DE102011006877B4 - door closers - Google Patents

door closers Download PDF

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Publication number
DE102011006877B4
DE102011006877B4 DE102011006877.5A DE102011006877A DE102011006877B4 DE 102011006877 B4 DE102011006877 B4 DE 102011006877B4 DE 102011006877 A DE102011006877 A DE 102011006877A DE 102011006877 B4 DE102011006877 B4 DE 102011006877B4
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DE
Germany
Prior art keywords
valve
piston
housing
door closer
door
Prior art date
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Active
Application number
DE102011006877.5A
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German (de)
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DE102011006877A1 (en
Inventor
Benjamin Wörner
Thorsten Bantle
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Geze GmbH
Original Assignee
Geze GmbH
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Filing date
Publication date
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Priority to DE102011006877.5A priority Critical patent/DE102011006877B4/en
Publication of DE102011006877A1 publication Critical patent/DE102011006877A1/en
Application granted granted Critical
Publication of DE102011006877B4 publication Critical patent/DE102011006877B4/en
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/12Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers 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
    • E05F3/104Closers 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132Doors

Abstract

Door closer (1), comprising a housing (2), a gear arrangement arranged in the housing (2) and a piston (8) operatively connected to the gear arrangement and displaceable linearly, acted on by a compression spring (9) and filled with a hydraulic fluid Interior of the housing (2) in a spring chamber (12) and a piston chamber (14) divided, in the housing (2) and in the piston (8) arranged overflow channels (16), and arranged in the overflow (16) valves for control the behavior of the door closer (1), characterized in that a switching valve (21) is provided, with a valve plunger (22) adjustable along its extent in a closure cover (13) of the housing (2) whose position determines the starting point of an opening damping, in that the valve tappet (22) lifts a valve ball (23) from its associated valve seat in the overflow channel (16.2) in the piston (8), the valve tappet (22) being in d en overflow channel (16.2) in the piston (8), which is dependent on the door opening angle in different positions within a bore of the housing (2) engages.

