ROLLENHEBEL-BETÄTIGUNGSEINRICHTUNG UND DAMIT AUSGESTATTETE ROLLENHEBEL-VENTILANORDNUNG

Roller lever actuation means

and thus equipped roller lever -Ventilanordnung

The invention relates to a roller lever actuating device for roller lever valves, having a serving for fixing to a valve unit of a roller lever valve bearing base and a relative to the bearing pedestal pivotable roller lever, wherein the roller lever has a drive roller-bearing swivel arm, which by specifying a working position of the roller lever by means of a

Pivot axis predetermining pivot bearing means is mounted pivotably on the bearing pedestal and having the at least one spaced from the pivot axis force output portion of the assigned for pressing cooperating with a an actuatable valve member arrangement of a roller lever valve actuating section is provided. The invention further relates to a roller lever -Ventilanordnung with at least one roller lever valve, which is equipped with such a roller lever actuator.

From DE 84 36 606 Ul is a roller lever -Ventilanordnung known, the multi-roller lever -

is equipped actuators of the aforementioned type. The known roller lever -Ventilanordnung contains several combined to form a unit roller lever valves, each equipped with its own roller lever actuator. Each roller lever actuator has a to the valve housing of a valve unit of the associated roller lever valve mounted bearing base and a pivotally fixed to the bearing socket swivel arm, which forms a pivotable roller lever together with it carries drive roller. In operation of the roller arm valve assembly may include a to the roller lever moving relative actuator which is for example a projection formed on a machine part operating cam acting on the drive roller, thereby causing pivotal movement of the roller lever relative to the bearing pedestal. During this pivoting movement of the roller lever is pivoted by an operation slew angles with its pivot arm acts with a pressing spaced from the pivot axis force output portion to an operatively connected with a valve member actuating portion. The pivot bearing means includes a bearing socket disposed on the first pivot-bearing unit in the form of two catch openings, and at the

Pivoting arm disposed second pivot-bearing unit in the form of two rotatably latched in the latching openings axle stubs. In all of the roller lever actuators of the pivoting path of the force delivery sections for the same operation slew angles of the swing arm is identical. This operation slew angles is matched to the stroke of the associated operating segment. To produce different strokes of the operating portion, corresponding differently designed roller lever controls shall be made available in the conventional case.

From DE 1721502 U a roller lever valve is known which has a valve unit, the valve housing has frontally projecting away wall portions between which a pivotable roller lever is arranged with the help of a joint pin.

The invention is based on the object to take measures that allow it to make a roller lever actuator for different applications available.

To achieve this object of the type mentioned at a roller lever actuating device is provided that a plurality of alternative, differing in the distance between the pivot axis and the force output portion of the swing arm working positions of the roller lever can be predetermined by the pivot bearing means.

The object is further achieved by a roller lever valve arrangement which has at least one roller lever valve, which is equipped with a groove formed in the aforementioned sense roller lever actuator.

In this way it is possible, during assembly of the roller lever actuator the roller lever with its swivel arm in a selected plurality of different working positions to attach the bearing pedestal. This will let the kinematic effects of the ongoing operational pivotal movement of the roller lever variably adapted to different circumstances. Thus, with one and the same type of roller lever actuator depending on which is in working position of the roller lever mounted on the associated the actuating portion of the valve member force output portion of different sizes

Swivel initiate or Schwenkhübe be tapped. This makes it possible, for example, created advertising the, piston valves and seat valves, which are usually about widely different Umschalthübe their valve - limbs have, with one and equip actuator the same type of roller lever, which differ from each other only in the differing working position of its roller lever , Compared to a provision of independent roller lever actuators for each different application, the manufacturing costs are thereby reduced as well as the cost of warehousing and logistics. Preferably, the pivoting means are designed such that after assembly of the roller lever-actuator it is possible to change the working position of the roller lever. This provides the user of the product, the advantageous possibility of being able to make a conversion with respect to different applications as needed themselves.

Advantageous developments of the invention will become apparent from the dependent claims.

The pivot bearing means of the roller lever-actuating means are expediently for pivotal mounting of the

Pivot arm formed on the bearing pedestal in at least two different working positions. As a rule, it will be sufficient to allow just two different working positions. In principle, however, any number of operating positions of the roller lever can be specified by a corresponding configuration of the pivoting means.

