DE19926613A1 - Belt tightener has two tensioning arms on pivot axle, two tensioning rollers, tensioning spring, thrust pieces, protuberance and recess, and base plate - Google Patents
Belt tightener has two tensioning arms on pivot axle, two tensioning rollers, tensioning spring, thrust pieces, protuberance and recess, and base plateInfo
- Publication number
- DE19926613A1 DE19926613A1 DE1999126613 DE19926613A DE19926613A1 DE 19926613 A1 DE19926613 A1 DE 19926613A1 DE 1999126613 DE1999126613 DE 1999126613 DE 19926613 A DE19926613 A DE 19926613A DE 19926613 A1 DE19926613 A1 DE 19926613A1
- Authority
- DE
- Germany
- Prior art keywords
- tensioning
- arms
- clamping
- base plate
- arm
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
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
- F16H7/1254—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
-
- 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
- F16H2007/0846—Means for varying tension of belts, ropes, or chains comprising a mechanical stopper
-
- 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
- F16H2007/0874—Two or more finally actuated members
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
Die vorliegende Erfindung betrifft Spanneinrichtungen für Riemen, wie sie in Riementrieben von Brennkraftmaschinen eingesetzt werden. Die Erfindung betrifft insbesondere solche Spanneinrichtungen, bei denen zwei Spannarme vorgesehen sind, die je ein Trum des Riemens belasten.The present invention relates to tensioning devices for belts, as in Belt drives are used by internal combustion engines. The invention particularly concerns those clamping devices in which two clamping arms are provided, each loading one strand of the belt.
Aus der DE 42 43 451 A1 beispielsweise ist eine Spanneinrichtung für Zug mittel wie Riemen oder Ketten bekannt geworden, bei der zwei Spannarme um eine gemeinsame Drehachse schwenkbar angeordnet sind, wobei jeder der beiden Spannarme ein Trum des Riemens belastet. Die beiden Spannarme können ohne Relativbewegung zueinander gemeinsam verschwenken, als auch relativ zueinander verschwenken. Wenn die je an einem Ende der beiden Spannarme angeordneten Spannrollen außerhalb des Riemens angeordnet sind, ist eine zwischen diesen beiden Spannarmen wirkende Spannfeder vor gesehen, die die beiden Spannarme aufeinander zu drückt. Wenn der Riemen reißt, werden die beiden Spannarme gegeneinander gefedert, wobei die Ge fahr besteht, daß die Spannrollen gegeneinander schlagen. Üblicherweise sind diese Spannrollen aus einem Kunststoff hergestellt. Wenn unter diesem Auf prall die Spannrollen brechen, besteht die Gefahr, daß abgebrochene Teile Schäden anrichten. Eine weitere Gefahr besteht darin, daß bei der Montage von Hand infolge eines Montagefehlers die beiden Spannarme aufeinander zu federn, wobei Verletzungen nicht auszuschließen sind.DE 42 43 451 A1, for example, describes a tensioning device for trains medium known as straps or chains, in which two tension arms around a common axis of rotation are pivotally arranged, each of the both tension arms loaded a strand of the belt. The two tension arms can pivot together without relative movement to each other than also pivot relative to each other. If ever at one end of the two Tensioning arms arranged tensioning rollers arranged outside the belt there is a tension spring acting between these two tension arms seen that presses the two clamping arms towards each other. If the strap tears, the two clamping arms are sprung against each other, the Ge Fahr exists that the tension rollers hit against each other. Usually are these idlers are made of plastic. If under this on if the tensioner pulleys break, there is a risk of broken parts Cause damage. Another danger is that during assembly by hand as a result of an assembly error, the two clamping arms towards each other springs, injuries cannot be excluded.
Aufgabe der vorliegenden Erfindung ist es daher, eine Spanneinrichtung nach den Merkmalen des Oberbegriffs des Anspruchs 1 anzugeben, bei der diese Nachteile behoben sind.The object of the present invention is therefore to provide a tensioning device specify the features of the preamble of claim 1, in which this Disadvantages are eliminated.
Erfindungsgemäß wird dies dadurch gelöst, daß ein zwischen den beiden Spannarmen wirkender erster Anschlag vorgesehen ist, der eine Relativbewe gung der Spannarme aufeinander zu begrenzt. Auf diese Weise ist ausge schlossen, daß die beiden Spannarme bzw. die beiden Spannrollen gegenein anderschlagen können.According to the invention, this is achieved in that a between the two Low-tension acting first stop is provided, which is a relative movement clamping arms too limited to each other. That way it is over concluded that the two tension arms or the two tension rollers against each other can strike.
