WO2005071288A1 - 補機用オートテンショナ - Google Patents
補機用オートテンショナ Download PDFInfo
- Publication number
- WO2005071288A1 WO2005071288A1 PCT/JP2005/000965 JP2005000965W WO2005071288A1 WO 2005071288 A1 WO2005071288 A1 WO 2005071288A1 JP 2005000965 W JP2005000965 W JP 2005000965W WO 2005071288 A1 WO2005071288 A1 WO 2005071288A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- pressure
- belt
- plunger
- rod
- Prior art date
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
- F16H7/10—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
- F16H7/1236—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 fluid and restriction type, e.g. dashpot
-
- 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
- F16H2007/0814—Fluid pressure with valves opening on surplus 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
- F16H2007/0859—Check valves
Definitions
- the present invention relates to an auto-tensioner for auxiliary equipment that maintains a constant tension of an auxiliary equipment driving belt for driving an engine auxiliary equipment such as an ono-renator.
- a belt transmission for driving an engine accessory is provided with an adjusting force of an accessory auto-tensioner to the accessory driving belt so as to maintain a constant belt tension.
- Patent Document 1 As this kind of auto-tensioner for auxiliary equipment, one described in Patent Document 1 has been conventionally known.
- a seal member such as an oil seal is attached to an upper opening of a cylinder in which a bottomed sleeve is mounted to prevent leakage of hydraulic oil filled in the cylinder.
- the spring force of the return spring is applied to the rod that penetrates the seal member to slide itself, giving the rod an outward protruding property, and the pushing force applied to the rod from the belt is inserted into the cylinder. Relieve with the built-in hydraulic damper.
- a plunger is slidably incorporated in a bottomed sleeve to partition the inside of the cylinder into a pressure chamber and a reservoir chamber, and the plunger is provided with a passage communicating the pressure chamber and the reservoir chamber.
- a check valve is provided in the passage to close the passage when the pressure in the pressure chamber becomes higher than the pressure in the S reservoir chamber, and the pushing force applied to the rod by the operating oil sealed in the pressure chamber is buffered.
- the pushing force applied to the rod is greater than the spring force of the turn spring, the operating oil in the pressure chamber leaks from the leak gap formed between the plunger and the sliding surface of the bottomed sleeve into the reservoir chamber. I am trying to do it.
- an external type auto-tensioner for auxiliary equipment which includes an external type in which a return spring is incorporated outside the cylinder and an internal type in which a return spring is incorporated inside the cylinder.
- the spring constant is smaller and the spring load Since a turn spring can be adopted, the belt has a characteristic that it has good followability with respect to a change in belt tension.
- Patent Document 1 Japanese Utility Model Application No. 5-10849
- the belt expands and contracts more than the automatic tensioner for timing belts. It is designed to suppress the occurrence of leakage and to have a large amount of leakage. For this reason, there is an inconvenience that the amplitude of the belt is large even at a low load where the proof stress of the auxiliary tensioner is low.
- a seal member for preventing leakage of hydraulic oil filled in the cylinder is attached to an upper opening of a cylinder in which a bottomed sleeve is provided,
- a plunger slidable in the bottomed sleeve is connected to a lower portion of a rod slidably penetrating the seal member.
- the plunger has a pressure chamber formed below the plunger and a reservoir chamber formed above the plunger.
- a check valve is provided in this passage, which closes the passage when the pressure in the pressure chamber becomes higher than the pressure in the pressure chamber, and a rod is provided on the outside of the cylinder to protrude outward.
- a return chamber communicating with the reservoir chamber is provided below the bottomed sleeve at the bottom of the bottomed sleeve.
- the belt In the closed state of the relief valve, the belt can be pressed down with a large spring constant, so that the amplitude of the belt can be kept small.
- FIG. 1 A front view of a belt tension adjusting device using an automatic tensioner for accessories according to the present invention.
- FIG. 2 A longitudinal sectional front view of the automatic tensioner for accessories shown in FIG.
- FIG. 3 A cross-sectional view showing, in an enlarged manner, a part into which the relief valve of FIG.
