GB986174A - Improvements in or relating to tensioning devices for driving chains - Google Patents

Improvements in or relating to tensioning devices for driving chains

Info

Publication number
GB986174A
GB986174A GB4917762A GB4917762A GB986174A GB 986174 A GB986174 A GB 986174A GB 4917762 A GB4917762 A GB 4917762A GB 4917762 A GB4917762 A GB 4917762A GB 986174 A GB986174 A GB 986174A
Authority
GB
United Kingdom
Prior art keywords
blade
chain
fulcrum
floating
plastics material
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
GB4917762A
Inventor
Ian Gair Duncan
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.)
BorgWarner Ltd
Original Assignee
BorgWarner 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 BorgWarner Ltd filed Critical BorgWarner Ltd
Priority to GB4917762A priority Critical patent/GB986174A/en
Priority to DE1963M0059402 priority patent/DE1245672B/en
Priority to ES0294929A priority patent/ES294929A1/en
Priority to DE1964M0073015 priority patent/DE1625114B1/en
Publication of GB986174A publication Critical patent/GB986174A/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
    • 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
    • F16H2007/0804—Leaf 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
    • F16H2007/0808—Extension 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
    • F16H2007/0863—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
    • F16H2007/0876—Control or adjustment of actuators
    • F16H2007/0882—Control or adjustment of actuators the tension being a function of temperature
    • 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

986,174. Chain-tensioning arrangements. BORG-WARNER Ltd. Dec. 16, 1963 [Dec. 31, 1962; March 28, 1963], Nos. 49177/62 and 12350/63. Heading F2Q. A chain tensioner, e.g. for a cam-shaft drive, comprises a blade 13 of plastics material, e.g. nylon or a hard synthetic rubber, approximately the width of the chain 12, one end 16 being attached to a fixed fulcrum and the other end 14 forming a floating fulcrum resting against a guide 15, and a tension spring 17 extending between the fulcrums or between the floating fulcrum and an intermediate point on the blade. The fixed fulcrum is usually adjacent the driving sprocket 10, and the working surface of the blade may be faced with a soft synthetic rubber. The plastics material of the blade will acquire a permanent set conforming to the natural line of the slack flight of the chain. The blade may be of uniform thickness along its length, or have thickened ends tapering progressively toward the centre portion. Fig. 3 shows a blade of reduced thickness adjacent its ends, the main portion 20 of the blade thickening progressively toward the centre. The portion 20 may be of channel or T section with the taper on the flange(s) 21 thereof. In another blade form, the thickness progressively reduces from the fixed fulcrum to the floating fulcrum. Blades for use with longer chain flights have a " steady " near the midpoint (Figs. 7 and 8). In Fig. 7, the floating fulcrum 18 is pin jointed at 26 to one end of a slide 27 bearing against a fixed surface 28, a link 30 being pin jointed to the other end of slide 27 and to the blade mid-point. Fig. 8 shows a single flexible member 33 pin jointed at 26 to the floating fulcrum and at 34 to the blade midpoint, the spring 32 connecting the ends of member 33. The pin 34 may be omitted to give a sliding contact. Members 27 and 33 are preferably of a high friction plastics material to provide damping. To obviate flutter of roller chains, the fixed fulcrum end may be shaped to follow the chain path where the chain tends to cling to the driving sprocket as it leaves the latter.
GB4917762A 1962-12-31 1962-12-31 Improvements in or relating to tensioning devices for driving chains Expired GB986174A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4917762A GB986174A (en) 1962-12-31 1962-12-31 Improvements in or relating to tensioning devices for driving chains
DE1963M0059402 DE1245672B (en) 1962-12-31 1963-12-27 Chain tensioner
ES0294929A ES294929A1 (en) 1962-12-31 1963-12-30 Improvements in or relating to tensioning devices for driving chains
DE1964M0073015 DE1625114B1 (en) 1962-12-31 1964-01-22 Chain tensioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4917762A GB986174A (en) 1962-12-31 1962-12-31 Improvements in or relating to tensioning devices for driving chains

Publications (1)

Publication Number Publication Date
GB986174A true GB986174A (en) 1965-03-17

Family

ID=10451449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4917762A Expired GB986174A (en) 1962-12-31 1962-12-31 Improvements in or relating to tensioning devices for driving chains

Country Status (3)

Country Link
DE (1) DE1245672B (en)
ES (1) ES294929A1 (en)
GB (1) GB986174A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1750684C (en) 1967-05-31 1973-05-30 Borg Warner Ltd , Letchworth, Hert fordshire (Großbritannien) Chain tensioner
DE1750685C3 (en) * 1968-05-25 1973-06-28 Borg Warner Ltd Chain tensioner
GB2232742A (en) * 1989-06-12 1990-12-19 Borg Warner Automotive Chain tensioner
US5055088A (en) * 1990-06-08 1991-10-08 Borg-Warner Automotive, Inc. Spring blade chain tensioner

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298687A1 (en) * 1975-01-22 1976-08-20 Ouest Cie Produits Ind Tensioner for distributor chain in IC engines - contains plastics fitting and shock absorption elements
JPS6011266B2 (en) * 1975-10-20 1985-03-25 株式会社クボタ Shock absorber for wrapped rotating transmission equipment
DE3525746A1 (en) * 1985-07-19 1987-01-22 Klifa Gmbh & Co Chain tensioner
DE3706136C1 (en) * 1987-02-26 1988-09-15 Porsche Ag Process for manufacturing a chain tensioner
US4826468A (en) * 1987-11-18 1989-05-02 Klifa Fahrzeugteile Gmbh & Co. Chain tensioner
DE19523912A1 (en) * 1995-06-30 1997-03-27 Bosch Gmbh Robert Guide rail, in particular tensioning rail for a camshaft drive of an internal combustion engine
DE19721199C1 (en) * 1997-05-21 1998-11-19 Daimler Benz Ag Chain drive tensioner made of fibre-reinforced injection-moulded plastic
DE19723511A1 (en) * 1997-06-05 1998-12-10 Porsche Ag Slide rail for guiding and / or tensioning a chain
JP4084480B2 (en) * 1998-12-07 2008-04-30 本田技研工業株式会社 V-type internal combustion engine for vehicles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273823A (en) * 1926-04-12 1927-07-12 John Weller Improvements in tensioning devices for transmission chains and the like
GB684813A (en) * 1950-03-09 1952-12-24 Gen Motors Corp Improvements relating to chain drive mechanisms
GB908694A (en) * 1958-04-02 1962-10-24 Birmingham Small Arms Co Ltd Improvements in or relating to motor cycles and the like
GB907983A (en) * 1958-05-01 1962-10-10 Birmingham Small Arms Co Ltd Improvements in or relating to chain tensioners

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1750684C (en) 1967-05-31 1973-05-30 Borg Warner Ltd , Letchworth, Hert fordshire (Großbritannien) Chain tensioner
DE1750685C3 (en) * 1968-05-25 1973-06-28 Borg Warner Ltd Chain tensioner
GB2232742A (en) * 1989-06-12 1990-12-19 Borg Warner Automotive Chain tensioner
GB2232742B (en) * 1989-06-12 1993-05-12 Borg Warner Automotive Chain tensioner
US5055088A (en) * 1990-06-08 1991-10-08 Borg-Warner Automotive, Inc. Spring blade chain tensioner
DE4114948B4 (en) * 1990-06-08 2005-12-22 Borg-Warner Automotive Transmission & Engine Components Corp., Sterling Heights chain tensioner

Also Published As

Publication number Publication date
ES294929A1 (en) 1964-04-16
DE1245672B (en) 1967-07-27

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