Dieser erster Anschlag kann einen an dem einen Spannarm vorgesehenen Vorsprung umfassen. Dieser erste Anschlag kann auch eine an einem Span narm vorgesehene Ausnehmung umfassen, die durch Anschlagflächen be grenzt ist. Beispielsweise kann der eine Spannarm mit dem Vorsprung und der andere Spannarm mit der Ausnehmung versehen sein, wobei der Vorsprung gegen die Anschlagflächen der Ausnehmung anschlägt und dadurch die Be wegung der Spannarme aufeinander zu begrenzt.This first stop can be provided on the one clamping arm Include tab. This first stop can also be on a chip narm provided recess, which be by stop surfaces is bordered. For example, the one clamping arm with the projection and the other clamping arm may be provided with the recess, the projection strikes against the stop surfaces of the recess and thereby the loading movement of the clamping arms limited to each other.
Vorzugsweise sind die beiden Spannarme auf einer Grundplatte angeordnet, die an einem gestellfesten Element, vorzugsweise Motorblock befestigbar sind. Diese so vormontierte Spanneinrichtung kann problemlos am Motorblock befe stigt werden.The two clamping arms are preferably arranged on a base plate, which can be attached to a frame-fixed element, preferably an engine block. This pre-assembled tensioning device can be attached to the engine block without any problems be increased.
Unabhängig von dem beschriebenen ersten Anschlag kann ein zwischen einer Grundplatte der Spanneinrichtung und jeder der beiden Spannarme vorgese hener zweiter Anschlag wirksam sein, der eine unter der resultierenden Rie menkraft vollführte Schwenkbewegung des Spannarms begrenzt. Auf diese Weise sind Schwenkbewegungen des Spannarms aus dem Riementrieb her aus begrenzt, so daß auch hier ausgeschlossen ist, daß beispielsweise die Riemenscheibe gegen ein Bauteil anschlägt.Regardless of the first stop described, between one Base plate of the tensioning device and each of the two tensioning arms hener second stop be effective, the one under the resulting Rie the swivel movement of the tension arm is limited. To this Swiveling movements of the tensioning arm are from the belt drive limited from, so that here too is excluded that, for example, the Pulley strikes against a component.
Der zweite Anschlag wird vorteilhaft so angeordnet, daß der jeweils im Last trum angeordnete Spannarm unter der resultierenden Kraft des Riemens gegen den zweiten Anschlag angedrückt und gehalten wird. Demzufolge arbeitet die an diesem Spannarm angeordnete Spannrolle lediglich als Umlenkrolle. Der besondere Vorteil liegt darin, daß die Spanneinrichtung nicht in Eigenschwin gung geraten kann. Durch die zweiten Anschläge ist also sichergestellt, daß immer nur einer der beiden Spannarme seine Spannfunktion ausübt.The second stop is advantageously arranged so that each in the load against the resulting force of the belt the second stop is pressed and held. As a result, the works arranged on this tension arm tensioner pulley only as a pulley. The special advantage is that the tensioning device is not in its own state can come into play. The second stops thus ensure that only one of the two clamping arms performs its clamping function.
Der zweite Anschlag kann einen an der Grundplatte vorgesehenen Vorsprung umfassen, gegen den der Spannarm anschlägt.The second stop can have a projection provided on the base plate include, against which the tension arm strikes.
Nachstehend wird die Erfindung anhand eines in einer Figur dargestellten Ausführungsbeispieles näher erläutert.The invention is illustrated below with reference to a figure Embodiment explained in more detail.
Die einzige Figur zeigt eine erfindungsgemäße Spanneinrichtung für Riemen. Zwei Spannarme 1, 2 sind um eine gemeinsame Drehachse 3 schwenkbar an geordnet. Eine nur schematisch dargestellte Spannfeder 3a wirkt zwischen diesen beiden Spannarmen 1, 2, wobei das eine Federende 3b an dem einen Spannarm 1, und das andere Federende 3c an dem anderen Spannarm 2 ab gestützt ist. Diese Spannfeder 3a federt die beiden Spannarme 1, 2 aufeinan der zu und jeden Spannarm 1, 2 mit seiner Spannrolle 4, 5 gegen je ein Trum des nicht dargestellten Riemens an.The single figure shows an inventive tensioning device for belts. Two clamping arms 1 , 2 are arranged to pivot about a common axis of rotation 3 . A tension spring 3 a, shown only schematically, acts between these two tension arms 1 , 2 , the one spring end 3 b being supported on one tension arm 1 and the other spring end 3 c on the other tension arm 2 . This tension spring 3 a springs the two tension arms 1 , 2 to each other and each tension arm 1 , 2 with its tension roller 4 , 5 against each strand of the belt, not shown.
