EP2505755A2 - Verborgener Türschließer mit einstellbarem Rückschlag - Google Patents

Verborgener Türschließer mit einstellbarem Rückschlag Download PDF

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Publication number
EP2505755A2
EP2505755A2 EP11166327A EP11166327A EP2505755A2 EP 2505755 A2 EP2505755 A2 EP 2505755A2 EP 11166327 A EP11166327 A EP 11166327A EP 11166327 A EP11166327 A EP 11166327A EP 2505755 A2 EP2505755 A2 EP 2505755A2
Authority
EP
European Patent Office
Prior art keywords
oil
section
mount
guiding passage
door closer
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Withdrawn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
EP11166327A
Other languages
English (en)
French (fr)
Other versions
EP2505755A3 (de
Inventor
Yuan-Cheng Ho
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.)
Taiwan Daedalus Door Control Co Ltd
Original Assignee
Taiwan Daedalus Door Control Co Ltd
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 Taiwan Daedalus Door Control Co Ltd filed Critical Taiwan Daedalus Door Control Co Ltd
Publication of EP2505755A2 publication Critical patent/EP2505755A2/de
Publication of EP2505755A3 publication Critical patent/EP2505755A3/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Withdrawn legal-status Critical Current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
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—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
    • 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
    • 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
    • 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
    • E05Y2800/26—Form or shape
    • E05Y2800/292—Form or shape having apertures
    • 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 generally to concealed door closers and more particularly, to such a concealed door closer having an adjustable back check.
  • a door closer is an apparatus for automatically closing a door leaf after the door leaf is opened.
  • a concealed door closer or a surface-mounted door closer connected between the door leaf and the door frame By means of a concealed door closer or a surface-mounted door closer connected between the door leaf and the door frame, the door leaf can be automatically closed after it is opened.
  • a concealed door closer such as a floor hinge, for example
  • the external force exerting on the door leaf for opening the door leaf will cause a pivot that is connected with the door leaf to rotate and the rotation motion of the pivot will drive a damping unit to move and store the energy for returning the door leaf.
  • the door leaf will be automatically returned to its closed position because the resilient rebounding force provided by the spring of the damping unit will force the pivot to turn reversely.
  • concealed door closers may not be supplied with an optional 'back check' function.
  • the back check function controls the amount of resistance against a door passing a selected point. It provides resistance within the door closer to prohibit the door leaf from being thrown open, thereby preventing the door leaf, especially a glass door leaf from damage caused by people kicking or throwing the door open and also by the door being violently blown open by the wind.
  • the back check function built in the conventional concealed door closer is fixed, unadjustable, resulting in that the preset magnitude of the back check may let a weak person feel too hard to open the door and a strong person feel too easy to open the door. In other words, the back check of the conventional concealed door closer can not be adjusted subject to different conditions of use, which is in need of improvement.
  • the present invention has been accomplished in view of the above-noted circumstances. It is an object of the present invention to provide a concealed door closer, which can adjust the magnitude of the back check subject to different conditions of use.
  • Another object of the present invention is to provide a concealed door closer that can forcedly release an exceeding pressure exerting thereon so as to prevent damage thereof.
  • the present invention provides a concealed door closer with adjustable back check, which comprises a mount, a pivot unit, two damping units, at least one flow adjusting valve and a back check adjusting valve.
  • the mount is provided with an interior oil chamber, an oil guiding passage in fluid communication with the oil chamber, at least one first adjustment hole inwardly extending from a surface of the mount in fluid communication with the oil guiding passage, and a second adjustment hole inwardly extending from the surface of the mount in fluid communication with the oil guiding passage.
  • the pivot unit is rotatably disposed in the oil chamber of the mount and has a pivot extending through a top surface of the mount and being rotatable by a pushing or drawing force exerting on the door leaf connected with the pivot.
  • the two damping units are disposed in the oil chamber of the mount, located by two lateral sides of the oil guiding passage respectively and connected with the pivot unit, such that the damping units are able to be driven by a rotation movement of the pivot unit to move along a longitudinal direction of the mount so as to provide a damping effect upon opening or closing door.
  • the flow adjusting valve is disposed in the first adjustment hole and insertable into the oil guiding passage of the mount to control the flow rate of the hydraulic oil running in the oil guiding passage.
  • the back check adjusting valve is disposed in the second adjustment hole, insertable into the oil guiding passage of the mount, and located between the pivot unit and the flow adjusting valve to control the flow rate of the hydraulic oil running from the oil chamber into the oil guiding passage upon opening door.
  • each damping unit is equipped with a pressure releasing valve that can forcedly release the hydraulic oil under the condition that the back check adjusting valve is completely tightened in the second adjustment hole and the door leaf is forced to open or the door leaf is forced by a wind blow or an external force to close, thereby preventing the door closer from damage due to an exceeding pressure.
  • the door closer denoted by reference numeral 10 and provided by a preferred embodiment of the present invention, comprises a mount 20, a pivot unit 30, two damping units 40, two flow adjusting valves 50a and 50b, a back check adjusting valve 60, a check valve 70, and two pressure releasing valves 80.
  • the mount 20 is shaped like an elongated cubic and provided at an inside thereof with an oil chamber 21 for storage of hydraulic oil, an oil guiding passage 22 communicated with the oil chamber 21, and two first adjustment holes 23a and 23b and a second adjustment hole 24, which inwardly extend from a top surface of the mount 20 and are communicated with the oil guiding passage 22 respectively.
  • the oil guiding passage 22 is composed of a first section 221, a second section 223 beneath the first section 221, and a third section 225 above the second section 223.
  • a steel ball 227 is disposed between the first and third sections 221 and 225 to block the first section 221 from the third section 225.
  • an end of the first section 221 is communicated with the oil chamber 21 and the other end of the first section 221 is communicated with the second section 223 through the second adjustment hole 24.
  • Two ends of the second section 223 are communicated with the oil chamber 21 through a first oil conduit 25 and a second oil conduit 26 respectively.
  • the third section 225 is communicated with the first adjustment holes 23a and 23b. Through the first adjustment hole 23a, the third section 225 is communicated with the second section 223.
  • the mount 20 is further provided with a mounting hole 29, which inwardly extends from a rear surface of the mount 20 and is communicated with the second section 223 of the oil guiding passage 22, the second oil conduit 26 and the first adjustment hole 23b.
  • the pivot unit 30 includes two plates 32 disposed in the oil chamber 21 face to face, three rollers 34 mounted between the two plates 32 and located at three vertexes of an imaginary triangle respectively, and a pivot 36 rotatably mounted between the two plates 32 and located at a center among the three rollers 34.
  • the pivot 36 has a top end extending through the top surface of the mount 20 for connection with a door leaf, and a bottom end provided with a cam 362, which is pushable against one of the three rollers 34 when the pivot 30 is rotated so as to move the two plates 32 along the longitudinal direction of the mount 20.
  • the two damping units 40 are disposed inside the oil chamber 21 of the mount 20 and located by two lateral sides of the oil guiding passage 22 respectively. Since two damping units 40 are identical to each other, hereunder only one unit will be described for concise illustration.
  • the damping unit 40 includes a link 42, a spring 44 and a piston 46.
  • An end of the link 42 is connected between the two plates 32 and the other end of the link 42 is connected with the piston 46.
  • the spring 44 is sleeved onto the link 42 and located between the two plates 32 and the piston 46. In this way, the movement of the plates 32 will drive the piston 46 that is mounted to the link 42 to move along the longitudinal direction of the mount 20.
  • the spring 44 will be compressed to store energy for returning the spring 44 to its former shape.
  • the flow adjusting valves 50a and 50b are screwingly inserted into the first adjustment holes 23a and 23b respectively in such a way that they are insertable into the oil guiding passage 22 of the mount 20, as shown in FIGS. 2 and 4 , such that the speed at which the door closer 10 closes the door can be adjusted by adjusting the flow rate of the hydraulic oil through the flow adjusting valves 50a and 50b.
  • the back check adjusting valve 60 is screwingly inserted into the second adjustment hole 24 in such a way that it is insertable into the oil guiding passage 22 of the mount 20.
  • the back check adjusting valve 60 is located between the pivot unit 30 and the flow adjusting valve 50a for controlling the flow rate of the hydraulic oil running from the first section 221 of the oil guiding passage 22 into the second section 223 of the oil guiding passage 22, as shown in FIGS. 2 and 4 .
  • the back check adjusting valve 60 is composed of a first valve body 62 and a steel made first check valve ball 64.
  • the first valve body 62 has a first stepped hole 622 extending along a longitudinal direction thereof in fluid communication with the second section 223 of the oil guiding passage 22, and a first through hole 624 transversely extending in communication with the first stepped hole 622 and the first section 221 of the oil guiding passage 22.
  • the first check valve ball 64 is moveably mounted in the first stepped hole 622 and normally located adjacent to the diameter reducing portion of the first stepped hole 622.
  • the ball 64 can be driven by oil pressure to move away from the aforesaid diameter reducing portion to an open position for allowing the hydraulic oil to run from the second section 223 of the oil guiding passage 22 to the first section 221 of the oil guiding passage 22 through the first stepped hole 622 and the first through hole 624.
  • the first check valve ball 64 blocks the first stepped hole 622 in one way, it can prohibit the hydraulic oil in the oil chamber 21 from running into the second section 223 of the oil guiding passage 22 from the first section 221 of the oil guiding passage 22 through the through hole 624 and the stepped hole 622.
  • the check valve 70 is screwingly inserted into the mounting hole 29 and provided with a valve body 72 and a steel made second check valve ball 74, as shown in FIG. 4 .
  • the valve body 72 has a second stepped hole 722 extending along a longitudinal direction thereof in fluid communication with the second section 223 of the oil guiding passage 22, and a second through hole 724 transversely extending in fluid communication with the second stepped hole 722 and the second oil conduit 26.
  • the second check valve ball 74 is moveably mounted in the second stepped hole 722 and normally located adjacent to the diameter reducing portion of the second stepped hole 722.
  • the second check valve ball 74 can be driven by oil pressure to an open position for allowing the hydraulic oil to run from the second section 223 of the oil guiding passage 22 to the oil chamber 21 through the second stepped hole 722, the second through hole 724 and the second oil conduit 26. As shown in FIGS. 4 and 5 , the hydraulic oil in the oil chamber 21 can not flow into the second section 223 of the oil guiding passage 22 through the second conduit 26 because of the one-way blocking effect provided by the second check valve ball 74.
  • the two pressure releasing valves 80 are respectively mounted in the pistons 46 of the two damping units 40 and arranged in two reverse pressure releasing directions for fitting different door opening directions.
  • the two pressure releasing valves 80 are identical to each other. Hereinafter only one pressure releasing valve 80 will be recited for concise illustration. As shown in FIGS.
  • the pressure releasing valve 80 comprises a third valve body 82 mounted in the piston 46 and provided with a third stepped hole 822 extending along a longitudinal direction thereof, a third check valve ball 84 moveably mounted in the third stepped hole 822 and located normally adjacent to the diameter reducing portion thereof, a pin 86 transversely mounted in the valve body 82 across the third stepped hole 822, and a spring 88 mounted between the third check valve ball 84 and the pin 86 for providing the third check valve ball 84 a return force.
  • the third check valve ball 84 will block the hydraulic oil in oil chamber 21 from flowing from a left side of the piston 46 to a right side of the piston 46 through the third stepped hole 822 as shown in FIG. 3 .
  • the third check valve ball 84 will be forced to move to a position allowing the hydraulic oil to flow from the left side of the piston 46 to the right side of the piston 46 through the third stepped hole 822 as shown in FIG. 6 .
  • the cam 362 at the bottom of the pivot 36 will push one of two rollers 34 that are located by a left side of the cam 362 to drive the plates 32 to move leftward along the longitudinal direction of the mount 20, such that the two pistons 46 of the damping units 40 will gradually move leftward along with the plates 32, as shown in FIG. 3 .
  • the pistons 46 will stop moving leftward because the hydraulic oil in the oil chamber 21 is prohibited from flowing from the first section 221 to the second section 223, resulting in that the door leaf will stop opening. If it is this case, the door leaf will open about 54 degrees to 66 degrees and then stop opening. Under this circumstance, if the door leaf is continuously pushed by an external force for opening the door leaf, the third check valve ball 84 of the pressure releasing valve 80 will receive an exceeding oil pressure and then be pushed away, as shown in FIG. 6 , to a position allowing the hydraulic oil at the left side of the pistons 46 to flow to the right side of the pistons 46 through the third stepped hole 822 of the pressure releasing valve 80 for forcedly releasing the exceeding pressure.
  • the hydraulic oil in the oil chamber 21 at the left side of the pistons 46 will flow from the first section 221 of the oil guiding passage 22 to the second section 223 of the oil guiding passage 22 through the gap between the back check adjusting valve 60 and the second adjustment hole 24, and then flow into the second stepped hole 722 while pushing the second check valve ball 74 of the check valve 70 away, and then pass through the second through hole 724 and the second oil conduit 26 into the oil chamber 21 at the right side of the pistons 46.
  • the hydraulic oil in the third section 225 will have a part thereof flowing into the oil chamber 21 at the left side of the pistons 46 through the fourth oil conduit 28 and the other part thereof passing through the gap between the flow adjusting valve 50a and the first adjustment hole 23a into the second section 223 of the oil guiding passage 22 and then through the first oil conduit 25 into the oil chamber 21 at the left side of the pistons 46 until the door leaf is completely closed.
  • the back check exerting on the door leaf during opening door and the open angle of door leaf can be adjusted subject to different conditions of use by controlling the position of the back check adjusting valve 60.
  • the back check adjusting valve 60 is fully tightened in the second adjustment hole 24, the maximum angle that the door leaf can open is about 54 degrees to 66 degrees and the back check exerting on the door leaf reaches a maximum value.
  • the purpose of using two flow adjusting valves 50a and 50b is to gain a two-step door closing effect.
  • the concealed door closer of the present invention can be equipped with one adjusting valve 50a only, such that only one-step door closing effect can be attained.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Fluid-Damping Devices (AREA)
  • Check Valves (AREA)
EP11166327.4A 2011-03-30 2011-05-17 Verborgener Türschließer mit einstellbarem Rückschlag Withdrawn EP2505755A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW100111087A TW201239184A (en) 2011-03-30 2011-03-30 Top-bottom pivot hinge featuring adjustable damping resistance

