frame of a door. The housing contains a shaft which is rigidly connected with one end of an arm the other end of which is slidably guided by the rail. The shaft carries a disc cam having two asymmetric sections one of which is tracked by a spring-biased follower surrounding an antifriction bearing and tending to return the panel to its closed position and the other of which is tracked by a roller on the piston of a damper which yieldably opposes the movement of the panel back to its closed position. The configuration of the two cam sections is selected with a view to allow for a reduction of the resistance which the follower offers to opening of the door shortly after the panel leaves its closed position as well as to ensure that the damper can operate independently of the follower and vice versa. The damper has a spring which urges the roller against the cam and whose bias is not more than 50 percent of the bias of one or more springs which urge the follower against the cam.

Description

Die Erfindung betrifft einen Obertürschließer mit einer von einer Federanordnung im Schließsinn betätigbaren Schließerwelle und mit einem mit dieser wirkverbundenen Dämpfungskolben sowie mit einem mit der Schließerwelle einerends gekuppelten, schwenkbaren Betätigungsarm, der über ein andernends angeordnetes Gleitstück in eine Führungsschiene faßt, wobei die Schließerwelle eine Hubkurvenscheibe aufweist, deren der Öffnungsrichtung zugehörige Kurvenbahn von einem Federstützglied über wenigstens eine Rolle und deren der Schließrichtung zugehörige Kurvenbahn von einem Dämpfungskolben über eine weitere Rolle beaufschlagt ist.The invention relates to an upper door closer with a closer shaft that can be actuated by a spring arrangement and with a damping piston that is operatively connected to it and with a pivotable actuating arm that is coupled to the closer shaft at one end and that fits into a guide rail via another slide piece, the closer shaft having a cam disc , whose curve path associated with the opening direction is acted upon by a spring support member via at least one roller and whose curve path associated with the closing direction is acted upon by a damping piston via a further roller.

Ein aus der NL-A 6 702 391 bekannter Obertürschließer kann am Türflügel befestigt sein, wobei die Schließerwelle des Obertürschließers mit einem Betätigungsarm drehfest verbunden ist, dessen freies Ende in eine an der Türzarge angeordnete Führungsschiene faßt. Es ist jedoch auch die umgekehrte Montage möglich, wobei das Türschließergehäuse an der Zarge und die Führungsschiene für den Betätigungsarm am Türflügel angeordnet ist. Derartige, bekannte Obertürschließer werden immer dort eingesetzt, wo aus praktischen, insbesondere aber aus optischen Gründen das normalerweise eingesetzte, von der Tür abgespreizte Scherengestänge eines Obertürschließers nicht gewünscht wird. Derartige bekannte Obertürschließer mit der sogenannten Gleitschienenmontage haben zwar den Vorteil, daß sie sich optisch gut in das allgemeine Bild der Tür einfügen, sind jedoch von ihrer Betätigung her mit einem entscheidenden Nachteil behaftet. Dieser Nachteil besteht insbesondere darin, daß die Schließkräfte infolge der Kraftkomponentenaufteilung in der Führungsschiene bis zu 60% niedriger liegen können, als bei Türschließern mit einem Scherengestänge. Aus den gleichen Gründen steigen die am Türblatt erforderlichen Öffnungskräfte ausgehend von der Schließlage des Türflügels bis etwa 60° Türöffnungswinkel stetig an, um erst danach aufgrund der Hebelstellung wieder abzufallen. Bei Obertürschließern mit einem Scherengestänge fällt hingegen die größte Öffnungskraft im Moment des Aufdrückens des Türflügels an, um bereits nach wenigen Öffnungsgraden stetig abzufallen und bei etwa 50° Türöffnungswinkel einen in etwa konstanten, im Vergleich zur Anfangskraft geringen Wert anzunehmen. Die Verhältnisse bei Türschließern mit der sogenannten Gleitschienenmontage beeinträchtigen somit den Begehungskomfort einer Tür erheblich und verunsichern eine Bedienungsperson insofern, als daß diese gewohnt ist, einen Türflügel anfangs mit großer Öffnungskraft aufzudrücken, die mit zunehmendem Öffnungswinkel des Türflügels abnimmt. Diese gravierenden Nachteile von Türschließern mit der sogenannten Gleitschienenmontage sind der Grund dafür, daß diese optisch zu bevorzugende Lösung bisher nur in wenigen Fällen, insbesondere an solchen Türen eingesetzt wurden, die keiner großen Schließkraft bedürfen.An upper door closer known from NL-A 6 702 391 can be fastened to the door leaf, the closer shaft of the upper door closer being rotatably connected to an actuating arm, the free end of which engages in a guide rail arranged on the door frame. However, the reverse assembly is also possible, the door closer housing being arranged on the frame and the guide rail for the actuating arm being arranged on the door leaf. Known upper door closers of this type are always used where, for practical, but especially for optical reasons, the normally used scissor linkage of an upper door closer that is spread apart from the door is not desired. Such known upper door closers with the so-called slide rail assembly have the advantage that they fit optically well into the general picture of the door, but they have a decisive disadvantage in their operation. This disadvantage is in particular that the closing forces can be up to 60% lower as a result of the distribution of force components in the guide rail than in door closers with a scissor linkage. For the same reasons, the opening forces required on the door leaf increase steadily from the closed position of the door leaf to approximately 60 ° door opening angle, only to drop again afterwards due to the lever position. In the case of top door closers with scissors linkage, on the other hand, the greatest opening force occurs at the moment the door leaf is pressed open, in order to drop steadily after just a few degrees of opening and to assume an approximately constant value compared to the initial force at a door opening angle of around 50 °. The conditions for door closers with the so-called slide rail assembly thus significantly impair the ease of access of a door and unsettle an operator insofar as they are used to initially pushing open a door leaf with a large opening force, which decreases as the opening angle of the door leaf increases. These serious disadvantages of door closers with the so-called slide rail assembly are the reason why this optically preferred solution has so far only been used in a few cases, in particular on doors which do not require a large closing force.

