EP0215264B2 - Türschliesser - Google Patents

Türschliesser Download PDF

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Publication number
EP0215264B2
EP0215264B2 EP86110703A EP86110703A EP0215264B2 EP 0215264 B2 EP0215264 B2 EP 0215264B2 EP 86110703 A EP86110703 A EP 86110703A EP 86110703 A EP86110703 A EP 86110703A EP 0215264 B2 EP0215264 B2 EP 0215264B2
Authority
EP
European Patent Office
Prior art keywords
piston
door
channel
valve
excess
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
EP86110703A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0215264B1 (de
EP0215264A3 (en
EP0215264A2 (de
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6785382&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0215264(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Priority to AT86110703T priority Critical patent/ATE42129T1/de
Publication of EP0215264A2 publication Critical patent/EP0215264A2/de
Publication of EP0215264A3 publication Critical patent/EP0215264A3/de
Publication of EP0215264B1 publication Critical patent/EP0215264B1/de
Application granted granted Critical
Publication of EP0215264B2 publication Critical patent/EP0215264B2/de
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
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • 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
    • E05F3/223—Hydraulic power-locks, e.g. with electrically operated hydraulic valves
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/254—Fluid or viscous friction
    • E05Y2201/256—Fluid or viscous friction with pistons or vanes
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/262—Type of motion, e.g. braking
    • E05Y2201/264—Type of motion, e.g. braking linear
    • 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 with a connectable to the door rotary member, the rotational movement of which can be converted into a sliding movement of the piston rod, with a piston which is displaceable in a cylinder against the force of a return spring at the piston rod end and which is hydraulic when the door is opened Presses liquid from the front cylinder chamber receiving the piston rod through a non-return valve into a rear cylinder chamber, from which it flows back when the door is turned back via a first housing channel and a first throttle valve inserted therein, which with a second channel opening into the front cylinder chamber second throttle valve is hydraulically connected, wherein the mouth of the second channel in the front cylinder chamber is closer to the rotary member than the mouth of the first channel in the front cylinder chamber and wherein the mouth of the second channel at each opening angle of the T is open and the front and rear cylinder space in the closing end area via a third channel are hydraulically connected, in which there is a third throttle valve, the piston returning to the starting position under spring force releasing the over
  • Such a door closer is already known from US-A-4,378,612.
  • a piston interacts with the fourth throttle valve and a transverse bore in the housing, but this hydraulic unit has the sole purpose of effecting damping in the end region of the opening movement of the door.
  • she does not take part in the automatic closing process.
  • only the transverse bores of the first three throttle valves are important for the closing process.
  • the throttling at the third throttle valve is stronger than at the second, so that the third throttle valve determines the flow and thus the closing speed of the door at the start of the closing movement. Because the flow through the second throttle valve is faster due to the lower throttling, the closing movement is accelerated when the door is opened by approximately 70 °.
  • the medium can only flow via the first throttle valve, so that the end movement is throttled accordingly. Hydraulic locking of the door is not provided for in the known door closer. You could shut off the third throttle valve completely and thereby an automatic one Prevent the wide open door from closing, but then the door could no longer be closed by hand.
  • the object of the invention is to improve the known door closer so that it additionally allows the possibility of hydraulic locking of the wide-open door with a convenient reset behavior, this determination being able to be solved by acting on the door.
  • the invention proposes that the door closer is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim. If the door provided with this door closer is opened wide, the piston covers the outflow opening of the first channel into the front cylinder chamber, so that the medium can only take the path via the first, the second channel hydraulically connected to it and the second throttle valve. The mouth of the second channel in the front cylinder chamber is arranged so that it cannot be covered by the piston even when the door is open to the maximum.
  • the closing characteristic can be predetermined, ie a slow closing up to a certain closing angle and then a fast closing thereafter.
  • the wing remains at a sufficiently large opening width because the medium no longer has the possibility of flowing from the rear cylinder space into the front cylinder space.
  • the door is thus in a predetermined Opening position, which preferably exceeds 80 ° to 90 °, is determined hydraulically. Automatic closing is only possible if you open a blocked hydraulic path from the rear to the front cylinder space.
  • the hydraulically held door can be turned by hand to act on the wing in the closed position, because a special flow path has been created for the hydraulic medium, which takes the place of the flow path blocked by closing the second throttle valve.
  • This special flow path is closed by means of the first pressure relief valve. It opens at excess pressure and allows the medium to flow back through the fourth channel and the fourth throttle valve.
  • To compensate for a high overpressure there is an additional flow path running in the same direction through the third pressure relief valve inside the piston. All the channels mentioned above and below consist in the usual way of transverse and longitudinal bores, primarily the housing.
  • the medium flows when the door is closed first from the rear cylinder chamber via the first and second channel to the second throttle valve - if the opening width exceeds 80 ° to 90 ° - and then (also) via the first throttle valve as soon as the opening width is around 80 ° to 90 °.
