WO1994005932A1 - Auto-tensioner - Google Patents
Auto-tensioner Download PDFInfo
- Publication number
- WO1994005932A1 WO1994005932A1 PCT/JP1993/001201 JP9301201W WO9405932A1 WO 1994005932 A1 WO1994005932 A1 WO 1994005932A1 JP 9301201 W JP9301201 W JP 9301201W WO 9405932 A1 WO9405932 A1 WO 9405932A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- shaft
- cylindrical portion
- pulley
- bully
- Prior art date
Links
- 241000543375 Sideroxylon Species 0.000 claims description 11
- 241000238413 Octopus Species 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16H7/10—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
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
-
- 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
- F16H2007/084—Means for varying tension of belts, ropes, or chains with vibration damping means having vibration damping characteristics dependent on the moving direction of the tensioner
Definitions
- the present invention relates to an auto-tensioner that maintains a constant tension of a timing belt for driving a camshaft of an automobile engine.
- the auto-tensioner is fixed to the support shaft 32 by tightening a bolt 31 screwed into a base 30 such as an engine hook.
- a pulley 35 is mounted on a bully support 3 3 with the i-center position supported by 2 via rolling bearings 3 4 so that it can roll freely.
- the cylindrical part 36 arranged on the upper part is integrally provided, and the tension adjusting spring 39 is connected to the arm part 38 of the bracket 37 press-fitted outside the cylindrical part 36, and the pulley 35 is belted.
- the plastic support 33 is swung in the direction in which it is stretched.
- a damper mechanism 40 using a viscous fluid is provided between the cylindrical portion 36 and the support shaft 32, and the damper mechanism 40 imparts a swing resistance to the pulley support 33, They control short-term fluctuations of the belt.
- a bully support 33 having a cylindrical portion 36 has a eccentric cylindrical body having two central axes a and b, as shown in FIG. Therefore, there is the disadvantage that the processing is extremely troublesome and the processing cost is expensive.
- An object of the present invention is to solve the above-mentioned inconveniences, to facilitate the processing of the pulley support of the auto tensioner, and to reduce the cost.
- a pulley support having a cylindrical portion is provided with an eccentric ring in which the axis of the inner surface is centered with respect to the axis of the outer surface, and a cylindrical portion.
- a structure in which a cylindrical small-diameter shaft portion which is inserted into the inside of the eccentric ring and is prevented from rotating is provided integrally with a driving shaft which is provided at one end and the other end of the cylindrical portion is adopted.
- FIG. 1 is a front view showing an embodiment of an automatic tensioner according to the present invention.
- Fig. 2 is a longitudinal side view of the above
- FIG. 3 is a sectional view taken along the line I I I-I I I of FIG. 2,
- Fig. 4 is a perspective view of the bully support
- FIG. 5 is a vertical side view showing another embodiment of the auto tensioner according to the present invention
- FIG. 6 is a vertical side view showing a conventional auto tensioner
- FIG. 7 is a perspective view showing the bully support of the above.
- FIGS. 1 to 4 show an example in which the automatic tensioner according to the present invention is used for adjusting the tension of a camshaft driving belt of an automobile engine. As shown, the engine
- a cylindrical support shaft 3 is fixed to the side of 1 by tightening a bolt 2.
- the support shaft 3 has a large-diameter shaft portion 4 at the end on the engine block 1 side. This support shaft
- An eccentric position of the pulley support 6 is supported on the outer side of 3 via a bearing 5 so as to be able to roll freely.
- the bulge support 6 is formed of an eccentric ring 7 in which the axis of the inner surface is eccentric with respect to the axis of the outer surface, and a driving shaft 8 coupled to the eccentric ring 7.
- the oscillating shaft ⁇ has a cylindrical portion 8a disposed concentrically outside the large-diameter shaft portion 4 at one end, and is supported by the bearing 5 at the other end of the cylindrical portion 8a so as to be freely rolling.
- the small-diameter shaft portion 8 b is integrally provided, and the small-diameter shaft portion 8 b is press-fitted to the ⁇ side of the eccentric ring 7 and is stopped.
- a serration may be formed on the inner circumference of the eccentric ring 7 or the inner circumference of the eccentric ring 7 and the outer circumference of the small diameter shaft portion 3b.
- a raceway groove 9 is provided on the outer periphery of the eccentric ring 7.
- a plurality of balls 1 I are incorporated between 10 raceway grooves 10 a, and a boogie 13 for applying tension to a belt 12 is attached to the outer ring 10.
- a connecting piece 14 is provided on the cylindrical portion 8 a of the swing shaft 8, and a tension adjusting spring 15 as a tension applying means is connected to the connecting piece 14.
- the tension adjusting spring 15 swings the pulley support 6 in a direction in which the pulley 13 stretches the belt 12.
