KR940000715A - Enhanced Flow Hinge - Google Patents

Enhanced Flow Hinge Download PDF

Info

Publication number
KR940000715A
KR940000715A KR1019920009846A KR920009846A KR940000715A KR 940000715 A KR940000715 A KR 940000715A KR 1019920009846 A KR1019920009846 A KR 1019920009846A KR 920009846 A KR920009846 A KR 920009846A KR 940000715 A KR940000715 A KR 940000715A
Authority
KR
South Korea
Prior art keywords
hinge
piston
flow
improved
case
Prior art date
Application number
KR1019920009846A
Other languages
Korean (ko)
Inventor
이문현
Original Assignee
이문현
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 이문현 filed Critical 이문현
Priority to KR1019920009846A priority Critical patent/KR940000715A/en
Priority to CA002097273A priority patent/CA2097273A1/en
Priority to DE4318903A priority patent/DE4318903A1/en
Priority to JP5137954A priority patent/JPH06146705A/en
Publication of KR940000715A publication Critical patent/KR940000715A/en

Links

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
    • E05F3/20—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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • 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
    • E05F3/225—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor
    • E05F3/226—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor with means to adjust the closed position of the wing
    • 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
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/41—Concealed
    • 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
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/452—Mounting location; Visibility of the elements in or on the floor or wall
    • 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
    • E05Y2800/10—Additional functions
    • E05Y2800/12—Sealing
    • 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
    • E05Y2800/28—Form or shape tubular, annular
    • 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

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

본 발명은 도어 하부에 부착되는 플로우 힌지에 관한 것으로, 특히 힌지의 시공을 간편하게 하고 작동이 원활하며 수명이 길게 연장된 개량형 플로우 힌지에 관한 것으로서, 유압실(30)과 캠기구실(20)을 격벽(12)으로 분리시켜서 형성된 힌지몸체(10)와, 상기 힌지몸체(10)에 형성되어 있는 유압실(30)에 한 개 이상의 메인유로(34.A)와 보조유로(34b)를 형성시킨 실린더(31)와, 상기 실린더(31)에 내설되고 체크밸브가 설치된 유로가 형성되어있는 피스톤(32)과, 상기 피스톤(32)과 피스톤로드(23)를 통하여 연결된 종동절(24)과, 힌지축과 결합된 원동절(21)로 된 캠(21)으로 구성된 것을 특징으로 하는 개량형 플로우 힌지이다.The present invention relates to a flow hinge that is attached to the lower door, and more particularly to an improved flow hinge that facilitates the construction of the hinge, smooth operation and long life, the hydraulic chamber 30 and the cam mechanism chamber 20 One or more main passages 34.A and auxiliary passages 34b are formed in the hinge body 10 formed by separating the partition wall 12 and the hydraulic chamber 30 formed in the hinge body 10. A cylinder (31), a piston (32) formed with a check valve installed in the cylinder (31), and a driven section (24) connected through the piston (32) and the piston rod (23); It is an improved flow hinge, characterized in that consisting of a cam 21 of the prime mover 21 coupled to the hinge axis.

Description

개량형 플로우 힌지Enhanced Flow Hinge

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 개량형 플로우 힌지를 설명하기 위한 횡단면도.1 is a cross-sectional view for explaining the improved flow hinge of the present invention.

제2도는 본 발명의 캠과 피스톤을 제거한 힌지몸체를 설명하기 위한 종 단면도.2 is a longitudinal cross-sectional view for explaining the hinge body from which the cam and the piston of the present invention are removed.

제3도는 본 발명의 유압실 측면 단면도.3 is a side cross-sectional view of the hydraulic chamber of the present invention.

제4도는 본 발명의 힌지몸체와 힌지케이스의 상호위치 조정관계를 설명하기 위한 도면.4 is a view for explaining the mutual position adjustment relationship between the hinge body and the hinge case of the present invention.

제5도는 본 발명의 체크 밸브 상세 단면도.5 is a detailed cross-sectional view of the check valve of the present invention.