  • the third throttle channel is then released by the piston, so that a relatively large return flow cross-section is now available, which accelerates the last part of the closing movement leaves and at the same time for a sufficient force to operate, for example a door latch.
  • the medium flows through the first three channels only in one direction, namely from the rear to the front cylinder space.
  • the other mouths of the first and third channels are directly assigned to the rear cylinder space and they cannot be closed by the piston in any piston position.
  • the piston 1 When opening the door, not shown, which is rotatably connected in a known manner to the rotary member of the door closer, the piston 1 is moved in the cylinder 2 in the direction of arrow 3.
  • the cylinder 2 is located in the housing of the door closer or forms part of the same.
  • the rotary movement of the rotary member is also transmitted in a known manner, preferably via an eccentric mechanism to the piston rod 4 and thus also to the piston 1 firmly connected to it.
  • the rotary member is assigned to the end of the piston rod remote from the piston.
  • the latter is surrounded concentrically by a strong return spring 5, the right end of which in the drawing is supported on the piston 1 and the left end (not shown) of which is supported on a housing wall.
  • the return spring When the piston is moved in the direction of arrow 3, i.e. when the door is opened, the return spring is tensioned.
  • the front cylinder space 6 receiving the piston rod and the spring like the rear cylinder space 7, is filled with a suitable hydraulic fluid.
  • a second channel 16 opens into the bore 15 of the first throttle valve 12. It consists of the short connecting piece 17 between the first throttle valve 12 and a second throttle valve 18 and a transverse bore 19 which runs parallel to the transverse bore 13 and also opens into the front cylinder chamber 6 .
  • the two throttle valves 12 and 18 are located on a housing or cylinder wall 20.
  • a third throttle valve 22 and a fourth throttle valve 23 are likewise offset in the longitudinal direction on an opposite wall 21 of the housing or of the cylinder.
  • the third throttle valve 22 includes a third Channel 24. It consists of the transverse channel 25, which opens approximately opposite from the transverse channel 10 into the rear cylinder chamber 7 and the longitudinal channel 26 and another transverse channel 27 opening into the front cylinder chamber 6.
  • the piston 1 has a two-part piston ring 28.
  • the transverse channel 27 is now arranged so that it is released from the piston ring 28 in the initial position of the piston (Fig. 2).
  • the play between the piston and the cylinder wall 29 is large enough to allow the medium to enter the transverse bore 27 from the front cylinder space 6 as soon as its mouth in the cylinder interior is at least partially released by the piston ring.
  • the fourth channel 37 finally consists of the transverse bore 30 opening into the front cylinder chamber, the longitudinal bore 31 adjoining it and a further transverse bore 32, 33 which leads to a first pressure relief valve 34 and an annular groove 35 is connected between the parts thereof.
  • the transverse bore 33 also forms the outlet bore of the first pressure relief valve 34. Its inlet bore is denoted by 36 and it opens into the rear cylinder chamber 7. However, it is not released in the starting position of the piston 1, as will be explained below.
  • the inlet 36 of the first pressure relief valve 34 is a spring-loaded closure member 38, 39 one on the piston 1 attached auxiliary valve 40 closed (Fig. 5).
  • Both the closure member 39 and the housing 41 of the auxiliary valve 40 have a cup-shaped shape.
  • the pot casing of the housing encompasses that of the closure member and the pot bases are separated from one another.
  • the loading spring 38 for the closure member 39 It is supported on the two pot bases.
  • the pot bottom of the housing 41 has a central hole 42.
  • the closure member 39 is slidably mounted in the housing 41 in the longitudinal direction of the piston axis.
  • a second pressure relief valve 47 is installed in the piston 1 and is closed when the door is closed.
  • Its locking member 48 has the shape of a bolt with an outer collar 49 at its end associated with the rear cylinder space 7. Both the bolt and the collar 49 are designed in a star shape on the outer circumference in order to achieve good guidance in the piston 1 on the one hand and flow through the medium on the other hand.
  • the housing of this second pressure relief valve is formed by the piston 1. Accordingly, there is also the annular valve seat surface 50.
  • the loading spring 51 which holds the closure member in the closed position, is centered by a tubular extension and is supported at one end on the outside of the closure member and at the other end on the bottom of the housing 41 of the auxiliary valve 40 .
  • the housing 48 of the second pressure relief valve 47 also forms a housing of a third, oppositely opening pressure relief valve 53 which is closed when the door is closed.
  • Its closing element 54 preferably consists of a ball, and its load spring 55, like the other valve springs, is a helical compression spring.
  • the closure member 56 of the first pressure relief valve 34 is a cantilevered piston, and its loading spring is designated 57. It normally keeps the valve closed.
  • the spring-facing, reduced-diameter end of the closure member 56 interacts with the housing valve seat at the right end of the inlet channel 36 in FIG. 5.
  • the closure members 56, 48, 54, 39 of the first, second and third pressure relief valves 34, 47, 53 and the auxiliary valve 40 and thus also these valves themselves are arranged concentrically with the geometric axis of the cylinder or piston 1. This makes production particularly easy.
  • the separately manufactured bottom 44 At the end of the cylinder facing away from the rotary member there is the separately manufactured bottom 44 mentioned. It receives the first pressure relief valve 34 and its transverse bore 33. In addition, an outer groove forms the aforementioned annular groove 35. On both sides of the latter there is an O-ring 58 and 59, respectively. The outside is held by a spring ring 60 or the like.
