WO2004095982A1 - Amortisseur pour porte - Google Patents

Amortisseur pour porte Download PDF

Info

Publication number
WO2004095982A1
WO2004095982A1 PCT/KR2003/001114 KR0301114W WO2004095982A1 WO 2004095982 A1 WO2004095982 A1 WO 2004095982A1 KR 0301114 W KR0301114 W KR 0301114W WO 2004095982 A1 WO2004095982 A1 WO 2004095982A1
Authority
WO
WIPO (PCT)
Prior art keywords
bumper
check valve
main body
oil
housing main
Prior art date
Application number
PCT/KR2003/001114
Other languages
English (en)
Inventor
Jae-Hong Kim
Original Assignee
Moonju Hardware 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 Moonju Hardware Co. ,Ltd filed Critical Moonju Hardware Co. ,Ltd
Publication of WO2004095982A1 publication Critical patent/WO2004095982A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • 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
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • E05F5/10—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops with piston brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • F16F9/5126—Piston, or piston-like valve elements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • E05Y2201/212—Buffers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/254—Fluid or viscous friction
    • E05Y2201/256—Fluid or viscous friction with pistons or vanes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/262—Type of motion, e.g. braking
    • E05Y2201/264—Type of motion, e.g. braking linear
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets

Definitions

  • the present invention relates to a door damper, and more particularly, to a door damper for preventing impact and noise that are generated when a door of home furniture, sinks and the like collides with a doorframe in the course of being opened and closed.
  • a door is pivotally attached on a sink or furniture such as a wardrobe, a bookcase and the like by a spring hinge.
  • a spring hinge When being opened and closed, particularly when being suddenly closed rather than being opened, the door collides with a doorframe to generate impact and noise, or be broken sometimes in the worst case.
  • the door damper disclosed in the patent comprises a housing divided into an oil chamber 113 and an oil leakage preventing chamber; a rod inserted in the housing and provided at its outer circumference with an oil passage groove; first and se'on ⁇ check valves 210 and 200 provided with plural oil passages, the first and second check valves being mounted on the rod and disposed in the oil chamber 113 such that the oil passages can communicate with the oil groove; a spring 190 for biasing the second check valve 200; a bushing 180 provided at its outer circumference with a packing and seated on the oil leakage preventing chamber; an oil seal 170 abutted on the bushing 180, the oil seal 170 having a shaft and a flange; a coupling projection having an outer bottom with a seating projection and an inner bottom with a coupling groove in which the shaft of the oil seal
  • An object of the present invention is to provide a door damper that can (1) eliminate noise caused by air bubbles by minimizing the generation of the air bubbles within an oil chamber in the course of manufacturing the door damper, (2) avoid bounce of a door from a bumper by forming a space between a bumper and a bumper fixing cap even when the door is abruptly closed, thereby preventing the noise, (3) attenuate impact by remarkably reducing an amount of oil passing through first and second check valves even when the door is suddenly closed, and (4) prevent a leakage of oil by blocking a minute gap that may be formed between an oil seal and a housing main body when the door is rapidly closed.
  • the present invention provides a door damper comprising a housing main body having proximal and distal ends, the distal end being opened and the proximal end being closed, the housing main body having a relatively large inner diameter wall and a relatively small diameter wall and being provided at the inner diameter walls with first and second steps, a spring seating projection being formed on an inner wall of the proximal end; a piston rod disposed in the housing main body; an oil seal ring mounted on the first step; a tube guide bushing closely abutted to the oil seal ring; a seating ring contacting the tube guide bushing and fixed by the second step; a tube-shaped contracting member disposed in the tube guide bushing; a cylinder guide connected to the piston rod to be slidable along the sme*ll inner diameter wall of the housing main body; a first check valve fixed on a proximal end of the cylinder guide; a second check valve slidably disposed between the cylinder guide and the first check valve; a
  • the cylinder guide is provided with a central hollow hole
  • the first check valve comprises a 4- way oil passage groove, a spring seating groove, and a central hollow hole.
  • the second check valve comprises four radial projections formed on an inner wall of the second check valve.
  • the door damper may further comprise an oil seal having a flange abutted on the oil seal ring, wherein the oil seal ring is provided with a circular projection that is depressed into the flange of the oil seal.
  • the bumper is spaced away from the bumper- fixing cap at a predetermined distance.
