EP3401485A1 - Türbetätiger - Google Patents

Türbetätiger Download PDF

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Publication number
EP3401485A1
EP3401485A1 EP17170898.5A EP17170898A EP3401485A1 EP 3401485 A1 EP3401485 A1 EP 3401485A1 EP 17170898 A EP17170898 A EP 17170898A EP 3401485 A1 EP3401485 A1 EP 3401485A1
Authority
EP
European Patent Office
Prior art keywords
piston unit
eccentric cam
section
inner piston
door actuator
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.)
Granted
Application number
EP17170898.5A
Other languages
English (en)
French (fr)
Other versions
EP3401485B1 (de
Inventor
Jackson Leong
Say Kiong THO
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.)
Dormakaba Deutschland GmbH
Original Assignee
Dormakaba 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 Dormakaba Deutschland GmbH filed Critical Dormakaba Deutschland GmbH
Priority to EP17170898.5A priority Critical patent/EP3401485B1/de
Priority to ES17170898T priority patent/ES2808278T3/es
Priority to CN201810156901.8A priority patent/CN108868428B/zh
Publication of EP3401485A1 publication Critical patent/EP3401485A1/de
Application granted granted Critical
Publication of EP3401485B1 publication Critical patent/EP3401485B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
    • E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • 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
    • E05Y2800/20—Combinations of elements
    • E05Y2800/21—Combinations of elements of identical elements, e.g. of identical compression springs
    • 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
    • E05Y2800/20—Combinations of elements
    • E05Y2800/244—Combinations of elements arranged in serial relationship