When the selectable by means of the pivot bearing means working positions there are preferably discrete positions, each predefined. Compared to an embodiment in which the continuously varying Ar- beitspositionen be realized, this has the advantage that the roller lever actuating device can be designed in the production factory optimal in terms of preferred different applications.

In a preferred embodiment, the roller lever actuating device has on the bearing base via at least one shelf base-side pivot-bearing unit and to the pivot arm via at least one schwenkarmseitige pivot-bearing unit. At least with the bearing pedestal or on the pivot arm, the associated pivot bearing unit is plural, said plurality of existing pivot bearing units are arranged relative to the longitudinal extent of the pivot axis with transverse spacing from one another. The pivoting means offer the possibility, each pivot-bearing unit of the pivot arm is selected with each pivot-bearing unit of the bearing pedestal pivotally coupling and thereby to specify different working positions of the roller lever, in which the distances between the pivot axis and the force output portion of the swivel arm are different.

It is advantageous possibility, both in the bearing socket and to the pivot arm in each case form a plurality of pivot bearing units which are selected while ensuring a degree of freedom pivot coupled to one another. Especially advantageous is, however, considered, if only the bearing pedestal or only the pivot arm has a multiple arrangement of the pivot bearing units and on the other component, only a single pivot-bearing unit is provided which can be coupled as needed with each of the plurality aforesaid pivot bearing units. Particularly expedient doing a design is considered, in which the multiple pivot bearing units are in stock base.

Preferably, the pivoting means comprise a pivot axis coaxial with the axle to couple the pivot arm pivotally connected to the bearing pedestal. When the axle is in particular a relation to the pivoting arm and the bearing base separate component which is combined during assembly of the roller lever actuator with the two associated pivot bearing units and which is fixed captive on the pivot arm and / or the bearing pedestal. The latter, for example by pressing in the bearing socket.

Preferably, each pivot bearing unit is provided with an opening formed for receiving an axle pin bearing recess. In the coupled state in a working position between

And pivot arm bearing socket The mutual Lageraus- recesses coaxially aligned with each other and penetrated by a common associated axle.

In the bearing pedestal and / or the pivoting arm, the bearing recess of the respective pivot-bearing unit composed of two mutually coaxial and axially spaced-apart recess portions may be made. If the said components for example formed as bent sheet-metal parts, they may each have two opposite leg portions themselves have respectively passed through by a bore formed in the manner of a recess.

The bearing socket is preferably formed so that it has a work area, in which it cooperates with the pivot axis a beabs- tandeter force output portion of the swing arm with an associated one operable valve member assembly operation portion. Preferably, the pivoting arm, either directly or with a certain space is provided with a plurality of power output sections which are arranged transversely to the pivot axis side by side next to each other. In the predeterminable by the pivot bearing means different working positions of the roller lever are different power output sections in the work area, that is, the effective function of the operating position the power output portions are at different distances from the pivot axis. With the same operating pivot angle of the pivot arm arising in this way different pivot paths of the respectively effective power output sections.

In a particularly simple embodiment, the drive roller is mounted directly to the swing arm. An alternative embodiment provides that the drive roller is arranged on a tilting arm, which in turn at the

Swivel arm is pivotably mounted about an axis parallel to the pivot axis of the tilt axis. An additionally equipped with a rocker arm roller lever can be described as Kipprollenhebel.

The roller lever valve assembly according to the invention may comprise only one roller lever valve or a plurality of roller lever valves. At a plurality of roller lever valves of each roller lever valve is equipped with the same type of roller lever actuating device according to the invention. There is here, however, the advantageous possibility in several of the roller lever valves, the roller lever actuator assemble so that they differ from each other in the working positions of their roller lever. In other words, more Rollenhebelventi- can le the roller lever -Ventilanordnung so with differently configured roller lever actuators equipped be that adapt differently sized swivel ways of cooperating with the actuation sections power output sections in the operation of the roller lever valve for the same operation slew angles of the swing arm. Here, the pivoting path of the force output portions is adapted to the working stroke of the operating portion of the respective associated roller lever valve. There is thus operate the advantageous possibility inherently different sized strokes of various types of valve units of roller lever valves with one and the same type of roller lever actuator according to the invention.

The above applies in particular with respect as piston valves trained roller lever valves and as seat valves trained roller lever valves. In these types of valves, the valve members and consequently the operating portions have very often a different stroke, so it is advantageous if both types of roller lever valves with the same kind of roller lever actuators according to the invention can be equipped in which only the roller lever positioned at different working positions must become.

