EP0212484B2 - Door closer - Google Patents

Door closer Download PDF

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Publication number
EP0212484B2
EP0212484B2 EP86110959A EP86110959A EP0212484B2 EP 0212484 B2 EP0212484 B2 EP 0212484B2 EP 86110959 A EP86110959 A EP 86110959A EP 86110959 A EP86110959 A EP 86110959A EP 0212484 B2 EP0212484 B2 EP 0212484B2
Authority
EP
European Patent Office
Prior art keywords
slide
door closer
housing
guide
closer according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86110959A
Other languages
German (de)
French (fr)
Other versions
EP0212484A3 (en
EP0212484B1 (en
EP0212484A2 (en
Inventor
Julius Maus Von Resch
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
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Application filed by Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Priority to AT86110959T priority Critical patent/ATE40438T1/en
Publication of EP0212484A2 publication Critical patent/EP0212484A2/en
Publication of EP0212484A3 publication Critical patent/EP0212484A3/en
Application granted granted Critical
Publication of EP0212484B1 publication Critical patent/EP0212484B1/en
Publication of EP0212484B2 publication Critical patent/EP0212484B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/225—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor
    • 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
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/50—Mounting methods; Positioning
    • E05Y2600/56—Positioning, e.g. re-positioning, or pre-mounting
    • E05Y2600/58—Positioning, e.g. re-positioning, or pre-mounting by using indicators or markings, e.g. scales
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/10—Additional functions
    • E05Y2800/12—Sealing
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form or shape
    • E05Y2800/28—Form or shape tubular, annular
    • 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the invention relates to a door closer, the closer shaft of which carries a cam which interacts with a slide guided on the closer shaft, the slide being connected via a connecting rod to a damping piston, with a return spring supported on the damping piston on the one hand and on a door closer housing on the other hand , wherein the slide is additionally guided on the housing via a guide and the two sliding guides of the slide are arranged offset in the sliding direction.
  • two parallel sliding surfaces are provided, between which the slide is guided.
  • the sliding surfaces are formed by two leaflets, which are each attached to the inner side walls of the housing. The carriage is guided longitudinally between the left and right housing walls.
  • an automatic door closer particularly to be used as a floor door closer, has become known, for example, from DE-OS 29 24 311.
  • the damping piston In addition to the damping piston, it naturally has a corresponding hydraulic system and it is also filled with a hydraulic fluid. This is not important in connection with the present invention, which is why this part of the door closer is not described in detail. It can be designed in the same or similar manner as in the named DE-OS. It is only essential that by rotating the door connected to the closer shaft, the cam disc, which is held on the closer shaft in a rotationally fixed manner, displaces the slide in a direction running perpendicular to the closer shaft.
  • the slide is guided on the closer shaft, i.e. the closer shaft passes through two mutually parallel guide slots of the slide, which extend in the longitudinal direction of the connecting rod.
  • the damping piston provides additional support for the movable parts that are coupled to one another. Since the return spring concentrically surrounds the connecting rod in this generic door closer - it is designed as a helical compression spring - the connecting rod between the slide and damping piston does not have to transmit tensile forces, but also bending forces. These are initiated via the cam disc.
  • the connecting rod In order to be able to absorb this combined action of force, the connecting rod must be adequately dimensioned, in particular transversely to its longitudinal axis, i.e. in the direction of the cam disc plane, i.e. run very wide. As a result, the interior of the housing is largely filled in this area by the connecting rod and the return spring, so that there is no space for additional elements.
  • this door closer is criticized for the fact that the force of the spring and thus the closing force of this door closer cannot be adjusted.
  • due to the limited space it is not possible to install a device for changing the closing force.
  • the object of the invention is to develop a door closer of the type mentioned in such a way that a good additional guidance for the slide is created with little structural effort.
  • the return spring is connected between the damping piston and the slide and the additional guidance by a guide shoe, carriage or the like and a guide bar, plate or the like.
  • the guide bar or the like overlaps the guide bar or the like and the guide bar or the like is located detachably on the underside of the slide and the guide bar or the like on the housing or vice versa.
  • the additional guide from a guide bar, plate or the like is attached to the bottom of the housing and a guide rail, carriage or the like is attached to the slide.
  • the reverse arrangement is also conceivable, i.e. the attachment of the guide rail or the like. on the slide, which then works together with a stationary guide bush on the housing.
  • the length of the guide shoe on the housing works together.
  • the length of the guide rail or the like depends on the length of the guide shoe on the one hand and the maximum sliding distance of the connecting rod and all parts connected to it so that they cannot move.
  • a development of the invention is that the guide bar or the like. Made of wear-resistant material and plugged into the housing. The constriction of wear-resistant material ensures a long service life of the guide rail and its removable attachment ensures a quick exchange if necessary.
  • the guide shoe or the like will also wear out firmly executed. In a preferred embodiment of the invention, it is formed by the underside of the slide, which faces away from the free closer shaft end, and two protruding projections arranged thereon at a distance from the guide bar width. In the position of use, the guide shoe or the like overlaps the guide bar or the like from above in the case of a floor door closer.
  • each rivet has an extension attachment and the two Extension lugs or the like on the longitudinal edges of the guide rail. issue. In this respect, no additional elements and no additional manufacturing effort are required to create this guide shoe.
  • the equivalent of using two rivets are two screws with a head, with the heads then forming the extension lugs. Otherwise, the attachment of further rivets is not excluded.
  • Another variant of the invention is characterized in that the slide-side end of the return spring is supported by a support member in the area of the slide on the housing, the support member to change its effective length, seen in the longitudinal direction of the spring, consists of two adjustably and fixably connected parts . If the effective length of the support member is increased, the spring tension increases. This adjustment option to change the effective length is certainly the best solution. However, you should make sure that the adjustment can be carried out from the outside or after removing a cover. Because of the high force of the return spring, you have to choose an adjustment option that does not require excessive force in the case of the normally provided manual adjustment.
  • the first support member section is rotatably mounted on the connecting rod and supported on a housing transverse wall and has a tubular, externally threaded attachment, and that the second support member section, on which the one Supported spring end, can be screwed to the thread approach. If one holds on to the adjustment of one of these two sections to be screwed together and rotates the other, then rotation in one direction of rotation increases the effective length of the support member, while screwing or rotating in the opposite direction leads to a reduction in the effective length of the support member .
  • the second support member section has an internal thread.
  • a particularly preferred embodiment of the invention is characterized in that the first support member section is designed as a worm wheel and interacts with a worm mounted in the housing, the worm axis of rotation being drivable, in particular rotatable by hand.
  • the latter of course means that the snail ax is made accessible or is accessible accordingly.
  • a worm gear By means of a worm gear, a high gear ratio can be created, so that the strong return spring can be tensioned with relatively little manual effort.
  • the free end of the screw axis of rotation is provided with a receptacle for a turning tool, for example has a screwdriver slot or a hexagon socket. With the help of a screwdriver or known hexagon wrench, the adjustment can be made quickly and safely.
