WO2009072481A1 - Lash adjuster - Google Patents

Lash adjuster Download PDF

Info

Publication number
WO2009072481A1
WO2009072481A1 PCT/JP2008/071847 JP2008071847W WO2009072481A1 WO 2009072481 A1 WO2009072481 A1 WO 2009072481A1 JP 2008071847 W JP2008071847 W JP 2008071847W WO 2009072481 A1 WO2009072481 A1 WO 2009072481A1
Authority
WO
WIPO (PCT)
Prior art keywords
adjust screw
housing
screw
lash adjuster
adjust
Prior art date
Application number
PCT/JP2008/071847
Other languages
French (fr)
Japanese (ja)
Inventor
Makoto Yasui
Eiji Maeno
Katsuhisa Yamaguchi
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
Priority claimed from JP2008011393A external-priority patent/JP2009174341A/en
Priority claimed from JP2008280044A external-priority patent/JP2009156257A/en
Application filed by Ntn Corporation filed Critical Ntn Corporation
Priority to US12/741,231 priority Critical patent/US20100263613A1/en
Priority to DE112008003314T priority patent/DE112008003314T5/en
Publication of WO2009072481A1 publication Critical patent/WO2009072481A1/en

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Provided is an adjust screw which can be prevented from being rotated and moved in the push-in direction when a load is applied to the adjust screw in the push-in direction by rotation of a cam. The lash adjuster (1) comprises a tubular housing (12) which is inserted into a reception hole (11) opened on the upper surface of a cylinder head (2), the adjust screw (15) of which the outer periphery is provided with a male screw (14) threaded with a female screw (13) formed on the inner periphery of the housing (12), and a return spring (17) for biasing the adjust screw (15) in such a direction that the adjust screw projects upward from the housing (12), and supports an arm (7) by the projection end (19) of the adjust screw (15) projecting from the housing (12). In the lash adjuster (1), the surface of the projection end (19) of the adjust screw (15) is made of a material which is not reactive to an organic molybdenum-containing oil additive.
PCT/JP2008/071847 2007-12-07 2008-12-02 Lash adjuster WO2009072481A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/741,231 US20100263613A1 (en) 2007-12-07 2008-12-02 Lash adjuster
DE112008003314T DE112008003314T5 (en) 2007-12-07 2008-12-02 Lash adjuster

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007316769 2007-12-07
JP2007-316769 2007-12-07
JP2008011393A JP2009174341A (en) 2008-01-22 2008-01-22 Lash adjuster
JP2008-011393 2008-01-22
JP2008280044A JP2009156257A (en) 2007-12-07 2008-10-30 Lash adjuster
JP2008-280044 2008-10-30

Publications (1)

Publication Number Publication Date
WO2009072481A1 true WO2009072481A1 (en) 2009-06-11

Family

ID=40717661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/071847 WO2009072481A1 (en) 2007-12-07 2008-12-02 Lash adjuster

Country Status (1)

Country Link
WO (1) WO2009072481A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120167850A1 (en) * 2009-09-08 2012-07-05 Schaeffler Technologies AG & Co. KG Assembly for a valve train of an internal combustion engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63186911U (en) * 1987-05-23 1988-11-30
JPH0315764Y2 (en) * 1983-12-28 1991-04-05
JPH0619762Y2 (en) * 1988-06-30 1994-05-25 マツダ株式会社 DOHC engine valve operating system
JP2003521624A (en) * 2000-02-02 2003-07-15 マッケクニー スペシャリスト プロダクツ リミテッド Automatic valve clearance adjustment device
JP2004245054A (en) * 2003-02-10 2004-09-02 Nissan Motor Co Ltd Lash adjuster for valve system
JP3639901B2 (en) * 2002-01-30 2005-04-20 株式会社安永 Rush adjuster
JP2005273510A (en) * 2004-03-24 2005-10-06 Ntn Corp Valve clearance automatic adjusting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0315764Y2 (en) * 1983-12-28 1991-04-05
JPS63186911U (en) * 1987-05-23 1988-11-30
JPH0619762Y2 (en) * 1988-06-30 1994-05-25 マツダ株式会社 DOHC engine valve operating system
JP2003521624A (en) * 2000-02-02 2003-07-15 マッケクニー スペシャリスト プロダクツ リミテッド Automatic valve clearance adjustment device
JP3639901B2 (en) * 2002-01-30 2005-04-20 株式会社安永 Rush adjuster
JP2004245054A (en) * 2003-02-10 2004-09-02 Nissan Motor Co Ltd Lash adjuster for valve system
JP2005273510A (en) * 2004-03-24 2005-10-06 Ntn Corp Valve clearance automatic adjusting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120167850A1 (en) * 2009-09-08 2012-07-05 Schaeffler Technologies AG & Co. KG Assembly for a valve train of an internal combustion engine
US8776750B2 (en) * 2009-09-08 2014-07-15 Schaeffler Technologies AG & Co. KG Assembly for a valve train of an internal combustion engine

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