For the user of roller lever valves provides with the inventive design of the advantage that it can be easily replaced with different valve units basic type equipped roller lever valves, without having to make measures that the operation of the slew angles

affect the pivot arm of the roller lever actuator. The only adjustment that is required is to use a roller lever actuator with comparable änderter working position of the roller lever. This is done either by the fact that a second, correspondingly shaped roller lever actuator is used instead of a previously used first roller lever actuator, wherein the roller lever is mounted in a different working position. Or, with appropriate design of the roller lever actuation means, by conversion of the roller lever actuator itself, by the pivot lever is offset relative to the bearing socket so that the desired different working position of the roller lever is present.

The roller lever actuator is expediently respectively arranged at an axial end of the valve housing of the associated roller lever valve. There is also the work area described above in which the pivoting arm cooperates with its power output section to the operating section of the valve unit. The operating portion of the valve unit stands out depending on operating status expediently more or less frontally from the valve body of the valve unit.

The invention will be explained in more detail with reference to the accompanying drawings. In which:

1 shows a roller lever valve of a preferred embodiment of a roller lever according to the invention - the valve arrangement provided with a likewise preferred design of a roller lever according to the invention - is equipped actuator, the whole in a perspective representation and in the unactuated starting position of the roller lever,

2 shows a longitudinal section through the valve of the roller lever

Figure 1 according to section line II-II of Figure 1, wherein in addition schematically a suitable actuator is illustrated for the actuation of the roller lever, the roller lever valve of Figure 1 in the actuated position of the roller lever, the roller lever valve of Figure 3 in longitudinal section according to section line IV-IV, wherein a the roller lever-held in the actuated position actuator is indicated in addition, in a way comparable to Figure 1 illustration of a further roller lever valve according to the invention type, which is equipped with the same roller lever actuator as the roller lever valve of figures 1 to 4 but in which the roller lever in is mounted a different working position in the bearing socket, the arrangement of Figure 5 in a longitudinal section according to section line VI-VI of Figure 5, again with a serving for actuation of the roller lever actuating member is indicated schematically, the roller lever valve of Figure 5 in the betätig th position of the associated roller lever, and a longitudinal section of the roller lever valve of Figure 7 in longitudinal section according to section line VIII-VIII of Figure 7, wherein additionally a roller lever the retaining in the actuated position actuator is illustrated. In the drawing in Figures 1 to 4 show a first design of an inventive roller lever valve la is illustrated, while the figures illustrate 5 to 8, a second design of the roller lever valve of the invention lb, the two roller lever valves la, lb with the same type of an inventive roller lever actuator are equipped. 2

Each roller lever valve la, lb has a valve unit 3, which is equipped with the roller lever actuator. 2 The two roller lever valves la, lb differ in the structure of its valve unit 3, wherein the depicted in Figures 1 to 4 first roller lever valve la has a first valve unit 3, while the illustrated in the figures 5 to 8 second roller lever valve lb to a first of the valve unit 3a structurally different second valve unit is equipped 3b.

Each valve unit 3 has a longitudinal axis 4 and includes a valve housing 5, on one of its two axial end faces of the roller lever actuator 2 is arranged on the.

Essential components of the roller lever actuator 2, a serving for fixing to the valve unit 3 and a bearing base 6 on the bearing base 6 about a pivot shaft 7 pivotably mounted roller lever. 8

The bearing base 6 is preferably frontally fixed to the valve housing. 5 Exemplary is this, a releasable attachment which is particularly realized by means of fastening screws 12th Conveniently, the bearing base 6 has a base plate 13 which is attached to a front end surface 14 of the valve casing 5 and screwed by means of fastening screws 12 to the valve body. 5

In an embodiment not shown, the bearing base 6 is an integral part of the valve housing. 5

In the interior of the valve housing 5 there is a valve member assembly 15 is switched by executing an oriented in the axial direction of the longitudinal axis 4, illustrated by a double arrow 16 switching movement between different switching positions. The valve member assembly 15 in dependence on their respective switching position, the fluid communication between a plurality of valve passages 17, which pass through the wall of the valve housing 5 and which are open on the one hand to the outer surface of the valve housing 5 and on the other hand open out into a recess formed in the interior of the valve housing 5 valve chamber 18, in which extends the valve member assembly 15 °.

The valve member assembly 15 can have but according to Figures 1 to 4 with only a single valve member or also according to figures 5 to 8 over a plurality of mutually coaxial valve members.