Publications (2)

Publication Number Publication Date
EP2505755A2 true EP2505755A2 (de) 2012-10-03
EP2505755A3 EP2505755A3 (de) 2014-07-23

Family

ID=44650946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11166327.4A Withdrawn EP2505755A3 (de) 2011-03-30 2011-05-17 Verborgener Türschließer mit einstellbarem Rückschlag

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Country Link
EP (1) EP2505755A3 (de)
TW (1) TW201239184A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013149313A1 (pt) * 2012-04-02 2013-10-10 Freitas Marinho Francisco Alan Disposição construtiva em mola elastomérica para fechamento de portas
USD894713S1 (en) 2015-09-21 2020-09-01 Julian Hall Swing hinge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201439421A (zh) * 2013-04-08 2014-10-16 Gang Gwo Ind Co Ltd 油壓鉸鍊
TW201439420A (zh) * 2013-04-12 2014-10-16 Gang Gwo Ind Co Ltd 油壓鉸鏈

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0755254Y2 (ja) * 1989-07-06 1995-12-20 リョービ株式会社 フロアーヒンジの油圧制御機構
US5386614A (en) * 1993-01-08 1995-02-07 Corbin Russwin, Inc. Door closer
US6397430B1 (en) * 2000-03-06 2002-06-04 Jackson Corporation Adjustable hydraulic backcheck door closer
US8181311B2 (en) * 2009-08-07 2012-05-22 Heng Kuo Co., Ltd. Adjustable hinged door closer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013149313A1 (pt) * 2012-04-02 2013-10-10 Freitas Marinho Francisco Alan Disposição construtiva em mola elastomérica para fechamento de portas
US8813313B2 (en) 2012-04-02 2014-08-26 Francisco Alan Freitas Marinho Spring-biased floor-mounted door hinge
USD894713S1 (en) 2015-09-21 2020-09-01 Julian Hall Swing hinge

Also Published As

Publication number Publication date
TW201239184A (en) 2012-10-01
TWI367989B (de) 2012-07-11
EP2505755A3 (de) 2014-07-23

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