  • a further embodiment of the invention provides that the axis of rotation of the screw runs parallel to the closer shaft and its free end extends in the same direction as the free end of the closer shaft which can be connected to the door.
  • the axis of rotation of the screw projects from the bottom upwards, as is the case with the closer shaft.
  • the second support member section is mounted in the housing in a manner fixed against relative rotation, but displaceable parallel to itself.
  • the first support member section is always pressed against a corresponding housing wall or the like by the force of the compression spring. If it then rotates with the aid of the drive worm, this leads to a distance of the second supporting slide section from this supporting surface or to an approach in the opposite direction of rotation. In the former case the spring is shortened and thus tensioned, while in the broad case the spring force is reduced.
  • the second support member section engages with a sliding block-like first projection in a housing groove extending parallel to the connecting rod.
  • this housing groove is preferably located on the inside of the housing base and can be molded there.
  • a further preferred variant of the invention is characterized by a second, radially projecting extension of the second supporting member section forming an indicating member, which is assigned to a viewing window. From the position of this second attachment on the window, the degree of spring preload can be seen from the outside or the adjustment can be made while observing the tightening attachment.
  • the second approach of the second support member section expediently extends in the same direction like the free end of the closer shaft. This makes it particularly easy to observe this setting for the spring tension.
  • the viewing window is located on this.
  • the viewing window or the like with an adjustment scale is provided, which enables a particularly precise setting and, in conjunction with a corresponding scale label, excludes errors in the setting.
  • the viewing window is preferably made of acrylic glass or another suitable transparent or at least well-translucent plastic.
  • the exemplary embodiment is a floor door closer, the housing 1 of which is inserted into a corresponding floor opening, so that its closer shaft 2 extends from the bottom to the top.
  • the cover 3 placed on the housing 1 generally runs flush with the bottom surface.
  • the housing 1 is not immediately embedded in the floor, rather it is inserted into an outer housing 4 mounted during the construction of the shell.
  • the free end of the closer shaft which projects beyond the cover 3 is connected to the door to be closed in a rotationally fixed manner. If the latter is opened, the closer shaft 2 rotates, for example in the direction of arrow 5.
  • a cam 6 is connected in a rotationally fixed manner to the closer shaft 2. It is formed symmetrically to the longitudinal center axis 7 of the door closer in the starting position, but this does not necessarily have to be the case. However, the symmetrical shape allows it to be used for left or right opening doors and for swing doors.
  • the design of the cam flanks or the cam circumference is preferably chosen so that the restoring force increases with an increasing angle of rotation of the door up to a 90 ° position. Larger opening angles are relatively rare. However, if a larger opening of the door is possible or desired, the restoring force does not change significantly at an opening angle of more than 90 °.
  • cam disc has a symmetrically arranged recess 8, into which a locking member 9 of a slide 10, which is designed as a rotatable roller, engages when the door is closed.
  • the carriage 10 is fixedly connected to the one end 11 of a connecting rod 12 shown in the drawing.
  • the other, not shown in the drawing, the right end of the connecting rod 12 is connected in a known manner to a hydraulic piston which is slidably mounted in a hydraulic cylinder or a cylindrical bore of the housing 1.
  • the plates 13 and 14 are each provided with a slot 20 and 21 which extends in the longitudinal direction of the connecting rod 12 and is arranged symmetrically to the longitudinal central axis 7.
  • the slot width corresponds to the diameter of the part 22 and 23 of the closer shaft 2 passing through this slot.
  • These closer shaft parts and the slots 20, 21 form a first guide for the carriage 10 in the direction of the double arrow 22, i.e. the direction of displacement of the slide, connecting rod 12 and damping piston.
  • the carriage is in its right-hand sliding end length. This is achieved with the aid of a return spring 23, the not shown right spring end of which is supported on the damping piston and which will be discussed in more detail below.
  • an additional guide 24 is provided according to the present invention. It consists of a guide bar 25 or a small guide plate and a guide shoe 27 which overlaps it in the position of use from above, that is to say in the direction of the arrow 26. This is in turn guided by the underside 28 of the slide 10 or lower plate 14 and two projections 29 and 30 protruding from the underside.
  • these were the thickened ends of the two connecting bolts 15 and 16.
  • the lateral distance between the two lugs 29 and 30 corresponds to the width of the guide line 25, measured transversely to the direction of movement 22. At least the centers of the two guides are offset from one another in the direction of displacement.
  • the guide bar 25 is made of particularly wear-resistant material. This is also the reason why they are not molded onto the base 31 of the housing 1, but are manufactured separately and are held in place with the aid of two bolts 32 and 33 held in the base 31, which engage in corresponding bores in the guide strip 25. In the event of wear, this also enables replacement later.
  • Fig. 3 shows that the height of the lugs 29 and 30 corresponds approximately to the thickness of the guide bar 25 and that the lugs only rest with the required play on the longitudinal edges 34 and 35 of the guide bar 25, along which they are moved when the door is opened or closed.
  • the slide-side end 36 of the return spring 23 is supported by a support member 37 in the area of the slide 10 on the housing 1, more precisely on a housing transverse wall 38, which according to FIG. 1 has an upwardly open vertical slot for the passage of the connecting rod 12 .
  • the effective length of the support member 37 can be changed in the longitudinal direction of the spring, that is to say in the direction of the longitudinal central axis 7, in that it consists of two sections 39 and 40 which can be adjusted and locked in relation to one another in the direction 22 mentioned.
  • the first support member section 39 is rotatably mounted on the associated end of the connecting rod 12. In addition, it is supported directly on a correspondingly machined surface 41 of the housing transverse wall 38. It has a tubular extension 42 and is provided with an external thread 43. Otherwise, it is designed as a worm wheel.
  • the second section 40 of the support member 37 accordingly has an internal thread 44 so that it can be screwed relative to the first section. It is non-rotatable, but is displaceably mounted in the housing 1 in the sense of the double arrow 22. The twisting of the second section 40 is prevented by a radially protruding first extension 45 which engages in a housing groove 46 on the housing base 31 which extends parallel to the connecting rod 12.
  • rotating the first section 39 of the support member 37 causes a displacement of the second section 40, for example in the direction of the arrow 47, while counter-rotation of the first section 39 results in a reverse displacement of the second section.
  • the effective length of the support slide 37 is shortened, while in the former case, that is to say when the second section 40 is displaced in the direction of the arrow 47, the effective length is increased and the spring tension of the return spring 23 is thereby increased.
  • Rotation of the first section 39 of the support member 37 is achieved via a worm 48 rotatably mounted in the housing 1, which runs parallel to the closer shaft 2 and whose free end points in the same direction as the free, according to FIG. 1, the cover 3 protruding end of the closer shaft 2.
  • a corresponding receptacle for a turning tool for example a slot or hexagon socket for inserting a screwdriver or hexagon wrench, is located at its free end of the rotary axis.
  • the second support member section 40 is provided with a second, radially projecting extension 50, which is assigned to a viewing window 51.
  • the latter is located on the top of the housing or in the cover 3. This allows the tension of the return spring 23 to be set in a favorable manner from above and, at the same time, to monitor or precisely define it. The latter is possible in particular if the viewing window is provided with a corresponding scale.
  • the closer shaft 2 is supported by two ball bearings 52 and 53. To the outside there is a seal by means of an O-ring 54. Since it is a hydraulic door closer, the housing is filled with hydraulic fluid and it is located in the area of the piston and its cylinder corresponding valves, the training in this area can be of known design, which is why it is not explained here.