Claims (10)

유압실(30)과 캠기구실(20)을 격벽(12)으로 분리시켜서 형성된 힌지 몸체(10)와, 상기 힌지몸체(10)에 형성되어 있는 유압실(30)에 한개 이상의 메인유로(34a)와 보조유로(34b)를 형성시킨 실린더(31)와, 상기 실린더(31)에 내설되고 체크밸브가 설치된 유로가 형성되어 있는 피스톤(32)과, 피스톤로드(23)를 통하여 상기 피스톤(32)과 연결된 종동절(24)과, 힌지축과 결합된 원동절(21)로 된 캠(21)을 포함하여 이루어지는 개량형 플토우 힌지.At least one main flow path 34a in the hinge body 10 formed by separating the hydraulic chamber 30 and the cam mechanism chamber 20 by the partition wall 12 and the hydraulic chamber 30 formed in the hinge body 10. ) And a cylinder (31) formed with an auxiliary flow path (34b), a piston (32) having a flow path provided in the cylinder (31) and provided with a check valve, and the piston (32) through a piston rod (23). And a cam 21 made up of a driven joint 24 coupled to the hinge shaft and a driven joint 21 coupled to the hinge shaft. 제1항에 있어서, 상기 메인유로(34a) 및/또는 보조유로(34b)에 유량조절나사(35)를 나착하여 메인유로 (34a)와 보조유로(34b)에 흐르는 유압작동유의 흐름량을 조절하도톡 구성된 개량형 플로우 힌지.The flow rate adjusting screw 35 is attached to the main flow passage 34a and / or the auxiliary flow passage 34b to adjust the flow rate of the hydraulic hydraulic oil flowing through the main flow passage 34a and the auxiliary flow passage 34b. Improved flow hinge configured for tok. 제1항에 있어거, 상기 실린더(31)의 일측에 리미트 스위치(39)를 형성하여, 상기 피스톤(32)작동에 의한 압력 또는 자기력으로 작동되도록 하여 도어의 열고 닫힘의 위치를 전기적으로 감지할 수 있도록 한 것을 특징으로 하는 개량형 플로우 힌지.The method according to claim 1, wherein the limit switch 39 is formed on one side of the cylinder 31 to be operated by pressure or magnetic force by the piston 32 to electrically detect the position of the opening and closing of the door. Improved flow hinge characterized in that it is possible. 제1항에 있어서, 힌지케이스(11)의 덮개(17)의 저면 일측에 좌우조절나사(37)가 나착된 덮개조절편(18)을 하향으로 돌설시키고, 상기 힌지몸체(10)의 좌우 이동이 가능하도록 힌지몸체(10)의 몸체조절편(47)에 조정홈(38)을 형성하여, 힌지케이스 덮개(17)와 힌지몸체를 상기 조정홈(38)과 고정나사(19)로서 조정결합시켜 힌지몸체의 캠(21)과 케이스의 상대적 위치를 조절할 수 있도록 구성한 것을 특징으로 하는 개량형 플로우 힌지.According to claim 1, wherein the cover adjustment piece 18, the left and right adjustment screw 37 is screwed downward on one side of the bottom surface of the cover 17 of the hinge case 11, the left and right movement of the hinge body (10) The adjustment groove 38 is formed in the body adjusting piece 47 of the hinge body 10 so that the hinge case cover 17 and the hinge body can be adjusted as the adjustment groove 38 and the fixing screw 19. Improved flow hinge, characterized in that configured to adjust the relative position of the cam body 21 and the case of the hinge body. 제1항에 있어서, 힌지 케이스(11)의 일측 중앙에 위치핀(13)을 부착하여 시공시 도어 프레임과 소정의 거리를 유지할 수 있도록 구성된 것을 특징으로 하는 개량형 플로우 힌지.The improved flow hinge according to claim 1, wherein a position pin (13) is attached to the center of one side of the hinge case (11) to maintain a predetermined distance from the door frame during construction. 