The valve member assembly 15 is biased by spring means 21 of the valve unit 3 into a basic position. In this basic position by at least one valve member, the valve member assembly 15 drivingly cooperating actuating portion 19 projects out of a basic position in the region of the front end face 14 of the valve body 5 while taking. The operation portion 19 may, as is 5 to 8 of the case in the embodiment of the figures, be an integral part of a valve member of the valve member assembly 15 °. Alternatively, it may be portion in the actuation 19 and a with respect to the valve member assembly act 15 separate component which is drivably coupled to a valve member, the valve member assembly 15, in particular such that it is able to exert a pushing force on the valve member assembly 15 °.

Due to the realized by means of the spring means 21 spring bias of the valve member assembly 15 and the actuating portion 19 is biased in a prominent on the front end surface 14 from the valve housing 5 normal position.

The operation portion 19 is moved by executing a direction indicated by a double arrow, preferably linear actuation motion 22 between the position shown in Figures 2 and 6 unactuated initial position and an apparent from Figures 4 and 8 working position. In the operating position of the operating section 19 or not less jutting out from the valve housing 5 out than in the non-actuated basic position. In the non-actuated basic position of the operating section 19, the valve member assembly 15 assumes a first switching position a, in the actuated operating position of the operating section 19, a second switching position. The two switch positions differ in the connection pattern of the valve ducts 17th

Exemplary is the first roller lever valve la of the embodiment of Figures 1 to 4, a piston valve. The valve member assembly 15 here consists of a piston valve designed as a valve member 15a that cooperates to perform its control function with respect to the valve housing 5 fixed radial sealing surfaces. In contrast, it is in the second roller lever valve lb of the embodiment of Figures 5 to 8 to a seat valve, wherein the valve member assembly 15 has one or more valve members which cooperate with at least one axial, that is to say in the axial direction of the switching movement 16 oriented valve seat ,

The first and second roller lever valves la, lb differ inter alia in the length of the working stroke "A" of the operating portion 19. The working stroke "A" is the path length traveled by the operating portion 19 between the unactuated starting position and the operated operating position. In the first roller lever valve la of Figures 1 to 4 of the working stroke "A" is greater than that of the second roller lever valve lb of Figures 5 to eighth

The first and second roller lever valves la, lb form a roller lever valve assembly 10 in each case alone or together as a group.

The bearing base 6 has a work area 23 and is arranged on the valve unit 3 that the valve unit 3 is in this work area 23 of the operation portion 19th

The roller lever 8 results in the pivoting about the pivot axis 7 relative to the bearing base 6 from a direction indicated by a double arrow roller lever swivel motion 24th The pivoting plane of said roller lever swivel motion 24 runs perpendicular to the pivot axis 7 and extends in the figures 2, 4, 6 and 8 parallel to the drawing plane. The pivoting axis 7 extends expediently in a right-angled to the longitudinal axis 4 of the valve unit 3 pivot axis plane.

The pivot axis 7 is defined by pivot bearing means 25 of the roller lever actuator. 2 Due to the swing support means 25, a swing arm 26 is coupled to the roller lever 8 about the pivot axis 7 pivotally connected to the bearing pedestal. 6 The pivot arm 26 extends away from the pivot axis 7 and bears at a location spaced from the pivot axis 7 position a rotatable drive roller 27th

Over the drive roller 27, the roller lever swivel motion 24 be brought about. The drive roller 27 is adapted to cooperate with an external, movable actuator 28th In operation, the roller lever valve la, lb is installed so that the drive roller 27 non-pivoted in the

Basic position of the roller lever 8 projects into the illustrated by an arrow traverse 32 of the actuator 28th By the moving actuator 28 an actuating force is exerted on the drive roller 27 through which the roller lever 8 by executing the roller lever swivel motion 24 from a non-pivoted normal position according to FIGS 1, 2, 5, and 6 in one of Figures 3, 4, 7, and 8 apparent pivoted working position is pivotable. When the actuator 28 is preferably a part of a movable machine part, which is in particular formed no- ckenförmig.

In the aforementioned roller lever 24 swivel motion of the roller lever 8 presses with a spaced from the pivot axis 7 of the power output portion 33a, 33b of the swing arm 26 to the operation portion 19 and displaces the latter operated from the unactuated basic position into the working position.

The swing arm 26 extends axially forwardly of the actuator 28 via the actuator 28 across and lies with its power output portion 33a, 33b preferably only loosely end face of the actuating member 28, whose end surface is expediently rounded.

