DE1784977C

DE1784977C - Door closer. Eliminated from: 1759869

Info

Publication number: DE1784977C
Authority: DE
Inventors: Reinhold; Furchner Heinz; 5620 Velbert Perlick
Original assignee: Eaton GmbH
Current assignee: Eaton GmbH
Publication date: 1972-12-14

Description

schwächer geöffnet bzw. verschlossen werden. Zwischen der Umfangsfläche der Dämpfungseinstellschraube 16 und der Bohrungsfläche der Rohrung 15 befindet sich ein Spalt 15', der mit zwei quer verlaufenden Kanälen 17 α und 17 ft in Verbindung steht, die nach außen durch zwei eingeschlagene Kugeln 18 verschlossen sind. Der Kanal 17 α mündet in die Gehäusebohrung 1', während der Kanal 17 b in einen Ringspalt 1" zwischen der Umfangsfläche des DämpferKolbens 2 und der Innenfläche der Gehäusebohrung 1' mündet. An den Schmalseiten des Türschließergehäuses 1 sind Halterungsstege 1'" angebracht, die mit Befestigungsbohrungen 19 versehen sind. Die Einfüllöffnung an der Befestigungsebene I¹ des Schließergehäuses 1 wird durch eine Dichtschraube 20 verschlossen.opened or closed more weakly. Between the circumferential surface of the damping adjustment screw 16 and the bore surface of the tubing 15 there is a gap 15 ′, which is connected to two transverse channels 17 α and 17 ft, which are closed to the outside by two hammered balls 18. The channel 17 α opens into the housing bore 1 ', while the channel 17 b opens into an annular gap 1 "between the circumferential surface of the damper piston 2 and the inner surface of the housing bore 1'. On the narrow sides of the door closer housing 1, mounting webs 1 '" are attached are provided with mounting holes 19. The filling opening on the fastening plane I ^{1 of} the closer housing 1 is closed by a sealing screw 20.

Beim öffnen der Tür, d. h. beim Rücklauf des Dämpferkolbens 2, wird die Kolbenstange 3 durch das geradverzahnte Zahnritzel 9 in Richtung der strichpunktiert gezeichneten Rücklauflage (s. F i g. 2) ao geschoben. Dabei fließt ein Teil des den gesamten Innenraum des Schließergehäuse 1 ausfüllenden hydraulischen Mediums durch die Bohrung 12, durch die axiale Bohrung 13, unter Abheben der Ventilkugel 14 in die Durchtrittsbohrung 2' und von dort "5 an die Unterseite des Dämpferkolbens 2. Gleichzeitig wird die Schließerfeder 7 zusammengedrückt und somit vorgespannt, wobei etwaige Torsionskräfte in der Schließerfeder 7 durch das Spurlager 6 nicht entstehen können, mithin keine Verdrehung des Dämpferkolbens 2 eintritt. Nach einer bestimmten Rücklaufbewegung der Kolbenstange 3 wird deren Bohrung 12 von dem freien Ende der Führungshülse 5 verdeckt, so daß der Durchfluß des hydraulischen Mediums durch die radiale Bohrung 12 und die axiale Bohrung 13 so weit gedrosselt wird, wie es das Spiel zwischen der Kolbenstange 3 und der Führungshülse 5 gestattet. Dadurch wird ein gewaltsames Auf- When opening the door, i. H. when the Damper piston 2, the piston rod 3 is through the straight-toothed pinion 9 in the direction of the dash-dotted return position (see Fig. 2) ao pushed. In doing so, part of the whole flows Interior of the closer housing 1 filling hydraulic medium through the bore 12 through the axial bore 13, with lifting of the valve ball 14 into the through bore 2 'and from there "5 to the underside of the damper piston 2. At the same time, the closer spring 7 is compressed and thus preloaded, with any torsional forces in the closer spring 7 not being caused by the thrust bearing 6 can, therefore no rotation of the damper piston 2 occurs. After a certain return movement the bore 12 of the piston rod 3 is connected to the free end of the guide sleeve 5 covered, so that the flow of the hydraulic medium through the radial bore 12 and the axial bore 13 is throttled as far as the play between the piston rod 3 and the guide sleeve 5 allows. This creates a violent uprising

35 schlagen der Tür im letzten Teil der Öffnungsphase wirksam gedämpft bzw. verhindert. 35 hitting the door in the last part of the opening phase is effectively dampened or prevented.