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

Abstract

1. Door closer, the closer shaft (2) of which carries a cam plate (6) which cooperates with a slide (10) guided on the closer shaft (2) (slot 20), the slide being connected to a damping piston through a connecting rod (12), there being between the damping piston and the slide a return spring (23) biased at one end on the damping piston and at the other on a door closer housing (1), characterised in that the slide (10) is additionally guided on the housing (1) (guide 24), the two slide guides (20, 21 and 24) of the slide being offset in the sliding direction (22).

Description

Die Erfindung bezieht sich auf einen Türschließer, dessen Schließerwelle eine Nockenscheibe trägt, die mit einem an der Schließerwelle geführten Schlitten zusammenwirkt, wobei der Schlitten über eine Verbindungsstange mit einem Dämpfungskolben verbunden ist, mit einer am Dämpfungskolben einerseits sowie an einem Türschließer-Gehäuse andererseits abgestützten Rückstellfeder, wobei außerdem der Schlitten zusätzlich am Gehäuse über eine Führung geführt ist und die beiden Schiebeführungen des Schlittens in Schieberichtung versetzt angeordnet sind.The invention relates to a door closer, the closer shaft of which carries a cam which interacts with a slide guided on the closer shaft, the slide being connected via a connecting rod to a damping piston, with a return spring supported on the damping piston on the one hand and on a door closer housing on the other hand , wherein the slide is additionally guided on the housing via a guide and the two sliding guides of the slide are arranged offset in the sliding direction.

Ein derartiger Türschließer ist unter der Bezeichnung "Geze Pendulo C mit Dämpfung" bekanntgeworden.Such a door closer has become known under the name "Geze Pendulo C with damping".

Bei dem bekannten Türschließer sind zwei parallele Gleitflächen vorgesehen, zwischen denen der Schlitten geführt ist. Die Gleitflächen werden von zwei Blättchen gebildet, die jeweils an den Seiteninnenwandungen des Gehäuses angebracht sind. Eine Längsführung des Schlittens erfolgt zwischen der linken und der rechten Gehäusewand.In the known door closer, two parallel sliding surfaces are provided, between which the slide is guided. The sliding surfaces are formed by two leaflets, which are each attached to the inner side walls of the housing. The carriage is guided longitudinally between the left and right housing walls.

Weiterhin ist ein selbsttätiger, insbesondere als Bodentürschließerzu verwendender Türschließer beispielweise durch die DE-OS 29 24 311 bekanntgeworden. Außer dem Dämpfungskolben verfügt er selbstverständlich über ein entsprechendes hydraulisches System und er ist auch mit einer hydraulischen Flüssigkeit gefüllt. Hierauf kommt es aber im Zusammenhang mit der vorliegenden Erfindung im Einzelnen nicht an, weswegen dieser Teil des Türschließers nicht näher beschrieben ist. Er kann in gleicher oder ähnlicher Weise ausgebildet sein wie bei der gennanten DE-OS. Wesentlich ist nur, daß durch Drehen der mit der Schließerwelle verbundenen Tür die auf der Schließerwelle drehfest gehaltene Nockenscheibe den Schlitten in einer senkrecht zur Schließerwelle verlaufenden Richtung verschiebt. Diese Verschiebebewegung erfolgt gegen den Widerstand der Rückstellfeder und unter Mitnahme des in einem entsprechenden Zylinderansatz des Türschließers verschiebbaren Kolbens. Dabei wird die hydraulische Flüssigkeit von einem vor dem Kolben liegenden Zylinderraum in einen dahinter befindlichen gedrückt. Beim Rücklaufen des Kolbens und damit der Rückführung der Tür in ihre Schließlage wird die hydraulische Flüssigkeit in umgekehrter Weise, jedoch entsprechend gedrosselt, zurückgeleitet.Furthermore, an automatic door closer, particularly to be used as a floor door closer, has become known, for example, from DE-OS 29 24 311. In addition to the damping piston, it naturally has a corresponding hydraulic system and it is also filled with a hydraulic fluid. This is not important in connection with the present invention, which is why this part of the door closer is not described in detail. It can be designed in the same or similar manner as in the named DE-OS. It is only essential that by rotating the door connected to the closer shaft, the cam disc, which is held on the closer shaft in a rotationally fixed manner, displaces the slide in a direction running perpendicular to the closer shaft. This displacement movement takes place against the resistance of the return spring and with the entrainment of the piston which can be displaced in a corresponding cylinder extension of the door closer. The hydraulic fluid is pressed from a cylinder chamber in front of the piston into a cylinder chamber behind it. When the piston returns and thus the door is returned to its closed position, the hydraulic fluid is returned in a reverse manner, but throttled accordingly.

Beim vorbekannten Türschließer ist der Schlitten an der Schließerwelle geführt, d.h. die Schließerwelle durchsetzt zwei zueinander parallele, sich in Längsrichtung der Verbindungsstange erstreckende Führungsschlitze des Schlittens. Eine zusätzliche Abstützung der miteinander gekuppelten verschiebbaren Teile erfolgt über den Dämpfungskolben. Da die Rückstellfeder bei diesem gattungsgemäßen Türschließer die Verbindungsstange konzentrisch umgibt -sie ist als Schraubendruckfeder ausgebildet-, muß die Verbindungsstange zwischen Schlitten und Dämpfungskolben nicht zur Zugkräfte, sondern zusätzlich auch Biegekräfte übertragen. Diese werden über die Nockenscheibe eingeleitet.In the known door closer, the slide is guided on the closer shaft, i.e. the closer shaft passes through two mutually parallel guide slots of the slide, which extend in the longitudinal direction of the connecting rod. The damping piston provides additional support for the movable parts that are coupled to one another. Since the return spring concentrically surrounds the connecting rod in this generic door closer - it is designed as a helical compression spring - the connecting rod between the slide and damping piston does not have to transmit tensile forces, but also bending forces. These are initiated via the cam disc.

Um diese kombinierte Krafteinwirkung aufnehmen zu können, muß man die Verbindungsstange insbesondere quer zu ihrer Längsachse, also in Richtung de Nockenscheibenebene, ausreichend dimensionieren, d.h. sehr breit ausführen. Dadurch wird der Gehäuseinnenraum durch die Verbindungsstange und die Rückstellfeder in diesem Bereich weitgehend ausgefüllt, so daß kein Platz für zusätzliche Elemente zur Verfügung steht.In order to be able to absorb this combined action of force, the connecting rod must be adequately dimensioned, in particular transversely to its longitudinal axis, i.e. in the direction of the cam disc plane, i.e. run very wide. As a result, the interior of the housing is largely filled in this area by the connecting rod and the return spring, so that there is no space for additional elements.

Des weiteren wird bei diesem Türschließer bemängelt, daß die Kraft der Feder und damit die Schließkraft dieses Türschließers nicht einstellbar ist. Aufgrund der beengten Platzverhältnisse ist aber der Einbau einer Einrichtung zur Veränderung der Schließkraft nicht möglich.Furthermore, this door closer is criticized for the fact that the force of the spring and thus the closing force of this door closer cannot be adjusted. However, due to the limited space, it is not possible to install a device for changing the closing force.

Die Aufgabe der Erfindung besteht darin, einen Türchließer der eingangs gennanten Art so weiterzubilden, daß mit geringem baulichen Aufwand eine gute zusätzliche Führung für den Schlitten geschaffen wird.The object of the invention is to develop a door closer of the type mentioned in such a way that a good additional guidance for the slide is created with little structural effort.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß bei einem Türschließer der im Oberbegriff des Anspruchs 1 beschriebenen Art die Rückstellfeder zwischen den Dämpfungskolben und den Schlitten geschaltet ist und die zusätzliche Führung durch einen Führungsschuh, -wagen od. dgl. und eine Führungsleiste, -platte od. dgl. gebildet ist, wobei der Führungsschuch od. dgl. die Führungsleiste od. gl. übergreift und sich der Führungsschuch od. dgl. an der Unterseite des Schlittens und die Führungsleiste od. dgl. abnehmbar am Gehäuse befinden oder umgekehrt.To achieve this object, it is proposed according to the invention that in a door closer of the type described in the preamble of claim 1, the return spring is connected between the damping piston and the slide and the additional guidance by a guide shoe, carriage or the like and a guide bar, plate or the like. The guide bar or the like overlaps the guide bar or the like and the guide bar or the like is located detachably on the underside of the slide and the guide bar or the like on the housing or vice versa.

