EP0663503A1 - Türschliesser - Google Patents

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Publication number
EP0663503A1
EP0663503A1 EP94300258A EP94300258A EP0663503A1 EP 0663503 A1 EP0663503 A1 EP 0663503A1 EP 94300258 A EP94300258 A EP 94300258A EP 94300258 A EP94300258 A EP 94300258A EP 0663503 A1 EP0663503 A1 EP 0663503A1
Authority
EP
European Patent Office
Prior art keywords
door
linkage arm
door closer
piston rod
drive lever
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Withdrawn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
EP94300258A
Other languages
English (en)
French (fr)
Inventor
Bo Sang Seo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP94300258A priority Critical patent/EP0663503A1/de
Publication of EP0663503A1 publication Critical patent/EP0663503A1/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Withdrawn legal-status Critical Current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
    • E05F3/02—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with pneumatic piston brakes
    • 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
    • E05F3/221—Mechanical power-locks, e.g. for holding the wing open or for free-moving zones
    • 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
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/47—Springs
    • E05Y2201/478—Gas 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
    • 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 present invention relates to a door closer. Specifically but not exclusively, it relates to a closure using a pneumatic cylinder in which a door may be latched in its open position (for example when the door is opened more than 90°). It further relates, in the preferred embodiment, to a closer which increases the speed of closure as the door moves towards the closed position.
  • a conventional door closer comprises a linkage arm which is either loaded by a spring or attached to a pinion gear assembled to a rack portion of a piston element, so that when the door is closed the pinion gear is rotated by the piston element.
  • the closing speed of the door is controlled by rotation of the linkage arm.
  • Another type of known closer has a pneumatic, hydraulic or spring-loaded cylinder in which a piston rod is directly connected to the door or the door frame.
  • This type of door closer is shown, for example, in US-A-4,190,926 and US-A-4,817,238.
  • Such closers do not have the function of latching the door in the fully open position, when the door is opened beyond a predetermined limit. Also, such door closers do not have the function of increasing the closing speed of the door as the closure is completed.
  • An object of the present invention is to provide a door closer constructed such that the door may be latched open when it is pushed open beyond a certain angle.
  • a further object is for at least the preferred embodiment to increase the closing speed of the door as the door draws near the door frame while the door is being closed.
  • a door closer characterised by a housing arranged to be mounted to a door, a first linkage arm extending from the housing, and a second linkage arm one end of which is articulated to the first linkage arm and other end of which is connected to a bracket arranged to be mounted to a door frame; and wherein the door closer further comprises a cylinder within the housing having a piston rod which co-operates with a drive lever.
  • the upper end of the aforesaid drive shaft has the drive lever mounted thereto, one end of the first linkage arm being fixedly connected to the drive shaft.
  • the drive lever has a concave recess formed at its end, into which the roller of the piston rod can be engaged.
  • a piston having a bleed bore is slidably mounted in the pneumatic cylinder, the piston rod is attached to the piston, and a passage having a slightly larger length than that of the piston is formed inside the front end of the cylinder.
  • Figure 1 shows that one side of a door 10 is connected by a hinge 12 to a door frame 14, and that the other side of the door has a door handle 18, by the operation of which a latch bolt 16 is brought into operation.
  • the door 10 is closed.
  • a door closer 20 according to the preferred embodiment of the present invention comprises a housing 22 mounted to the door 10, from which a first linkage arm 24 and a second linkage arm 26 articulated to the first linkage arm 24 extend.
  • the end of the second linkage arm 26 is connected to a bracket 28 which is mounted to the door frame 14.
  • Figure 1 to Figure 5 illustrate the operation of a door equipped with such a door closer 20.
  • FIG 1 illustrates the door in the closed position against the door frame 14 with the door 10 latched to the door frame 14 by the latch bolt 16 which may be opened by the door handle 18.
  • the door 10 is opened by turning the handle 18 which retracts the latch bolt 16.
  • Figure 2 and Figure 3 respectively show the door 10 opened at angles of 45° and 90° with respect to the door frame 14.
  • FIG 4 shows the door 10 opened at an angle of more than 90°. In this position it may be latched by the door closure: details will be described later.
  • Figure 5 shows the door 10 drawing near the door frame 14 in the almost completely closed state.
  • the door 10 can be completely and securely closed after overcoming the obstacle represented by the edge of the latch bolt 16 since the closing speed of the door is increased by the door closure of the preferred embodiment: details will be explained later.
  • Figure 6 and Figure 7 show that the preferred door closure 20 comprises a housing 22 having an extended head portion 30.
  • a pneumatic cylinder 34 from which a piston rod 32 extends.
  • the end of the piston rod 32 extends into the head portion 30.
  • a slidable-mounted piston 38 having a bleed bore 36 which can be closed by means of a washer 35.
  • a yoke 40 is mounted and to its shaft 42, a roller 44 is rotatably mounted.
  • a U-shaped bracket 46 is mounted in the extended head portion 30.
  • a drive shaft 48 is mounted at a position offset from the route of the piston rod 32, and its upper end 50 extends outwardly from the head portion 30; one end of the first linkage arm 24 is fixedly connected to the upper end.
  • Fixedly mounted to the middle of the drive shaft 48 is a drive lever 54, its rotation range being restricted by stops 52a, 52b mounted at both sides of the bracket 46.
  • the side of the drive lever 54 is contacted by the roller 44 of the piston rod 32, and at its upper end a concave recess 56 is formed.
  • a passage 58 is provided which is slightly longer than the piston 38.
  • the passage 58 is formed at one side of the cylinder 34, towards the front end.
  • the first linkage arm 24 rotates counterclockwise about the central axis of the drive shaft 48 when the door 10 is opened.
  • the drive lever 54 is rotated counterclockwise and thus the piston rod 32 abutted by the roller 44 is forced to retract against the pressure of compressed air within the pneumatic cylinder ( Figure 8 and Figure 9).
  • the drive lever 54 When the door is to be opened at a predetermined angle of opening, for example, more than 90° (desirably about 100°), it is sometimes desirable to latch the door in this position.
  • the drive lever 54 When the door 10 is opened to an angle of more than 90° as shown in Figure 4, the drive lever 54 is rotated from the position shown in Figure 9 to the position shown in Figure 10.
  • the roller 44 of the piston rod 32 which abuts the side of the drive lever 54 engages into the concave recess 56 formed at the distal end of the drive lever 54. In this position, movement of the piston rod and of the drive lever is restricted. Accordingly, the door 10 remains latched open so long as an external closing force is not applied to it.
  • the door 10 is closed by the power of the pneumatic cylinder when an external closing force is applied.
  • a closing force applied to the door causes the roller 44 of the piston rod 32 to be removed from the concave recess 56 of the drive lever 54, and to move down to abut the side of the drive lever 54.
  • the piston rod 32 begins to extend by pressure within the pneumatic cylinder 34, thereby rotating the drive lever 54 clockwise. Accordingly, the door 10 is gradually closed while the first linkage arm 24 is rotated clockwise.
  • the pneumatic cylinder 34 is slightly modified in the preferred embodiment by the provision of the passage 58 at the inner front end of the cylinder 34.
  • This passage is slightly longer than the piston 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP94300258A 1994-01-14 1994-01-14 Türschliesser Withdrawn EP0663503A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94300258A EP0663503A1 (de) 1994-01-14 1994-01-14 Türschliesser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94300258A EP0663503A1 (de) 1994-01-14 1994-01-14 Türschliesser