- FIG. 1 shows a belt tension adjusting device employing an automatic tensioner A for auxiliary equipment according to the present invention.
- the pulley arm 1 is supported so as to be swingable, and the adjusting force of the auto tensioner A for auxiliary equipment is applied to the pulley arm 1 so that the rotatable tension pulley 3 supported at the swinging end of the pulley arm 1 is used as an auxiliary equipment. It is pressed against the drive belt 4.
- the auto tensioner for auxiliary equipment has a bottomed cylinder 11 made of an aluminum alloy, and a steel bottomed sleeve 12 is fitted inside the cylinder 11. .
- a seal member 13 composed of an oil seal is attached to the upper opening of the cylinder 11, and an air reservoir 14 is provided between the seal member 13 and the oil level of the working oil filled in the cylinder 11. .
- the seal member 13 has a rod insertion hole 15, and an arm connection piece 17 connected to the pulley arm 1 is mounted on an upper part of a slidable rod 16 inserted into the rod insertion hole 15. I have.
- the arm connecting piece 17 is provided with a spring seat 18 and a cylindrical dust cover 19 covering the outer periphery of the cylinder 11, and is provided between the spring seat 18 and the spring seat 20 provided on the outer periphery of the cylinder 11.
- the rod 16 incorporates a return spring 21 for imparting outward protrusion.
- a wear ring 22 is attached to the rod 16 at a position located inside the cylinder 11.
- the wear ring 22 is slidable along the inner peripheral surface of the cylinder 11 and supports an intermediate portion of the rod 16.
- a hydraulic damper 23 that buffers the pushing force applied to the rod 16 is provided inside the cylinder 11.
- the hydraulic damper 23 connects a plunger 24 slidable along the inner circumference of the sleeve 12 to a lower portion of the rod 16, and the plunger 24 divides the inside of the cylinder 11 into a pressure chamber 25 and a reservoir chamber 26.
- a check valve 28 is provided in the passage 27.
- the check valve 28 includes a check ball 28a for opening and closing the passage 27, a retainer 28b for regulating the opening and closing amount of the check ball 28a, and a plunger spring 28c for pressing the retainer 28b against the lower surface of the plunger 24. ing.
- This check valve 28 closes the passage 27 when the pressure in the pressure chamber 25 becomes higher than the pressure in the S reservoir chamber 26.
- a return chamber 29 is provided at the bottom of the cylinder 11 below the bottomed sleeve 12.
- the return chamber 29 communicates with the reservoir chamber 26 through a plurality of axially extending grooves 30 formed on the outer periphery of the bottomed sleeve 12.
- a plurality of axial grooves may be formed on the inner periphery of the cylinder 11 so that the return chamber 29 and the reservoir chamber 26 communicate with each other.
- a valve hole 31 that connects the pressure chamber 25 and the return chamber 29 is formed at the bottom of the bottomed sleeve 12, and a relief valve 32 is provided in the valve hole 31.
- the relief valve 32 includes a ball 33 for opening and closing the valve hole 31 and a spring 34 for pressing the ball 33 toward the valve hole 31.
- the relief valve 32 opens the valve hole 31 when the pressure in the pressure chamber 25 exceeds a set pressure.
- Hydraulic oil flows into the reservoir chamber 26 from a minute leak clearance formed between the sleeve 12 and the sliding surface of the plunger 24, and the plunger 24 and the rod 16 are moved to a position where the pushing force and the spring force of the return spring 21 are balanced. Move slowly.
- the pressure of the hydraulic oil in the pressure chamber 25 gradually increases as the pushing force applied to the rod 16 increases.
- the relief valve 32 opens the valve hole 31, and the hydraulic oil in the pressure chamber 25 flows from the valve hole 31 to the return chamber 29, The water flows from the return chamber 29 to the passage 30 and flows into the reservoir chamber 26. Therefore, the pressure in the pressure chamber 25 does not exceed the set pressure of the relief valve 32, and the belt 4 is prevented from being over-tensioned.
