DE19743480B4 - Mechanical-hydraulic actuator for a belt tensioner - Google Patents
Mechanical-hydraulic actuator for a belt tensioner Download PDFInfo
- Publication number
- DE19743480B4 DE19743480B4 DE19743480A DE19743480A DE19743480B4 DE 19743480 B4 DE19743480 B4 DE 19743480B4 DE 19743480 A DE19743480 A DE 19743480A DE 19743480 A DE19743480 A DE 19743480A DE 19743480 B4 DE19743480 B4 DE 19743480B4
- Authority
- DE
- Germany
- Prior art keywords
- piston
- cylinder
- oil reservoir
- housing
- cup
- 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 - Fee Related
Links
Images
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
- 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
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- 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
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- 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
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- 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
- F16H2007/0865—Pulleys
-
- 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
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
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
Mechanisch-hydraulisches Betätigungselement (23) für einen Riemenspanner, insbesondere für Verbrennungsmotoren, mit einem Zylinder (24) und einem in diesem gleitend geführten Kolben (25), die zueinander über eine Druckfeder (34) abgestützt sind, und mit einem im Inneren des Zylinders (24) angeordneten, an einer Stirnseite durch den Kolben (25) begrenzten Druckraum (26), welcher von einem den Zylinder (24) umgebenden ringförmigen Ölvorratsraum (28) durch ein Rückschlagventil (29) getrennt ist, wobei das Rückschlagventil (29) einen Ölübertritt vom Ölvorratsraum (28) in den Druckraum (26) gestattet, während ein Ringspalt zwischen Kolben (25) und Zylinder (24) so bemessen ist, dass durch ihn unter Druckeinwirkung entgegen der Kraft der Druckfeder (34) Öl aus dem Druckraum (26) in den Ölvorratsraum (28) übertreten kann, und wobei der Ölvorratsraum (28) nach außen von einem hohlzylindrischen, mit dem Zylinder verbundenen Gehäuse (27) begrenzt ist und stirnseitig durch eine zwischen einer Innenumfangsfläche des Gehäuses (27) und einer Außenmantelfläche des Kolbens (25) angeordnete, auf dem Kolben...Mechanical-hydraulic actuating element (23) for a belt tensioner, in particular for internal combustion engines, having a cylinder (24) and a piston (25) guided in this manner, which are supported relative to one another via a compression spring (34), and with one inside the cylinder (24) arranged on a front side by the piston (25) limited pressure chamber (26) which is separated from a cylinder (24) surrounding the annular oil reservoir (28) by a check valve (29), wherein the check valve (29) a Oil passage from the oil reservoir (28) in the pressure chamber (26) allows, while an annular gap between the piston (25) and cylinder (24) is dimensioned so that by him under pressure against the force of the compression spring (34) oil from the pressure chamber (26 ) in the oil reservoir (28), and wherein the oil reservoir (28) to the outside of a hollow cylindrical, connected to the cylinder housing (27) is limited and frontally by a e between an inner peripheral surface of the housing (27) and an outer circumferential surface of the piston (25) arranged on the piston ...
Description
Anwendungsgebiet der ErfindungField of application of the invention
Die Erfindung betrifft ein mechanisch-hydraulisches Betätigungselement für einen Riemenspanner, insbesondere für Verbrennungsmotoren, mit einem Zylinder und einem in diesem gleitend geführten Kolben, die über eine Druckfeder zueinander abgestützt sind, und mit einem im Inneren des Zylinders angeordneten, an einer Stirnseite durch den Kolben begrenzten Druckraum, welcher von einem den Zylinder umgebenden ringförmigen Ölvorratsraum durch ein Rückschlagventil getrennt ist, wobei das Rückschlagventil einen Ölübertritt vom Ölvorratsraum in den Druckraum gestattet, während ein Ringspalt zwischen Kolben und Zylinder so bemessen ist, dass durch ihn unter Druckeinwirkung entgegen der Kraft der Druckfeder Öl aus dem Druckraum in den Ölvorratsraum übertreten kann, und wobei der Ölvorratsraum als nach außen von einem hohlzylindrischen, mit dem Zylinder verbundenen tassenförmigen Gehäuse begrenzt ist. Entsprechend ausgebildete Riemenspanner mit mechanisch-hydraulischen Betätigungselementen sind zur Einhaltung einer konstanten Riemenspannung mit der entsprechenden ölhydraulischen Ausgleichseinrichtung versehen und werden vorzugsweise für Riemenspanner innerhalb von Aggregatetrieben der Verbrennungsmotoren verwendet.The invention relates to a mechanical-hydraulic actuating element for a belt tensioner, in particular for internal combustion engines, with a cylinder and a slidingly guided in this piston, which are supported by a compression spring to each other, and arranged with an inside of the cylinder, on an end side by the piston limited pressure space, which is separated from a cylinder surrounding the annular oil reservoir by a check valve, wherein the check valve allows oil to pass from the oil reservoir into the pressure chamber, while an annular gap between the piston and cylinder is dimensioned so that by him under pressure against the force of the compression spring Oil can pass from the pressure chamber in the oil reservoir, and wherein the oil reservoir is limited as outwardly by a hollow cylindrical, connected to the cylinder cup-shaped housing. Appropriately designed belt tensioner with mechanical-hydraulic actuators are provided to maintain a constant belt tension with the corresponding oil hydraulic compensation device and are preferably used for belt tensioners within aggregates of internal combustion engines.
