CA2474503A1 - Belt tensioner with pivot bushing - Google Patents

Belt tensioner with pivot bushing Download PDF

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Publication number
CA2474503A1
CA2474503A1 CA002474503A CA2474503A CA2474503A1 CA 2474503 A1 CA2474503 A1 CA 2474503A1 CA 002474503 A CA002474503 A CA 002474503A CA 2474503 A CA2474503 A CA 2474503A CA 2474503 A1 CA2474503 A1 CA 2474503A1
Authority
CA
Canada
Prior art keywords
belt
tensioner
support member
arm
bushing
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.)
Granted
Application number
CA002474503A
Other languages
French (fr)
Other versions
CA2474503C (en
Inventor
James G. Quintus
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.)
Dayco IP Holdings LLC
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27660160&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2474503(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2474503A1 publication Critical patent/CA2474503A1/en
Application granted granted Critical
Publication of CA2474503C publication Critical patent/CA2474503C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless 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
    • 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
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • 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

Abstract

A belt tensioner for a power transmission belt (12) is provided that operates on an endless path and that utilizes asymmetrical motion control. The belt tensioner (14) has an arm (18) with a belt engaging section (22) and a drum section, a support member (16) for securing the tensioner (14) relative to the belt (12), where the arm (18) pivots about the support member (16), and a tension spring (20) that urges the arm (18) to pivot about the support member (16) in a first direction and urges the belt engaging section (22) against the belt (12) with a force to tension the belt. The belt tensioner (14) further comprises a cavity (26) between the arm (18) and the support member (16) and a bushing (30) comprising a bowed flange (32) positioned in the cavity (26).

Claims (10)

1. A tensioner for a power transmission belt (12) that operates on an endless path, the tensioner (14) characterized by:
an arm (18) comprising a belt engaging section (22) and a drum section;
a support member (16) for securing the tensioner (14) relative to the belt (12), the arm (18) pivoting about the support member (16);
a spring (20) that urges the arm (18) to pivot about the support member (16) in a first direction and urges the belt engaging section (22) against the belt (12) with a force to tension the belt;
a cavity (26) between the arm (18) and the support member (16); and a bushing (30) comprising a bowed flange (32) positioned in the cavity (26).
2. The tensioner of claim 1, the bushing (30) further characterized by cutout sections (34) in the bowed flange (32).
3. tensioner of claim 1, characterized in that the bushing (30) is made of a nylon material, or is made of a moldable material.
4. The tensioner of any of claims 1-3, characterized in that the bowing of the flange (32) biases the bushing (30) axially along a longitudinal axis, especially against the arm (18).
5. The tensioner of any of claims 1-4, characterized in that the bushing (30) has an inner surface (33B) with a fixed diameter and an outer surface (33A) that is tapered.
6. The tensioner of any of claims 1-5, characterized in that the spring (20) is a flat, spiral wound spring, and may comprise a free wound end, wherein one end of the spring is axially displaced from the free wound end.
7. The tensioner of any of claims 1-6, characterized in that the support member (16) comprises a housing (19) for the spring (20), and/or in that the support member (16) comprises a hub (28) about which the arm (18) pivots.
8. The tensioner of any of claims 1-7, characterized in that the belt engaging section (22) includes a pulley.
9. A method of utilizing a tensioner (14) for a power transmission belt (12) that operates on an endless path, the method characterized by the steps of:
providing an arm (18) comprising a belt engaging section (22) and a drum section;
providing a support member (16) for securing the tensioner (14) relative to the belt (12), the arm (18) pivoting about the support member (16);
providing a spring (20) that urges the arm (18) to pivot about the support member (16) in a first direction and urges the belt engaging section (22) against the belt (12) with a force to tension the belt;
providing a cavity (26) between the arm (18) and the support member (16); and providing a bushing (30) comprising a bowed flange (32) positioned in the cavity (26).
10. ~A tensioner for a power transmission belt (12) that operates on an endless path, the tensioner (14) comprising an arm (18) including a belt engaging section (22) and a drum section, a support member (16) securing the tensioner (14) relative to the belt (12), the support member (16) comprising a hub (28) having a longitudinal axis and being fixed from movement relative to the belt engaging section -11-~

(22), the hub (28) moveably holding the arm (18), a spring (20) operatively interconnected to the arm (18) and the support member (16), the spring (20) being configured to urge the belt engaging section (22) relative to the support member (16) and against the belt (12) with a force to tension the belt, the improvement wherein the tensioner is further characterized by:
a cavity (26) between the arm (18) and the support member (16); and a bushing (30) comprising a bowed flange (32) positioned in the cavity (26).
CA2474503A 2002-02-14 2003-02-05 Belt tensioner with pivot bushing Expired - Fee Related CA2474503C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/075,898 2002-02-14
US10/075,898 US6682452B2 (en) 2002-02-14 2002-02-14 Belt tensioner with pivot bushing
PCT/US2003/003544 WO2003069186A2 (en) 2002-02-14 2003-02-05 Belt tensioner with pivot bushing

Publications (2)

Publication Number Publication Date
CA2474503A1 true CA2474503A1 (en) 2003-08-21
CA2474503C CA2474503C (en) 2010-07-27

Family

ID=27660160

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2474503A Expired - Fee Related CA2474503C (en) 2002-02-14 2003-02-05 Belt tensioner with pivot bushing

Country Status (12)

Country Link
US (1) US6682452B2 (en)
EP (1) EP1474621B1 (en)
JP (1) JP4702766B2 (en)
KR (1) KR100635187B1 (en)
CN (1) CN100356086C (en)
AR (1) AR038827A1 (en)
AU (1) AU2003216181B2 (en)
BR (1) BRPI0307634B1 (en)
CA (1) CA2474503C (en)
ES (1) ES2375473T3 (en)
MX (1) MXPA04007942A (en)
WO (1) WO2003069186A2 (en)

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Also Published As

Publication number Publication date
MXPA04007942A (en) 2004-11-29
WO2003069186A3 (en) 2004-04-01
BRPI0307634B1 (en) 2015-06-30
US20030153422A1 (en) 2003-08-14
ES2375473T3 (en) 2012-03-01
EP1474621B1 (en) 2011-11-02
AU2003216181B2 (en) 2006-08-24
CN100356086C (en) 2007-12-19
EP1474621A2 (en) 2004-11-10
KR20040096568A (en) 2004-11-16
BR0307634A (en) 2005-08-23
AR038827A1 (en) 2005-01-26
JP4702766B2 (en) 2011-06-15
CA2474503C (en) 2010-07-27
KR100635187B1 (en) 2006-10-16
CN1633567A (en) 2005-06-29
JP2005517873A (en) 2005-06-16
AU2003216181A1 (en) 2003-09-04
WO2003069186A2 (en) 2003-08-21
EP1474621A4 (en) 2009-08-26
US6682452B2 (en) 2004-01-27

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