GB1290279A - - Google Patents

Info

Publication number
GB1290279A
GB1290279A GB1290279DA GB1290279A GB 1290279 A GB1290279 A GB 1290279A GB 1290279D A GB1290279D A GB 1290279DA GB 1290279 A GB1290279 A GB 1290279A
Authority
GB
United Kingdom
Prior art keywords
cam
chain
spring
snail
snail cam
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.)
Expired
Application number
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 DE19702030386 external-priority patent/DE2030386C3/en
Priority claimed from DE2056280A external-priority patent/DE2056280B2/en
Application filed filed Critical
Publication of GB1290279A publication Critical patent/GB1290279A/en
Expired 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
    • F16H2007/0806—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
    • F16H2007/081—Torsion 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0851—Wedges
    • 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
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0872—Sliding members
    • 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
    • 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
    • F16H7/0838—Means for varying tension of belts, ropes, or chains with vibration damping means of the dissipating material type, e.g. elastomeric spring

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

1290279 Chain tensioning devices G WINKLHOFER and O WINKLHOFER [trading as JO H WINKLHOFER & SOHNE] 11 June 1971 [19 June 1970 16 Nov 1970] 27434/71 Heading F2Q In an I.C. engine cam-shaft timing chain tensioning device in which a chain (not shown) is tensioned by a frictional self-locking snail cam 14 torsionally spring-urged at 15 in the direction of increasing radius on a tensioner blade 11 to automatically maintain correct chain tension, the tensioner blade is additionally loaded by a supplementary spring freely deflectable between limits, i.e. the maximum deflection amplitude that may occur when the tensioned chain oscillates or whips under the effect of sudden shock loads, such that the normal chain tensioning set by the snail cam is unaffected thus preventing the chain tension from being undesirably raised with consequent chain overstrain. As shown, the supplementary spring 19 is mounted between a fixed base 17 and an arm 18 which carries the snail cam 14 and is pivotably mounted on the base 17, the arm 18 having a projection 20 engaging a clearance hole 21 which defines the deflectable limits, a rubber sleeve (22) being arranged on the projection 20 (Fig. 4, not shown) to prevent chatter noise. In Fig. 2 (not shown) a torsionally loaded hollow end-face cam (114) replaces the snail cam and operates on a similar principle in which sudden shock loads are absorbed by axial movement of the cam assembly on a spring-loaded sleeve (118) limited in axial movement. In Fig. 3 (not shown) the snail cam (214) is directly mounted on the fixed base (217) and acts through a limited deflection leaf-spring (219). Figs. 4 and 5 (not shown) are similar to Figs. 1 and 3, respectively, with the additional feature that the snail cam surface and/or the tensioner blade are serrated to increase the frictional self-locking action, and the cam may be of oscillating-suppressing rubber.
GB1290279D 1970-06-19 1971-06-11 Expired GB1290279A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702030386 DE2030386C3 (en) 1970-06-19 Tensioner for endless traction devices, especially for chains
DE2056280A DE2056280B2 (en) 1970-11-16 1970-11-16 Tensioner for a belt or chain drive - tensioning arm loaded by a spring loaded toothed cam

Publications (1)

Publication Number Publication Date
GB1290279A true GB1290279A (en) 1972-09-27

Family

ID=25759309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1290279D Expired GB1290279A (en) 1970-06-19 1971-06-11

Country Status (2)

Country Link
FR (1) FR2099252A5 (en)
GB (1) GB1290279A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2331138A (en) * 1997-09-01 1999-05-12 Ontario Drive & Gear Limited Automatic tensioning apparatus
WO2007121068A1 (en) 2006-04-11 2007-10-25 Borgwarner Inc Series spring blade tensioner
US7597640B2 (en) 2005-08-15 2009-10-06 Borgwarner Inc. Long mechanical tensioner with a compliant blade spring
CN102537283A (en) * 2012-01-18 2012-07-04 哈尔滨建成集团有限公司 Non-return device for cam

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193622B1 (en) 1907-09-19 2001-02-27 Ontario Drive & Gear Limited Automatic chain tensioner
GB2331138A (en) * 1997-09-01 1999-05-12 Ontario Drive & Gear Limited Automatic tensioning apparatus
GB2331138B (en) * 1997-09-01 2001-11-14 Ontario Drive & Gear Ltd Automatic chain tensioner
US7597640B2 (en) 2005-08-15 2009-10-06 Borgwarner Inc. Long mechanical tensioner with a compliant blade spring
WO2007121068A1 (en) 2006-04-11 2007-10-25 Borgwarner Inc Series spring blade tensioner
JP2009533627A (en) * 2006-04-11 2009-09-17 ボーグワーナー・インコーポレーテッド Inline spring blade tensioner
US8057333B2 (en) 2006-04-11 2011-11-15 Borgwarner Inc. Series spring blade tensioner
CN101415968B (en) * 2006-04-11 2013-12-18 博格华纳公司 Series spring blade tensioner
CN102537283A (en) * 2012-01-18 2012-07-04 哈尔滨建成集团有限公司 Non-return device for cam

Also Published As

Publication number Publication date
FR2099252A5 (en) 1972-03-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees