DE1949240B2 - Automatic door closer - Google Patents

Description

3 ~ ⁴

30 to prevent rotation in a longitudinal groove 31 of the spring 26 is tensioned · ***** ™

Housing 10 holds and can be screwed onto a thread - 25 and the bottom wall -. » ^DC S ^1C ^ "^

pin 32 is supported, which is axially supported by the 38 of the damping device

Screw plug 12 penetrates and penetrates in its damping medium Part 33 mi

% ieTodenwand 23 is in its shoulders after Ä the foot flange

of the housing 10 defined position of use lifted off by the bottom wall 23 ^ \ ^^

a spring ring 34 is held. It is enclosed with an inside opening so it turns under d

laterally protruding tongues having catch ring 35 io tion of the spring 26 of the piston 25 nut ^ the

equipped, the recess 36 of the bottom wall coupled plates 15 15 after ^ «

23 overlaps. In this is through the catch ring 35 on the roller 18 and the Nockensc

axially displaceable to a limited extent a seal 37 under Schüeßerwelle 13 nut the door leaf m

-as- · ^{the sealing} «- ^{the Koibenstange 20} ₁₅ ^ ts ^^^ t ^ s

It should also be mentioned that in the drawing, during the movement of the piston 25, there is a

Channels, not shown, of the spring 26 contain the working space 38 ^dw ^ to ^ tader ^^ north

i d di Shüßll 13 thl g the bowel contained

Channels, not shown, of the spring 26 contain the Arb ^^

end space with which the Schüeßerwelle 13 contain- ing the work ^s £ ^e ™ ° ur ^ »™ contained in the intestine

tend space is connected and that moreover can escape from the channel 39 because m the öe

That between the piston 25 and the bottom wall *, the movement begins after the Ko ^ en rod

23 located, ring-shaped profiled working space 20, the seal 37 "^^^^ 23 aiüfert

38 d KlbZlidAd ii tll foot flange therefore against ^ ^Bod ™ ^d23 ^ fj

23 located, ring-shaped profiled working space 20 d g ^^^ 23 aiüfert

38 of the piston-cylinder arrangement an adjustable foot flange therefore against ^ ^Bod ™ ^d _B ² _o ³ _d ^ fj

Bare throttle containing channel 39 to the connec- tion so that the Ko benstange 20 m of the bottom wall

bl 23 fd gap sealed

Bare throttle containing channel 39 to the connec- tion so that the Ko bensg

manure channel runs. For the assembly of the piston pin 23 comprehensive gap sealed. fa

zens 24 is in the housing against the screw cap * ₅ ßere force in the Schheßsinne on the Tu

11 longitudinally offset a releasably lockable assembly, the cam disk 14 is supported against the in the h

Opening 40 attached. The housing 10 is for the guren left-hand roller 18 and ^ g ^^ ¹ £ j

Intended use essentially ins- Speed If the ^ ^e |; ^r ^

entirely filled with a liquid such as oil. is that the closer mechanism is overloaded

^{8 The position} _{30, which can be removed in S} special in Fig. 2, opens the safety valve. ¹ ^ J ^ limited

corresponds to the closed position of a swing door. Is thus possible BelastangjJ ^ ^s ^ S ueßers by

the door opened to one side or the other, it allows a higher closing speed

Thus, through the adjustments made by means of the closer shaft 13, the V ° ^rs P ^an ™ ° i5 ^d « ^ * £

rotated cam disk 14 mediating in at any time without opening the housing moghch there to do so

Fig. 2 right-side roller 18, the piston rod 20 35 only the threaded pin 32 from the outside

shifted to the right so that the piston 25 is to rotate.

