EP2924216B1 - Door closer - Google Patents

Door closer Download PDF

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Publication number
EP2924216B1
EP2924216B1 EP14161299.4A EP14161299A EP2924216B1 EP 2924216 B1 EP2924216 B1 EP 2924216B1 EP 14161299 A EP14161299 A EP 14161299A EP 2924216 B1 EP2924216 B1 EP 2924216B1
Authority
EP
European Patent Office
Prior art keywords
side end
closer
housing
end position
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.)
Revoked
Application number
EP14161299.4A
Other languages
German (de)
French (fr)
Other versions
EP2924216A1 (en
Inventor
Lothar Singer
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.)
Gretsch Unitas GmbH Baubeschlaege
Original Assignee
Gretsch Unitas GmbH Baubeschlaege
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
Family has litigation
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Application filed by Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Priority to EP14161299.4A priority Critical patent/EP2924216B1/en
Publication of EP2924216A1 publication Critical patent/EP2924216A1/en
Application granted granted Critical
Publication of EP2924216B1 publication Critical patent/EP2924216B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E05F3/102—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 rack-and-pinion 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
    • E05F3/04—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
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/499—Spring tensioners; Tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10—Adjustable
    • E05Y2600/20—Adjustable with specific transmission movement

Definitions

  • Door closers of the above type are made DE 92 03 870 U1 and from US 2003/0093872 A1 known.
  • a closer shaft is rotatably mounted on a door closer housing about a shaft axis and passes through a cylindrical interior of the door closer housing.
  • a closing piston is arranged in the interior of the door closer housing on one side of the closer shaft and movably guided along a housing axis, which is formed by the cylinder axis of the cylindrical interior of the door closer housing.
  • a helical spring is arranged in the cylindrical interior of the door closer housing, which is supported on the one hand on the closing piston and on the other hand on a front-side housing cover of the door closer housing.
  • rotational movements of the closer shaft are converted to the shaft axis in linear movements of the closing piston along the housing axis or linear movements of the closing piston along the housing axis in rotational movements of the closer shaft about the shaft axis. If the door leaf provided with the door closer is turned open, the closer shaft is rotated about the shaft axis. Due to the rotational movement, the closer shaft drives the closing piston under bias of the coil spring arranged between the closing piston and the front-side housing cover with a movement along the housing axis of the door closer housing.
  • the previously preloaded coil spring lengthens and thereby drives the closing piston with a movement directed against the closer shaft along the housing axis of the door closer housing.
  • the closer shaft is rotated about the shaft axis and the rotational movement of the closer shaft causes via the linkage an automatic closing movement of the door leaf.
  • the bias of the coil spring and thus the force exerted to automatically close the open door leaf closing force and to be overcome when opening the door panel counterforce is adjustable.
  • the coil spring is not supported on the side remote from the closing piston side directly on the front-side housing cover of the door closer housing but rather on a spring abutment which rests on an adjusting spindle.
  • the adjusting spindle extends with a spindle axis along the housing axis of the door closer housing and is rotatably mounted on the front-side cover of the door closer housing about the spindle axis but in the direction of the spindle axis.
  • An external thread of the adjusting spindle meshes with an internal thread of the spring abutment.
  • the spring abutment In the opposite direction, the spring abutment can be moved until it abuts against the front-side housing cover of the door closer housing. In its end positions, the spring abutment bears against the respective end stop. If, after reaching the end position, the adjusting spindle continues to be acted upon in the relevant direction of rotation, the spring abutment is braced against the respective end stop. Should the bias the coil spring are changed starting from these ratios, the spring abutment is first to be released from the respective end stop. For this purpose, the adjusting spindle is to be rotated in a direction of rotation which is opposite to the direction of rotation of the adjusting spindle when approaching the end stop by the spring abutment.
  • a rotational movement of the adjusting spindle relative to the spring abutment is generated between the spring abutment and the helical spring supported on the spring abutment, due to which the spring abutment together with the helical spring forms a non-rotatable unit and does not rotate with the rotationally actuated adjusting spindle.
  • the spring abutment on its outer circumference with radial projections and the door closer housing on his Inner wall to be provided with along the housing axis of the door closer housing extending guide grooves, in which engage the radial projections of the spring abutment.
  • the object of the present invention starting from the generic prior art is to provide a door closer with an overload protection for the device for adjusting the bias of the closing spring.
  • the spring abutment is designed as an abutment circular disc concentric with the spindle axis of the screw drive and with the interior of the door closer housing, whose diameter corresponds at most to the diameter of the interior of the door closer housing.
  • the abutment circular disc can be provided with a low production engineering and with a low financial cost.
  • a constructively elaborate Longitudinal guide of the abutment circular disc along the spindle axis of the screw drive or the housing axis of the door closer housing is not provided.
  • the application of force to the spring abutment by the closing spring ensures that after the movement of the spring abutment into the closing piston-side end position and / or into the housing-side end position and the associated "caking" of the spring abutment at the respective end stop, an action on the adjusting spindle in the corresponding direction of rotation Rotary movement of the adjusting spindle relative to the spring abutment has the consequence and thus the spring abutment is released from the previously approached end stop.
  • the rotational movement of the adjusting spindle should end in the clamping direction of rotation and in the direction of relaxation as soon as the spring abutment has reached the closing piston-side end position or the housing-side end position.
  • the adjusting spindle after reaching the Schiererkolben salen end position by the spring abutment further in the clamping direction of rotation or after reaching the housing-side end position by the spring abutment further in the relaxation direction of rotation is subjected to force.
  • supported on the spring abutment closing spring allows that the adjusting spindle is jointly rotated with the spring abutment acting on the respective end stop in the clamping direction of rotation or in the relaxation direction of rotation.
  • the support of the closing spring on the spring abutment assumes the function of a slip clutch.
  • an overload protection is provided for the device for adjusting the bias of the closing spring.
  • a stop plate is provided as Schconvergeerkolben industrialer end stop and / or as a housing-side end stop for the spring abutment in a preferred embodiment of the invention.
  • the plate-like end stop provides a relatively large-scale system for moving in the respective end position spring abutment and ensures in this way for defined conditions at the respective end stop.
  • the claims 4 to 11 relate to the invention preferred measures to ensure a functionally reliable adjustment of the bias of the shutter spring.
  • the claimed measures may be provided individually or in combination with each other.
  • the amount of force with which the closing spring acts on the spring abutment selected appropriately.
  • the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment taken into account as the decisive criterion.
  • the radial distance from the spindle axis, with which the spring abutment in the Schröerkolben salen end position and / or in the housing-side end position acts on the respective end stop and the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment, each other are coordinated.
  • the thread pitch of the threaded actuator according to the invention is such that for adjusting the bias of the closing spring, the adjusting spindle can be rotated relative to the spring abutment and that at the same time excluded from the application of force to the spring abutment by the closing spring rotational movement of the spring abutment relative to the adjusting spindle is.
  • a threaded actuator 1 for a door closer comprises an adjusting spindle 2 with a spindle axis 3.
  • the adjusting spindle 2 is provided with an adjusting external thread 5.
  • the adjusting spindle 2 meshes with an adjusting internal thread 6 on a spring abutment 7 designed as spring plate. Both the adjusting spindle 2 and the spring plate 7 are made of steel.
  • a circular stop disc 8 is provided, which is riveted to the shaft 4 of the adjusting spindle 2.
  • a likewise disc-like housing-side end stop for the spring plate 7 is formed in the form of an outer collar 9 at a distance from the stop disc 8 to the shaft 4 of the adjusting spindle 2.
  • the adjusting spindle 2 has a sealing groove 10 and an actuating end 11 with a hexagon socket 12 ( FIG. 2 ).
  • FIG. 1 shows the screw drive 1 in a functional state in which the spring plate 7 rests against the stop plate 8.
  • the screw drive is 1 in FIG. 2 shown in installation position on a door closer housing 13.
  • the adjusting spindle 2 is rotatably mounted on a front-side housing cover 14 of the door closer housing 13 about a housing axis 15 and fixed in the direction of the spindle axis 3.
  • the housing axis 15 of the door closer housing 13 coincides with the spindle axis 3.
  • the spring plate 7 is designed as a concentric with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 abutment circular disc.
  • the adjusting spindle 2 by means of an inserted into the hexagon socket 12 hexagon in a clamping direction of rotation (arrow 16 in FIG. 2 ) and in a relaxation direction of rotation (arrow 17 in FIG. 2 ) to be turned around.
  • the spring plate 7 is acted upon on the side remote from the housing cover 14 side by a closing spring designed as a helical spring 18.
  • the closing spring 18 is supported directly on the spring plate 7.
  • the closing spring 18 has a coincident with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 spring axis 19 and is biased along the spring axis 19 between the spring plate 7 and a conventional closer piston not shown in the figures of the door closer. Due to its bias, the closing spring 18 acts on the spring plate 7 along the spring axis 19 with an in FIG. 2 rightward force. Under the action of this force, the adjusting spindle 2 is supported with the rear side of the outer collar 9 via a sliding ring on the housing cover 14. An inserted into the seal groove 10 of the adjusting spindle 2 sealing ring 20th seals a cylindrical interior 21 of the door closer housing 13 from the environment. The cylinder axis of the cylindrical interior 21 forms the housing axis 15 of the door closer housing 13. The diameter of the cylindrical interior 21 is greater than the diameter of the concentric with the interior 21 spring plate. 7
  • r 1 , r 2 and r 3 radial distances r 1 , r 2 and r 3 .
  • r 1 is the radial distance from the spindle axis 3, with which the closing spring 18 is supported on the spring plate 7.
  • r 2 the radial distance from the spindle axis 3 is designated, with which the spring plate 7 in the position according to the Figures 1 and 2 the stopper disc 8 and in the position according to FIG. 4 the outer collar 9 is acted upon along the spindle axis 3.
  • r 3 is the radial distance from the spindle axis 3, with which the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate 7 supported along the spindle axis 3 to each other.
  • the closer spring 18 is biased by means of the screw drive maximum 1.
  • the spring plate 7 is in its Sch Strukturerkolben folken end position. In this position, the spring plate 7 has been moved by a rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16. Due to the rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16, the spring plate 7 has performed a clamping feed movement in the direction of an arrow 22. In the course of the clamping feed movement of the spring plate 7 came to the stop plate 8 to the plant. As a result of a corresponding rotational actuation of the adjusting spindle 2, the spring plate 7 was braced axially against the stop plate 8 to a small extent. Accordingly, in the functional state according to FIG. 2 the stopper plate 8 by the spring plate 7 in the direction 22 of the clamping feed movement of the spring plate 7 subjected to force.
  • the adjusting spindle 2 is acted upon by a sufficiently large force in the clamping direction of rotation 16, the adjusting spindle 2 rotates together with the spring plate 7 sitting thereon relative to the closing spring 18 in the clamping direction of rotation 16.
  • the friction resistance is thereby to overcome, which is opposed due to the application of the spring plate 7 by the closing spring 18 of the rotational movement of the spring plate 7 in the clamping direction of rotation. Due to a corresponding dimensioning of the force exerted by the closing spring 18 along the housing axis 15 on the spring plate 7 force the spring plate 7 non-destructive slip on him acting on the end face of the closing spring 18 along.
  • the adjusting spindle 2 is in the relaxation direction of rotation 17 to rotate about the spindle axis 13.
  • an axial displacement of the spring plate 7 from the position according to FIG. 2 can cause to the right, the adjusting spindle 2 must rotate in the relaxation direction of rotation 17 relative to the spring plate 7. This is in the case of the arrangement according to FIG. 2 This ensures that the spring plate 7 due to the application of force by the closing spring 18 regardless of the rotational actuation of the adjusting spindle 2 in the relaxation direction of rotation 17 retains its rotational position relative to the door closer housing 13.
  • the rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 rotationally fixed arrangement of the spring plate 7 is achieved by the interaction of various factors.
  • the friction torque between the closer spring 18 and the spring plate 7 is greater than the sum of the friction torque between the adjusting external thread 5 and the adjusting internal thread 6 and the "Anbackmoment" between the spring plate 7 and the stop plate 8.
  • the thread pitch of the threaded actuator 1 is relatively large.
  • the upper limit of the thread pitch of the screw drive 1 in turn depends on the coefficient of friction between the adjusting external thread 5 on the adjusting spindle 2 and the adjusting internal thread 6 on the spring plate. 7
  • the adjusting spindle 2 is acted upon by a large force in the relaxation direction of rotation 17, then the adjusting spindle 2 rotates in the relaxation direction of rotation 17 and takes the spring plate 7 in the direction of rotation.
  • the turntable 7 slips non-destructive at the end face of the closing spring 18 acting on it and also on the housing cover 14 acted upon by it.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Description