Definitions

  • the invention relates to a door actuator for a door leaf.
  • Door actuators for example door closers, are mountable to door leaves for supporting the same.
  • a door actuator enables the door to be pivotally opened or closed.
  • EP 2 617 925 A1 discloses a patch fitting for a glass door.
  • the patch fitting includes a mount for being mounted on a floor, a shaft connected with the mount, a clamping seat pivotally connected with the shaft, and a piston unit installed inside the clamping seat.
  • the clamping seat will turn along with the sweeping movement of the glass door about the shaft and the piston unit will be pushed by an eccentric cam of the shaft to press the hydraulic oil contained in the clamping seat so as to provide a damping resistance in response to the sweeping movement of the glass door.
  • a problem to be solved by the present disclosure is to improve user safety of a door actuator.
  • a door actuator particularly a hydraulic door closer, for a door leaf, comprises a housing for mounting to the door leaf.
  • the door actuator comprises a shaft rotatably supported in the housing for actuating the door leaf.
  • the shaft includes an eccentric cam.
  • the door actuator comprises a piston assembly, particularly a hybrid piston assembly.
  • the piston assembly includes an outer piston unit reciprocatingly supported in the housing to follow the eccentric cam, and an inner piston unit reciprocatingly supported in the outer piston unit to follow the eccentric cam.
  • the door actuator includes two piston units following the eccentric cam. This may allow to more precisely follow the eccentric cam, and, based on an arrangement of the piston units, to reduce or prevent backlash or free-play of the eccentric cam with respect to the piston units.
  • the housing may be a configured as a, particularly multi-piece, clamping seat for the door leaf.
  • the inner piston unit and/or the outer piston unit may directly follow or contact the eccentric cam.
  • the inner piston unit may include an inner piston and the outer piston unit may include an outer piston.
  • the inner piston unit may be movable in the outer piston unit along a longitudinal axis of the piston assembly, and/or the outer piston unit may be movable in the housing along the longitudinal axis of the piston assembly.
  • the inner piston unit may be reciprocatingly arranged in a hole, preferably a throughhole of the outer piston unit.
  • the hole may be arranged in an end body section of an outer piston of the outer piston unit.
  • the shaft may be configured for mounting to a door mount, for example a top door mount or a floor door mount.
  • the inner piston unit is biased, particularly spring-loaded, to contact the eccentric cam.
  • the outer piston unit is biased, particularly spring-loaded, to contact the eccentric cam.
  • the inner piston unit is biased to contact the eccentric cam irrespective of a rotational position of the eccentric cam to prevent backlash or free-play of the eccentric cam with respect to the inner piston unit and/or the piston assembly.
  • the outer piston is biased to contact the eccentric cam irrespective of a rotational position of the eccentric cam to prevent backlash or free-play of the eccentric cam with respect to the outer piston unit and/or the piston assembly.
  • the inner piston unit includes a contact member for contacting the eccentric cam.
  • the outer piston unit may include a contact member for contacting the eccentric cam.
  • the contact member of the outer piston unit contacts the eccentric cam separate from the contact member of the inner piston unit.
  • the contact member(s) may be configured as cam follower(s).
  • the contact member of the inner piston unit and/or the outer piston unit is a bolt or a roller. Additionally or alternatively, the contact member of the inner piston unit and the contact member of the outer piston unit are arranged on opposite sides of the eccentric cam.
  • the outer piston unit and the inner piston unit contact or follow the eccentric cam on opposite sides of the eccentric cam. Additionally or alternatively, the outer piston unit and the inner piston unit contact or follow the eccentric cam at different sections of the eccentric cam. This may further help to reduce free-play or backlash between the piston assembly and the eccentric cam.
  • the inner piston unit is arranged in a rotationally fixed manner in the outer piston unit so that, preferably, a longitudinal axis of a contact member of the inner piston unit contacting the eccentric cam extends parallel to the shaft. This may reduce wear of the piston assembly.
  • an inner piston of the inner piston unit includes a first, particularly cylindrical, body section and a second, particularly cylindrical, body section.
  • a central longitudinal axis of the first body section extends displaced from, particularly parallel to, a central longitudinal axis of the second body section.
  • the second body section longitudinally extends eccentric with respect to the first body section. The eccentric arrangement provides a reliable solution for rotationally fixing the inner piston unit in the outer piston unit. Additionally, it may be easy to manufacture and, thus, cost efficient.
  • an outer piston of the outer piston unit includes a hole for supporting the inner piston unit.
  • the hole has a first hole section and a second hole section.
  • a central longitudinal axis of the first hole section extends displaced from, particularly parallel to, a central longitudinal axis of the second hole section. Additionally or alternatively, the second hole section longitudinally extends eccentric with respect to the first hole section.
  • the first hole section matches with the first body section, and/or the second hole section matches with the second body section.
  • an inner piston of the inner piston unit includes an outer circumferential face contacting an outer piston of the outer piston unit.
  • the outer circumferential face includes at least one flat or planar section, and/or has a shape different from a solid of revolution.
  • an outer piston of the outer piston unit includes an inner circumferential face contacting an inner piston of the inner piston unit.
  • the inner circumferential face includes at least one flat or planar section, and/or has a shape different from a solid of revolution.