- the relief valve 32 for maintaining the pressure in the pressure chamber 25 at the set pressure, it is possible to prevent the belt 4 from being over-tensioned, and therefore, between the sliding surface of the sleeve 12 and the sliding surface of the plunger 24.
- the formed leak clearance can be set to a very small value, that is, the leak down time can be set to be long, and when the relief valve 32 is closed, the belt 4 can be pressed down with a large spring constant. Can be kept small.
- the tension pulley 3 When replacing the accessory belt 4, the tension pulley 3 is pressed to apply a pushing force to the rod 16, and the belt 4 is replaced in a state where the pressing of the belt 4 is released.
- the auto-tensioner A for auxiliary equipment can be contracted, so that the belt 4 can be extremely easily replaced. Can be.
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
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05704107A EP1710472A4 (en) | 2004-01-27 | 2005-01-26 | AUTOMATIC CLAMPING DEVICE FOR ACCESSORIES |
US10/585,617 US20070155554A1 (en) | 2004-01-27 | 2005-01-26 | Auto-tensioner for engine accessory |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004018591A JP2005214232A (ja) | 2004-01-27 | 2004-01-27 | 補機用オートテンショナ |
JP2004-018591 | 2004-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005071288A1 true WO2005071288A1 (ja) | 2005-08-04 |
Family
ID=34805575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000965 WO2005071288A1 (ja) | 2004-01-27 | 2005-01-26 | 補機用オートテンショナ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070155554A1 (ja) |
EP (1) | EP1710472A4 (ja) |
JP (1) | JP2005214232A (ja) |
CN (1) | CN100441913C (ja) |
WO (1) | WO2005071288A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102494113A (zh) * | 2011-12-02 | 2012-06-13 | 四川红光汽车机电有限公司 | 抗强冲击、高频振动精密传动机构 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008013129A1 (fr) * | 2006-07-27 | 2008-01-31 | Ntn Corporation | Tendeur automatique hydraulique |
DE102006054393A1 (de) * | 2006-11-18 | 2008-05-21 | Schaeffler Kg | Optimierte Dämpfung für ein hydraulisches Spannsystem |
DE102008016654B4 (de) * | 2008-04-01 | 2019-02-21 | Elringklinger Ag | Autark-Kettenspanner mit Doppeldichtring |
US8066598B2 (en) * | 2008-10-09 | 2011-11-29 | GM Global Technology Operations LLC | Chain tensioning apparatus with temperature-based leakdown |
US20100105506A1 (en) * | 2008-10-27 | 2010-04-29 | Claude Rointru | Hydraulic tensioner for a power transmission member having two modes of operation |
JP2010112426A (ja) * | 2008-11-05 | 2010-05-20 | Ntn Corp | 油圧式オートテンショナおよびベルト伝動装置 |
FR2948742B1 (fr) * | 2009-07-30 | 2013-06-28 | Hutchinson | Tendeur hydraulique pilotable |
JP5574229B2 (ja) | 2010-04-20 | 2014-08-20 | Ntn株式会社 | ベルト伝動装置 |
JP2013204767A (ja) * | 2012-03-29 | 2013-10-07 | Ntn Corp | 油圧式オートテンショナ |
JP6182411B2 (ja) * | 2013-09-26 | 2017-08-16 | Ntn株式会社 | 油圧式オートテンショナ |
JP6294851B2 (ja) * | 2015-04-03 | 2018-03-14 | 株式会社椿本チエイン | チェーンテンショナ及びリリーフバルブユニット |
JP6539564B2 (ja) * | 2015-10-26 | 2019-07-03 | Ntn株式会社 | 油圧式オートテンショナ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0510849U (ja) | 1991-07-25 | 1993-02-12 | エヌテイエヌ株式会社 | 油圧式オートテンシヨナ |
JP2001146946A (ja) * | 1999-11-19 | 2001-05-29 | Ntn Corp | チェーンテンショナ |