Aus der CH-A 473 970 ist ein Türschließer bekannt, dessen Schließerwelle eine Hubkurvenscheibe umfaßt, deren eine Kurvenbahn von einem Federstützglied über Rollen beaufschlagt ist, während die andere Kurvenbahn von einem Dämpfungskolben beaufschlagt ist. Die Kurvenbahnen sind allerdings symmetrisch ausgebildet, wodurch dieser bekannte Türschließer geeignet ist, bei Türen eingesetzt zu werden, die sowohl nach rechts als auch nach links schwenkbar sind. Damit ist keine der Kurvenbahnen dem Federstützglied bzw. dem Dämpfungskolben zugeordnet, so daß man die Kurvenbahnen entweder in Bezug auf das Öffnungsverhalten oder aber auf das Dämpfungsverhalten des Türflügels auslegen kann. Eine Optimierung beider Verhaltensweisen ist mit dem bekannten Türschließer nicht möglich, obwohl das Federstützglied und der Dämpfungskolben während des gleichen Drehwinkels der Schließerwelle unterschiedliche Hübe zurücklegen.A door closer is known from CH-A 473 970, the closer shaft of which comprises a cam disc, one cam track of which is acted upon by a spring support member via rollers, while the other cam track is acted upon by a damping piston. However, the cam tracks are symmetrical, which makes this known door closer suitable for use with doors that can be pivoted both to the right and to the left. This means that none of the cam tracks is assigned to the spring support member or the damping piston, so that the cam tracks can be designed either with respect to the opening behavior or the damping behavior of the door leaf. An optimization of both behaviors is not possible with the known door closer, although the spring support member and the damping piston cover different strokes during the same angle of rotation of the closer shaft.

Die Aufgabe der Erfindung besteht darin, einen Obertürschließer der eingangs genannten Art zu schaffen, mit dem sich eine Schließkraft- und Öffnungskraftcharakteristik wie bei einem Türschließer mit Scherengestänge erzielen läßt und die Dämpfung des Türflügels unabhängig von den in gleichen Drehwinkelbereichen der Schließerwelle anfallenden Schließ-Kräften gestaltet werden kann.The object of the invention is to provide an upper door closer of the type mentioned, with which a closing force and opening force characteristic can be achieved as with a door closer with scissor linkage and the damping of the door leaf is designed independently of the closing forces occurring in the same rotation angle ranges of the closer shaft can be.

Diese Aufgabe ist mit den im Kennzeichen des Hauptanspruches genannten Merkmalen gelöst. Dadurch lassen sich infolge der unterschiedlichen Gestaltung der Kurvenbahnen dem Federstützglied und auch dem Dämpfungskolben je nach Türöffnungswinkel bzw. Drehwinkel vorbestimmte, an die Öffnungs- und Schließcharakteristik angepaßte Hübe zuteilen. Die dem Federstützglied zugeordnete Kurvenbahn erlaubt bei einem dem Drehwinkel der Schließerwelle proportionalen Hub bei gleichzeitig verändertem Anstellwinkel der Kraftübertragungsrolle zur Hubkurvenachse dem Federstützglied einen je nach Drehwinkel größeren oder kleineren Hub bei größerem oder kleinerem Kraftübertragungshebel zuzuordnen. Mit einer derart dosierten Hub- und Anstellwinkelkombination läßt sich dementsprechend die an sich linear verlaufende Kennlinie der Schließfeder im Verhältnis zur Verdrehung der Schließerwelle und damit zum Türöffnungswinkel nahezu beliebig formen. Der Schließkraftverlauf am Türflügel läßt sich derart idealisieren, daß in dessen Schließlage ein relativ hohes Schließmoment zum Andruck des Türflügels an die Türdichtung vorhanden ist, während bei einem Öffnungswinkel des Türflügels von etwa 2° ein stark abfallendes Öffnungsmoment erzielt wird, das über den weiteren Türöffnungsweg bis etwa 180° Türöffnungswinkel nahezu konstant bleibt oder sogar wahlweise weiter abfallend oder auch wieder ansteigend verlaufen kann. Ein solch idealer Momentenverlauf läßt sich über eine entsprechende Formgebung der Hubkurve erreichen, indem der Anstieg der dem Federstützglied zugehörigen Kurvenbahn je Drehwinkel den an der Tür als ideal vorgegebenen Erfordernissen anpaßbar ist. Da die dem Dämpfungskolben zugehörige Kurvenbahn in gewünschter Weise von der dem Federstützglied zugehörigen Kurvenbahn abweichend gestaltet werden kann, ist die Dämpfungsfunktion in den einzelnen Drehwinkelbereichen der Schließerwelle unabhängig von den in den gleichen Bereichen anfallenden Schließkräften.This object is achieved with the features mentioned in the characterizing part of the main claim. As a result, due to the different design of the cam tracks, the spring support member and also the damping piston, depending on the door opening angle or angle of rotation, can be assigned predetermined strokes adapted to the opening and closing characteristics. The cam track assigned to the spring support member permits a stroke that is proportional to the angle of rotation of the closer shaft and at the same time changes the angle of attack of the power transmission roller relative to the stroke curve axis, to assign the spring support member a larger or smaller stroke depending on the angle of rotation with a larger or smaller power transmission lever. With such a metered stroke and angle combination, the linear characteristic of the closing spring can be shaped almost arbitrarily in relation to the rotation of the closer shaft and thus to the door opening angle. The closing force curve on the door leaf can be idealized in such a way that in its closed position there is a relatively high closing moment for pressing the door leaf against the door seal, while with an opening angle of the door leaf of approximately 2 °, a strongly decreasing opening moment is achieved, which extends over the further door opening path about 180 ° door opening angle remains almost constant or can even decrease or increase again. Such an ideal torque curve can be achieved by appropriate shaping of the lifting curve, in that the increase in the curved path associated with the spring support member per angle of rotation is the one that is ideally specified on the door Is adaptable to requirements. Since the cam track associated with the damping piston can be designed in a desired manner deviating from the cam track associated with the spring support member, the damping function in the individual rotation angle ranges of the closer shaft is independent of the closing forces occurring in the same areas.

Zur exakten Zuordnung des Dämpfungskolbens zu der zugehörigen Kurvenbahn der Hubkurvenscheibe ist es vorteilhaft, die Kraftübertragungsrolle des Dämpfungskolbens außermittig anzuordnen. Außerdem läßt sich die Betätigung des Türschließers erleichtern, wenn - wie nach einem weiteren Merkmal der Erfindung vorgeschlagen - auch die Kraftübertragungsrolle wenigstens etwas aus der Längsmitte versetzt im Federstützglied angeordnet ist.For exact assignment of the damping piston to the associated cam track of the cam disc, it is advantageous to arrange the power transmission roller of the damping piston off-center. In addition, the actuation of the door closer can be facilitated if - as proposed according to a further feature of the invention - the power transmission roller is at least slightly offset from the longitudinal center in the spring support member.

Es mag außerdem vorteilhaft sein, wenn die Schließkraft in gewissen Grenzen den Erfordernissen angepaßt werden kann, was sich nach einem weiteren Ausgestaltungsmerkmal der Erfindung insbesondere dadurch erzielen läßt, daß die auf das Federstützglied einwirkende Federanordnung an einem einstellbaren Widerlager abgesützt ist.It may also be advantageous if the closing force can be adapted to the requirements within certain limits, which can be achieved in particular according to a further embodiment of the invention in that the spring arrangement acting on the spring support member is supported on an adjustable abutment.