  • Fig. 1 is a sectional view of a conventional door damper
  • Fig. 2 is a sectional view of a door damper according to a preferred embodiment of the present invention.
  • Fig. 3 is a sectional view of a door damper operated to a door closed position according to a preferred embodiment of the present invention
  • Fig. 4 is a sectional view illustrating a housing main body and a piston rod of a door damper according to a preferred embodiment of the present invention
  • Fig. 5 is a sectional view illustrating a bumper, a bumper fixing cap and a space guide bushing of a door damper according to a preferred embodiment of the present invention
  • Fig. 6 is a sectional view illustrating an oil seal ring, an oil seal, a tube guide bushing, a tube-shaped contracting member and a seating ring of a door damper according to a preferred embodiment of the present invention
  • Fig. 7 is a sectional view illustrating a cylinder guide of a door damper according to a preferred embodiment of the present invention
  • Fig. 8 is sectional, plane, and perspective views illustrating a second check valve of a door damper according to a preferred embodiment of the present invention.
  • Fig. 8 is bottom, sectional, and plane views illustrating a first check valve of a door damper according to a preferred embodiment of the present invention.
  • Figs. 2 to 9 show a door damper according to a preferred embodiment of the present invention.
  • the inventive door damper comprises a housing main body 100, one end 150 of which is opened.
  • the housing "main body 100 has a relatively large inner diameter wall proximal to the opened end and a relatively small inner diameter wall.
  • the relatively large and small diameter walls are divided by a step 141.
  • the relatively large inner diameter wall is provided with an inclined step 140.
  • a spring seating projection 120 is formed on an inner wall of a closed end of the housing main body 100.
  • the housing main body 100 is provided with an oil chamber 110 defined between the closed end and the seating ring 68 and fully filled with oil.
  • a piston rod 40 Disposed on a central axis of the housing main body 100 is a piston rod 40, around a proximal end of which a cylinder guide 220 having a diameter slightly less than that of the small inner diameter wall of the housing main body 100 is fitted.
  • a first check valve 210 Fitted around a proximal end of a guide shaft 221 of the cylinder guide 220 is a first check valve 210 provided with a spring seating groove 211 in which one end of a spring 130 is seated.
  • a second check valve 200 is fitted in the guide shaft portion 221 such that it is movable by the first check valve 210 within a limited range.
  • the other end of the spring 130 is fixedly mounted on the spring seating projection 120 formed on the inner wall of the closed end of the housing main body 100.
  • a space guide bushing 50 Inserted in the opened end 150 of the housing main body 100 is a space guide bushing 50 provided at its distal end with outer and inner flanges 52 and 53 (see FIG. 5) .
  • a proximal portion of the space guide bushing 50 is designed having an outer diameter less than that of the large inner diameter wall of the housing ai ⁇ body 100 so that it can be tightly fitted in the large inner diameter wall.
  • a proximal end of the space guide bushing 50 supportably contacts the oil seal ring 75.
  • the space guide bushing 50 is coupled on the housing main body 100 through, for example, a high frequency-bonding process.
  • a bumper-fixing cap 30 is slidably disposed in an operating space 51 defined by the space guide bushing 50.
  • the bumper-fixing cap 30 is fitted around a distal end portion of the piston rod 40 and provided at its proximal end with an outer flange 31.
  • the flange 31 can be abutted to the inner flange 53 of the space guide bushing 50 when the piston rod 40 is biased by the spring 130, thereby stopping the bumper fixing cap 30.
  • the bumper-fixing cap 30 is provided at its distal end with a itmv ⁇ ll in which the bumper 10 can be seated with a predetermined gap.
  • the bumper 10 is formed of rubber or foam resin to absorb impact.
  • the oil seal 70 is also formed of rubber or foam resin to prevent the leakage of the oil.
  • a circumferential projection 72 is formed on a central hole, through which the piston rod 40 penetrates, of the oil seal 70, removing the oil from the piston rod 40 when the piston 40 moves in and out of the oil chamber 110 (see Fig. 6) .
  • the oil seal 70 is fixed by the oil seal ring 75.
  • the oil seal ring 75 is provided at its proximal end with a projection 76 being tightly depressed into an outer flange 71 of the oil seal 70, thereby blocking a minute gap that may be formed between the oil seal 70 and the inner wall of the housing main body 100 when the housing main body 100 is deformed by excessive oil pressure.
  • the excessive oil pressure may be created by piston rod 40 receiving the pressure from the bumper 100 when the door is quickly closed. That is, since the oil seal formed of elastic material is increased in its volume by the volume of the projection, the oil leakage can be prevented. It has been noted through a series of tests that, when pressure applied to the bumper 10 is 45 Kgf, a 0.03 mm gap is created. Referring to Fig.