Die zusätliche Fürhung aus einer Führungsleiste, -platte od. dgl. ist am Boden des Gehäuse angebracht und ein Führungsschuch, -wagen od. dgl. ist am Schlitten befestigt. Denkbar ist auch die umgekehrte Anordnung, d.h. die Anbringung der Führungsleiste od.dgl. am Schlitten, die dann mit einem ortsfesten Führungsschuch am Gehäuse zusammenarbeitet. Die Länge der Führungsschuh am Gehäuse zusammenarbeitet. Die Länge der Führungsleiste od.dgl. richtet sich nach die Länge des Führungsschuhs einerseits und der maximalen Verschiebestreckte der Verbindungsstange sowie aller damit verschiebefest verbundenen Teile.The additional guide from a guide bar, plate or the like is attached to the bottom of the housing and a guide rail, carriage or the like is attached to the slide. The reverse arrangement is also conceivable, i.e. the attachment of the guide rail or the like. on the slide, which then works together with a stationary guide bush on the housing. The length of the guide shoe on the housing works together. The length of the guide rail or the like. depends on the length of the guide shoe on the one hand and the maximum sliding distance of the connecting rod and all parts connected to it so that they cannot move.

Eine Weiterbildung der Erfindung besteht darin, daß die Führungssleiste od.dgl. aus verschleißfestem Material gefertigt und steckbar am Gehäuse befestigt ist. Durch die Verwengung verschleißfesten Materials errecht man eine lange Lebensdauer der Führungsleiste und ihre abnehmbare Befestigung gewährleistet gegebenenfalls einen raschen Austausch. Selbstverständlich wird auch der Führungsschuh od. dgl. verschleißfest ausgeführt. Er ist bei einer bevorzugten Ausführungsform der Erfindung durch die vom freien Schließerwellenende abgewandte Schlittenunterseite und zwei an dieser im Abstand der Führungsleistenbreite angeordnete, überstehende Ansätze gebildet. In Gebrauchslage übergreift der Führungsschuh od. dgl. bei einem Boden-Türschließer die Führungsleiste od. dgl. von oben her.A development of the invention is that the guide bar or the like. Made of wear-resistant material and plugged into the housing. The constriction of wear-resistant material ensures a long service life of the guide rail and its removable attachment ensures a quick exchange if necessary. Of course, the guide shoe or the like will also wear out firmly executed. In a preferred embodiment of the invention, it is formed by the underside of the slide, which faces away from the free closer shaft end, and two protruding projections arranged thereon at a distance from the guide bar width. In the position of use, the guide shoe or the like overlaps the guide bar or the like from above in the case of a floor door closer.

Bei einem Türchließer mit einem aus zwei, die Nockenscheibe und eines der Verbindungsstangenenden zwischen sich aufnehmenden Platten gebildeten Schlitten, wobei die Platten und das Stangenende mittels zweier Niete miteinander verbunden sind, besteht eine Weiterbildung der Erfindung darin, daß jeder Niet einen Verlängerungsantatz besitzt und die beiden Verlängerungsansätze an den Längskanten der Führungsleiste od.dgl. anliegen. Insofern sind für die Schaffung dieses Führungsschuhs keine zusätzlichen Elemente und auch kein zusätzlicher Herstellungsaufwand erforderlich. Gleichwertig mit der Verwendung zweier Niete sind selbstverständlich zwei Schrauben mit Kopf, wobei dann die Köpfe die Verlängerungsansätze bilden. Im übrigen ist die Anbringung weiterer Niete hierdurch nicht ausgeschlossen.In a door closer with a carriage formed from two plates, the cam disk and one of the connecting rod ends between the receiving plates, the plates and the rod end being connected to one another by means of two rivets, a development of the invention consists in the fact that each rivet has an extension attachment and the two Extension lugs or the like on the longitudinal edges of the guide rail. issue. In this respect, no additional elements and no additional manufacturing effort are required to create this guide shoe. Of course, the equivalent of using two rivets are two screws with a head, with the heads then forming the extension lugs. Otherwise, the attachment of further rivets is not excluded.

Eine weitere Variante der Erfindung kennzeichnet sich dadurch, daß das schlittenseitige Ende der Rückstellfeder über ein Stützglied im Bereich des Schlittens am Gehäuse abgestützt ist, wobei das Stützglied zur Veränderung seiner wirksamen Länge, in Federlängsrichtung gesehen, aus zwei verstell- und feststellbar miteinander verbundenen Teilstücken besteht. Wird die wirksame Länge des Stützglieds vergrößert, so erhöht sich die Federspannung. Diese Verstellmöglichkeit zur Veränderung der wirksamen Länge ist sicherlich die beste Lösung. Hierbei sollte man allerdings darauf achten, daß die Verstellung möglichst von außen her oder nach Abnahme einer Abdeckung durchgeführt werden kann. Wegen der hohen Kraft der Rückstellfeder muß man eine Verstellmöglichkeit wählen, die im Falle der normalerweise vorgesehenen Handverstellung keinen übergroßen Kraftaufwand erfordert.Another variant of the invention is characterized in that the slide-side end of the return spring is supported by a support member in the area of the slide on the housing, the support member to change its effective length, seen in the longitudinal direction of the spring, consists of two adjustably and fixably connected parts . If the effective length of the support member is increased, the spring tension increases. This adjustment option to change the effective length is certainly the best solution. However, you should make sure that the adjustment can be carried out from the outside or after removing a cover. Because of the high force of the return spring, you have to choose an adjustment option that does not require excessive force in the case of the normally provided manual adjustment.

In n weiterer Ausgestaltu ng der erfindung wird vorgeschlagen, daß das erste Stützglied-Teilstück auf der Verbindungsstange drehbar gelagert und an einer Gehäusequerwand abgestützt ist sowie einen rohrförmigen, mit Außengewinde versehenen Ansatz aufweist, und daß das zweite Stützglied-Teilstück, an welchem sich das eine Federende abstützt, mit dem Gewinde-Ansatz verschraubbar ist. Wenn man zum Verstellen eines dieser beiden miteinander zu verschraubenden Teilstücke festhält und das andere dreht, so ergibt eine Drehung im einen Drehsinne eine Vergrößerung der wirksamen Länge des Stützglieds, während das Verschrauben bzw. Drehen in der Gegenrichtung zu einer Verkürzung der wirksamen Länge des Stützglieds führt. Selbstverständlich besitzt das zweite Stützglied-Teilstück ein Innengewinde.In another embodiment of the invention, it is proposed that the first support member section is rotatably mounted on the connecting rod and supported on a housing transverse wall and has a tubular, externally threaded attachment, and that the second support member section, on which the one Supported spring end, can be screwed to the thread approach. If one holds on to the adjustment of one of these two sections to be screwed together and rotates the other, then rotation in one direction of rotation increases the effective length of the support member, while screwing or rotating in the opposite direction leads to a reduction in the effective length of the support member . Of course, the second support member section has an internal thread.

Eine besonders bevorzugte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß das erste Stützglied-Teilstück als Scheckenrad ausgebildet ist und mit einer im Gehäuse gelagerten Schnecke zusammenwirkt, wobei die Schneckendrehachse antreibbar, insbesondere von Hand drehbar ist. Letzteres bedeutet natürlich, daß die Schnecknachse entsprechend zugänglich gemacht wird oder auch ist. Mittels eines Schnekkengetriebes läßt sich eine hohe Übersetzung schaffen, so daß mit verhältnismäßig geringer Handkraft die starke Rückstellfeder problemlos gespannt werden kann. Dabei ist es besonders vorteilhaft, daß das freie Ende der Schnecken-Drehachse mit einer Aufnahme für ein Drehwerkzeug versehen ist, beispielsweise einen Schraubendreherschlitz oder einen Innensechskant aufweist. Mit Hilfe eines Schraubendrehers oder bekannten Sechskantshlüssels kann man die Verstellung rasch und sicher vornehmen.A particularly preferred embodiment of the invention is characterized in that the first support member section is designed as a worm wheel and interacts with a worm mounted in the housing, the worm axis of rotation being drivable, in particular rotatable by hand. The latter of course means that the snail ax is made accessible or is accessible accordingly. By means of a worm gear, a high gear ratio can be created, so that the strong return spring can be tensioned with relatively little manual effort. It is particularly advantageous that the free end of the screw axis of rotation is provided with a receptacle for a turning tool, for example has a screwdriver slot or a hexagon socket. With the help of a screwdriver or known hexagon wrench, the adjustment can be made quickly and safely.

