WO2004057211A1 - Spannvorrichtung für einen zugmitteltrieb - Google Patents
Spannvorrichtung für einen zugmitteltrieb Download PDFInfo
- Publication number
- WO2004057211A1 WO2004057211A1 PCT/EP2003/014305 EP0314305W WO2004057211A1 WO 2004057211 A1 WO2004057211 A1 WO 2004057211A1 EP 0314305 W EP0314305 W EP 0314305W WO 2004057211 A1 WO2004057211 A1 WO 2004057211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- friction
- clamping device
- drive according
- lubricant
- tensioning
- 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
- F16H7/1218—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
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
Definitions
- Tensioning device for a traction mechanism drive such as a belt drive, chain drive or the like, with a base body which can be fastened to a machine housing, in particular a crankcase of an internal combustion engine, with a tensioning roller carrier which carries a tensioning roller and which is rotatably mounted on the base body, with a torsion spring which prestresses the tensioning roller carrier relative to the base body in the sense of a displacement of the tensioning roller in the direction of the traction mechanism drive, and with friction elements, in particular a friction disk and a friction lining, which are connected on the one hand to the tensioning roller carrier and on the other hand to the base body.
- a machine housing in particular a crankcase of an internal combustion engine
- a tensioning roller carrier which carries a tensioning roller and which is rotatably mounted on the base body
- a torsion spring which prestresses the tensioning roller carrier relative to the base body in the sense of a displacement of the tensioning roller in the direction of the traction mechanism drive
- Such a generic clamping device is known from DE 44 26 666 A1.
- This clamping device has proven itself in principle.
- the friction elements which are intended to reduce oscillation of the tensioning roller and the tensioning roller carrier on the base body, also fulfill the task set for them.
- noise is generated in the area of the friction elements. Depending on the excitation of the jig due to Depending on the frequency or amplitude range, this noise can be heard in the dynamics of the traction mechanism drive as a loud "squeak" in the engine or vehicle environment.
- the object of the invention is therefore to improve a tensioning device in such a way that the disturbing noises are avoided while maintaining its function. This should be done with simple, inexpensive means.
- the object of the invention is achieved in that at least one of the friction elements has a friction surface which prevents this friction element from sticking to the other friction element.
- the adherence of one friction element to the other is prevented by the fact that the friction surface of at least one friction element is, preferably partially, provided with a lubricant. It is important to find a middle ground between very good sliding between the friction surfaces, which would impair the damping, and sticking and loosening between the friction surfaces, which creates the noise. It is also essential that the tensioning device is maintenance-free, ie that the amount of lubricant is designed for the entire operating time of the tensioning device
- the friction elements preferably the friction disk, have recesses on their flat side facing the other friction element, in which recesses the lubricant is embedded
- the depressions can be in the form of strips, spots or dots
- the recesses can also be designed as micro-recesses, which are preferably produced by means of embossing or laser action.
- the micro-recesses allow good distribution of the lubricant cells within the friction surface
- Grease with black or white solid lubricants standard grease, graphite, PTFE, solid grease or the like is preferably used as the lubricant
- one of the friction elements preferably the friction disk
- a material that is porous at least on the friction surface for which sintered metal or a cast material is well suited, and to treat it with a lubricant, for example Trankol There are no recesses
- FIG. 2 shows a side view of a friction disk facing a friction lining
- Figure 3 is a side view of the friction disc in a modified form
- Figure 4 is a side view of a further modified friction disc
- 1 denotes a basic body of a tensioning device, which is not shown attached to a machine housing, in particular a crankcase of an internal combustion engine.
- the basic body has an outer and an inner jacket, which are connected to one another at one end and form a sleeve-shaped cavity 1a.
- a shaft 2 is mounted inside the base body, which is connected in a rotationally and axially fixed manner to a tensioning tube carrier 3.
- the tensioning tube carrier 3 in turn has a bolt 4 which is arranged axially parallel to the shaft 2 and to this is arranged on the end of the shaft 2 opposite the tensioning carrier 3, a friction disk 5 is arranged, which in turn is rotatably and axially connected to the shaft 2 Between the friction disk 5 and the base body, a friction lining 6 is arranged, which is rotationally fixed to the base body connected is
- a torsion spring 7 is installed, which is connected on the one hand in a rotationally fixed manner to the basic body 1 and on the other hand in a rotationally fixed manner with the tensioning tube carrier 3, so that they have a torque between these components for tensioning a tensioning roller arranged on the bolt 4 but not shown for a traction mechanism drive, also not shown.
- the torsion spring 7 is further designed so that it exerts compressive forces in the axial direction Direction generated so that the friction disc 5 is pressed against the friction lining 6, the forces being transmitted via the tensioning roller carrier 3 and the shaft 2 on the one hand and via the base body 1 on the other. The vibrating forces from the traction mechanism drive around the shaft 2 are damped by the friction effect between the friction disk and the friction lining.
- FIGS. 2 to 4 show the friction surface 8 of the friction disk 5 facing the friction lining 6.
