EP2840212A1 - Türbetätiger mit einem Druckausgleichselement - Google Patents

Türbetätiger mit einem Druckausgleichselement Download PDF

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Publication number
EP2840212A1
EP2840212A1 EP14001918.3A EP14001918A EP2840212A1 EP 2840212 A1 EP2840212 A1 EP 2840212A1 EP 14001918 A EP14001918 A EP 14001918A EP 2840212 A1 EP2840212 A1 EP 2840212A1
Authority
EP
European Patent Office
Prior art keywords
pressure compensation
housing
compensation element
door
door operator
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.)
Withdrawn
Application number
EP14001918.3A
Other languages
German (de)
English (en)
French (fr)
Inventor
Volker Bienek
Thomas Wildförster
Thomas Salutzki
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.)
Dorma Deutschland GmbH
Original Assignee
Dorma Deutschland GmbH
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
Application filed by Dorma Deutschland GmbH filed Critical Dorma Deutschland GmbH
Publication of EP2840212A1 publication Critical patent/EP2840212A1/de
Withdrawn legal-status Critical Current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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form, shape
    • E05Y2800/29—Form, shape forming a unitary piece with another element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/34—Form stability
    • E05Y2800/342—Deformable
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Protection
    • E05Y2800/404—Protection against component faults or failure
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/67—Materials; Strength alteration thereof