Eine weitere Ausbildung der erfindung sieht vor, daß die Drehachse der Schnecke parallel zur Schließerwelle verläuft und sich ihr freies Ende in gleicher Richtung wie das freie, mit der Tür verbindbare Ende der Schließerwelle erstreckt. Im Falle eines Boden-Türschließers ragt also die Drehachse der Schnecke von unten nach oben, wie dies auch bei der Schließerwelle der Fall ist.A further embodiment of the invention provides that the axis of rotation of the screw runs parallel to the closer shaft and its free end extends in the same direction as the free end of the closer shaft which can be connected to the door. In the case of a floor door closer, the axis of rotation of the screw projects from the bottom upwards, as is the case with the closer shaft.

Wie bereits erläutert, muß beim Verschrauben des einen Stützglied-Teilstücks gegen das andere eines festgehalten werden, um die wirksame Länge zu verändern. Man erreicht dies in besonders zweckmäßiger weise dadurch, daß das zweite Stützglied-Teilstück drehfest, aber parallel zu sich verschiebbar, im Gehäuse gelagert ist. Das erste Stützglied-Teilstückwird durch die Kraft der Druckfeder stets gegen eine entsprechende Gehäusewand od. dgl. gedrückt. Wenn dann es mit Hilfe der Antriebsschnecke dreht, so führt dies zu einer Entfernung des zweiten Stützgleid-Teilstücks von dieser Stützfläche bzw. in Gegendrehrichtung zu einer Annäherung. Im ersteren Falle wird die Feder verkürzt und damit gespannt, während im weiten Falle eine Reduzierung der Federkraft erreicht wird.As already explained, when screwing the one support member section against the other one must be held in order to change the effective length. This is achieved in a particularly expedient manner in that the second support member section is mounted in the housing in a manner fixed against relative rotation, but displaceable parallel to itself. The first support member section is always pressed against a corresponding housing wall or the like by the force of the compression spring. If it then rotates with the aid of the drive worm, this leads to a distance of the second supporting slide section from this supporting surface or to an approach in the opposite direction of rotation. In the former case the spring is shortened and thus tensioned, while in the broad case the spring force is reduced.

Das zweite Stützglied-Teilstück greift bei einer anderen Ausführungsform der Erfindung mit einem gleitsteinartigen ersten Ansatz in eine sich parallel zur Verbindungsstange erstreckende Gehäusenut ein. Bei einem Boden-Türschließer befindet sich diese Gehäusenut vorzugsweise innen am Gehäuseboden und die kann dort angeformt sein. Eine weitere bevorzugt Variante der Erfindung ist durch einen zweiten, radial vorstehenden, ein Anzeideglied bildenden Ansatz des zweiten Stützglied-Teilstücks gekennzeichnet, der einem Sichtfenster zugeordnet ist. Aus der Stellung dieses zweiten Ansatzes am Fenster kann man von außen her den Grad der Federvorspannung erkennen bzw. die Einstellung unter Bobachtung des Anziege-Ansatzes vornehmen.In another embodiment of the invention, the second support member section engages with a sliding block-like first projection in a housing groove extending parallel to the connecting rod. In the case of a floor door closer, this housing groove is preferably located on the inside of the housing base and can be molded there. A further preferred variant of the invention is characterized by a second, radially projecting extension of the second supporting member section forming an indicating member, which is assigned to a viewing window. From the position of this second attachment on the window, the degree of spring preload can be seen from the outside or the adjustment can be made while observing the tightening attachment.

Der zweite Ansatz des zweiten Stützglieds-Teilstücks erstreckt sich zweckmäßigerweise in gleicher Richtung wie das freie Ende der Schließerwelle. Dadurch ist diese Einstellung für die Federspannung besonders leicht zu beobachten. Im Falle eines Gehäusedeckels befindet sich das Sichtfenster an diesem. Über dem Gehäusedeckel befindet sich bei einem Bodentürschließervorzugsweise noch eine Abdeckplatte, welche alle Einstellorgane überdeckt.The second approach of the second support member section expediently extends in the same direction like the free end of the closer shaft. This makes it particularly easy to observe this setting for the spring tension. In the case of a housing cover, the viewing window is located on this. In the case of a floor door closer, there is preferably also a cover plate above the housing cover, which covers all the adjustment members.

Schließlich ist es noch besonders vorteilhaft, daß das Sichtfenster mit einer Einstellskala od.dgl. versehen ist, die ein besonders genaues Einstellen ermöglicht und in Verbindung mit einer entsprechenden Skalenbeschriftung Irrtümer bei der Einstellung ausschließt. Das Sichtfenster besteht vorzugsweise aus Acrylglas oder einem anderen geeigneten durchsichtigen oder zumindest gut durchscheinenden Kunststoff.Finally, it is particularly advantageous that the viewing window or the like with an adjustment scale. is provided, which enables a particularly precise setting and, in conjunction with a corresponding scale label, excludes errors in the setting. The viewing window is preferably made of acrylic glass or another suitable transparent or at least well-translucent plastic.

Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. Hierbei stellen dar:

  • Fig. 1 eine abgebrochene Darstellung eines Längsschnitts durch einen Boden-Türschließer entlang der Linie I-I der Fig. 2,
  • Fig. 2 einen Schnitt gemäß der Linie 11-11 der Fig. 1 -ebenfalls abgebrochen-,
  • Fig. 3 einen Schnitt entlang der Linie 111-111 der Fig. 2.
The invention is explained below with reference to the drawing. The drawing shows an embodiment of the invention. Here represent:
  • 1 is a broken view of a longitudinal section through a floor closer along the line II of FIG. 2,
  • 2 shows a section along the line 11-11 of FIG. 1 - also broken off -,
  • 3 shows a section along the line 111-111 of FIG. 2nd

Beim Ausführungsbeispiel handelt es sich um einen Boden-Türschließer, dessen Gehäuse 1 in eine entsprechende Bodenöffnung eingesetzt wird, so daß sich seine Schließerwelle 2 von unten nach oben erstreckt. Dabei verläuft in der Regel der auf das Gehäuse 1 aufgesetzte Deckel 3 bündig mit der Bodenoberfläche. Aus verschiedenen Gründen, insbesondere aber um den Türschließer während der Bauzeit von Beschädigungen zu schützen, wird das Gehäuse 1 nicht unmitellbar in den Boden eingelassen, vielmehr setzt man es in ein bei der Erstellung des Rohbaus montiertes Außengehäuse 4 ein. Das nach außen über den Deckel 3 überstehende freie Ende der Schließerwelle wird drehfest mit der zu schließenden Tür verbunden. Wird letztere geöffnet, so führt dies zu einem Drehen der Schließerwelle 2, beispielsweise im Sinne des Pfeils 5.The exemplary embodiment is a floor door closer, the housing 1 of which is inserted into a corresponding floor opening, so that its closer shaft 2 extends from the bottom to the top. The cover 3 placed on the housing 1 generally runs flush with the bottom surface. For various reasons, but in particular in order to protect the door closer from damage during the construction period, the housing 1 is not immediately embedded in the floor, rather it is inserted into an outer housing 4 mounted during the construction of the shell. The free end of the closer shaft which projects beyond the cover 3 is connected to the door to be closed in a rotationally fixed manner. If the latter is opened, the closer shaft 2 rotates, for example in the direction of arrow 5.

