• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    EXCENTRIC TENSION PULLEY The present invention relates to a tensioning pulley (1) of a traction mechanism, in which a means of transmitting force, such as a belt or chain, is inserted and which can be adjusted by an adjustment cam (5 ) and which can be fixed, together with a fixing element (8), on a machine component (2). The adjusting cam (5) and the fixing element (8) together form a fixing device (17), with which at least one end position of the adjusting cam (5) can be defined and, consequently, the tensioner pulley (1). For this purpose, the fixing device (17) comprises at least one projection (15) projected radially or axially, which acts with at least one end stop (16) of the other corresponding component.
    公开号:BR112013003352B1
    申请号:R112013003352-5
    申请日:2011-06-30
    公开日:2020-10-13
    发明作者:Thomas Mennerat；Susanne Spörl
    申请人:Schaeffler Technologies Ag & Co. Kg.；
    IPC主号:
    专利说明:

    DESCRIPTION OF THE INVENTION SCOPE OF THE INVENTION
    The present invention relates to a tensioning pulley of a traction mechanism, in which a means for transmitting force, such as a belt or chain, is inserted. To adjust or adjust the tensioner pulley, an adjustment cam is provided, by means of which, in connection with a fixed fixing element, the tensioner pulley can be fixed in different positions on a machine component.
    Tensioning pulleys or deflection pulleys of traction mechanisms are designed to provide a determined tension of the force transmission medium as well as a belt tension, preferably free from slipping. Tension or deflection pulleys of this type are therefore also called deflection units.
    In combustion engines, the traction mechanisms are known as a toothed belt drive system for driving meat trees or as a V-belt drive system for driving auxiliary units. Tension or deflection pulleys and deflection units form important elements of this traction mechanism. One of these components' tasks is to provide a minimum winding of the force transmission means on the belt pulley in order to promote a drive that is as slip-free as possible. In addition, deflection elements are used in order to form a defined layout of the force transmission medium, whereby the force transmission medium can be conducted according to a pre-defined contour through the construction of the combustion machine.
    From DE 100 43 840 Al a deflection pulley or tensioner pulley is known, composed of a bearing, in which an internal screw is attached for fixing, which is also introduced through a spacer sleeve, which determines a distance axial deflection pulley to the combustion machine frame. The bearing is surrounded on the outside by a disc washer made of plastic, which can also be designated as the drum liner. The washer disc is positively attached to an outer bearing ring. In the assembled state of the tensioning or deflection pulley, the force transmission means of the traction mechanism is introduced in the disc washer.
    In addition, tensioning pulleys for traction mechanisms are known, in which the adjustment is carried out by means of a rotational displacement of the rotation axis of the tensioning pulleys around a rotating axis inserted within the outside diameter of the tensioning pulleys.
    It is a task of the invention to fix an adjustable tensioner pulley by means of a cam in defined positions.
    To solve this problem, according to the invention according to claim 1, a fixing device is provided, with which at least one final position of the tensioner pulley can be defined. The fastening device, formed together by the adjustment cam and the fastening element, comprises at least one projection projected in the radial or axial, which acts with at least one end stop of the other corresponding component. The concept according to the invention makes it possible to fix the tensioner pulley in different positions, for example, to simplify the assembly of the force transmission medium or to perform, in a nominal operating position, a fault-free end stop between the cam adjustment and the force transmission medium. The clamping device according to the invention, which includes high functionality, can be economically manufactured and installed easily, thus offering, in general, a low cost solution.
    According to an advantageous construction of the invention, a fixing element is assigned to the fixing element, a radial projection that acts with two stops of the adjustment cam, angled angled in relation to each other, in order to establish a defined final position the tensioner pulley. Preferably, two stops are assigned to the radial protrusion of the force transmission means, positioned on the adjustment cam offset at an angle to each other, whose position simultaneously defines the tensioning pulley adjustment range. Another influence on the adjustment range of the tensioner pulley and its final position can occur through the shape, the angular measurement of the radial projection of the fastening element.
    An alternatively constructed clamping device comprises a clamping element with an axially projected protrusion that engages positively in an annular groove in the adjustment cam. On that occasion it is proposed that the end area of the annular groove be formed simultaneously as a stop. The annular groove, which forms a circular segment, extends along an angular measure that defines the maximum adjustment range of the adjustment cam and thus the tensioner pulley.
    As a preferred fixing element, a screw is provided, which is inserted, together with a guide bushing, in a longitudinal perforation introduced decentrally into the adjustment cam, with a flange of the guide bushing having a radial protrusion that acts with the stop of the cam. adjustment.
    As an alternative to a guide sleeve, for example, the clamping device according to the invention can be proposed directly between the tightening and the adjusting cam. According to a preferred embodiment, the screwing includes, in particular, the screw head, a radial protrusion that engages positively in a recess of the adjustment cam which forms at least one end stop.
    In order to establish a final position corresponding to the nominal operational position of the tensioner pulley, the fixing device allows an adjustment, in which an effective lifting arm S> 0 is established between an axis that travels through the rotational axis of the tensioner pulley and the rotary axis of the adjustment cam and between a force of the FR belt resulting from the force transmission means, directed through the rotational axis of the tension pulley. Advantageously, the projection cam's protrusion is, at that time, positively and / or forcefully fixed on the stop of the fixing element, thereby resulting in an ideal adjustment of the tensioner pulley in the operational state.