  • the first check valve 210 is fitted around the proximal end of the guide shaft 221 of the cylinder guide 220.
  • the first check valve 210 is provided at its outer circumference with a step, on which the spring seating groove 211 is formed, and a four-way oil groove 212 defining an oil passage.
  • the second check valve 200 is fitted around the guide shaft 221 of the cylinder guide 220 and is capable of moving within a limited range by the first check valve 210.
  • Four radial projections 201 are formed on an inner circumferential wall of the second check valve 200.
  • a portion of the second check valve 200 is cut to define a variable gap 202.
  • the variable gap 202 is closed during the normal operation.--, However, when the door is suddenly closed, oil pressure directed into the second check valve 200 is increased to apply force in a direction where a diameter of the second check valve 200 is enlarged, thereby widening the variable gap 202. As the diameter of the second check valve 200 is enlarged, the oil passage defined between the outer circumference of the second check valve 200 and the cylinder main body 100 is blocked, whereby the oil flows only through the widened gap 202. This increases the oil flow speed to reduce the pressure caused by impact.
  • the cylinder 'guide 220 and the first check valve 210 are provided with central hollow holes. Therefore, when the oil is filled in the oil chamber before the piston rod 40 is inserted in the course of manufacturing the door damper, the oil can be slowly filled along the central hollow holes, thereby preventing air bubbles that may cause the noise from being mixed with the oil.
  • the bumper 10 and the bumper fixing cap 30 are inserted into the operating space 51, pushing the piston rod 40 to compress the spring 130.
  • the spring 130 is returned to push the piston rod 40, thereby pushing the bumper 10 and the bumper-fixing cap 30 out of the operating space 51 as shown in Fig. 2.
  • the bumper 10 firstly absorbs impact and then pushes the bumper-fixing cap 30 into the operating space 51.
  • the bumper fixing cap 30 pushes the piston rod 40 into the oil chamber 110 such that the oil in the oil chamber flows out through a space defined between the oil passage grooves 212 of the first and second check valves 210 and 200 and the inner wall of the housing main body 100. Then, the oil flows into a space defined by the tube guide bushing 60 while contracting the tube-shaped contracting member 65.
  • the bumper 10 firstly absorbs impact. The impact is secondly absorbed as air is exhausted out of the space 11 defined between the bumper 10 and the bumper-fixing cap 30, pushing the piston rod 40 into the oil chamber 110.
  • the impact is further attenuated as the oil quickly flows out through the space defined between the,oil passage grooves 212 of the first and second check valves 210 and 200 and the inner wall of the housing main body 100. Furthermore, when the oil quickly flows into the second check valve 200, pressure is applied to the inner wall of the check valve 200, resulting in widening the variable gap 202 while blocking other fluid passages. Therefore, the oil flows out only through the widened gap 202 to remarkably attenuate the impact.
  • the increase of pressure within the oil chamber 110 may cause the housing main body 100 to be bent in a radial direction. However, as described above, "sine the oil seal ring 75 is depressed into the oil seal 70, the leakage of the oil can be prevented.
  • the inventive door damper has advantages of avoiding the bounce of the door from the bumper and thereby preventing the noise, while realizing the quick impact absorption using the variable gap of the second check valve.
  • the leakage of the oil can be prevented to improve the reliability.
  • the noise caused by the air bubble can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un amortisseur pour porte comprenant un corps principal de logement dans lequel une chambre de lubrification est définie par un joint étanche à l'huile. Une tige de piston est introduite dans le corps principal de logement et un guide-cylindre, et des premier et second clapets de retenue sont assemblés au niveau d'une extrémité proximale de la tige de piston afin de commander le passage d'écoulement d'huile. Un ressort est placé entre la tige de piston et le corps principal de logement afin d'atténuer l'impact. Une douille de guidage d'espace est formée sur une ouverture du corps principal de logement, et un couvercle de fixation de tampon logé sur une extrémité distale de la tige du piston ainsi qu'un tampon sont associés à la douille de guidage d'espace. Un écart variable est formé sur le second clapet afin de réduire de manière efficace l'impact et un anneau de joint étanche à l'huile est déprimé dans le joint étanche à l'huile afin d'empêcher des fuites d'huile lorsque la pression appliquée est excessive.
PCT/KR2003/001114 2003-04-29 2003-06-05 Amortisseur pour porte WO2004095982A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2003-0013350 2003-04-29
KR20030013350U KR200321920Y1 (fr) 2003-04-29 2003-04-29 Amortisseur pour porte