Mit der Schließerwelle 2 ist eine Nockenscheibe 6 drehfest verbunden. Sie ist in der Ausganslage symmetrisch zur Längsmittelachse 7 des Türschließers ausgebildet, jedoch muß dies nicht notwendigerweise so ein. Die symmetrische Form erlaubt jedoch die Verwendung für links oder rechts zu öffnende Türen und für Pendeltüren. Die Ausbildung der Nockenflanken bzw. des Nockenumfangs ist vorzugsweise so gewählt, daß die Rückstellkraft mit zunehmenden Drehöffnungswinkel der Tür bis zu einer 90°-Stellung zunimmt. Größere Öffnungswinkel sind relativ selten. Sollte jedoch eine Größere Öffnung der Tür möglich bzw. gewünscht sein, so verändert sich bei einem Öffnungswinkel von mehr als 90° die Rückstellkraft nicht mehr wesentlich.A cam 6 is connected in a rotationally fixed manner to the closer shaft 2. It is formed symmetrically to the longitudinal center axis 7 of the door closer in the starting position, but this does not necessarily have to be the case. However, the symmetrical shape allows it to be used for left or right opening doors and for swing doors. The design of the cam flanks or the cam circumference is preferably chosen so that the restoring force increases with an increasing angle of rotation of the door up to a 90 ° position. Larger opening angles are relatively rare. However, if a larger opening of the door is possible or desired, the restoring force does not change significantly at an opening angle of more than 90 °.

Eine exakte "O-Stellung" und leichte Fixierung ist dadurch gewährleistet daß die Nockenscheibe eine symmetrisch angeordnete Vertiefung 8 aufweist, in welche bei geschlossener Tür ein als drehbare Rolle ausgebildetes Rastglied 9 eines Schlittens 10 eingreift.An exact "O position" and easy fixation is ensured by the fact that the cam disc has a symmetrically arranged recess 8, into which a locking member 9 of a slide 10, which is designed as a rotatable roller, engages when the door is closed.

Der Schlitten 10 ist mit dem einen, in der Zeichnung dargestellen Ende 11 einer Verbindungsstange 12 fest verbunden. Das andere, in der Zeichnung nicht dargestellte rechte ende der Verbindungstange 12 ist in bekannter Weise mit einem Hydraulikkolben verbunden, der in einem Hydraulikzylinder bzw. einer zylindrischen Bohrung der Gehaüse 1 verschiebbar gelagert ist.The carriage 10 is fixedly connected to the one end 11 of a connecting rod 12 shown in the drawing. The other, not shown in the drawing, the right end of the connecting rod 12 is connected in a known manner to a hydraulic piston which is slidably mounted in a hydraulic cylinder or a cylindrical bore of the housing 1.

Das gemäß Fig. 2 gegabelte Ende 11 der Verbindungsstange 12 greift zwischen zwei wesentlichen den Schlitten 10 bildende Platten 13 und 14. Letztere und das Stangenende 11 sind mit Hilfe wenigstens zweier Verbindungsbolzen 15 und 16 zusammengehalten, denen, wie nachstehend noch erläutert wird, aufgrund ihrer besonderen Formgebung noch eine spezielle Aufgabe zukommt. Die Rolle 9 wird mit Hilfe eines Niets oder Bolzens 17 gehalten. Ein weiterer Niet oder Bolzen 18 dient zur Befestigung einer zweiten drehbaren Rolle 19 zwischen den Platten 13 und 14 am in der Zeichnung rechten Ende der Platten 13 und 14. Sie wird von dem gegabelten Ende 11 der Verbindungsstange 12 umfaßt. Zwischen den Rollen 9 und 19 befindet sich die Nokkenscheibe 6, wie Fig. 2 deutlich zu entnehmen ist.2 forked end 11 of the connecting rod 12 engages between two essential plates 10 and 14 forming the slide 10. The latter and the rod end 11 are held together by means of at least two connecting bolts 15 and 16, which, as will be explained below, due to their special shape still has a special task. The roller 9 is held by means of a rivet or bolt 17. Another rivet or bolt 18 is used to attach a second rotatable roller 19 between the plates 13 and 14 at the right end of the plates 13 and 14 in the drawing. It is encompassed by the forked end 11 of the connecting rod 12. The cam disk 6 is located between the rollers 9 and 19, as can be clearly seen in FIG. 2.

Die Platten 13 und 14 sind je mit einem sich in Längsrichtung der Verbindungsstange 12 erstreckenden, symmetrisch zur Längsmittelachse 7 angeordneten Schlitz 20 bzw. 21 versehen. Die Schlitzbreite entspricht dabei dem Durchmesser des diesen Schlitz durchsetzenden Teils 22 bzw. 23 der Schließerwelle 2. Diese Schließerwellteile und die Schlitze 20, 21 bilden eine erste Führung für den Schlitten 10 in Richtung des Doppelpfeils 22, d.h. der Verschieberichtung von Schlitten, Verbindungsstange 12 und Dämpfungskolben. Der Schlitten befindet sich gemäß Fig. 1 in seiner rechten Verschiebeendlange. Man erreicht dies mit Hilfe einer Rückstellfeder 23, deren nicht dargestelltes rechtes Federende am Dämpfungskolben abgestützt ist und auf die nachstehend noch näher eingegangen wird.The plates 13 and 14 are each provided with a slot 20 and 21 which extends in the longitudinal direction of the connecting rod 12 and is arranged symmetrically to the longitudinal central axis 7. The slot width corresponds to the diameter of the part 22 and 23 of the closer shaft 2 passing through this slot. These closer shaft parts and the slots 20, 21 form a first guide for the carriage 10 in the direction of the double arrow 22, i.e. the direction of displacement of the slide, connecting rod 12 and damping piston. According to FIG. 1, the carriage is in its right-hand sliding end length. This is achieved with the aid of a return spring 23, the not shown right spring end of which is supported on the damping piston and which will be discussed in more detail below.

Beim Drehöffnen der Tür, also bei einer Drehung der Nockenschreibe 6, beispielsweise im Sinne des Pfeils 5, wird auf die Verbindungsstange 12 außer der von der Kraft der Rückstellfeder 23 herrührenden Zugkraft, noch eine erhebliche Biegekraft aufgegeben. Um diese vom Dämpfungskolben fernzuhalten, ist gemäß der vorliegenden Erfindung eine zusätzliche Führung 24 vorgesehen. Sie besteht aus einer Fürhungsleiste 25 oder einer kleiner Führungsplatte und einem sie in Gebrauchslage von oben her, also im Sinne des Pfeils 26, übergreifenden Führungsschuh 27. Dieser wiederum wird durch die Unterseite 28 des Schlittens 10 bzw. der unteren Platte 14 und zwei über die Unterseite vorstehende Ansätze 29 und 30 gebildet. Vorteilhafterweise handelte es sich dabei um die verdickten Enden der beiden Verbindungsbolzen 15 und 16. Der seitliche Abstand der beiden Ansätze 29 und 30 entspricht dabei der Breite der Führungsleite 25, quer zur Bewegungsrichtung 22 gemessen. Zumindest die Mitten der beiden Führungen sind in Verschieberichtung gegeneinander versetzt.When the door is opened in rotation, that is, when the cam 6 is rotated, for example in the direction of arrow 5, a considerable bending force is exerted on the connecting rod 12 in addition to the tensile force resulting from the force of the return spring 23. In order to keep them away from the damping piston, an additional guide 24 is provided according to the present invention. It consists of a guide bar 25 or a small guide plate and a guide shoe 27 which overlaps it in the position of use from above, that is to say in the direction of the arrow 26. This is in turn guided by the underside 28 of the slide 10 or lower plate 14 and two projections 29 and 30 protruding from the underside. Advantageously, these were the thickened ends of the two connecting bolts 15 and 16. The lateral distance between the two lugs 29 and 30 corresponds to the width of the guide line 25, measured transversely to the direction of movement 22. At least the centers of the two guides are offset from one another in the direction of displacement.