- the damper mechanism 20 has a plurality of circumferentially inclined cam surfaces 2I formed on the outer periphery of the large-diameter shaft portion 4, and a wedge provided between the cam surface 21 and the cylindrical inner surface of the cylindrical portion 8a.
- a friction member 23 having the same shape as that of the wedge-shaped space 22 and a spring member 24 for pressing the friction member 23 toward a narrow portion of the wedge-shaped space 22 are formed in the shape space 22. Is incorporated.
- the pulley support 6 is formed by an eccentric ring 7 and a swinging shaft 8, and the driving shaft 8 has a cylindrical small diameter at the other end of the cylindrical portion 8a as shown in FIG. Since the shaft portion 8b has a simple shape provided on the same shaft, the driving shaft 8 can be formed by a cost-reducing method of pressing metal ⁇ , thereby reducing cost. Reduction can be achieved.
- track grooves 9 and 10 are formed on the outer circumference of the eccentric ring 7 and the inner circumference of the burry 13.
- a ball 11 is inserted between the raceway grooves 3 and 10 to support the pulley freely, and a pair of shafts 8a between the cylindrical portion 8a of the driving shaft 8 and the large-diameter shaft portion 4.
- a damper mechanism 20 that forms a space 26 sealed by the seals 25 and 25 and imparts a swing resistance to the pulley support 6 by viscous fluid filled between the spaces 26 is provided. Make up.
- the outer diameter of the pulley 13 can be reduced by omitting the outer ring 10 in FIG. 2, and conversely, the outer diameter of the burry 13 is the same as that of the pulley 13 in FIG. If the diameter is made larger, the eccentricity of the center axis of the inner diameter surface with respect to the center axis of the outer diameter surface of the center ring 7 can be increased, and the advantage that the swing amount of the pulley 13 can be increased. is there.
- the bulging support is formed by the eccentric ring and the swing shaft, so that the eccentric ring and the swing shaft having a simple shape are formed.
- a bully support having two central axes can be formed by the combination of the above, so that the manufacture of each part is easy and the processing cost can be reduced.
- the connecting piece for providing the elasticity of the tension applying means is provided integrally with the cylindrical part of the swing shaft, the means for applying tension to the bracket connecting piece fitted to the cylindrical part of the pulley support is provided.
- the elasticity of the tension applying means can be transmitted to the pulley support more reliably than the auto tensioner which applies elasticity, thereby improving reliability and reducing costs due to a reduction in the number of parts. Can achieve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69306928T DE69306928T2 (de) | 1992-08-28 | 1993-08-26 | Selbstspanneinrichtung |
EP93919576A EP0609462B1 (en) | 1992-08-28 | 1993-08-26 | Auto-tensioner |
US08/211,629 US5399124A (en) | 1992-08-28 | 1993-08-26 | Autotensioner |
KR1019940701420A KR100218639B1 (ko) | 1992-08-28 | 1993-08-26 | 오토텐셔너 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992060726U JP2596625Y2 (ja) | 1992-08-28 | 1992-08-28 | オートテンショナ |
JP4/60726U | 1992-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994005932A1 true WO1994005932A1 (en) | 1994-03-17 |
Family
ID=13150577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001201 WO1994005932A1 (en) | 1992-08-28 | 1993-08-26 | Auto-tensioner |
Country Status (6)
Country | Link |
---|---|
US (1) | US5399124A (ja) |
EP (1) | EP0609462B1 (ja) |
JP (1) | JP2596625Y2 (ja) |
KR (1) | KR100218639B1 (ja) |
DE (1) | DE69306928T2 (ja) |
WO (1) | WO1994005932A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007124986A1 (de) * | 2006-04-27 | 2007-11-08 | Schaeffler Kg | Zugmitteltrieb für maschinenteile und antriebsaggregate |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2813162B2 (ja) * | 1995-04-13 | 1998-10-22 | エヌティエヌ株式会社 | オートテンショナ |
US5759125A (en) * | 1996-06-21 | 1998-06-02 | Clark Equipment Company | Eccentrically supported tensioner |