Die Erfindung ist in einem Ausführungsbeispiel auf der Zeichnung dargestellt, und wird nachfolgend näher erläutert. Es zeigen:

  • Fig. 1 den oberen Bereich einer Tür in perspektivischer Ansicht, an deren Türflügel der erfindungsgemäße Obertürschließer befestigt ist, der mit dem freien Ende seines Betätigungsarmes in eine an der Türzarge angeordnete Führungsschiene faßt,
  • Fig. 2 der aus Fig. 1 ersichtliche Türschließer in einem Vertikalschnitt nach der Linie 11-11 von Fig. 1,
  • Fig. 3 der aus Fig. 2 ersichtliche Türschließer in einem Horizontalschnitt nach der Linie 111-111 von Fig. 2.
The invention is shown in an embodiment on the drawing, and is explained in more detail below. Show it:
  • 1 is a perspective view of the upper area of a door, to the door wing of which the upper door closer according to the invention is fastened, which, with the free end of its actuating arm, engages in a guide rail arranged on the door frame,
  • 2 shows the door closer shown in FIG. 1 in a vertical section along the line 11-11 of FIG. 1,
  • 3 shows the door closer shown in FIG. 2 in a horizontal section along the line 111-111 from FIG. 2.

In Fig. 1 ist der obere Bereich einer Tür dargestellt, deren Türflügel 10 an einer wandfesten Zarge 11 angeschlagen ist. Im oberen Bereich des Türflügels 10 ist der erfindungsgemäße Obertürschließer 12 befestigt, dessen mit der Schließerwelle 13 drehfest verbundener Betätigungsarm 14 mit seinem freien Ende über ein nicht dargestelltes Gleitstück in eine an der Zarge 11 oberhalb des Türflügels 10 befestigte Führungsschiene 15 faßt. Statt eines Gleitstücks kann am freien Ende des Betätigungsarmes 14 auch eine in die Führungsschiene 15 eingreifende Rolle drehgelagert sein.In Fig. 1 the upper region of a door is shown, the door leaf 10 of which is attached to a wall-fixed frame 11. In the upper region of the door leaf 10, the upper door closer 12 according to the invention is fastened, the actuating arm 14 of which, connected to the closer shaft 13 in a rotationally fixed manner, grips with its free end via a slide piece, not shown, into a guide rail 15 fastened to the frame 11 above the door leaf 10. Instead of a slider, a roller engaging in the guide rail 15 can also be rotatably mounted on the free end of the actuating arm 14.