Weil die Kräfte -wie gesagt- verhältnismäßig hoch sind, besteht die Führungsleiste 25 aus besonders verschleißfestem Material. Dies ist auch der Grund, weswegen man sie nicht am Boden 31 des Gehäuse 1 anformt, sondern separat fertigt und mit Hilfe zweier im Boden 31 gehaltener Bolzen 32 und 33, welche in entsprechende Bohrungen der Führungsleiste 25 eingreifen, festhält. Dies ermöglicht im Falle eines Verschleisses später auch den Austausch. Fig. 3 entnimmt man, daß die Höhe der Ansätze 29 und 30 etwa der Dicke der Führungsleiste 25 entspricht und daß die Ansätze lediglich mit den erforderlichen Spiel an den Längskanten 34 und 35 der Führungsleiste 25 anliegen, an denen sie entlangbewegt werden, wenn die Tür geöffnet bzw. geschlossen wird.Because the forces - as said - are relatively high, the guide bar 25 is made of particularly wear-resistant material. This is also the reason why they are not molded onto the base 31 of the housing 1, but are manufactured separately and are held in place with the aid of two bolts 32 and 33 held in the base 31, which engage in corresponding bores in the guide strip 25. In the event of wear, this also enables replacement later. Fig. 3 shows that the height of the lugs 29 and 30 corresponds approximately to the thickness of the guide bar 25 and that the lugs only rest with the required play on the longitudinal edges 34 and 35 of the guide bar 25, along which they are moved when the door is opened or closed.

Das schlittenseitige Ende 36 der Rückstellfeder 23 ist über ein Stützglied 37 im Bereich des Schlittens 10 am Gehäuse 1, genauer gesagt an einer Gehäuse-Querwand 38, abgestützt, die gemäß Fig. 1 einen nach oben hin offenen vertikalen Schlitz zum Durchtritt der Verbindungsstange 12 aufweist. Die wirksame Länge des Stützglieds 37 kann in Federlängsrichtung, also in Richtung der Längsmittelachse 7, dadurch verändert werden, daß es aus zwei Teilstücken 39 und 40 besteht, die in der genannten Richtung 22 gegeneinander verstell-und feststellbar sind.The slide-side end 36 of the return spring 23 is supported by a support member 37 in the area of the slide 10 on the housing 1, more precisely on a housing transverse wall 38, which according to FIG. 1 has an upwardly open vertical slot for the passage of the connecting rod 12 . The effective length of the support member 37 can be changed in the longitudinal direction of the spring, that is to say in the direction of the longitudinal central axis 7, in that it consists of two sections 39 and 40 which can be adjusted and locked in relation to one another in the direction 22 mentioned.

Das erste Stützglied-Teilstück 39 ist auf dem zugeordneten Ende der Verbindungsstange 12 drehbar gelagert. Außerdem stützt es sich unmittelbar auf einerentsprechend bearbeiteten Fläche 41 der Gehäuse-Querwand 38 ab. Es besitzt einen rohrförmigen Ansatz 42 und ist mit einem Außengewinde 43 versehen. Im übrigen ist es als Schneckenrad ausgebildet. Das zweite Teilstück 40 des Stützglieds 37 besitzt dementsprechend ein Innengewinde 44, so daß es gegenüber dem ersten Teilstück verschraubt werden kann. Es ist undrehbar, jedoch im Sinne des Doppelpfeils 22 verschiebbar im Gehäuse 1 gelagert. Das Verdrehen des zweiten Teilstücks 40 wird durch einen radial abstehenden ersten Ansatz 45 verhindert, der in eine sich parallel zur Verbindungsstange 12 erstreckende Gehäusenut 46 am Gehäuseboden 31 eingreift. Somit bewirkt ein Drehen des ersten Teilstücks 39 des Stützglieds 37 ein Verschieben des zweiten Teilstücks 40, beispielsweise im sinne des Pfeils 47, während eine gegenlaüfige Drehung des ersten Teilstücks 39 eine umgekehrte Verschiebung des zweiten Teilstücks zur Folge hat. Im letzteren Falle wird die wirksame Länge des Stützgleids 37 verkürzt, während im ersteren Falle, also bei einer Verschiebung des zweiten Teilstücks 40 in Pfeilrichtung 47, die wirksame Länge vergrößert und dadurch die Federspannung der Rückstellfeder 23 erhöht wird.The first support member section 39 is rotatably mounted on the associated end of the connecting rod 12. In addition, it is supported directly on a correspondingly machined surface 41 of the housing transverse wall 38. It has a tubular extension 42 and is provided with an external thread 43. Otherwise, it is designed as a worm wheel. The second section 40 of the support member 37 accordingly has an internal thread 44 so that it can be screwed relative to the first section. It is non-rotatable, but is displaceably mounted in the housing 1 in the sense of the double arrow 22. The twisting of the second section 40 is prevented by a radially protruding first extension 45 which engages in a housing groove 46 on the housing base 31 which extends parallel to the connecting rod 12. Thus, rotating the first section 39 of the support member 37 causes a displacement of the second section 40, for example in the direction of the arrow 47, while counter-rotation of the first section 39 results in a reverse displacement of the second section. In the latter case, the effective length of the support slide 37 is shortened, while in the former case, that is to say when the second section 40 is displaced in the direction of the arrow 47, the effective length is increased and the spring tension of the return spring 23 is thereby increased.

Das Drehen des als Schneckenrad ausgebildeten ersten Teilstücks 39 des Stützglieds 37 erreicht man über eine im Gehäuse 1 drehbar gelagerte Schnecke 48, die parallel zur Schließerwelle 2 verläuft und deren freies Ende in gleicher Richtung weist, wie das freie, gemäß Fig. 1 den Deckel 3 überragende Ende der Schließerwelle 2. Somit ist die Schnecke von der Oberseite des Türschließers aus sehr bequem zu drehen. Zu diesem Zwecke befindet sich an ihrem freien Drehachsende eine entsprechende Aufnahme fürein Drehwerkzeug, beispielsweise ein Schlitz oder Innensechskant zum Einsetzen eines Schraubendrehers oder Sechskantschlüssels.Rotation of the first section 39 of the support member 37, which is designed as a worm wheel, is achieved via a worm 48 rotatably mounted in the housing 1, which runs parallel to the closer shaft 2 and whose free end points in the same direction as the free, according to FIG. 1, the cover 3 protruding end of the closer shaft 2. This means that the screw can be turned very comfortably from the top of the door closer. For this purpose, a corresponding receptacle for a turning tool, for example a slot or hexagon socket for inserting a screwdriver or hexagon wrench, is located at its free end of the rotary axis.

Das zweite Stützglied-Teilstücks 40 ist mit einem zweiten, radial vorstehenden Ansatz 50 versehen, der einem Sichtfenster 51 zugeordnet ist. Letzteres befindet sich an der Oberseite des Gehäuses bzw. im Deckel 3. Damit läßt sich die Spannung der Rückstellfeder 23 in günstiger Weise von oben her einstellen und gleichzeitig überwachen bzw. genau festlegen. Letzteres ist insbesondere dann möglich, wenn das Sichtfenster mit einer entsprechenden Skala versehen ist.The second support member section 40 is provided with a second, radially projecting extension 50, which is assigned to a viewing window 51. The latter is located on the top of the housing or in the cover 3. This allows the tension of the return spring 23 to be set in a favorable manner from above and, at the same time, to monitor or precisely define it. The latter is possible in particular if the viewing window is provided with a corresponding scale.