Die Erfindung betrifft einen Türschließer

  • mit einem Türschließergehäuse, das einen zylindrischen Innenraum aufweist, dessen Zylinderachse eine Gehäuseachse des Türschließergehäuses bildet und der von einer parallel zu der Zylinderachse verlaufenden Innenwand des Türschließergehäuses begrenzt ist,
  • mit einem Schließerkolben, der in dem Innenraum des Türschließergehäuses längs der Gehäuseachse beweglich geführt ist,
  • mit einer als Schraubenfeder mit einer Federachse ausgebildeten Schließerfeder, die im Innenraum des Türschließergehäuses zwischen dem Schließerkolben und einem längs der Gehäuseachse von dem Schließerkolben beabstandeten Federwiderlager mit längs der Gehäuseachse verlaufender Federachse angeordnet ist und die einerseits federkolbenseitig und andererseits unter Kraftbeaufschlagung des Federwiderlagers in Richtung der Federachse unmittelbar an dem Federwiderlager abgestützt ist sowie
  • mit einem Gewindestellantrieb, mittels dessen das Federwiderlager unter Veränderung der Vorspannung der Schließerfeder längs der Gehäuseachse relativ zu dem Schließerkolben zustellbar ist und der eine Stellspindel umfasst, auf welcher das Federwiderlager aufsitzt und die eine längs der Gehäuseachse verlaufende Spindelachse aufweist und mit einem Stell-Außengewinde versehen ist, das mit einem Stell-Innengewinde des Federwiderlagers kämmt,
  • wobei die Stellspindel an dem Türschließergehäuse um die Spindelachse drehbar gelagert und relativ zu dem Federwiderlager in einer Spann-Drehrichtung sowie in einer zu der Spann-Drehrichtung gegenläufigen Entspannungs-Drehrichtung um die Spindelachse drehbar ist und wobei das Federwiderlager aufgrund einer relativ zu dem Federwiderlager ausgeführten Drehung der Stellspindel in der Spann-Drehrichtung längs der Spindelachse mit einer Spann-Vorschubbewegung in Richtung auf eine schließerkolbenseitige Endstellung bewegbar ist und in der schließerkolbenseitigen Endstellung einen schließerkolbenseitigen Endanschlag in Richtung der Spann-Vorschubbewegung beaufschlagt und wobei das Federwiderlager aufgrund einer relativ zu dem Federwiderlager ausgeführten Drehung der Stellspindel in der Entspannungs-Drehrichtung längs der Spindelachse mit einer zu der Spann-Vorschubbewegung gegenläufigen Entspannungs-Vorschubbewegung in Richtung auf eine gehäuseseitige Endstellung bewegbar ist und in der gehäuseseitigen Endstellung einen von dem schließerkolbenseitigen Endanschlag längs der Gehäuseachse beabstandeten gehäuseseitigen Endanschlag in Richtung der Entspannungs-Vorschubbewegung beaufschlagt,
  • wobei das Federwiderlager (7) als mit der Spindelachse (3) und mit dem Innenraum (21) des Türschließergehäuses (13) konzentrische Widerlager-Kreisscheibe ausgebildet ist, deren Durchmesser maximal dem Durchmesser des Innenraums (21) des Türschließergehäuses (13) entspricht und
  • wobei aufgrund der Kraftbeaufschlagung des Federwiderlagers (7) durch die Schließerfeder (18) die Stellspindel (2) relativ zu dem Federwiderlager (7) in der Spann-Drehrichtung (16) und in der Entspannungs-Drehrichtung (17) um die Spindelachse (3) drehbar ist und dadurch das Federwiderlager (7) mit einer Spann-Vorschubbewegung in Richtung auf die schließerkolbenseitige Endstellung und mit einer Entspannungs-Vorschubbewegung aus der schließerkolbenseitigen Endstellung in Richtung auf die gehäuseseitige Endstellung sowie mit einer Entspannungs-Vorschubbewegung in Richtung auf die gehäuseseitige Endstellung und mit einer Spannungs-Vorschubbewegung aus der gehäuseseitigen Endstellung in Richtung auf die schließerkolbenseitige Endstellung bewegbar ist.
The invention relates to a door closer
  • with a door closer housing, which has a cylindrical interior, whose cylinder axis forms a housing axis of the door closer housing and which is delimited by an inner wall of the door closer housing running parallel to the cylinder axis,
  • with a closing piston, which is movably guided in the interior of the door closer housing along the housing axis,
  • with a designed as a helical spring with a spring axis closing spring, which is arranged in the interior of the door closer housing between the closing piston and along the housing axis spaced from the closing piston spring abutment extending along the housing axis spring axis and the spring piston side on the one hand and on the other hand under force of the spring abutment in the direction of the spring axis is supported directly on the spring abutment and
  • with a threaded actuator, by means of which the spring abutment can be adjusted relative to the closing piston by changing the bias of the closing spring along the housing axis and comprising an adjusting spindle, on which the spring abutment is seated and which has a spindle axis extending along the housing axis and provided with a setting external thread is that meshes with an adjusting internal thread of the spring abutment,
  • wherein the adjusting spindle is rotatably mounted on the door closer housing about the spindle axis and is rotatable relative to the spring abutment in a clamping direction of rotation and in a direction opposite to the clamping direction of rotation relaxation direction of rotation about the spindle axis and wherein the spring abutment executed due to a relative to the spring abutment rotation the adjusting spindle in the clamping direction of rotation along the spindle axis with a clamping feed movement in the direction of a Schließerkolbenseitige end position is movable and acted in the Schließerkolbenseitigen end position a Schließerkolbenseitigen stop in the direction of the clamping feed movement and wherein the spring abutment executed due to a relative to the spring abutment rotation the adjusting spindle in the relaxation direction of rotation along the spindle axis is displaceable in the direction of a housing-side end position with a counter to the clamping feed movement relaxation feed movement and applied in the housing-side end position spaced from the Schließerkolbenseitigen end stop along the housing axis housing-side end stop in the direction of the relaxation feed movement,
  • wherein the spring abutment (7) as with the spindle axis (3) and with the interior (21) of the door closer housing (13) concentric abutment circular disc is formed, the diameter of the maximum diameter of the interior (21) of the door closer housing (13) corresponds and
  • wherein due to the application of force to the spring abutment (7) by the closing spring (18) the adjusting spindle (2) relative to the spring abutment (7) in the clamping direction of rotation (16) and in the relaxation direction of rotation (17) about the spindle axis (3) is rotatable and thereby the spring abutment (7) with a clamping feed movement in the direction of the Schließerkolbenseitige end position and with a relaxation feed movement from Schließerkolbenseitigen end position in the direction of the housing-side end position and with a relaxation feed movement in the direction of the housing-side end position and a voltage feed movement from the housing-side end position in the direction of the Schließerkolbenseitige end position is movable.