  • the inner circumferential face may be defined by a hole of the outer piston. This may also provide a reliable solution for rotationally fixing the inner piston unit in the outer piston unit.
  • an inner piston of the inner piston unit and a hole of an outer piston of the outer piston unit may be engaged with each other, for example, by a spline or a key connection.
  • an outer piston of the outer piston unit includes a first, particularly cylindrical, end body section reciprocatingly supporting the inner piston unit, and a second, particularly cylindrical, end body section opposite of the first end body section with respect to the eccentric cam.
  • the second end body section may hold a contact member for contacting the eccentric cam and/or abuts against a biasing member, for instance a spring member, for biasing the outer piston unit to contact the eccentric cam.
  • the outer piston unit may include an intermediate body section interconnecting the first end body section and the second end body section.
  • the intermediate body section may have a plate shape and/or may include a throughhole for the shaft.
  • the door actuator further comprises a biasing member, for example a spring member, supported at an end cap of the housing and biasing the inner piston unit.
  • the biasing member may bias the inner piston unit to contact or follow the eccentric cam.
  • the inner piston unit includes a pressure relief valve, a hydraulic oil passage extending through an inner piston of the inner piston unit and/or a seal, particularly a sealing ring.
  • the seal seals against the outer piston unit and may be particularly arranged in an outer circumferential groove of an inner piston of the inner piston unit.
  • the housing includes a hydraulic oil compartment formed as a blind hole sealed or closed by an end cap, and/or accommodating the piston assembly.
  • the hydraulic oil compartment is separated into a first section and a second section by the piston assembly.
  • the first section and the second section are fluidly connected to each other.
  • the inner piston unit, the outer piston unit and/or the piston assembly includes a hydraulic oil passage.
  • a first biasing member for example a spring member, biasing the inner piston unit is disposed in the first section and/or a second biasing member, for example a spring member, biasing the outer piston unit is disposed in the second section.
  • Fig. 1 shows an exemplary door actuator 10.
  • the door actuator 10 is configured as a hydraulic door closer.
  • the door actuator 10 includes a housing 12, a shaft or pinion 14, a piston assembly 16, at least one first biasing member 18, and at least one second biasing member 20.
  • the housing 12 accommodates the shaft 14, the piston assembly 16, the at least one first biasing member 18 and the at least one second biasing member 20.
  • the housing 12 is connectable to a door leaf (not shown), particularly a glass door leaf.
  • the housing 12 may be clamped to the door leaf.
  • the housing 12 serves as a clamping seat for the door leaf.
  • the shaft 14, particularly an outer end 26 of the shaft 14, is mountable to a door mount (not shown), for example a floor mount or a top mount. When the door leaf is sweeping to open or close, the housing 12 turns along with the sweeping movement of the door leaf about the shaft 14.
  • the housing 12 includes a longitudinal blind hole forming a hydraulic oil compartment 22 filled with hydraulic oil.
  • the hydraulic oil compartment 22 is divided into a first section 22A and a second section 22B by the piston assembly 16.
  • the first section 22A serves as a dampening section for dampening a movement of the door leaf.
  • the second section 22B serves as an opening section to allow opening the door leaf.
  • the hydraulic oil compartment 22 is closed and sealed by a replaceable end cap 24.
  • the piston assembly 16 is positioned in the hydraulic oil compartment 22.
  • the at least one first biasing member 18 is positioned in the first section 22A of the hydraulic oil compartment 22.
  • the at least one second biasing member is positioned in the second section 22B of the hydraulic oil compartment 22.
  • the biasing members 18, 20 are configured as spring members, particularly coil springs.
  • the shaft 14 is rotatably supported in the housing 12.
  • the outer end 26 of the shaft 14 extends outwards of the housing 12.
  • the outer end 26 is configured for mounting to above described door mount.
  • the shaft 14 includes an eccentric cam 28 for actuating the piston assembly 16.
  • the eccentric cam 28 pushes the piston assembly 16 in a direction to the second section 22B of the hydraulic oil compartment 22.
  • the opening motion of the door leaf is damped by hydraulic oil flowing from the second section 22B through hydraulic oil passages in the piston assembly 16 to the first section 22A of the hydraulic oil compartment 22.
  • the at least one second biasing member 22 functions to return the door leaf into a closed position.
  • the piston assembly 16 is configured as a hybrid piston assembly including an outer piston unit 30 and an inner piston unit 32.
  • the outer piston unit 30 is reciprocatingly supported in the housing 12, particularly the hydraulic oil compartment 22.
  • the outer piston unit 30 is movable with respect to the housing 12 in a longitudinal direction of the hydraulic oil compartment 22.
  • the piston assembly 16 is shown in more detail in Figs. 2 and 3 .
  • the outer piston unit 30 includes an outer piston 34 and a contact member 36.
  • the outer piston 34 includes a first end body section 38, an intermediate body section 40, and a second end body section 42.
  • the first end body section 38 includes a bore or hole (throughhole) 44 for reciprocatingly supporting the inner piston unit 32.
  • the inner piston unit 32 is movable with respect to the outer piston unit 30 in a longitudinal direction of the piston assembly 16.
  • the first end body section 38 may have a cylindrical outer shape.
  • the intermediate body section 40 interconnects the first end body section 38 and the second end section 42.
  • the intermediate body section 40 provides space for the shaft 14 and the eccentric cam 28 (see Fig. 1 ).
  • the intermediate body section 40 includes an elongated throughhole 46.
  • the throughhole 46 is elongated in a longitudinal direction of the outer piston unit 30. In a mounted state, the shaft 14 passes through the throughhole 46.
  • the intermediate body section 40 may have plate shape.