Description

  • The invention relates to a door closer according to the preamble of claim 1.
  • The DE 34 11 189 A1 discloses an automatic door closer with a detachable with a door wing output shaft which is rotatable from a closed position in both directions and within the housing with a Hubkurvenscheibe form fit between rollers of a longitudinally movable carriage, to which a memory forming spring arrangement and the piston of a hydraulic damping device attack. The interior of the door closer housing is divided into two separate by the piston pressure medium spaces. The pressure medium spaces are connected to each other by separate channels, each with a closable throttle valve to flow out of the pressure medium from the shrinking when closing the door pressure chamber and a piston arranged in the opening movement of the door opening check valve. The separate channels are alternately blocked and released by a piston displaceable by the spool, wherein in each channel a pressure medium spaces, if necessary, connecting safety valve is connected. The stroke end position of the spool is adjustable with respect to the piston, whereby the transition of two different damping regions of the closing movement is adjustable.
  • The arrangement is complex due to many components and sealing points and may be prone to failure. The damping of the closing speed is possible only in two stages, with only the Umstellpunkt is adjustable. An opening damping is not available.
  • From the EP 0 562 465 A1 is a door closer with a by the door movement in a housing against a spring force movable and fluid damped piston known which divides the housing into two pressure chambers for the hydraulic fluid. In the housing, a flow channel for the hydraulic fluid is provided, which connects the two pressure chambers and in which a valve is arranged, which determines both the opening loss and the closing speed of the door closer.
  • Disadvantageously, the starting point of the opening damping with respect to the door opening angle is determined by the position of the valve in the flow channel.
  • Furthermore, from the DE 33 20 609 A1 a door closer with an electromagnetic locking device is known, wherein the locking device comprises a differential piston which actuates a ball valve.
  • The invention has for its object to form a door closer, the point of use for the opening loss is adjustable.
  • The object is solved by the features of claim 1.
  • The subclaims form advantageous embodiments of the invention.
  • The dampening of the door prevents the door from slamming against, for example, a wall, a piece of furniture or the like, thereby preventing damage to both the door panel and the wall or furniture. Depending on the possible maximum door opening angle, the point of application of the opening damping is advantageously adjustable in order to be able to open the door leaf undamped over the widest possible range of the door opening.
  • The position of the piston of the door closer is directly related to the opening angle of the door, since the output shaft of the door closer via a gear assembly, for example with a cam or a pinion, is connected to the piston, wherein the rotational movement of the output shaft of the gear assembly in a sliding movement of the Piston is reacted, and vice versa.
  • To adjust the starting point of the opening damping, the door closer has a switching valve whose adjustable valve tappet is accommodated in a closure cover of the housing of the door closer and engages in an overflow channel in the piston of the door closer, a valve ball and an associated valve seat being arranged as valve elements in the overflow channel. The position of the valve stem with respect to the piston determines the point of application of the opening damping, in which the valve ball rests on its associated valve seat and closes the overflow channel in the piston.
  • The switching valve causes an opening or closing of the overflow. When the overflow channel is closed, the hydraulic fluid in the door closer can flow only in the case of a movement of the piston in the opening direction via an externally adjustable throttle valve for the opening damping arranged in the housing of the door closer.
  • The position of the valve stem is adjustable with respect to the piston or valve elements on the valve ball and valve seat in the piston by the Valve stem is received in a thread sealed to the outside in the closure cap, wherein the valve stem is axially displaced by rotation.
  • In the following an embodiment in the drawing with reference to the figures will be explained in more detail.
  • Showing:
  • 1 a horizontal section through the door closer;
  • 2 a section of the door closer in the region of the piston in section, wherein the cutting plane is above the piston rod. The piston position corresponds to a door opening angle of approx. 5 °;
  • 3 a further illustration of the section according to 2 but at a door opening angle of about 110 ° and a movement in the opening direction;
  • 4 a further illustration of the section according to 2 However, at a door opening angle of about 60 ° and a movement in the closing direction.
  • In the 1 is a horizontal section through a door closer 1 shown. The door closer 1 includes a housing 2 in which a cam 3 rotatably on a the output shaft of the door closer 1 forming, in the housing 2 rotatably mounted axle 4 is arranged. In the case 2 is still one along the door closer 1 sliding carriage 5 provided, which at one end a rotatably mounted roller 6 that coincides with the contour of the cam 3 interacts. Andernends is on the sled 5 a piston rod 7 set which at her from the sled 5 opposite end of a piston 8th having. The piston 8th is in the formed in this area as a bore housing 2 sealed against the inner wall, so that on the one hand of the piston 8th a spring room 12 is formed. The hole in the housing 2 is end with a closure lid 13 closed, allowing between the piston 8th and the closure lid 13 a piston chamber 14 is formed. The interior of the housing 2 is filled in a known manner with hydraulic fluid, so that in the spring chamber 12 and in the piston chamber 14 Hydraulic fluid is located.
  • In the spring room 12 is a compression spring 9 arranged on the piston 8th and on a spring plate 10 is supported. The spring plate 10 is with a Schließkraftverstelleinrichtung 11 operatively connected, which is a displacement of the spring plate 10 in relation to the piston 8th allows, whereby the compression spring 9 can be biased to the closing force of the door closer 1 to adapt to different door weights.