제1항에 있어서, 힌지 케이스(11)의 하부 가장자리에 높이 조절나사(14)를 나착한 조절편(15)를 부착하여 힌지 케이스(11)의 높이와 수평을 조절할 수 있도록 구성된 것을 특징으로 하는 개량형 플로우 힌지.According to claim 1, characterized in that configured to adjust the height and level of the hinge case (11) by attaching the adjusting piece (15) to the lower edge of the hinge case (11) attached to the height adjustment screw (14). Improved flow hinge. 제1항에 있어서, 상기 힌지몸체에 물반(16a, 16b)을 상호 직각되게 설치하여 수평상태를 간단하게 확인할수 있도록 구성된 것을 특징으로 하는 개량형 프로우 힌지.The improved pro hinge according to claim 1, wherein the hinge bodies are installed at right angles to each other so that the horizontal state can be easily checked. 제1, 2항에 있어서, 상기 실린더(31)내벽에 입구를 가진 한 개 이상의 보조유로(34b)를 형성시켜 피스톤(32)이 소정 위치 이상 이동되면, 상기 보조유로(34b)의 입구가 피스톤(32)의 측면에 의해 막혀서 피스톤의 이동 속도가 조절될 수 있도록 구성된 것을 특징으로 하는 개량형 플로우 힌지.The inlet of the auxiliary flow passage (34b) according to claim 1 or 2, wherein when the piston (32) is moved over a predetermined position by forming one or more auxiliary flow passages (34b) having an inlet on the inner wall of the cylinder (31). An improved flow hinge, characterized in that it is blocked by the side of (32) so that the moving speed of the piston can be adjusted. 제1항에 있어서, 상기 피스톤(32)에 형성된 체크 밸브(33)는 체크밸브볼(33a)틀 밀어주는 스프링(33b)의 탄성강도를 조절할 수 있는 조절 스크류(33c)를 결합하여 구성된 것을 특징으로 하는 개량형 플로우 힌지.According to claim 1, wherein the check valve 33 formed in the piston 32 is characterized in that the combination of the adjustment screw 33c for adjusting the elastic strength of the spring 33b for pushing the check valve ball 33a frame. Improved flow hinge. 제1항에 있어서, 상기 힌지케이스 내에 두개의 물반을 상호 직각되게 설치하여 수평상태를 간단하게 확인할 수 있도록 구성된 것을 특징으로 하는 개량형 플로우 힌지.The improved flow hinge according to claim 1, wherein the two hinges are installed at right angles to each other in the hinge case so as to easily check the horizontal state. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920009846A 1992-06-08 1992-06-08 Enhanced Flow Hinge KR940000715A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019920009846A KR940000715A (en) 1992-06-08 1992-06-08 Enhanced Flow Hinge
CA002097273A CA2097273A1 (en) 1992-06-08 1993-05-28 Floor hinge
DE4318903A DE4318903A1 (en) 1992-06-08 1993-06-07 Floor hinge for automatic closing of swing door - has lubricating and working oil arranged respectively in separate mechanical and hydraulic structural parts
JP5137954A JPH06146705A (en) 1992-06-08 1993-06-08 Floor-hinge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920009846A KR940000715A (en) 1992-06-08 1992-06-08 Enhanced Flow Hinge