  • the second end body section 42 supports the contact member 36.
  • the second end body section 40 includes an end face 48 and a hydraulic oil passage 49.
  • the at least one second biasing member 20 contacts the end face 48.
  • the hydraulic oil passage 49 extends through the second end body section 42.
  • the second end body section 42 may have a cylindrical outer shape.
  • the contact member 36 is configured as a roller.
  • the contact member 36 is rotatably supported by a bolt 50 secured to the second end body section 42.
  • the contact member 36 contacts the eccentric cam 28 (see Fig. 1 ) to follow a contour of the eccentric cam 28.
  • the contact member 36 may have another configuration.
  • the contact member 36 may be configured as a rotationally fixed bolt.
  • the inner piston unit 32 includes an inner piston 52 and a contact member 54.
  • the inner piston unit 32 is movable along a longitudinal direction of the hole 44 of the outer piston 34.
  • the inner piston unit 32 is biased by the at least one first biasing member 18 in a direction to the second end body section 42 of the outer piston 34.
  • the contact member 54 is configured as a bolt. In other embodiments, the contact member 54 may be a roller.
  • the at least one first biasing member 18 biases the inner piston unit 32 so that the contact member 54 contacts the eccentric cam 28 irrespective of a rotational position of the eccentric cam 28 (and the shaft 14) about a longitudinal axis of the shaft 14.
  • the at least one second biasing member 20 biases the outer piston unit 30 so that the contact member 36 contacts the eccentric cam 28 irrespective of a rotational position of the eccentric cam 28 (and the shaft 14) about a longitudinal axis of the shaft 14.
  • the inner piston unit 32 is arranged in a rotationally fixed manner in the hole 44 to maintain an orientational relationship between the contact member 54 and the eccentric cam 28 (the drive shaft 14). Particularly, an orientational relationship is maintained in which a longitudinal axis of the contact member 54 extends parallel to the drive shaft 14 (see Fig. 1 ). Additionally, this may reduce wear of the eccentric cam 28 and the inner piston unit 32.
  • the inner piston unit 32 is rotationally fixed in the hole 44 by an eccentric arrangement of sections of the piston 32 and the hole 44.
  • the sections are shown in Figs. 3 and 4 .
  • Fig. 5 schematically indicates the relevant sections of the inner piston 52 and the hole 44.
  • the inner piston 52 includes a first body section 56 and a second body section 58.
  • the first body section 56 and the second body section 58 have a cylindrical shape.
  • a central longitudinal axis of the first body section 56 extends spaced apart and parallel to a central longitudinal axis of the second body section 58 (see Fig. 5 ).
  • the second body section 58 extends eccentrically with respect to the first body section 56.
  • the hole 44 includes a first hole section 60 and a second hole section 62, which extends eccentrically with respect to the first hole section 60.
  • the first body section 56 is positioned in the first hole section 60
  • the second body section 58 is positioned in the second hole section 62.
  • the eccentric arrangement of the sections 56-62 rotationally fixes the inner piston 52 in the hole 44 with respect to a longitudinal axis of the inner piston 52.
  • a configuration of the inner piston and the hole may be adapted in any other fashion to rotationally fix the inner piston unit in the hole.
  • outer circumferential faces of the inner piston and the hole may include flat or planar sections and/or the inner piston and the hole may have a shape different from a solid of revolution.
  • the inner piston and the hole may be engaged with each other.
  • FIG. 6 shows a conventional arrangement with a single piston, i.e. without a hybrid piston assembly as suggested herein.
  • Fig. 7 shows a cut view of the door actuator including an inner piston unit and an outer piston unit according to the present disclosure.
  • a conventional system may include a piston 100 including a contact member 102.
  • the piston 100 is biased to contact an eccentric cam 104 on one side of the eccentric cam 104 only.
  • the conventional system does not include a counter-roller mechanism which helps to reduce backlash or free-play during door opening or closing.
  • This backlash or free play may impose a safety issue to an end user especially in the event of an external force acting on the door leaf. For example, the external force may be a gust of wind. Due to the gap d, the door could slam onto the end user during door opening or closing.
  • the door actuator 10 according to the present disclosure solves above issue.
  • the piston assembly 16 of the door actuator 10 includes the inner piston unit 32 and the outer piston unit 30. Both the inner piston unit 32 and the outer piston unit 30 are biased, particularly spring-loaded, to contact the eccentric cam 28. Additionally, the inner piston unit 32 and the outer piston unit 30 contact the eccentric cam 28 on opposite sides of the eccentric cam 28. Therefore, there is no gap between the eccentric cam 28 and the piston assembly 16. Accordingly, backlash or free-play is efficiently reduced or prevented. For example, in the event of a gust of wind, the eccentric cam 28 directly contacts the inner piston 52, pressure builds up, and a resulting dampening force resists the external force exerted on the door leaf by the gust of wind.
  • Fig. 7 further shows an exemplary inner configuration of the inner piston unit 32.
  • the piston unit 32 includes a hydraulic oil passage 64 for transferring hydraulic oil between the first section 22A and the second section 22B of the hydraulic oil compartment 22 (see Fig. 1 ) for dampening a movement of the door leaf.
  • the inner piston unit 32 includes a pressure relief valve 66 arranged in the hydraulic oil passage 64.
  • the purpose of the pressure relief valve 26 is to ensure that an additional oil leak path is generated when a sudden pressure surge builds-up in the door actuator 10. This may reduce the inner pressure in the door actuator 10 and may prevent or reduce deterioration of seals included in the door actuator 10.
  • the inner piston unit 32 may include a seal 68, particularly a sealing ring, disposed in an outer circumferential groove of the inner piston 52. The seal 68 seals against the outer piston unit 30.