    In a final position determined for the assembly of the power transmission means, the fixing device according to the invention offers the possibility that a lifting arm S> 0 is established between a first vertical axis A assigned to a rotary axis of the adjustment eccentric and a second vertical axis B assigned to the rotational axis of the tensioner pulley. With this, a stable end position of the tensioning pulley can be advantageously achieved during the assembly of the force transmission means.
    The construction according to the invention of the clamping device furthermore provides that, in a neutral position, a congruence of position between the rotating axis of the adjustment cam, the rotational axis of the tension pulley and the direction of the force is results in a force of the force transmission medium. Consequently, no effective lifting arm is established in this position between the rotating axis of the adjustment cam or between the rotational axis of the tension pulley and the direction of the force resulting from the belt. To establish a final position corresponding to the nominal operating position of the tensioner pulley, ideal for operation, an angle β 20 ° is provided between the neutral position and a position, in which the projection of the fastening element is fixed on the cam stop. adjustment.
    To solve the task, it is provided, according to the invention according to claim 9, that the tensioning pulley adjustment cam acts in a final position directly or indirectly by means of a radial protrusion with a stop of the fixed component of the machine. For this purpose, the machine component is preferably provided, to which the tensioner pulley is fixed by means of the fixing element.
    The tensioning pulley according to the invention can be used, as an alternative to a deflection unit, as a tensioning or deflection pulley and also as a tensioning pulley of a tensioning system, with which the means of transmitting force from a traction can be pre-ionized automatically.
    For the adjustment eccentric, a preferred adjustment area ot 150 ° is provided between the mounting position and the nominal operating position.
    The construction of the tensioning pulley according to the invention comprises a washer disc arranged in the adjustment cam, in order to be able to rotate by means of a bearing, the adjustment cam being fixed by means of a fastening element in the machine component. . In order to simplify the assembly of the tensioner pulleys, a fixing element is provided which, in the assembled state, is fixed against rotations in the machine component. For this, it is proposed, p. eg, a projection, which protrudes locally outwardly, displaced radially in relation to the screw fastening, by means of which the fastening element engages positively in the corresponding recess of the machine component. BRIEF DESCRIPTION OF THE DRAWINGS
    Further measures of the invention are explained below in connection with the description of a preferred embodiment. Show:
    Fig. Shows a sectional representation, a tensioning pulley with a fixing device, according to the invention;
    Fig. 2 a tensioning pulley, in front view, with the adjustment cam and the corresponding fixing device in an assembly position;
    Fig. 3a tensioner pulley according to figure 2 with a fixing device in a neutral position;
    Fig. 4 adjustment cam according to figure 2 with a fixing device in one position in an operational position;
    Fig. 5 is a tensioning pulley, in which the fixing device is arranged between the adjustment cam and the machine component. DETAILED DESCRIPTION OF THE DRAWINGS
    Figure 1 shows a tensioner pulley 1, deflection pulley or deflection unit in the assembled state, which is in an operational connection with the force transmission means 24, which is assigned to a traction mechanism, not shown in figure 1 The tensioner pulley 1 comprises a disc washer 3 involved, at least partially, by the force transmission means, which is arranged in the adjustment cam, in order to be able to rotate, by means of a bearing 4. Radially displaced in relation to the axis rotational pulley 6 of the tensioner pulley 1, a fastening element 8 is inserted in a longitudinal perforation 7 of the adjustment cam, consisting of a guide bushing 9 fixed to a machine component 2 and a screwdriver fixed to a machine component 2. In a tightening 10 loose, setting cam 5 is, e.g. eg in connection with an adjustment tool, which can be inserted into a tool holder 11, adjusted around a rotary axis 12 of the fastening element 8. To adjust an axial distance from the tensioner pulley 1 to the machine component 2 a spacer tube 13 is provided surrounded by a guide bushing 9. On the opposite side to that of the machine component 2, the guide bushing 9 forms a flange 14 surrounding it which has a local projection 15 pointing radially outwards. Together with a stop 16 of the adjusting cam 5, which protrudes axially outwardly, the projection 15 forms a fixing device 17, which limits the positioning and displacement of the adjusting cam. For rotation fastening, the guide bushing 9 includes a fixing pin 18, which engages positively in a corresponding recess 19 of the machine component 2.
    The fixing device according to the invention can also be made, alternatively to figure 1, directly between the screwing 10 and the adjusting cam 5 and, therefore, without the guide bushing 9. For this purpose, it is proposed, for For example, a screw head of the screw 10 positively engages with a radial protrusion, in a region between two projection cam 5 protrusions, which form two spaced end stops projected axially outwards.