1 sheet of drawings

Claims (2)

an automatic door closer of the patent claims: scfariebeaeii type to simplify the production and compared to the known design cheaper 1. Automatic door closer with one-in-one measurements to create and ensure operational safety Housing rotatably mounted closer shaft, 5 improve. According to the invention, this is essentially less hydraulic dampers coupled to it achieved by the fact that in the working space of the Zyfungseinrichtung, consisting of a seal that encompasses the piston rod through a Linders the cylinder on which the closer shaft pulls relative to the bottom wall is axially movable to a limited extent turned side closing bottom wall away from a channel between the piston rod and the bottom seal protruding piston rod and io denwand is arranged. The one provided here at the end of the piston attached, as well as bordered longitudinal movement of the piston rod in the a spring serving as a working memory, which surrounds the area penetrating the bottom wall with one end against the piston and the seal, the latter has a double function in this respect at the other end towards one of the normally open contacts than at the beginning of the working stroke of the shaft facing away from the end part of the cylinder 15 damping device through the piston rod in supported, characterized in that a layer blocking the channel is taken along, in the working space (38) of the cylinder (22) one in which there is an uncontrolled flow of the damping piston rod (20) encompassing seal (37) prevents condensation fluid while it is beginning Relative to the bottom wall (23), the opening of the door can be axially moved to a limited extent and lifted from the boom wall lent in front of a channel between the piston rod ao and releases the channel through which the damping (20) and the bottom wall (23) is arranged. liquid in the expanding working 2. Door closer according to claim 1, thereby the space can flow in practically unthrottled. For indicates that the channel of one the KoI- the function as according to the direction of movement of the rod (20) in the bottom wall (23) comprise piston rod controlled closing member for the Zuden Gap is formed. 25 flow channel, a very short stroke is sufficient, see above that the damping performance is not impaired. In addition, due to foreign bodies or the like Leaks in the valve arrangement are practically impossible. This improves operational safety. 30 In addition, particularly favorable space results - the invention relates to an automatic relationship. Door closer with a rotatable in a housing. In the drawing, the subject of the invention is in stored closer shaft, a hy- an exemplary embodiment coupled to it. It shows
hydraulic damping device, consisting of F i g. 1 an automatic floor spring geeiner through a the cylinder on which the closer- 35 measured a section II according to FIG. 2,
The bottom wall facing the shaft, FIG. 2, a section II-II according to FIG. 1. sealed protruding piston rod and the housing 10 of the embodiment a piston attached to its end, as well as a door closer placed on the ground, is with a darch Serving as a main memory spring, which with ih- a screw cap 11 closable Montageöffrem one end against the piston and provided with its attachment. In the area of one side wall is weideren A screw plug 12 is detachably arranged at the end against a screw plug 12 facing away from the closer shaft. In th end part of the cylinder is supported. the housing 10 and in the screw cap 11 is through In a known automatic door closer roller bearing, a closer shaft 13 is rotatably guided, this type controls the closer shaft with the help of one of its sealed protruding from the housing Cam has a slide that can be coupled to a door on the bottom wall of the pin. The closer cylinder penetrating rod loaded, which shaft 13 iranks within the housing 10 a piston movable in the cylinder carries a cam disk 14 above and below with its surface facing the bottom wall of one of the cam disk 14, two plat work spaces extend a hydraulic damping device 15, each with a longitudinal slot 16 which limited device and encompass its 50 closer shaft with its bottom wall. Between the plates 15 Reverted surface of an Fe forming the working memory, two rollers 18 can be rotated on each pin 17 which supports, the other end of which is supported against an abutment which rest against the cam disk 14, is applied by a from the housing to with that of the plates 15 and they connect the outside protruding pin is adjustable. The working carriage formed by the pin 17 is a crosshead Space of the piston-piston-cylinder arrangement 55 19 of a piston rod 20 through screws 21 kupström the working medium pelbar when the door is opened. The piston rod 20 penetrates an abem the spring-containing space through a seal arranged in the housing, the bottom of a the cylinder wall arranged channel to the cylinder 22 forming bottom wall 23 with play. With one of the escape of the working medium from the free end of the piston rod 20 is through A check valve hindering the working space is equipped with a piston pin 24 and a piston 25 in a limited manner is. The production of such an inflow duct, which is coupled to fit in the cylinder 22 les is time consuming. In particular, the wall needs to be slidable and one in the interior tion of the cylinder in the spring 26 which accommodates the channel and which forms the main memory rich of a rather great thickness. In addition, case-centering shoulder 27 carries a safety valve wise the operational reliability of the known, a 65 28 is used. The spring 26 lies against one end A spring-loaded ball as a closing member using a centering shoulder 27 encompassing the shoulder of the Check valve left a lot to be desired. Piston 25 and the other end is supported on one The invention is based on the object, with annular collar nut 29, which has a pin