Publications (1)

Publication Number Publication Date
WO2004095982A1 true WO2004095982A1 (fr) 2004-11-11

Family

ID=33411563

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/001114 WO2004095982A1 (fr) 2003-04-29 2003-06-05 Amortisseur pour porte

Country Status (2)

Country Link
KR (1) KR200321920Y1 (fr)
WO (1) WO2004095982A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7032271B2 (en) * 2004-04-02 2006-04-25 Jung-Hui Lin Noise control device for a steel door
US7076834B2 (en) * 2003-05-20 2006-07-18 Lushridge Incorporated Cabinet door buffer bar
EP1778049A1 (fr) * 2004-06-30 2007-05-02 Moonju Hardware Co., Ltd. Amortisseur de porte
CN103123257A (zh) * 2012-09-06 2013-05-29 浙江吉利罗佑发动机有限公司 进排气气门油封内凸缘检具及其检测方法
EP2840212A1 (fr) * 2013-06-12 2015-02-25 DORMA Deutschland GmbH Actionneur de porte ayant un élément d'équilibrage de pression
CN105179557A (zh) * 2015-10-23 2015-12-23 广东美的厨房电器制造有限公司 液压阻尼器及铰链
CN105626735A (zh) * 2016-04-11 2016-06-01 常州气弹簧有限公司 辅助回复式气弹簧
US9702176B2 (en) 2014-07-07 2017-07-11 Itt Manufacturing Enterprises Llc Spring loaded actuator assembly
CN108775754A (zh) * 2018-04-03 2018-11-09 青岛海尔特种电冰柜有限公司 一种冷柜
CN111173878A (zh) * 2020-01-22 2020-05-19 西北工业大学 一种具有自复位功能的自适应粘滞阻尼器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100960997B1 (ko) 2010-01-07 2010-06-03 주식회사 한독하이테크 가구용 쇼크업소버
KR101729917B1 (ko) * 2016-09-28 2017-04-25 삼광기업주식회사 이동식 서가용 완충장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200166578Y1 (ko) * 1999-08-12 2000-02-15 주식회사한일루브텍 쇽업소버
KR200282449Y1 (ko) * 2002-04-01 2002-07-19 (주)문주하드웨어 댐퍼

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200166578Y1 (ko) * 1999-08-12 2000-02-15 주식회사한일루브텍 쇽업소버
KR200282449Y1 (ko) * 2002-04-01 2002-07-19 (주)문주하드웨어 댐퍼

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7076834B2 (en) * 2003-05-20 2006-07-18 Lushridge Incorporated Cabinet door buffer bar
US7032271B2 (en) * 2004-04-02 2006-04-25 Jung-Hui Lin Noise control device for a steel door
EP1778049A1 (fr) * 2004-06-30 2007-05-02 Moonju Hardware Co., Ltd. Amortisseur de porte
EP1778049A4 (fr) * 2004-06-30 2012-10-17 Moonju Hardware Co Ltd Amortisseur de porte
CN103123257A (zh) * 2012-09-06 2013-05-29 浙江吉利罗佑发动机有限公司 进排气气门油封内凸缘检具及其检测方法
EP2840212A1 (fr) * 2013-06-12 2015-02-25 DORMA Deutschland GmbH Actionneur de porte ayant un élément d'équilibrage de pression
US9702176B2 (en) 2014-07-07 2017-07-11 Itt Manufacturing Enterprises Llc Spring loaded actuator assembly
CN105179557A (zh) * 2015-10-23 2015-12-23 广东美的厨房电器制造有限公司 液压阻尼器及铰链
CN105626735A (zh) * 2016-04-11 2016-06-01 常州气弹簧有限公司 辅助回复式气弹簧
CN108775754A (zh) * 2018-04-03 2018-11-09 青岛海尔特种电冰柜有限公司 一种冷柜
CN108775754B (zh) * 2018-04-03 2022-05-20 青岛海尔特种电冰柜有限公司 一种冷柜
CN111173878A (zh) * 2020-01-22 2020-05-19 西北工业大学 一种具有自复位功能的自适应粘滞阻尼器

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