Türschließer der vorstehenden Art sind aus DE 92 03 870 U1 und aus US 2003/ 0093872 A1 bekannt. Eine Schließerwelle ist dabei an einem Türschließergehäuse um eine Wellenachse drehbar gelagert und durchsetzt einen zylindrischen Innenraum des Türschließergehäuses. Ein Schließerkolben ist in dem Innenraum des Türschließergehäuses an einer Seite der Schließerwelle angeordnet und längs einer Gehäuseachse, die von der Zylinderachse des zylindrischen Innenraums des Türschließergehäuses gebildet wird, beweglich geführt. An der von der Schließerwelle abliegenden Seite des Schließerkolbens ist in dem zylindrischen Innenraum des Türschließergehäuses eine Schraubenfeder angeordnet, die einerseits an dem Schließerkolben und andererseits an einem stirnseitigen Gehäusedeckel des Türschließergehäuses abgestützt ist. Über eine Verzahnung der Schließerwelle und eine damit kämmende Gegenverzahnung an dem Schließerkolben oder über eine an der Schließerwelle vorgesehene Nockenscheibe, an welcher der Schließerkolben abgestützt ist, werden Drehbewegungen der Schließerwelle um die Wellenachse in lineare Bewegungen des Schließerkolbens längs der Gehäuseachse bzw. lineare Bewegungen des Schließerkolbens längs der Gehäuseachse in Drehbewegungen der Schließerwelle um die Wellenachse umgesetzt. Wird der mit dem Türschließer versehene Türflügel drehgeöffnet, so wird die Schließerwelle um die Wellenachse gedreht. Aufgrund der Drehbewegung treibt die Schließerwelle den Schließerkolben unter Vorspannung der zwischen dem Schließerkolben und dem stirnseitigen Gehäusedeckel angeordneten Schraubenfeder mit einer Bewegung längs der Gehäuseachse des Türschließergehäuses an. Wird der Türflügel nach dem Drehöffnen freigegeben, so längt sich die zuvor vorgespannte Schraubenfeder und treibt dabei den Schließerkolben mit einer gegen die Schließerwelle gerichteten Bewegung längs der Gehäuseachse des Türschließergehäuses an. Infolgedessen wird die Schließerwelle um die Wellenachse gedreht und die Drehbewegung der Schließerwelle bewirkt über das Gestänge eine selbsttätige Schließbewegung des Türflügels. Die Vorspannung der Schraubenfeder und somit die zum selbsttätigen Schließen des geöffneten Türflügels ausgeübte Schließkraft und die beim Öffnen des Türflügels zu überwindende Gegenkraft ist einstellbar. Zu diesem Zweck ist die Schraubenfeder an der von dem Schließerkolben abliegenden Seite nicht unmittelbar an dem stirnseitigen Gehäusedeckel des Türschließergehäuses sondern vielmehr an einem Federwiderlager abgestützt, das auf einer Stellspindel aufsitzt. Die Stellspindel erstreckt sich mit einer Spindelachse längs der Gehäuseachse des Türschließergehäuses und ist an dem stirnseitigen Deckel des Türschließergehäuses um die Spindelachse drehbar aber in Richtung der Spindelachse ortsunveränderlich gelagert. Ein Außengewinde der Stellspindel kämmt mit einem Innengewinde des Federwiderlagers. Durch Drehen der Stellspindel wird das Federwiderlager längs der Stellspindel in unterschiedliche Positionen bewegt und dadurch die Vorspannung der an dem Federwiderlager abgestützten Schraubenfeder variiert. Der Verstellweg des Federwiderlagers wird an dem zu dem Schließerkolben hin liegenden Ende der Stellspindel durch einen Anschlag begrenzt. In der entgegengesetzten Richtung kann das Federwiderlager bewegt werden, bis es an dem stirnseitigen Gehäusedeckel des Türschließergehäuses anschlägt. In seinen Endstellungen liegt das Federwiderlager an dem jeweiligen Endanschlag an. Wird nach Erreichen der Endstellung die Stellspindel weiterhin in der betreffenden Drehrichtung beaufschlagt, so wird das Federwiderlager gegen den jeweiligen Endanschlag verspannt. Soll die Vorspannung der Schraubenfeder ausgehend von diesen Verhältnissen verändert werden, so ist das Federwiderlager zunächst von dem betreffenden Endanschlag zu lösen. Zu diesem Zweck ist die Stellspindel in einer Drehrichtung zu drehen, welche der Drehrichtung der Stellspindel beim Anfahren des Endanschlags durch das Federwiderlager entgegengesetzt ist. Voraussetzung sowohl für die Bewegung des Federwiderlagers bis zum Erreichen einer Endstellung als auch für das Lösen des Federwiderlagers von dem jeweiligen Endanschlag ist eine Drehbewegung der Stellspindel relativ zu dem Federwiderlager. Zu diesem Zweck wird zwischen dem Federwiderlager und der an dem Federwiderlager abgestützten Schraubenfeder eine Reibung erzeugt, aufgrund derer das Federwiderlager gemeinsam mit der Schraubenfeder eine drehfeste Einheit bildet und nicht mit der drehbetätigten Stellspindel mitdreht.Door closers of the above type are made DE 92 03 870 U1 and from US 2003/0093872 A1 known. A closer shaft is rotatably mounted on a door closer housing about a shaft axis and passes through a cylindrical interior of the door closer housing. A closing piston is arranged in the interior of the door closer housing on one side of the closer shaft and movably guided along a housing axis, which is formed by the cylinder axis of the cylindrical interior of the door closer housing. At the side remote from the closer shaft of the closer piston, a helical spring is arranged in the cylindrical interior of the door closer housing, which is supported on the one hand on the closing piston and on the other hand on a front-side housing cover of the door closer housing. About a toothing of the closer shaft and thus meshing counter-toothing on the closing piston or via a provided on the closer shaft cam, on which the closing piston is supported, rotational movements of the closer shaft are converted to the shaft axis in linear movements of the closing piston along the housing axis or linear movements of the closing piston along the housing axis in rotational movements of the closer shaft about the shaft axis. If the door leaf provided with the door closer is turned open, the closer shaft is rotated about the shaft axis. Due to the rotational movement, the closer shaft drives the closing piston under bias of the coil spring arranged between the closing piston and the front-side housing cover with a movement along the housing axis of the door closer housing. If the door leaf is released after the rotary opening, the previously preloaded coil spring lengthens and thereby drives the closing piston with a movement directed against the closer shaft along the housing axis of the door closer housing. As a result, the closer shaft is rotated about the shaft axis and the rotational movement of the closer shaft causes via the linkage an automatic closing movement of the door leaf. The bias of the coil spring and thus the force exerted to automatically close the open door leaf closing force and to be overcome when opening the door panel counterforce is adjustable. For this purpose, the coil spring is not supported on the side remote from the closing piston side directly on the front-side housing cover of the door closer housing but rather on a spring abutment which rests on an adjusting spindle. The adjusting spindle extends with a spindle axis along the housing axis of the door closer housing and is rotatably mounted on the front-side cover of the door closer housing about the spindle axis but in the direction of the spindle axis. An external thread of the adjusting spindle meshes with an internal thread of the spring abutment. By turning the adjusting spindle, the spring abutment is moved along the adjusting spindle in different positions and thereby varies the bias of the supported on the spring abutment coil spring. The displacement of the spring abutment is limited at the lying to the closing piston end of the adjusting spindle by a stop. In the opposite direction, the spring abutment can be moved until it abuts against the front-side housing cover of the door closer housing. In its end positions, the spring abutment bears against the respective end stop. If, after reaching the end position, the adjusting spindle continues to be acted upon in the relevant direction of rotation, the spring abutment is braced against the respective end stop. Should the bias the coil spring are changed starting from these ratios, the spring abutment is first to be released from the respective end stop. For this purpose, the adjusting spindle is to be rotated in a direction of rotation which is opposite to the direction of rotation of the adjusting spindle when approaching the end stop by the spring abutment. Prerequisite for both the movement of the spring abutment until reaching an end position and for releasing the spring abutment of the respective end stop is a rotational movement of the adjusting spindle relative to the spring abutment. For this purpose, a friction is generated between the spring abutment and the helical spring supported on the spring abutment, due to which the spring abutment together with the helical spring forms a non-rotatable unit and does not rotate with the rotationally actuated adjusting spindle.