  • the separate production of this cylinder bottom has the advantage that it can be easily exchanged for another. For example, you can use a solenoid valve for fire protection doors instead of the one shown, without making any changes to the housing.
  • the solenoid valves can be operated by a smoke detector to ensure that an open door is closed immediately in the event of a fire or smoke in general.
  • the housing or the cylinder for the piston 1 is located in an outer housing 62, which can be closed by means of a cover, not shown, so that, in particular, the throttle valves are not accessible to unauthorized persons. It remains to be added that the second pressure relief valve 47 opens at a substantially higher pressure than the first pressure relief valve 34.
  • this door closer is as follows, with two cases to be distinguished. In the first case, the throttle valve 18 is open. This means that the door is not hydraulically locked.
  • the return spring 5 presses the piston 1 and all parts coupled with it in terms of movement back into the starting position shown in FIG. 1. This reduces the volume of the rear cylinder space 7, and this requires the amount of liquid that previously occurred when the door was opened to flow back. However, it does not take the route via the second pressure relief valve 47 because it works as a check valve, but via the second throttle valve 18 and the second channel 16. As soon as the piston has run back far enough and the piston ring 28 the transverse bore 13 of the first channel 14 at least partially released, the medium can also flow into the front cylinder space 6 via the first channel. If the first throttle valve is opened further than the second, at least the majority of the back-flowing liquid will flow via the first throttle valve 12. When the first channel 14 or its transverse bore 13 is released, the door is in an open position of 80 to 90 °.
  • the third channel or its transverse channel 27 is finally released, so that in the final phase of the door closing, the medium can also flow back into the front cylinder chamber 6 via the third channel and the third throttle valve. This causes an accelerated closing in the final phase and a strong decrease in the throttling effect, so that the door closer provides sufficient torque to actuate a lock latch on the door.
  • the second throttle valve 18 is closed. If the door is only opened by an angle of 80 to 90 °, the first channel or its transverse bore 13 is still released by the piston or piston ring 28, and therefore the door closes after the actuation force ceases to exist solely on the basis of the force of the return spring 5 .
  • the opening angle of the door exceeds 80 to 90 °, not only are the third and first channels closed, but also the second channel due to the second throttle valve. This means that no oil or the like can flow back through these channels from the rear into the front cylinder space 6.
  • the door remains hydraulically secured in an open position. Now there is still a hydraulic connection between the front and rear cylinder space via the fourth throttle valve 23 and the fourth channel 37.
  • the first pressure relief valve 34 is also located in the fourth channel 37.
  • the auxiliary valve and the pressure relief valves operate, as said, in the manner of check valves, i.e. they open when the prevailing pressure exerts a greater force on their closure member than the closing spring acting in the opposite direction.
  • the piston movement creates an overpressure in the front cylinder chamber, while when the door is closed, the rear cylinder chamber 7 comes under overpressure.
  • this overpressure acts, as described above, on the closure member 56 of the first overpressure valve 1.
  • the closure member 54 of the third pressure relief valve 53 The hydraulic path goes through the radial slot or slots 52 and the opening of the tubular extension for centering the load spring 51.
  • the load spring 55 of the third pressure relief valve 53 and that of the first pressure relief valve 34 are now coordinated so that the third pressure relief valve 53 opens at a significantly higher pressure than the first pressure relief valve 34, which can be seen from the dimensioning of the springs in the drawing.
  • the pressure in the rear cylinder space 7 becomes large enough to also open the third pressure relief valve 53.
  • a sufficiently large return flow cross-section is available which mitigates or eliminates the strong throttling set.
  • the third pressure relief valve 53 can of course be effective from any opening position of the door, in contrast to the first pressure relief valve 34, which is only "released" from an opening angle of the door of 80 to 90 °.
  • the first pressure relief valve 34 has a stable open position. Its inlet bore 36 has a small one Cross section so that the force is relatively small when the valve is closed. As soon as the valve 34 opens, however, the liquid acts against a larger area, which then requires less force to keep it open. After there is a back pressure in the fourth channel through the fourth throttle valve 23, the first throttle valve 34 only closes again when the hydraulic fluid can flow out through another path or when the door is stopped in an intermediate position before the transverse bore 13 of the first Throttle valve 12 is released. It is particularly advantageous that the closing speed of the door leaf can be set in the range above 80 to 90 ° due to the use of the fourth throttle valve 23.
  • the mentioned outer collar 48 of the second pressure relief valve 47 is not circular on the outside, but is star-shaped. It is thereby achieved in a very advantageous manner that the damping fluid is not swirled so strongly when flowing over into the rear cylinder space 7.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Lock And Its Accessories (AREA)
EP86110703A 1985-09-18 1986-08-02 Türschliesser Expired - Lifetime EP0215264B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110703T ATE42129T1 (de) 1985-09-18 1986-08-02 Tuerschliesser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8526660U DE8526660U1 (de) 1985-09-18 1985-09-18 Türschließer
DE8526660U 1985-09-18