Die Drehachse 3 ist an einer Grundplatte 6 befestigt, die beispielsweise an einem nicht dargestellten Motorblock einer Brennkraftmaschine befestigt wer den kann. The axis of rotation 3 is attached to a base plate 6 , which, for example, attached to an engine block of an internal combustion engine, not shown, who can.
Der zweite Anschlag kann selbstverständlich auch an einem anderen gestellfe sten Bauteil, beispielsweise Motorblock, befestigt sein.The second stop can of course also be on another frame Most component, for example engine block, be attached.
Ein erster Anschlag 7 ist vorgesehen, der einen an dem Spannarm 1 vorgese henen Vorsprung 8 umfaßt, der in eine Ausnehmung 9 des anderen Span narms 2 mit Spiel in den Schwenkrichtungen der Spannarme 1, 2 eingreift. In den Schwenkrichtungen ist die Ausnehmung 9 durch Anschlagflächen 10, 11 begrenzt, gegen die der Vorsprung 8 anschlägt.A first stopper 7 is provided, which comprises a vorgese on the clamping arm 1 Henen projection 8 which engages in a recess 9 of the other clamping NARMS 2 with play in the directions of pivot of the tension arms. 1, 2 In the pivoting directions, the recess 9 is delimited by stop surfaces 10 , 11 against which the projection 8 strikes.
Ferner sind zweite Anschläge vorgesehen, die jeweils durch einen an der Grundplatte 6 vorgesehenen Vorsprung 12, 13 gebildet sind. Wenn die Span narme 1, 2 unter der resultierenden Riemenkraft aus dem Riementrieb heraus gedrückt werden, schlagen sie ggf. an ihren zugeordneten Vorsprung 12, 13 an, so daß eine weitere Schwenkbewegung aus dem Riementrieb heraus ver hindert ist.Furthermore, second stops are provided, each of which is formed by a projection 12 , 13 provided on the base plate 6 . If the span arms 1 , 2 are pressed out of the belt drive under the resulting belt force, they may strike their associated projection 12 , 13 , so that a further pivoting movement out of the belt drive is prevented.
Bei dieser Spanneinrichtung ist sichergestellt, daß die Spannarme 1, 2 unter der Kraft der Spannfeder 3a nicht gegeneinander schlagen können. Ferner ist sichergestellt, daß die beiden Spannarme 1, 2 unter der resultierenden Rie menkraft nur eine festgelegte Auslenkung aus dem Riementrieb heraus durch führen können.In this clamping device, it is ensured that the clamping arms 1, 2 can strike a under the force of the tension spring 3 not against each other. Furthermore, it is ensured that the two tensioning arms 1 , 2 can only perform a defined deflection out of the belt drive by the resulting belt force.
Ferner sind die zweiten Anschläge so im Riementrieb angeordnet, daß der jeweils im Lasttrum angeordnete Spannarm gegen den zweiten Anschlag an gedrückt und gehalten wird. Furthermore, the second stops are arranged in the belt drive so that the each tension arm arranged in the load strand against the second stop is pressed and held.