GB2314905A (en) * | 1996-07-03 | 1998-01-14 | Ford Motor Co | Tensioning a drive belt |
DE19634343C2 (de) * | 1996-08-24 | 2003-01-02 | Daimler Chrysler Ag | Spanneinrichtung für Zugmittel mit festgelegtem Spannweg |
IT1291485B1 (it) * | 1997-01-31 | 1999-01-11 | Dayco Europe Spa | Tenditore per una cinghia di trasmissione. |
DE19739816B4 (de) * | 1997-09-11 | 2005-07-28 | Skf Gmbh | Tragkörper für Spannvorrichtungen |
CA2323549C (en) | 1998-03-13 | 2007-06-05 | Litens Automotive Partnership | Belt tensioner with reduced tilt action on support structure and method for installing the same |
AU5723999A (en) | 1998-09-18 | 2000-04-10 | Litens Automotive Partnership | Belt tensioner and method of installing the same |
US6160151A (en) * | 1999-12-08 | 2000-12-12 | Nusil Technology | Process for production of diphenyl-dialkoxysilane, phenylalkyl-dialkoxysilane, octaphenylcyclotetrasilozane and sym-tetraalkyltetraphenyl-cyclotetrasiloxane |
US7229374B2 (en) * | 2001-12-20 | 2007-06-12 | Dayco Products, Llc | Dual friction surface asymmetric damped tensioner |
US20030119616A1 (en) * | 2001-12-20 | 2003-06-26 | Meckstroth Richard J. | Dual friction surface asymmetric damped tensioner |
US6863631B2 (en) * | 2001-12-20 | 2005-03-08 | Dayco Products, Llc | Unidirectional motion asymmetric damped tensioner |
DE102004058773A1 (de) * | 2004-12-07 | 2006-06-08 | Schaeffler Kg | Spannvorrichtung |
US20080287233A1 (en) | 2005-04-20 | 2008-11-20 | Dayco Europe S.R.L. Con Unico Socio | Tightener for a Belt Drive Operating in the Presence of Oil |
US20060258497A1 (en) * | 2005-05-13 | 2006-11-16 | Andrzej Dec | Tensioner |
US8852042B2 (en) * | 2011-10-03 | 2014-10-07 | Dayco Ip Holdings, Llc | Flatwire radial asymmetric damping by coil reaction path |
US20130095966A1 (en) * | 2011-10-17 | 2013-04-18 | GM Global Technology Operations LLC | Flexible rotary belt drive tensioner |
JP6457222B2 (ja) * | 2014-09-04 | 2019-01-23 | Ntn株式会社 | 摩擦式オートテンショナ |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6340657U (ja) * | 1986-08-30 | 1988-03-16 | ||
JPS63303252A (ja) * | 1987-05-30 | 1988-12-09 | Koyo Seiko Co Ltd | オ−トテンシヨナ |
JPH02445U (ja) * | 1988-06-15 | 1990-01-05 | ||
JPH04151051A (ja) * | 1990-10-11 | 1992-05-25 | Koyo Seiko Co Ltd | オートテンショナ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4832665A (en) * | 1986-12-27 | 1989-05-23 | Koyo Seiko Co., Ltd. | Tensioner |
US4923435A (en) * | 1986-12-27 | 1990-05-08 | Koyo Seiko Co., Ltd. | Chain or belt tensioner with a one-way clutch |
GB2221279B (en) * | 1988-07-22 | 1992-07-29 | Ntn Toyo Bearing Co Ltd | Belt autotensioner |
JP2881659B2 (ja) * | 1990-10-01 | 1999-04-12 | メルシャン株式会社 | 家畜用液状ビタミン剤およびその製造方法 |
US5328415A (en) * | 1992-05-29 | 1994-07-12 | Ntn Corporation | Autotensioner |
-
1992
- 1992-08-28 JP JP1992060726U patent/JP2596625Y2/ja not_active Expired - Fee Related
-
1993
- 1993-08-26 EP EP93919576A patent/EP0609462B1/en not_active Expired - Lifetime
- 1993-08-26 DE DE69306928T patent/DE69306928T2/de not_active Expired - Fee Related
- 1993-08-26 WO PCT/JP1993/001201 patent/WO1994005932A1/ja active IP Right Grant
- 1993-08-26 KR KR1019940701420A patent/KR100218639B1/ko not_active IP Right Cessation
- 1993-08-26 US US08/211,629 patent/US5399124A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6340657U (ja) * | 1986-08-30 | 1988-03-16 | ||
JPS63303252A (ja) * | 1987-05-30 | 1988-12-09 | Koyo Seiko Co Ltd | オ−トテンシヨナ |
JPH02445U (ja) * | 1988-06-15 | 1990-01-05 | ||
JPH04151051A (ja) * | 1990-10-11 | 1992-05-25 | Koyo Seiko Co Ltd | オートテンショナ |
Non-Patent Citations (1)
Title |
---|
See also references of EP0609462A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007124986A1 (de) * | 2006-04-27 | 2007-11-08 | Schaeffler Kg | Zugmitteltrieb für maschinenteile und antriebsaggregate |
Also Published As
Publication number | Publication date |
---|---|
KR100218639B1 (ko) | 1999-09-01 |
JP2596625Y2 (ja) | 1999-06-21 |
EP0609462A1 (en) | 1994-08-10 |
JPH0624249U (ja) | 1994-03-29 |
DE69306928T2 (de) | 1997-05-15 |
EP0609462A4 (en) | 1994-10-26 |
DE69306928D1 (de) | 1997-02-06 |
EP0609462B1 (en) | 1996-12-27 |
US5399124A (en) | 1995-03-21 |
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