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WO2009060794A1 - Chain tensioner - Google Patents

Chain tensioner Download PDF

Info

Publication number
WO2009060794A1
WO2009060794A1 PCT/JP2008/069870 JP2008069870W WO2009060794A1 WO 2009060794 A1 WO2009060794 A1 WO 2009060794A1 JP 2008069870 W JP2008069870 W JP 2008069870W WO 2009060794 A1 WO2009060794 A1 WO 2009060794A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
cylinder
tube body
pressure chamber
supply path
Prior art date
Application number
PCT/JP2008/069870
Other languages
French (fr)
Japanese (ja)
Inventor
Seiji Sato
Tasuku Furukawa
Original Assignee
Ntn Corporation
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 Ntn Corporation filed Critical Ntn Corporation
Publication of WO2009060794A1 publication Critical patent/WO2009060794A1/en

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
    • F16H7/0829—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
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • 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
    • F16H2007/0812—Fluid pressure
    • F16H2007/0814—Fluid pressure with valves opening on surplus pressure
    • 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
    • F16H2007/0853—Ratchets
    • 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

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

A chain tensioner (1) which has a plunger easy to process and which can be produced at low cost. The plunger (3) is slidably inserted in a cylinder (2). The cylinder (2) has an oil supply path (5) for introducing hydraulic oil into a pressure chamber (4) surrounded by the cylinder (2) and the plunger (3). A check valve (6) is provided at that end of the oil supply path (5) which is on the pressure chamber (4) side. A register ring (14) is received in a receiving groove (15) formed in the inner periphery at an open end of the cylinder (2). Engagement grooves (16) with which the register ring (14) engages are arranged at axial intervals in the outer periphery of the plunger (3). A return spring (13) for urging the plunger (3) in the direction in which the plunger (3) projects from the cylinder (2) is provided in the cylinder (2). A projection end of the plunger (3), which projection end projects from the cylinder (2), presses a chain. The plunger (3) is made up of a tube body (3a) and a cap member (3b). The tube body (3a) has in its outer periphery the engagement grooves (16) and also has opposite ends open. The cap member (3b) is fitted in one end of the tube body (3a).
PCT/JP2008/069870 2007-11-07 2008-10-31 Chain tensioner WO2009060794A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-289382 2007-11-07
JP2007289382A JP5257733B2 (en) 2007-11-07 2007-11-07 Chain tensioner

Publications (1)

Publication Number Publication Date
WO2009060794A1 true WO2009060794A1 (en) 2009-05-14

Family

ID=40625687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/069870 WO2009060794A1 (en) 2007-11-07 2008-10-31 Chain tensioner

Country Status (2)

Country Link
JP (1) JP5257733B2 (en)
WO (1) WO2009060794A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180087628A1 (en) * 2016-09-26 2018-03-29 Tsubakimoto Chain Co. Tensioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017019037A1 (en) * 2015-07-28 2017-02-02 Borgwarner Inc. Two piece piston with venting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11201245A (en) * 1998-01-12 1999-07-27 Ntn Corp Chain tensioner
JP2006017214A (en) * 2004-07-01 2006-01-19 Ntn Corp Chain tensioner for motorcycle engine
WO2007040102A1 (en) * 2005-09-30 2007-04-12 Nhk Spring Co., Ltd. Tensioner
JP2007092831A (en) * 2005-09-28 2007-04-12 Honda Motor Co Ltd Tensioner lifter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11201245A (en) * 1998-01-12 1999-07-27 Ntn Corp Chain tensioner
JP2006017214A (en) * 2004-07-01 2006-01-19 Ntn Corp Chain tensioner for motorcycle engine
JP2007092831A (en) * 2005-09-28 2007-04-12 Honda Motor Co Ltd Tensioner lifter
WO2007040102A1 (en) * 2005-09-30 2007-04-12 Nhk Spring Co., Ltd. Tensioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180087628A1 (en) * 2016-09-26 2018-03-29 Tsubakimoto Chain Co. Tensioner
US10683913B2 (en) * 2016-09-26 2020-06-16 Tsubakimoto Chain Co. Tensioner

Also Published As

Publication number Publication date
JP5257733B2 (en) 2013-08-07
JP2009115226A (en) 2009-05-28

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