When the actuator 28 has removed from the sphere of influence of the drive roller 27, it is that it has the drive roller 27 completely over or has moved back to its original position is, the roller lever 8 by the directly or indirectly acted upon by the spring means 21 operating portion 19 pivoted back into the unskewed basic position.

In the embodiment of roller lever 8 is designed with two arms and comprises, in addition to the swing arm 26 also in turn a pivotably mounted on the pivot arm 26 the rocker arm 34, the drive roller 27 is rotatably disposed on the rocker arm 34th In a not shown embodiment, no further rocker arm 34 is present and the drive roller 27 is mounted directly on the swivel arm 26 to rotate. In any case, the drive roller is arranged at a distance from the pivot axis 7 of the pivoting arm 26 in all embodiments of the roller lever 8 27th

When the roller lever 24 between the swivel motion unver- pivoted starting position and the pivoted operating position of the pivot arm 26 is pivoted relative to the bearing base 6 about a pivot angle which is designated as the operation slew angles.

The rocker arm 34 is supported in a bearing region 35 in such a manner pivotally movable on the pivot arm 26 that is a parallel to the pivot axis 7 tilt axis 39 it is in this regard pivotable. 26 effective spring means 36 are preferably provided between the rocker arm 34 and the pivot arm, the spring 34 resiliently biasing the rocker arm in a pivot arm 26 with respect to the occupied basic position in which it bears against a stop portion 37 of the pivot arm 26th

The respect to the bearing base 6 serving for the pivotal mounting of the swing arm 26 swing support means 25 are designed such that the roller lever 8 in each of several possible working positions can be coupled alternatively pivotally connected to the bearing pedestal. 6 By the pivot bearing means 25. Thus, several alternative operating positions of the roller lever with respect to the bearing base 6 can be predetermined, with these plural working positions characterized by a different distance between the pivot axis 7 and the cooperating with the operating portion 19 the power output portion 33a, 33b.

The pivot bearing means 25 are so constructed that they permit a pivotable mounting of the swivel arm 26 on the bearing base 6 in at least two different working positions. Exemplary allow pivoting means 25, the alternative mounting of the swing arm 26 in exactly two working positions. The first working position is shown in Figures 1 to 4, wherein a distance between the pivot axis 7 and the force output portion 33a "AK1" is indicated. In the embodiment of Figures 5 to 8 of the roller lever is mounted in the second possible working position 8, wherein a is indicated here between the pivot axis 7 and the force output portion 33b existing distance with "AK2". In the embodiment of existing in the second operating position distance "AK2" is smaller than the existing one in the first operating position distance "AK1".

In order to enable the variable mounting of the pivot arm 26 on the bearing pedestal 6, the embodiment of the bearing base 6 has a number of possible working positions corresponding number of storage-base-side swivel bearing units 38 available, so an exemplary two piece, which in the following for better differentiation as well as the first lagerso - ckelseitige pivot-bearing unit 38a and are referred to as second lagerso- ckelseitige pivot-bearing unit 38b. The swing arm 26, however, is only equipped with a single swing arm side pivot bearing unit 42nd Both bearing base-side swivel bearing units 38, 38a, 38b are perpendicular to the longitudinal axis 4 at a distance from the work area 23 and formed the actuating portion therein 19 to the bearing base 6, said second lagerso- ckelseitige pivot-bearing unit 38b in the embodiment closer to the work area 23 or the operation portion 19 is 38a as the first storage-base-side pivot-bearing unit.

In the first operating position according to figures 1 to 4, the swing arm is pivotally coupled at its swivel-arm 26 pivot-bearing unit 42 with the first bearing base-side pivot-bearing unit 38, 38a. In the second working position shown in Figures 5 to 8, the swing arm is pivotally coupled at its swivel-arm pivot-bearing unit 42 with the second bearing base-side swivel bearing unit 38, 38b 26th As the power output portion 33a, 33b respectively functioning one length section of the pivot arm 26, which is located in the work area 23, where it is upstream of the operating portion 19th Consequently, the

Pivot arm 26 two different distances from the pivot axis 7 of first and second force output portions 33a, 33b, of which the first power output portion 33a cooperates in the first operating position and the second force output portion 33b in the second work position with the operating portion 19th The two force output portions 33a, 33b include transversely to the pivot axis 7 either directly adjacent to or spaced from each other.