Publications (1)

Publication Number Publication Date
EP0663503A1 true EP0663503A1 (de) 1995-07-19

Family

ID=8217529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94300258A Withdrawn EP0663503A1 (de) 1994-01-14 1994-01-14 Türschliesser

Country Status (1)

Country Link
EP (1) EP0663503A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026356A1 (de) * 2004-05-26 2005-12-29 Stabilus Gmbh Zugfederanordnung
US7444713B2 (en) * 2005-11-30 2008-11-04 Dorma Gmbh + Co. Kg Closer arm assembly for an automatic door closer
CN104912419A (zh) * 2015-06-11 2015-09-16 希美克(广州)实业有限公司 一种速度可调的关门器
IT201600081638A1 (it) * 2016-08-03 2018-02-03 Mypro Res S R L Dispositivo di smorzamento.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2303934A1 (de) * 1972-01-26 1973-08-02 Stanley Works Tuerfeststeller mit gesteuerter ausloesung der schliessbewegung
DE2313513A1 (de) * 1970-09-10 1974-10-03 Eaton Gmbh Tuerschliesser
GB1512016A (en) * 1975-05-23 1978-05-24 Barber C Release mechanisms for use with automatic door closers
EP0409445A1 (de) * 1989-07-21 1991-01-23 Ryobi Ltd. Türschliesser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2313513A1 (de) * 1970-09-10 1974-10-03 Eaton Gmbh Tuerschliesser
DE2303934A1 (de) * 1972-01-26 1973-08-02 Stanley Works Tuerfeststeller mit gesteuerter ausloesung der schliessbewegung
GB1512016A (en) * 1975-05-23 1978-05-24 Barber C Release mechanisms for use with automatic door closers
EP0409445A1 (de) * 1989-07-21 1991-01-23 Ryobi Ltd. Türschliesser

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026356A1 (de) * 2004-05-26 2005-12-29 Stabilus Gmbh Zugfederanordnung
DE102004026356B4 (de) * 2004-05-26 2008-07-31 Stabilus Gmbh Zugfederanordnung
US7444713B2 (en) * 2005-11-30 2008-11-04 Dorma Gmbh + Co. Kg Closer arm assembly for an automatic door closer
US7721386B2 (en) 2005-11-30 2010-05-25 Dorma Gmbh + Co. Kg Closer arm assembly for an automatic door closer
CN104912419A (zh) * 2015-06-11 2015-09-16 希美克(广州)实业有限公司 一种速度可调的关门器
IT201600081638A1 (it) * 2016-08-03 2018-02-03 Mypro Res S R L Dispositivo di smorzamento.
WO2018025105A1 (en) * 2016-08-03 2018-02-08 Mypro Research S.R.L. Damping device

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Effective date: 19960120