Landscapes

  • Actuator (AREA)
  • Transmission Devices (AREA)
  • Fluid-Damping Devices (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
EP17170898.5A 2017-05-12 2017-05-12 Türbetätiger Active EP3401485B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17170898.5A EP3401485B1 (de) 2017-05-12 2017-05-12 Türbetätiger
ES17170898T ES2808278T3 (es) 2017-05-12 2017-05-12 Accionador de puerta
CN201810156901.8A CN108868428B (zh) 2017-05-12 2018-02-24 门致动器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17170898.5A EP3401485B1 (de) 2017-05-12 2017-05-12 Türbetätiger

Publications (2)

Publication Number Publication Date
EP3401485A1 true EP3401485A1 (de) 2018-11-14
EP3401485B1 EP3401485B1 (de) 2020-07-01

Family

ID=58707417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17170898.5A Active EP3401485B1 (de) 2017-05-12 2017-05-12 Türbetätiger

Country Status (3)

Country Link
EP (1) EP3401485B1 (de)
CN (1) CN108868428B (de)
ES (1) ES2808278T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3715568A1 (de) * 2019-03-29 2020-09-30 Sun-Q Door Controls Limited Nockentürschliesser
JP2020193485A (ja) * 2019-05-28 2020-12-03 リョービ株式会社 ドアクローザ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2617925A1 (de) 2012-01-19 2013-07-24 Leado Door Controls Ltd. Anschlussplatte mit Verschlussfunktion
EP2738332A1 (de) * 2012-11-28 2014-06-04 DORMA GmbH + Co. KG Türbetätiger
US20140290144A1 (en) * 2011-12-02 2014-10-02 Dorma Gmbh + Co. Kg Door actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI345607B (en) * 2008-06-27 2011-07-21 Taiwan Fu Hsing Ind Co Ltd Automatic door closer
DE102010022049B4 (de) * 2009-12-01 2022-08-25 Dormakaba Deutschland Gmbh Türschließer mit Freilauffunktion
EP3029252A1 (de) * 2014-12-05 2016-06-08 DORMA Deutschland GmbH Bodentürschliesser
EP3029253A1 (de) * 2014-12-05 2016-06-08 DORMA Deutschland GmbH Bodentürschliesser
CN205400376U (zh) * 2016-02-24 2016-07-27 浙江敦豪斯五金工业有限公司 闭门器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140290144A1 (en) * 2011-12-02 2014-10-02 Dorma Gmbh + Co. Kg Door actuator
EP2617925A1 (de) 2012-01-19 2013-07-24 Leado Door Controls Ltd. Anschlussplatte mit Verschlussfunktion
EP2738332A1 (de) * 2012-11-28 2014-06-04 DORMA GmbH + Co. KG Türbetätiger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3715568A1 (de) * 2019-03-29 2020-09-30 Sun-Q Door Controls Limited Nockentürschliesser
JP2020193485A (ja) * 2019-05-28 2020-12-03 リョービ株式会社 ドアクローザ
JP7177003B2 (ja) 2019-05-28 2022-11-22 リョービ株式会社 ドアクローザ

Also Published As

Publication number Publication date
EP3401485B1 (de) 2020-07-01
ES2808278T3 (es) 2021-02-26
CN108868428B (zh) 2021-10-19
CN108868428A (zh) 2018-11-23

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