Publications (4)

Publication Number Publication Date
EP0215264A2 EP0215264A2 (de) 1987-03-25
EP0215264A3 EP0215264A3 (en) 1987-08-12
EP0215264B1 EP0215264B1 (de) 1989-04-12
EP0215264B2 true EP0215264B2 (de) 1992-04-01

Family

ID=6785382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110703A Expired - Lifetime EP0215264B2 (de) 1985-09-18 1986-08-02 Türschliesser

Country Status (4)

Country Link
EP (1) EP0215264B2 (es)
AT (1) ATE42129T1 (es)
DE (2) DE8526660U1 (es)
ES (1) ES2002753A6 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8704569U1 (de) * 1987-03-27 1987-07-16 Gretsch-Unitas GmbH Baubeschläge, 7257 Ditzingen Türschließer
US5107677A (en) * 1987-05-21 1992-04-28 Vertran Manufacturing Company Hydraulic door actuator
US4910961A (en) * 1987-05-21 1990-03-27 Vertran Manufacturing Company Hydraulic door opening or closing device
US5161957A (en) * 1987-05-21 1992-11-10 Vertran Manufacturing Company Hydraulic door actuator
DE8801895U1 (de) * 1988-02-13 1988-03-24 Gretsch-Unitas GmbH Baubeschläge, 7257 Ditzingen Türschließer mit hydraulischer Feststellvorrichtung
DE8801894U1 (de) * 1988-02-13 1988-03-24 Gretsch-Unitas GmbH Baubeschläge, 7257 Ditzingen Türschließer mit einer hydraulischen Feststellvorrichtung
DE10145200B4 (de) * 2001-09-13 2015-09-10 Geze Gmbh Türschließer
DE102010017574B4 (de) * 2010-06-25 2019-11-28 Dormakaba Deutschland Gmbh Türschließer
ITVI20120255A1 (it) * 2012-10-04 2014-04-05 In & Tec Srl Dispositivo a cerniera per porte, ante o similari
HUE032081T2 (en) 2013-05-28 2017-09-28 Gang Gwo Ind Co Ltd Hydraulic hinge for glass door
DE102014103580B3 (de) * 2014-03-17 2015-06-03 Dorma Deutschland Gmbh Hydraulischer Dämpfer mit einem Gehäuse, insbesondere für einen Türschließer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378612A (en) * 1981-03-16 1983-04-05 Schlage Lock Company Door closer delayed action speed control system
DE3225559C2 (de) * 1981-09-08 1985-08-14 BKS Sicherheitstechnik GmbH, 5040 Brühl Selbsttätiger Türschließer mit hydraulischer Feststelleinrichtung
DE3315913C2 (de) * 1983-05-02 1986-04-03 BKS GmbH, 5620 Velbert Selbsttätiger Türschließer mit hydraulischer Feststelleinrichtung
DE3332388A1 (de) * 1983-09-08 1985-03-21 Dorma-Baubeschlag Gmbh & Co Kg, 5828 Ennepetal Tuerschliesser

Also Published As

Publication number Publication date
EP0215264B1 (de) 1989-04-12
EP0215264A3 (en) 1987-08-12
EP0215264A2 (de) 1987-03-25
DE8526660U1 (de) 1987-01-22
ATE42129T1 (de) 1989-04-15
ES2002753A6 (es) 1988-10-01
DE3662801D1 (en) 1989-05-18

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