IT1258826B - Apparecchiatura di pressione idraulica con spazzamento dell'aria - Google Patents

Apparecchiatura di pressione idraulica con spazzamento dell'aria

Info

Publication number
IT1258826B
IT1258826B ITMI920163A ITMI920163A IT1258826B IT 1258826 B IT1258826 B IT 1258826B IT MI920163 A ITMI920163 A IT MI920163A IT MI920163 A ITMI920163 A IT MI920163A IT 1258826 B IT1258826 B IT 1258826B
Authority
IT
Italy
Prior art keywords
plunger
spring
hydraulic pressure
pressure equipment
cylinder wall
Prior art date
Application number
ITMI920163A
Other languages
English (en)
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 filed Critical
Publication of ITMI920163A0 publication Critical patent/ITMI920163A0/it
Publication of ITMI920163A1 publication Critical patent/ITMI920163A1/it
Application granted granted Critical
Publication of IT1258826B publication Critical patent/IT1258826B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B33/00—Hand tools not covered by any other group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2411—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the valve stem and rocker arm
    • 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
    • F16F9/3214—Constructional features of pistons
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H7/10—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley
    • F16H7/1209—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley with vibration damping means
    • F16H7/1236—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley with vibration damping means of the fluid and restriction type, e.g. dashpot
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H7/0848—Means for varying tension of belts, ropes or chains  with means for impeding reverse motion
    • F16H2007/0859—Check valves
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0891—Linear path

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

In un dispositivo di tensionatore idraulico, ammortizzatore o regolatore di gioco avente uno stantuffo in un cilindro riempito con fluido idraulico, e avente una molla di compressione elicoidale agente sullo stantuffo in una camera di pressione su un lato dello stantuffo, lo spazzamento o lavaggio dell'aria attraverso lo spazio ristretto tra lo stantuffo e la parete del cilindro è migliorato prevedendo gole radiali o su una faccia dello stantuffo contattata dalla molla o sulla faccia di contatto della molla di un elemento a tappo che è posizionato tra la molla e lo stantuffo. Le gole radiali consentono all'aria di fuoriuscire dall'interno della molla elicoidale e spostarsi verso la parete del cilindro. Le gole aumentano di profondità procedendo dall'interno della molla verso l'esterno di essa.
ITMI920163A 1991-01-31 1992-01-29 Apparecchiatura di pressione idraulica con spazzamento dell'aria IT1258826B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991008492U JPH04129946U (ja) 1991-01-31 1991-01-31 圧力室の空気排出機構を具えた油圧装置

Publications (3)

Publication Number Publication Date
ITMI920163A0 ITMI920163A0 (it) 1992-01-29
ITMI920163A1 ITMI920163A1 (it) 1993-07-29
IT1258826B true IT1258826B (it) 1996-02-29

Family

ID=11694621

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI920163A IT1258826B (it) 1991-01-31 1992-01-29 Apparecchiatura di pressione idraulica con spazzamento dell'aria

Country Status (4)