Publications (1)

Publication Number Publication Date
KR940000715A true KR940000715A (en) 1994-01-03

Family

ID=19334295

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920009846A KR940000715A (en) 1992-06-08 1992-06-08 Enhanced Flow Hinge

Country Status (4)

Country Link
JP (1) JPH06146705A (en)
KR (1) KR940000715A (en)
CA (1) CA2097273A1 (en)
DE (1) DE4318903A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100433952B1 (en) * 2001-11-24 2004-06-04 황천익 Apparatus for Setting-Position of Floor-Hinge Casing
KR20040046945A (en) * 2002-11-28 2004-06-05 엘지전자 주식회사 Dish washer
KR100439180B1 (en) * 2002-01-22 2004-07-05 광주과학기술원 Magnetic floor hinge
KR100699252B1 (en) * 2005-09-27 2007-03-28 박형태 Floor hinge

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2637048B2 (en) * 1994-09-22 1997-08-06 日本ドアーチエック製造株式会社 Floor hinge
KR100263251B1 (en) * 1998-04-23 2000-08-01 신경한 Hinge for door
DE19922916A1 (en) * 1999-01-18 2000-07-20 Geze Gmbh Door closer with drive for closing door casement has spring piston and damping piston mounted rotationally secured relative to stroke cam plate through interaction with drive housing
JP4693280B2 (en) * 2001-05-14 2011-06-01 トステム株式会社 Opening device
DE20112896U1 (en) * 2001-08-03 2002-12-05 It Progetti S R L Soc Automatic door closer
CN1985063B (en) * 2004-07-09 2012-11-07 松下电器产业株式会社 Door device and refrigerator
DE102006038109B4 (en) * 2006-08-14 2020-08-06 Dormakaba Deutschland Gmbh Door closer
KR101024700B1 (en) * 2008-09-19 2011-03-25 우희범 An oilpressure-type floor hinge apparatus for door
CN101975006B (en) * 2010-10-28 2013-10-02 肇庆市志成气动有限公司 Multifunctional floor spring
DE102011017795B4 (en) * 2011-04-29 2013-04-04 Geze Gmbh door closers
DE102011017794B4 (en) * 2011-04-29 2013-01-31 Geze Gmbh door closers
DE102014116102A1 (en) * 2014-11-05 2016-05-12 Dorma Deutschland Gmbh Cement box for a device
CN104989208B (en) * 2015-08-07 2016-11-30 佛山市奥达金属制品有限公司 Mechanical open gate delay floor spring
WO2018116275A1 (en) * 2016-12-23 2018-06-28 Colcom Group S.P.A. Hinge for the rotatable movement of a door or similar closing element
GB2580013B (en) * 2018-09-28 2023-05-17 Assa Abloy Ltd Door-closer with overload valve
CN116066463A (en) * 2021-10-29 2023-05-05 北京小米移动软件有限公司 Damping mechanism, hinge and folding electronic equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504517A (en) * 1922-03-04 1924-08-12 Schnitzler Abraham Doorcheck
US3449789A (en) * 1966-10-03 1969-06-17 Norris Industries Door closer and check
DE2427114A1 (en) * 1974-06-05 1975-12-18 Rade Bjelajac Automatic door closer with fully open stop - externally accessible adjuster screw forces spring against piston
FR2311917A1 (en) * 1975-05-20 1976-12-17 Pont A Mousson Hydraulic door closing damper - has internal flexible rubber boot to retain hydraulic oil and prevent seepage
DE3406410A1 (en) * 1984-02-22 1985-08-22 Geze Gmbh, 7250 Leonberg Hydraulic door closer with opening-angle signalling
JPH0239029U (en) * 1988-09-05 1990-03-15
KR930001035Y1 (en) * 1990-07-31 1993-03-08 주식회사 동광 Door closer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100433952B1 (en) * 2001-11-24 2004-06-04 황천익 Apparatus for Setting-Position of Floor-Hinge Casing
KR100439180B1 (en) * 2002-01-22 2004-07-05 광주과학기술원 Magnetic floor hinge
KR20040046945A (en) * 2002-11-28 2004-06-05 엘지전자 주식회사 Dish washer
KR100699252B1 (en) * 2005-09-27 2007-03-28 박형태 Floor hinge

Also Published As

Publication number Publication date
DE4318903A1 (en) 1993-12-09
CA2097273A1 (en) 1993-12-09
JPH06146705A (en) 1994-05-27

Similar Documents

Publication Publication Date Title
KR940000715A (en) Enhanced Flow Hinge
US7600295B2 (en) Arrangement for damping pivot movements
EP0469697A1 (en) Hydraulic door closer
EP2019895B1 (en) Hinge structure for self-closing doors or the like, particularly glass doors or the like, and assembly incorporating such structure
KR101553824B1 (en) Compact floor hinge
KR930021943A (en) Electronic Control Valve
US6397430B1 (en) Adjustable hydraulic backcheck door closer
KR20140066995A (en) Damping device for moveable furniture parts
EA022971B1 (en) Door closer, particularly for glass doors
KR910001250A (en) Variable capacity compressor
JPS57208335A (en) Shock absorber unit
US4073033A (en) Door closing device
CA2089756C (en) Damper mechanism
DE602005020144D1 (en) DOOR CLOSER
US4697302A (en) Spring operated automatic door and window closing hinge
SU1369680A3 (en) Check valve
ATE76930T1 (en) DOOR CLOSER.
KR20020032938A (en) Hydraulic Controlled Shock-absorbing Hinge
EP0252554A2 (en) Automatic door closer
SE8206150L (en) WITH DIPPING BODY PROVIDED SWITCH TOWARDS
CN1030629A (en) Door closer
KR200199733Y1 (en) Slow shut off check valve with cushion cylinder
KR200296662Y1 (en) Automatic door closing device
KR20230111721A (en) Floor hinge device capable of preventing the damping control bolt from being separated
KR950010338Y1 (en) Hinge for opening and closing door

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E902 Notification of reason for refusal
E601 Decision to refuse application