IT1269942B - Dispositivo tenditore azionato da olio per cinghie dentate - Google Patents

Dispositivo tenditore azionato da olio per cinghie dentate

Info

Publication number
IT1269942B
IT1269942B ITMI941313A ITMI941313A IT1269942B IT 1269942 B IT1269942 B IT 1269942B IT MI941313 A ITMI941313 A IT MI941313A IT MI941313 A ITMI941313 A IT MI941313A IT 1269942 B IT1269942 B IT 1269942B
Authority
IT
Italy
Prior art keywords
oil
piston
low pressure
rod
chamber
Prior art date
Application number
ITMI941313A
Other languages
English (en)
Inventor
Odai Nohuhiro
Original Assignee
Tsubakimoto Chain Co
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 Tsubakimoto Chain Co filed Critical Tsubakimoto Chain Co
Publication of ITMI941313A0 publication Critical patent/ITMI941313A0/it
Publication of ITMI941313A1 publication Critical patent/ITMI941313A1/it
Application granted granted Critical
Publication of IT1269942B publication Critical patent/IT1269942B/it

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
    • 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
    • F16H7/1254—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • F16H7/129—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path with means for impeding reverse motion
    • 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
    • F16H2007/0893—Circular path
    • 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 
    • F16H7/0829—Means for varying tension of belts, ropes or chains  with vibration damping means
    • F16H7/0836—Means for varying tension of belts, ropes or chains  with vibration damping means of the fluid and restriction type, e.g. dashpot

Landscapes

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

Abstract

Un dispositivo tenditore azionato da olio è costruito con un cilindro interno che riceve uno stelo in modo tale che lo stelo stesso serve da pistone, e il diametro della camera ad alta pressione formata dallo stelo e dal cilindro è uguale a quello dello stelo. Questa configurazione elimina variazioni nel volume della camera d'olio a bassa pressione del dispositivo tenditore, mantiene una pressione dell'olio sostanzialmente costante nella camera a bassa pressione, e riduce sostanzialmente la tendenza dell'aria ad essere aspirata nella camera a bassa pressione in conseguenza del flusso d'olio fuori dalla camera a bassa pressione quando lo stelo si sposta nella direzione di sporgenza. Un pistone sullo stelo nella camera a bassa pressione, ma distanziato dalla parete della camera di una intercapedine, esercita una pressione positiva sull'olio quando lo stelo si sposta nella direzione di sporgenza o fuoriuscita per fornire ulteriore garanzia contro l'ingresso d'aria. Una valvola inclusa nel pistone si chiude quando lo stelo avanza e si apre quando lo stelo arretra, impedendo così al pistone di provocare una depressione dell'olio e di aspirare aria presso la guarnizione nella camera dell'olio a bassa pressione.
ITMI941313A 1993-06-29 1994-06-23 Dispositivo tenditore azionato da olio per cinghie dentate IT1269942B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993040305U JP2540947Y2 (ja) 1993-06-29 1993-06-29 歯付きベルト用オイル式テンショナ

Publications (3)

Publication Number Publication Date
ITMI941313A0 ITMI941313A0 (it) 1994-06-23
ITMI941313A1 ITMI941313A1 (it) 1995-12-23
IT1269942B true IT1269942B (it) 1997-04-16

Family

ID=12576913

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI941313A IT1269942B (it) 1993-06-29 1994-06-23 Dispositivo tenditore azionato da olio per cinghie dentate

Country Status (5)