Definitions

  • the present invention relates to a door operator for actuating a door leaf of a door, comprising a housing in which a plurality of functional elements are housed with a respective geometric shell shape to form a Schobetuschigermechanik and wherein in the housing further comprises a damping fluid is introduced, wherein at least one pressure compensation element provided within the housing is that has a compressible material and prevents pressure increases in the damping fluid.
  • the door operator in the context of the present invention relates to passively acting door operators, which have a closing spring as energy storage. Furthermore, have a damping unit with which a closing movement of the door leaf can be controlled. Furthermore, the door operator according to the present invention also relates to electro-hydraulic door operators, which can also perform an opening movement of the door leaf in addition to the closing movement.
  • a number of functional elements are added, which form the Matbetuschigermechanik, wherein the functional elements have a shell shape, which is determined by the outer contour of the functional elements, so that a piston is, for example cylindrical in shape and so that the geometric envelope shape of the piston by a lateral surface and two End surfaces is determined.
  • Housing door operators are usually designed pressure-tight, and a pressure-tight design is therefore already required to escape to avoid damping fluid from the housing.
  • a pressure-tight design is therefore already required to escape to avoid damping fluid from the housing.
  • At a temperature increase of the door operator for example, when exposed to direct sunlight, there may be an increase in pressure of the damping fluid in the housing of the door operator, which can lead to failure of the door operator, for example, sealing elements to seal the housing can be damaged or cracks in Form housing.
  • a door operator for actuating a door leaf of a door is known, and in the housing of the door operator, a damping fluid is introduced, which can expand upon heating of the door operator, so that in the housing of the door operator, an overpressure.
  • a pressure relief valve which creates a connection of the interior of the housing with the outside.
  • the pressure relief valve is designed so that upon reaching a limit pressure in the housing of the door actuator damping fluid can escape controlled out of the housing. In principle, however, it is desirable to prevent the escape of damping fluid from the housing, especially since it may consist of an oil medium.
  • a door operator for actuating a door leaf of a door in which there is a damping fluid in the housing of the door operator.
  • a pressure compensation element is provided, which is formed by a differential housing with a pressure compensation chamber.
  • the pressure compensation chamber is via a pressure or temperature-dependent closure against the with the damping fluid filled space in the housing of the door operator connected and may form an air-filled chamber, and the closure may be formed for example by valves or other means that open only at a pressure occurring within the housing of the door operator, so that the damping fluid entering the pressure compensation chamber can.
  • the differential housing Since only limited accommodation options for the arrangement of the pressure compensation element are present within the door operator, it is proposed to introduce the differential housing within the spring chamber, in particular on the inside into the closing spring. Disadvantageously, despite the use of the free space within the closing spring for accommodating the pressure compensation element, the differential housing occupies a space which reduces the possible filling amount of the housing of the door operator with damping fluid. However, it is desirable to fill the housing of the door actuator with the largest possible amount of damping fluid, as a large amount of pressure oil allows a longer service life, and it is an improved oil purity allows, as located in the oil impurities, for example, due to abrasion are able to distribute to a larger amount of oil.
  • the DE 20 2012 100 497 U1 shows a door operator for actuating a door leaf of a door with a housing in which a plurality of functional elements are formed to form a Schobetuschigermechanik and wherein in the housing further comprises a damping fluid is introduced, wherein at least one pressure compensation element is provided within the housing having a compressible material and pressure peaks prevented in the damping fluid.
  • the compressible material consists of a closed, cellular plastic material with high volume compressibility.
  • the pressure compensation element is in the spring chamber of the door operator, the Part of the tank space is, and the tank space forms the space in the housing of the door operator, in which the damping fluid is not at least for the operation of the door operator under pressure. In this case, the pressure compensation element occupies a not insignificant part of the tank space, which in turn reduces the maximum recordable in the housing of the door operator amount of damping fluid.
  • the object of the invention is to develop a door operator for actuating a door leaf of a door such that an impermissible pressure increase in the damping fluid in the housing of the door operator is avoided, and it should be taken as large amount of damping fluid in the housing of the door operator.
  • the invention includes the technical teaching that at least one pressure compensation element is received or arranged in or on at least one functional element of the Matbet.igermechanik while maintaining the geometric envelope shape.
  • the invention advantageously uses the possibility of integrating the pressure compensation element in at least one functional element of the door operator mechanism.
  • a receiving pocket is provided in at least one functional element, in which the pressure compensation element can be accommodated without the geometric envelope shape of the functional element changes. Consequently, the pressure compensation element displaces no damping fluid, so that an amount of damping fluid can be accommodated in the housing of the door operator, which corresponds to the usual amount, if no pressure compensation element is provided in the damping fluid chamber of the door operator.
  • the receiving pocket can be integrated into the functional element so that a part of the material for forming the functional element can be saved, and by the material saved the volume is formed to form the receiving pocket and for receiving the pressure compensation element.
  • the integration of the pressure compensation element in the functional element is an easy to install and cost-effective solution, since no compensation chamber is required with a special closure.