Um eine Drehbewegung der Stellspindel relativ zu dem Federwiderlager zu gewährleisten und um zu vermeiden, dass die Stellspindel bei ihrer Drehbewegung das auf der Stellspindel aufsitzende Federwiderlager in Drehrichtung mitnimmt, ist es außerdem üblich, das Federwiderlager an seinem Außenumfang mit radialen Vorsprüngen und das Türschließergehäuse an seiner Innenwand mit längs der Gehäuseachse des Türschließergehäuses verlaufenden Führungsnuten zu versehen, in welche die radialen Vorsprünge des Federwiderlagers eingreifen.In order to ensure a rotational movement of the adjusting spindle relative to the spring abutment and to avoid that the adjusting spindle entrains in its rotational movement seated on the adjusting spindle spring abutment in the direction of rotation, it is also common, the spring abutment on its outer circumference with radial projections and the door closer housing on his Inner wall to be provided with along the housing axis of the door closer housing extending guide grooves, in which engage the radial projections of the spring abutment.

Die Aufgabe der vorliegenden Erfindung besteht ausgehend von dem gattungsgemäßen Stand der Technik darin, einen Türschließer mit einer Überlastsicherung für die Vorrichtung zur Verstellung der Vorspannung der Schließerfeder bereitzustellen.The object of the present invention, starting from the generic prior art is to provide a door closer with an overload protection for the device for adjusting the bias of the closing spring.

Erfindungsgemäß gelöst wird diese Aufgabe durch den Türschließer gemäß Anspruch 1.This object is achieved according to the invention by the door closer according to claim 1.

Anspruchsgemäß ist das Federwiderlager als mit der Spindelachse des Gewindestellantriebs und mit dem Innenraum des Türschließergehäuses konzentrische Widerlager-Kreisscheibe ausgebildet, deren Durchmesser maximal dem Durchmesser des Innenraums des Türschließergehäuses entspricht. Die Widerlager-Kreisscheibe kann mit einem geringen fertigungstechnischen und mit einem geringen finanziellen Aufwand bereitgestellt werden. Eine konstruktiv aufwändige Längsführung der Widerlager-Kreisscheibe längs der Spindelachse des Gewindestellantriebs bzw. der Gehäuseachse des Türschließergehäuses ist nicht vorgesehen. Für die zur Erzeugung einer Spann-Vorschubbewegung und/oder einer Entspannungs-Vorschubbewegung des Federwiderlagers erforderliche Relativbewegung zwischen der Stellspindel des Gewindestellantriebs und dem Federwiderlager sorgt die Schließerfeder und somit eine ohnehin vorhandene Türschließerkomponente. Aufgrund der Kraftbeaufschlagung durch die Schließerfeder ist das Federwiderlager daran gehindert, Drehbewegungen der Stellspindel des Gewindestellantriebs in der Spann-Drehrichtung und/oder in der Entspannungs-Drehrichtung mitzuvollziehen. Insbesondere sorgt die Kraftbeaufschlagung des Federwiderlagers durch die Schließerfeder dafür, dass nach der Bewegung des Federwiderlagers in die schließerkolbenseitige Endstellung und/oder in die gehäuseseitige Endstellung und dem damit verbundenen "Anbacken" des Federwiderlagers an dem jeweiligen Endanschlag eine Beaufschlagung der Stellspindel in der entsprechenden Drehrichtung eine Drehbewegung der Stellspindel relativ zu dem Federwiderlager zur Folge hat und das Federwiderlager folglich von dem zuvor angefahrenen Endanschlag freikommt.According to the claim, the spring abutment is designed as an abutment circular disc concentric with the spindle axis of the screw drive and with the interior of the door closer housing, whose diameter corresponds at most to the diameter of the interior of the door closer housing. The abutment circular disc can be provided with a low production engineering and with a low financial cost. A constructively elaborate Longitudinal guide of the abutment circular disc along the spindle axis of the screw drive or the housing axis of the door closer housing is not provided. For the generation of a clamping feed movement and / or a relaxation feed movement of the spring abutment required relative movement between the adjusting spindle of the screw drive and the spring abutment provides the closing spring and thus an already existing door closer component. Due to the application of force by the closing spring, the spring abutment is prevented from being able to follow rotational movements of the adjusting spindle of the screw drive in the clamping direction of rotation and / or in the direction of unclamping. In particular, the application of force to the spring abutment by the closing spring ensures that after the movement of the spring abutment into the closing piston-side end position and / or into the housing-side end position and the associated "caking" of the spring abutment at the respective end stop, an action on the adjusting spindle in the corresponding direction of rotation Rotary movement of the adjusting spindle relative to the spring abutment has the consequence and thus the spring abutment is released from the previously approached end stop.

An sich sollte die Drehbewegung der Stellspindel in der Spann-Drehrichtung und in der Entspannungs-Drehrichtung enden, sobald das Federwiderlager die schließerkolbenseitige Endstellung oder die gehäuseseitige Endstellung erreicht hat. In der Praxis ist aber nicht auszuschließen, dass die Stellspindel nach Erreichen der schließerkolbenseitigen Endstellung durch das Federwiderlager weiter in der Spann-Drehrichtung oder nach Erreichen der gehäuseseitigen Endstellung durch das Federwiderlager weiter in der Entspannungs-Drehrichtung kraftbeaufschlagt wird. In derartigen Fällen lässt erfindungsgemäß die an dem Federwiderlager abgestützte Schließerfeder zu, dass die Stellspindel gemeinschaftlich mit dem den jeweiligen Endanschlag beaufschlagenden Federwiderlager weiter in der Spann-Drehrichtung oder in der Entspannungs-Drehrichtung gedreht wird. Die Abstützung der Schließerfeder an dem Federwiderlager übernimmt dabei die Funktion einer Rutschkupplung. Dadurch wird für die Vorrichtung zur Verstellung der Vorspannung der Schließerfeder eine Überlastsicherung bereitgestellt. Das von der Stellspindel in der jeweiligen Drehrichtung mitgenommene Federwiderlager kann aufgrund seiner Geometrie und seiner mit der Gehäuseachse des Türschließers konzentrischen Anordnung die Drehbewegung der Stellspindel mitvollziehen, ohne mit der Innenwand des Türschließergehäuses zu kollidieren.As such, the rotational movement of the adjusting spindle should end in the clamping direction of rotation and in the direction of relaxation as soon as the spring abutment has reached the closing piston-side end position or the housing-side end position. In practice, however, can not be ruled out that the adjusting spindle after reaching the Schließerkolbenseitigen end position by the spring abutment further in the clamping direction of rotation or after reaching the housing-side end position by the spring abutment further in the relaxation direction of rotation is subjected to force. In such cases, according to the invention supported on the spring abutment closing spring allows that the adjusting spindle is jointly rotated with the spring abutment acting on the respective end stop in the clamping direction of rotation or in the relaxation direction of rotation. The support of the closing spring on the spring abutment assumes the function of a slip clutch. As a result, an overload protection is provided for the device for adjusting the bias of the closing spring. The entrained by the adjusting spindle in the respective direction of rotation spring abutment can due to its geometry and its with the housing axis of the door closer Concentric arrangement the rotation of the adjusting spindle mitvollziehen without colliding with the inner wall of the door closer housing.

Besondere Ausführungsarten des Türschließers nach dem unabhängigen Anspruch 1 ergeben sich aus den abhängigen Ansprüchen 2 bis 11.Particular embodiments of the door closer according to the independent claim 1 emerge from the dependent claims 2 to 11.

Ausweislich Anspruch 2 ist in bevorzugter Ausgestaltung der Erfindung eine Anschlagplatte als schließerkolbenseitiger Endanschlag und/oder als gehäuseseitiger Endanschlag für das Federwiderlager vorgesehen. Der plattenartige Endanschlag bietet eine verhältnismäßig großflächige Anlage für das in die jeweilige Endstellung bewegte Federwiderlager und sorgt auf diese Art und Weise für definierte Verhältnisse an dem jeweiligen Endanschlag. Infolgedessen ist es möglich, die Beaufschlagung des Federwiderlagers durch die Schließerfeder derart zu gestalten und generell die Parameter, die für einen funktionssicheren Betrieb des Gewindestellantriebs maßgebend sind, derart zu definieren, dass eine funktionssichere Einstellung der Vorspannung der Schließerfeder gewährleistet ist.As shown in claim 2, a stop plate is provided as Schließerkolbenseitiger end stop and / or as a housing-side end stop for the spring abutment in a preferred embodiment of the invention. The plate-like end stop provides a relatively large-scale system for moving in the respective end position spring abutment and ensures in this way for defined conditions at the respective end stop. As a result, it is possible to make the loading of the spring abutment by the closing spring in such a way and generally the parameters that are decisive for a functionally reliable operation of the screw drive, to define such that a functionally reliable adjustment of the bias of the shutter spring is ensured.

Im Interesse einer möglichst einfachen und kostengünstigen Fertigung des schließerkolbenseitigen Endanschlags und/oder des gehäuseseitigen Endanschlags für das Federwiderlager ist ausweislich Anspruch 3 als Anschlagplatte eine mit der Stellspindel konzentrische Anschlag-Kreisscheibe vorgesehen.In the interest of the simplest possible and cost-effective production of Schließerkolbenseitigen end stop and / or the housing-side end stop for the spring abutment is shown in claim 3 as a stop plate concentric with the adjusting stop disk provided.