Wird die Tür im geöffneten Zustand losgelassen, so setzt unter Entspannen der zylindrischen Schließerfeder 7 der Schließvorgang ein. Dabei verschließt die Ventilkugel 14 die axiale Bohrung 13, so daß das vom Dämpferkolben 2 verdrängte hydraulische Medium über die Kanäle 17 a und 17 6 in die Bohrung 15 fließt und von dort zurück in den Zylinderinnenraum. Sobald der Dämpferkolben 2 mit seiner Stirnseite den Kanal 17 α erreicht und diesen bei fortschreitendem Schließvorgang verdeckt, wird die Dämpfung entsprechend erhöht, da nun das hydraulische Medium gezwungen ist, allein über den Kanal YIb und die Bohrung 15 zurück in den Gehäuseinnenraum zu strömen. Beim weiteren Vorlauf erreicht der Dämpferkolben 2 schließlich mit seiner Stirnseite auch den Kanal 17 b, wodurch der restliche im Arbeitsraum befindliche Flüssigkeitsteii noch stärker gedrosselt wird und nun zunächst den Ringspalt 1" zwischen dem Dämpferkolben 2 und Gehäusebohrung 1' durchströmen muß, um in den Kanal 17 b zu gelangen. Von dort fließt das hydraulische Medium durch den Spalt 15' in die Bohrung 15 und dann in den Innenraum des Schließergehäuses 1. Auf diese Weise wird ein gewaltsames Zuschlagen der Tür wirksam verhindert.If the door is released in the open state, the closing process begins with the relaxation of the cylindrical closer spring 7. The valve ball 14 closes the axial bore 13 so that the hydraulic medium displaced by the damper piston 2 flows through the channels 17 a and 17 6 into the bore 15 and from there back into the cylinder interior. As soon as the end face of the damper piston 2 reaches the channel 17 α and covers it as the closing process progresses, the damping is increased accordingly, since the hydraulic medium is now forced to flow back into the housing interior via the channel YIb and the bore 15 alone. As the flow continues, the end face of the damper piston 2 finally also reaches the channel 17 b, whereby the remaining liquid part in the working space is throttled even more and now first has to flow through the annular gap 1 "between the damper piston 2 and housing bore 1 'in order to enter the channel 17 b . From there, the hydraulic medium flows through the gap 15 'into the bore 15 and then into the interior of the closer housing 1. This effectively prevents the door from slamming shut.

In der letzten Schließphase wird der Kanal 17 a durch den Dämpferkolben 2 wieder freigegeben, so daß nun die über den Ringspalt 1", den Kanal 17 b und den Spalt 15' verdrängte Bremsflüssigkeit über den Kanal 17 α unmittelbar in die Gehäusebohrung 1' fließen kann. Die Dämpfung wird dadurch schlagartig aufgehoben, so daß die Tür unter der Wirkung der Schließerfeder 7 noch sicher in ihre Schließlage gedrückt werden kann, in der die Türschloßfallc in die entsprechende öffnung des Schließbleches einspringt. In the final closing phase of the channel 17 a released through the damper piston 2, so that now the can b and the gap 15 'displaced brake fluid via the channel 17 α directly into the housing bore 1' flowing through the annular gap 1 ", the channel 17 The damping is thereby abruptly canceled, so that the door can still be pressed safely into its closed position under the action of the closer spring 7, in which the door lock case jumps into the corresponding opening of the strike plate.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 not only the closing movement of the door leaf, but also its opening movement effectively at least in the area of larger door opening angles

1. Door closer with one of the closer brakes is capable.

housing outstanding closer axis, a hy- 5 To accomplish this task with the simplest possible means

hydraulic braking device, which can be solved in one, is according to the invention a piston

cylinder filled with damping fluid rod encompassing, fixed guide sleeve

Slidable damper piston as well as one seen with it, the larger door opening angle in relation

has connected piston rod, which covers the radial bore at her. That way you can

The end facing the piston is effective on both sides when the door is opened

cylinder spaces located in the piston are "damped" together.

the connecting axial bore with a radia- 'Advantageous is the guide sleeve between the

len has bore and arranged at its other end closer spring and the piston rod and

in a guide bushing of the housing gleitvej- provided with a flange-like collar, which under

is slidably mounted as well as with a toothing 15 the effect of the closer supported on it

is provided, which is firmly attached to the face of the guide bushing on the closer spring.