Der insbesondere aus den Fig. und 3 in seinem Aufbau ersichtliche Obertürschließer weist ein mit einem Druckmittel, wie beispielsweise Öl, zu füllendes Gehäuse 16 auf, in welchem eine Schließerwelle 13 drehbar gelagert ist, die das Gehäuse 16 durchquert und an jedem Ende mit einem Mitnehmerschaft aus dem Gehäuse vorragt, wobei einer der Mitnehmerschäfte 17 mit dem Betätigungsarm 14 drehfest verbindbar ist. Die Schließerwelle 13 ist oberendig mittels eines Lagers 18 in einem mit dem Gehäuse 16 verschraubbaren Lagerring 19 und unterendig mittels eines Lagers 20 im Gehäuse 16 drehbar geführt. Auf den Außenseiten beider Lager 18 und 20 ist zum einen im Lagerring 19 und zum anderen im Gehäuse 16 jeweils ein Dichtring 21 angeordnet. Innerhalb des Gehäuses 16 trägt die Schließerwelle 13 eine drehfest mit dieser verbundene Hubkurvenscheibe 22. Der Kurvenverlauf ist durch eine die Schließlage sichernde Zone 23 und sich daran anschließende Kurvenbahnen 24 und 25 gekennzeichnet, die zusammen eine herzförmige Umfangskontur bilden, wobei infolge unterschiedlicher Steigungen beider Kurvenbahnen 24 und 25 sich eine asymmetrische Herzform ergibt. Die in Fig. 2 dargestellte Stellung der Hubkurvenscheibe 22 entspricht der Schließlage des Obertürschließers. In dieser Lage liegt an der Zone 23 der Hubkurvenscheibe 22 eine Kraftübertragungsrolle 26 an, die über einen Achsbolzen 27 an einem kolbenartigen, im Türschließergehäuse 16 längsverschiebbaren Federstützglied 28 gelagert ist. An diesem Federstützglied 28 ist einerends die Federanordnung 29, 30 abgestützt, die andernends an einem einstellbaren Widerlager 31 anliegt. Bei dem aus den Fig. 2 und 3 ersichtlichen Ausführungsbeispiel ist die Federanordnung aus einer starke Federkräfte äußernden Schraubendruckfeder 29 und einer darin eingelagerten, weicheren Schraubendruckfeder 30 gebildet. Das Widerlager 31 ist scheibenartig ausgebildet und weist in seinem Zentrum eine Gewindebohrung auf, in die der Gewindeschaft 33 eines Stellzapfens 32 eingreift, der seinerseits in einem in das Türschließergehäuse 16 einschraubbaren Verschlußstopfen 34 axial unverschiebbar gelagert ist. Dabei ist der Stellzapfen 32 im Verschlußstopfen selbst gegenüber dem Gehäuse 16 des Obertürschließers abgedichtet.The structure of the upper door closer, which can be seen in particular from FIGS. And 3, has a housing 16 to be filled with a pressure medium, such as oil, in which a closer shaft 13 is rotatably mounted, which crosses the housing 16 and has a driver shaft at each end protrudes from the housing, one of the driver shafts 17 being rotatably connected to the actuating arm 14. The closer shaft 13 is rotatably guided at the top by means of a bearing 18 in a bearing ring 19 which can be screwed to the housing 16 and at the bottom by means of a bearing 20 in the housing 16. On the outer sides of both bearings 18 and 20, a sealing ring 21 is arranged on the one hand in the bearing ring 19 and on the other hand in the housing 16. Within the housing 16, the closer shaft 13 carries a cam cam 22 connected to it in a rotationally fixed manner. The curve is characterized by a zone 23 securing the closed position and adjoining cam tracks 24 and 25, which together form a heart-shaped circumferential contour, due to different slopes of both cam tracks 24 and 25 there is an asymmetrical heart shape. The position of the cam disc 22 shown in FIG. 2 corresponds to the closed position of the upper door closer. In this position, a force transmission roller 26 bears against the zone 23 of the cam disc 22, which is supported via an axle bolt 27 on a piston-like spring support member 28 which is longitudinally displaceable in the door closer housing 16. On this spring support member 28, the spring arrangement 29, 30 is supported at one end, which at the other abuts an adjustable abutment 31. In the embodiment shown in FIGS. 2 and 3, the spring arrangement is formed from a helical compression spring 29 expressing strong spring forces and a softer helical compression spring 30 embedded therein. The abutment 31 is disc-shaped and has a threaded bore in its center, into which the threaded shaft 33 of a setting pin 32 engages, which in turn is axially immovably mounted in a plug 34 screwable into the door closer housing 16. Here, the adjusting pin 32 is sealed in the plug itself against the housing 16 of the upper door closer.

