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WO2009060814A1 - Chain tensioner - Google Patents

Chain tensioner Download PDF

Info

Publication number
WO2009060814A1
WO2009060814A1 PCT/JP2008/070012 JP2008070012W WO2009060814A1 WO 2009060814 A1 WO2009060814 A1 WO 2009060814A1 JP 2008070012 W JP2008070012 W JP 2008070012W WO 2009060814 A1 WO2009060814 A1 WO 2009060814A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
cylinder
closed bottom
bottom tubular
fitted
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.)
Ceased
Application number
PCT/JP2008/070012
Other languages
French (fr)
Japanese (ja)
Inventor
Tadahisa Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing 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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2009060814A1 publication Critical patent/WO2009060814A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 
    • F16H7/0848—Means for varying tension of belts, ropes or chains  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
    • F16H2007/0812—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 
    • F16H7/0848—Means for varying tension of belts, ropes or chains  with means for impeding reverse motion
    • F16H2007/0857—Screw mechanisms
    • 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) produced at low production cost. A plunger (3) is axially slidably inserted in a closed bottom tubular cylinder (2) having one end open. The plunger (3) has a closed bottom tubular shape open at its insertion end for insertion into the cylinder (2). A female thread (10) is provided on the inner periphery of the plunger (3). A screw rod (12) having on its outer periphery a male screw thread (11) fitted to the female screw (10) is provided in the cylinder (2). A return spring (15) mounted between the plunger (3) and the screw rod (12) urges the plunger (3) in the direction in which the plunger (3) projects from the cylinder (2) to press a chain. The plunger (3) is constructed from a plunger body (8) and a two-part split nut (9). The plunger body (8) has a closed bottom tubular shape open at its insertion end for insertion into the cylinder (2), and the two-part split nut (9) is fitted in the plunger body (8).
PCT/JP2008/070012 2007-11-07 2008-11-04 Chain tensioner Ceased WO2009060814A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007289386A JP2009115227A (en) 2007-11-07 2007-11-07 Chain tensioner
JP2007-289386 2007-11-07

Publications (1)

Publication Number Publication Date
WO2009060814A1 true WO2009060814A1 (en) 2009-05-14

Family

ID=40625705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/070012 Ceased WO2009060814A1 (en) 2007-11-07 2008-11-04 Chain tensioner

Country Status (2)

Country Link
JP (1) JP2009115227A (en)
WO (1) WO2009060814A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317228A (en) * 2017-01-16 2018-07-24 Ntn株式会社 Chain tensioning device
CN116294471A (en) * 2023-02-27 2023-06-23 太仓正信干燥设备科技有限公司 Tensioner mechanism for double-cone vacuum dryer and double-cone vacuum dryer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5704938B2 (en) * 2011-01-31 2015-04-22 株式会社椿本チエイン Hydraulic tensioner
EP3626868A4 (en) * 2017-07-24 2020-06-10 Kuraray Co., Ltd. LIQUID CRYSTALLINE POLYESTER FIBER AND PROCESS FOR PRODUCING THE SAME

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425520U (en) * 1987-03-30 1989-02-13
JP3009470U (en) * 1994-09-26 1995-04-04 株式会社澤村製作所 Two member connection structure
JP2001124159A (en) * 1999-10-27 2001-05-08 Ntn Corp Chain tensioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425520U (en) * 1987-03-30 1989-02-13
JP3009470U (en) * 1994-09-26 1995-04-04 株式会社澤村製作所 Two member connection structure
JP2001124159A (en) * 1999-10-27 2001-05-08 Ntn Corp Chain tensioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317228A (en) * 2017-01-16 2018-07-24 Ntn株式会社 Chain tensioning device
CN108317228B (en) * 2017-01-16 2022-10-28 Ntn株式会社 Chain tensioner
CN116294471A (en) * 2023-02-27 2023-06-23 太仓正信干燥设备科技有限公司 Tensioner mechanism for double-cone vacuum dryer and double-cone vacuum dryer

Also Published As

Publication number Publication date
JP2009115227A (en) 2009-05-28

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