- Micro-depressions 9 are provided in the friction surfaces 8 and are filled with a grease filling, explained in the general description.
- the microwells 9 in FIG. 2 are arranged in radial lines, while the microwells 9 in FIG. 3 are arranged in rows which are arranged parallel to one another and parallel to a plane passing through the axis.
- the microwells 9 in FIG. 4 are also arranged in rows, which, however, are arranged differently.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Friction Gearing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003296655A AU2003296655A1 (en) | 2002-12-21 | 2003-12-16 | Tightening device for a flrxible gearing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260558.0 | 2002-12-21 | ||
DE2002160558 DE10260558A1 (de) | 2002-12-21 | 2002-12-21 | Spannvorrichtung für einen Zugmitteltrieb |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004057211A1 true WO2004057211A1 (de) | 2004-07-08 |
Family
ID=32404183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/014305 WO2004057211A1 (de) | 2002-12-21 | 2003-12-16 | Spannvorrichtung für einen zugmitteltrieb |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003296655A1 (de) |
DE (1) | DE10260558A1 (de) |
WO (1) | WO2004057211A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046067A1 (de) * | 2005-09-27 | 2007-03-29 | Schaeffler Kg | Spanneinrichtung für ein Zugmittel, insbesondere einen Riemen |
DE102005053215A1 (de) | 2005-11-08 | 2007-05-10 | Schaeffler Kg | Spannvorrichtung für einen Zugmitteltrieb |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0425246A1 (de) * | 1989-10-23 | 1991-05-02 | Mitsuboshi Belting Ltd. | Riemenspanner |
EP0450620A1 (de) * | 1990-04-04 | 1991-10-09 | Litens Automotive GmbH | Automatischer Riemenspanner |
DE4302773A1 (en) * | 1992-01-31 | 1993-08-05 | Dynax Corp | Wet friction part in automatic gearbox - has two sets of grooves at different angle at point between inner and outer gear |
DE19540706A1 (de) * | 1995-11-02 | 1997-05-07 | Schaeffler Waelzlager Kg | Spanneinrichtung für Zugmittel mit Konus-Gleitlager |
DE10055594A1 (de) * | 2000-11-09 | 2002-05-23 | Ina Schaeffler Kg | Reibscheibenspannvorrichtung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5182963A (en) * | 1991-08-27 | 1993-02-02 | Orscheln Co. | Soft release control mechanism with spring clutch and viscous damping |
JP3477482B2 (ja) * | 1994-07-12 | 2003-12-10 | 光洋精工株式会社 | オートテンショナ |
DE4426666A1 (de) * | 1994-07-28 | 1996-02-01 | Schaeffler Waelzlager Kg | Einrichtung zur Dämpfung von Federschwingungen |
DE4443103B4 (de) * | 1994-12-03 | 2004-07-15 | Ina-Schaeffler Kg | Reibfläche einer für den Einsatz in einer Riemenspanneinrichtung vorgesehenen Reibscheibe |
JP2972561B2 (ja) * | 1995-10-23 | 1999-11-08 | ユニッタ株式会社 | ベルトテンショナー |
JPH1060179A (ja) * | 1996-08-23 | 1998-03-03 | Tokai Rubber Ind Ltd | 自己潤滑ゴム組成物および防振ゴム |
DE19946057A1 (de) * | 1999-09-25 | 2001-03-29 | Schaeffler Waelzlager Ohg | Dämpfung von Reibpartnern einer mechanischen Spannvorrichtung |
JP3402461B2 (ja) * | 2000-02-24 | 2003-05-06 | ゲイツ・ユニッタ・アジア株式会社 | ベルトテンショナー |
US7588507B2 (en) * | 2001-04-13 | 2009-09-15 | Unitta Company | Thin autotensioner |
-
2002
- 2002-12-21 DE DE2002160558 patent/DE10260558A1/de not_active Ceased
-
2003
- 2003-12-16 AU AU2003296655A patent/AU2003296655A1/en not_active Abandoned
- 2003-12-16 WO PCT/EP2003/014305 patent/WO2004057211A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0425246A1 (de) * | 1989-10-23 | 1991-05-02 | Mitsuboshi Belting Ltd. | Riemenspanner |
EP0450620A1 (de) * | 1990-04-04 | 1991-10-09 | Litens Automotive GmbH | Automatischer Riemenspanner |
DE4302773A1 (en) * | 1992-01-31 | 1993-08-05 | Dynax Corp | Wet friction part in automatic gearbox - has two sets of grooves at different angle at point between inner and outer gear |
DE19540706A1 (de) * | 1995-11-02 | 1997-05-07 | Schaeffler Waelzlager Kg | Spanneinrichtung für Zugmittel mit Konus-Gleitlager |
DE10055594A1 (de) * | 2000-11-09 | 2002-05-23 | Ina Schaeffler Kg | Reibscheibenspannvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE10260558A1 (de) | 2004-07-01 |
AU2003296655A1 (en) | 2004-07-14 |
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