  • By opening the wing of the door, not shown here, which in a conventional manner with the axis 4 the cam 3 can be connected directly or via a lever arrangement, the carriage is 5 in the 1 shifted to the left as the distance of the roll 6 due to the contour of the curve slide 3 opposite the axis 4 increased. This will be the over the piston rod 7 with the sledge 5 connected pistons 8th against the compression spring 9 also moved to the left. The by compression of the compression spring 9 stored energy is available for the automatic closing movement of the door leaf again.
  • In the 2 to 4 is a section of another section plane through the door closer 1 according to 1 shown, but the section above the piston rod 7 runs so that it is not cut anymore. The piston 8th is located in one, depending on the door opening angle, different position within the bore of the housing 2 , For influencing the opening and closing behavior are throttle valves 15 provided in overflow channels 16 in the case 2 are arranged, whereby a controlled overflow of the hydraulic fluid between the spring chamber 12 and piston chamber 14 on both sides of the piston 8th is possible.
  • Furthermore, in the transfer channels 16 check valves 17 provided which an overflow of the hydraulic fluid depending on the direction of movement of the piston 8th and thus the flow direction of the hydraulic fluid via different transfer ports 16 force. To secure the valve ball of the check valve 17 can in the associated overflow 16 laterally in this protruding security elements 18 be provided.
  • The overflow channels 16 are, if necessary, by means of closure elements 19 that's here as in the overflow channels 16 pressed balls are formed, closed at the end.
  • In the piston 8th is a switching valve to determine the point of application of the opening damping 21 provided, which has an adjustable valve tappet 22 has, in the cap 13 is included and in the overflow channel 16.2 in the piston 8th intervenes. The valve lifter 22 can on the preferably with a valve spring 20 applied valve ball 23 lift off from their associated valve seat. The arrangement of valve tappets 22 with the preferably spring-loaded valve ball 23 in the overflow channel 16.2 with the associated valve seat form the switching valve 21 , Instead of the valve ball 23 it is also possible to provide a valve cone or an otherwise shaped valve element.
  • The valve lifter 22 is in the cap 13 taken in a thread and sealed to the outside. The valve lifter 22 has a tool holder 24 For example, for an Allen key or a screwdriver, wherein by rotation of the valve lifter 22 an axial displacement of the valve stem 22 he follows.
  • In 2 the arrangement of the opening damping is shown with adjustable starting point when opening the door, wherein the starting point of the opening damping is set here to about 110 ° door opening angle. The door opening angle is just about 5 °, causing the piston 8th near its end position (in the figure on the right) and the volume of the piston chamber 14 still low.
  • When opening the door, the piston 8th in the case 2 continue in the direction of the compression spring 9 emotional. The hydraulic fluid, located in the spring chamber 12 is located, flows over in the piston 8th arranged open check valve 17.2 and the overflow channel 16.2 on the valve lifter 22 passing the valve ball 23 holds lifted from their associated valve seat, in the piston chamber 14 , Furthermore, also via the throttle valve 15.1 for the opening damping, the overflow channel 16.1 and the open check valve 17.1 Hydraulic fluid in the piston chamber 14 overflow. The check valve 17.3 is closed and prevents hydraulic fluid from the spring chamber 12 over the throttle valve 15.2 for the closing speed and the throttle valve 15.3 for the final impact in the piston chamber 14 flows.
  • In 3 the arrangement of the opening loss is shown at the point of use at a door opening angle of approximately 110 °, for example, set here, the by adjusting the axially adjustable in the cap 13 mounted valve tappet 22 the switching valve 21 is effected. The piston 8th so far in the direction of the compression spring 9 moved that the valve lifter 22 the valve ball 23 released by the flowing hydraulic fluid and additionally by the valve spring 20 shifted in the direction of its valve seat and now rests on the valve seat, whereby the overflow 16.2 is closed.
  • The hydraulic fluid, located in the spring chamber 12 can, during further movement of the piston 8th in the direction of the compression spring 9 only via the throttle valve 15.1 for the opening damping, the overflow channel 16.1 and the open check valve 17.1 in the piston chamber 14 stream.
  • 4 shows the arrangement when closing the door, the piston 8th is pushed back to its original position and is here in a position corresponding to a door opening angle of about 60 °. The hydraulic fluid from the piston chamber 14 is doing by the piston 8th over the overflow channel 16.3 , the throttle valve 15.2 for the closing speed and - with even further closing - the throttle valve 15.3 for the final blow back into the spring chamber 12 pressed. Due to the flow of hydraulic fluid is the check valve 17.3 open, the check valves 17.1 and 17.2 are closed. The valve ball 23 for the opening damping is through the valve lifter 22 the switching valve 21 lifted again from its valve seat, but in the closing movement no overflow of hydraulic fluid through the overflow 16.2 takes place because the check valve 17.2 is acted upon in the closing direction.
  • LIST OF REFERENCE NUMBERS
  • 1
    door closers
    2
    casing
    3
    cam
    4
    axis
    5
    carriage
    6
    role
    7
    piston rod
    8th
    piston
    9
    compression spring
    10
    spring plate
    11
    Closing force adjustment
    12
    spring chamber
    13
    cap
    14
    piston chamber
    15
    throttle valve
    15.1
    Throttle valve opening damping
    15.2
    Throttling valve closing speed
    15.3
    Throttle valve stopper
    16
    overflow
    17
    check valve
    18
    fuse element
    19
    closure element
    20
    valve spring
    21
    switching valve
    22
    tappet
    23
    valve ball
    24
    tool holder