Die Kurvenbahn 25 wirkt mit einer Rolle 35 zusammen, die über einen Achsbolzen 36 an einem Dämpfungskolben 37 gelagert ist. Der auf der dem Federstützglied 28 gegenüberliegenden Seite der Schließerwelle 13 angeordnete Dämpfungskolben 37 greift schließend in das zylinderförmige Gehäuse 16 des Obertürschließers 12 ein und trennt den die Federanordnung 29, 30, das Federstützglied 28 und die Schließerwelle 13 aufnehmenden Druckmittelraum von dem Druckraum 38 des Obertürschließers. Am Ende dieses Druckraumes ist die Zylinderbohrung durch eine Ringnut 39 erweitert, von der ein durch die Querbohrung 40, die Längsbohrung 41 und die Querbohrung 42 gebildeter Kanal abzweigt, der in den Druckmittelraum im Bereich der Schließerwelle 13 einmündet. In diesen Kanal ist ein einstellbares Drosselventil 43 geschaltet, durch welches der den Kanal passierende Druckmittelstrom gedrosselt werden kann. Der Dämpfungskolben 37 ist topfförmig ausgebildet und weist einen von einem Kraftspeicher 44 ausgefüllten Hohlraum auf, wobei dieser Kraftspeicher bei dem dargestellten Ausführungsbeispiel aus einer Schraubendruckfeder besteht, die sich einerends an der Innenseite der Stirnwand des Gehäuses 16 und andernends am Boden 45 des Dämpfungskolbens 37 abstützt. Im Boden 45 des Dämpfungskolbens ist einerseits ein zum Druckraum 38 hin öffnendes Rückschlagventil 46 angeordnet, und andererseits weist der Boden des Dämpfungskolbens 37 eine Gewindebohrung 47 auf, in welche ein bekanntes, unter Federdruck schließendes, vom Druckraum 38 zum Druckmittelraum hin öffnendes Sicherheitsventil 48 eingeschraubt ist. Der durch eine Schraubendruckfeder gebildete Kraftspeicher 44 ist derart ausgelegt, daß dieser Kraftspeicher gerade in der Lage ist, den Dämpfungskolben bzw. die an diesem gelagerte Rolle 35 während der Öffnungsbewegung des Türflügels an der Kurvenbahn 25 der Hubkurvenscheibe 22 in Anlage zu halten.The cam track 25 interacts with a roller 35 which is mounted on a damping piston 37 via an axle pin 36. The damping piston 37 arranged on the side of the closer shaft 13 opposite the spring support member 28 engages in the cylindrical housing 16 of the upper door closer 12 and separates the pressure medium chamber accommodating the spring arrangement 29, 30, the spring support member 28 and the closer shaft 13 from the pressure chamber 38 of the upper door closer. At the end of this pressure chamber, the cylinder bore is widened by an annular groove 39, from which a channel formed by the transverse bore 40, the longitudinal bore 41 and the transverse bore 42 branches off and opens into the pressure medium chamber in the area of the closer shaft 13. An adjustable throttle valve 43 is connected into this channel, through which the pressure medium flow passing through the channel can be throttled. The damping piston 37 is pot-shaped and has a cavity filled by an energy accumulator 44, this energy accumulator in the illustrated embodiment consisting of a helical compression spring which is supported on one side on the inside of the end wall of the housing 16 and on the other side on the bottom 45 of the damping piston 37. In the floor 45 of the damping piston, on the one hand a check valve 46 opening towards the pressure chamber 38 is arranged, and on the other hand the bottom of the damping piston 37 has a threaded bore 47 into which a known safety valve 48, which closes under spring pressure and opens from the pressure chamber 38 towards the pressure medium chamber, is screwed. The energy accumulator 44 formed by a helical compression spring is designed in such a way that this energy accumulator is just able to hold the damping piston or the roller 35 mounted on it during the opening movement of the door leaf on the cam track 25 of the cam disc 22.