    Figure 2 shows the tensioner pulley 1 which rotates about a rotating axis 12 of the adjusting cam 5 in an end position or mounting position, in which the force transmission means or the belt can be easily mounted. In that position, the projection 15 of the guide bushing 9 is fixed to the stop 16. In that position of the tensioning pulley, a lifting arm S> 0 is formed between a vertical axis A oriented by a rotary axis 12 and a vertical axis B of the rotational axis 6 , which triggers, due to the weight of the tensioner pulley 1, an angular moment, whereby the limit stop 16 is fixed to the projection 15 by force, to provide a stable position. After successful assembly of the belt, the adjusting cam 5 and, consequently, the tensioner pulley 1 can be rotated in the direction indicated by the arrow, clockwise, to adjust a desired pre-tensioning of the force transmission medium. The maximum displacement angle α 150 ° of the adjusting cam 5, reduced in proportion to the size of the projection width 5, is limited by another stop 20 of the adjusting cam.
    Figures 3 and 4 show alternative adjustments of the adjustment cam 5. Here the individual units and areas, which have functions equivalent to the individual units and areas described above, are provided with the same reference numbers and do not need to be clarified in detail again .
    Figure 3 shows a neutral position of the adjustment cam 5, which can be reached by turning the adjustment cam 5 clockwise, until a position convergence is established between the rotary axis 15, the rotational axis 6 and a sense of the forces resulting from the FR belt or the belt transmission means. In this position of the adjustment cam 5, an angle β> 20 ° results between the stop 20 of the adjustment cam 5 and the projection 15.
    In the nominal operating position of the tensioner pulley 1 as shown in figure 4, the end stop 20 of the adjusting cam 5 is fixed to the projection of the guide bushing 9. In this final position, a lifting arm S> 0 is proposed between the rotational axis 6 of the tensioner pulley 1, which travels in the direction of the force resulting from the FR belt in relation to a longitudinal axis, which travels the rotary axis 12 of the adjustment cam and the rotational axis 6 of the adjustment cam 5. Because of this geometric arrangement, in the nominal operating position, the limit stop 20 is fixed to the projection 15 by force, in order to provide a stable positioning.
    As an alternative to the execution example described above, figure 5 illustrates the tensioning pulley 1, the fixing device 21 of which covers the end stops 22, 23 assigned to the machine component 2, which act directly with the adjusting cam 5. The setting of the setting cam 5 on the stop 21 corresponds to the nominal operating position. In the other mounting position illustrated in broken lines, the adjustment cam 5 is attached to the stop 22.
    LIST OF REFERENCE NUMBERS tensioner pulley 2 machine component 3disco washer 4 bearing 5 eccentric adjustment 6 rotational axis 7 longitudinal drilling 8 fixing element 9 guide bushing 10 screwing tool holder 12 rotating axle 13 spacer 14 bit flange 15 tipping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stopping 16 stroke end stop 16 stroke 16 end stop 17 stroke 16 tipping end stop 17 stroke 16 tipping end stop 16 end stop 17 stroke 16 tipping bar 21 fixing device 22 limit switch 23 limit switch 24 force transmission medium
    权利要求:
    Claims (3)
    [0001]
    1. Belt drive, comprising a belt (24), a tensioner pulley (1) that guides the belt (24), an adjustment cam (5), through which the tensioner pulley (1) is adjustable, and a fastening element (8), with which the tensioner pulley (1) can be fixed to a machine component (2), the adjustment cam (5) and the fastening element (8) together forming a fastening device fixation (17), which defines a final position of the adjustment cam (5) and, consequently, of the tensioner pulley (1), and which has a projection (15), on which, in a final position, a stop is supported limit switch (16) of the adjustment cam (5), characterized in that the tensioner pulley (1), in a final position, is rotated to the position of the belt assembly, in whose mounting position the end stop (16) is supported on the projection (15) thanks to the weight of the tensioner pulley (1), and because the tensioner pulley (1), in another final position, is rotated to the nominal operating position that p re-tension the belt (24), in which another end stop (20) of the adjustment cam (5) is supported, in a stable position, on the projection (15).
    [0002]
    2. Belt drive according to claim 1, characterized in that, in a neutral position of the tensioner pulley (1), a position congruence is established between the rotating axis (12) of the adjustment cam (5), the rotational axis (6) of the tensioner pulley (1) and the direction of the force resulting from the force of the belt FR of the force transmission means (24), being that, in the neutral position, the limit stop (20) is spaced by an angle β> 20 ° in relation to the projection (15).
    [0003]
    3. Belt drive according to claim 1 or 2, characterized in that an adjustment range α> 150 ° is provided for the adjustment cam (5) between the mounting position and the nominal operating position.
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    法律状态:
    2019-12-17| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-31| B25A| Requested transfer of rights approved|Owner name: SCHAEFFLER TECHNOLOGIES GMBH AND CO. KG (DE) |
    2020-01-21| B25D| Requested change of name of applicant approved|Owner name: SCHAEFFLER TECHNOLOGIES AG AND CO. KG (DE) |
    2020-04-07| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-07-21| B09A| Decision: intention to grant|
    2020-10-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/06/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010036253.0|2010-09-03|
    DE102010036253A|DE102010036253A1|2010-09-03|2010-09-03|Eccentric tensioner|
    PCT/EP2011/061019|WO2012028354A1|2010-09-03|2011-06-30|Eccentric idler pulley|
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