Hintergrund der ErfindungBackground of the invention
Ein entsprechendes mechanisch-hydraulisches Betätigungselement für einen Riemenspanner ist aus der
Ein weiteres mechanisch-hydraulisches Betätigungselement zeigt die
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt die Aufgabe zugrunde, die Abdichtung des ringförmigen Ölvorratsraums zu vereinfachen.The invention has for its object to simplify the sealing of the annular oil reservoir.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass das mechanisch-hydraulische Betätigungselement ein tassenförmiges Gehäuse umfasst, welches an einem gemeinsam mit dem Zylinder ausgebildeten Bauteil angreift. Das tassenförmige Gehäuse wird außenseitig von der Druckfeder umschlossen, die zwischen einer ersten dem tassenförmigen Gehäuse zugeordneten Federauflage sowie einer zweiten dem Zylinder zugeordneten Federauflage eingesetzt ist. Zur Abdichtung ist an einer Innenumfangsfläche, in einer einseitig offenen Nut des Gehäuses eine Nutringdichtung eingesetzt, die gleitend auf einer Außenmantelfläche des Kolbens abgestützt ist.According to the invention, this object is achieved in that the mechanical-hydraulic actuator comprises a cup-shaped housing which engages a component formed jointly with the cylinder. The cup-shaped housing is enclosed on the outside by the compression spring, which is inserted between a first cup-shaped housing associated spring seat and a second cylinder associated spring seat. For sealing a groove ring seal is used on an inner peripheral surface, in a groove open on one side of the housing, which is slidably supported on an outer circumferential surface of the piston.
Eine entsprechende Ausbildung des Betätigungselements ist zwar unter Umständen mit einer Verringerung des Volumens des Ölvorratsraums verbunden, das Ergebnis ist aber eine Bauweise des Betätigungselements, bei der die Anzahl der erforderlichen Bauteile reduziert werden kann. Außerdem läßt die Nutringdichtung große axiale Relativbewegungen des Kolbens gegenüber dem Gehäuse zu, so dass ein größerer Verstellweg realisierbar ist. Mit der Nutringdichtung kann ein kostengünstiges Bauteil verwendet werden, das eventuell sogar als Katalogware erhältlich ist. Vorteilhaft ist die Nutringdichtung in das Gehäuse eingepresst und an einer Außenmantelfläche des Kolbens gleitend und dichtend geführt.Although a corresponding design of the actuating element is possibly associated with a reduction in the volume of the oil reservoir, but the result is a construction of the actuating element, in which the number of required components can be reduced. In addition, the U-ring seal allows large relative axial movements of the piston relative to the housing, so that a larger adjustment is feasible. With the U-ring seal, a low-cost component can be used, which may even be available as a catalog product. Advantageously, the U-ring seal is pressed into the housing and guided on an outer circumferential surface of the piston sliding and sealing.
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnung verwiesen, die ein Ausführungsbeispiel darstellt.For further explanation of the invention reference is made to the drawing, which illustrates an embodiment.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
bei welchem zwischen einem tassenförmigen Gehäuse und einem
Kolben eine Nutringdichtung angeordnet ist.
in which between a cup-shaped housing and a
Piston a U-ring seal is arranged.
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Ein in der
In der
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Tragkonsolesupport bracket
- 22
- Schwenklagerpivot bearing
- 33
- SpannrollenhebelTensioner lever
- 44
- Drehachseaxis of rotation
- 55
- Spannrolleidler
- 66
- Riemenbelt
- 77
- Betätigungselementactuator
- 88th
- Schwenkpunktpivot point
- 99
- Angriffspunktattackpoint
- 1313
- Befestigungsaugefastening eye
- 1414
- Befestigungsaugefastening eye
- 2323
- Betätigungselementactuator
- 2424
- Zylindercylinder
- 2525
- Kolbenpiston
- 2626
- Druckraumpressure chamber
- 2727
- tassenförmiges Gehäusecup-shaped housing
- 2828
- ringförmiger Ölvorratsraumannular oil reservoir
- 2929
- Rückschlagventilcheck valve
- 3030
- Nutringdichtunggroove ring seal
- 3131
- Nutgroove
- 3232
- Flanschflange
- 3333
- Federauflagespring Plate
- 3434
- Druckfedercompression spring
- 3535
- Federauflagespring Plate
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19743480A DE19743480B4 (en) | 1996-11-04 | 1997-10-01 | Mechanical-hydraulic actuator for a belt tensioner |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19645122.1 | 1996-11-04 | ||
DE19645122 | 1996-11-04 | ||
DE19743480A DE19743480B4 (en) | 1996-11-04 | 1997-10-01 | Mechanical-hydraulic actuator for a belt tensioner |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19743480A1 DE19743480A1 (en) | 1998-05-07 |
DE19743480B4 true DE19743480B4 (en) | 2011-04-28 |
Family
ID=7810420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19743480A Expired - Fee Related DE19743480B4 (en) | 1996-11-04 | 1997-10-01 | Mechanical-hydraulic actuator for a belt tensioner |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19743480B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19940963A1 (en) * | 1999-08-28 | 2001-03-01 | Bayerische Motoren Werke Ag | Tensioning device for an enveloping drive, in particular a belt drive for auxiliary units on internal combustion engines |
US6450907B1 (en) * | 2001-03-12 | 2002-09-17 | The Gates Corporation | Inner race idler pulley tensioner |
DE10327214A1 (en) * | 2003-06-17 | 2005-01-13 | Ina-Schaeffler Kg | Spring tensioning and damping system for belt drive for accessory in internal combustion engine has chamber with restricted access for oil, acting as damping chamber |
DE102004047450A1 (en) * | 2004-09-30 | 2006-04-06 | Ina-Schaeffler Kg | Hydraulic tensioning element |
DE102005031593A1 (en) | 2005-07-06 | 2007-01-11 | Schaeffler Kg | Seal for the bearing eye of a clamping system |
DE102007036442A1 (en) | 2007-08-02 | 2009-02-05 | Schaeffler Kg | Method for producing a sliding bearing in a cast component, which is preferably designed as a tension lever of a belt tensioner and cast component itself |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4790801A (en) * | 1988-04-04 | 1988-12-13 | Ina Walzlager Schaeffler Kg | Mechanic-hydraulic actuating element for a belt tightener |
DE3741860A1 (en) * | 1987-12-10 | 1989-06-22 | Schaeffler Waelzlager Kg | Tension device for a belt |
US5107970A (en) * | 1991-04-17 | 1992-04-28 | Monroe Auto Equipment Company | High pressure sealing system and method |
DE4124500A1 (en) * | 1991-07-24 | 1993-01-28 | Kugelfischer G Schaefer & Co | Hydraulically damped tension element - has reaction face on cylinder bush to avoid extra safety pressure valve |
JPH05321994A (en) * | 1992-05-25 | 1993-12-07 | Aisin Seiki Co Ltd | Auto-tensioner |
JPH0874956A (en) * | 1994-08-31 | 1996-03-19 | Aisin Seiki Co Ltd | Automatic tensioner |
JPH08145130A (en) * | 1994-11-25 | 1996-06-04 | Toyota Motor Corp | Tensioner |
-
1997
- 1997-10-01 DE DE19743480A patent/DE19743480B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3741860A1 (en) * | 1987-12-10 | 1989-06-22 | Schaeffler Waelzlager Kg | Tension device for a belt |
US4790801A (en) * | 1988-04-04 | 1988-12-13 | Ina Walzlager Schaeffler Kg | Mechanic-hydraulic actuating element for a belt tightener |
US5107970A (en) * | 1991-04-17 | 1992-04-28 | Monroe Auto Equipment Company | High pressure sealing system and method |
DE4124500A1 (en) * | 1991-07-24 | 1993-01-28 | Kugelfischer G Schaefer & Co | Hydraulically damped tension element - has reaction face on cylinder bush to avoid extra safety pressure valve |
JPH05321994A (en) * | 1992-05-25 | 1993-12-07 | Aisin Seiki Co Ltd | Auto-tensioner |
JPH0874956A (en) * | 1994-08-31 | 1996-03-19 | Aisin Seiki Co Ltd | Automatic tensioner |
JPH08145130A (en) * | 1994-11-25 | 1996-06-04 | Toyota Motor Corp | Tensioner |
Also Published As
Publication number | Publication date |
---|---|
DE19743480A1 (en) | 1998-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: INA-SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
R020 | Patent grant now final |
Effective date: 20110729 |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120828 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120828 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140218 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140218 |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150210 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |