EP2119860A1 - Ferme-porte - Google Patents

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Publication number
EP2119860A1
EP2119860A1 EP07832291A EP07832291A EP2119860A1 EP 2119860 A1 EP2119860 A1 EP 2119860A1 EP 07832291 A EP07832291 A EP 07832291A EP 07832291 A EP07832291 A EP 07832291A EP 2119860 A1 EP2119860 A1 EP 2119860A1
Authority
EP
European Patent Office
Prior art keywords
piston
door
oil storage
cylinder
enlarged
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Withdrawn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
EP07832291A
Other languages
German (de)
English (en)
Inventor
Tadashi Okada
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.)
Nitto Kohki Co Ltd
Original Assignee
Nitto Kohki 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 Nitto Kohki Co Ltd filed Critical Nitto Kohki Co Ltd
Publication of EP2119860A1 publication Critical patent/EP2119860A1/fr
Withdrawn legal-status Critical Current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
    • E05F3/08—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston
    • 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
    • E05F3/20—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
    • 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
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • 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
    • E05F1/1008—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 with a coil spring parallel with the pivot axis
    • E05F1/1016—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 with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • 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
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
    • E05F1/1215—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • 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 having a hydraulic braking mechanism.
  • Patent Literature 1 discloses a door closer that closes a door by the urging force of a return spring and that has a hydraulic braking mechanism provided in a casing to prevent the door from closing rapidly.
  • the braking mechanism is provided with a piston which moves in response to opening and closing of the door.
  • the piston is vertically movable through thread engagement with a cylinder provided on the inner periphery of the casing. When the piston moves vertically, the piston receives the braking force of an oil (damping fluid) filled in the casing and this enables the door to be closed slowly.
  • an oil damping fluid
  • the piston 134 is provided with a fluid passage 136a through which the oil is allowed to flow between an upper oil storage part 126b and a lower oil storage part 126a, and also provided with an adjusting rod (adjusting means) 128 used to adjust the amount of oil moving through the fluid passage.
  • Patent Literature 1 The conventional technique disclosed in Patent Literature 1, however, has the following problems. Because a mineral oil is used as the oil, the viscosity of the oil considerably changes depending on a change in temperature. Therefore, every time the ambient temperature changes, it is necessary to adjust the amount of oil flowing through the fluid passage 136a by adjusting the adjusting rod 128.
  • a predetermined backlash is provided between a thread groove 125 formed on the inner periphery (cylinder) of the casing 111 and a thread ridge 135 formed on the outer peripheral surface of the piston 134 to allow the piston 134 to move smoothly. Therefore, when the door is closed, the lower surface 135b of the thread ridge 135 and the lower surface 125b of the thread groove 125 are caused to collide with each other across the backlash between the respective threads of the piston and the cylinder by the urging force of the return spring, which may damage the piston and the inner periphery of the cylinder.
  • the upper surface (one side surface) 135a of the thread ridge 135 and the upper surface (one side surface) 125a of the thread groove 125 collide with each other across the backlash between the respective threads of the piston and the cylinder, which may also damage the piston and the inner periphery of the cylinder.
  • An object of the present invention is to provide a door closer capable of readily reducing the change in door closing time which is caused due to an ambient temperature change and also capable of preventing damage to the piston and the cylinder when the door is opened and closed.
  • the present invention provides a door closer installed along the axis of rotation of a door.
  • the door closer includes a closing-urging section that urges the door toward a closed position, and a speed adjusting section that adjusts the return speed of the door when moving toward the closed position.
  • the speed adjusting section has a tubular cylinder, an oil storage section formed in the cylinder to store a damping fluid, and a piston that moves in the oil storage section in response to opening and closing of the door.
  • the oil storage section has an upper oil storage part formed at the upper side of the piston, and a lower oil storage part formed at the lower end side of the piston.
  • the piston is in thread engagement with the cylinder and movable in the cylinder while being braked by the damping fluid stored in the oil storage section.
  • the piston is provided with a fluid passage that allows the damping fluid to flow between the upper oil storage part and the lower oil storage part.
  • the piston is further provided with an adjusting means that adjusts the amount of damping fluid passing through the fluid passage.
  • the damping fluid has a small change in viscosity with temperature.
  • the oil storage section is provided with a resilient member that presses the piston toward one end of the direction of movement of the piston. One side surface of a thread ridge formed on the outer peripheral surface of the piston is pressed against one side surface of a thread groove formed on the inner periphery of the cylinder by the urging force of the resilient member.
  • a resilient member is provided in the oil storage section to press the piston toward one end of the direction of movement of the piston, thereby pressing one side surface of the thread ridge formed on the outer peripheral surface of the piston against one side surface of the thread groove formed on the inner periphery of the cylinder. Therefore, when the door starts to move from the open position toward the closed position, even if the piston is moved toward the one end of the direction of movement of the piston, it is possible to prevent collision between the one side surface of the thread ridge formed on the piston and the one side surface of the thread groove formed on the cylinder and hence possible to prevent damage to the piston and the cylinder.
  • the piston which is in thread engagement with the cylinder, moves in a state where the one side surface of the thread ridge is pressed against the one side surface of the thread groove by the pressing force of the resilient member.
  • the piston moves from the open position toward the closed position, because the one side surface of the thread ridge formed on the outer peripheral surface of the piston is pressed against the one side surface of the thread groove formed on the inner periphery of the cylinder, it is possible to prevent collision between the one side surface of the thread ridge of the piston and the one side surface of the thread groove of the cylinder and hence possible to prevent damage to the piston and the casing (cylinder).
  • Silicone oil is recommended to be used as the damping fluid.
  • the silicone oil has a lubricant added thereto.
  • the silicone oil has a lubricant added thereto, it is possible to improve the wear resistance of the thread ridge of the piston and the thread groove of the cylinder when the one side surface of the thread ridge and the one side surface of the thread groove slide against each other.
  • the door closer is characterized as follows.
  • the resilient member is a compression spring disposed in the lower oil storage part.
  • the closing-urging section is provided with a shaft secured to a floor.
  • the shaft is provided at its top with an enlarged-diameter part having an enlarged diameter.
  • the enlarged-diameter part has a cylindrical recess which is coaxial with the shaft.
  • the outer peripheral surface of the enlarged-diameter part and the cylinder are secured in close contact with each other to prevent the damping fluid stored in the oil storage section from leaking out thereof.
  • the upper end of the enlarged-diameter part reaches a position where it is substantially the same level as the lower end of the adjusting means to widen the area of close contact between the outer peripheral surface of the enlarged-diameter part and the cylinder.
  • the lower part of the compression spring is held in the recess.
  • the upper end of the enlarged-diameter part reaches a position where it is substantially coincident with the lower end of the adjusting means to widen the area of close contact between the outer peripheral surface of the enlarged-diameter part and the cylinder. Therefore, it is possible to prevent the damping fluid stored in the oil storage section from leaking out thereof.
  • the volumetric capacity of the lower oil storage part can be increased without providing a special space therefore.
  • the lower part of the compression spring is held in the recess, therefore, the compression spring can be stably held without the need to provide a special seat to mount the spring. The assembly is easy because the compression spring can be installed simply by putting it in the lower oil storage part.
  • a door closer 10 according to the first embodiment of the present invention is of the center-hung type and has a substantially cylindrical casing 11, which has a closing-urging section 12 that urges a door D toward a closed position and a speed adjusting section 14 that adjusts the return speed of the door D. It should be noted that, in this embodiment, the door D is a fire door.
  • the closing-urging section 12 has a door mount 16 provided at the bottom thereof to mount the door D thereon, a support leg 18 inserted into and secured to a seat S provided on a floor G, a shaft 20 secured to the support leg 18, and a coil spring 22 disposed between the outer peripheral surface of the shaft 20 and the inner peripheral surface of the casing 11.
  • the lower end of the coil spring 22 is secured to the shaft 20.
  • the upper end of the coil spring 22 is retained by a set pin 27 attached to a spring seat 23 secured to the casing 11.
  • the top of the shaft 20 is provided with an enlarged-diameter part 20a having an enlarged diameter.
  • the enlarged-diameter part 20a has a cylindrical recess 20b, which is formed coaxially with the shaft 20.
  • the outer peripheral surface 20c of the enlarged-diameter part 20a and an inner tube 24 are secured in close contact with each other by brazing.
  • the upper end of the enlarged-diameter part 20a reaches a position where it is substantially coincident with the lower end of an adjusting rod 28.
  • the brazing between the outer peripheral surface 20c of the enlarged-diameter part 20a and the inner tube 24 prevents the damper oil stored in an oil storage section 26 from leaking out thereof.
  • the speed adjusting section 14 has the inner tube (cylinder) 24 provided in close contact with the inner peripheral surface of the casing 11 to define an oil storage section 26 for storing a damper oil (damping fluid) P.
  • the speed adjusting section 14 further has a piston 34 that moves vertically in the oil storage section 26, and an adjusting rod installation part 30 having a through-hole 32 through which an adjusting rod 28 (described later) is installed.
  • the adjusting rod installation part 30 is splined to the piston 34.
  • the piston 34 is unable to rotate relative to the adjusting rod installation part 30 but vertically movable relative to the adjusting rod installation part 30.
  • the oil storage section 26 is divided into upper and lower parts by the piston 34.
  • the oil storage section 26 has a lower oil storage part (highpressure chamber) 26a formed below the piston 34 and an upper oil storage part (low-pressure chamber) 26b formed above the piston 34.
  • the piston 34 is in thread engagement with the inner tube 24.
  • a thread ridge 35 formed on the outer peripheral surface of the piston 34 spirally moves along a thread groove 25 formed on the inner tube 24, thereby allowing the piston 34 to move vertically in the oil storage section 26 ( Fig. 2 ). Further, a predetermined backlash is provided between the thread ridge 35 and the thread groove 25.
  • the lower end of the piston 34 is provided with an adjusting valve 36 that adjust the movement of the damper oil P in the oil storage section 26.
  • the adjusting valve (fluid passage) 36 has a cylindrical first adjusting part 36a and a second adjusting part 36b equipped with a check valve.
  • the first adjusting part 36a adjusts the amount of damper oil P flowing from the lower oil storage part 26a toward the upper oil storage part 26b when the piston 34 moves upward (during the door D is closing).
  • the second adjusting part 36b prevents, with the check valve, the damper oil P from flowing from the lower oil storage part 26a toward the upper oil storage part 26b when the piston 34 moves downward.
  • the second adjusting part 36b allows the damper oil P to flow from the upper oil storage part 26b toward the lower oil storage part 26a when the piston 34 moves upward.
  • the adjusting rod 28 has a tapered configuration in which the diameter gradually increases toward its lower end.
  • the adjusting rod 28 is vertically movable in response to the adjustment of an adjusting knob 28a provided on its top to adjust the clearance formed between the tapered part of the adjusting rod 28 and the first adjusting part 36a, thereby allowing adjustment of the flowing amount of damper oil P.
  • the adjusting rod 28 needs to be adjusted only when the door D is installed; it is unnecessary to adjust the adjusting rod 28 every time the ambient temperature changes.
  • the damper oil P used herein is silicone oil having a predetermined lubricant added thereto.
  • the lower oil storage part 26a is provided with a compression spring (resilient member) 38.
  • the lower part of the compression spring 38 is held in the recess 20b of the shaft 20.
  • the lower end of the compression spring 38 abuts against the bottom of the recess 20b.
  • the upper end of the compression spring 38 abuts against the lower end of the piston 34.
  • the compression spring 38 preferably has a spring force (pressing force) with which the upper surface 35a of the thread ridge 35 of the piston 34 presses against the upper surface 25a of the thread groove 25 of the inner tube 24 when the door D is in the open position.
  • the piston 34 moves upward in a state where the upper surface (one side surface) 35a of the thread ridge 35 formed on the outer peripheral surface of the piston 34 is constantly pressed against the upper surface (one side surface) 25a of the thread groove 25 formed on the inner tube 24 by the pressing force of the compression spring 38 provided in the lower oil storage part 26a.
  • the damper oil P flows from the upper oil storage part 26b toward the lower oil storage part 26a through the second adjusting part 36b.
  • the door D when the door D is to be closed, it is moved toward the closed position by the restoring force of the coil spring 22 having a predetermined urging force imparted thereto, and the piston 34, which moves in response to the movement of the door mount 16 carrying the door D, rotates in the opposite direction to that during the door-opening operation.
  • the thread ridge 35 formed on the outer periphery of the piston 34 spirally moves along the thread groove 25 formed on the inner tube 24.
  • the piston 34 moves downward in the oil storage section 26.
  • the piston 34 moves downward in a state where the upper surface 35a of the thread ridge 35 formed on the outer peripheral surface of the piston 34 is constantly pressed against the upper surface 25a of the thread groove 25 formed on the inner periphery of the inner tube 24 by the pressing force of the compression spring 38 provided in the lower oil storage part 26a. Further, when the piston 34 moves downward in the oil storage section 26, the speed of downward movement of the piston 34 is adjusted by the resistance of the damper oil P flowing through the clearance formed between the tapered part of the adjusting rod 28 and the first adjusting part 36a.
  • the upper surface 35a of the thread ridge 35 of the piston 34 is constantly pressed against the upper surface 25a of the thread groove 25 of the inner tube 24, therefore it is possible to prevent collision between the lower surface 35b of the thread ridge 35 formed on the piston 34 and the lower surface 25b of the thread groove 25 formed on the inner tube 24 at the moment that the door D starts to move from the open position toward the closed position, and hence possible to prevent damage to the piston 34 and the casing (inner tube) 11. Further, when the door D is in the open position, the pressure in the lower oil storage part 26a is high.
  • the pressing force of the compression spring 38 and the reaction force of the damper oil P simultaneously act on the piston 34, and it is possible to prevent collision between the lower surface 35b and the lower surface 25b of the thread groove 25 formed on the inner tube 24 even more effectively at the moment that the door D starts to move toward the closed position.
  • a fire door is used as the door D and the weight of the door D is large for that reason. Therefore, a coil spring 22 having a large restoring force is used. Accordingly, a larger force acts on the inner tube 24 compared with the case of an ordinary door at the moment that the door D starts to move toward the closed position.
  • the upper surface 35a of the thread ridge 35 of the piston 34 is constantly pressed against the upper surface 25a of the thread groove 25 of the inner tube 24, therefore it is possible to prevent collision between the lower surface 35b of the thread ridge 35 of the piston 34 and the lower surface 25b of the thread groove 25 of the inner tube 24 and hence possible to prevent damage to the piston 34 and the casing (inner tube) 11.
  • silicone oil P is used as the damper oil, therefore the change in viscosity of the oil caused by a temperature change is small. Therefore, it is unnecessary to adjust the clearance formed between the tapered part of the adjusting rod 28 and the first adjusting part 36a by adjusting the adjusting rod 28 every time the ambient temperature changes, and it is possible to reduce the change in closing time of the door D which is influenced by an ambient temperature change.
  • the silicone oil P has a lubricant added thereto, therefore it is possible to improve the wear resistance of the thread ridge 35 of the piston 34 and the thread groove 25 of the inner tube 24 when the lower edge 35b of the thread ridge 35 and the lower edge 25b of the thread groove 25 slide against each other.
  • the upper end of the enlarged-diameter part 20a reaches a position where it is substantially coincident with the lower end of the adjusting rod 28, thereby widening the area of brazing between the outer peripheral surface 20c of the enlarged-diameter part 20a and the inner tube 24 of the casing 11. Therefore, it is possible to prevent the damper oil stored in the oil storage section 26 from leaking out thereof.
  • forming the recess 20a on the inner periphery of the enlarged-diameter part 20a enables the volumetric capacity of the lower oil storage part 26a to be increased without providing a special space therefore. Further, because the lower part of the compression spring 38 is held in the recess 20a, the compression spring can be stably held without the need to provide a special spring mounting seat.
  • an adjusting rod 50 which is capable of changing the amount of damper oil Q flowing through the clearance formed in the first adjusting part 36a in accordance with a temperature change, is provided. More specifically, the adjusting rod 50 is provided on its top with an expansion member 54 that expands and contracts according to the result of detection by a temperature sensor 52.
  • the expansion member 54 expands downward causing the adjusting rod 50 to move downward and resulting in an enlargement of the clearance in the first adjusting part 36a ( Fig. 3(a) ).
  • the flow rate of oil flowing through the clearance in the first adjusting part 36a can be kept constant and the closing speed of the door D can be kept constant.
  • the expansion member 54 expands upward causing the adjusting rod 50 to move upward and resulting in a reduction of the clearance in the first adjusting part 36a ( Fig. 3(b) ). Accordingly, even when the viscosity of the damper oil Q has become low under high-temperature conditions, the flow rate of oil flowing through the clearance in the first adjusting part 36a can be kept constant, and the closing speed of the door D can be kept constant.
  • the expansion member 54 is provided on the top of the adjusting rod 50, which is adjustably moved up and down according to the result of detection by the temperature sensor 52. Therefore, even if the viscosity of the damper oil Q easily varies with changes in temperature, the flow rate of oil flowing through the clearance in the first adjusting part 36a can be kept constant, and the closing speed of the door D can be kept constant without the need to adjust the adjusting rod every time the ambient temperature changes.
  • the present invention is not limited to these embodiments.
  • the compression spring 38 is provided in the lower oil storage part 26a, the present invention is not limited thereto.
  • a tension spring may be provided in the upper oil storage part 26b.
  • the door closer 10 is not limited to the center-hung type but may be of the hinged type.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Fluid-Damping Devices (AREA)
EP07832291A 2007-02-15 2007-11-21 Ferme-porte Withdrawn EP2119860A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007034512A JP2008196256A (ja) 2007-02-15 2007-02-15 ドアクローザ
PCT/JP2007/072561 WO2008099546A1 (fr) 2007-02-15 2007-11-21 Ferme-porte