  • the functional element as part of the Mitbetuschigermechanik can be formed for example by a piston movably received in the housing.
  • the piston may for example form a damping piston, which is movably received in the housing and a tank space separated from a pressure chamber in the housing and which cooperates with a closer shaft of the door operator.
  • the damping piston forms the central member of the damping unit of the door operator, by which the rotational movement of the shutter shaft is damped when it is rotated, for example via the shutter spring in rotation. By the damped rotational movement of the closer shaft, for example, the closing movement of the door leaf of the door can be controlled.
  • a check valve and / or a pressure relief valve may be arranged, and the damping piston may further be acted upon by a compression spring, is biased by the damping piston during the opening movement of the door leaf and the rotation of the closer shaft toward the closer shaft and thus an existing on the damping piston pressure roller in constant contact with the cam contour of the closer shaft remains to open the pressure chamber adjacent to the damping piston.
  • the functional element for receiving the pressure compensation element may be formed by an opening piston which is movably received in the housing and is in operative connection between the closer shaft and a closing spring.
  • the opening piston forms a spring support member on which one side of the closing spring is supported, and in the opening piston, a pressure roller can be accommodated rotatably mounted, which rolls on a cam contour of the shutter shaft.
  • the functional element for receiving the pressure compensation element may be formed by a spring adjusting screw, wherein the spring adjusting screw serves for adjusting the spring tension in the closing spring.
  • the closing spring abuts with the end opposite the opening piston against a receiving plate, which is received on the spring adjusting screw via a thread. If the spring adjusting screw is twisted in particular by the outside of the housing of the door operator, then the receiving plate is moved translationally in order to further tension or to relax the closing spring. Consequently, via the spring adjustment screw and the receiving plate, the bias in the closing spring can be adjusted.
  • the spring adjustment screw can be a cylindrical Form body, in which the receiving pocket is accommodated for receiving the pressure compensation element.
  • the functional element for receiving the pressure compensation element may be formed by a bearing housing, through which the closer shaft is rotatably mounted in the housing.
  • the bearing housing can form a solid metallic component of the Matbetuschigermechanik, wherein a part of the material of the massive bearing housing can be removed, which is replaced by the pressure compensation element.
  • the pressure compensation element can be arranged on the outer circumference of the bearing housing and consequently have a ring shape.
  • the bearing housing takes on the pressure compensation element preferably on the outside, and the outside of the bearing housing is located in the tank space for receiving the damping fluid.
  • the pressure compensation element may be formed by a polyester-urethane rubber, a cellular rubber, a cellular soft plastic and / or by a solid plastic.
  • a polyester-urethane rubber is known under the trade name Vulkollan, and has elastic properties similar to natural rubber, but improved chemical and mechanical properties are possible and advantageously usable.
  • An essential feature of a polyester urethane rubber characterized by a compressibility, but no exchange of a medium takes place within the compressible material with a medium outside the compressible material. Consequently, a polyester urethane rubber does not behave like a sponge that soaks in a surrounding medium.
  • the pressure compensation element may have a volume of, for example, 0.2 cubic centimeters to 50 cubic centimeters, preferably from 0.5 cubic centimeters to 10 cubic centimeters and more preferably from 1.2 cubic centimeters to 5 cubic centimeters in the pressureless state.
  • the pressure compensation element can be compressible to half, preferably to a third and more preferably even to a quarter of its volume. If the temperature rises in the door actuator, the damping fluid expands, which is located in the overall mechanism and thus also in the tank space of the housing of the door operator.
  • the receiving pocket in the functional element can have an opening in the direction of the tank space, and when the damping fluid expands, at the same time the pressure compensation element is compressed because it is in fluidic contact with the damping fluid. Only then is an increase in pressure in the damping fluid within the housing of the door operator effectively avoided. If the damping fluid contracts again, the pressure compensation element can expand again and resume the volume which the pressure compensation element has in the pressure-unladen state. Due to the self-contained nature of the compressible material without exchange between the damping fluid and the substance for formation In addition, bubble formation in the damping fluid is effectively avoided in the pressure compensation element.
  • the pressure compensation element may have an annular body with in particular round or preferably rectangular annular cross-section, which is rotationally symmetrical about a central axis of the pressure compensation element. If the pressure compensation element is of annular design, it can preferably be received within a piston in the door actuator, for example in the damping piston or in the opening piston.
  • this may have a rod-shaped or cylindrical body which extends longitudinally along a central axis.
  • a pressure compensation element which is formed from a rod-shaped or cylindrical body is suitable.
  • the annular or rod-shaped or cylindrical body of the pressure compensation element can be adapted in shape and size of the receiving pocket in the functional element.
  • the pressure compensation element can be designed with a slight oversize relative to the receiving pocket, so that it can be self-holding and thus captive integrated in the receiving pocket.
  • FIGS. 1 to 4 each show a door operator 1 with a housing 10 in which a Schotreliigermechanik is added with multiple functional elements. To describe the Materhammechanik and to assign a function to respective functional elements, the function of the door operator 1 is described briefly below.
  • the door operator 1 has a closer shaft 18 which is rotatably received in the housing 10 and which is led out with its ends from the housing 10.
  • a door leaf with a hinge mechanism for actuation by the door actuator 1 can be coupled by the joint mechanism is connected to a led out of the housing 10 end side of the closer shaft 18.