Family Cites Families (28)
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US1446793A (en) * | 1922-02-06 | 1923-02-27 | Roland M Gruss | Shock absorber |
US2087451A (en) * | 1935-12-13 | 1937-07-20 | Gen Motors Corp | Shock absorber |
US2564790A (en) * | 1946-07-16 | 1951-08-21 | Electro Hydraulics Ltd | Shock absorber |
US2698068A (en) * | 1950-11-10 | 1954-12-28 | Frank J Hein | Vehicle dive arrester |
US3062331A (en) * | 1960-01-04 | 1962-11-06 | Ford Motor Co | Shock absorber |
US3040841A (en) * | 1960-10-06 | 1962-06-26 | Gen Motors Corp | Hydraulic lock-out control system |
US3086622A (en) * | 1961-03-13 | 1963-04-23 | Gen Motors Corp | Hydraulic shock absorber with compression stop and hydraulic lock |
DE2551516B2 (de) * | 1975-11-17 | 1980-04-10 | Fa. August Bilstein, 5828 Ennepetal | Hydropneumatischer Einrohrschwingungsdämpfer, insbesondere Lenkungsdämpfer |
JPS58116841U (ja) * | 1982-02-01 | 1983-08-09 | カヤバ工業株式会社 | 複筒型油圧緩衝器の減衰力調整装置 |
FR2575254B1 (fr) * | 1984-12-20 | 1989-06-02 | Sirven Jacques | Amortisseur pour suspension de vehicule automobile |
IT1187848B (it) * | 1986-01-10 | 1987-12-23 | S I E T T E Soc Impianti Elett | Sospensione per veicoli con ammortizzatori idraulici interdipendenti |
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DE29508244U1 (de) * | 1995-05-18 | 1995-08-24 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Hydraulische Spannvorrichtung für einen Zugmitteltrieb |
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JP4039787B2 (ja) * | 2000-04-05 | 2008-01-30 | Ntn株式会社 | 油圧式オートテンショナ |
RU2244860C2 (ru) * | 2000-08-01 | 2005-01-20 | Дзе Гейтс Корпорейшн | Натяжной направляющий шкив |
US6533085B2 (en) * | 2001-05-31 | 2003-03-18 | Delphi Technologies, Inc. | Modular blow-off valve for automotive damper |
US6592136B2 (en) * | 2001-07-02 | 2003-07-15 | Fox Factory, Inc. | Bicycle fork cartridge assembly |
JP3707447B2 (ja) * | 2002-05-29 | 2005-10-19 | 株式会社ショーワ | 油圧式オートテンショナー |
US20020171223A1 (en) * | 2002-07-12 | 2002-11-21 | Vis Racing Sports, Inc. | Automotive suspension performance spring and system |
JP2004150602A (ja) * | 2002-10-31 | 2004-05-27 | Showa Corp | ベルトテンショナー |
US6926128B2 (en) * | 2003-06-10 | 2005-08-09 | Arvin Technologies, Inc. | Adaptive shock damping control |
-
2004
- 2004-01-27 JP JP2004018591A patent/JP2005214232A/ja active Pending
-
2005
- 2005-01-26 CN CNB2005800027728A patent/CN100441913C/zh not_active Expired - Fee Related
- 2005-01-26 EP EP05704107A patent/EP1710472A4/en not_active Withdrawn
- 2005-01-26 US US10/585,617 patent/US20070155554A1/en not_active Abandoned
- 2005-01-26 WO PCT/JP2005/000965 patent/WO2005071288A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0510849U (ja) | 1991-07-25 | 1993-02-12 | エヌテイエヌ株式会社 | 油圧式オートテンシヨナ |
JP2001146946A (ja) * | 1999-11-19 | 2001-05-29 | Ntn Corp | チェーンテンショナ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102494113A (zh) * | 2011-12-02 | 2012-06-13 | 四川红光汽车机电有限公司 | 抗强冲击、高频振动精密传动机构 |
Also Published As
Publication number | Publication date |
---|---|
JP2005214232A (ja) | 2005-08-11 |
CN100441913C (zh) | 2008-12-10 |
US20070155554A1 (en) | 2007-07-05 |
CN1910388A (zh) | 2007-02-07 |
EP1710472A1 (en) | 2006-10-11 |
EP1710472A4 (en) | 2010-04-21 |
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