Publications (1)

Publication Number Publication Date
EP2119860A1 true EP2119860A1 (fr) 2009-11-18

Family

ID=39689801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07832291A Withdrawn EP2119860A1 (fr) 2007-02-15 2007-11-21 Ferme-porte

Country Status (5)

Country Link
EP (1) EP2119860A1 (fr)
JP (1) JP2008196256A (fr)
KR (1) KR20090110912A (fr)
CN (1) CN101641486A (fr)
WO (1) WO2008099546A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021170870A1 (fr) * 2020-02-28 2021-09-02 Locinox Charnière à amortissement hydraulique pour articuler un élément de fermeture sur un support
WO2021170871A1 (fr) * 2020-02-28 2021-09-02 Locinox Amortisseur permettant d'amortir le mouvement de fermeture d'un système de fermeture

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Publication number Priority date Publication date Assignee Title
KR101050509B1 (ko) 2009-04-09 2011-07-20 (주) 아이레보 금강씨에스 작동유의 확산 방지구조를 갖는 방화용 도어 클로저
CN102409915B (zh) * 2011-08-30 2013-11-06 陈杰辉 多功能可调节自闭式缓冲合页
DE102014215902A1 (de) * 2014-08-11 2016-02-11 Suspa Gmbh Dämpfungs-Scharnier zum Dämpfen einer Scharnier-Drehbewegung um eine Scharnier-Drehachse
JP6421027B2 (ja) * 2014-12-10 2018-11-07 日本ドアーチエック製造株式会社 ドアクローザ
US9920561B2 (en) 2015-06-11 2018-03-20 Cmech (Guangzhou) Ltd. Combination hydraulic and pneumatic 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
CN105587199B (zh) 2016-02-25 2017-06-06 希美克(广州)实业有限公司 一种气压闭门器
JP6159448B2 (ja) * 2016-06-08 2017-07-05 リョービ株式会社 ドアクローザ
CN107916863A (zh) * 2016-10-10 2018-04-17 赵芬 能下降和可预先设定铰链自闭快慢的结构

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JP3071577B2 (ja) * 1992-08-31 2000-07-31 不二精器株式会社 回転ダンパ
JP3124898B2 (ja) * 1994-09-27 2001-01-15 日東工器株式会社 ドアクローザ用流体摩擦抵抗型ダンパー装置
JP4667656B2 (ja) * 2001-06-26 2011-04-13 Ｎｔｎ株式会社 ドアオープナー
JP3766666B2 (ja) * 2002-12-13 2006-04-12 日東工器株式会社 両開きドアクローザ
JP4216794B2 (ja) * 2004-12-08 2009-01-28 日東工器株式会社 両開きドア用ヒンジ

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021170870A1 (fr) * 2020-02-28 2021-09-02 Locinox Charnière à amortissement hydraulique pour articuler un élément de fermeture sur un support
WO2021170871A1 (fr) * 2020-02-28 2021-09-02 Locinox Amortisseur permettant d'amortir le mouvement de fermeture d'un système de fermeture

Also Published As

Publication number Publication date
KR20090110912A (ko) 2009-10-23
JP2008196256A (ja) 2008-08-28
CN101641486A (zh) 2010-02-03
WO2008099546A1 (fr) 2008-08-21

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