  • the door operator 1 shown is designed as a mechanical-hydraulic door closer and has a closing spring 19 which acts via an opening piston 12 and an opening piston 12 arranged pressure roller 27 against a cam contour 28 which forms a heart-shaped cam and the approximately in the central region on the Peripheral surface of the closer shaft 18 is applied. If the closer shaft 18 is rotated by the hinge mechanism via an opening of the door leaf, the opening piston 12 is displaced in the direction of the closing spring 19 by the pressure roller 27 rolling on the cam contour 28. As a result, the closing spring 19 can be compressed, so that energy is stored for later closing of the door leaf in the closing spring 19.
  • a spring adjusting screw 13 is shown, on which a receiving plate 29 is received via a thread. If the spring adjusting screw 13 is rotated from the outside with a corresponding tool by an operator, the rear end side of the closing spring 19 presses against the receiving plate 29, and the translational displacement of the receiving plate 29 is without Displacement of the opening piston 12, the bias in the closer spring 19 changed.
  • the spring adjustment screw 13 is rotatably received in a locking screw 30, wherein on both end sides of the housing 10 in each case a closure screw 30 is provided to close the housing 10 pressure-tight.
  • the Matbetuschigermechanik further comprises a damping piston 11 which is received longitudinally movable in the housing 10 and also cooperates via a further pressure roller 31 with the cam contour 28 on the closer shaft 18.
  • the damping piston 11 separates a pressure chamber 17 from a tank space 16, and the tank space 16 is formed both by the space in which the shutter shaft 18 is received, and formed by the space in which the shutter spring 19 is received.
  • the damping fluid located in the tank space is generally not under pressure, and the amount of damping fluid in the tank space 16 forms a kind of reservoir for the damping fluid. If the door operator 1 heats up, the pressure of the damping fluid in the tank space 16 may increase inadmissibly, which may lead to destruction of the door operator 1.
  • a pressure compensation element 15 is provided, which is received integrated in various functional elements of the door operator 1, which hereinafter with reference to the FIGS. 1 to 4 be described in more detail.
  • FIG. 1 shows an embodiment of the door operator 1 with a pressure compensation element 15 integrated in a functional element 11, which is formed by the damping piston 11.
  • the pressure compensation element 15 shown has an annular body 24 with an approximately rectangular circumferential cross-sectional area and is in one Receiving pocket 21 inserted within the damping piston 11.
  • the inner surface of the pressure compensation element 15 communicates with the damping fluid in the tank space 16. If the damping fluid expands, the volume of the pressure compensation element 15 is reduced, whereby an impermissible pressure increase in the housing 10 of the door actuator 1 is avoided.
  • FIG. 2 shows an embodiment of the door operator 1 with a functional element 12 in the form of the opening piston 12, in which the pressure compensation element 15 is integrated.
  • the pressure compensation element 15 shown also has an annular body 24 with an approximately rectangular circumferential cross-sectional area.
  • the receiving pocket 22 introduced into the opening piston 12 for receiving the pressure compensation element 15 has an opening directed in the direction of the closing spring 19 so that a side face of the pressure compensation element 15 can interact with the damping fluid in the tank space 16.
  • a pressure plate which avoids contact of the pressure compensation element 15 with the end of the closing spring 19.
  • FIG. 3 shows a further embodiment of a door operator 1 with a functional element 13, which is designed in the form of a spring adjustment screw 13 and serves to receive the pressure compensation element 15.
  • the pressure compensation element 15 has a cylindrical body 25 and is received in an integrated likewise cylindrical receiving pocket 23 within the spring adjusting screw 13.
  • the open end side of the pressure compensation element 15 interact with the damping fluid, and increases the pressure in the damping fluid, the pressure compensation element 15 can shorten in its elongated direction, so that this formally into the receiving pocket 23 is pressed. If the pressure in the damping fluid decreases again, the pressure compensation element 15 expands due to its inherent elasticity.
  • FIG. 4 shows an embodiment of a door operator 1 with a closer shaft 18 which is mounted in two bearing housings 14 and form further functional elements 14 of the Matbetuschigermechanik.
  • the bearing housing 14 have annular recesses in which the pressure compensation elements 15 are accommodated. These can thus communicate with the damping fluid in the tank space 16, in which the closer shaft 18 is located.
  • FIG. 5 shows an embodiment of a pressure compensation element 15 with an annular body 24 which has a rectangular cross-sectional area and extends around a central axis 20 around.
  • a pressure compensation element 15 with the shape shown can be accommodated, for example, in the damping piston 11 or in the opening piston 12.
  • FIG. 6 shows an embodiment of a pressure compensation element 15 having a cylindrical shape with a cylindrical body 25 which extends around a central axis 20 around.
  • a pressure compensation element 15 of the cylindrical shape shown can be received, for example, in a spring adjustment screw 13.
  • the shape of the pressure compensation element 15 may also have a cuboid, a trapezoid or another form in order to form part of it without changing the outer shape of the functional element.
  • the shape of the pressure compensation element can be adapted to the shape of the receiving space on or in the functional element, without that the functional element occupies an enlarged volume while receiving the pressure compensation element.
  • door actuators 1 may be provided which are equipped with a plurality of pressure compensation elements 15 within the housing 10.
  • pressure compensation elements 15 can be accommodated in a door actuator 1 in the damping piston 11 and / or in the opening piston 12 and / or in the spring adjustment screw 13 and / or in the bearing housings 14 as respective functional elements 11, 12, 13 and 14, pressure compensation elements 15 can be accommodated.
  • the effective compensation volume increases without reducing the volume available for filling the housing 10 with hydraulic fluid.
EP14001918.3A 2013-06-12 2014-06-03 Türbetätiger mit einem Druckausgleichselement Withdrawn EP2840212A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310106087 DE102013106087A1 (de) 2013-06-12 2013-06-12 Türbetätiger mit einem Druckausgleichselement