Seen this constellation leads to that the effective in the first working position of the first force output portion 33a travels on the roller lever 24 swivel motion a larger pivoting path than the second force output portion 33b in the second working position of the roller lever. 8

The two distances "AK1" and "AK 2" are matched to the different sizes of power strokes "A" of the operating portion 19 of the different types of valve units 3, that in the first working position from the first power output portion 33a executable pivoting at least substantially to the stroke " A "of the operating section 19 of the first valve unit 3a corresponds to and that in the roller lever pivoting movement 24 travelable pivoting at least substantially from the second force output portion 33b of the working stroke" corresponding to A "of the operating section 19 of the second valve unit 3b.

Consequently, can be one and the same type of roller lever operating devices 2 solely by the selective pivotal mounting of the roller lever 8 lager base-side at the first or second pivot bearing unit 38, 38a, 38b operate different types of valve units 3, which is in the working "A" of its operating portion 19 different from each other.

In a non-illustrated embodiment, the bearing base 6 is equipped with a single bearing base-side pivot-bearing unit 38 while sev- eral spaced schwenkarmseitige pivot bearing units are provided on the pivot arm 26 42, which are selectively coupled for providing different working positions of the roller lever 8 with the single bearing base-side swivel bearing unit 38 ,

In another, also not shown embodiment, both of the bearing base 6 and the feature

Pivot arm 26 through a plurality transversely to the pivot axis spaced apart bearing base-side swivel bearing units 38 and schwenkarmseitige pivot bearing units 42, which are combined with each other to specify more than two working positions for the roller lever. 8 It is advantageous here if the base-side bearing between the

Pivot bearing units 38 deviates from the known distance existing between the swivel-arm pivot bearing units 42 spacing.

In the embodiments, the pivot bearing units 38, 42 and intended for their coupling measures are particularly easily realized. Each pivot-bearing unit 38, 42 consists of a bearing recess 43, wherein a bearing recess 43 of the bearing base 6 aligned in every working position of the roller lever 8 with a bearing recess 43 of the pivot arm 26 coaxially and a pivot pin 44 gerausnehmungen in the aligned laser is inserted 43rd When the axle 44 is preferably a cylindrical pin.

Exemplary of the axle 44 is fixed with its outer end portions of the bearing base 6 while such interspersed that Selbiger the bearing recess 43 of the pivot arm 26 on the pivot pin 44 to engage in the roller lever - is rotatable pivoting movement 24th Conveniently, the pivot pin 44 is riveted at least one side in the bearing recess 43 of the bearing pedestal. 6 The longitudinal axis of the axle 44 coincides with the pivot axis. 7

In the embodiment of the bearing base 6 has two projecting away from the base plate 13 in perpendicular to the pivot axis 7 planes base leg 45. The two base legs 45 are arranged in the axial direction of the pivot axis 7 at a distance from each other. They are preferably formed integrally with the base plate 13 and define, together with the base plate 13 is a U-shaped structure, which U-opening of the front end face 14 of the valve unit 3 facing away.

Each of the bearing base 6 formed bearing recess 43 is composed of two mutually coaxial Ausnehmungsabschnit- th 46 together that are formed in one of the two base legs 45 as the respective base legs 45 passing through holes.

The swing arm 26 preferably has a U-shaped cross-sectional profile with two 47 in the axial direction of the pivot axis 7 at a distance opposite Schwenkarmschenkeln each functioning as schwenkarmseitige pivot-bearing unit 42 bearing recess 43 consists here of two coaxially aligned recess portions 48 together, each in one of the two Schwenkarmschenkel 47 are formed as the respective Schwenkarmschenkel 47 by releasing hole. The diameter of the recess portions 48 formed on the pivot arm 26 is slightly greater than the diameter of the axle pin 44, so that the pivoting movement is ensured.

The swing arm 26 extends advantageously between the two base legs 45. If he has a U-shaped cross-sectional profile, the U-opening expediently from the front end surface 14 away and the two Schwenkarmschenkel 47 connecting connecting web 52 defines each of the existing power output portions 33a, 33b.

The pivot bearing means 25 are preferably designed to be detachable, so that any time the possibility exists to change the working position of the roller lever. 8 On the other hand, a detachable design of the swing support means 25 is not mandatory, since the benefits for setting different working positions also allow for the production of the roller lever actuator 2 use the effect from the factory already that using the same components simply by selecting to be coupled storage base-side pivot bearing unit 38 and swivel-arm pivot-bearing unit 42 can specify the desired working position.