Country Link
US (1) US5383813A (it)
JP (1) JP2540947Y2 (it)
KR (1) KR0137365Y1 (it)
DE (1) DE4422445A1 (it)
IT (1) IT1269942B (it)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07110056A (ja) * 1993-10-14 1995-04-25 Aisin Seiki Co Ltd オートテンショナ
US5577970A (en) * 1995-04-11 1996-11-26 Borg-Warner Automotive, Inc. Hydraulic tensioner with a pressure relief valve
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
JP3009605B2 (ja) * 1995-04-28 2000-02-14 株式会社椿本チエイン 油圧式テンショナ
US5720684A (en) * 1995-09-06 1998-02-24 Borg-Warner Automotive, Inc. Hydraulic tensioner with internal pressure relief
JP2895789B2 (ja) * 1995-12-14 1999-05-24 株式会社椿本チエイン 油圧式テンショナ
JPH09177913A (ja) * 1995-12-27 1997-07-11 Ntn Corp 油圧式オートテンショナユニット
DE19715930B4 (de) * 1996-04-17 2011-01-27 Ntn Corp. Kettenspanner
US5707309A (en) * 1997-01-23 1998-01-13 Borg-Warner Automotive, Inc. Hydraulic tensioner with modular inlet check valve with pressure relief
JP2000213608A (ja) 1998-09-11 2000-08-02 Aisin Seiki Co Ltd フリ―ピストン型オ―トテンショナ
US6666784B1 (en) * 1999-10-06 2003-12-23 Ntn Corporation Piston rod piston detector, autotensioner and belt tension adjuster
JP2001193805A (ja) * 2000-01-12 2001-07-17 Tsubakimoto Chain Co 油密封式テンショナ
JP4392930B2 (ja) * 2000-01-12 2010-01-06 株式会社椿本チエイン 油密封式テンショナ
US6634973B1 (en) 2000-03-31 2003-10-21 Borgwarner Inc. Hydraulic tensioner with two spring biased pistons and cushioned pull-back rack
JP4039787B2 (ja) * 2000-04-05 2008-01-30 Ｎｔｎ株式会社 油圧式オートテンショナ
KR100412611B1 (ko) * 2001-12-14 2003-12-31 현대자동차주식회사 다이아프램을 이용한 체인 오토 텐셔너
KR100625072B1 (ko) * 2002-01-29 2006-09-19 가부시키가이샤 제이텍트 전동 파워스티어링 장치
JP4163224B2 (ja) * 2006-07-03 2008-10-08 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 体積変化吸収器、ｘ線発生器およびｘ線撮影装置
JP5179840B2 (ja) * 2007-11-09 2013-04-10 Ｎｔｎ株式会社 チェーンテンショナ
US8181621B2 (en) * 2009-07-17 2012-05-22 Ford Global Technologies Internal combustion engine with dynamic balancing system
TWM381544U (en) * 2009-10-28 2010-06-01 Gongshun Technology Co Ltd Vehicle belt tension adjuster
KR20110090253A (ko) * 2010-02-03 2011-08-10 조현식 방화문의 가스켓 오토씰링 장치
JP5658056B2 (ja) * 2011-02-24 2015-01-21 Ntn株式会社 油圧式オートテンショナ
DE102012007637A1 (de) * 2012-04-18 2013-10-24 Claas Selbstfahrende Erntemaschinen Gmbh Vorrichtung zum Spannen eines Zugmittels einer Fördereinrichtung
JP6494311B2 (ja) * 2015-02-09 2019-04-03 Ntn株式会社 油圧式オートテンショナ
US9739348B2 (en) * 2015-10-21 2017-08-22 GM Global Technology Operations LLC Variable tensioner for cam drive
JP6539564B2 (ja) * 2015-10-26 2019-07-03 Ntn株式会社 油圧式オートテンショナ
DE102017108817A1 (de) * 2017-04-25 2018-10-25 Iwis Motorsysteme Gmbh & Co. Kg Autarke Spannvorrichtung mit Innenhülse
KR102504250B1 (ko) * 2020-08-19 2023-02-27 피디아이 주식회사 유격이 없는 창호
KR20240047333A (ko) 2020-09-22 2024-04-12 1783590 온타리오 인코포레이티드, 디.비.에이. 인모티브 인코포레이티드 변속기

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3145115C2 (de) * 1981-11-13 1983-12-08 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart "Hydraulischer Kettenspanner"
DE3217632A1 (de) * 1982-05-11 1983-11-17 Porsche Ag Hydraulischer kettenspanner
US4708696A (en) * 1985-08-30 1987-11-24 Tsubakimoto Chain Co. Tensioner for toothed drive belts
JPH0430445Y2 (it) * 1985-09-09 1992-07-22
JPS63120949A (ja) * 1986-11-06 1988-05-25 Aisin Seiki Co Ltd フリ−ピストン型オ−トテンシヨナ
JPS63145859A (ja) * 1986-12-08 1988-06-17 Aisin Seiki Co Ltd 密封式オ−トテンシヨナ
DE3715038A1 (de) * 1987-05-06 1988-11-17 Schaeffler Waelzlager Kg Hydraulische spannvorrichtung
US4874352A (en) * 1987-08-06 1989-10-17 Tsubakimoto Chain Co. Fluidic tensioner
JPH01121755U (it) * 1988-02-15 1989-08-17
JPH0454356Y2 (it) * 1988-07-14 1992-12-21
GB2221279B (en) * 1988-07-22 1992-07-29 Ntn Toyo Bearing Co Ltd Belt autotensioner
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
JPH0320750U (it) * 1989-07-10 1991-02-28
JPH0369347U (it) * 1989-11-06 1991-07-10
JPH0369348U (it) * 1989-11-06 1991-07-10
JPH0385742U (it) * 1989-12-14 1991-08-29
JPH04129946U (ja) * 1991-01-31 1992-11-30 株式会社椿本チエイン 圧力室の空気排出機構を具えた油圧装置
JPH0536159U (ja) * 1991-10-21 1993-05-18 株式会社椿本チエイン リークダウン値の温度補正機能を具えた歯付ベルト用テンシヨナ
JP2512690Y2 (ja) * 1991-10-23 1996-10-02 株式会社椿本チエイン リザ―バ内蔵のオイル作動式テンショナ
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
JPH061890U (ja) * 1992-06-10 1994-01-14 株式会社椿本チエイン 空気抜き機構付きオイル式テンショナ

Also Published As

Publication number Publication date
JPH076552U (ja) 1995-01-31
KR950001625U (ko) 1995-01-04
DE4422445A1 (de) 1995-01-12
JP2540947Y2 (ja) 1997-07-09
ITMI941313A1 (it) 1995-12-23
US5383813A (en) 1995-01-24
KR0137365Y1 (ko) 1999-04-01
ITMI941313A0 (it) 1994-06-23

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Legal Events

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

Effective date: 19970325