Publications (1)

Publication Number Publication Date
EP2840212A1 true EP2840212A1 (de) 2015-02-25

Family

ID=50927878

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Application Number Title Priority Date Filing Date
EP14001918.3A Withdrawn EP2840212A1 (de) 2013-06-12 2014-06-03 Türbetätiger mit einem Druckausgleichselement

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EP (1) EP2840212A1 (zh)
CN (1) CN104234562A (zh)
DE (1) DE102013106087A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018122210A1 (en) 2016-12-27 2018-07-05 Locinox Hydraulically damped actuator and self-closing hinge comprising the actuator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024121A1 (de) 1990-07-30 1991-10-24 Dorma Gmbh & Co Kg Schliesselement
DE4101640A1 (de) 1991-01-22 1992-07-23 Dorma Gmbh & Co Kg Schliesselement
WO2004095982A1 (en) * 2003-04-29 2004-11-11 Moonju Hardware Co. ,Ltd Door damper
DE102005013413A1 (de) * 2005-03-23 2006-10-05 Stabilus Gmbh Gasfeder
WO2007129157A2 (en) * 2006-05-05 2007-11-15 Harn Marketing Sdn. Bhd Fluid damper
DE202012100497U1 (de) 2012-02-14 2012-03-16 Dorma Gmbh + Co. Kg Türschließer oder Türantrieb
JP2012241439A (ja) * 2011-05-20 2012-12-10 Ryobi Ltd ドアクローザ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024121A1 (de) 1990-07-30 1991-10-24 Dorma Gmbh & Co Kg Schliesselement
DE4101640A1 (de) 1991-01-22 1992-07-23 Dorma Gmbh & Co Kg Schliesselement
WO2004095982A1 (en) * 2003-04-29 2004-11-11 Moonju Hardware Co. ,Ltd Door damper
DE102005013413A1 (de) * 2005-03-23 2006-10-05 Stabilus Gmbh Gasfeder
WO2007129157A2 (en) * 2006-05-05 2007-11-15 Harn Marketing Sdn. Bhd Fluid damper
JP2012241439A (ja) * 2011-05-20 2012-12-10 Ryobi Ltd ドアクローザ
DE202012100497U1 (de) 2012-02-14 2012-03-16 Dorma Gmbh + Co. Kg Türschließer oder Türantrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018122210A1 (en) 2016-12-27 2018-07-05 Locinox Hydraulically damped actuator and self-closing hinge comprising the actuator

Also Published As

Publication number Publication date
CN104234562A (zh) 2014-12-24
DE102013106087A1 (de) 2014-12-18

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