Claims (4)

  1. Door closer ( 1 ), with a housing ( 2 ), one in the housing ( 2 ) arranged gear arrangement and an operatively connected to the gear arrangement, linearly displaceably guided, with a compression spring ( 9 ) acted upon piston ( 8th ), which is filled with a hydraulic fluid interior of the housing ( 2 ) in a spring chamber ( 12 ) and a piston chamber ( 14 ), with im Casing ( 2 ) and in the piston ( 8th ) arranged overflow channels ( 16 ), and with in the overflow ( 16 ) arranged valves for controlling the behavior of the door closer ( 1 ), characterized in that a switching valve ( 21 ) is provided with a in a closure cap ( 13 ) of the housing ( 2 ) along its extension adjustable valve tappets ( 22 ) whose position determines the point of application of an opening damping by the valve stem ( 22 ) a valve ball ( 23 ) of their associated valve seat in the overflow channel ( 16.2 ) in the piston ( 8th ), wherein the valve tappet ( 22 ) in the overflow channel ( 16.2 ) in the piston ( 8th ), which depends on the door opening angle in different positions within a bore of the housing ( 2 is engaged.
  2. Door closer according to claim 1, characterized in that the position of the valve stem ( 22 ) with respect to the valve elements valve ball ( 23 ) and valve seat in the piston ( 8th ) is adjustable.
  3. Door closer according to claim 1, characterized in that the valve tappet ( 22 ) in the closure lid ( 13 ) is received in a thread, wherein by rotation of the valve stem ( 22 ) an axial displacement of the valve stem ( 22 ) he follows.
  4. Door closer according to claim 1, characterized in that the valve ball ( 23 ) with a valve spring ( 20 ) is acted upon in the direction of its valve seat.
DE102011006877.5A 2011-04-06 2011-04-06 door closers Active DE102011006877B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102011006877.5A DE102011006877B4 (en) 2011-04-06 2011-04-06 door closers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006877.5A DE102011006877B4 (en) 2011-04-06 2011-04-06 door closers
EP12163068.5A EP2508702A3 (en) 2011-04-06 2012-04-04 Door closer

Publications (2)

Publication Number Publication Date
DE102011006877A1 DE102011006877A1 (en) 2012-10-11
DE102011006877B4 true DE102011006877B4 (en) 2015-06-11

Family

ID=46025446

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102011006877.5A Active DE102011006877B4 (en) 2011-04-06 2011-04-06 door closers

Country Status (2)

Country Link
EP (1) EP2508702A3 (en)
DE (1) DE102011006877B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6343531B2 (en) * 2014-09-16 2018-06-13 日本ドアーチエック製造株式会社 Door Closer
US9714534B1 (en) * 2016-08-01 2017-07-25 International Door Closers, Inc. Door closer
USD858253S1 (en) 2016-10-18 2019-09-03 International Door Closers, Inc. Door closer
GB2577541A (en) * 2018-09-28 2020-04-01 Assa Abloy Ltd Adjustable door-closer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320609A1 (en) * 1983-06-08 1984-12-13 Bks Gmbh Automatic door closer with electrohydraulic stop device
DE3411189A1 (en) * 1984-03-27 1985-10-10 Dorma Baubeschlag Automatic door closer
EP0562465A1 (en) * 1992-03-23 1993-09-29 Paul Schmid Door closer with combined valve for damping on opening and for closing speed

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965805A (en) * 1931-12-24 1934-07-10 David E Riggins Doorcheck
FI62401C (en) * 1976-12-13 1982-12-10 Waertsilae Oy Ab Doerrstaengare
JP2854614B2 (en) * 1989-07-21 1999-02-03 リョービ株式会社 Door closer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320609A1 (en) * 1983-06-08 1984-12-13 Bks Gmbh Automatic door closer with electrohydraulic stop device
DE3411189A1 (en) * 1984-03-27 1985-10-10 Dorma Baubeschlag Automatic door closer
EP0562465A1 (en) * 1992-03-23 1993-09-29 Paul Schmid Door closer with combined valve for damping on opening and for closing speed

Also Published As

Publication number Publication date
EP2508702A2 (en) 2012-10-10
DE102011006877A1 (en) 2012-10-11
EP2508702A3 (en) 2014-11-26

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