Die Ansprüche 4 bis 11 betreffen erfindungsgemäß bevorzugte Maßnahmen zur Gewährleistung einer funktionssicheren Einstellung der Vorspannung der Schließerfeder. Die anspruchsgemäßen Maßnahmen können einzeln oder in Kombination miteinander vorgesehen sein.The claims 4 to 11 relate to the invention preferred measures to ensure a functionally reliable adjustment of the bias of the shutter spring. The claimed measures may be provided individually or in combination with each other.

Gemäß Anspruch 4 ist der Betrag der Kraft, mit welcher die Schließerfeder das Federwiderlager beaufschlagt, zweckentsprechend gewählt.According to claim 4, the amount of force with which the closing spring acts on the spring abutment, selected appropriately.

Gemäß Anspruch 5 wird der radiale Abstand von der Spindelachse, mit welchem die Schließerfeder an dem Federwiderlager abgestützt ist, als maßgebendes Kriterium berücksichtigt. Ausweislich Anspruch 6 wird auf den radialen Abstand von der Spindelachse abgestellt, mit welchem das Federwiderlager in der schließerkolbenseitigen Endstellung den schließerkolbenseitigen Endanschlag und/oder in der gehäuseseitigen Endstellung den gehäuseseitigen Endanschlag beaufschlagt.According to claim 5, the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment, taken into account as the decisive criterion. As shown in claim 6 is placed on the radial distance from the spindle axis, with which the spring abutment in the Schließerkolbenseitigen End position the closing piston-side end stop and / or applied in the housing-side end position of the housing-side end stop.

Insbesondere ist vorgesehen, dass der radiale Abstand von der Spindelachse, mit welchem das Federwiderlager in der schließerkolbenseitigen Endstellung und/ oder in der gehäuseseitigen Endstellung den jeweiligen Endanschlag beaufschlagt und der radiale Abstand von der Spindelachse, mit welchem die Schließerfeder an dem Federwiderlager abgestützt ist, aufeinander abgestimmt sind.In particular, it is provided that the radial distance from the spindle axis, with which the spring abutment in the Schließerkolbenseitigen end position and / or in the housing-side end position acts on the respective end stop and the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment, each other are coordinated.

An dem Türschließer nach Anspruch 7 ist der radiale Abstand von der Spindelachse, mit welchem das Stell-Außengewinde der Stellspindel und das Stell-Innengewinde des Federwiderlagers längs der Spindelachse aneinander abgestützt sind, derart gewählt, dass die Stellspindel die für die Einstellung der Vorspannung der Schließerfeder erforderlichen Drehbewegungen relativ zu dem Federwiderlager ausführen kann.At the door closer according to claim 7, the radial distance from the spindle axis, with which the adjusting external thread of the adjusting spindle and the adjusting internal thread of the spring abutment are supported along the spindle axis to each other, chosen such that the adjusting spindle for adjusting the bias of the closing spring required rotational movements relative to the spring abutment can perform.

Ausweislich Anspruch 8 ist die Gewindesteigung an dem erfindungsgemäßen Gewindestellantrieb derart bemessen, dass zur Verstellung der Vorspannung der Schließerfeder die Stellspindel relativ zu dem Federwiderlager gedreht werden kann und dass gleichzeitig eine aus der Kraftbeaufschlagung des Federwiderlagers durch die Schließerfeder resultierende Drehbewegung des Federwiderlagers relativ zu der Stellspindel ausgeschlossen ist.As shown in claim 8, the thread pitch of the threaded actuator according to the invention is such that for adjusting the bias of the closing spring, the adjusting spindle can be rotated relative to the spring abutment and that at the same time excluded from the application of force to the spring abutment by the closing spring rotational movement of the spring abutment relative to the adjusting spindle is.

Im Falle der Erfindungsbauart nach den Ansprüchen 9 bis 11 sind die Reibungskoeffizienten zwischen unterschiedlichen Türschließerkomponenten zweckentsprechend gewählt. Dabei betrifft Anspruch 9 den Reibungskoeffizienten zwischen dem Federwiderlager und der an dem Federwiderlager abgestützten Schließerfeder, Anspruch 10 den Reibungskoeffizienten zwischen dem Stell-Außengewinde der Stellspindel und dem Stell-Innengewinde des Federwiderlagers und Anspruch 11 den Reibungskoeffizienten zwischen dem schließerkolbenseitigen Endanschlag und/oder dem gehäuseseitigen Endanschlag einerseits und dem in der schließerkolbenseitigen Endstellung bzw. der gehäuseseitigen Endstellung an dem jeweiligen Endanschlag abgestützten Federwiderlager andererseits. Eine Einflussnahme auf die maßgebenden Reibungskoeffizienten ist insbesondere durch eine entsprechende Materialwahl möglich. Etwa für die mit dem Stell-Außengewinde versehene Stellspindel und das mit dem Stell-Innengewinde versehene Federwiderlager wird erfindungsgemäß Stahl als Werkstoff bevorzugt.In the case of Erfindungsbauart according to claims 9 to 11, the friction coefficients between different door closer components are chosen appropriately. In this case, claim 9, the coefficient of friction between the spring abutment and supported on the spring abutment closing spring, claim 10 the coefficient of friction between the adjusting outer thread of the adjusting spindle and the adjusting internal thread of the spring abutment and claim 11 the coefficient of friction between the Schließerkolbenseitigen stop and / or the housing-side end stop on the one hand and in the Schließerkolbenseitigen end position or the housing-side end position supported on the respective end stop spring abutment on the other. An influence on the relevant coefficients of friction is possible in particular by an appropriate choice of material. About for those with the Stell-externally threaded adjusting spindle and provided with the adjusting internal thread spring abutment steel is preferred as a material according to the invention.

Nachfolgend wird die Erfindung anhand beispielhafter schematischer Darstellungen näher erläutert. Es zeigen:

Figur 1
einen Gewindestellantrieb zum Einstellen der Vorspannung einer Schließerfeder eines Türschließers,
Figur 2
den Gewindestellantrieb gemäß Figur 1 in Einbaulage an einem Türschließergehäuse und
Figuren 3 und 4
die Anordnung gemäß Figur 2 mit von Figur 2 abweichenden Funktionszuständen des Gewindestellantriebs.
The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it:
FIG. 1
a threaded actuator for adjusting the bias of a closing spring of a door closer,
FIG. 2
the threaded actuator according to FIG. 1 in installation position on a door closer housing and
FIGS. 3 and 4
the arrangement according to FIG. 2 With FIG. 2 deviating functional states of the threaded actuator.

Gemäß Figur 1 umfasst ein Gewindestellantrieb 1 für einen Türschließer eine Stellspindel 2 mit einer Spindelachse 3. An einem Schaft 4 ist die Stellspindel 2 mit einem Stell-Außengewinde 5 versehen. An dem Stell-Außengewinde 5 kämmt die Stellspindel 2 mit einem Stell-Innengewinde 6 an einem als Federteller 7 ausgebildeten Federwiderlager. Sowohl die Stellspindel 2 als auch der Federteller 7 sind aus Stahl gefertigt.According to FIG. 1 a threaded actuator 1 for a door closer comprises an adjusting spindle 2 with a spindle axis 3. On a shaft 4, the adjusting spindle 2 is provided with an adjusting external thread 5. At the adjusting external thread 5, the adjusting spindle 2 meshes with an adjusting internal thread 6 on a spring abutment 7 designed as spring plate. Both the adjusting spindle 2 and the spring plate 7 are made of steel.

Als schließerkolbenseitiger Endanschlag für den Federteller 7 ist an dem in Figur 1 linken Längsende der Stellspindel 2 eine kreisförmige Anschlagscheibe 8 vorgesehen, die mit dem Schaft 4 der Stellspindel 2 vernietet ist.As Schließerkolbenseitiger end stop for the spring plate 7 is connected to the in FIG. 1 left longitudinal end of the adjusting spindle 2, a circular stop disc 8 is provided, which is riveted to the shaft 4 of the adjusting spindle 2.

Ein gleichfalls scheibenartiger gehäuseseitiger Endanschlag für den Federteller 7 ist in Form eines Außenbundes 9 mit Abstand von der Anschlagscheibe 8 an den Schaft 4 der Stellspindel 2 angeformt. An der von dem Federteller 7 abliegenden Seite des Außenbundes 9 weist die Stellspindel 2 eine Dichtungsnut 10 sowie ein Betätigungsende 11 mit einem Innensechskant 12 auf (Figur 2).A likewise disc-like housing-side end stop for the spring plate 7 is formed in the form of an outer collar 9 at a distance from the stop disc 8 to the shaft 4 of the adjusting spindle 2. At the side remote from the spring plate 7 side of the outer collar 9, the adjusting spindle 2 has a sealing groove 10 and an actuating end 11 with a hexagon socket 12 ( FIG. 2 ).