Wie insbesondere aus Fig. entnommen werden kann, befinden sich die Bauteile des in Fig. 2 und 3 dargestellten Obertürschließers in einer der Schließstellung des Türflügels 10 entsprechenden Lage. Sobald nun mit der Verschwenkung des Türflügels im Öffnungssinne begonnen wird, beginnt auch die Schließerwelle 13 entgegen dem Uhrzeigersinn - d. h. in Richtung des Pfeiles 49 - zu drehen. Dabei ist sofort nach wenigen Winkelgraden infolge des Ausdrückens der Rolle 26 aus der Kurvenzone 23 das Federstützglied 28 um einen relativ großen Hub nach rechts zu drücken, so daß während eines relativ kleinen Drehwinkels sofort ein großer Kraftanstieg infolge der Kraftwirkung der Federanordnung 29, 30 zu bewältigen ist. Wenn nun die Kurvenbahn 24 sich so weit gegenüber der Rolle 26 verdreht hat, daß die Rolle auf durchschnittlich ansteigenden Bereichen der Kurvenbahn 24 anliegt, sind größere Drehwinkelbereiche bei kleinerem Anstellwinkel zu durchfahren, um dem Federstützglied 28 und der dieses beaufschlagenden Federanordnung 29 und 30 den gleichen Hub wie bei Beginn der Öffnungsbewegung zu erteilen. Daher äußert sich die Rückstellkraft der Federanordnung 29, 30 als für den Türbenutzer wahrnehmbarer Kraftabfall. Diese Verhältnisse lassen sich durch die Ausbildung der Kurvenbahn 24 in bezug auf ihre Steigung den Bedürfnissen zum Zwecke einer komfortablen Türbedienung anpassen. Während nun durch die Kurvenbahn 24, über die Kraftübertragungsrolle 26 und das Federstützglied 28 die Federanordnung 29, 30 gespannt wird, erfolgt auch gleichzeitig ein Abrollen der Rolle 35 an der Kurvenbahn 25 der Hubkurvenscheibe 22. Dabei folgt der Dämpfungskolben 37 der sich im Gegenzeigersinn drehenden Hubkurvenscheibe 22 und verschiebt sich im Zylinder des Gehäuses 16 infolge der Wirkung des Kraftspeichers 44 nach rechts. Dabei öffnet das Rückschlagventil 46, so daß Druckmittel aus dem die Hubkurvenscheibe 22, das Federstützglied 28 und die Federanordnung 29, 30 aufweisenden Druckmittelraum über das offene Rückschlagventil 46 in den Druckraum 38 einströmen kann. Wenn nun nach einem die Begehung der Tür erlaubenden Öffnungswinkel des Türflügels 10 dieser losgelassen wird, so drückt die Federanordnung 29, 30 das Federstützglied 28 mit seiner Rolle 26 nach links, wodurch über die Kurvenbahn 24 auch die mit der Schließerwelle 13 drehfest verbundene Hubkurvenscheibe 22 im Uhrzeigersinn gedreht wird, so daß der Türflügel 10 in seine Schließlage zurückläuft. Gleichzeitig erfolgt jedoch über die Kurvenbahn 25 eine Verschiebung des Dämpfungskolbens 37 gegen die Wirkung des Kraftspeichers 44 nach links, wodurch das im Druckraum 38 befindliche Druckmittel über den Rückflußkanal 40, 41, 42 in den Druckmittelraum zurückgedrückt wird. Dabei wird infolge des Drosselventiles 43 der Rückfluß gedrosselt, so daß eine Dämpfung der Türschließbewegung erfolgt.As can be seen in particular from FIG. 1, the components of the upper door closer shown in FIGS. 2 and 3 are in a position corresponding to the closed position of the door leaf 10. As soon as the pivoting of the door leaf in the opening direction is started, the closer shaft 13 also begins counterclockwise - that is. H. to turn in the direction of arrow 49. The spring support member 28 must be pressed to the right by a relatively large stroke immediately after a few degrees of angle as a result of the roller 26 being pressed out of the curve zone 23, so that a large increase in force due to the force of the spring arrangement 29, 30 can be dealt with immediately during a relatively small angle of rotation is. If the cam track 24 has rotated so far with respect to the roller 26 that the roller rests on average rising areas of the cam track 24, larger ranges of rotation angles with a smaller angle of attack must be traversed in order to make the spring support member 28 and the spring arrangement 29 and 30 act on the same To give the stroke as at the start of the opening movement. Therefore, the restoring force of the spring arrangement 29, 30 manifests itself as a drop in force which is perceptible to the door user. These conditions can be adapted to the needs for the purpose of convenient door operation by the configuration of the cam track 24 with respect to its slope. While the spring arrangement 29, 30 is now tensioned by the cam track 24, via the power transmission roller 26 and the spring support member 28, the roller 35 also simultaneously rolls on the cam track 25 of the cam cam 22. The damping piston 37 follows the cam cam rotating in the counterclockwise direction 22 and moves in the cylinder of the housing 16 due to the action of the energy accumulator 44 to the right. The check valve 46 opens so that pressure medium can flow into the pressure chamber 38 via the open check valve 46 from the pressure medium chamber having the lifting cam 22, the spring support member 28 and the spring arrangement 29, 30. If, after an opening angle of the door leaf 10 allowing access to the door, the latter is released, the spring arrangement 29, 30 presses the spring support member 28 with its roller 26 to the left, as a result of which, via the cam track 24, the cam cam 22 connected to the closer shaft 13 in a rotationally fixed manner Is turned clockwise so that the door leaf 10 runs back into its closed position. At the same time, however, the damping piston 37 is displaced to the left against the action of the energy accumulator 44 via the cam track 25, as a result of which the pressure medium in the pressure chamber 38 is pressed back into the pressure medium chamber via the return flow channel 40, 41, 42. As a result of the throttle valve 43, the return flow is throttled so that the door closing movement is damped.

