WO2009053167A3 - Hydraulic chain tensioner having detent device - Google Patents

Hydraulic chain tensioner having detent device Download PDF

Info

Publication number
WO2009053167A3
WO2009053167A3 PCT/EP2008/062160 EP2008062160W WO2009053167A3 WO 2009053167 A3 WO2009053167 A3 WO 2009053167A3 EP 2008062160 W EP2008062160 W EP 2008062160W WO 2009053167 A3 WO2009053167 A3 WO 2009053167A3
Authority
WO
WIPO (PCT)
Prior art keywords
chain tensioner
hydraulic chain
protrusion
clamp plunger
oil pressure
Prior art date
Application number
PCT/EP2008/062160
Other languages
German (de)
French (fr)
Other versions
WO2009053167A2 (en
Inventor
Dominik Hofmann
Original Assignee
Schaeffler Kg
Dominik Hofmann
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 Schaeffler Kg, Dominik Hofmann filed Critical Schaeffler Kg
Publication of WO2009053167A2 publication Critical patent/WO2009053167A2/en
Publication of WO2009053167A3 publication Critical patent/WO2009053167A3/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
    • F16H7/0848—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
    • F16H2007/0806—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
    • 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

Abstract

The invention relates to a hydraulic chain tensioner having a cylinder housing (2) in which a clamp plunger (1) that can have oil pressure applied thereto is disposed such that it can travel out, and having detent means acting between the cylinder housing (2) and the clamp plunger (1) for preventing retraction in case of oil pressure loss, wherein the detent means is made of a plurality of detent rings (4) stacked in the axial direction and encompassing the clamp plunger (1) under pre-tension around a large diameter area (5), in order to slide over a protrusion (6) onto a smaller diameter area (7), so that retraction is blocked by form-fitting contact against a protrusion (8) on the housing.
PCT/EP2008/062160 2007-10-18 2008-09-12 Hydraulic chain tensioner having detent device WO2009053167A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007049856.1 2007-10-18
DE200710049856 DE102007049856A1 (en) 2007-10-18 2007-10-18 Hydraulic chain tensioner with locking device

Publications (2)

Publication Number Publication Date
WO2009053167A2 WO2009053167A2 (en) 2009-04-30
WO2009053167A3 true WO2009053167A3 (en) 2009-07-09

Family

ID=40043087

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/062160 WO2009053167A2 (en) 2007-10-18 2008-09-12 Hydraulic chain tensioner having detent device

Country Status (2)

Country Link
DE (1) DE102007049856A1 (en)
WO (1) WO2009053167A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1650620A1 (en) * 1967-08-29 1970-01-02 Auto Union Gmbh Chain tensioning device
US5931754A (en) * 1995-06-10 1999-08-03 Ina Walzlager Schaeffler Ohg Tensioner for a power transmitting member of an internal combustion engine
EP1698803A1 (en) * 2003-12-18 2006-09-06 Ntn Corporation Chain tensioner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043727A1 (en) 2004-09-10 2006-03-16 Ina-Schaeffler Kg Hydraulic chain tensioner with reduced piston pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1650620A1 (en) * 1967-08-29 1970-01-02 Auto Union Gmbh Chain tensioning device
US5931754A (en) * 1995-06-10 1999-08-03 Ina Walzlager Schaeffler Ohg Tensioner for a power transmitting member of an internal combustion engine
EP1698803A1 (en) * 2003-12-18 2006-09-06 Ntn Corporation Chain tensioner

Also Published As

Publication number Publication date
WO2009053167A2 (en) 2009-04-30
DE102007049856A1 (en) 2009-04-23

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