JPH01229152A - Tensioner with lock mechanism capable of being released by external oil pressure - Google Patents

Tensioner with lock mechanism capable of being released by external oil pressure

Info

Publication number
JPH01229152A
JPH01229152A JP5060388A JP5060388A JPH01229152A JP H01229152 A JPH01229152 A JP H01229152A JP 5060388 A JP5060388 A JP 5060388A JP 5060388 A JP5060388 A JP 5060388A JP H01229152 A JPH01229152 A JP H01229152A
Authority
JP
Japan
Prior art keywords
oil pressure
external oil
rack
piston
plunger
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.)
Granted
Application number
JP5060388A
Inventor
Nobuto Kozakura
Nobuhiro Odai
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
Priority to JP5060388A priority Critical patent/JPH01229152A/en
Publication of JPH01229152A publication Critical patent/JPH01229152A/en
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H7/0848Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H7/0848Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853Ratchets

Abstract

PURPOSE: To prevent the rattling and noise of a chain or the like by constituting so that the engagement of a piston, which is energized by a spring so as to be engaged with a rack, with the rack can be released by an external oil pressure.
CONSTITUTION: When an engine is in an operating condition, a plunger 14 is projected by the external oil pressure supplied inside an oil chamber 24 to provide tension to a chain 22 or the like. At the same time the external oil pressure acts on a piston 52, so that the piston 52 is brought into a condition having been disengaged with a rack 16, enabling the plunger 14 to be movable back and forth. When the engine is stopped, since the external oil pressure cannot be supplied, although the plunger 14 becomes freely retractable, the piston 52 engages with the rack 16, when the external oil pressure vanishes, to prevent the plunger 14 from being retracted, so that the tension of the chain 22 or the like can be maintained as it is. Thus, even if the engine is started again, since the rack 16 and the piston 52 are mechanically engaged with each other to provide tension to the chain 22 or the like, the occurrence of rattling and noise can be prevented.
COPYRIGHT: (C)1989,JPO&Japio
JP5060388A 1988-03-05 1988-03-05 Tensioner with lock mechanism capable of being released by external oil pressure Granted JPH01229152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5060388A JPH01229152A (en) 1988-03-05 1988-03-05 Tensioner with lock mechanism capable of being released by external oil pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5060388A JPH01229152A (en) 1988-03-05 1988-03-05 Tensioner with lock mechanism capable of being released by external oil pressure

Publications (1)

Publication Number Publication Date
JPH01229152A true JPH01229152A (en) 1989-09-12

Family

ID=12863542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5060388A Granted JPH01229152A (en) 1988-03-05 1988-03-05 Tensioner with lock mechanism capable of being released by external oil pressure

Country Status (1)

Country Link
JP (1) JPH01229152A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212126A1 (en) * 1991-04-11 1992-10-15 Tsubakimoto Chain Co Clamping device
JPH0586057U (en) * 1992-04-24 1993-11-19 株式会社椿本チエイン Tensioner with lock mechanism that is released by external hydraulic pressure
US5333578A (en) * 1990-10-18 1994-08-02 Honda Giken Kogyo Kabushiki Kaisha Four-cycle engine
EP0615076A1 (en) * 1993-03-12 1994-09-14 Eaton Corporation Hydraulic chain tensioner
EP0657662A2 (en) * 1993-12-06 1995-06-14 Eaton Corporation Hydraulic belt tensioner
US5531648A (en) * 1994-04-04 1996-07-02 Ford Motor Company Accessory drive system for an automotive engine
US5720684A (en) * 1995-09-06 1998-02-24 Borg-Warner Automotive, Inc. Hydraulic tensioner with internal pressure relief
US6966858B2 (en) * 2002-08-08 2005-11-22 Tsubakimoto Chain Co. Tensioner
JP2010270809A (en) * 2009-05-20 2010-12-02 Tsubakimoto Chain Co Ratchet type tensioner
JP2015230073A (en) * 2014-06-06 2015-12-21 株式会社椿本チエイン Chain tensioner

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333578A (en) * 1990-10-18 1994-08-02 Honda Giken Kogyo Kabushiki Kaisha Four-cycle engine
DE4212126A1 (en) * 1991-04-11 1992-10-15 Tsubakimoto Chain Co Clamping device
JPH0586057U (en) * 1992-04-24 1993-11-19 株式会社椿本チエイン Tensioner with lock mechanism that is released by external hydraulic pressure
EP0615076A1 (en) * 1993-03-12 1994-09-14 Eaton Corporation Hydraulic chain tensioner
EP0657662A2 (en) * 1993-12-06 1995-06-14 Eaton Corporation Hydraulic belt tensioner
EP0657662A3 (en) * 1993-12-06 1995-08-02 Eaton Corp Hydraulic belt tensioner.
US5531648A (en) * 1994-04-04 1996-07-02 Ford Motor Company Accessory drive system for an automotive engine
US5720684A (en) * 1995-09-06 1998-02-24 Borg-Warner Automotive, Inc. Hydraulic tensioner with internal pressure relief
US6966858B2 (en) * 2002-08-08 2005-11-22 Tsubakimoto Chain Co. Tensioner
JP2010270809A (en) * 2009-05-20 2010-12-02 Tsubakimoto Chain Co Ratchet type tensioner
KR101375049B1 (en) * 2009-05-20 2014-03-17 가부시기가이샤쯔바기모도체인 Ratchet-type tensioner
JP2015230073A (en) * 2014-06-06 2015-12-21 株式会社椿本チエイン Chain tensioner

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