BezugszeichenlisteReference symbol list

  • 10 Türflügel10 door leaves
  • 11 Zarge11 frame
  • 12 Obertürschließer12 upper door closers
  • 13 Schließerwelle13 closer shaft
  • 14 Betätigungsarm14 operating arm
  • 15 Führungsschiene15 guide rail
  • 16 Gehäuse16 housing
  • 17 Mitnehmerschaft17 entourage
  • 18 Lager18 bearings
  • 19 Lagerring19 bearing ring
  • 20 Lager20 bearings
  • 21 Dichtring21 sealing ring
  • 22 Hubkurvenscheibe22 cam disc
  • 23 Zone23 zone
  • 24 Kurvenbahn24 curved track
  • 25 Kurvenbahn25 curved track
  • 26 Kraftübertragungsrolle26 power transmission roller
  • 27 Achsbolzen27 axle bolts
  • 28 Federstützglied28 spring support member
  • 29 Druckfeder29 compression spring
  • 30 Druckfeder30 compression spring
  • 31 Widerlager31 abutments
  • 32 Stellzapfen32 adjusting pins
  • 33 Gewindeschaft33 threaded shaft
  • 34 Verschlußstopfen34 sealing plug
  • 35 Rolle35 roll
  • 36 Achsbolzen36 axle bolts
  • 37 Dämpfungskolben37 damping pistons
  • 38 Druckraum38 pressure chamber
  • 39 Ringnut39 ring groove
  • 40 Querbohrung40 cross hole
  • 41 Längsbohrung41 longitudinal bore
  • 42 Querbohrung42 cross hole
  • 43 Drosselventil43 throttle valve
  • 44 Kraftspeicher44 lift mechanism
  • 45 Boden, von 3745 floor, from 37
  • 46 Rückschlagventil46 check valve
  • 47 Gewindebohrung47 threaded hole
  • 48 Sicherheitsventil48 safety valve
  • 49 Pfeil49 arrow

Claims (4)

1. A top door closer comprising a closer shaft (13) which can be actuated in the closing direction by a spring arrangement (29, 30) and a damping piston (37) which is operatively connected to the closer shaft (13), and also a pivotable actuating arm (14) which is coupled at one end to the closer shaft and which engages into a guide rail (15) by way of a slide portion arranged at the other end, wherein the closer shaft has a stroke-producing cam disc (22) in which the cam track (24) associated with the direction of opening movement is acted upon by a spring support member (28) by way of at least one roller (26) and the cam track (25) which is associated with the direction of closing movement is acted upon by a damping piston (37) by way of a further roller (35), characterised in that the stroke-producing cam disc (22) is of an asymmetrical configuration and the cam track (24) associated with the spring support member (28) has a different cam slope from the cam track (25) associated with the damping piston (37).
2. A top door closer according to claim 1 characterised in that the force-transmitting roller (35) of the damping piston (37) is arranged eccentrically.
3. A top door closer according to claim 1 and/or claim 2 characterised in that the spring arrangement (29, 30) which acts on the spring support member (28) is supported against an adjustable support member (31).
4. A top door closer according to one or more of the preceding claims characterised in that the force-transmitting roller (26) is arranged in the spring support member (28) displaced at least somewhat out of the longitudinal centre thereof.
EP84110790A 1983-12-13 1984-09-11 Door closer Expired EP0146693B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110790T ATE43396T1 (en) 1983-12-13 1984-09-11 TOP DOOR CLOSER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3345004 1983-12-13
DE19833345004 DE3345004A1 (en) 1983-12-13 1983-12-13 OVERCLOSE

Publications (3)

Publication Number Publication Date
EP0146693A2 EP0146693A2 (en) 1985-07-03
EP0146693A3 EP0146693A3 (en) 1986-05-28
EP0146693B1 true EP0146693B1 (en) 1989-05-24

Family

ID=6216793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110790A Expired EP0146693B1 (en) 1983-12-13 1984-09-11 Door closer

Country Status (6)

Country Link
US (2) US4658468A (en)
EP (1) EP0146693B1 (en)
JP (1) JPS60144482A (en)
AT (1) ATE43396T1 (en)
AU (1) AU581418B2 (en)
DE (2) DE3345004A1 (en)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345004A1 (en) * 1983-12-13 1985-06-13 Dorma-Baubeschlag Gmbh & Co Kg, 5828 Ennepetal OVERCLOSE
FR2594474B1 (en) * 1986-02-18 1991-11-08 Mustad Fils Sa O HYDRAULIC DOOR CLOSER
JPS62177880U (en) * 1986-04-30 1987-11-11
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AU3570084A (en) 1985-06-20
US4785493A (en) 1988-11-22
JPH0520547B2 (en) 1993-03-19
JPS60144482A (en) 1985-07-30
AU581418B2 (en) 1989-02-23
EP0146693A3 (en) 1986-05-28
DE3345004A1 (en) 1985-06-13
US4658468A (en) 1987-04-21
EP0146693A2 (en) 1985-07-03
ATE43396T1 (en) 1989-06-15
DE3478325D1 (en) 1989-06-29

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