Axis attached pinion engages, and lies with. This results in a very compact building

a closer encompassing the piston rod - expedient arrangement of the radial bore in

spring, characterized by a guide bushing which controls the piston rod and which

Piston rod (3) encompassing, fixed guide 20 with a guide task for you at the same time

sleeve (5), which takes over in the area of the larger Türötf closer,

angle covers the radial bore (12). An embodiment of the invention is shown in

2. Door closer according to claim 1, characterized shown drawings. It shows

indicates that the guide sleeve (5) between F i g. 1 is a front view of the door closer,

the closer spring (7) and the piston rod (3) a ₅ Fig. 2 is a section along the line H-II of the

arranged and with a flange-like collar Fig. 1.

(5 ') is provided, which under the action of the door closer shown consists essentially

on it supporting closer spring (7) firmly borrowed from a closer housing 1, a damper

the end face (4 ') of the guide bushing (4) rests. piston 2 and a piston rod 3, which is attached to her

30 free end provided with straight teeth .V is. The piston rod 3 is supported with its free end

in a guide bushing 4 as well as in a guide sleeve 5, which with its flange-like collar 5 ' is attached 35 to the end face 4 'of the guide bushing 4. On the back of the damper piston 2 is a

The invention relates to a door closer thrust bearing 6 attached, on which a cylinder with a see closer spring 7 protruding from the closer housing in the form of a helical spring closer axis, a hydraulic Bremseinrich- with its end T is supported, while the other end device, one in one with damping fluid 7 ″ against the flange-like collar 5 'of the guide-filled cylinder pushes the displaceable damper piston 40 sleeve 5 one of its dividing line 3 ″ in the center of the cylinder chambers located on both sides of the piston, acting on the damper piston 2, connecting an axial bore with a radial bore very close to the piston rod axis 3 ″ and at its other end 45 or even coincides with this. D The damper in a guide bushing of the housing sliding piston 2 and the piston rod 3 are slidably mounted and firmly connected to one another with a toothing cross bolt 10, which is also provided, which is in a damper piston 2 on the closer axis when the damper piston 2 is unloaded by the elastic Pinion engages, and with a closer spring encompassing the KoI- zität of a compressed sealing ring 11 on rod. 50 its two ends frictionally by shear-Bei known door closers of the above type (z. B. after forces is held in its installed state. In the French patent 819 177) in the piston rod 3 is a radial bore 12 located on both sides of the damper piston Cylindrical and an axial bore 13, the valve bore end 13 ′, which connects to one another at its enlarged derraums, is closed by a valve ball 14 or a check valve is arranged which can be opened when closing 55. The damper piston 2, provided with a passage of the door leaf, closes the valve bore 2 'and is guided in a slidable manner through the damping fluid for the purpose of reaching the housing bore 1', the hydraulic braking effect being forced to flow through a narrow outward through a throttle duct with the door closer is, while housing 1 to be screwed sealing nut 1 ^IX verbei the opening movement of the door leaf 60 is closed. Parallel to the inclined KoI valve ball lifts from its valve seat and thereby benstangenachse 3 '"and to the hole 13 is in the valve hole opens, so that the damper closer housing 1 another hole 15 angeordiquid from one to the other cylinder space net, which on the the closer axis 8 can flow practically unhindered opposite, with no sloping side of the piston rod 3, so the hydraulic braking occurs and a hard mounting plane V of the door closer faces. Hitting the door cannot be avoided. The bore 15 is offset in diameter Accordingly, it is the object of the invention to improve the door closer mentioned at its expansion by a throttle cone so that 16 'of a damping adjustment screw 16 is stronger or stronger.