Country Link
US (1) US5167402A (it)
JP (1) JPH04129946U (it)
DE (1) DE4202847C2 (it)
IT (1) IT1258826B (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0550214U (ja) * 1991-12-12 1993-07-02 株式会社椿本チエイン オイルによって空気侵入経路をシールしたオイル作動式テンショナ
FR2689590B1 (fr) * 1992-04-06 1998-04-30 Hutchinson Tendeur automatique pour courroie, notamment pour courroie de transmission synchrone, comme une courroie de distribution de moteur thermique.
US5370584A (en) * 1993-01-15 1994-12-06 Borg-Warner Automotive, Inc. Piston design for removing air from a hydraulic tensioner
JP2540947Y2 (ja) * 1993-06-29 1997-07-09 株式会社椿本チエイン 歯付きベルト用オイル式テンショナ
JPH0735205A (ja) * 1993-07-23 1995-02-07 Nippon Seiko Kk オートテンショナ用ダンパ装置
DE4426845A1 (de) * 1993-07-28 1995-04-06 Nsk Ltd Dämpfervorrichtung für ein automatisches Spannelement
US5569105A (en) * 1993-07-28 1996-10-29 Nsk, Ltd. Damper apparatus for an autotensioner
US5346436A (en) * 1993-09-23 1994-09-13 Borg-Warner Automotive, Inc. Air vent for hydraulic chain tensioner
US5601505A (en) * 1994-09-12 1997-02-11 Borg-Warner Automotive, K.K. Hydraulic tensioner
JP2854261B2 (ja) * 1995-04-28 1999-02-03 株式会社椿本チエイン 油圧式テンショナ
JP2895784B2 (ja) * 1995-10-27 1999-05-24 株式会社椿本チエイン チェーンテンショナ装置
US5643117A (en) * 1995-12-08 1997-07-01 Borg-Warner Automotive, Inc. Hydraulic tensioner with check valve vent
JP3722909B2 (ja) * 1996-05-10 2005-11-30 ボルグワーナー・モールステック・ジャパン株式会社 油圧テンショナ
US5707309A (en) 1997-01-23 1998-01-13 Borg-Warner Automotive, Inc. Hydraulic tensioner with modular inlet check valve with pressure relief
US6634973B1 (en) 2000-03-31 2003-10-21 Borgwarner Inc. Hydraulic tensioner with two spring biased pistons and cushioned pull-back rack
FR2845817A1 (fr) * 2002-10-09 2004-04-16 Alstom Amortisseur hydraulique comprenant un piston avec au moins un evidement
DE102006021470A1 (de) * 2006-05-09 2007-11-15 Gustav Magenwirth Gmbh & Co. Kg Trennkolben
KR101085293B1 (ko) * 2008-10-15 2011-11-22 지엠비코리아 주식회사 자동차용 유압식 오토텐셔너
CN102459944A (zh) * 2009-06-24 2012-05-16 利滕斯汽车合伙公司 液压缓冲器及用于该液压缓冲器的活塞头组件
TWM381544U (en) * 2009-10-28 2010-06-01 Gongshun Technology Co Ltd Vehicle belt tension adjuster
EP2385271A1 (en) * 2010-05-05 2011-11-09 Gong Shun Technology Co., Ltd. A tension regulator with a pressure vessel applied to a timing belt
JP2016075334A (ja) * 2014-10-06 2016-05-12 Ntn株式会社 チェーンテンショナ、チェーンテンショナ群及びその製造方法
CN108431455B (zh) * 2015-10-06 2021-10-12 舍弗勒技术股份两合公司 用于链传动装置的液压的张紧设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB672593A (en) * 1949-10-07 1952-05-21 Gomma Antivibranti Applic Improvements relating to shock absorbers for motor vehicles
BE539383A (it) * 1954-06-30
DE2757711C2 (de) * 1977-12-23 1985-08-08 Bayerische Motoren Werke AG, 8000 München Hydraulischer Teleskopstoßdämpfer für ein Motorrad
JPS5759723Y2 (it) * 1978-04-01 1982-12-20
IT1128938B (it) * 1980-07-17 1986-06-04 Iao Industrie Riunite Spa Perfezionamenti negli ammortizzatori idraulici telescopici del tipo bitubo
CH665940A5 (de) * 1984-11-09 1988-06-30 Giroflex Entwicklungs Ag Verstellvorrichtung, insbesondere fuer neigbare und hoehenverstellbare stuehle.
US4708696A (en) * 1985-08-30 1987-11-24 Tsubakimoto Chain Co. Tensioner for toothed drive belts
JPS6319434A (ja) * 1986-07-10 1988-01-27 Nifco Inc 伸縮式オイルダンパ−
JPH01121755U (it) * 1988-02-15 1989-08-17
DE3816821A1 (de) * 1988-05-18 1989-11-23 Lisega Kraftwerktech Gmbh Hydraulische stossbremse
JPH0454356Y2 (it) * 1988-07-14 1992-12-21
JP2510338Y2 (ja) * 1988-10-18 1996-09-11 エヌティエヌ 株式会社 ベルトのオ−トテンショナ
JPH0369348U (it) * 1989-11-06 1991-07-10
DE4015708C1 (en) * 1990-05-16 1991-07-25 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Hydraulic IC engine chain tensioner - has liq. outlet limiting closure of sintered metal with incorporated throttling passages

Also Published As

Publication number Publication date
DE4202847A1 (de) 1992-08-06
ITMI920163A0 (it) 1992-01-29
DE4202847C2 (de) 1997-01-23
JPH04129946U (ja) 1992-11-30
ITMI920163A1 (it) 1993-07-29
US5167402A (en) 1992-12-01

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19951026