Die Lagerung der Schließerwelle 2 erfolgt über zwei Kugellager 52 und 53. Nach außen hin erfolgt eine Abdichtung über einen O-Ring 54. Da es sich um einen hydraulischen Türchließer handelt, ist das Gehäuse mit Hydraulikflüssigkeit gefüllt und es befinden sich im Bereich des Kolbens und seines Zylinders entsprechende Ventile, wobei die Ausbildung in diesem Bereich von bekannter Bauart sein kann, weswegen sie hier nicht näher erläutert ist.The closer shaft 2 is supported by two ball bearings 52 and 53. To the outside there is a seal by means of an O-ring 54. Since it is a hydraulic door closer, the housing is filled with hydraulic fluid and it is located in the area of the piston and its cylinder corresponding valves, the training in this area can be of known design, which is why it is not explained here.

Claims (14)

1. Door closer, the closer shaft (2) of which carries a cam plate (6) which cooperates with a slide (10) guided on the closer shaft (2) (slots 20, 21), the slide being connected to a damping piston via a connecting rod (12), having a return spring (23) which is braced on the damping piston on the one hand and on a door closer housing (1) on the other, in addition, the slide (10) also being guided (guide 24) on the housing, and the two slide guides (20, 21 and 24) of the slide (10) being disposed offset in the sliding direction (22), characterized in that the return spring (23) is connected between the damping piston and the slide (10) and the additional guide (24) is formed by a guide shoe (27), carriage or the like and a guide strip (25), plate or the like, the guide shoe or the like engaging over the guide strip or the like and the guide shoe (27) or the like being located on the underside of the slide (10) and the guide strip (25) or the like being removably located on the housing (1) or vice versa.
2. Door closer according to claim 1, having a guide strip (25) or the like mounted on the housing (1), characterized in that the guide strip (25) or the like is made from wear-resistant material and is secured on the housing (1) in a push-in manner.
3. Door closer according to claim 1 or 2, characterized in that the guide shoe (27) or the like is constituted by the underside (28) of the slide which is remote from the free end of the closer shaft and two projections (29, 30) provided on this underside (28) of the slide at a distance corresponding to the width of the guide strips.
4. Door closer according to claim 3 with a slide (10) formed from two plates (13, 14) which accommodate the cam plate (6) and one of the ends of the connecting rod therebetween, the plates and the rod end (11) being connected to one another by two rivets (15, 16), characterized in that each rivet (15, 16) has an extension piece (29, 30) and the two extension pieces bear on the longitudinal edges (34, 35) of the guide strip (25) or the like.
5. Door closer according to at least one of the preceding claims, characterized in that the end (36) of the return spring (23) which is towards the slide is braced on the housing (1) via a bracing member (37) in the region of the slide (10), the bracing member (37) consisting of two portions (39, 40) which are connected to each other in an adjustable and lockable manner in order to vary the effective length of the said member, viewed in the longitudinal direction of the spring.
6. Door closer according to claim 5, characterized in that the first portion (39) of the bracing member is rotatably mounted on the connecting rod (12), is braced on a transverse wall (38) of the housing, and comprises a tubular projection (42) on which there is an external screw thread (43); and in that the second portion (40) of the bracing member, on which one end of the spring is braced, can be screwed to the screw threaded projection (42).
7. Door closer according to claim 6, characterized in that the first portion (39) of the bracing member is constructed as a worm gear and cooperates with a worm (46) mounted in the housing, the spindle (49) on which the worm rotates being provided with drive means.
8. Door closer according to claim 7, characterized in that the free end of the worm spindle (49) is provided with means for receiving a rotating tool.
9. Door closer according to claim 7 or 8, characterized in that the rotor spindle (49) of the worm (48) extends parallel with the closer shaft (2), its free end extending in the same direction as the free end of the closer shaft (2) which can be connected to the door.
10. Door closer according to at least one of claims 6 to 9, characterized in that the second portion (40) of the bracing member is mounted in the housing (1) in such a way as to be rotationally rigid but adapted for displacement parallel with itself.
11. Door closer according to claim 10, characterized in that the second portion (40) of the bracing member engages by means of a first projection (45) resembling a sliding block in a groove (46) extending in the housing parallel with the connecting rod (12).
12. Door closer according to claim 11, characterized by a second radially projecting member (50) which forms an indicating member of the second portion (40) of the bracing member which is associated with a viewing window (51).
13. Door closer according to claim 12, characterized in that the second projection (50) on the second portion (40) of the bracing member extends in the same direction as the free end of the closer shaft (2).
14. Door closer according to claim 12 or 13, characterized in that the viewing window (51) is provided with an adjusting scale or the like.
EP86110959A 1985-08-16 1986-08-08 Door closer Expired - Lifetime EP0212484B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110959T ATE40438T1 (en) 1985-08-16 1986-08-08 DOOR CLOSER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8524727U 1985-08-16
DE8524727U DE8524727U1 (en) 1985-08-16 1985-08-16

Publications (4)

Publication Number Publication Date
EP0212484A2 EP0212484A2 (en) 1987-03-04
EP0212484A3 EP0212484A3 (en) 1987-06-03
EP0212484B1 EP0212484B1 (en) 1989-01-25
EP0212484B2 true EP0212484B2 (en) 1992-09-02

Family

ID=6784703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110959A Expired - Lifetime EP0212484B2 (en) 1985-08-16 1986-08-08 Door closer

Country Status (4)

Country Link
EP (1) EP0212484B2 (en)
AT (1) ATE40438T1 (en)
DE (2) DE8524727U1 (en)
ES (1) ES2001533A6 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417013A (en) * 1992-07-10 1995-05-23 Dorma Gmbh + Co. Kg Overhead door closer with slide rail for concealed installation in door panels or door frames
DE9308568U1 (en) * 1993-06-09 1994-01-13 Dorma Gmbh & Co Kg Built-in door closer with slide rail linkage for concealed installation in door leaves or door frames
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
DE102011017794B4 (en) * 2011-04-29 2013-01-31 Geze Gmbh door closers
DE102011017795B4 (en) * 2011-04-29 2013-04-04 Geze Gmbh door closers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB138389A (en) * 1918-11-26 1920-02-12 George Norman Hall Improvements in door closing and checking means
DE1083701B (en) * 1957-12-09 1960-06-15 Ver Baubeschlag Gretsch Co Closer for the wings of swing doors
DE1709062A1 (en) * 1962-09-14 1971-05-19 Doerken & Mankel Kg Automatic closer for doors, preferably swing doors, especially floor door closers
US3222709A (en) * 1963-01-07 1965-12-14 Rixson Inc Door closing mechanism
DE1584185A1 (en) * 1964-08-07 1970-01-08 Ronan And Kunzl Inc Power operated door opener
DE2924311A1 (en) * 1979-06-15 1980-12-18 Dorma Baubeschlag SELF-ACTING DOOR CLOSER
DE3224300C2 (en) * 1982-06-29 1984-11-29 Geze Gmbh, 7250 Leonberg Door closer with adjustable closing force

Also Published As

Publication number Publication date
ES2001533A6 (en) 1988-06-01
ATE40438T1 (en) 1989-02-15
DE3661952D1 (en) 1989-03-02
EP0212484A3 (en) 1987-06-03
EP0212484B1 (en) 1989-01-25
DE8524727U1 (en) 1986-12-18
EP0212484A2 (en) 1987-03-04

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