Figur 1 zeigt den Gewindestellantrieb 1 in einem Funktionszustand, in welchem der Federteller 7 an der Anschlagscheibe 8 anliegt. Mit diesem Funktionszustand ist der Gewindestellantrieb 1 in Figur 2 in Einbaulage an einem Türschließergehäuse 13 gezeigt. Dabei ist die Stellspindel 2 an einem stirnseitigen Gehäusedeckel 14 des Türschließergehäuses 13 um eine Gehäuseachse 15 drehbar und in Richtung der Spindelachse 3 ortsfest gelagert. Die Gehäuseachse 15 des Türschließergehäuses 13 fällt mit der Spindelachse 3 zusammen. Der Federteller 7 ist als eine mit der Spindelachse 3 der Stellspindel 2 und der Gehäuseachse 15 des Türschließergehäuses 13 konzentrische Widerlager-Kreisscheibe ausgeführt. Um die Spindelachse 3 und die Gehäuseachse 15 kann die Stellspindel 2 mit Hilfe eines in den Innensechskant 12 eingesteckten Außensechskants in einer Spann-Drehrichtung (Pfeil 16 in Figur 2) und in einer Entspannungs-Drehrichtung (Pfeil 17 in Figur 2) gedreht werden. FIG. 1 shows the screw drive 1 in a functional state in which the spring plate 7 rests against the stop plate 8. With this functional status, the screw drive is 1 in FIG. 2 shown in installation position on a door closer housing 13. In this case, the adjusting spindle 2 is rotatably mounted on a front-side housing cover 14 of the door closer housing 13 about a housing axis 15 and fixed in the direction of the spindle axis 3. The housing axis 15 of the door closer housing 13 coincides with the spindle axis 3. The spring plate 7 is designed as a concentric with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 abutment circular disc. To the spindle axis 3 and the housing axis 15, the adjusting spindle 2 by means of an inserted into the hexagon socket 12 hexagon in a clamping direction of rotation (arrow 16 in FIG. 2 ) and in a relaxation direction of rotation (arrow 17 in FIG FIG. 2 ) to be turned around.

Der Federteller 7 wird an der von dem Gehäusedeckel 14 abliegenden Seite von einer als Schraubenfeder ausgeführten Schließerfeder 18 beaufschlagt. Dabei ist die Schließerfeder 18 unmittelbar an dem Federteller 7 abgestützt.The spring plate 7 is acted upon on the side remote from the housing cover 14 side by a closing spring designed as a helical spring 18. In this case, the closing spring 18 is supported directly on the spring plate 7.

Die Schließerfeder 18 besitzt eine mit der Spindelachse 3 der Stellspindel 2 und der Gehäuseachse 15 des Türschließergehäuses 13 zusammenfallende Federachse 19 und ist längs der Federachse 19 zwischen dem Federteller 7 und einem in den Abbildungen nicht gezeigten herkömmlichen Schließerkolben des Türschließers vorgespannt. Aufgrund ihrer Vorspannung beaufschlagt die Schließerfeder 18 den Federteller 7 längs der Federachse 19 mit einer in Figur 2 nach rechts gerichteten Kraft. Unter der Wirkung dieser Kraft ist die Stellspindel 2 mit der Rückseite des Außenbundes 9 über einen Gleitring an dem Gehäusedeckel 14 abgestützt. Ein in die Dichtungsnut 10 der Stellspindel 2 eingelegter Dichtring 20 dichtet einen zylindrischen Innenraum 21 des Türschließergehäuses 13 gegen die Umgebung ab. Die Zylinderachse des zylindrischen Innenraums 21 bildet die Gehäuseachse 15 des Türschließergehäuses 13. Der Durchmesser des zylindrischen Innenraums 21 ist größer als der Durchmesser des mit dem Innenraum 21 konzentrischen Federtellers 7.The closing spring 18 has a coincident with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 spring axis 19 and is biased along the spring axis 19 between the spring plate 7 and a conventional closer piston not shown in the figures of the door closer. Due to its bias, the closing spring 18 acts on the spring plate 7 along the spring axis 19 with an in FIG. 2 rightward force. Under the action of this force, the adjusting spindle 2 is supported with the rear side of the outer collar 9 via a sliding ring on the housing cover 14. An inserted into the seal groove 10 of the adjusting spindle 2 sealing ring 20th seals a cylindrical interior 21 of the door closer housing 13 from the environment. The cylinder axis of the cylindrical interior 21 forms the housing axis 15 of the door closer housing 13. The diameter of the cylindrical interior 21 is greater than the diameter of the concentric with the interior 21 spring plate. 7

In Figur 2 veranschaulicht sind radiale Abstände r1, r2 und r3. Bei r1 handelt es sich um den radialen Abstand von der Spindelachse 3, mit welchem die Schließerfeder 18 an dem Federteller 7 abgestützt ist. Mit r2 ist der radiale Abstand von der Spindelachse 3 bezeichnet, mit welchem der Federteller 7 in der Position gemäß den Figuren 1 und 2 die Anschlagscheibe 8 und in der Position gemäß Figur 4 den Außenbund 9 längs der Spindelachse 3 beaufschlagt. r3 ist der radiale Abstand von der Spindelachse 3, mit welchem das Stell-Außengewinde 5 der Stellspindel 2 und das Stell-Innengewinde 6 des Federtellers 7 längs der Spindelachse 3 aneinander abgestützt.In FIG. 2 illustrated are radial distances r 1 , r 2 and r 3 . When r 1 is the radial distance from the spindle axis 3, with which the closing spring 18 is supported on the spring plate 7. With r 2 , the radial distance from the spindle axis 3 is designated, with which the spring plate 7 in the position according to the Figures 1 and 2 the stopper disc 8 and in the position according to FIG. 4 the outer collar 9 is acted upon along the spindle axis 3. r 3 is the radial distance from the spindle axis 3, with which the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate 7 supported along the spindle axis 3 to each other.

In dem Funktionszustand gemäß Figur 2 ist die Schließerfeder 18 mittels des Gewindestellantriebs 1 maximal vorgespannt. Der Federteller 7 befindet sich in seiner schließerkolbenseitigen Endstellung. In diese Position wurde der Federteller 7 durch eine Drehbetätigung der Stellspindel 2 in der Spann-Drehrichtung 16 bewegt. Aufgrund der Drehbetätigung der Stellspindel 2 in der Spann-Drehrichtung 16 hat der Federteller 7 eine Spann-Vorschubbewegung in Richtung eines Pfeils 22 ausgeführt. Im Laufe der Spann-Vorschubbewegung kam der Federteller 7 an der Anschlagscheibe 8 zur Anlage. In Folge einer entsprechenden Drehbetätigung der Stellspindel 2 wurde der Federteller 7 gegen die Anschlagscheibe 8 in einem geringen Maße axial verspannt. Dementsprechend wird bei dem Funktionszustand gemäß Figur 2 die Anschlagscheibe 8 durch den Federteller 7 in der Richtung 22 der Spann-Vorschubbewegung des Federtellers 7 kraftbeaufschlagt.In the functional state according to FIG. 2 the closer spring 18 is biased by means of the screw drive maximum 1. The spring plate 7 is in its Schließerkolbenseitigen end position. In this position, the spring plate 7 has been moved by a rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16. Due to the rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16, the spring plate 7 has performed a clamping feed movement in the direction of an arrow 22. In the course of the clamping feed movement of the spring plate 7 came to the stop plate 8 to the plant. As a result of a corresponding rotational actuation of the adjusting spindle 2, the spring plate 7 was braced axially against the stop plate 8 to a small extent. Accordingly, in the functional state according to FIG. 2 the stopper plate 8 by the spring plate 7 in the direction 22 of the clamping feed movement of the spring plate 7 subjected to force.

Wird bei den Verhältnissen gemäß Figur 2 die Stellspindel 2 mit einer hinreichend großen Kraft in der Spann-Drehrichtung 16 beaufschlagt, so dreht sich die Stellspindel 2 gemeinsam mit dem darauf aufsitzenden Federteller 7 relativ zu der Schließerfeder 18 in der Spann-Drehrichtung 16. Dabei ist der Reibungswiderstand zu überwinden, der aufgrund der Beaufschlagung des Federtellers 7 durch die Schließerfeder 18 der Drehbewegung des Federtellers 7 in der Spann-Drehrichtung entgegengesetzt wird. Aufgrund einer entsprechenden Bemessung der von der Schließerfeder 18 längs der Gehäuseachse 15 auf den Federteller 7 ausgeübten Kraft kann der Federteller 7 zerstörungsfrei an der ihn beaufschlagenden Stirnfläche der Schließerfeder 18 entlang rutschen.Is in accordance with the conditions FIG. 2 the adjusting spindle 2 is acted upon by a sufficiently large force in the clamping direction of rotation 16, the adjusting spindle 2 rotates together with the spring plate 7 sitting thereon relative to the closing spring 18 in the clamping direction of rotation 16. The friction resistance is thereby to overcome, which is opposed due to the application of the spring plate 7 by the closing spring 18 of the rotational movement of the spring plate 7 in the clamping direction of rotation. Due to a corresponding dimensioning of the force exerted by the closing spring 18 along the housing axis 15 on the spring plate 7 force the spring plate 7 non-destructive slip on him acting on the end face of the closing spring 18 along.

