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
door
closer
cam
damping piston
spring support
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
Priority to DE19833345004 priority Critical patent/DE3345004A1/en
Priority to DE3345004 priority
Application filed by Dorma Baubeschlag GmbH and Co KG filed Critical Dorma Baubeschlag GmbH and Co KG
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

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers 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
    • E05F3/104Closers 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F2003/228Arrangements where the end of the closer arm is sliding in a track
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/227Additional 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/10Covers; Housings
    • E05Y2201/11Covers
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/47Springs; Spring tensioners
    • E05Y2201/492Spring tensioners, tension sensors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/638Cams; Ramps
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/688Rollers
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2600/00Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40Mounting location; Visibility of the elements
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2800/00Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/15Applicability
    • E05Y2800/17Universally applicable
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2800/00Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20Combinations of elements
    • E05Y2800/22Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132Doors
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/10Spring actuated checks and closers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/17Checks and closers, holding means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/27Checks and closers
    • Y10T16/276Liquid
    • Y10T16/2766Concentric spring chamber
    • Y10T16/2769Cam
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/27Checks and closers
    • Y10T16/276Liquid
    • Y10T16/2777Multiple piston
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/27Checks and closers
    • Y10T16/276Liquid
    • Y10T16/2788Oscillating piston
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/56Closers
    • Y10T16/593Spring
    • Y10T16/599Spring torsional
    • Y10T16/5995Coil
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/61Closure checks

Description

  • 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. 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • Reference symbol list
    • 10 door leaves
    • 11 frame
    • 12 upper door closers
    • 13 closer shaft
    • 14 operating arm
    • 15 guide rail
    • 16 housing
    • 17 entourage
    • 18 bearings
    • 19 bearing ring
    • 20 bearings
    • 21 sealing ring
    • 22 cam disc
    • 23 zone
    • 24 curved track
    • 25 curved track
    • 26 power transmission roller
    • 27 axle bolts
    • 28 spring support member
    • 29 compression spring
    • 30 compression spring
    • 31 abutments
    • 32 adjusting pins
    • 33 threaded shaft
    • 34 sealing plug
    • 35 roll
    • 36 axle bolts
    • 37 damping pistons
    • 38 pressure chamber
    • 39 ring groove
    • 40 cross hole
    • 41 longitudinal bore
    • 42 cross hole
    • 43 throttle valve
    • 44 lift mechanism
    • 45 floor, from 37
    • 46 check valve
    • 47 threaded hole
    • 48 safety valve
    • 49 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 (2)

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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT84110790T AT43396T (en) 1983-12-13 1984-09-11 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) JPH0520547B2 (en)
AT (1) AT43396T (en)
AU (1) AU581418B2 (en)
DE (2) DE3345004A1 (en)

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Also Published As

Publication number Publication date
US4785493A (en) 1988-11-22
AT43396T (en) 1989-06-15
US4658468A (en) 1987-04-21
DE3478325D1 (en) 1989-06-29
EP0146693A3 (en) 1986-05-28
JPH0520547B2 (en) 1993-03-19
AU3570084A (en) 1985-06-20
JPS60144482A (en) 1985-07-30
DE3345004A1 (en) 1985-06-13
EP0146693A2 (en) 1985-07-03
AU581418B2 (en) 1989-02-23

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