11
Spannarm
Arm
22nd
Spannarm
Arm
33rd
Drehachse
Axis of rotation
33rd
a Spannfeder
a tension spring
33rd
b Federende
b spring end
33rd
c Federende
c spring end
44th
Spannrolle
Idler pulley
55
Spannrolle
Idler pulley
66
Grundplatte
Base plate
77
erster Anschlag
first stop
88th
Vorsprung
head Start
99
Ausnehmung
Recess
1010th
Anschlagfläche
Abutment surface
1111
Anschlagfläche
Abutment surface
1212th
Vorsprung
head Start
1313
Vorsprung
head Start
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999126613 DE19926613A1 (en) | 1999-06-11 | 1999-06-11 | Belt tightener has two tensioning arms on pivot axle, two tensioning rollers, tensioning spring, thrust pieces, protuberance and recess, and base plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999126613 DE19926613A1 (en) | 1999-06-11 | 1999-06-11 | Belt tightener has two tensioning arms on pivot axle, two tensioning rollers, tensioning spring, thrust pieces, protuberance and recess, and base plate |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19926613A1 true DE19926613A1 (en) | 2000-12-14 |
Family
ID=7910893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999126613 Withdrawn DE19926613A1 (en) | 1999-06-11 | 1999-06-11 | Belt tightener has two tensioning arms on pivot axle, two tensioning rollers, tensioning spring, thrust pieces, protuberance and recess, and base plate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19926613A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004059192A1 (en) * | 2002-12-30 | 2004-07-15 | Dayco Europe S.R.L. Con Unico Socio | A two-arm belt tensioner for a belt drive |
EP1458994A2 (en) * | 2001-12-12 | 2004-09-22 | Dayco Products, Llc. | Adaptive belt tensioner system for control of reversible torque load pulley |
WO2005038297A1 (en) * | 2003-10-17 | 2005-04-28 | Dayco Europe S.R.L. | A two-armed tensioner for the drive belt of a motor vehicle |
DE102004018776A1 (en) * | 2004-04-19 | 2005-11-03 | Ina-Schaeffler Kg | Traction drive, in particular belt drive |
US9341243B2 (en) | 2012-03-29 | 2016-05-17 | Litens Automotive Partnership | Tensioner and endless drive arrangement |
US11174921B2 (en) | 2016-09-13 | 2021-11-16 | Litens Automotive Partnership | V tensioner and endless drive arrangement |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE174480C (en) * | ||||
FR409449A (en) * | 1909-02-17 | 1910-04-22 | Henri Guillou | Self-tensioning and self-regulating reel for belt, ropes and cables control |
CH148573A (en) * | 1930-03-31 | 1931-07-31 | Tuescher & Co Geb | Tensioning device for link chain drives. |
DE4243451A1 (en) * | 1992-12-22 | 1994-06-23 | Schaeffler Waelzlager Kg | Tensioner for belt or chain in combustion IC-engine |
DE4427509A1 (en) * | 1994-08-03 | 1996-02-08 | Linde Ag | Traction drive able to run in both directions of rotation |
-
1999
- 1999-06-11 DE DE1999126613 patent/DE19926613A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE174480C (en) * | ||||
FR409449A (en) * | 1909-02-17 | 1910-04-22 | Henri Guillou | Self-tensioning and self-regulating reel for belt, ropes and cables control |
CH148573A (en) * | 1930-03-31 | 1931-07-31 | Tuescher & Co Geb | Tensioning device for link chain drives. |
DE4243451A1 (en) * | 1992-12-22 | 1994-06-23 | Schaeffler Waelzlager Kg | Tensioner for belt or chain in combustion IC-engine |
DE4427509A1 (en) * | 1994-08-03 | 1996-02-08 | Linde Ag | Traction drive able to run in both directions of rotation |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1458994A2 (en) * | 2001-12-12 | 2004-09-22 | Dayco Products, Llc. | Adaptive belt tensioner system for control of reversible torque load pulley |
EP1458994A4 (en) * | 2001-12-12 | 2006-11-15 | Dayco Products Llc | Adaptive belt tensioner system for control of reversible torque load pulley |
AU2002357804B2 (en) * | 2001-12-12 | 2008-03-06 | Dayco Ip Holdings, Llc | Adaptive belt tensioner system for control of reversible torque load pulley |
WO2004059192A1 (en) * | 2002-12-30 | 2004-07-15 | Dayco Europe S.R.L. Con Unico Socio | A two-arm belt tensioner for a belt drive |
US7901310B2 (en) | 2002-12-30 | 2011-03-08 | Dayco Europe S.R.L. | Two-arm belt tensioner for a belt drive |
WO2005038297A1 (en) * | 2003-10-17 | 2005-04-28 | Dayco Europe S.R.L. | A two-armed tensioner for the drive belt of a motor vehicle |
US8353795B2 (en) | 2003-10-17 | 2013-01-15 | Dayco Europe S.R.L. | Two-armed tensioner for the drive belt of a motor vehicle |
DE102004018776A1 (en) * | 2004-04-19 | 2005-11-03 | Ina-Schaeffler Kg | Traction drive, in particular belt drive |
US9341243B2 (en) | 2012-03-29 | 2016-05-17 | Litens Automotive Partnership | Tensioner and endless drive arrangement |
US11174921B2 (en) | 2016-09-13 | 2021-11-16 | Litens Automotive Partnership | V tensioner and endless drive arrangement |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: INA-SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8141 | Disposal/no request for examination |