Soll die Vorspannung der Schließerfeder 18 ausgehend von den Verhältnissen gemäß Figur 2 reduziert werden, so ist die Stellspindel 2 in der Entspannungs-Drehrichtung 17 um die Spindelachse 13 zu drehen. Damit eine entsprechende Drehbetätigung der Stellspindel 2 eine axiale Verlagerung des Federtellers 7 aus der Position gemäß Figur 2 nach rechts bewirken kann, muss sich die Stellspindel 2 in der Entspannungs-Drehrichtung 17 relativ zu dem Federteller 7 drehen. Dies wird im Falle der Anordnung gemäß Figur 2 dadurch sichergestellt, dass der Federteller 7 aufgrund der Kraftbeaufschlagung durch die Schließerfeder 18 ungeachtet der Drehbetätigung der Stellspindel 2 in der Entspannungs-Drehrichtung 17 seine Drehstellung gegenüber dem Türschließergehäuse 13 beibehält. Die bei der Drehung der Stellspindel 2 in der Entspannungs-Drehrichtung 17 drehfeste Anordnung des Federtellers 7 wird durch das Zusammenspiel verschiedener Faktoren erreicht.If the bias of the closing spring 18, starting from the conditions according to FIG. 2 can be reduced, the adjusting spindle 2 is in the relaxation direction of rotation 17 to rotate about the spindle axis 13. For a corresponding rotational actuation of the adjusting spindle 2, an axial displacement of the spring plate 7 from the position according to FIG. 2 can cause to the right, the adjusting spindle 2 must rotate in the relaxation direction of rotation 17 relative to the spring plate 7. This is in the case of the arrangement according to FIG. 2 This ensures that the spring plate 7 due to the application of force by the closing spring 18 regardless of the rotational actuation of the adjusting spindle 2 in the relaxation direction of rotation 17 retains its rotational position relative to the door closer housing 13. The rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 rotationally fixed arrangement of the spring plate 7 is achieved by the interaction of various factors.

Zweckentsprechend gewählt sind im Einzelnen

  • der Betrag der von der Schließerfeder 18 längs der Federachse 19 auf den Federteller 7 ausgeübten Kraft,
  • die radialen Abstände r1, r2, r3,
  • der Reibungskoeffizient zwischen der Schließerfeder 18 und dem Federteller 7,
  • der Reibungskoeffizient zwischen dem Federteller 7 und der Anschlagscheibe 8,
  • der Reibungskoeffizient zwischen dem Stell-Außengewinde 5 der Stellspindel 2 und dem Stell-Innengewinde 6 des Federtellers 7 sowie
  • die Gewindesteigung des Stell-Außengewindes 5 der Stellspindel 2 und des Stell-Innengewindes 6 des Federtellers 7.
Purposefully chosen are in detail
  • the amount of force exerted by the closing spring 18 along the spring axis 19 on the spring plate 7,
  • the radial distances r 1 , r 2 , r 3 ,
  • the friction coefficient between the closing spring 18 and the spring plate 7,
  • the friction coefficient between the spring plate 7 and the stop plate 8,
  • the friction coefficient between the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate 7 and
  • the thread pitch of the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate. 7

Das Reibmoment zwischen der Schließerfeder 18 und dem Federteller 7 ist größer als die Summe aus dem Reibmoment zwischen dem Stell-Außengewinde 5 und dem Stell-Innengewinde 6 und dem "Anbackmoment" zwischen dem Federteller 7 und der Anschlagscheibe 8. Um das "Anbackmoment" klein zu halten, ist die Gewindesteigung des Gewindestellantriebs 1 verhältnismäßig groß gewählt. Bei der Wahl der Gewindesteigung wurde beachtet, dass der Gewindestellantrieb 1 selbsthemmend sein muss und die Gewindesteigung des Gewindestellantriebs 1 daher eine bestimmte Obergrenze nicht übersteigen darf. Die Obergrenze der Gewindesteigung des Gewindestellantriebs 1 wiederum ist abhängig von dem Reibungskoeffizienten zwischen dem Stell-Außengewinde 5 an der Stellspindel 2 und dem Stell-Innengewinde 6 an dem Federteller 7.The friction torque between the closer spring 18 and the spring plate 7 is greater than the sum of the friction torque between the adjusting external thread 5 and the adjusting internal thread 6 and the "Anbackmoment" between the spring plate 7 and the stop plate 8. To the "starting torque" small to hold, the thread pitch of the threaded actuator 1 is relatively large. When selecting the thread pitch, it was noted that the threaded actuator 1 must be self-locking and the thread pitch of the threaded actuator 1 must therefore not exceed a certain upper limit. The upper limit of the thread pitch of the screw drive 1 in turn depends on the coefficient of friction between the adjusting external thread 5 on the adjusting spindle 2 and the adjusting internal thread 6 on the spring plate. 7

Aufgrund der in dem dargestellten Beispielsfall getroffenen Maßnahmen behält der Federteller 7 bei einer Drehung der Stellspindel 2 in der Entspannungs-Drehrichtung 17 seine Drehstellung um die Spindelachse 3 sowohl zu Beginn als auch im weiteren Verlauf der Drehbetätigung der Stellspindel 2 beibehält. Zu Beginn der Drehbetätigung der Stellspindel 2 wird das "Anbackmoment" überwunden, das aufgrund der Haftreibung zwischen dem Federteller 7 an der Anschiagscheibe 8 wirksam ist. Im weiteren Verlauf der Drehbetätigung der Stellspindel 2 wird zur Beibehaltung der Drehstellung des Federtellers 7 die zwischen der Stellspindel 2 und dem Federteller 7 auftretende Gleitreibung kompensiert.Due to the measures taken in the illustrated example case retains the spring plate 7 at a rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 its rotational position about the spindle axis 3 both at the beginning and in the further course of the rotational operation of the adjusting spindle 2 maintains. At the beginning of the rotary actuation of the adjusting spindle 2, the "starting torque" is overcome, which is effective due to the static friction between the spring plate 7 on the Anschiagscheibe 8. In the further course of the rotational actuation of the adjusting spindle 2, the sliding friction occurring between the adjusting spindle 2 and the spring plate 7 is compensated for maintaining the rotational position of the spring plate 7.

Alles in allem bewegt sich der aufgrund der Beaufschlagung durch die Schließerfeder 18 relativ zu dem Türschließergehäuse 13 drehfeste Federteller 7 infolge der Drehung der Stellspindel 2 in der Entspannungs-Drehrichtung 17 mit einer Entspannungs-Vorschubbewegung in Richtung eines Pfeils 23 aus der schließerkolbenseitigen Endstellung gemäß Figur 2 in die gehäuseseitige Endstellung gemäß Figur 4. In Figur 3 befindet sich der Federteller 7 in einer Zwischenstellung zwischen der schließerkolbenseitigen Endstellung und der gehäuseseitigen Endstellung.All in all, due to the action of the closing spring 18 relative to the door closer housing 13 rotatable spring plate 7 moves due to the rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 with a relaxation feed movement in the direction of an arrow 23 from the Schließerkolbenseitigen end position FIG. 2 in the housing-side end position according to FIG. 4 , In FIG. 3 is the spring plate 7 in an intermediate position between the Schließerkolbenseitigen end position and the housing-side end position.

In der gehäuseseitigen Endstellung gemäß Figur 4 beaufschlagt der Federteller 7 den an der Stellspindel 2 vorgesehenen und als gehäuseseitiger Endanschlag fungierenden Außenbund 9 in der Richtung 23 der Entspannungs-Vorschubbewegung. Außerdem ist der Federteller 7 längs der Gehäuseachse 15 an dem Gehäusedeckel 14 des Türschließergehäuses 13 abgestützt. Die Vorspannung der Schließerfeder 18 hat bei dem in Figur 4 veranschaulichten Funktionszustand des Gewindestellantriebs 1 den kleinstmöglichen Wert.In the housing-side end position according to FIG. 4 applied to the spring plate 7 provided on the adjusting spindle 2 and acting as a housing-side end stop outer collar 9 in the direction 23 of the relaxation feed movement. In addition, the spring plate 7 is supported along the housing axis 15 on the housing cover 14 of the door closer housing 13. The bias of the shutter spring 18 has in the in FIG. 4 illustrated functional state of the screw drive 1 the lowest possible value.

Wird bei den Verhältnissen gemäß Figur 4 die Stellspindel 2 mit einer großen Kraft in der Entspannungs-Drehrichtung 17 beaufschlagt, so dreht sich die Stellspindel 2 in der Entspannungs-Drehrichtung 17 und nimmt den Federteller 7 in Drehrichtung mit. Der Drehteller 7 rutscht dabei zerstörungsfrei an der ihn beaufschlagenden Stirnfläche der Schließerfeder 18 und auch an dem von ihm beaufschlagten Gehäusedeckel 14 entlang.Is in accordance with the conditions FIG. 4 the adjusting spindle 2 is acted upon by a large force in the relaxation direction of rotation 17, then the adjusting spindle 2 rotates in the relaxation direction of rotation 17 and takes the spring plate 7 in the direction of rotation. The turntable 7 slips non-destructive at the end face of the closing spring 18 acting on it and also on the housing cover 14 acted upon by it.

Soll der Federteller 7 aus der gehäuseseitigen Endstellung gemäß Figur 4 in Richtung auf die schließerkolbenseitige Endstellung gemäß Figur 2 zurückbewegt werden, so ist die Stellspindel 2 mittels des Betätigungswerkzeugs in der Spann-Drehrichtung 16 zu betätigen. In Folge der Kraftbeaufschlagung durch die Schließerfeder 18 behält der Federteller 7 aufgrund der vorstehend zu Figur 2 erläuterten Maßnahmen ungeachtet der Drehung der Stellspindel 2 in der Entspannungs-Drehrichtung 17 seine Drehstellung um die Spindelachse 3 bei. Infolgedessen kann sich der Federteller 7 von dem Außenbund 9 der Stellspindel 2 lösen und anschließend eine Spann-Vorschubbewegung in Richtung des Pfeils 22 ausführen.If the spring plate 7 from the housing-side end position according to FIG. 4 in the direction of the closing piston side end position according to FIG. 2 be moved back, so the adjusting spindle 2 is to be actuated by means of the actuating tool in the clamping direction of rotation 16. As a result of the application of force by the closing spring 18, the spring plate 7 retains due to the above FIG. 2 explained measures regardless of the rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 its rotational position about the spindle axis 3 at. As a result, the spring plate 7 can be released from the outer collar 9 of the adjusting spindle 2 and then perform a clamping feed movement in the direction of the arrow 22.

Claims (11)

  1. Door closer
    • having a door closer housing (13) which has a cylindrical inner space (21), whose cylinder axis forms a housing axis (15) of the door closer housing (13) and which is delimited by means of an inner wall of the door closer housing (13), which wall extends parallel with the cylinder axis,
    • having a closer piston which is movably guided in the inner space (21) of the door closer housing (13) along the housing axis (15),
    • having a closer spring (18) which is constructed as a helical spring with a spring axis (19), which closer spring (18) is arranged in the inner space (21) of the door closer housing (13) between the closer piston and a spring abutment (7) which is spaced apart from the closer piston along the housing axis (15) with the spring axis (19) extending along the housing axis (15) and which closer spring (18)is supported, on the one hand, at the closer piston side and, on the other hand, directly on the spring abutment (7), with the spring abutment (7) being acted on by the closer spring (18) with force in the direction of the spring axis (19), and
    • having a threaded positioning drive (1) by means of which the spring abutment (7), with the pretensioning of the closer spring (18) being changed, can be positioned along the housing axis (15) relative to the closer piston and which comprises an actuation spindle (2) on which the spring abutment (7) is seated and which has a spindle axis (3) which extends along the housing axis (15) and which actuation spindle (2)is provided with an outer actuation thread (5) which meshes with an inner actuation thread (6) of the spring abutment (7),
    • wherein the actuation spindle (2) is supported on the door closer housing (13) in such a manner that it is rotatable about the spindle axis (3) and can be rotated about the spindle axis (3) relative to the spring abutment (7) in a tensioning rotation direction (16) and in a relaxation rotation direction counter to the tensioning rotation direction (16), and wherein the spring abutment (7), as a result of a rotation of the actuation spindle (2) which is carried out relative to the spring abutment (7) in the tensioning rotation direction (16) can be moved along the spindle axis (3) with a tensioning advance movement in the direction towards a closer-piston-side end position and in the closer-piston-side end position acts on a closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement, and wherein the spring abutment (7), as a result of a rotation of the actuation spindle (2) which is carried out relative to the spring abutment (7) in the relaxation rotation direction (17), can be moved along the spindle axis (3) with a relaxation advance movement counter to the tensioning advance movement in the direction towards a housing-side end position and in the housing-side end position acts on a housing-side end stop (9), which is spaced apart from the closer-piston-side end stop (8) along the housing axis (15), in the direction (23) of the relaxation advance movement,
    • wherein the spring abutment (7) is constructed as a circular abutment disc which is concentric relative to the spindle axis (3) and the inner space (21) of the door closer housing (13) and whose diameter corresponds at a maximum to the diameter of the inner space (21) of the door closer housing (13), and
    • wherein, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position and with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position,
    characterised in that
    the actuation spindle (2) being rotated in the tensioning rotation direction (16) carries the spring abutment (7), which in the closer-piston-side end position acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement, with a rotation movement which is carried out in the tensioning rotation direction (16) about the spindle axis (3) and in this instance relative to the inner wall of the door closer housing (13) and/or in that the actuation spindle (2) being rotated in the relaxation rotation direction (17) carries the spring abutment (7), which in the housing-side end position acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement, with a rotation movement which is carried out in the relaxation rotation direction (17) about the spindle axis (3) and in this instance relative to the inner wall of the door closer housing (13).
  2. Door closer according to the preceding claim, characterised in that the closer-piston-side end stop (8) and/or the housing-side end stop (9) is/are constructed as a stop plate.
  3. Door closer according to claim 2, characterised in that a circular stop disc which is concentric relative to the actuation spindle (2) is provided as a stop plate.
  4. Door closer according to any one of the preceding claims, characterised in that the value of the application of force to the spring abutment (7) by the closer spring (18) is selected in such a manner that as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  5. Door closer according to any one of the preceding claims, characterised in that the radial distance (r1) from the spindle axis (3) with which the closer spring (18) is supported on the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  6. Door closer according to any one of the preceding claims, characterised in that the radial distance (r2) from the spindle axis (3) with which the spring abutment (7) in the closer-piston-side end position acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement and/or the radial distance (r2) from the spindle axis (3) with which the spring abutment (7) in the housing-side end position acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  7. Door closer according to any one of the preceding claims, characterised in that the radial distance (r3) from the spindle axis (3) with which the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) are supported one on the other along the spindle axis (3) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end-position in the direction towards the closer-piston-side end position.
  8. Door closer according to any one of the preceding claims, characterised in that the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) have a thread pitch due to which the threaded positioning drive (1) is self-locking and which is further selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  9. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the spring abutment (7) and the closer spring (18) which is supported on the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  10. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  11. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the closer-piston-side end stop (8) and the spring abutment (7) which acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement and/or the friction coefficient between the housing-side end stop (9) and the spring abutment (7) which acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
EP14161299.4A 2014-03-24 2014-03-24 Door closer Revoked EP2924216B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14161299.4A EP2924216B1 (en) 2014-03-24 2014-03-24 Door closer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14161299.4A EP2924216B1 (en) 2014-03-24 2014-03-24 Door closer

Publications (2)

Publication Number Publication Date
EP2924216A1 EP2924216A1 (en) 2015-09-30
EP2924216B1 true EP2924216B1 (en) 2017-05-03

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Application Number Title Priority Date Filing Date
EP14161299.4A Revoked EP2924216B1 (en) 2014-03-24 2014-03-24 Door closer

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116101790B (en) * 2023-04-07 2023-06-16 合肥百川自动化科技有限公司 Pneumatic pipeline conveyor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224300A1 (en) 1982-06-29 1983-12-29 Geze Gmbh DOOR CLOSER WITH ADJUSTABLE CLOSING FORCE
DE2535244C3 (en) 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg Universal door closer
EP0328917B1 (en) 1988-02-13 1990-11-28 Gretsch Unitas GmbH Baubeschläge Door closer
DE19513433A1 (en) 1995-04-08 1996-10-10 Geze Gmbh & Co Door closer for preferably revolving door, with energy accumulator
DE19524777B4 (en) 1995-07-07 2004-04-15 Geze Gmbh Door closer with adjustable preload of a closer spring
CA2320662C (en) 1999-10-15 2007-03-13 Schlage Lock Company Power adjustment size indicator for a door closer
DE102010030914A1 (en) 2010-07-05 2012-01-05 Geze Gmbh Drive for use in closure in leaf of door or window, has pin arranged at periphery of spring plate and displaced into receiving bore for intervention into groove of housing, and spring plate adjusted along setting spindle
DE102010017787A1 (en) 2010-07-07 2012-01-12 Dorma Gmbh + Co. Kg Door closer or door drive

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9203870U1 (en) * 1992-03-23 1992-09-10 Schmid, Paul, Rothrist Door closer with force connection between spring tension plate and spring
GB0124376D0 (en) * 2001-10-11 2001-11-28 Jebron Ltd Door Closer
DE102004061629A1 (en) * 2004-12-17 2006-07-06 Dorma Gmbh + Co. Kg Swing door drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535244C3 (en) 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg Universal door closer
DE3224300A1 (en) 1982-06-29 1983-12-29 Geze Gmbh DOOR CLOSER WITH ADJUSTABLE CLOSING FORCE
EP0328917B1 (en) 1988-02-13 1990-11-28 Gretsch Unitas GmbH Baubeschläge Door closer
DE19513433A1 (en) 1995-04-08 1996-10-10 Geze Gmbh & Co Door closer for preferably revolving door, with energy accumulator
DE19524777B4 (en) 1995-07-07 2004-04-15 Geze Gmbh Door closer with adjustable preload of a closer spring
CA2320662C (en) 1999-10-15 2007-03-13 Schlage Lock Company Power adjustment size indicator for a door closer
DE102010030914A1 (en) 2010-07-05 2012-01-05 Geze Gmbh Drive for use in closure in leaf of door or window, has pin arranged at periphery of spring plate and displaced into receiving bore for intervention into groove of housing, and spring plate adjusted along setting spindle
DE102010017787A1 (en) 2010-07-07 2012-01-12 Dorma Gmbh + Co. Kg Door closer or door drive

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